+++ /dev/null
-# Copyright 2015 Jason Woofenden
-# This file implements an WYSIWYG editor in the browser (no contenteditable)
-#
-# This program is free software: you can redistribute it and/or modify it under
-# the terms of the GNU Affero General Public License as published by the Free
-# Software Foundation, either version 3 of the License, or (at your option) any
-# later version.
-#
-# This program is distributed in the hope that it will be useful, but WITHOUT
-# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
-# FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
-# details.
-#
-# You should have received a copy of the GNU Affero General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-
-# SETTINGS
-overlay_padding = 10
-breathing_room = 30 # minimum pixels above/below cursor (scrolling)
-
-timeout = (ms, cb) -> return setTimeout cb, ms
-next_frame = (cb) ->
- if (window.requestAnimationFrame?)
- window.requestAnimationFrame cb
- else
- timeout 16, cb
-
-this_url_sans_path = ->
- ret = "#{window.location.href}"
- clip = ret.lastIndexOf '#'
- if clip > -1
- ret = ret.substr 0, clip
- clip = ret.lastIndexOf '?'
- if clip > -1
- ret = ret.substr 0, clip
- clip = ret.lastIndexOf '/'
- if clip > -1
- ret = ret.substr 0, clip + 1
- return ret
-
-# table too look up the properties of various values for css's white-space
-ws_props =
- normal:
- space: false # spaces are not preserved/rendered
- newline: false # newlines are not preserved/rendered
- wrap: true # text is word-wrapped
- to_preserve: 'pre-wrap' # to preservespaces, change white-space to this
- nowrap:
- space: false
- newline: false
- wrap: false
- to_preserve: 'pre'
- 'pre-line':
- space: false
- newline: true
- wrap: true
- to_preserve: 'pre-wrap'
- pre:
- space: true
- newline: true
- wrap: false
- to_collapse: 'nowrap'
- 'pre-wrap':
- space: true
- newline: true
- wrap: true
- to_collapse: 'normal'
-
-# xml 1.0 spec, chromium and firefox accept these, plus lots of unicode chars
-valid_attr_regex = new RegExp '^[a-zA-Z_:][-a-zA-Z0-9_:.]*$'
-# html5 spec is much more lax, but chromium won't let me make at attribute with the name "4"
-js_attr_regex = new RegExp '^[oO][nN].'
-# html5 spec says that only these characters are collapsable
-multi_sp_regex = new RegExp '[\u0020\u0009\u000a\u000c\u000d][\u0020\u0009\u000a\u000c\u000d]'
-
-str_has_ws_run = (str) ->
- return multi_sp_regex.test str
-
-# text nodes don't have getBoundingClientRect(), so use selection api to find
-# it.
-get_el_bounds = window.bounds = (el) ->
- if el.getBoundingClientRect?
- rect = el.getBoundingClientRect()
- else
- # text nodes don't have getBoundingClientRect(), so use range api
- range = el.ownerDocument.createRange()
- range.selectNodeContents el
- rect = range.getBoundingClientRect()
- doc = el.ownerDocument.documentElement
- win = el.ownerDocument.defaultView
- y_fix = win.pageYOffset - doc.clientTop
- x_fix = win.pageXOffset - doc.clientLeft
- return {
- x: rect.left + x_fix
- y: rect.top + y_fix
- w: rect.width ? (rect.right - rect.left)
- h: rect.height ? (rect.top - rect.bottom)
- }
-
-is_display_block = (el) ->
- if el.currentStyle?
- return el.currentStyle.display is 'block'
- else
- return window.getComputedStyle(el, null).getPropertyValue('display') is 'block'
-
-# Pass return value from dom event handlers to this.
-# If they return false, this will addinionally stop propagation and default.
-event_return = (e, bool) ->
- if bool is false
- if e.stopPropagation?
- e.stopPropagation()
- if e.preventDefault?
- e.preventDefault()
- return bool
-# Warning: currently assumes you're asking about a single character
-# Note: chromium returns multiple bounding rects for a space at a line-break
-# Note: chromium's getBoundingClientRect() is broken (when zero-area client rects)
-# Note: sometimes returns null (eg for whitespace that is not visible)
-text_range_bounds = (el, start, end) ->
- range = document.createRange()
- range.setStart el, start
- range.setEnd el, end
- rects = range.getClientRects()
- if rects.length > 0
- if rects.length > 1
- if rects[1].width > rects[0].width
- rect = rects[1]
- else
- rect = rects[0]
- else
- rect = rects[0]
- else
- return null
- doc = el.ownerDocument.documentElement
- win = el.ownerDocument.defaultView
- y_fix = win.pageYOffset - doc.clientTop
- x_fix = win.pageXOffset - doc.clientLeft
- return {
- x: rect.left + x_fix
- y: rect.top + y_fix
- w: rect.width ? (rect.right - rect.left)
- h: rect.height ? (rect.top - rect.bottom)
- rects: rects
- bounding: range.getBoundingClientRect()
- }
-
-class CursorPosition
- constructor: (args) ->
- @n = args.n ? null
- @i = args.i ? null
- if args.x?
- @x = args.x
- @y = args.y
- @h = args.h
- else
- @set_xyh()
- return
- set_xyh: ->
- range = document.createRange()
- if @n.text.length is 0
- ret = text_range_bounds @n.el, 0, 0
- else if @i is @n.text.length
- ret = text_range_bounds @n.el, @i - 1, @i
- if ret?
- ret.x += ret.w
- else
- ret = text_range_bounds @n.el, @i, @i + 1
- if ret?
- @x = ret.x
- @y = ret.y
- @h = ret.h
- else
- @x = null
- @y = null
- @h = null
- return ret
-
-new_cursor_position = (args) ->
- ret = new CursorPosition args
- if ret.x?
- return ret
- return null
-
-# encode text so it can be safely placed inside an html attribute
-enc_attr_regex = new RegExp '(&)|(")|(\u00A0)', 'g'
-enc_attr = (txt) ->
- return txt.replace enc_attr_regex, (match, amp, quote) ->
- return '&' if (amp)
- return '"' if (quote)
- return ' '
-enc_text_regex = new RegExp '(&)|(<)|(\u00A0)', 'g'
-enc_text = (txt) ->
- return txt.replace enc_text_regex, (match, amp, lt) ->
- return '&' if (amp)
- return '<' if (lt)
- return ' '
-
-void_elements = {
- area: true
- base: true
- br: true
- col: true
- embed: true
- hr: true
- img: true
- input: true
- keygen: true
- link: true
- meta: true
- param: true
- source: true
- track: true
- wbr: true
-}
-# TODO make these always pretty-print (on the inside) like blocks
-no_text_elements = { # these elements never contain text
- select: true
- table: true
- tr: true
- thead: true
- tbody: true
- ul: true
- ol: true
-}
-
-domify = (doc, hash) ->
- for tag, attrs of hash
- if tag is 'text'
- return document.createTextNode attrs
- el = document.createElement tag
- for k, v of attrs
- if k is 'children'
- for child in v
- el.appendChild child
- else
- el.setAttribute k, v
- return el
-
-
-
-ignore_key_codes =
- '18': true # alt
- '20': true # capslock
- '17': true # ctrl
- '144': true # numlock
- '16': true # shift
- '91': true # windows "start" key
-# key codes: (valid on keydown, not keypress)
-KEY_LEFT = 37
-KEY_UP = 38
-KEY_RIGHT = 39
-KEY_DOWN = 40
-KEY_BACKSPACE = 8 # <--
-KEY_DELETE = 46 # -->
-KEY_END = 35
-KEY_ENTER = 13
-KEY_ESCAPE = 27
-KEY_HOME = 36
-KEY_INSERT = 45
-KEY_PAGE_UP = 33
-KEY_PAGE_DOWN = 34
-KEY_TAB = 9
-control_key_codes = # we react to these, but they aren't typing
- '37': KEY_LEFT
- '38': KEY_UP
- '39': KEY_RIGHT
- '40': KEY_DOWN
- '35': KEY_END
- '8': KEY_BACKSPACE
- '46': KEY_DELETE
- '13': KEY_ENTER
- '27': KEY_ESCAPE
- '36': KEY_HOME
- '45': KEY_INSERT
- '33': KEY_PAGE_UP
- '34': KEY_PAGE_DOWN
- '9': KEY_TAB
-
-instantiate_tree = (tree, parent) ->
- remove = []
- for c, i in tree
- switch c.type
- when 'text'
- c.el = parent.ownerDocument.createTextNode c.text
- parent.appendChild c.el
- when 'tag'
- if c.name in ['script', 'object', 'iframe', 'link']
- # TODO put placeholders instead
- remove.unshift i
- continue
- # TODO create in correct namespace
- c.el = parent.ownerDocument.createElement c.name
- for k, v of c.attrs
- # FIXME if attr_whitelist[k]?
- if valid_attr_regex.test k
- unless js_attr_regex.test k
- c.el.setAttribute k, v
- parent.appendChild c.el
- if c.children.length
- instantiate_tree c.children, c.el
- for i in remove
- tree.splice i, 1
-
-traverse_tree = (tree, cb) ->
- done = false
- for c in tree
- done = cb c
- return done if done
- if c.children.length
- done = traverse_tree c.children, cb
- return done if done
- return done
-
-first_cursor_position = (tree) ->
- found = null
- traverse_tree tree, (node, state) ->
- if node.type is 'text'
- cursor = new_cursor_position n: node, i: 0
- if cursor?
- found = cursor
- return true # done traversing
- return false # not done traversing
- return found # maybe null
-
-# this will fail when text has non-locatable cursor positions
-find_next_cursor_position = (tree, cursor) ->
- if cursor.n.type is 'text' and cursor.n.text.length > cursor.i
- new_cursor = new_cursor_position n: cursor.n, i: cursor.i + 1
- if new_cursor?
- return new_cursor
- state_before = true
- found = null
- traverse_tree tree, (node, state) ->
- if node.type is 'text' and state_before is false
- new_cursor = new_cursor_position n: node, i: 0
- if new_cursor?
- found = new_cursor
- return true # done traversing
- if node is cursor.n
- state_before = false
- return false # not done traversing
- if found?
- return found
- return null
-
-last_cursor_position = (tree) ->
- found = null
- traverse_tree tree, (node) ->
- if node.type is 'text'
- cursor = new_cursor_position n: node, i: node.text.length
- if cursor?
- found = cursor
- return false # not done traversing
- return found # maybe null
-
-# this will fail when text has non-locatable cursor positions
-find_prev_cursor_position = (tree, cursor) ->
- if cursor.n.type is 'text' and cursor.i > 0
- new_cursor = new_cursor_position n: cursor.n, i: cursor.i - 1
- if new_cursor?
- return new_cursor
- found_prev = null
- found = null
- traverse_tree tree, (node) ->
- if node is cursor.n
- found = found_prev # maybe null
- return true # done traversing
- if node.type is 'text'
- new_cursor = new_cursor_position n: node, i: node.text.length
- if new_cursor?
- found_prev = new_cursor
- return false # not done traversing
- return found # maybe null
-
-find_up_cursor_position = (tree, cursor, ideal_x) ->
- new_cursor = cursor
- # go prev until we're higher on y axis
- while new_cursor.y >= cursor.y
- new_cursor = find_prev_cursor_position tree, new_cursor
- return null unless new_cursor?
- # done early if we're already left of old cursor position
- if new_cursor.x <= ideal_x
- return new_cursor
- target_y = new_cursor.y
- # search leftward, until we find the closest position
- # new_cursor is the prev-most position we've checked
- # prev_cursor is the older value, so it's not as prev as new_cursor
- while new_cursor.x > ideal_x and new_cursor.y is target_y
- prev_cursor = new_cursor
- new_cursor = find_prev_cursor_position tree, new_cursor
- break unless new_cursor?
- # move cursor to prev_cursor or new_cursor
- if new_cursor?
- if new_cursor.y is target_y
- # both valid, and on the same line, use closest
- if (ideal_x - new_cursor.x) < (prev_cursor.x - ideal_x)
- return new_cursor
- else
- return prev_cursor
- else
- # new_cursor on wrong line, use prev_cursor
- return prev_cursor
- else
- # can't go any further prev, use prev_cursor
- return prev_cursor
-
-find_down_cursor_position = (tree, cursor, ideal_x) ->
- new_cursor = cursor
- # go next until we move on the y axis
- while new_cursor.y <= cursor.y
- new_cursor = find_next_cursor_position tree, new_cursor
- return null unless new_cursor?
- # done early if we're already right of old cursor position
- if new_cursor.x >= ideal_x
- # this would be strange, but could happen due to runaround
- return new_cursor
- target_y = new_cursor.y
- # search rightward, until we find the closest position
- # new_cursor is the next-most position we've checked
- # prev_cursor is the older value, so it's not as next as new_cursor
- while new_cursor.x < ideal_x and new_cursor.y is target_y
- prev_cursor = new_cursor
- new_cursor = find_next_cursor_position tree, new_cursor
- break unless new_cursor?
- # move cursor to prev_cursor or new_cursor
- if new_cursor?
- if new_cursor.y is target_y
- # both valid, and on the same line, use closest
- if (new_cursor.x - ideal_x) < (ideal_x - prev_cursor.x)
- return new_cursor
- else
- return prev_cursor
- else
- # new_cursor on wrong line, use prev_cursor
- return prev_cursor
- else
- # can't go any further prev, use prev_cursor
- return prev_cursor
-
-xy_to_cursor = (tree, xy) ->
- for n in tree
- if n.type is 'tag' or n.type is 'text'
- bounds = get_el_bounds n.el
- continue if xy.x < bounds.x
- continue if xy.x > bounds.x + bounds.w
- continue if xy.y < bounds.y
- continue if xy.y > bounds.y + bounds.h
- if n.children.length
- ret = xy_to_cursor n.children, xy
- return ret if ret?
- if n.type is 'text'
- # click is within bounding box that contains all text.
- if n.text.length is 0
- ret = new_cursor_position n: n, i: 0
- return ret if ret?
- continue
- before = new_cursor_position n: n, i: 0
- continue unless before?
- after = new_cursor_position n: n, i: n.text.length
- continue unless after?
- if xy.y < before.y + before.h and xy.x < before.x
- # console.log 'before first char on first line'
- continue
- if xy.y > after.y and xy.x > after.x
- # console.log 'after last char on last line'
- continue
- if xy.y < before.y
- console.log "Warning: click in text bounding box but above first line"
- continue # above first line (runaround?)
- if xy.y > after.y + after.h
- console.log "Warning: click in text bounding box but below last line", xy.y, after.y, after.h
- continue # below last line (shouldn't happen?)
- while after.i - before.i > 1
- guess_i = Math.round((before.i + after.i) / 2)
- cur = new_cursor_position n: n, i: guess_i
- unless cur?
- console.log "error: failed to find cursor pixel location for", n, guess_i
- before = null
- break
- if xy.y < cur.y or (xy.y <= cur.y + cur.h and xy.x < cur.x)
- after = cur
- else
- before = cur
- continue unless before? # signals failure to find a cursor position
- # which one is closest?
- if Math.abs(before.x - xy.x) < Math.abs(after.x - xy.x)
- return before
- else
- return after
- return null
-
-# browsers collapse these (html5 spec calls these "space characters")
-is_space_code = (char_code) ->
- switch char_code
- when 9, 10, 12, 13, 32
- return true
- return false
-is_space = (chr) ->
- return is_space_code chr.charCodeAt 0
-
-tree_remove_empty_text_nodes = (tree) ->
- empties = []
- traverse_tree tree, (n) ->
- if n.type is 'text'
- if n.text.length is 0
- empties.unshift n
- return false # not done traversing
- for n in empties
- # don't completely empty the tree
- if tree.length is 1
- if tree[0].type is 'text'
- console.log "oop, leaving a blank node because it's the only thing"
- return
- n.el.parentNode.removeChild n.el
- for c, i in n.parent.children
- if c is n
- n.parent.children.splice i, 1
- break
-
-class PeachHTML5Editor
- # Options: (all optional)
- # editor_id: "id" attribute for outer-most element created by/for editor
- # css_file: filename of a css file to style editable content
- # on_init: callback for when the editable content is in place
- constructor: (in_el, options) ->
- @options = options ? {}
- @in_el = in_el
- @tree = null # array of Nodes, all editable content
- @tree_parent = null # @tree is this.children. .el might === @idoc.body
- @matting = []
- @init_1_called = false # when iframes have loaded
- @outer_iframe # iframe to hold editor
- @outer_idoc # "document" object for @outer_iframe
- @wrap2 = null # scrollbar is on this
- @wrap2_offset = null
- @wrap2_height = null # including padding
- @iframe = null # iframe to hold editable content
- @idoc = null # "document" object for @iframe
- @cursor = null
- @cursor_el = null
- @cursor_visible = false
- @cursor_ideal_x = null
- @poll_for_blur_timeout = null
- opt_fragment = @options.fragment ? true
- @parser_opts = {}
- if opt_fragment
- @parser_opts.fragment = 'body'
-
- @outer_iframe = domify document, iframe: {}
- outer_iframe_style = 'border: none !important; margin: 0 !important; padding: 0 !important; height: 100% !important; width: 100% !important;'
- if @options.editor_id?
- @outer_iframe.setAttribute 'id', @options.editor_id
- @outer_iframe.onload = =>
- @outer_idoc = @outer_iframe.contentDocument
- icss = domify @outer_idoc, style: children: [
- domify @outer_idoc, text: css
- ]
- @outer_idoc.head.appendChild icss
- @iframe = domify @outer_idoc, iframe: sandbox: 'allow-same-origin allow-scripts'
- @iframe.onload = =>
- @init_1()
- timeout 200, => # firefox never fires this onload
- @init_1() unless @init_1_called
- @outer_idoc.body.appendChild(
- domify @outer_idoc, div: id: 'wrap1', children: [
- domify @outer_idoc, div: style: "position: absolute; top: 0; left: 1px; font-size: 10px", children: [ domify @outer_idoc, text: "Peach HTML5 Editor" ]
- @wrap2 = domify @outer_idoc, div: id: 'wrap2', children: [
- domify @outer_idoc, div: id: 'wrap3', children: [
- @iframe
- @overlay = domify @outer_idoc, div: id: 'overlay'
- ]
- ]
- ]
- )
- outer_wrap = domify document, div: class: 'peach_html5_editor'
- @in_el.parentNode.appendChild outer_wrap
- outer_bounds = get_el_bounds outer_wrap
- if outer_bounds.w < 300
- outer_bounds.w = 300
- if outer_bounds.h < 300
- outer_bounds.h = 300
- outer_iframe_style += "width: #{outer_bounds.w}px; height: #{outer_bounds.h}px;"
- @outer_iframe.setAttribute 'style', outer_iframe_style
- css = @generate_outer_css w: outer_bounds.w, h: outer_bounds.h
- outer_wrap.appendChild @outer_iframe
- init_1: -> # @iframe has loaded (but not it's css)
- @idoc = @iframe.contentDocument
- @init_1_called = true
- # chromium doesn't resolve relative urls as though they were at the same domain
- # so add a <base> tag
- @idoc.head.appendChild domify @idoc, base: href: this_url_sans_path()
- # don't let @iframe have scrollbars
- @idoc.head.appendChild domify @idoc, style: children: [domify @idoc, text: "body { overflow: hidden; }"]
- # load css file
- if @options.css_file
- istyle = domify @idoc, link: rel: 'stylesheet', href: @options.css_file
- istyle.onload = =>
- @init_2()
- @idoc.head.appendChild istyle
- else
- @init_2()
- init_2: -> # @iframe and it's css file(s) are ready
- @overlay.onclick = (e) =>
- @have_focus()
- return event_return e, @onclick e
- @overlay.ondoubleclick = (e) =>
- @have_focus()
- return event_return e, @ondoubleclick e
- @outer_idoc.body.onkeyup = (e) =>
- @have_focus()
- return event_return e, @onkeyup e
- @outer_idoc.body.onkeydown = (e) =>
- @have_focus()
- return event_return e, @onkeydown e
- @outer_idoc.body.onkeypress = (e) =>
- @have_focus()
- return event_return e, @onkeypress e
- @load_html @in_el.value
- if @options.on_init?
- @options.on_init()
- generate_outer_css: (args) ->
- w = args.w ? 300
- h = args.h ? 300
- inner_padding = args.inner_padding ? overlay_padding
- frame_width = args.frame_width ? inner_padding
- occupy = (left, top = left, right = left, bottom = top) ->
- w -= left + right
- h -= top + bottom
- return Math.max(left, top, right, bottom)
- ret = ''
- ret += 'body {'
- ret += 'margin: 0;'
- ret += 'padding: 0;'
- ret += 'color: black;'
- ret += 'background: white;'
- ret += '}'
- ret += '#wrap1 {'
- ret += "border: #{occupy 1}px solid black;"
- ret += "padding: #{occupy frame_width}px;"
- ret += '}'
- ret += '#wrap2 {'
- ret += "border: #{occupy 1}px solid black;"
- @wrap2_height = h # including padding because padding scrolls
- ret += "padding: #{occupy inner_padding}px;"
- ret += "padding-right: #{inner_padding + occupy 0, 0, 15, 0}px;" # for scroll bar
- ret += "width: #{w}px;"
- ret += "height: #{h}px;"
- ret += 'overflow-x: hidden;'
- ret += 'overflow-y: scroll;'
- ret += '}'
- ret += '#wrap3 {'
- ret += 'position: relative;'
- ret += "width: #{w}px;"
- ret += "min-height: #{h}px;"
- ret += '}'
- ret += 'iframe {'
- ret += 'box-sizing: border-box;'
- ret += 'margin: 0;'
- ret += 'border: none;'
- ret += 'padding: 0;'
- ret += "width: #{w}px;"
- #ret += "height: #{h}px;" # height auto-set when content set/changed
- ret += '-ms-user-select: none;'
- ret += '-webkit-user-select: none;'
- ret += '-moz-user-select: none;'
- ret += 'user-select: none;'
- ret += '}'
- ret += '#overlay {'
- ret += 'position: absolute;'
- ret += "left: -#{inner_padding}px;"
- ret += "top: -#{inner_padding}px;"
- ret += "right: -#{inner_padding}px;"
- ret += "bottom: -#{inner_padding}px;"
- ret += 'overflow: hidden;'
- ret += '}'
- ret += '.lightbox {'
- ret += 'position: absolute;'
- ret += 'background: rgba(100,100,100,0.2);'
- ret += '}'
- ret += '#cursor {'
- ret += 'position: absolute;'
- ret += 'width: 2px;'
- ret += 'background: linear-gradient(0deg, rgba(0,0,0,1), rgba(255,255,255,1), rgba(0,0,0,1), rgba(255,255,255,1), rgba(0,0,0,1), rgba(255,255,255,1), rgba(0,0,0,1), rgba(255,255,255,1), rgba(0,0,0,1));'
- ret += 'background-size: 200% 200%;'
- ret += '-webkit-animation: blink 1s linear normal infinite;'
- ret += 'animation: blink 1s linear normal infinite;'
- ret += '}'
- ret += '@-webkit-keyframes blink {'
- ret += '0%{background-position:0% 0%}'
- ret += '100%{background-position:0% -100%}'
- ret += '}'
- ret += '@keyframes blink { '
- ret += '0%{background-position:0% 0%}'
- ret += '100%{background-position:0% -100%}'
- ret += '}'
- ret += '.ann_box {'
- ret += 'z-index: 5;'
- ret += 'position: absolute;'
- ret += 'border: 1px solid rgba(0,0,0,0.1);'
- ret += 'outline: 1px solid rgba(255,255,255,0.1);' # in case there's a black background
- ret += '}'
- ret += '.ann_tag {'
- ret += 'z-index: 10;'
- ret += 'position: absolute;'
- ret += 'font-size: 8px;'
- ret += 'white-space: pre;'
- ret += 'background: rgba(255,255,255,0.4);'
- ret += '-ms-user-select: none;'
- ret += '-webkit-user-select: none;'
- ret += '-moz-user-select: none;'
- ret += 'user-select: none;'
- ret += '}'
- return ret
- overlay_event_to_inner_xy: (e) ->
- unless @wrap2_offset?
- @wrap2_offset = get_el_bounds @wrap2
- x = e.pageX - overlay_padding
- y = e.pageY - overlay_padding + @wrap2.scrollTop
- return x: x - @wrap2_offset.x, y: y - @wrap2_offset.y
- onclick: (e) ->
- xy = @overlay_event_to_inner_xy e
- new_cursor = xy_to_cursor @tree, xy
- if new_cursor?
- @move_cursor new_cursor
- else
- @kill_cursor()
- return false
- ondoubleclick: (e) ->
- return false
- onkeyup: (e) ->
- return if e.ctrlKey
- return false if ignore_key_codes[e.keyCode]?
- #return false if control_key_codes[e.keyCode]?
- onkeydown: (e) ->
- return if e.ctrlKey
- return false if ignore_key_codes[e.keyCode]?
- #return false if control_key_codes[e.keyCode]?
- switch e.keyCode
- when KEY_LEFT
- if @cursor?
- new_cursor = find_prev_cursor_position @tree, @cursor
- else
- new_cursor = first_cursor_position @tree
- if new_cursor?
- @move_cursor new_cursor
- return false
- when KEY_RIGHT
- if @cursor?
- new_cursor = find_next_cursor_position @tree, @cursor
- else
- new_cursor = last_cursor_position @tree
- if new_cursor?
- @move_cursor new_cursor
- return false
- when KEY_UP
- if @cursor?
- new_cursor = find_up_cursor_position @tree, @cursor, @cursor_ideal_x
- if new_cursor?
- saved_ideal_x = @cursor_ideal_x
- @move_cursor new_cursor
- @cursor_ideal_x = saved_ideal_x
- else
- # move cursor to first position in document
- new_cursor = first_cursor_position @tree
- if new_cursor?
- @move_cursor new_cursor
- return false
- when KEY_DOWN
- if @cursor?
- new_cursor = find_down_cursor_position @tree, @cursor, @cursor_ideal_x
- if new_cursor?
- saved_ideal_x = @cursor_ideal_x
- @move_cursor new_cursor
- @cursor_ideal_x = saved_ideal_x
- else
- # move cursor to first position in document
- new_cursor = last_cursor_position @tree
- if new_cursor?
- @move_cursor new_cursor
- return false
- when KEY_END
- new_cursor = last_cursor_position @tree
- if new_cursor?
- @move_cursor new_cursor
- return false
- when KEY_BACKSPACE
- @on_key_backspace e
- return false
- when KEY_DELETE
- return false unless @cursor?
- new_cursor = find_next_cursor_position @tree, n: @cursor.n, i: @cursor.i
- # try moving cursor right and then running backspace code
- # TODO replace this hack with a real implementation
- if new_cursor?
- # try to detect common case where cursor goes inside an block,
- # but doesn't pass a character (and advance one more in that case)
- if new_cursor.n isnt @cursor.n and new_cursor.i is 0
- if new_cursor.n.type is 'text' and new_cursor.n.text.length > 0
- if new_cursor.n.parent?
- unless @is_display_block new_cursor.n.parent
- # FIXME should test run sibling
- new_cursor = new_cursor_position n: new_cursor.n, i: new_cursor.i + 1
- if new_cursor?
- if new_cursor.n isnt @cursor.n or new_cursor.i isnt @cursor.i
- @move_cursor new_cursor
- @on_key_backspace e
- return false
- when KEY_ENTER
- @on_key_enter e
- return false
- when KEY_ESCAPE
- @kill_cursor()
- return false
- when KEY_HOME
- new_cursor = first_cursor_position @tree
- if new_cursor?
- @move_cursor new_cursor
- return false
- when KEY_INSERT
- return false
- when KEY_PAGE_UP
- @on_page_up_key e
- return false
- when KEY_PAGE_DOWN
- @on_page_down_key e
- return false
- when KEY_TAB
- return false
- onkeypress: (e) ->
- return if e.ctrlKey
- return false if ignore_key_codes[e.keyCode]?
- char = e.charCode ? e.keyCode
- if char and @cursor?
- char = String.fromCharCode char
- @insert_character @cursor.n, @cursor.i, char
- @text_cleanup @cursor.n
- @changed()
- new_cursor = new_cursor_position n: @cursor.n, i: @cursor.i + 1
- if new_cursor
- @move_cursor new_cursor
- else
- console.log "ERROR: couldn't find cursor position after insert"
- @kill_cursor()
- return false
- on_key_enter: (e) -> # enter key pressed
- return unless @cursor_visible
- cur_block = @cursor.n
- loop
- if cur_block.type is 'tag'
- if is_display_block cur_block.el
- break
- return unless cur_block.parent?
- cur_block = cur_block.parent
- # find array to insert new element into
- if cur_block.parent is @tree_parent # top-level
- parent_el = @idoc.body
- pc = @tree
- else
- parent_el = cur_block.parent.el
- pc = cur_block.parent.children
- # find index of current block in its parent
- for n, i in pc
- break if n is cur_block
- i += 1 # we want to be after it
- if i < pc.length
- before = pc[i].el
- else
- before = null
- # TODO if content after cursor
- # TODO new block is empty
- new_text = new peach_parser.Node 'text', text: ' '
- new_node = new peach_parser.Node 'tag', name: 'p', parent: cur_block.parent, attrs: {style: 'white-space: pre-wrap'}, children: [new_text]
- new_text.parent = new_node
- new_text.el = domify @idoc, text: ' '
- new_node.el = domify @idoc, p: style: 'white-space: pre-wrap', children: [new_text.el]
- pc.splice i, 0, new_node
- parent_el.insertBefore new_node.el, before
- @changed()
- new_cursor = new_cursor_position n: new_text, i: 0
- throw 'bork bork' unless new_cursor?
- @move_cursor new_cursor
- # TODO move content past cursor into this new block
- # unlike the global function, this takes a Node, not an element
- is_display_block: (n) ->
- # TODO stop calling global function, merge it into here, use iframe's window object
- return false unless n.type is 'tag'
- return is_display_block n.el
- find_block_parent: (n) ->
- loop
- n = n.parent
- return null unless n?
- return n if @is_display_block n
- return n if n is @tree_parent
- return null
- # return a flat array of nodes (text, <br>, and later also inline-block)
- # that are flowing/wrapping together. n can be the containing block, or any
- # element inside it.
- get_text_run: (n) ->
- ret = []
- if @is_display_block n
- block = n
- else
- block = @find_block_parent n
- return ret unless block?
- traverse_tree block.children, (n) =>
- if n.type is 'text'
- ret.push n
- else if n.type is 'tag'
- if n.name is 'br'
- ret.push n
- else
- disp = @computed_style n
- if disp is 'inline-block'
- ret.push n
- return false # not done traversing
- return ret
- node_is_decendant: (young, old) ->
- while young? and young != @tree_parent
- return true if young is old
- young = young.parent
- return false
- # helper for on_key_backspace
- _merge_left: (state) ->
- # the node prev to n was not prev to it a moment ago, merge with it if reasonable
- pi = state.n.parent.children.indexOf(state.n)
- if pi > 0
- prev = state.n.parent.children[pi - 1]
- if prev.type is 'text'
- state.i = prev.text.length
- prev.text = prev.el.textContent = prev.text + state.n.text
- @remove_node state.n
- state.n = prev
- state.changed = true
- state.moved_cursor = true
- # else # TODO merge possible consecutive matching inline tags at @cursor
- return state
- # helper for on_key_backspace
- # remove n from the dom, also remove its inline parents that are emptied by removing n
- _backspace_node_helper: (n, run = @get_text_run(n), run_i = run.indexOf(n)) ->
- block = @find_block_parent n
- # delete text node
- @remove_node n
- # delete any inline parents
- n = n.parent
- while n? and n isnt block
- # bail if the previous node in this run is also inside the same parent
- if run_i > 0
- break if @node_is_decendant run[run_i - 1], n
- # bail if the next node in this run is also inside the same parent
- if run_i + 1 < run.length
- break if @node_is_decendant run[run_i + 1], n
- # move any sibling nodes to parent. These nodes are not in the text run
- while n.children.length > 0
- @move_node n.children[0], n.parent, n
- # remove (now completely empty) inline parent
- @remove_node n
- # proceed to outer parent
- n = n.parent
- return
- on_key_backspace: (e) ->
- return unless @cursor?
- new_cursor = null
- run = null
- changed = true
- if @cursor.i is 0 # cursor is at start of text node
- run ?= @get_text_run @cursor.n
- run_i = run.indexOf(@cursor.n)
- if run_i is 0 # if at start of text run
- block = @find_block_parent @cursor.n
- prev_cursor = find_prev_cursor_position @tree, n: @cursor.n, i: 0
- if prev_cursor is null # if in first text run of document
- # do nothing (there's nothing text-like to the left of the cursor)
- return
- # else merge with prev/outer text run
- pcb = @find_block_parent prev_cursor.n
- while block.children.length > 0
- @move_node block.children[0], pcb
- @remove_node block
- # merge possible consecutive text nodes at @cursor
- merge_state = n: @cursor.n
- @_merge_left merge_state
- @text_cleanup merge_state.n
- new_cursor = new_cursor_position n: merge_state.n, i: merge_state.i
- else # at start of text node, but not start of text run
- prev = run[run_i - 1]
- if prev.type is 'text' # if previous in text run is text
- if prev.text.length is 1 # if emptying prev (in text run)
- @_backspace_node_helper prev, run, run_i
- merge_state = n: @cursor.n, i: @cursor.i
- @_merge_left merge_state
- @text_cleanup merge_state.n
- new_cursor = new_cursor_position n: merge_state.n, i: merge_state.i
- else # prev in run is text with muliple chars
- # delete last character in prev
- prev.text = prev.text.substr(0, prev.text.length - 1)
- prev.el.textContent = prev.text
- @text_cleanup @cursor.n
- new_cursor = new_cursor_position n: @cursor.n, i: @cursor.i
- else if prev.name is 'br' or prev.name is 'hr'
- @_backspace_node_helper prev, run, run_i
- merge_state = n: @cursor.n, i: @cursor.i
- @_merge_left merge_state
- @text_cleanup merge_state.n
- new_cursor = new_cursor_position n: merge_state.n, i: merge_state.i
- # FIXME implement this:
- # else # if prev (in run) is inline-block
- # if that inline-block has text in it
- # delete last char in prev inlineblock
- # if that empties it
- # delete it
- # merge left
- # else
- # move cursor inside
- # else
- # delete prev (inline) block
- # merge left
- # auto-delete this @cursor.parent(s) if this empties them
- else # cursor is not at start of text node
- run ?= @get_text_run @cursor.n
- if @cursor.n.text.length is 1 # if emptying text node
- if run.length is 1 # if emptying text run (of text/br/hr/inline-block)
- # remove inline-parents of @cursor.n
- block = @find_block_parent @cursor.n
- changed = false
- n = @cursor.n.parent
- # note: this doesn't use _backspace_node_helper because:
- # 1. we don't want to delete the target node (we're replacing it's contents)
- # 2. we want to track whether anything was removed
- # 3. we know already know there's no other text from this run anywhere
- while n and n isnt block
- changed = true
- while n.children.length > 0
- @move_node n.children[0], n.parent, n
- @remove_node n
- n = n.parent
- # replace @cursor.n with a single (preserved) space
- if @cursor.n.text != ' '
- changed = true
- @cursor.n.text = @cursor.n.el.textContent = ' '
- if changed
- @text_cleanup @cursor.n
- # place the cursor to the left of that space
- new_cursor = new_cursor_position n: @cursor.n, i: 0
- else # emptying a text node (but not a whole text run)
- # figure out where cursor should land
- block = @find_block_parent @cursor.n
- new_cursor = find_prev_cursor_position @tree, n: @cursor.n, i: 0
- ncb = @find_block_parent new_cursor.n
- if ncb isnt block
- new_cursor = find_next_cursor_position @tree, n: @cursor.n, i: 1
- # delete text node and cleanup emptied parents
- run_i = run.indexOf @cursor.n
- @_backspace_node_helper @cursor.n, run, run_i
- # see if new adjacent siblings should merge
- # TODO make smarter
- if run_i > 0 and run_i + 1 < run.length
- if run[run_i - 1].type is 'text' and run[run_i + 1].type is 'text'
- merge_state = n: run[run_i + 1]
- @_merge_left merge_state
- if merge_state.moved_cursor
- new_cursor = merge_state
- # update whitespace preservation
- @text_cleanup(block)
- # update cursor x/y in case things moved around
- if new_cursor?
- if new_cursor.n.el.parentNode # still in dom after cleanup
- new_cursor = new_cursor_position n: new_cursor.n, i: new_cursor.i
- else
- new_cursor = null
- else # there's a char left of cursor that we can delete without emptying anything
- # delete character
- need_text_cleanup = true
- if @cursor.i > 1 and @cursor.i < @cursor.n.text.length
- pre = @cursor.n.text.substr(@cursor.i - 2, 3)
- post = pre.charAt(0) + pre.charAt(2)
- if str_has_ws_run(pre) is str_has_ws_run(post)
- need_text_cleanup = false
- @remove_character(@cursor.n, @cursor.i - 1)
- # call text_cleanup if whe created/removed a whitespace run
- if need_text_cleanup
- @text_cleanup @cursor.n
- new_cursor = new_cursor_position n: @cursor.n, i: @cursor.i - 1
- # mark document changed and move the cursor
- if changed?
- @changed()
- if new_cursor?
- @move_cursor new_cursor
- else
- @kill_cursor()
- return
- on_page_up_key: (e) ->
- if @wrap2.scrollTop is 0
- return unless @cursor?
- new_cursor = first_cursor_position @tree
- if new_cursor?
- if new_cursor.n isnt @cursor.n or new_cursor.i isnt @cursor.i
- @move_cursor new_cursor
- return
- if @cursor?
- screen_y = @cursor.y - @wrap2.scrollTop
- scroll_amount = @wrap2_height - breathing_room
- @wrap2.scrollTop = Math.max 0, @wrap2.scrollTop - scroll_amount
- if @cursor?
- @move_cursor_into_view screen_y + @wrap2.scrollTop
- on_page_down_key: (e) ->
- lowest_scrollpos = @wrap2.scrollHeight - @wrap2_height
- if @wrap2.scrollTop is lowest_scrollpos
- return unless @cursor?
- new_cursor = last_cursor_position @tree
- if new_cursor?
- if new_cursor.n isnt @cursor.n or new_cursor.i isnt @cursor.i
- @move_cursor new_cursor
- return
- if @cursor?
- screen_y = @cursor.y - @wrap2.scrollTop
- scroll_amount = @wrap2_height - breathing_room
- @wrap2.scrollTop = Math.min lowest_scrollpos, @wrap2.scrollTop + scroll_amount
- if @cursor?
- @move_cursor_into_view screen_y + @wrap2.scrollTop
- return
- move_cursor_into_view: (y_target) ->
- return if y_target is @cursor.y
- was = @cursor
- y_min = @wrap2.scrollTop
- unless @wrap2.scrollTop is 0
- y_min += breathing_room
- y_max = @wrap2.scrollTop + @wrap2_height
- unless @wrap2.scrollTop is @wrap2.scrollHeight - @wrap2_height # downmost
- y_max -= breathing_room
- y_target = Math.min y_target, y_max
- y_target = Math.max y_target, y_min
- if y_target < @cursor.y
- finder = find_up_cursor_position
- far_enough = (cur, target_y) ->
- return cur.y + cur.h <= target_y
- else
- finder = find_down_cursor_position
- far_enough = (cur, y_target) ->
- return cur.y >= y_target
- loop
- cur = finder @tree, was, @cursor_ideal_x
- break unless cur?
- break if far_enough cur, y_target
- was = cur
- if was is @cursor
- was = null
- if was?
- if was.y + was.h > y_max
- was = null
- else if was.y < y_min
- was = null
- if cur?
- if cur.y + cur.h > y_max
- cur = null
- else if cur.y < y_min
- cur = null
- if cur? and was?
- # both valid, pick best
- if cur.y < y_min
- new_cursor = was
- else if was.y + was.h > y_max
- new_cursor = cur
- else if cur.y - y_target < y_target - was.y
- new_cursor = cur
- else
- new_cursor = was
- else
- new_cursor = was ? cur
- if new_cursor?
- saved_ideal_x = @cursor_ideal_x
- @move_cursor new_cursor
- @cursor_ideal_x = saved_ideal_x
- return
- clear_dom: -> # remove all the editable content (and cursor, overlays, etc)
- while @idoc.body.childNodes.length
- @idoc.body.removeChild @idoc.body.childNodes[0]
- @kill_cursor()
- return
- load_html: (html) ->
- @tree = peach_parser.parse html, @parser_opts
- if !@tree[0]?.parent
- @tree = peach_parser.parse '<p style="white-space: pre-wrap"> </p>', @parser_opts
- @tree_parent = @tree[0]?.parent
- @tree_parent.el = @idoc.body
- @clear_dom()
- instantiate_tree @tree, @tree_parent.el
- @collapse_whitespace @tree
- @changed()
- changed: ->
- @in_el.onchange = null
- @in_el.value = @pretty_html @tree
- @in_el.onchange = =>
- @load_html @in_el.value
- @adjust_iframe_height()
- adjust_iframe_height: ->
- s = @wrap2.scrollTop
- # when the content gets shorter, the idoc's body tag will continue to
- # report the old (too big) height in Chrome. The workaround is to
- # shrink the iframe before the content height:
- @iframe.style.height = "10px"
- h = parseInt(@idoc.body.scrollHeight, 10)
- @iframe.style.height = "#{h}px"
- @wrap2.scrollTop = s
- # true if n is text node with only one caracter, and the only child of a tag
- is_only_char_in_tag: (n, i) ->
- return false unless n.type is 'text'
- return false unless n.text.length is 1
- return false if n.parent is @tree_parent
- return false unless n.parent.children.length is 1
- return true
- # true if n is text node with just a space in it, and the only child of a tag
- is_lone_space: (n, i) ->
- return false unless n.type is 'text'
- return false unless n.text is ' '
- return false if n.parent is @tree_parent
- return false unless n.parent.children.length is 1
- return true
- # detect special case: typing before a space that's the only thing in a block/doc
- # reason: enter key creates blocks with just a space in them
- insert_should_replace: (n, i) ->
- return false unless i is 0
- return false unless n.text is ' '
- return true if n.parent is @tree_parent
- if n.parent.children.length is 1
- if n.parent.children[0] is n
- # n is only child
- return true
- return false
- # after calling this, you MUST call changed() and text_cleanup()
- insert_character: (n, i, char) ->
- return if n.parent is @tree_parent # FIXME implement text nodes at top level
- # insert the character
- if @insert_should_replace n, i
- n.text = char
- else if i is 0
- n.text = char + n.text
- else if i is n.text.length
- # replace the space
- n.text += char
- else
- n.text =
- n.text.substr(0, i) +
- char +
- n.text.substr(i)
- n.el.nodeValue = n.text
- # WARNING: after calling this, you MUST call changed() and text_cleanup()
- remove_character: (n, i) ->
- n.text = n.text.substr(0, i) + n.text.substr(i + 1)
- n.el.nodeValue = n.text
- computed_style: (n, prop) ->
- if n.type is 'text'
- n = n.parent
- style = @iframe.contentWindow.getComputedStyle n.el, null
- return style.getPropertyValue prop
- # returns the new white-space value that will preserve spaces for node n
- preserve_space: (n, ideal_target) ->
- if n.type is 'text'
- target = n.parent
- else
- target = n
- while target isnt ideal_target and not target.el.style.whiteSpace
- unless target?
- console.log "bug #967123"
- return
- target = target.parent
- ws = ws_props[target.el.style.whiteSpace]?.to_preserve
- ws ?= 'pre-wrap'
- target.el.style.whiteSpace = ws
- @update_style_from_el target
- return ws
- update_style_from_el: (n) ->
- style = n.el.getAttribute 'style'
- if style?
- n.attrs.style = style
- else
- if n.attrs.style?
- delete n.attrs.style
- # remove whitespace that would be trimmed
- # replace whitespace that would collapse with a single space
- # FIXME remove whitespace from after <br> (but not before)
- # FIXME rewrite to
- # check computed white-space prop on txt parents
- # batch replace txt node contents (ie don't loop for each char)
- collapse_whitespace: (tree = @tree) ->
- prev = cur = next = null
- prev_i = cur_i = next_i = 0
- prev_pos = pos = next_pos = null
- prev_px = cur_px = next_px = null
- first = true
- removed_char = null
-
- tree_remove_empty_text_nodes(tree)
-
- iterate = (tree, cb) ->
- for n in tree
- if n.type is 'text'
- i = 0
- while i < n.text.length # don't foreach, cb might remove chars
- advance = cb n, i
- if advance
- i += 1
- if n.type is 'tag'
- block = is_display_block n.el
- if block
- cb null
- if n.children.length > 0
- iterate n.children, cb
- if block
- cb null
- # remove cur char
- remove = (undo) ->
- if undo
- cur.el.textContent = cur.text = (cur.text.substr 0, cur_i) + removed_char + (cur.text.substr cur_i)
- if next is cur # in same text node
- next_i += 1
- return -1
- else
- removed_char = cur.text.charAt(cur_i)
- cur.el.textContent = cur.text = (cur.text.substr 0, cur_i) + (cur.text.substr cur_i + 1)
- if next is cur # in same text node
- if next_i is 0
- throw "how is this possible?"
- next_i -= 1
- return 1
- replace_with_space = (undo) ->
- if undo
- cur.text = (cur.text.substr 0, cur_i) + removed_char + (cur.text.substr cur_i + 1)
- cur.el.textContent = cur.text
- else
- removed_char = cur.text.charAt(cur_i)
- if removed_char isnt ' '
- cur.text = (cur.text.substr 0, cur_i) + ' ' + (cur.text.substr cur_i + 1)
- cur.el.textContent = cur.text
- return 0
- # return true if cur was removed from the dom (ie re-use same prev)
- operate = ->
- # cur definitately set
- # prev and/or next might be null, indicating the start/end of a display:block
- return false unless is_space_code cur.text.charCodeAt cur_i
- fixers = [remove, replace_with_space]
- # check for common case: single whitespace surrounded by non-whitespace chars
- if prev? and next?
- unless (is_space_code prev.text.charCodeAt prev_i) or (is_space_code next.text.charCodeAt next_i)
- dbg = cur.text.charCodeAt cur_i
- if cur.text.charAt(cur_i) is ' ' # perens required
- # single space can't collapse, doesn't need fixin'
- return false
- else
- # tab, newline, etc, can't collapse, but maybe should be replaced
- fixers = [replace_with_space]
- bounds = text_range_bounds cur.el, cur_i, cur_i + 1
- # consistent cases:
- # 1. zero rects returned by getClientRects() means collapsed space
- if bounds is null
- return remove()
- # 2. width greater than zero means visible space
- if bounds.w > 0
- # has bounds, don't try removing
- fixers = [replace_with_space]
- # now the weird edge cases...
- #
- # firefox and chromium both report zero width for characters at the end
- # of a line where the text wraps (automatically, due to word-wrap) to
- # the next line. These do not appear to be distinguishable from
- # collapsed spaces via the range/bounds api, so...
- #
- # remove it from the dom, and if prev or next moves, put it back.
- #
- # this block (try changing it, put it back if something moves) is also
- # used on collapsable whitespace characters besides space. In this case
- # the character is replaced with a normal space character instead of
- # removed
- if prev? and not prev_px?
- prev_px = new_cursor_position n: prev, i: prev_i
- if next? and not next_px?
- next_px = new_cursor_position n: next, i: next_i
- #if prev is null and next is null
- # parent_px = cur.parent.el.getBoundingClientRect()
- undo_arg = true # just for readabality
- removed = 0
- for fixer in fixers
- break if removed > 0
- removed += fixer()
- need_undo = false
- if prev?
- if prev_px?
- new_prev_px = new_cursor_position n: prev, i: prev_i
- if new_prev_px?
- if new_prev_px.x isnt prev_px.x or new_prev_px.y isnt prev_px.y
- need_undo = true
- else
- need_undo = true
- else
- console.log "this shouldn't happen, we remove spaces that don't locate"
- if next? and not need_undo
- if next_px?
- new_next_px = new_cursor_position n: next, i: next_i
- if new_next_px?
- if new_next_px.x isnt next_px.x or new_next_px.y isnt next_px.y
- need_undo = true
- else
- need_undo = true
- #else
- # console.log "removing space becase space after it is collapsed"
- if need_undo
- removed += fixer undo_arg
- if removed > 0
- return true
- else
- return false
- # pass null at start/end of display:block
- queue = (n, i) ->
- next = n
- next_i = i
- next_px = null
- advance = true
- if cur?
- removed = operate()
- # don't advance (to the next character next time) if we removed a
- # character from the same text node as ``next``, because doing so
- # renumbers the indexes in that string
- if removed and cur is next
- advance = false
- else
- removed = false
- unless removed
- prev = cur
- prev_i = cur_i
- prev_px = cur_px
- cur = next
- cur_i = next_i
- cur_px = next_px
- return advance
- queue null
- iterate tree, queue
- queue null
-
- tree_remove_empty_text_nodes(tree)
- return
- # call this after you insert or remove inline nodes. It will:
- # merge consecutive text nodes
- # remove empty text nodes
- # adjust white-space property
- # note: this assumes that all whitespace in text nodes should be displayed
- # (ie not collapse or be trimmed) and will change the white-space property
- # as needed to achieve this.
- text_cleanup: (n) ->
- if @is_display_block n
- block = n
- else
- block = @find_block_parent n
- return unless block?
- run = @get_text_run block
- return unless run?
- # merge consecutive text nodes
- if run.length > 1
- i = 1
- prev = run[0]
- while i < run.length
- n = run[i]
- if prev.type is 'text' and n.type is 'text'
- if prev.parent is n.parent
- prev_i = n.parent.children.indexOf prev
- n_i = n.parent.children.indexOf n
- if n_i is prev_i + 1
- prev.text = prev.text + n.text
- prev.el.textContent = prev.text
- @remove_node n
- run.splice i, 1
- continue # don't increment i or change prev
- i += 1
- prev = n
- # remove empty text nodes
- i = 0
- while i < run.length
- n = run[i]
- if n.type is 'text'
- if n.text is ''
- @remove_node n
- # FIXME maybe remove parents recursively if this makes them empty
- run.splice i, 1
- continue # don't increment i
- i += 1
- # note: inline tags can have white-space:pre-line/etc
- # note: inline-blocks have their whitespace collapsed independantly of outer run
- # note: inline-blocks are treated like non-whitespace char even if empty
- if block.el.style.whiteSpace?
- ws = block.el.style.whiteSpace
- if ws_props[ws]
- if ws_props[ws].space
- if ws_props[ws].to_collapse is 'normal'
- block.el.style.whiteSpace = null
- else
- block.el.style.whiteSpace = ws_props[ws].to_collapse
- @update_style_from_el block
- # note: space after <br> colapses, but not space before
- # check for spaces that would collapse without help
- eats_start_sp = true # if the next node starts with space it collapses (unless pre)
- prev = null
- for n in run
- if n.type is 'tag'
- if n.name is 'br'
- eats_start_sp = true
- else
- eats_start_sp = false
- else # TEXT
- need_preserve = false
- if n.type isnt 'text'
- console.log "bug #232308"
- return
- if eats_start_sp
- if is_space_code n.text.charCodeAt 0
- need_preserve = true
- unless need_preserve
- need_preserve = multi_sp_regex.test n.text
- if need_preserve
- # do we have it already?
- ws = @computed_style n, 'white-space' # FIXME implement this
- unless ws_props[ws]?.space
- # 2nd arg is ideal target for css rule
- ws = @preserve_space n, block
- eats_start_sp = false
- else
- if is_space_code n.text.charCodeAt(n.text.length - 1)
- ws = @computed_style n, 'white-space' # FIXME implement this
- if ws_props[ws]?.space
- eats_start_sp = false
- else
- eats_start_sp = true
- else
- eats_start_sp = false
- # check if text ends with a collapsable space
- if run.length > 0
- last = run[run.length - 1]
- if last.type is 'text'
- if eats_start_sp
- @preserve_space last, block
- return
- css_clear: (n, prop) ->
- return unless n.attrs.style?
- return if n.attrs.style is ''
- css_delimiter_regex = new RegExp('\s*;\s*', 'g') # FIXME make this global
- styles = n.attrs.style.trim().split css_delimiter
- return unless styles.length > 0
- if styles[styles.length - 1] is ''
- styles.pop()
- return unless styles.length > 0
- i = 0
- while i < styles.length
- if styles[i].substr(0, 12) is 'white-space:'
- styles.splice i, 1
- else
- i += 1
- return
- # WARNING: after calling this one or more times, you MUST:
- # if it's inline: call @text_cleanup
- # call @changed()
- remove_node: (n) ->
- i = n.parent.children.indexOf n
- if i is -1
- throw "BUG #9187112313"
- n.el.parentNode.removeChild n.el
- n.parent.children.splice i, 1
- return
- # remove a node from the tree/dom, insert into new_parent before insert_before?end
- # WARNING: after calling this one or more times, you MUST:
- # if it's inline: call @text_cleanup
- # call @changed()
- move_node: (n, new_parent, insert_before = null) ->
- i = n.parent.children.indexOf n
- if i is -1
- throw "Error: tried to remove node, but it's not in it's parents list of children"
- return
- if insert_before?
- before_i = new_parent.children.indexOf insert_before
- if i is -1
- throw "Error: tried to move a node to be before a non-existent node"
- insert_before = insert_before.el
- @remove_node n
- if insert_before?
- new_parent.el.insertBefore n.el, insert_before
- new_parent.children.splice before_i, 0, n
- else
- new_parent.el.appendChild n.el, insert_before
- new_parent.children.push n
- n.parent = new_parent
- return
- kill_cursor: -> # remove it, forget where it was
- if @cursor_visible
- @cursor_el.parentNode.removeChild @cursor_el
- @cursor_visible = false
- @cursor = null
- @annotate null
- return
- move_cursor: (cursor) ->
- @cursor_ideal_x = cursor.x
- @cursor = cursor
- unless @cursor_visible
- @cursor_el = domify @outer_idoc, div: id: 'cursor'
- @overlay.appendChild @cursor_el
- @cursor_visible = true
- @cursor_el.style.left = "#{cursor.x + overlay_padding - 1}px"
- if cursor.h < 5
- height = 12
- else
- height = cursor.h
- @cursor_el.style.top = "#{cursor.y + overlay_padding + Math.round(height * .07)}px"
- @cursor_el.style.height = "#{Math.round height * 0.82}px"
- @annotate cursor.n
- @scroll_into_view cursor.y, height
- return
- scroll_into_view: (y, h = 0) ->
- y += overlay_padding # convert units from @idoc to @wrap2
- # very top of document
- if y <= breathing_room
- @wrap2.scrollTop = 0
- return
- # very bottom of document
- if y + h >= @wrap2.scrollHeight - breathing_room
- @wrap2.scrollTop = @wrap2.scrollHeight - @wrap2_height
- return
- # The most scrolled up (lowest value for scrollTop) that would be OK
- upmost = y + h + breathing_room - @wrap2_height
- upmost = Math.max(upmost, 0)
- # the most scrolled down (highest value for scrollTop) that would be OK
- downmost = y - breathing_room
- downmost = Math.min(downmost, @wrap2.scrollHeight - @wrap2_height)
- if upmost > downmost # means h is too big to fit
- # scroll so top is visible
- @wrap2.scrollTop = downmost
- return
- if @wrap2.scrollTop < upmost
- @wrap2.scrollTop = upmost
- return
- if @wrap2.scrollTop > downmost
- @wrap2.scrollTop = downmost
- return
- return
- annotate: (n) ->
- while @matting.length > 0
- @overlay.removeChild @matting[0]
- @matting.shift()
- return unless n?
- prev_bounds = x: 0, y: 0, w: 0, h: 0
- alpha = 0.1
- while n?.el? and n isnt @tree_parent
- if n.type is 'text'
- n = n.parent
- continue
- bounds = get_el_bounds n.el
- return unless bounds?
- if bounds.x is prev_bounds.x and bounds.y is prev_bounds.y and bounds.w is prev_bounds.w and bounds.h is prev_bounds.h
- n = n.parent
- continue
- ann_box = domify @outer_idoc, div: class: 'ann_box', style: "left: #{bounds.x - 1 + overlay_padding}px; top: #{bounds.y - 2 + overlay_padding}px; width: #{bounds.w}px; height: #{bounds.h}px" # outline: 1000px solid rgba(0,153,255,#{alpha});
- @overlay.appendChild ann_box
- @matting.push ann_box
- ann_tag = domify @outer_idoc, div: class: 'ann_tag', style: "left: #{bounds.x + 1 + overlay_padding}px; top: #{bounds.y - 7 + overlay_padding}px", children: [domify @outer_idoc, text: " #{n.name} "]
- @overlay.appendChild ann_tag
- @matting.push ann_tag
- n = n.parent
- alpha *= 1.5
- pretty_html: (tree, indent = '', parent_flags = pre_ish: false, block: true, want_nl: false) ->
- ret = ''
- want_nl = parent_flags.want_nl
- prev_in_flow_is_text = false
- prev_in_flow_is_block = false
- for n, i in tree
- # figure out flags
- inner_flags = want_nl: true
- is_br = false
- switch n.type
- when 'tag'
- if n.name is 'br'
- is_br = true
- is_text = false
- if n.el.currentStyle?
- cs = n.el.currentStyle
- whitespace = cs['white-space']
- display = cs['display']
- position = cs['position']
- float = cs['float']
- visibility = cs['visibility']
- else
- cs = @iframe.contentWindow.getComputedStyle(n.el, null)
- whitespace = cs.getPropertyValue 'white-space'
- display = cs.getPropertyValue 'display'
- position = cs.getPropertyValue 'position'
- float = cs.getPropertyValue 'float'
- visibility = cs.getPropertyValue 'visibility'
- if n.name is 'textarea'
- inner_flags.pre_ish = true
- else
- inner_flags.pre_ish = whitespace.substr(0, 3) is 'pre'
- switch float
- when 'left', 'right'
- in_flow = false
- else
- switch position
- when 'absolute', 'fixed'
- in_flow = false
- else
- if 'display' is 'none'
- in_flow = false
- else
- switch visibility
- when 'hidden', 'collapse'
- in_flow = false
- else # visible
- in_flow = true
- switch display
- when 'inline', 'none'
- inner_flags.block = false
- is_block = in_flow_block = false
- when 'inline-black'
- inner_flags.block = true
- is_block = in_flow_block = false
- else # block, table, etc
- inner_flags.block = true
- is_block = true
- in_flow_block = in_flow
- when 'text'
- is_text = true
- is_block = false
- in_flow = true
- in_flow_block = false
- else # 'comment', 'doctype'
- is_text = false
- is_block = false
- in_flow = false
- in_flow_block = false
- # print whitespace if we can
- unless parent_flags.pre_ish
- unless prev_in_flow_is_text and is_br
- if (i is 0 and parent_flags.block) or in_flow_block or prev_in_flow_is_block
- if want_nl
- ret += "\n"
- ret += indent
- switch n.type
- when 'tag'
- ret += '<' + n.name
- attr_keys = []
- for k of n.attrs
- attr_keys.unshift k
- #attr_keys.sort()
- for k in attr_keys
- ret += " #{k}"
- if n.attrs[k].length > 0
- ret += "=\"#{enc_attr n.attrs[k]}\""
- ret += '>'
- unless void_elements[n.name]?
- if inner_flags.block
- next_indent = indent + ' '
- else
- next_indent = indent
- if n.children.length
- ret += @pretty_html n.children, next_indent, inner_flags
- ret += "</#{n.name}>"
- when 'text'
- ret += enc_text n.text
- when 'comment'
- ret += "<!--#{n.text}-->" # TODO encode?
- when 'doctype'
- ret += "<!DOCTYPE #{n.name}"
- if n.public_identifier? and n.public_identifier.length > 0
- ret += " \"#{n.public_identifier}\""
- if n.system_identifier? and n.system_identifier.length > 0
- ret += " \"#{n.system_identifier}\""
- ret += ">"
- want_nl = true
- if in_flow
- prev_in_flow_is_text = is_text
- prev_in_flow_is_block = is_block or (in_flow and is_br)
- if tree.length
- # output final newline if allowed
- unless parent_flags.pre_ish
- if prev_in_flow_is_block or parent_flags.block
- ret += "\n#{indent.substr 4}"
- return ret
- onblur: ->
- @kill_cursor()
- have_focus: ->
- @editor_is_focused = true
- @poll_for_blur()
- poll_for_blur: ->
- return if @poll_for_blur_timeout? # already polling
- @poll_for_blur_timeout = timeout 150, =>
- next_frame => # pause polling when browser knows we're not active/visible/etc.
- @poll_for_blur_timeout = null
- if document.activeElement is @outer_iframe
- @poll_for_blur()
- else
- @editor_is_focused = false
- @onblur()
-
-window.peach_html5_editor = (args...) ->
- return new PeachHTML5Editor args...
-
-# test in browser: peach_html5_editor(document.getElementsByTagName('textarea')[0])
--- /dev/null
+// Copyright 2015 Jason Woofenden
+// This file implements an WYSIWYG editor in the browser (no contenteditable)
+//
+// This program is free software: you can redistribute it and/or modify it under
+// the terms of the GNU Affero General Public License as published by the Free
+// Software Foundation, either version 3 of the License, or (at your option) any
+// later version.
+//
+// This program is distributed in the hope that it will be useful, but WITHOUT
+// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
+// details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+(function() {
+var KEY_BACKSPACE, KEY_DELETE, KEY_DOWN, KEY_END, KEY_ENTER, KEY_ESCAPE, KEY_HOME, KEY_INSERT, KEY_LEFT, KEY_PAGE_DOWN, KEY_PAGE_UP, KEY_RIGHT, KEY_TAB, KEY_UP, breathing_room, control_key_codes, enc_attr_regex, enc_text_regex, event_return, find_prev_cursor_position, find_up_cursor_position, get_el_bounds, ignore_key_codes, js_attr_regex, multi_sp_regex, no_text_elements, overlay_padding, text_range_bounds, valid_attr_regex, void_elements, ws_props, xy_to_cursor, slice = [].slice
+
+// SETTINGS
+overlay_padding = 10
+breathing_room = 30 // minimum pixels above/below cursor (scrolling)
+
+function timeout (ms, cb) {
+ return setTimeout(cb, ms)
+}
+
+function next_frame (cb) {
+ if (window.requestAnimationFrame != null) {
+ window.requestAnimationFrame(cb)
+ } else {
+ timeout(16, cb)
+ }
+}
+
+function this_url_sans_path () {
+ var clip, ret
+ ret = "" + window.location.href
+ clip = ret.lastIndexOf('#')
+ if (clip > -1) {
+ ret = ret.substr(0, clip)
+ }
+ clip = ret.lastIndexOf('?')
+ if (clip > -1) {
+ ret = ret.substr(0, clip)
+ }
+ clip = ret.lastIndexOf('/')
+ if (clip > -1) {
+ ret = ret.substr(0, clip + 1)
+ }
+ return ret
+}
+
+// table too look up the properties of various values for css's white-space
+ws_props = {
+ normal: {
+ space: false, // spaces are not preserved/rendered
+ newline: false, // newlines are not preserved/rendered
+ wrap: true, // text is word-wrapped
+ to_preserve: 'pre-wrap' // to preservespaces, change white-space to this
+ },
+ nowrap: {
+ space: false,
+ newline: false,
+ wrap: false,
+ to_preserve: 'pre'
+ },
+ 'pre-line': {
+ space: false,
+ newline: true,
+ wrap: true,
+ to_preserve: 'pre-wrap'
+ },
+ pre: {
+ space: true,
+ newline: true,
+ wrap: false,
+ to_collapse: 'nowrap'
+ },
+ 'pre-wrap': {
+ space: true,
+ newline: true,
+ wrap: true,
+ to_collapse: 'normal'
+ }
+}
+
+// xml 1.0 spec, chromium and firefox accept these, plus lots of unicode chars
+valid_attr_regex = new RegExp('^[a-zA-Z_:][-a-zA-Z0-9_:.]*$')
+// html5 spec is much more lax, but chromium won't let me make at attribute with the name "4"
+js_attr_regex = new RegExp('^[oO][nN].')
+// html5 spec says that only these characters are collapsable
+multi_sp_regex = new RegExp('[\u0020\u0009\u000a\u000c\u000d][\u0020\u0009\u000a\u000c\u000d]')
+
+function str_has_ws_run (str) {
+ return multi_sp_regex.test(str)
+}
+
+// text nodes don't have getBoundingClientRect(), so use selection api to find
+// it.
+get_el_bounds = window.bounds = function(el) {
+ var doc, range, rect, win, x_fix, y_fix
+ if (el.getBoundingClientRect != null) {
+ rect = el.getBoundingClientRect()
+ } else {
+ // text nodes don't have getBoundingClientRect(), so use range api
+ range = el.ownerDocument.createRange()
+ range.selectNodeContents(el)
+ rect = range.getBoundingClientRect()
+ }
+ doc = el.ownerDocument.documentElement
+ win = el.ownerDocument.defaultView
+ y_fix = win.pageYOffset - doc.clientTop
+ x_fix = win.pageXOffset - doc.clientLeft
+ return {
+ x: rect.left + x_fix,
+ y: rect.top + y_fix,
+ w: rect.width != null ? rect.width : rect.right - rect.left,
+ h: rect.height != null ? rect.height : rect.top - rect.bottom
+ }
+}
+
+function is_display_block (el) {
+ if (el.currentStyle != null) {
+ return el.currentStyle.display === 'block'
+ } else {
+ return window.getComputedStyle(el, null).getPropertyValue('display') === 'block'
+ }
+}
+
+// Pass return value from dom event handlers to this.
+// If they return false, this will addinionally stop propagation and default.
+function event_return (e, bool) {
+ if (bool === false) {
+ if (e.stopPropagation != null) {
+ e.stopPropagation()
+ }
+ if (e.preventDefault != null) {
+ e.preventDefault()
+ }
+ }
+ return bool
+}
+
+// Warning: currently assumes you're asking about a single character
+// Note: chromium returns multiple bounding rects for a space at a line-break
+// Note: chromium's getBoundingClientRect() is broken (when zero-area client rects)
+// Note: sometimes returns null (eg for whitespace that is not visible)
+text_range_bounds = function(el, start, end) {
+ var doc, range, rect, rects, win, x_fix, y_fix
+ range = document.createRange()
+ range.setStart(el, start)
+ range.setEnd(el, end)
+ rects = range.getClientRects()
+ if (rects.length > 0) {
+ if (rects.length > 1) {
+ if (rects[1].width > rects[0].width) {
+ rect = rects[1]
+ } else {
+ rect = rects[0]
+ }
+ } else {
+ rect = rects[0]
+ }
+ } else {
+ return null
+ }
+ doc = el.ownerDocument.documentElement
+ win = el.ownerDocument.defaultView
+ y_fix = win.pageYOffset - doc.clientTop
+ x_fix = win.pageXOffset - doc.clientLeft
+ return {
+ x: rect.left + x_fix,
+ y: rect.top + y_fix,
+ w: rect.width != null ? rect.width : rect.right - rect.left,
+ h: rect.height != null ? rect.height : rect.top - rect.bottom,
+ rects: rects,
+ bounding: range.getBoundingClientRect()
+ }
+}
+
+function CursorPosition(args) {
+ this.n = args.n != null ? args.n : null
+ this.i = args.i != null ? args.i : null
+ if (args.x != null) {
+ this.x = args.x
+ this.y = args.y
+ this.h = args.h
+ } else {
+ this.set_xyh()
+ }
+}
+
+CursorPosition.prototype.set_xyh = function() {
+ var range, ret
+ range = document.createRange()
+ if (this.n.text.length === 0) {
+ ret = text_range_bounds(this.n.el, 0, 0)
+ } else if (this.i === this.n.text.length) {
+ ret = text_range_bounds(this.n.el, this.i - 1, this.i)
+ if (ret != null) {
+ ret.x += ret.w
+ }
+ } else {
+ ret = text_range_bounds(this.n.el, this.i, this.i + 1)
+ }
+ if (ret != null) {
+ this.x = ret.x
+ this.y = ret.y
+ this.h = ret.h
+ } else {
+ this.x = null
+ this.y = null
+ this.h = null
+ }
+ return ret
+}
+
+function new_cursor_position (args) {
+ var ret
+ ret = new CursorPosition(args)
+ if (ret.x != null) {
+ return ret
+ }
+ return null
+}
+
+// encode text so it can be safely placed inside an html attribute
+enc_attr_regex = new RegExp('(&)|(")|(\u00A0)', 'g')
+function enc_attr (txt) {
+ return txt.replace(enc_attr_regex, function(match, amp, quote) {
+ if (amp) {
+ return '&'
+ }
+ if (quote) {
+ return '"'
+ }
+ return ' '
+ })
+}
+enc_text_regex = new RegExp('(&)|(<)|(\u00A0)', 'g')
+function enc_text (txt) {
+ return txt.replace(enc_text_regex, function(match, amp, lt) {
+ if (amp) {
+ return '&'
+ }
+ if (lt) {
+ return '<'
+ }
+ return ' '
+ })
+}
+
+void_elements = {
+ area: true,
+ base: true,
+ br: true,
+ col: true,
+ embed: true,
+ hr: true,
+ img: true,
+ input: true,
+ keygen: true,
+ link: true,
+ meta: true,
+ param: true,
+ source: true,
+ track: true,
+ wbr: true
+}
+// TODO make these always pretty-print (on the inside) like blocks
+// TODO careful though: whitespace might get pushed to parent, which might be rendered
+no_text_elements = { // these elements never contain text
+ select: true,
+ table: true,
+ tr: true,
+ thead: true,
+ tbody: true,
+ ul: true,
+ ol: true
+}
+
+function domify (doc, hash) {
+ var attrs, el, i, k, tag, v
+ for (tag in hash) {
+ attrs = hash[tag]
+ if (tag === 'text') {
+ return document.createTextNode(attrs)
+ }
+ el = document.createElement(tag)
+ for (k in attrs) {
+ v = attrs[k]
+ if (k === 'children') {
+ for (i = 0; i < v.length; i++) {
+ el.appendChild(v[i])
+ }
+ } else {
+ el.setAttribute(k, v)
+ }
+ }
+ }
+ return el
+}
+
+ignore_key_codes = {
+ '18': true, // alt
+ '20': true, // capslock
+ '17': true, // ctrl
+ '144': true, // numlock
+ '16': true, // shift
+ '91': true // windows "start" key
+}
+// key codes: (valid on keydown, not keypress)
+KEY_LEFT = 37
+KEY_UP = 38
+KEY_RIGHT = 39
+KEY_DOWN = 40
+KEY_BACKSPACE = 8 // <--
+KEY_DELETE = 46 // -->
+KEY_END = 35
+KEY_ENTER = 13
+KEY_ESCAPE = 27
+KEY_HOME = 36
+KEY_INSERT = 45
+KEY_PAGE_UP = 33
+KEY_PAGE_DOWN = 34
+KEY_TAB = 9
+control_key_codes = { // we react to these, but they aren't typing
+ '37': KEY_LEFT,
+ '38': KEY_UP,
+ '39': KEY_RIGHT,
+ '40': KEY_DOWN,
+ '35': KEY_END,
+ '8': KEY_BACKSPACE,
+ '46': KEY_DELETE,
+ '13': KEY_ENTER,
+ '27': KEY_ESCAPE,
+ '36': KEY_HOME,
+ '45': KEY_INSERT,
+ '33': KEY_PAGE_UP,
+ '34': KEY_PAGE_DOWN,
+ '9': KEY_TAB
+}
+
+function instantiate_tree (tree, parent) {
+ var c, i, k, remove, results, v
+ remove = []
+ for (i = 0; i < tree.length; ++i) {
+ c = tree[i]
+ switch (c.type) {
+ case 'text':
+ c.el = parent.ownerDocument.createTextNode(c.text)
+ parent.appendChild(c.el)
+ break
+ case 'tag':
+ if (c.name === 'script' || c.name === 'object' || c.name === 'iframe' || c.name === 'link') {
+ // TODO put placeholders instead
+ remove.unshift(i)
+ continue
+ }
+ // TODO create in correct namespace
+ c.el = parent.ownerDocument.createElement(c.name)
+ ref1 = c.attrs
+ for (k in ref1) {
+ v = ref1[k]
+ // FIXME if attr_whitelist[k]?
+ if (valid_attr_regex.test(k)) {
+ if (!js_attr_regex.test(k)) {
+ c.el.setAttribute(k, v)
+ }
+ }
+ }
+ parent.appendChild(c.el)
+ if (c.children.length) {
+ instantiate_tree(c.children, c.el)
+ }
+ }
+ }
+ results = []
+ for (i = 0; i < remove.length; i++) {
+ // FIXME this deletes the wrong node when siblings are removed
+ index = remove[i]
+ results.push(tree.splice(index, 1))
+ }
+ return results
+}
+
+function traverse_tree (tree, cb) {
+ var c, done, i
+ done = false
+ for (i = 0; i < tree.length; i++) {
+ c = tree[i]
+ done = cb(c)
+ if (done) {
+ return done
+ }
+ if (c.children.length) {
+ done = traverse_tree(c.children, cb)
+ if (done) {
+ return done
+ }
+ }
+ }
+ return done
+}
+
+function first_cursor_position (tree) {
+ var found
+ found = null
+ traverse_tree(tree, function(node, state) {
+ var cursor
+ if (node.type === 'text') {
+ cursor = new_cursor_position({n: node, i: 0})
+ if (cursor != null) {
+ found = cursor
+ return true // done traversing
+ }
+ }
+ return false // not done traversing
+ })
+ return found // maybe null
+}
+
+// this will fail when text has non-locatable cursor positions (eg collapsed whitespace)
+function find_next_cursor_position (tree, cursor) {
+ var found, new_cursor, state_before
+ if (cursor.n.type === 'text' && cursor.n.text.length > cursor.i) {
+ new_cursor = new_cursor_position({n: cursor.n, i: cursor.i + 1})
+ if (new_cursor != null) {
+ return new_cursor
+ }
+ }
+ state_before = true
+ found = null
+ traverse_tree(tree, function(node, state) {
+ if (node.type === 'text' && state_before === false) {
+ new_cursor = new_cursor_position({n: node, i: 0})
+ if (new_cursor != null) {
+ found = new_cursor
+ return true // done traversing
+ }
+ }
+ if (node === cursor.n) {
+ state_before = false
+ }
+ return false // not done traversing
+ })
+ if (found != null) {
+ return found
+ }
+ return null
+}
+
+function last_cursor_position (tree) {
+ var found
+ found = null
+ traverse_tree(tree, function(node) {
+ var cursor
+ if (node.type === 'text') {
+ cursor = new_cursor_position({n: node, i: node.text.length})
+ if (cursor != null) {
+ found = cursor
+ }
+ }
+ return false // not done traversing
+ })
+ return found // maybe null
+}
+
+// this will fail when text has non-locatable cursor positions (eg collapsed whitespace)
+function find_prev_cursor_position (tree, cursor) {
+ var found, found_prev, new_cursor
+ if (cursor.n.type === 'text' && cursor.i > 0) {
+ new_cursor = new_cursor_position({n: cursor.n, i: cursor.i - 1})
+ if (new_cursor != null) {
+ return new_cursor
+ }
+ }
+ found_prev = null
+ found = null
+ traverse_tree(tree, function(node) {
+ if (node === cursor.n) {
+ found = found_prev // maybe null
+ return true // done traversing
+ }
+ if (node.type === 'text') {
+ new_cursor = new_cursor_position({n: node, i: node.text.length})
+ if (new_cursor != null) {
+ found_prev = new_cursor
+ }
+ }
+ return false // not done traversing
+ })
+ return found // maybe null
+}
+
+function find_up_cursor_position (tree, cursor, ideal_x) {
+ var new_cursor, prev_cursor, target_y
+ new_cursor = cursor
+ // go prev until we're higher on y axis
+ while (new_cursor.y >= cursor.y) {
+ new_cursor = find_prev_cursor_position(tree, new_cursor)
+ if (new_cursor == null) {
+ return null
+ }
+ }
+ // done early if we're already left of old cursor position
+ if (new_cursor.x <= ideal_x) {
+ return new_cursor
+ }
+ target_y = new_cursor.y
+ // search leftward, until we find the closest position
+ // new_cursor is the prev-most position we've checked
+ // prev_cursor is the older value, so it's not as prev as new_cursor
+ while (new_cursor.x > ideal_x && new_cursor.y === target_y) {
+ prev_cursor = new_cursor
+ new_cursor = find_prev_cursor_position(tree, new_cursor)
+ if (new_cursor == null) {
+ break
+ }
+ }
+ // move cursor to prev_cursor or new_cursor
+ if (new_cursor != null) {
+ if (new_cursor.y === target_y) {
+ // both valid, and on the same line, use closest
+ if ((ideal_x - new_cursor.x) < (prev_cursor.x - ideal_x)) {
+ return new_cursor
+ } else {
+ return prev_cursor
+ }
+ } else {
+ // new_cursor on wrong line, use prev_cursor
+ return prev_cursor
+ }
+ } else {
+ // can't go any further prev, use prev_cursor
+ return prev_cursor
+ }
+}
+
+function find_down_cursor_position (tree, cursor, ideal_x) {
+ var new_cursor, prev_cursor, target_y
+ new_cursor = cursor
+ // go next until we move on the y axis
+ while (new_cursor.y <= cursor.y) {
+ new_cursor = find_next_cursor_position(tree, new_cursor)
+ if (new_cursor == null) {
+ return null
+ }
+ }
+ // done early if we're already right of old cursor position
+ if (new_cursor.x >= ideal_x) {
+ // this would be strange, but could happen due to runaround
+ return new_cursor
+ }
+ target_y = new_cursor.y
+ // search rightward, until we find the closest position
+ // new_cursor is the next-most position we've checked
+ // prev_cursor is the older value, so it's not as next as new_cursor
+ while (new_cursor.x < ideal_x && new_cursor.y === target_y) {
+ prev_cursor = new_cursor
+ new_cursor = find_next_cursor_position(tree, new_cursor)
+ if (new_cursor == null) {
+ break
+ }
+ }
+ if (new_cursor != null) {
+ if (new_cursor.y === target_y) {
+ // both valid, and on the same line, use closest
+ if ((new_cursor.x - ideal_x) < (ideal_x - prev_cursor.x)) {
+ return new_cursor
+ } else {
+ return prev_cursor
+ }
+ } else {
+ // new_cursor on wrong line, use prev_cursor
+ return prev_cursor
+ }
+ } else {
+ // can't go any further prev, use prev_cursor
+ return prev_cursor
+ }
+}
+
+function xy_to_cursor (tree, xy) {
+ var after, before, bounds, cur, guess_i, i, n, ret
+ for (i = 0; i < tree.length; i++) {
+ n = tree[i]
+ if (n.type === 'tag' || n.type === 'text') {
+ bounds = get_el_bounds(n.el)
+ if (xy.x < bounds.x) {
+ continue
+ }
+ if (xy.x > bounds.x + bounds.w) {
+ continue
+ }
+ if (xy.y < bounds.y) {
+ continue
+ }
+ if (xy.y > bounds.y + bounds.h) {
+ continue
+ }
+ if (n.children.length) {
+ ret = xy_to_cursor(n.children, xy)
+ if (ret != null) {
+ return ret
+ }
+ }
+ if (n.type === 'text') {
+ // click is within bounding box that contains all text.
+ if (n.text.length === 0) {
+ ret = new_cursor_position({n: n, i: 0})
+ if (ret != null) {
+ return ret
+ }
+ continue
+ }
+ before = new_cursor_position({n: n, i: 0})
+ if (before == null) {
+ continue
+ }
+ after = new_cursor_position({n: n, i: n.text.length})
+ if (after == null) {
+ continue
+ }
+ if (xy.y < before.y + before.h && xy.x < before.x) {
+ // console.log 'before first char on first line'
+ continue
+ }
+ if (xy.y > after.y && xy.x > after.x) {
+ // console.log 'after last char on last line'
+ continue
+ }
+ if (xy.y < before.y) {
+ console.log("Warning: click in text bounding box but above first line")
+ continue // above first line (runaround?)
+ }
+ if (xy.y > after.y + after.h) {
+ console.log("Warning: click in text bounding box but below last line", xy.y, after.y, after.h)
+ continue // below last line (shouldn't happen?)
+ }
+ while (after.i - before.i > 1) {
+ guess_i = Math.round((before.i + after.i) / 2)
+ cur = new_cursor_position({n: n, i: guess_i})
+ if (cur == null) {
+ console.log("error: failed to find cursor pixel location for", n, guess_i)
+ before = null
+ break
+ }
+ if (xy.y < cur.y || (xy.y <= cur.y + cur.h && xy.x < cur.x)) {
+ after = cur
+ } else {
+ before = cur
+ }
+ }
+ if (before == null) { // signals failure to find a cursor position
+ continue
+ }
+ // which one is closest?
+ if (Math.abs(before.x - xy.x) < Math.abs(after.x - xy.x)) {
+ return before
+ } else {
+ return after
+ }
+ }
+ }
+ }
+ return null
+}
+
+// browsers collapse these (html5 spec calls these "space characters")
+function is_space_code (char_code) {
+ switch (char_code) {
+ case 9:
+ case 10:
+ case 12:
+ case 13:
+ case 32:
+ return true
+ }
+ return false
+}
+function is_space (chr) {
+ return is_space_code(chr.charCodeAt(0))
+}
+
+function tree_remove_empty_text_nodes (tree) {
+ var c, empties, i, j, n
+ empties = []
+ traverse_tree(tree, function(n) {
+ if (n.type === 'text') {
+ if (n.text.length === 0) {
+ empties.unshift(n)
+ }
+ }
+ return false // not done traversing
+ })
+ for (i = 0; i < empties.length; i++) {
+ n = empties[i]
+ // don't completely empty the tree
+ if (tree.length === 1) {
+ if (tree[0].type === 'text') {
+ console.log("oop, leaving a blank node because it's the only thing")
+ return
+ }
+ }
+ n.el.parentNode.removeChild(n.el)
+ ref = n.parent.children
+ for (j = 0; j < ref.length; ++j) {
+ c = ref[j]
+ if (c === n) {
+ n.parent.children.splice(j, 1)
+ break
+ }
+ }
+ }
+}
+
+function PeachHTML5Editor (in_el, options) {
+ // Options: (all optional)
+ // editor_id: "id" attribute for outer-most element created by/for editor
+ // css_file: filename of a css file to style editable content
+ // on_init: callback for when the editable content is in place
+ var css, opt_fragment, outer_bounds, outer_iframe_style, outer_wrap
+ this.options = options != null ? options : {}
+ this.in_el = in_el
+ this.tree = null // array of Nodes, all editable content
+ this.tree_parent = null // this.tree is this.children. .el might === this.idoc.body
+ this.matting = []
+ this.init_1_called = false // when iframes have loaded
+ this.outer_iframe // iframe to hold editor
+ this.outer_idoc // "document" object for this.outer_iframe
+ this.wrap2 = null // scrollbar is on this
+ this.wrap2_offset = null
+ this.wrap2_height = null // including padding
+ this.iframe = null // iframe to hold editable content
+ this.idoc = null // "document" object for this.iframe
+ this.cursor = null
+ this.cursor_el = null
+ this.cursor_visible = false
+ this.cursor_ideal_x = null
+ this.poll_for_blur_timeout = null
+ opt_fragment = this.options.fragment != null ? this.options.fragment : true
+ this.parser_opts = {}
+ if (opt_fragment) {
+ this.parser_opts.fragment = 'body'
+ }
+ this.outer_iframe = domify(document, {iframe: {}})
+ outer_iframe_style = 'border: none !important; margin: 0 !important; padding: 0 !important; height: 100% !important; width: 100% !important;'
+ if (this.options.editor_id != null) {
+ this.outer_iframe.setAttribute('id', this.options.editor_id)
+ }
+ this.outer_iframe.onload = (function(_this) {
+ return function() {
+ var icss
+ _this.outer_idoc = _this.outer_iframe.contentDocument
+ icss = domify(_this.outer_idoc, { style: { children: [
+ domify(_this.outer_idoc, {text: css})
+ ]}})
+ _this.outer_idoc.head.appendChild(icss)
+ _this.iframe = domify(_this.outer_idoc, {iframe: {sandbox: 'allow-same-origin allow-scripts'}})
+ _this.iframe.onload = function() {
+ return _this.init_1()
+ }
+ timeout(200, function() { // firefox never fires this onload
+ if (!_this.init_1_called) {
+ return _this.init_1()
+ }
+ })
+ _this.outer_idoc.body.appendChild(
+ domify(_this.outer_idoc, {div: {id: 'wrap1', children: [
+ domify(_this.outer_idoc, {div: {
+ style: "position: absolute; top: 0; left: 1px; font-size: 10px",
+ children: [domify(_this.outer_idoc, {text: "Peach HTML5 Editor"})]
+ }}),
+ _this.wrap2 = domify(_this.outer_idoc, {div: {id: 'wrap2', children: [
+ domify(_this.outer_idoc, {div: {id: 'wrap3', children: [
+ _this.iframe,
+ _this.overlay = domify(_this.outer_idoc, { div: { id: 'overlay' }})
+ ]}})
+ ]}})
+ ]}})
+ )
+ }
+ })(this)
+ outer_wrap = domify(document, {div: {"class": 'peach_html5_editor' }})
+ this.in_el.parentNode.appendChild(outer_wrap)
+ outer_bounds = get_el_bounds(outer_wrap)
+ if (outer_bounds.w < 300) {
+ outer_bounds.w = 300
+ }
+ if (outer_bounds.h < 300) {
+ outer_bounds.h = 300
+ }
+ outer_iframe_style += "width: " + outer_bounds.w + "px; height: " + outer_bounds.h + "px;"
+ this.outer_iframe.setAttribute('style', outer_iframe_style)
+ css = this.generate_outer_css({w: outer_bounds.w, h: outer_bounds.h})
+ outer_wrap.appendChild(this.outer_iframe)
+}
+PeachHTML5Editor.prototype.init_1 = function() { // this.iframe has loaded (but not it's css)
+ var istyle
+ this.idoc = this.iframe.contentDocument
+ this.init_1_called = true
+ // chromium doesn't resolve relative urls as though they were at the same domain
+ // so add a <base> tag
+ this.idoc.head.appendChild(domify(this.idoc, {base: {href: this_url_sans_path()}}))
+ // don't let @iframe have scrollbars
+ this.idoc.head.appendChild(domify(this.idoc, {style: {children: [
+ domify(this.idoc, {text: "body { overflow: hidden; }"})
+ ]}}))
+ if (this.options.css_file) {
+ istyle = domify(this.idoc, {link: {rel: 'stylesheet', href: this.options.css_file}})
+ istyle.onload = (function(_this) {
+ return function() {
+ return _this.init_2()
+ }
+ })(this)
+ this.idoc.head.appendChild(istyle)
+ } else {
+ this.init_2()
+ }
+}
+PeachHTML5Editor.prototype.init_2 = function() { // this.iframe and it's css file(s) are ready
+ this.overlay.onclick = (function(_this) {
+ return function(e) {
+ _this.have_focus()
+ return event_return(e, _this.onclick(e))
+ }
+ })(this)
+ this.overlay.ondoubleclick = (function(_this) {
+ return function(e) {
+ _this.have_focus()
+ return event_return(e, _this.ondoubleclick(e))
+ }
+ })(this)
+ this.outer_idoc.body.onkeyup = (function(_this) {
+ return function(e) {
+ _this.have_focus()
+ return event_return(e, _this.onkeyup(e))
+ }
+ })(this)
+ this.outer_idoc.body.onkeydown = (function(_this) {
+ return function(e) {
+ _this.have_focus()
+ return event_return(e, _this.onkeydown(e))
+ }
+ })(this)
+ this.outer_idoc.body.onkeypress = (function(_this) {
+ return function(e) {
+ _this.have_focus()
+ return event_return(e, _this.onkeypress(e))
+ }
+ })(this)
+ this.load_html(this.in_el.value)
+ if (this.options.on_init != null) {
+ return this.options.on_init()
+ }
+}
+PeachHTML5Editor.prototype.generate_outer_css = function(args) {
+ var frame_width, h, inner_padding, occupy, ret, w
+ w = args.w != null ? args.w : 300
+ h = args.h != null ? args.h : 300
+ inner_padding = args.inner_padding != null ? args.inner_padding : overlay_padding
+ frame_width = args.frame_width != null ? args.frame_width : inner_padding
+ occupy = function(left, top, right, bottom) {
+ if (top == null) {
+ top = left
+ }
+ if (right == null) {
+ right = left
+ }
+ if (bottom == null) {
+ bottom = top
+ }
+ w -= left + right
+ h -= top + bottom
+ return Math.max(left, top, right, bottom)
+ }
+ ret = ''
+ ret += 'body {'
+ ret += 'margin: 0;'
+ ret += 'padding: 0;'
+ ret += 'color: black;'
+ ret += 'background: white;'
+ ret += '}'
+ ret += '#wrap1 {'
+ ret += "border: " + (occupy(1)) + "px solid black;"
+ ret += "padding: " + (occupy(frame_width)) + "px;"
+ ret += '}'
+ ret += '#wrap2 {'
+ ret += "border: " + (occupy(1)) + "px solid black;"
+ this.wrap2_height = h // including padding because padding scrolls
+ ret += "padding: " + (occupy(inner_padding)) + "px;"
+ ret += "padding-right: " + (inner_padding + occupy(0, 0, 15, 0)) + "px;"
+ ret += "width: " + w + "px;"
+ ret += "height: " + h + "px;"
+ ret += 'overflow-x: hidden;'
+ ret += 'overflow-y: scroll;'
+ ret += '}'
+ ret += '#wrap3 {'
+ ret += 'position: relative;'
+ ret += "width: " + w + "px;"
+ ret += "min-height: " + h + "px;"
+ ret += '}'
+ ret += 'iframe {'
+ ret += 'box-sizing: border-box;'
+ ret += 'margin: 0;'
+ ret += 'border: none;'
+ ret += 'padding: 0;'
+ ret += "width: " + w + "px;"
+ //ret += "height: " + h + "px;" // height auto-set when content set/changed
+ ret += '-ms-user-select: none;'
+ ret += '-webkit-user-select: none;'
+ ret += '-moz-user-select: none;'
+ ret += 'user-select: none;'
+ ret += '}'
+ ret += '#overlay {'
+ ret += 'position: absolute;'
+ ret += "left: -" + inner_padding + "px;"
+ ret += "top: -" + inner_padding + "px;"
+ ret += "right: -" + inner_padding + "px;"
+ ret += "bottom: -" + inner_padding + "px;"
+ ret += 'overflow: hidden;'
+ ret += '}'
+ ret += '.lightbox {'
+ ret += 'position: absolute;'
+ ret += 'background: rgba(100,100,100,0.2);'
+ ret += '}'
+ ret += '#cursor {'
+ ret += 'position: absolute;'
+ ret += 'width: 2px;'
+ ret += 'background: linear-gradient(0deg, rgba(0,0,0,1), rgba(255,255,255,1), rgba(0,0,0,1), rgba(255,255,255,1), rgba(0,0,0,1), rgba(255,255,255,1), rgba(0,0,0,1), rgba(255,255,255,1), rgba(0,0,0,1));'
+ ret += 'background-size: 200% 200%;'
+ ret += '-webkit-animation: blink 1s linear normal infinite;'
+ ret += 'animation: blink 1s linear normal infinite;'
+ ret += '}'
+ ret += '@-webkit-keyframes blink {'
+ ret += '0%{background-position:0% 0%}'
+ ret += '100%{background-position:0% -100%}'
+ ret += '}'
+ ret += '@keyframes blink { '
+ ret += '0%{background-position:0% 0%}'
+ ret += '100%{background-position:0% -100%}'
+ ret += '}'
+ ret += '.ann_box {'
+ ret += 'z-index: 5;'
+ ret += 'position: absolute;'
+ ret += 'border: 1px solid rgba(0,0,0,0.1);'
+ ret += 'outline: 1px solid rgba(255,255,255,0.1);' // in case there's a black background
+ ret += '}'
+ ret += '.ann_tag {'
+ ret += 'z-index: 10;'
+ ret += 'position: absolute;'
+ ret += 'font-size: 8px;'
+ ret += 'white-space: pre;'
+ ret += 'background: rgba(255,255,255,0.4);'
+ ret += '-ms-user-select: none;'
+ ret += '-webkit-user-select: none;'
+ ret += '-moz-user-select: none;'
+ ret += 'user-select: none;'
+ ret += '}'
+ return ret
+}
+PeachHTML5Editor.prototype.overlay_event_to_inner_xy = function(e) {
+ var x, y
+ if (this.wrap2_offset == null) {
+ this.wrap2_offset = get_el_bounds(this.wrap2)
+ }
+ x = e.pageX - overlay_padding
+ y = e.pageY - overlay_padding + this.wrap2.scrollTop
+ return {
+ x: x - this.wrap2_offset.x,
+ y: y - this.wrap2_offset.y
+ }
+}
+PeachHTML5Editor.prototype.onclick = function(e) {
+ var new_cursor, xy
+ xy = this.overlay_event_to_inner_xy(e)
+ new_cursor = xy_to_cursor(this.tree, xy)
+ if (new_cursor != null) {
+ this.move_cursor(new_cursor)
+ } else {
+ this.kill_cursor()
+ }
+ return false
+}
+PeachHTML5Editor.prototype.ondoubleclick = function(e) {
+ return false
+}
+PeachHTML5Editor.prototype.onkeyup = function(e) {
+ if (e.ctrlKey) {
+ return
+ }
+ if (ignore_key_codes[e.keyCode] != null) {
+ return false
+ }
+ //return false if control_key_codes[e.keyCode] != null
+}
+PeachHTML5Editor.prototype.onkeydown = function(e) {
+ var new_cursor, saved_ideal_x
+ if (e.ctrlKey) {
+ return
+ }
+ if (ignore_key_codes[e.keyCode] != null) {
+ return false
+ }
+ //return false if control_key_codes[e.keyCode] != null
+ switch (e.keyCode) {
+ case KEY_LEFT:
+ if (this.cursor != null) {
+ new_cursor = find_prev_cursor_position(this.tree, this.cursor)
+ } else {
+ new_cursor = first_cursor_position(this.tree)
+ }
+ if (new_cursor != null) {
+ this.move_cursor(new_cursor)
+ }
+ return false
+ case KEY_RIGHT:
+ if (this.cursor != null) {
+ new_cursor = find_next_cursor_position(this.tree, this.cursor)
+ } else {
+ new_cursor = last_cursor_position(this.tree)
+ }
+ if (new_cursor != null) {
+ this.move_cursor(new_cursor)
+ }
+ return false
+ case KEY_UP:
+ if (this.cursor != null) {
+ new_cursor = find_up_cursor_position(this.tree, this.cursor, this.cursor_ideal_x)
+ if (new_cursor != null) {
+ saved_ideal_x = this.cursor_ideal_x
+ this.move_cursor(new_cursor)
+ this.cursor_ideal_x = saved_ideal_x
+ }
+ } else {
+ // move cursor to first position in document
+ new_cursor = first_cursor_position(this.tree)
+ if (new_cursor != null) {
+ this.move_cursor(new_cursor)
+ }
+ }
+ return false
+ case KEY_DOWN:
+ if (this.cursor != null) {
+ new_cursor = find_down_cursor_position(this.tree, this.cursor, this.cursor_ideal_x)
+ if (new_cursor != null) {
+ saved_ideal_x = this.cursor_ideal_x
+ this.move_cursor(new_cursor)
+ this.cursor_ideal_x = saved_ideal_x
+ }
+ } else {
+ // move cursor to first position in document
+ new_cursor = last_cursor_position(this.tree)
+ if (new_cursor != null) {
+ this.move_cursor(new_cursor)
+ }
+ }
+ return false
+ case KEY_END:
+ new_cursor = last_cursor_position(this.tree)
+ if (new_cursor != null) {
+ this.move_cursor(new_cursor)
+ }
+ return false
+ case KEY_BACKSPACE:
+ this.on_key_backspace(e)
+ return false
+ case KEY_DELETE:
+ if (this.cursor == null) {
+ return false
+ }
+ new_cursor = find_next_cursor_position(this.tree, {n: this.cursor.n, i: this.cursor.i})
+ // try moving cursor right and then running backspace code
+ // TODO replace this hack with a real implementation
+ if (new_cursor != null) {
+ // try to detect common case where cursor goes inside an block,
+ // but doesn't pass a character (and advance one more in that case)
+ if (new_cursor.n !== this.cursor.n && new_cursor.i === 0) {
+ if (new_cursor.n.type === 'text' && new_cursor.n.text.length > 0) {
+ if (new_cursor.n.parent != null) {
+ if (!this.is_display_block(new_cursor.n.parent)) {
+ // FIXME should test run sibling
+ new_cursor = new_cursor_position({n: new_cursor.n, i: new_cursor.i + 1})
+ }
+ }
+ }
+ }
+ }
+ if (new_cursor != null) {
+ if (new_cursor.n !== this.cursor.n || new_cursor.i !== this.cursor.i) {
+ this.move_cursor(new_cursor)
+ this.on_key_backspace(e)
+ }
+ }
+ return false
+ case KEY_ENTER:
+ this.on_key_enter(e)
+ return false
+ case KEY_ESCAPE:
+ this.kill_cursor()
+ return false
+ case KEY_HOME:
+ new_cursor = first_cursor_position(this.tree)
+ if (new_cursor != null) {
+ this.move_cursor(new_cursor)
+ }
+ return false
+ case KEY_INSERT:
+ return false
+ case KEY_PAGE_UP:
+ this.on_page_up_key(e)
+ return false
+ case KEY_PAGE_DOWN:
+ this.on_page_down_key(e)
+ return false
+ case KEY_TAB:
+ return false
+ }
+}
+PeachHTML5Editor.prototype.onkeypress = function(e) {
+ var char, new_cursor
+ if (e.ctrlKey) {
+ return
+ }
+ if (ignore_key_codes[e.keyCode] != null) {
+ return false
+ }
+ char = e.charCode != null ? e.charCode : e.keyCode
+ if (char && (this.cursor != null)) {
+ char = String.fromCharCode(char)
+ this.insert_character(this.cursor.n, this.cursor.i, char)
+ this.text_cleanup(this.cursor.n)
+ this.changed()
+ new_cursor = new_cursor_position({n: this.cursor.n, i: this.cursor.i + 1})
+ if (new_cursor) {
+ this.move_cursor(new_cursor)
+ } else {
+ console.log("ERROR: couldn't find cursor position after insert")
+ this.kill_cursor()
+ }
+ }
+ return false
+}
+PeachHTML5Editor.prototype.on_key_enter = function(e) { // enter key pressed
+ var before, cur_block, i, n, new_cursor, new_node, new_text, parent_el, pc
+ if (!this.cursor_visible) {
+ return
+ }
+ cur_block = this.cursor.n
+ while (true) {
+ if (cur_block.type === 'tag') {
+ if (is_display_block(cur_block.el)) {
+ break
+ }
+ }
+ if (cur_block.parent == null) {
+ return
+ }
+ cur_block = cur_block.parent
+ }
+ // find array to insert new element into
+ if (cur_block.parent === this.tree_parent) {
+ parent_el = this.idoc.body
+ pc = this.tree
+ } else {
+ parent_el = cur_block.parent.el
+ pc = cur_block.parent.children
+ }
+ for (i = 0; i < pc.length; ++i) {
+ n = pc[i]
+ if (n === cur_block) {
+ break
+ }
+ }
+ i += 1 // we want to be after it
+ if (i < pc.length) {
+ before = pc[i].el
+ } else {
+ before = null
+ }
+ // TODO if content after cursor
+ // TODO new block is empty
+ new_text = new peach_parser.Node('text', {text: ' '})
+ new_node = new peach_parser.Node('tag', {
+ name: 'p',
+ parent: cur_block.parent,
+ attrs: {style: 'white-space: pre-wrap'},
+ children: [new_text]
+ })
+ new_text.parent = new_node
+ new_text.el = domify(this.idoc, {text: ' '})
+ new_node.el = domify(this.idoc, {p: {style: 'white-space: pre-wrap', children: [new_text.el]}})
+ pc.splice(i, 0, new_node)
+ parent_el.insertBefore(new_node.el, before)
+ this.changed()
+ new_cursor = new_cursor_position({
+ n: new_text,
+ i: 0
+ })
+ if (new_cursor == null) {
+ throw 'bork bork'
+ }
+ this.move_cursor(new_cursor)
+ // TODO move content past cursor into this new block
+ return false
+}
+// unlike the global function, this takes a Node, not an element
+PeachHTML5Editor.prototype.is_display_block = function(n) {
+ // TODO stop calling global function, merge it into here, use iframe's window object
+ if (n.type !== 'tag') {
+ return false
+ }
+ return is_display_block(n.el)
+}
+PeachHTML5Editor.prototype.find_block_parent = function(n) {
+ while (true) {
+ n = n.parent
+ if (n == null) {
+ return null
+ }
+ if (this.is_display_block(n)) {
+ return n
+ }
+ if (n === this.tree_parent) {
+ return n
+ }
+ }
+ return null
+}
+// return a flat array of nodes (text, <br>, and later also inline-block)
+// that are flowing/wrapping together. n can be the containing block, or any
+// element inside it.
+PeachHTML5Editor.prototype.get_text_run = function(n) {
+ var block, ret
+ ret = []
+ if (this.is_display_block(n)) {
+ block = n
+ } else {
+ block = this.find_block_parent(n)
+ if (block == null) {
+ return ret
+ }
+ }
+ traverse_tree(block.children, (function(_this) { return function(n) {
+ var disp
+ if (n.type === 'text') {
+ ret.push(n)
+ } else if (n.type === 'tag') {
+ if (n.name === 'br') {
+ ret.push(n)
+ } else {
+ disp = _this.computed_style(n)
+ if (disp === 'inline-block') {
+ ret.push(n)
+ }
+ }
+ }
+ return false // not done traversing
+ }})(this))
+ return ret
+}
+PeachHTML5Editor.prototype.node_is_decendant = function(young, old) {
+ while (young != null && young !== this.tree_parent) {
+ if (young === old) {
+ return true
+ }
+ young = young.parent
+ }
+ return false
+}
+// helper for on_key_backspace
+PeachHTML5Editor.prototype._merge_left = function(state) {
+ var pi, prev
+ // the node prev to n was not prev to it a moment ago, merge with it if reasonable
+ pi = state.n.parent.children.indexOf(state.n)
+ if (pi > 0) {
+ prev = state.n.parent.children[pi - 1]
+ if (prev.type === 'text') {
+ state.i = prev.text.length
+ prev.text = prev.el.textContent = prev.text + state.n.text
+ this.remove_node(state.n)
+ state.n = prev
+ state.changed = true
+ state.moved_cursor = true
+ }
+ }
+ // else // TODO merge possible consecutive matching inline tags at @cursor
+ return state
+}
+// helper for on_key_backspace
+// remove n from the dom, also remove its inline parents that are emptied by removing n
+PeachHTML5Editor.prototype._backspace_node_helper = function(n, run, run_i) {
+ var block
+ if (run == null) {
+ run = this.get_text_run(n)
+ }
+ if (run_i == null) {
+ run_i = run.indexOf(n)
+ }
+ block = this.find_block_parent(n)
+ this.remove_node(n)
+ n = n.parent
+ while (n != null && n !== block) {
+ // bail if the previous node in this run is also inside the same parent
+ if (run_i > 0) {
+ if (this.node_is_decendant(run[run_i - 1], n)) {
+ break
+ }
+ }
+ // bail if the next node in this run is also inside the same parent
+ if (run_i + 1 < run.length) {
+ if (this.node_is_decendant(run[run_i + 1], n)) {
+ break
+ }
+ }
+ // move any sibling nodes to parent. These nodes are not in the text run
+ while (n.children.length > 0) {
+ this.move_node(n.children[0], n.parent, n)
+ }
+ // remove (now completely empty) inline parent
+ this.remove_node(n)
+ // proceed to outer parent
+ n = n.parent
+ }
+}
+PeachHTML5Editor.prototype.on_key_backspace = function(e) {
+ var block, changed, merge_state, n, ncb, need_text_cleanup, new_cursor, pcb, post, pre, prev, prev_cursor, run, run_i
+ if (this.cursor == null) {
+ return
+ }
+ new_cursor = null
+ run = null
+ changed = true
+ if (this.cursor.i === 0) { // cursor is at start of text node
+ if (run == null) {
+ run = this.get_text_run(this.cursor.n)
+ }
+ run_i = run.indexOf(this.cursor.n)
+ if (run_i === 0) { // if at start of text run
+ block = this.find_block_parent(this.cursor.n)
+ prev_cursor = find_prev_cursor_position(this.tree, {n: this.cursor.n, i: 0})
+ if (prev_cursor === null) { // if in first text run of document
+ // do nothing (there's nothing text-like to the left of the cursor)
+ return
+ }
+ // else merge with prev/outer text run
+ pcb = this.find_block_parent(prev_cursor.n)
+ while (block.children.length > 0) {
+ this.move_node(block.children[0], pcb)
+ }
+ this.remove_node(block)
+ // merge possible consecutive text nodes at @cursor
+ merge_state = {n: this.cursor.n}
+ this._merge_left(merge_state)
+ this.text_cleanup(merge_state.n)
+ new_cursor = new_cursor_position({n: merge_state.n, i: merge_state.i})
+ } else { // at start of text node, but not start of text run
+ prev = run[run_i - 1]
+ if (prev.type === 'text') { // if previous in text run is text
+ if (prev.text.length === 1) { // if emptying prev (in text run)
+ this._backspace_node_helper(prev, run, run_i)
+ merge_state = {n: this.cursor.n, i: this.cursor.i}
+ this._merge_left(merge_state)
+ this.text_cleanup(merge_state.n)
+ new_cursor = new_cursor_position({n: merge_state.n, i: merge_state.i})
+ } else { // prev in run is text with muliple chars
+ // delete last character in prev
+ prev.text = prev.text.substr(0, prev.text.length - 1)
+ prev.el.textContent = prev.text
+ this.text_cleanup(this.cursor.n)
+ new_cursor = new_cursor_position({n: this.cursor.n, i: this.cursor.i})
+ }
+ } else if (prev.name === 'br' || prev.name === 'hr') {
+ this._backspace_node_helper(prev, run, run_i)
+ merge_state = {n: this.cursor.n, i: this.cursor.i}
+ this._merge_left(merge_state)
+ this.text_cleanup(merge_state.n)
+ new_cursor = new_cursor_position({n: merge_state.n, i: merge_state.i})
+ }
+ // FIXME implement this:
+ // else // if prev (in run) is inline-block
+ // if that inline-block has text in it
+ // delete last char in prev inlineblock
+ // if that empties it
+ // delete it
+ // merge left
+ // else
+ // move cursor inside
+ // else
+ // delete prev (inline) block
+ // merge left
+ // auto-delete this @cursor.parent(s) if this empties them
+ }
+ } else { // cursor is not at start of text node
+ if (run == null) {
+ run = this.get_text_run(this.cursor.n)
+ }
+ if (this.cursor.n.text.length === 1) { // if emptying text node
+ if (run.length === 1) { // if emptying text run (of text/br/hr/inline-block)
+ // remove inline-parents of @cursor.n
+ block = this.find_block_parent(this.cursor.n)
+ changed = false
+ n = this.cursor.n.parent
+ // note: this doesn't use _backspace_node_helper because:
+ // 1. we don't want to delete the target node (we're replacing it's contents)
+ // 2. we want to track whether anything was removed
+ // 3. we know already know there's no other text from this run anywhere
+ while (n && n !== block) {
+ changed = true
+ while (n.children.length > 0) {
+ this.move_node(n.children[0], n.parent, n)
+ }
+ this.remove_node(n)
+ n = n.parent
+ }
+ // replace @cursor.n with a single (preserved) space
+ if (this.cursor.n.text !== ' ') {
+ changed = true
+ this.cursor.n.text = this.cursor.n.el.textContent = ' '
+ }
+ if (changed) {
+ this.text_cleanup(this.cursor.n)
+ }
+ // place the cursor to the left of that space
+ new_cursor = new_cursor_position({n: this.cursor.n, i: 0})
+ } else { // emptying a text node (but not a whole text run)
+ // figure out where cursor should land
+ block = this.find_block_parent(this.cursor.n)
+ new_cursor = find_prev_cursor_position(this.tree, {n: this.cursor.n, i: 0})
+ ncb = this.find_block_parent(new_cursor.n)
+ if (ncb !== block) {
+ new_cursor = find_next_cursor_position(this.tree, {n: this.cursor.n, i: 1})
+ }
+ // delete text node and cleanup emptied parents
+ run_i = run.indexOf(this.cursor.n)
+ this._backspace_node_helper(this.cursor.n, run, run_i)
+ // see if new adjacent siblings should merge
+ // TODO make smarter
+ if (run_i > 0 && run_i + 1 < run.length) {
+ if (run[run_i - 1].type === 'text' && run[run_i + 1].type === 'text') {
+ merge_state = {n: run[run_i + 1]}
+ this._merge_left(merge_state)
+ if (merge_state.moved_cursor) {
+ new_cursor = merge_state
+ }
+ }
+ }
+ // update whitespace preservation
+ this.text_cleanup(block)
+ // update cursor x/y in case things moved around
+ if (new_cursor != null) {
+ if (new_cursor.n.el.parentNode) { // still in dom after cleanup
+ new_cursor = new_cursor_position({n: new_cursor.n, i: new_cursor.i})
+ } else {
+ new_cursor = null
+ }
+ }
+ }
+ } else { // there's a char left of cursor that we can delete without emptying anything
+ // delete character
+ need_text_cleanup = true
+ if (this.cursor.i > 1 && this.cursor.i < this.cursor.n.text.length) {
+ pre = this.cursor.n.text.substr(this.cursor.i - 2, 3)
+ post = pre.charAt(0) + pre.charAt(2)
+ if (str_has_ws_run(pre) === str_has_ws_run(post)) {
+ need_text_cleanup = false
+ }
+ }
+ this.remove_character(this.cursor.n, this.cursor.i - 1)
+ // call text_cleanup if whe created/removed a whitespace run
+ if (need_text_cleanup) {
+ this.text_cleanup(this.cursor.n)
+ }
+ new_cursor = new_cursor_position({n: this.cursor.n, i: this.cursor.i - 1})
+ }
+ }
+ // mark document changed and move the cursor
+ if (changed != null) {
+ this.changed()
+ }
+ if (new_cursor != null) {
+ this.move_cursor(new_cursor)
+ } else {
+ this.kill_cursor()
+ }
+}
+PeachHTML5Editor.prototype.on_page_up_key = function(e) {
+ var new_cursor, screen_y, scroll_amount
+ if (this.wrap2.scrollTop === 0) {
+ if (this.cursor == null) {
+ return
+ }
+ new_cursor = first_cursor_position(this.tree)
+ if (new_cursor != null) {
+ if (new_cursor.n !== this.cursor.n || new_cursor.i !== this.cursor.i) {
+ this.move_cursor(new_cursor)
+ }
+ }
+ return
+ }
+ if (this.cursor != null) {
+ screen_y = this.cursor.y - this.wrap2.scrollTop
+ }
+ scroll_amount = this.wrap2_height - breathing_room
+ this.wrap2.scrollTop = Math.max(0, this.wrap2.scrollTop - scroll_amount)
+ if (this.cursor != null) {
+ return this.move_cursor_into_view(screen_y + this.wrap2.scrollTop)
+ }
+}
+PeachHTML5Editor.prototype.on_page_down_key = function(e) {
+ var lowest_scrollpos, new_cursor, screen_y, scroll_amount
+ lowest_scrollpos = this.wrap2.scrollHeight - this.wrap2_height
+ if (this.wrap2.scrollTop === lowest_scrollpos) {
+ if (this.cursor == null) {
+ return
+ }
+ new_cursor = last_cursor_position(this.tree)
+ if (new_cursor != null) {
+ if (new_cursor.n !== this.cursor.n || new_cursor.i !== this.cursor.i) {
+ this.move_cursor(new_cursor)
+ }
+ }
+ return
+ }
+ if (this.cursor != null) {
+ screen_y = this.cursor.y - this.wrap2.scrollTop
+ }
+ scroll_amount = this.wrap2_height - breathing_room
+ this.wrap2.scrollTop = Math.min(lowest_scrollpos, this.wrap2.scrollTop + scroll_amount)
+ if (this.cursor != null) {
+ this.move_cursor_into_view(screen_y + this.wrap2.scrollTop)
+ }
+}
+PeachHTML5Editor.prototype.move_cursor_into_view = function(y_target) {
+ var cur, far_enough, finder, new_cursor, saved_ideal_x, was, y_max, y_min
+ if (y_target === this.cursor.y) {
+ return
+ }
+ was = this.cursor
+ y_min = this.wrap2.scrollTop
+ if (this.wrap2.scrollTop !== 0) {
+ y_min += breathing_room
+ }
+ y_max = this.wrap2.scrollTop + this.wrap2_height
+ if (this.wrap2.scrollTop !== this.wrap2.scrollHeight - this.wrap2_height) { // downmost
+ y_max -= breathing_room
+ }
+ y_target = Math.min(y_target, y_max)
+ y_target = Math.max(y_target, y_min)
+ if (y_target < this.cursor.y) {
+ finder = find_up_cursor_position
+ far_enough = function(cur, target_y) {
+ return cur.y + cur.h <= target_y
+ }
+ } else {
+ finder = find_down_cursor_position
+ far_enough = function(cur, y_target) {
+ return cur.y >= y_target
+ }
+ }
+ while (true) {
+ cur = finder(this.tree, was, this.cursor_ideal_x)
+ if (cur == null) {
+ break
+ }
+ if (far_enough(cur, y_target)) {
+ break
+ }
+ was = cur
+ }
+ if (was === this.cursor) {
+ was = null
+ }
+ if (was != null) {
+ if (was.y + was.h > y_max) {
+ was = null
+ } else if (was.y < y_min) {
+ was = null
+ }
+ }
+ if (cur != null) {
+ if (cur.y + cur.h > y_max) {
+ cur = null
+ } else if (cur.y < y_min) {
+ cur = null
+ }
+ }
+ if ((cur != null) && (was != null)) {
+ // both valid, pick best
+ if (cur.y < y_min) {
+ new_cursor = was
+ } else if (was.y + was.h > y_max) {
+ new_cursor = cur
+ } else if (cur.y - y_target < y_target - was.y) {
+ new_cursor = cur
+ } else {
+ new_cursor = was
+ }
+ } else {
+ new_cursor = was != null ? was : cur
+ }
+ if (new_cursor != null) {
+ saved_ideal_x = this.cursor_ideal_x
+ this.move_cursor(new_cursor)
+ this.cursor_ideal_x = saved_ideal_x
+ }
+}
+// remove all the editable content (and cursor, overlays, etc)
+PeachHTML5Editor.prototype.clear_dom = function() {
+ while (this.idoc.body.childNodes.length) {
+ this.idoc.body.removeChild(this.idoc.body.childNodes[0])
+ }
+ this.kill_cursor()
+}
+PeachHTML5Editor.prototype.load_html = function(html) {
+ this.tree = peach_parser(html, this.parser_opts)
+ if (this.tree[0] == null ? true : this.tree[0].parent == null) {
+ this.tree = peach_parser('<p style="white-space: pre-wrap"> </p>', this.parser_opts)
+ }
+ this.tree_parent = this.tree[0].parent
+ this.tree_parent.el = this.idoc.body
+ this.clear_dom()
+ instantiate_tree(this.tree, this.tree_parent.el)
+ this.collapse_whitespace(this.tree)
+ return this.changed()
+}
+PeachHTML5Editor.prototype.changed = function() {
+ this.in_el.onchange = null
+ this.in_el.value = this.pretty_html(this.tree)
+ this.in_el.onchange = (function(_this) { return function() {
+ return _this.load_html(_this.in_el.value)
+ }})(this)
+ return this.adjust_iframe_height()
+}
+PeachHTML5Editor.prototype.adjust_iframe_height = function() {
+ var h, s
+ s = this.wrap2.scrollTop
+ // when the content gets shorter, the idoc's body tag will continue to
+ // report the old (too big) height in Chrome. The workaround is to
+ // shrink the iframe before the content height:
+ this.iframe.style.height = "10px"
+ h = parseInt(this.idoc.body.scrollHeight, 10)
+ this.iframe.style.height = h + "px"
+ return this.wrap2.scrollTop = s
+}
+// true if n is text node with only one caracter, and the only child of a tag
+PeachHTML5Editor.prototype.is_only_char_in_tag = function(n, i) {
+ if (n.type !== 'text') {
+ return false
+ }
+ if (n.text.length !== 1) {
+ return false
+ }
+ if (n.parent === this.tree_parent) {
+ return false
+ }
+ if (n.parent.children.length !== 1) {
+ return false
+ }
+ return true
+}
+// true if n is text node with just a space in it, and the only child of a tag
+PeachHTML5Editor.prototype.is_lone_space = function(n, i) {
+ if (n.type !== 'text') {
+ return false
+ }
+ if (n.text !== ' ') {
+ return false
+ }
+ if (n.parent === this.tree_parent) {
+ return false
+ }
+ if (n.parent.children.length !== 1) {
+ return false
+ }
+ return true
+}
+// detect special case: typing before a space that's the only thing in a block/doc
+// reason: enter key creates blocks with just a space in them
+PeachHTML5Editor.prototype.insert_should_replace = function(n, i) {
+ if (i !== 0) {
+ return false
+ }
+ if (n.text !== ' ') {
+ return false
+ }
+ if (n.parent === this.tree_parent) {
+ return true
+ }
+ if (n.parent.children.length === 1) {
+ if (n.parent.children[0] === n) {
+ // n is only child
+ return true
+ }
+ }
+ return false
+}
+// WARNING: after calling this, you MUST call changed() and text_cleanup()
+PeachHTML5Editor.prototype.insert_character = function(n, i, char) {
+ if (n.parent === this.tree_parent) {
+ // FIXME implement text nodes at top level
+ return
+ }
+ // insert the character
+ if (this.insert_should_replace(n, i)) {
+ n.text = char
+ } else if (i === 0) {
+ n.text = char + n.text
+ } else if (i === n.text.length) {
+ n.text += char
+ } else {
+ n.text = n.text.substr(0, i) + char + n.text.substr(i)
+ }
+ return n.el.nodeValue = n.text
+}
+// WARNING: after calling this, you MUST call changed() and text_cleanup()
+PeachHTML5Editor.prototype.remove_character = function(n, i) {
+ n.text = n.text.substr(0, i) + n.text.substr(i + 1)
+ return n.el.nodeValue = n.text
+}
+PeachHTML5Editor.prototype.computed_style = function(n, prop) {
+ var style
+ if (n.type === 'text') {
+ n = n.parent
+ }
+ style = this.iframe.contentWindow.getComputedStyle(n.el, null)
+ return style.getPropertyValue(prop)
+}
+// returns the new white-space value that will preserve spaces for node n
+PeachHTML5Editor.prototype.preserve_space = function(n, ideal_target) {
+ var target, ws, ref
+ if (n.type === 'text') {
+ target = n.parent
+ } else {
+ target = n
+ }
+ while (target !== ideal_target && !target.el.style.whiteSpace) {
+ if (target == null) {
+ console.log("bug #967123")
+ return
+ }
+ target = target.parent
+ }
+ ws = (ref = ws_props[target.el.style.whiteSpace]) != null ? ref.to_preserve : null
+ if (ws == null) {
+ ws = 'pre-wrap'
+ }
+ target.el.style.whiteSpace = ws
+ this.update_style_from_el(target)
+ return ws
+}
+PeachHTML5Editor.prototype.update_style_from_el = function(n) {
+ var style
+ style = n.el.getAttribute('style')
+ if (style != null) {
+ return n.attrs.style = style
+ } else {
+ if (n.attrs.style != null) {
+ return delete n.attrs.style
+ }
+ }
+}
+// remove whitespace that would be trimmed
+// replace whitespace that would collapse with a single space
+// FIXME remove whitespace from after <br> (but not before)
+// FIXME rewrite to
+// check computed white-space prop on txt parents
+// batch replace txt node contents (ie don't loop for each char)
+PeachHTML5Editor.prototype.collapse_whitespace = function(tree) {
+ var cur, cur_i, cur_px, first, iterate, next, next_i, next_pos, next_px, operate, pos, prev, prev_i, prev_pos, prev_px, queue, remove, removed_char, replace_with_space
+ if (tree == null) {
+ tree = this.tree
+ }
+ prev = cur = next = null
+ prev_i = cur_i = next_i = 0
+ prev_pos = pos = next_pos = null
+ prev_px = cur_px = next_px = null
+ first = true
+ removed_char = null
+
+ tree_remove_empty_text_nodes(tree)
+
+ iterate = function(tree, cb) {
+ var advance, block, i, j, n
+ for (j = 0; j < tree.length; j++) {
+ n = tree[j]
+ if (n.type === 'text') {
+ i = 0
+ while (i < n.text.length) { // don't foreach, cb might remove chars
+ advance = cb(n, i)
+ if (advance) {
+ i += 1
+ }
+ }
+ }
+ if (n.type === 'tag') {
+ block = is_display_block(n.el)
+ if (block) {
+ cb(null)
+ }
+ if (n.children.length > 0) {
+ iterate(n.children, cb)
+ }
+ if (block) {
+ cb(null)
+ }
+ }
+ }
+ }
+ // remove cur char
+ remove = function(undo) {
+ if (undo) {
+ cur.el.textContent = cur.text = (cur.text.substr(0, cur_i)) + removed_char + (cur.text.substr(cur_i))
+ if (next === cur) { // in same text node
+ next_i += 1
+ }
+ return -1
+ } else {
+ removed_char = cur.text.charAt(cur_i)
+ cur.el.textContent = cur.text = (cur.text.substr(0, cur_i)) + (cur.text.substr(cur_i + 1))
+ if (next === cur) { // in same text node
+ if (next_i === 0) {
+ throw "how is this possible?"
+ }
+ next_i -= 1
+ }
+ return 1
+ }
+ }
+ replace_with_space = function(undo) {
+ if (undo) {
+ cur.text = (cur.text.substr(0, cur_i)) + removed_char + (cur.text.substr(cur_i + 1))
+ cur.el.textContent = cur.text
+ } else {
+ removed_char = cur.text.charAt(cur_i)
+ if (removed_char !== ' ') {
+ cur.text = (cur.text.substr(0, cur_i)) + ' ' + (cur.text.substr(cur_i + 1))
+ cur.el.textContent = cur.text
+ }
+ }
+ return 0
+ }
+ // return true if cur was removed from the dom (ie re-use same prev)
+ operate = function() {
+ // cur definitately set
+ // prev and/or next might be null, indicating the start/end of a display:block
+ var bounds, dbg, fixer, fixers, i, need_undo, new_next_px, new_prev_px, removed, undo_arg
+ if (!is_space_code(cur.text.charCodeAt(cur_i))) {
+ return false
+ }
+ fixers = [remove, replace_with_space]
+ // check for common case: single whitespace surrounded by non-whitespace chars
+ if ((prev != null) && (next != null)) {
+ if (!((is_space_code(prev.text.charCodeAt(prev_i))) || (is_space_code(next.text.charCodeAt(next_i))))) {
+ dbg = cur.text.charCodeAt(cur_i)
+ if (cur.text.charAt(cur_i) === ' ') {
+ return false
+ } else {
+ fixers = [replace_with_space]
+ }
+ }
+ }
+ bounds = text_range_bounds(cur.el, cur_i, cur_i + 1)
+ // consistent cases:
+ // 1. zero rects returned by getClientRects() means collapsed space
+ if (bounds === null) {
+ return remove()
+ }
+ // 2. width greater than zero means visible space
+ if (bounds.w > 0) {
+ // has bounds, don't try removing
+ fixers = [replace_with_space]
+ }
+ // now the weird edge cases...
+ //
+ // firefox and chromium both report zero width for characters at the end
+ // of a line where the text wraps (automatically, due to word-wrap) to
+ // the next line. These do not appear to be distinguishable from
+ // collapsed spaces via the range/bounds api, so...
+ //
+ // remove it from the dom, and if prev or next moves, put it back.
+ //
+ // this block (try changing it, put it back if something moves) is also
+ // used on collapsable whitespace characters besides space. In this case
+ // the character is replaced with a normal space character instead of
+ // removed
+ if ((prev != null) && (prev_px == null)) {
+ prev_px = new_cursor_position({n: prev, i: prev_i})
+ }
+ if ((next != null) && (next_px == null)) {
+ next_px = new_cursor_position({n: next, i: next_i})
+ }
+ //if prev is null and next is null
+ // parent_px = cur.parent.el.getBoundingClientRect()
+ undo_arg = true // just for readabality
+ removed = 0
+ for (i = 0; i < fixers.length; i++) {
+ fixer = fixers[i]
+ if (removed > 0) {
+ break
+ }
+ removed += fixer()
+ need_undo = false
+ if (prev != null) {
+ if (prev_px != null) {
+ new_prev_px = new_cursor_position({n: prev, i: prev_i})
+ if (new_prev_px != null) {
+ if (new_prev_px.x !== prev_px.x || new_prev_px.y !== prev_px.y) {
+ need_undo = true
+ }
+ } else {
+ need_undo = true
+ }
+ } else {
+ console.log("this shouldn't happen, we remove spaces that don't locate")
+ }
+ }
+ if ((next != null) && !need_undo) {
+ if (next_px != null) {
+ new_next_px = new_cursor_position({n: next, i: next_i})
+ if (new_next_px != null) {
+ if (new_next_px.x !== next_px.x || new_next_px.y !== next_px.y) {
+ need_undo = true
+ }
+ } else {
+ need_undo = true
+ }
+ }
+ //else
+ // console.log "removing space becase space after it is collapsed"
+ }
+ if (need_undo) {
+ removed += fixer(undo_arg)
+ }
+ }
+ if (removed > 0) {
+ return true
+ } else {
+ return false
+ }
+ }
+ // pass null at start/end of display:block
+ queue = function(n, i) {
+ var advance, removed
+ next = n
+ next_i = i
+ next_px = null
+ advance = true
+ if (cur != null) {
+ removed = operate()
+ // don't advance (to the next character next time) if we removed a
+ // character from the same text node as ``next``, because doing so
+ // renumbers the indexes in that string
+ if (removed && cur === next) {
+ advance = false
+ }
+ } else {
+ removed = false
+ }
+ if (!removed) {
+ prev = cur
+ prev_i = cur_i
+ prev_px = cur_px
+ }
+ cur = next
+ cur_i = next_i
+ cur_px = next_px
+ return advance
+ }
+ queue(null)
+ iterate(tree, queue)
+ queue(null)
+
+ tree_remove_empty_text_nodes(tree)
+}
+// call this after you insert or remove inline nodes. It will:
+// merge consecutive text nodes
+// remove empty text nodes
+// adjust white-space property
+// note: this assumes that all whitespace in text nodes should be displayed
+// (ie not collapse or be trimmed) and will change the white-space property
+// as needed to achieve this.
+PeachHTML5Editor.prototype.text_cleanup = function(n) {
+ var block, eats_start_sp, i, last, n_i, need_preserve, prev, prev_i, run, ws
+ if (this.is_display_block(n)) {
+ block = n
+ } else {
+ block = this.find_block_parent(n)
+ if (block == null) {
+ return
+ }
+ }
+ run = this.get_text_run(block)
+ if (run == null) {
+ return
+ }
+ if (run.length > 1) {
+ i = 1
+ prev = run[0]
+ while (i < run.length) {
+ n = run[i]
+ if (prev.type === 'text' && n.type === 'text') {
+ if (prev.parent === n.parent) {
+ prev_i = n.parent.children.indexOf(prev)
+ n_i = n.parent.children.indexOf(n)
+ if (n_i === prev_i + 1) {
+ prev.text = prev.text + n.text
+ prev.el.textContent = prev.text
+ this.remove_node(n)
+ run.splice(i, 1)
+ continue // don't increment i or change prev
+ }
+ }
+ }
+ i += 1
+ prev = n
+ }
+ }
+ // remove empty text nodes
+ i = 0
+ while (i < run.length) {
+ n = run[i]
+ if (n.type === 'text') {
+ if (n.text === '') {
+ this.remove_node(n)
+ // FIXME maybe remove parents recursively if this makes them empty
+ run.splice(i, 1)
+ continue // don't increment i
+ }
+ }
+ i += 1
+ }
+ // note: inline tags can have white-space:pre-line/etc
+ // note: inline-blocks have their whitespace collapsed independantly of outer run
+ // note: inline-blocks are treated like non-whitespace char even if empty
+ if (block.el.style.whiteSpace != null) {
+ ws = block.el.style.whiteSpace
+ if (ws_props[ws]) {
+ if (ws_props[ws].space) {
+ if (ws_props[ws].to_collapse === 'normal') {
+ block.el.style.whiteSpace = null
+ } else {
+ block.el.style.whiteSpace = ws_props[ws].to_collapse
+ }
+ this.update_style_from_el(block)
+ }
+ }
+ }
+ // note: space after <br> colapses, but not space before
+ // check for spaces that would collapse without help
+ eats_start_sp = true // if the next node starts with space it collapses (unless pre)
+ prev = null
+ for (i = 0; i < run.length; ++i) {
+ n = run[i]
+ if (n.type === 'tag') {
+ if (n.name === 'br') {
+ eats_start_sp = true
+ } else {
+ eats_start_sp = false
+ }
+ } else {
+ need_preserve = false
+ if (n.type !== 'text') {
+ console.log("bug #232308")
+ return
+ }
+ if (eats_start_sp) {
+ if (is_space_code(n.text.charCodeAt(0))) {
+ need_preserve = true
+ }
+ }
+ if (!need_preserve) {
+ need_preserve = multi_sp_regex.test(n.text)
+ }
+ if (need_preserve) {
+ // do we have it already?
+ ws = this.computed_style(n, 'white-space') // FIXME implement this
+ if (ws_props[ws] == null ? true : ws_props[ws].space == null) {
+ // 2nd arg is ideal target for css rule
+ ws = this.preserve_space(n, block)
+ }
+ eats_start_sp = false
+ } else {
+ if (is_space_code(n.text.charCodeAt(n.text.length - 1))) {
+ ws = this.computed_style(n, 'white-space') // FIXME implement this
+ if ((ref1 = ws_props[ws]) != null ? ref1.space : void 0) {
+ eats_start_sp = false
+ } else {
+ eats_start_sp = true
+ }
+ } else {
+ eats_start_sp = false
+ }
+ }
+ }
+ }
+ // check if text ends with a collapsable space
+ if (run.length > 0) {
+ last = run[run.length - 1]
+ if (last.type === 'text') {
+ if (eats_start_sp) {
+ this.preserve_space(last, block)
+ }
+ }
+ }
+}
+PeachHTML5Editor.prototype.css_clear = function(n, prop) {
+ var css_delimiter_regex, i, styles
+ if (n.attrs.style == null) {
+ return
+ }
+ if (n.attrs.style === '') {
+ return
+ }
+ css_delimiter_regex = new RegExp('\s*;\s*', 'g') // FIXME make this global
+ styles = n.attrs.style.trim().split(css_delimiter)
+ if (!(styles.length > 0)) {
+ return
+ }
+ if (styles[styles.length - 1] === '') {
+ styles.pop()
+ if (!(styles.length > 0)) {
+ return
+ }
+ }
+ i = 0
+ while (i < styles.length) {
+ if (styles[i].substr(0, 12) === 'white-space:') {
+ styles.splice(i, 1)
+ } else {
+ i += 1
+ }
+ }
+}
+// WARNING: after calling this one or more times, you MUST:
+// if it's inline: call @text_cleanup
+// call @changed()
+PeachHTML5Editor.prototype.remove_node = function(n) {
+ var i
+ i = n.parent.children.indexOf(n)
+ if (i === -1) {
+ throw "BUG #9187112313"
+ }
+ n.el.parentNode.removeChild(n.el)
+ n.parent.children.splice(i, 1)
+}
+// remove a node from the tree/dom, insert into new_parent before insert_before?end
+// WARNING: after calling this one or more times, you MUST:
+// if it's inline: call @text_cleanup
+// call @changed()
+PeachHTML5Editor.prototype.move_node = function(n, new_parent, insert_before) {
+ var before_i, i
+ if (insert_before == null) {
+ insert_before = null
+ }
+ i = n.parent.children.indexOf(n)
+ if (i === -1) {
+ throw "Error: tried to remove node, but it's not in it's parents list of children"
+ return
+ }
+ if (insert_before != null) {
+ before_i = new_parent.children.indexOf(insert_before)
+ if (i === -1) {
+ throw "Error: tried to move a node to be before a non-existent node"
+ }
+ insert_before = insert_before.el
+ }
+ this.remove_node(n)
+ if (insert_before != null) {
+ new_parent.el.insertBefore(n.el, insert_before)
+ new_parent.children.splice(before_i, 0, n)
+ } else {
+ new_parent.el.appendChild(n.el, insert_before)
+ new_parent.children.push(n)
+ }
+ n.parent = new_parent
+}
+// remove it, forget where it was
+PeachHTML5Editor.prototype.kill_cursor = function() {
+ if (this.cursor_visible) {
+ this.cursor_el.parentNode.removeChild(this.cursor_el)
+ this.cursor_visible = false
+ }
+ this.cursor = null
+ this.annotate(null)
+}
+PeachHTML5Editor.prototype.move_cursor = function(cursor) {
+ var height
+ this.cursor_ideal_x = cursor.x
+ this.cursor = cursor
+ if (!this.cursor_visible) {
+ this.cursor_el = domify(this.outer_idoc, {div: { id: 'cursor'}})
+ this.overlay.appendChild(this.cursor_el)
+ this.cursor_visible = true
+ }
+ this.cursor_el.style.left = (cursor.x + overlay_padding - 1) + "px"
+ if (cursor.h < 5) {
+ height = 12
+ } else {
+ height = cursor.h
+ }
+ this.cursor_el.style.top = (cursor.y + overlay_padding + Math.round(height * .07)) + "px"
+ this.cursor_el.style.height = (Math.round(height * 0.82)) + "px"
+ this.annotate(cursor.n)
+ this.scroll_into_view(cursor.y, height)
+}
+PeachHTML5Editor.prototype.scroll_into_view = function(y, h) {
+ var downmost, upmost
+ if (h == null) {
+ h = 0
+ }
+ y += overlay_padding // convert units from @idoc to @wrap2
+ // very top of document
+ if (y <= breathing_room) {
+ this.wrap2.scrollTop = 0
+ return
+ }
+ // very bottom of document
+ if (y + h >= this.wrap2.scrollHeight - breathing_room) {
+ this.wrap2.scrollTop = this.wrap2.scrollHeight - this.wrap2_height
+ return
+ }
+ // The most scrolled up (lowest value for scrollTop) that would be OK
+ upmost = y + h + breathing_room - this.wrap2_height
+ upmost = Math.max(upmost, 0)
+ // the most scrolled down (highest value for scrollTop) that would be OK
+ downmost = y - breathing_room
+ downmost = Math.min(downmost, this.wrap2.scrollHeight - this.wrap2_height)
+ if (upmost > downmost) { // means h is too big to fit
+ // scroll so top is visible
+ this.wrap2.scrollTop = downmost
+ return
+ }
+ if (this.wrap2.scrollTop < upmost) {
+ this.wrap2.scrollTop = upmost
+ return
+ }
+ if (this.wrap2.scrollTop > downmost) {
+ this.wrap2.scrollTop = downmost
+ return
+ }
+}
+PeachHTML5Editor.prototype.annotate = function(n) {
+ var alpha, ann_box, ann_tag, bounds, prev_bounds
+ while (this.matting.length > 0) {
+ this.overlay.removeChild(this.matting[0])
+ this.matting.shift()
+ }
+ if (n == null) {
+ return
+ }
+ prev_bounds = {x: 0, y: 0, w: 0, h: 0}
+ alpha = 0.1
+ while (((n != null ? n.el : void 0) != null) && n !== this.tree_parent) {
+ if (n.type === 'text') {
+ n = n.parent
+ continue
+ }
+ bounds = get_el_bounds(n.el)
+ if (bounds == null) {
+ return
+ }
+ if (bounds.x === prev_bounds.x && bounds.y === prev_bounds.y && bounds.w === prev_bounds.w && bounds.h === prev_bounds.h) {
+ n = n.parent
+ continue
+ }
+ ann_box = domify(this.outer_idoc, {div: {"class": 'ann_box', style: "left: " + (bounds.x - 1 + overlay_padding) + "px; top: " + (bounds.y - 2 + overlay_padding) + "px; width: " + bounds.w + "px; height: " + bounds.h + "px"}}) // outline: 1000px solid rgba(0,153,255,#{alpha});
+ this.overlay.appendChild(ann_box)
+ this.matting.push(ann_box)
+ ann_tag = domify(this.outer_idoc, {div: {"class": 'ann_tag', style: "left: " + (bounds.x + 1 + overlay_padding) + "px; top: " + (bounds.y - 7 + overlay_padding) + "px",children: [domify(this.outer_idoc, {text: " " + n.name + " "})]}})
+ this.overlay.appendChild(ann_tag)
+ this.matting.push(ann_tag)
+ n = n.parent
+ alpha *= 1.5
+ }
+}
+PeachHTML5Editor.prototype.pretty_html = function(tree, indent, parent_flags) {
+ var attr_keys, cs, display, float, i, j, in_flow, in_flow_block, inner_flags, is_block, is_br, is_text, k, n, next_indent, position, prev_in_flow_is_block, prev_in_flow_is_text, ret, visibility, want_nl, whitespace
+ if (indent == null) {
+ indent = ''
+ }
+ if (parent_flags == null) {
+ parent_flags = {
+ pre_ish: false,
+ block: true,
+ want_nl: false
+ }
+ }
+ ret = ''
+ want_nl = parent_flags.want_nl
+ prev_in_flow_is_text = false
+ prev_in_flow_is_block = false
+ for (i = 0; i < tree.length; ++i) {
+ n = tree[i]
+ inner_flags = {
+ want_nl: true
+ }
+ is_br = false
+ switch (n.type) {
+ case 'tag':
+ if (n.name === 'br') {
+ is_br = true
+ }
+ is_text = false
+ if (n.el.currentStyle != null) {
+ cs = n.el.currentStyle
+ whitespace = cs['white-space']
+ display = cs['display']
+ position = cs['position']
+ float = cs['float']
+ visibility = cs['visibility']
+ } else {
+ cs = this.iframe.contentWindow.getComputedStyle(n.el, null)
+ whitespace = cs.getPropertyValue('white-space')
+ display = cs.getPropertyValue('display')
+ position = cs.getPropertyValue('position')
+ float = cs.getPropertyValue('float')
+ visibility = cs.getPropertyValue('visibility')
+ }
+ if (n.name === 'textarea') {
+ inner_flags.pre_ish = true
+ } else {
+ inner_flags.pre_ish = whitespace.substr(0, 3) === 'pre'
+ }
+ switch (float) {
+ case 'left':
+ case 'right':
+ in_flow = false
+ break
+ default:
+ switch (position) {
+ case 'absolute':
+ case 'fixed':
+ in_flow = false
+ break
+ default:
+ if ('display' === 'none') {
+ in_flow = false
+ } else {
+ switch (visibility) {
+ case 'hidden':
+ case 'collapse':
+ in_flow = false
+ break
+ default:
+ in_flow = true
+ }
+ }
+ }
+ }
+ switch (display) {
+ case 'inline':
+ case 'none':
+ inner_flags.block = false
+ is_block = in_flow_block = false
+ break
+ case 'inline-black':
+ inner_flags.block = true
+ is_block = in_flow_block = false
+ break
+ default:
+ inner_flags.block = true
+ is_block = true
+ in_flow_block = in_flow
+ }
+ break
+ case 'text':
+ is_text = true
+ is_block = false
+ in_flow = true
+ in_flow_block = false
+ break
+ default: // 'comment', 'doctype'
+ is_text = false
+ is_block = false
+ in_flow = false
+ in_flow_block = false
+ }
+ // print whitespace if we can
+ if (!parent_flags.pre_ish) {
+ if (!(prev_in_flow_is_text && is_br)) {
+ if ((i === 0 && parent_flags.block) || in_flow_block || prev_in_flow_is_block) {
+ if (want_nl) {
+ ret += "\n"
+ }
+ ret += indent
+ }
+ }
+ }
+ switch (n.type) {
+ case 'tag':
+ ret += '<' + n.name
+ attr_keys = []
+ for (k in n.attrs) {
+ attr_keys.unshift(k)
+ }
+ //attr_keys.sort()
+ for (j = 0; j < attr_keys.length; ++j) {
+ k = attr_keys[j]
+ ret += " " + k
+ if (n.attrs[k].length > 0) {
+ ret += "=\"" + (enc_attr(n.attrs[k])) + "\""
+ }
+ }
+ ret += '>'
+ if (void_elements[n.name] == null) {
+ if (inner_flags.block) {
+ next_indent = indent + ' '
+ } else {
+ next_indent = indent
+ }
+ if (n.children.length) {
+ ret += this.pretty_html(n.children, next_indent, inner_flags)
+ }
+ ret += "</" + n.name + ">"
+ }
+ break
+ case 'text':
+ ret += enc_text(n.text)
+ break
+ case 'comment':
+ ret += "<!--" + n.text + "-->" // TODO encode?
+ break
+ case 'doctype':
+ ret += "<!DOCTYPE " + n.name
+ if ((n.public_identifier != null) && n.public_identifier.length > 0) {
+ ret += " \"" + n.public_identifier + "\""
+ }
+ if ((n.system_identifier != null) && n.system_identifier.length > 0) {
+ ret += " \"" + n.system_identifier + "\""
+ }
+ ret += ">"
+ }
+ want_nl = true
+ if (in_flow) {
+ prev_in_flow_is_text = is_text
+ prev_in_flow_is_block = is_block || (in_flow && is_br)
+ }
+ }
+ if (tree.length) {
+ // output final newline if allowed
+ if (!parent_flags.pre_ish) {
+ if (prev_in_flow_is_block || parent_flags.block) {
+ ret += "\n" + (indent.substr(4))
+ }
+ }
+ }
+ return ret
+}
+PeachHTML5Editor.prototype.onblur = function() {
+ this.kill_cursor()
+}
+PeachHTML5Editor.prototype.have_focus = function() {
+ this.editor_is_focused = true
+ this.poll_for_blur()
+}
+PeachHTML5Editor.prototype.poll_for_blur = function() {
+ if (this.poll_for_blur_timeout != null) {
+ return
+ }
+ this.poll_for_blur_timeout = timeout(150, (function(_this) { return function() {
+ next_frame(function() { // pause polling when browser knows we're not active/visible/etc.
+ _this.poll_for_blur_timeout = null
+ if (document.activeElement === _this.outer_iframe) {
+ _this.poll_for_blur()
+ } else {
+ _this.editor_is_focused = false
+ _this.onblur()
+ }
+ })
+ }})(this))
+}
+
+window.peach_html5_editor = function() {
+ // coffeescript: return new PeachHTML5Editor args...
+ // compiles to below... there must be a better way
+ var args
+ args = 1 <= arguments.length ? slice.call(arguments, 0) : []
+ return (function(func, args, ctor) {
+ ctor.prototype = func.prototype
+ var child = new ctor, result = func.apply(child, args)
+ return Object(result) === result ? result : child
+ })(PeachHTML5Editor, args, function(){})
+}
+
+}).call(this)
+
+// test in browser: peach_html5_editor(document.getElementsByTagName('textarea')[0])
Got questions, comments, patches, etc.? Contact Jason Woofenden