+++ /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])
Got questions, comments, patches, etc.? Contact Jason Woofenden