# 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 .
# 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
# remove whitespace that would be trimmed
# replace whitespace that would collapse with a single space
# FIXME delete this, use @collapse_whitespace instead
collapse_whitespace = (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)
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 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,
, 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 '
', @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
# does this node have whitespace that would be collapsed by white-space: normal?
# note: this checks direct text children, and does _not_ recurse into child tags
# tag is a node with type:"tag"
# FIXME use new textrun api
has_collapsable_space: (tag) ->
for n in tag.children
if n.type is 'text'
for i in [0...n.text.length]
code = n.text.charCodeAt i
if code isnt 32 and is_space_code code
# tab, return
return true
# check for double spaces that don't surround insert location
continue if i is 0
if n.text.substr(i - 1, 2) is ' '
return true
if n.text.length > 0
if is_space_code n.text.charCodeAt 0
return true
if is_space_code n.text.charCodeAt n.text.length - 1
return true
return false
# 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
collapse_whitespace: (tree = @tree) ->
return collapse_whitespace tree # FIXME CONTINUE
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
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 += ""
when 'text'
ret += enc_text n.text
when 'comment'
ret += "" # TODO encode?
when 'doctype'
ret += " 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])