1 # Copyright 2015 Jason Woofenden
2 # This file implements an WYSIWYG editor in the browser (no contenteditable)
4 # This program is free software: you can redistribute it and/or modify it under
5 # the terms of the GNU Affero General Public License as published by the Free
6 # Software Foundation, either version 3 of the License, or (at your option) any
9 # This program is distributed in the hope that it will be useful, but WITHOUT
10 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11 # FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
14 # You should have received a copy of the GNU Affero General Public License
15 # along with this program. If not, see <http://www.gnu.org/licenses/>.
20 timeout = (ms, cb) -> return setTimeout cb, ms
22 if (window.requestAnimationFrame?)
23 window.requestAnimationFrame cb
27 this_url_sans_path = ->
28 ret = "#{window.location.href}"
29 clip = ret.lastIndexOf '#'
31 ret = ret.substr 0, clip
32 clip = ret.lastIndexOf '?'
34 ret = ret.substr 0, clip
35 clip = ret.lastIndexOf '/'
37 ret = ret.substr 0, clip + 1
40 # xml 1.0 spec, chromium and firefox accept these, plus lots of unicode chars
41 valid_attr_regex = new RegExp '^[a-zA-Z_:][-a-zA-Z0-9_:.]*$'
42 # html5 spec is much more lax, but chromium won't let me make at attribute with the name "4"
43 js_attr_regex = new RegExp '^[oO][nN].'
45 debug_dot_at = (doc, x, y) ->
47 el = doc.createElement 'div'
48 el.setAttribute 'style', "position: absolute; left: #{x}px; top: #{y}px; width: 1px; height: 3px; background-color: red"
49 doc.body.appendChild el
50 #console.log(new Error().stack)
52 # text nodes don't have getBoundingClientRect(), so use selection api to find
54 get_el_bounds = (el) ->
55 if el.getBoundingClientRect?
56 rect = el.getBoundingClientRect()
58 # text nodes don't have getBoundingClientRect(), so use range api
59 range = el.ownerDocument.createRange()
60 range.selectNodeContents el
61 rect = range.getBoundingClientRect()
62 doc = el.ownerDocument.documentElement
63 win = el.ownerDocument.defaultView
64 y_fix = win.pageYOffset - doc.clientTop
65 x_fix = win.pageXOffset - doc.clientLeft
69 w: rect.width ? (rect.right - rect.left)
70 h: rect.height ? (rect.top - rect.bottom)
73 is_display_block = (el) ->
75 return el.currentStyle.display is 'block'
77 return window.getComputedStyle(el, null).getPropertyValue('display') is 'block'
79 # Pass return value from dom event handlers to this.
80 # If they return false, this will addinionally stop propagation and default.
81 event_return = (e, bool) ->
88 # Warning: currently assumes you're asking about a single character
89 # Note: chromium returns multiple bounding rects for a space at a line-break
90 # Note: chromium's getBoundingClientRect() is broken (when zero-area client rects)
91 # Note: sometimes returns null (eg for whitespace that is not visible)
92 text_range_bounds = (el, start, end) ->
93 range = document.createRange()
94 range.setStart el, start
96 rects = range.getClientRects()
101 doc = el.ownerDocument.documentElement
102 win = el.ownerDocument.defaultView
103 y_fix = win.pageYOffset - doc.clientTop
104 x_fix = win.pageXOffset - doc.clientLeft
108 w: rect.width ? (rect.right - rect.left)
109 h: rect.height ? (rect.top - rect.bottom)
111 bounding: range.getBoundingClientRect()
114 # figure out the x/y coordinates of where the cursor should be if it's at
115 # position ``i`` within text node ``n``
116 # sometimes returns null (eg for whitespace that is not visible)
117 window.cursor_to_xyh = cursor_to_xyh = (n, i) ->
118 range = document.createRange()
119 if n.text.length is 0
120 ret = text_range_bounds n.el, 0, 0
121 else if i is n.text.length
122 ret = text_range_bounds n.el, i - 1, i
126 ret = text_range_bounds n.el, i, i + 1
128 debug_dot_at n.el.ownerDocument, ret.x, ret.y
131 # encode text so it can be safely placed inside an html attribute
132 enc_attr_regex = new RegExp '(&)|(")|(\u00A0)', 'g'
134 return txt.replace enc_attr_regex, (match, amp, quote) ->
135 return '&' if (amp)
136 return '"' if (quote)
138 enc_text_regex = new RegExp '(&)|(<)|(\u00A0)', 'g'
140 return txt.replace enc_text_regex, (match, amp, lt) ->
141 return '&' if (amp)
142 return '<' if (lt)
162 # TODO make these always pretty-print (on the inside) like blocks
163 no_text_elements = { # these elements never contain text
173 domify = (doc, hash) ->
174 for tag, attrs of hash
176 return document.createTextNode attrs
177 el = document.createElement tag
186 outer_css = (args) ->
189 inner_padding = args.inner_padding ? overlay_padding
190 frame_width = args.frame_width ? inner_padding
191 # TODO editor controls height...
192 occupy = (left, top = left, right = left, bottom = top) ->
195 return Math.max(left, top, right, bottom)
202 ret += "border: #{occupy 1}px solid black;"
203 ret += "padding: #{occupy frame_width}px;"
206 ret += "border: #{occupy 1}px solid black;"
207 ret += "padding: #{occupy inner_padding}px;"
208 ret += "padding-right: #{inner_padding + occupy 0, 0, 15, 0}px;" # for scroll bar
209 ret += "width: #{w}px;"
210 ret += "height: #{h}px;"
211 ret += 'overflow-x: hidden;'
212 ret += 'overflow-y: scroll;'
215 ret += 'position: relative;'
216 ret += "width: #{w}px;"
217 ret += "min-height: #{h}px;"
220 ret += 'box-sizing: border-box;'
222 ret += 'border: none;'
224 ret += "width: #{w}px;"
225 #ret += "height: #{h}px;" # height auto-set when content set/changed
226 ret += '-ms-user-select: none;'
227 ret += '-webkit-user-select: none;'
228 ret += '-moz-user-select: none;'
229 ret += 'user-select: none;'
232 ret += 'position: absolute;'
233 ret += "left: -#{inner_padding}px;"
234 ret += "top: -#{inner_padding}px;"
235 ret += "right: -#{inner_padding}px;"
236 ret += "bottom: -#{inner_padding}px;"
237 ret += 'overflow: hidden;'
240 ret += 'position: absolute;'
241 ret += 'background: rgba(100,100,100,0.2);'
244 ret += 'position: absolute;'
245 ret += 'height: 1em;' # FIXME adjust for hight of text
247 ret += 'background: #444;'
248 ret += '-webkit-animation: blink 1s steps(2, start) infinite;'
249 ret += 'animation: blink 1s steps(2, start) infinite;'
251 ret += '@-webkit-keyframes blink {'
252 ret += 'to { visibility: hidden; }'
254 ret += '@keyframes blink {'
255 ret += 'to { visibility: hidden; }'
259 ret += 'position: absolute;'
260 ret += 'border: 1px solid rgba(0,0,0,0.1);'
261 ret += 'outline: 1px solid rgba(255,255,255,0.1);' # in case there's a black background
264 ret += 'z-index: 10;'
265 ret += 'position: absolute;'
266 ret += 'font-size: 8px;'
267 ret += 'white-space: pre;'
268 ret += 'background: rgba(255,255,255,0.4);'
269 ret += '-ms-user-select: none;'
270 ret += '-webkit-user-select: none;'
271 ret += '-moz-user-select: none;'
272 ret += 'user-select: none;'
279 '20': true # capslock
281 '144': true # numlock
283 '91': true # windows "start" key
284 # key codes: (valid on keydown, not keypress)
289 KEY_BACKSPACE = 8 # <--
290 KEY_DELETE = 46 # -->
299 control_key_codes = # we react to these, but they aren't typing
315 instantiate_tree = (tree, parent) ->
320 c.el = parent.ownerDocument.createTextNode c.text
321 parent.appendChild c.el
323 if c.name in ['script', 'object', 'iframe', 'link']
324 # TODO put placeholders instead
327 # TODO create in correct namespace
328 c.el = parent.ownerDocument.createElement c.name
330 # FIXME if attr_whitelist[k]?
331 if valid_attr_regex.test k
332 unless js_attr_regex.test k
333 c.el.setAttribute k, v
334 parent.appendChild c.el
336 instantiate_tree c.children, c.el
340 traverse_tree = (tree, cb) ->
346 done = traverse_tree c.children, cb
350 find_next_cursor_position = (tree, n, i) ->
351 if n.type is 'text' and n.text.length > i
352 orig_xyh = cursor_to_xyh n, i
354 console.log "ERROR: couldn't find xy for current cursor location"
356 for next_i in [i+1 .. n.text.length] # inclusive is valid (after last char)
357 next_xyh = cursor_to_xyh n, next_i
359 if next_xyh.x > orig_xyh.x or next_xyh.y > orig_xyh.y
363 traverse_tree tree, (node, state) ->
364 if node.type is 'text' and state_before is false
365 if cursor_to_xyh(node, 0)?
375 find_prev_cursor_position = (tree, n, i) ->
376 if n? and n.type is 'text' and i > 0
377 orig_xyh = cursor_to_xyh n, i
379 console.log "ERROR: couldn't find xy for current cursor location"
381 for prev_i in [i-1 .. 0]
382 prev_xyh = cursor_to_xyh n, prev_i
384 if prev_xyh.x < orig_xyh.x or prev_xyh.y < orig_xyh.y
389 traverse_tree tree, (node) ->
390 if node.type is 'text'
398 if cursor_to_xyh found, found.text.length # text visible?
399 return [found, found.text.length]
400 return find_prev_cursor_position tree, found, 0
403 find_loc_cursor_position = (tree, loc) ->
405 if c.type is 'tag' or c.type is 'text'
406 bounds = get_el_bounds c.el
407 continue if loc.x < bounds.x
408 continue if loc.x > bounds.x + bounds.w
409 continue if loc.y < bounds.y
410 continue if loc.y > bounds.y + bounds.h
412 ret = find_loc_cursor_position c.children, loc
415 # click is within bounding box that contains all text.
416 return [c, 0] if c.text.length is 0
418 before = cursor_to_xyh c, before_i
420 console.log "error: failed to find cursor pixel location for start of", c
422 after_i = c.text.length
423 after = cursor_to_xyh c, after_i
425 console.log "error: failed to find cursor pixel location for end of", c
427 if loc.y < before.y + before.h and loc.x < before.x
428 # console.log 'before first char on first line'
430 if loc.y > after.y and loc.x > after.x
431 # console.log 'after last char on last line'
434 console.log "Warning: click in bounding box but above first line"
435 continue # above first line (runaround?)
436 if loc.y > after.y + after.h
437 console.log "Warning: click in bounding box but below last line", loc.y, after.y, after.h
438 continue # below last line (shouldn't happen?)
439 while after_i - before_i > 1
440 cur_i = Math.round((before_i + after_i) / 2)
441 cur = cursor_to_xyh c, cur_i
443 console.log "error: failed to find cursor pixel location for", c, cur_i
445 if loc.y < cur.y or (loc.y <= cur.y + cur.h and loc.x < cur.x)
451 # which one is closest?
452 if Math.abs(before.x - loc.x) < Math.abs(after.x - loc.x)
458 # browsers collapse these (html5 spec calls these "space characters")
459 is_space_code = (char_code) ->
461 when 9, 10, 12, 13, 32
465 return is_space_code chr.charCodeAt 0
467 tree_remove_empty_text_nodes = (tree) ->
469 traverse_tree tree, (n) ->
471 if n.text.length is 0
475 # don't completely empty the tree
477 if tree[0].type is 'text'
478 console.log "oop, leaving a blank node because it's the only thing"
480 n.el.parentNode.removeChild n.el
481 for c, i in n.parent.children
483 n.parent.children.splice i, 1
486 # pass a array of nodes (from parser library, ie it should have .el and .text)
487 tree_dedup_space = (tree) ->
488 prev = cur = next = null
489 prev_i = cur_i = next_i = 0
490 prev_pos = pos = next_pos = null
491 prev_px = cur_px = next_px = null
495 tree_remove_empty_text_nodes(tree)
497 iterate = (tree, cb) ->
501 while i < n.text.length # don't foreach, cb might remove chars
506 block = is_display_block n.el
509 if n.children.length > 0
510 iterate n.children, cb
515 removed_char = cur.text.charAt(cur_i)
516 cur.el.textContent = cur.text = (cur.text.substr 0, cur_i) + (cur.text.substr cur_i + 1)
517 if next is cur # in same text node
519 throw "how is this possible?"
524 cur.el.textContent = cur.text = (cur.text.substr 0, cur_i) + removed_char + (cur.text.substr cur_i)
525 if next is cur # in same text node
528 # return true if cur was removed from the dom (ie re-use same prev)
530 # cur definitately set
531 # prev and/or next might be null, indicating the start/end of a display:block
532 return false unless is_space_code cur.text.charCodeAt cur_i
533 bounds = text_range_bounds cur.el, cur_i, cur_i + 1
535 # 1. zero rects returned by getClientRects() means collapsed space
538 # 2. width greater than zero means visible space
541 # now the weird edge cases...
543 # firefox and chromium both report zero width for characters at the end
544 # of a line where the text wraps (automatically, due to word-wrap) to
545 # the next line. These do not appear to be distinguishable from
546 # collapsed spaces via the range/bounds api, so...
548 # remove it from the dom, and if prev or next moves, put it back.
549 if prev? and not prev_px?
550 prev_px = cursor_to_xyh prev, prev_i
551 if next? and not next_px?
552 next_px = cursor_to_xyh next, next_i
553 #if prev is null and next is null
554 # parent_px = cur.parent.el.getBoundingClientRect()
558 new_prev_px = cursor_to_xyh prev, prev_i
559 if new_prev_px.x isnt prev_px.x or new_prev_px.y isnt prev_px.y
562 console.log "this shouldn't happen, we remove spaces that don't locate"
565 new_next_px = cursor_to_xyh next, next_i
566 if new_next_px.x isnt next_px.x or new_next_px.y isnt next_px.y
569 # console.log "removing space becase space after it is collapsed"
571 # pass null at start/end of display:block
579 # don't advance (to the next character next time) if we removed a
580 # character from the same text node as ``next``, because doing so
581 # renumbers the indexes in that string
582 if removed and cur is next
598 tree_remove_empty_text_nodes(tree)
600 class PeachHTML5Editor
601 # Options: (all optional)
602 # editor_id: "id" attribute for outer-most element created by/for editor
603 # css_file: filename of a css file to style editable content
604 # on_init: callback for when the editable content is in place
605 constructor: (in_el, options) ->
606 @options = options ? {}
610 @inited = false # when iframes have loaded
611 @outer_iframe # iframe to hold editor
612 @outer_idoc # "document" object for @outer_iframe
613 @wrap2 = null # scrollbar is on this
614 @iframe = null # iframe to hold editable content
615 @idoc = null # "document" object for @iframe
618 @cursor_visible = false
619 @poll_for_blur_timeout = null
620 @iframe_offset = null
621 opt_fragment = @options.fragment ? true
624 @parser_opts.fragment = 'body'
626 @outer_iframe = domify document, iframe: {}
627 outer_iframe_style = 'border: none !important; margin: 0 !important; padding: 0 !important; height: 100% !important; width: 100% !important;'
628 if @options.editor_id?
629 @outer_iframe.setAttribute 'id', @options.editor_id
630 @outer_iframe.onload = =>
631 @outer_idoc = @outer_iframe.contentDocument
632 icss = domify @outer_idoc, style: children: [
633 domify @outer_idoc, text: css
635 @outer_idoc.head.appendChild icss
636 @iframe = domify @outer_idoc, iframe: sandbox: 'allow-same-origin allow-scripts'
639 setTimeout (=> @init() unless @inited), 200 # firefox never fires this onload
640 @outer_idoc.body.appendChild(
641 domify @outer_idoc, div: id: 'wrap1', children: [
642 @wrap2 = domify @outer_idoc, div: id: 'wrap2', children: [
643 domify @outer_idoc, div: id: 'wrap3', children: [
645 @overlay = domify @outer_idoc, div: id: 'overlay'
650 outer_wrap = domify document, div: class: 'peach_html5_editor'
651 @in_el.parentNode.appendChild outer_wrap
652 outer_bounds = get_el_bounds outer_wrap
653 if outer_bounds.w < 300
655 if outer_bounds.h < 300
657 outer_iframe_style += "width: #{outer_bounds.w}px; height: #{outer_bounds.h}px;"
658 @outer_iframe.setAttribute 'style', outer_iframe_style
659 css = outer_css w: outer_bounds.w, h: outer_bounds.h
660 outer_wrap.appendChild @outer_iframe
661 init: -> # called by @iframe's onload (or timeout on firefox)
662 @idoc = @iframe.contentDocument
663 @overlay.onclick = (e) =>
665 return event_return e, @onclick e
666 @overlay.ondoubleclick = (e) =>
668 return event_return e, @ondoubleclick e
669 @outer_idoc.body.onkeyup = (e) =>
671 return event_return e, @onkeyup e
672 @outer_idoc.body.onkeydown = (e) =>
674 return event_return e, @onkeydown e
675 @outer_idoc.body.onkeypress = (e) =>
677 return event_return e, @onkeypress e
678 # chromium doesn't resolve relative urls as though they were at the same domain
679 # so add a <base> tag
680 @idoc.head.appendChild domify @idoc, base: href: this_url_sans_path()
683 @idoc.head.appendChild domify @idoc, link: rel: 'stylesheet', type: 'text/css', href: @options.css_file
684 @load_html @in_el.value
688 overlay_event_to_inner_xy: (e) ->
689 unless @iframe_offset?
690 @iframe_offset = get_el_bounds @iframe
691 x = e.pageX # TODO ?cross-browserify
692 y = e.pageY + @wrap2.scrollTop # TODO ?cross-browserify
693 # TODO adjust for scrolling
694 return x: x - @iframe_offset.x, y: y - @iframe_offset.y
696 xy = @overlay_event_to_inner_xy e
697 new_cursor = find_loc_cursor_position @tree, xy
699 @move_cursor new_cursor
703 ondoubleclick: (e) ->
707 return false if ignore_key_codes[e.keyCode]?
708 #return false if control_key_codes[e.keyCode]?
711 return false if ignore_key_codes[e.keyCode]?
712 #return false if control_key_codes[e.keyCode]?
716 new_cursor = find_prev_cursor_position @tree, @cursor...
718 @move_cursor new_cursor
721 new_cursor = find_next_cursor_position @tree, c, -1
723 @move_cursor new_cursor
730 new_cursor = find_next_cursor_position @tree, @cursor...
732 @move_cursor new_cursor
735 new_cursor = find_prev_cursor_position @tree, c, -1
737 @move_cursor new_cursor
745 return false unless @cursor?
746 return false unless @cursor[1] > 0
747 @cursor[0].text = @cursor[0].text.substr(0, @cursor[1] - 1) + @cursor[0].text.substr(@cursor[1])
748 @cursor[0].el.nodeValue = @cursor[0].text
749 @move_cursor [@cursor[0], @cursor[1] - 1]
753 return false unless @cursor?
754 return false unless @cursor[1] < @cursor[0].text.length
755 @cursor[0].text = @cursor[0].text.substr(0, @cursor[1]) + @cursor[0].text.substr(@cursor[1] + 1)
756 @cursor[0].el.nodeValue = @cursor[0].text
757 @move_cursor [@cursor[0], @cursor[1]]
776 return false if ignore_key_codes[e.keyCode]?
777 # return false if control_key_codes[e.keyCode]? # handled in keydown
778 char = e.charCode ? e.keyCode
780 char = String.fromCharCode char
782 @cursor[0].text = char + @cursor[0].text
783 else if @cursor[1] is @cursor[0].text.length - 1
784 @cursor[0].text += char
787 @cursor[0].text.substr(0, @cursor[1]) +
789 @cursor[0].text.substr(@cursor[1])
790 @cursor[0].el.nodeValue = @cursor[0].text
791 @move_cursor [@cursor[0], @cursor[1] + 1]
794 clear_dom: -> # remove all the editable content (and cursor, overlays, etc)
795 while @idoc.body.childNodes.length
796 @idoc.body.removeChild @idoc.body.childNodes[0]
800 @tree = peach_parser.parse html, @parser_opts
802 instantiate_tree @tree, @idoc.body
803 tree_dedup_space @tree
806 @in_el.onchange = null
807 @in_el.value = @pretty_html @tree
809 @load_html @in_el.value
810 @iframe.style.height = "0"
811 @iframe.style.height = "#{@idoc.body.scrollHeight}px"
812 kill_cursor: -> # remove it, forget where it was
814 @cursor_el.parentNode.removeChild @cursor_el
815 @cursor_visible = false
818 move_cursor: (cursor) ->
819 loc = cursor_to_xyh cursor[0], cursor[1]
821 console.log "error: tried to move cursor to position that has no pixel location", cursor[0], cursor[1]
824 # replace cursor element, to reset blink animation
826 @cursor_el.parentNode.removeChild @cursor_el
827 @cursor_el = domify @outer_idoc, div: id: 'cursor'
828 @overlay.appendChild @cursor_el
829 @cursor_visible = true
830 @cursor_el.style.left = "#{loc.x + overlay_padding - 1}px"
835 @cursor_el.style.top = "#{loc.y + overlay_padding + Math.round(height * .07)}px"
836 @cursor_el.style.height = "#{Math.round height * 0.82}px"
839 while @matting.length > 0
840 @overlay.removeChild @matting[0]
843 prev_bounds = x: 0, y: 0, w: 0, h: 0
849 bounds = get_el_bounds n.el
850 return unless bounds?
851 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
854 matt = 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});
855 @overlay.appendChild matt
857 ann = 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} "]
858 @overlay.appendChild ann
862 pretty_html: (tree, indent = '', parent_flags = pre_ish: false, block: true, want_nl: false) ->
864 want_nl = parent_flags.want_nl
865 prev_in_flow_is_text = false
866 prev_in_flow_is_block = false
869 inner_flags = want_nl: true
876 if n.el.currentStyle?
877 cs = n.el.currentStyle
878 whitespace = cs['white-space']
879 display = cs['display']
880 position = cs['position']
882 visibility = cs['visibility']
884 cs = @iframe.contentWindow.getComputedStyle(n.el, null)
885 whitespace = cs.getPropertyValue 'white-space'
886 display = cs.getPropertyValue 'display'
887 position = cs.getPropertyValue 'position'
888 float = cs.getPropertyValue 'float'
889 visibility = cs.getPropertyValue 'visibility'
890 if n.name is 'textarea'
891 inner_flags.pre_ish = true
893 inner_flags.pre_ish = whitespace.substr(0, 3) is 'pre'
899 when 'absolute', 'fixed'
902 if 'display' is 'none'
906 when 'hidden', 'collapse'
911 when 'inline', 'none'
912 inner_flags.block = false
913 is_block = in_flow_block = false
915 inner_flags.block = true
916 is_block = in_flow_block = false
917 else # block, table, etc
918 inner_flags.block = true
920 in_flow_block = in_flow
925 in_flow_block = false
926 else # 'comment', 'doctype'
930 in_flow_block = false
931 # print whitespace if we can
932 unless parent_flags.pre_ish
933 unless prev_in_flow_is_text and is_br
934 if (i is 0 and parent_flags.block) or in_flow_block or prev_in_flow_is_block
947 if n.attrs[k].length > 0
948 ret += "=\"#{enc_attr n.attrs[k]}\""
950 unless void_elements[n.name]?
952 next_indent = indent + ' '
956 ret += @pretty_html n.children, next_indent, inner_flags
957 ret += "</#{n.name}>"
959 ret += enc_text n.text
961 ret += "<!--#{n.text}-->" # TODO encode?
963 ret += "<!DOCTYPE #{n.name}"
964 if n.public_identifier? and n.public_identifier.length > 0
965 ret += " \"#{n.public_identifier}\""
966 if n.system_identifier? and n.system_identifier.length > 0
967 ret += " \"#{n.system_identifier}\""
971 prev_in_flow_is_text = is_text
972 prev_in_flow_is_block = is_block or (in_flow and is_br)
974 # output final newline if allowed
975 unless parent_flags.pre_ish
976 if prev_in_flow_is_block or parent_flags.block
977 ret += "\n#{indent.substr 4}"
982 @editor_is_focused = true
985 return if @poll_for_blur_timeout? # already polling
986 @poll_for_blur_timeout = timeout 150, =>
987 next_frame => # pause polling when browser knows we're not active/visible/etc.
988 @poll_for_blur_timeout = null
989 if document.activeElement is @outer_iframe
992 @editor_is_focused = false
995 window.peach_html5_editor = (args...) ->
996 return new PeachHTML5Editor args...
998 # test in browser: peach_html5_editor(document.getElementsByTagName('textarea')[0])