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/>.
18 var KEY_BACKSPACE, KEY_DELETE, KEY_DOWN, KEY_END, KEY_ENTER, KEY_ESCAPE, KEY_HOME, KEY_INSERT, KEY_LEFT, KEY_PAGE_DOWN, KEY_PAGE_UP, KEY_RIGHT, KEY_TAB, KEY_UP, breathing_room, control_key_codes, enc_attr_regex, enc_text_regex, event_return, find_prev_cursor_position, find_up_cursor_position, get_el_bounds, ignore_key_codes, js_attr_regex, multi_sp_regex, no_text_elements, overlay_padding, text_range_bounds, valid_attr_regex, void_elements, ws_props, xy_to_cursor, slice = [].slice
22 breathing_room = 30 // minimum pixels above/below cursor (scrolling)
24 function timeout (ms, cb) {
25 return setTimeout(cb, ms)
28 function next_frame (cb) {
29 if (window.requestAnimationFrame != null) {
30 window.requestAnimationFrame(cb)
36 function this_url_sans_path () {
38 ret = "" + window.location.href
39 clip = ret.lastIndexOf('#')
41 ret = ret.substr(0, clip)
43 clip = ret.lastIndexOf('?')
45 ret = ret.substr(0, clip)
47 clip = ret.lastIndexOf('/')
49 ret = ret.substr(0, clip + 1)
54 // table too look up the properties of various values for css's white-space
57 space: false, // spaces are not preserved/rendered
58 newline: false, // newlines are not preserved/rendered
59 wrap: true, // text is word-wrapped
60 to_preserve: 'pre-wrap' // to preservespaces, change white-space to this
72 to_preserve: 'pre-wrap'
88 // xml 1.0 spec, chromium and firefox accept these, plus lots of unicode chars
89 valid_attr_regex = new RegExp('^[a-zA-Z_:][-a-zA-Z0-9_:.]*$')
90 // html5 spec is much more lax, but chromium won't let me make at attribute with the name "4"
91 js_attr_regex = new RegExp('^[oO][nN].')
92 // html5 spec says that only these characters are collapsable
93 multi_sp_regex = new RegExp('[\u0020\u0009\u000a\u000c\u000d][\u0020\u0009\u000a\u000c\u000d]')
95 function str_has_ws_run (str) {
96 return multi_sp_regex.test(str)
99 // text nodes don't have getBoundingClientRect(), so use selection api to find
101 get_el_bounds = window.bounds = function(el) {
102 var doc, range, rect, win, x_fix, y_fix
103 if (el.getBoundingClientRect != null) {
104 rect = el.getBoundingClientRect()
106 // text nodes don't have getBoundingClientRect(), so use range api
107 range = el.ownerDocument.createRange()
108 range.selectNodeContents(el)
109 rect = range.getBoundingClientRect()
111 doc = el.ownerDocument.documentElement
112 win = el.ownerDocument.defaultView
113 y_fix = win.pageYOffset - doc.clientTop
114 x_fix = win.pageXOffset - doc.clientLeft
116 x: rect.left + x_fix,
118 w: rect.width != null ? rect.width : rect.right - rect.left,
119 h: rect.height != null ? rect.height : rect.top - rect.bottom
123 function is_display_block (el) {
124 if (el.currentStyle != null) {
125 return el.currentStyle.display === 'block'
127 return window.getComputedStyle(el, null).getPropertyValue('display') === 'block'
131 // Pass return value from dom event handlers to this.
132 // If they return false, this will addinionally stop propagation and default.
133 function event_return (e, bool) {
134 if (bool === false) {
135 if (e.stopPropagation != null) {
138 if (e.preventDefault != null) {
145 // Warning: currently assumes you're asking about a single character
146 // Note: chromium returns multiple bounding rects for a space at a line-break
147 // Note: chromium's getBoundingClientRect() is broken (when zero-area client rects)
148 // Note: sometimes returns null (eg for whitespace that is not visible)
149 text_range_bounds = function(el, start, end) {
150 var doc, range, rect, rects, win, x_fix, y_fix
151 range = document.createRange()
152 range.setStart(el, start)
153 range.setEnd(el, end)
154 rects = range.getClientRects()
155 if (rects.length > 0) {
156 if (rects.length > 1) {
157 if (rects[1].width > rects[0].width) {
168 doc = el.ownerDocument.documentElement
169 win = el.ownerDocument.defaultView
170 y_fix = win.pageYOffset - doc.clientTop
171 x_fix = win.pageXOffset - doc.clientLeft
173 x: rect.left + x_fix,
175 w: rect.width != null ? rect.width : rect.right - rect.left,
176 h: rect.height != null ? rect.height : rect.top - rect.bottom,
178 bounding: range.getBoundingClientRect()
182 function CursorPosition(args) {
183 this.n = args.n != null ? args.n : null
184 this.i = args.i != null ? args.i : null
185 if (args.x != null) {
194 CursorPosition.prototype.set_xyh = function() {
196 range = document.createRange()
197 if (this.n.text.length === 0) {
198 ret = text_range_bounds(this.n.el, 0, 0)
199 } else if (this.i === this.n.text.length) {
200 ret = text_range_bounds(this.n.el, this.i - 1, this.i)
205 ret = text_range_bounds(this.n.el, this.i, this.i + 1)
219 function new_cursor_position (args) {
221 ret = new CursorPosition(args)
228 // encode text so it can be safely placed inside an html attribute
229 enc_attr_regex = new RegExp('(&)|(")|(\u00A0)', 'g')
230 function enc_attr (txt) {
231 return txt.replace(enc_attr_regex, function(match, amp, quote) {
241 enc_text_regex = new RegExp('(&)|(<)|(\u00A0)', 'g')
242 function enc_text (txt) {
243 return txt.replace(enc_text_regex, function(match, amp, lt) {
271 // TODO make these always pretty-print (on the inside) like blocks
272 // TODO careful though: whitespace might get pushed to parent, which might be rendered
273 no_text_elements = { // these elements never contain text
283 function domify (doc, hash) {
284 var attrs, el, i, k, tag, v
287 if (tag === 'text') {
288 return document.createTextNode(attrs)
290 el = document.createElement(tag)
293 if (k === 'children') {
294 for (i = 0; i < v.length; i++) {
298 el.setAttribute(k, v)
307 '20': true, // capslock
309 '144': true, // numlock
311 '91': true // windows "start" key
313 // key codes: (valid on keydown, not keypress)
318 KEY_BACKSPACE = 8 // <--
319 KEY_DELETE = 46 // -->
328 control_key_codes = { // we react to these, but they aren't typing
345 function instantiate_tree (tree, parent) {
346 var c, i, k, remove, results, v
348 for (i = 0; i < tree.length; ++i) {
352 c.el = parent.ownerDocument.createTextNode(c.text)
353 parent.appendChild(c.el)
356 if (c.name === 'script' || c.name === 'object' || c.name === 'iframe' || c.name === 'link') {
357 // TODO put placeholders instead
361 // TODO create in correct namespace
362 c.el = parent.ownerDocument.createElement(c.name)
366 // FIXME if attr_whitelist[k]?
367 if (valid_attr_regex.test(k)) {
368 if (!js_attr_regex.test(k)) {
369 c.el.setAttribute(k, v)
373 parent.appendChild(c.el)
374 if (c.children.length) {
375 instantiate_tree(c.children, c.el)
380 for (i = 0; i < remove.length; i++) {
381 // FIXME this deletes the wrong node when siblings are removed
383 results.push(tree.splice(index, 1))
388 function traverse_tree (tree, cb) {
391 for (i = 0; i < tree.length; i++) {
397 if (c.children.length) {
398 done = traverse_tree(c.children, cb)
407 function first_cursor_position (tree) {
410 traverse_tree(tree, function(node, state) {
412 if (node.type === 'text') {
413 cursor = new_cursor_position({n: node, i: 0})
414 if (cursor != null) {
416 return true // done traversing
419 return false // not done traversing
421 return found // maybe null
424 // this will fail when text has non-locatable cursor positions (eg collapsed whitespace)
425 function find_next_cursor_position (tree, cursor) {
426 var found, new_cursor, state_before
427 if (cursor.n.type === 'text' && cursor.n.text.length > cursor.i) {
428 new_cursor = new_cursor_position({n: cursor.n, i: cursor.i + 1})
429 if (new_cursor != null) {
435 traverse_tree(tree, function(node, state) {
436 if (node.type === 'text' && state_before === false) {
437 new_cursor = new_cursor_position({n: node, i: 0})
438 if (new_cursor != null) {
440 return true // done traversing
443 if (node === cursor.n) {
446 return false // not done traversing
454 function last_cursor_position (tree) {
457 traverse_tree(tree, function(node) {
459 if (node.type === 'text') {
460 cursor = new_cursor_position({n: node, i: node.text.length})
461 if (cursor != null) {
465 return false // not done traversing
467 return found // maybe null
470 // this will fail when text has non-locatable cursor positions (eg collapsed whitespace)
471 function find_prev_cursor_position (tree, cursor) {
472 var found, found_prev, new_cursor
473 if (cursor.n.type === 'text' && cursor.i > 0) {
474 new_cursor = new_cursor_position({n: cursor.n, i: cursor.i - 1})
475 if (new_cursor != null) {
481 traverse_tree(tree, function(node) {
482 if (node === cursor.n) {
483 found = found_prev // maybe null
484 return true // done traversing
486 if (node.type === 'text') {
487 new_cursor = new_cursor_position({n: node, i: node.text.length})
488 if (new_cursor != null) {
489 found_prev = new_cursor
492 return false // not done traversing
494 return found // maybe null
497 function find_up_cursor_position (tree, cursor, ideal_x) {
498 var new_cursor, prev_cursor, target_y
500 // go prev until we're higher on y axis
501 while (new_cursor.y >= cursor.y) {
502 new_cursor = find_prev_cursor_position(tree, new_cursor)
503 if (new_cursor == null) {
507 // done early if we're already left of old cursor position
508 if (new_cursor.x <= ideal_x) {
511 target_y = new_cursor.y
512 // search leftward, until we find the closest position
513 // new_cursor is the prev-most position we've checked
514 // prev_cursor is the older value, so it's not as prev as new_cursor
515 while (new_cursor.x > ideal_x && new_cursor.y === target_y) {
516 prev_cursor = new_cursor
517 new_cursor = find_prev_cursor_position(tree, new_cursor)
518 if (new_cursor == null) {
522 // move cursor to prev_cursor or new_cursor
523 if (new_cursor != null) {
524 if (new_cursor.y === target_y) {
525 // both valid, and on the same line, use closest
526 if ((ideal_x - new_cursor.x) < (prev_cursor.x - ideal_x)) {
532 // new_cursor on wrong line, use prev_cursor
536 // can't go any further prev, use prev_cursor
541 function find_down_cursor_position (tree, cursor, ideal_x) {
542 var new_cursor, prev_cursor, target_y
544 // go next until we move on the y axis
545 while (new_cursor.y <= cursor.y) {
546 new_cursor = find_next_cursor_position(tree, new_cursor)
547 if (new_cursor == null) {
551 // done early if we're already right of old cursor position
552 if (new_cursor.x >= ideal_x) {
553 // this would be strange, but could happen due to runaround
556 target_y = new_cursor.y
557 // search rightward, until we find the closest position
558 // new_cursor is the next-most position we've checked
559 // prev_cursor is the older value, so it's not as next as new_cursor
560 while (new_cursor.x < ideal_x && new_cursor.y === target_y) {
561 prev_cursor = new_cursor
562 new_cursor = find_next_cursor_position(tree, new_cursor)
563 if (new_cursor == null) {
567 if (new_cursor != null) {
568 if (new_cursor.y === target_y) {
569 // both valid, and on the same line, use closest
570 if ((new_cursor.x - ideal_x) < (ideal_x - prev_cursor.x)) {
576 // new_cursor on wrong line, use prev_cursor
580 // can't go any further prev, use prev_cursor
585 function xy_to_cursor (tree, xy) {
586 var after, before, bounds, cur, guess_i, i, n, ret
587 for (i = 0; i < tree.length; i++) {
589 if (n.type === 'tag' || n.type === 'text') {
590 bounds = get_el_bounds(n.el)
591 if (xy.x < bounds.x) {
594 if (xy.x > bounds.x + bounds.w) {
597 if (xy.y < bounds.y) {
600 if (xy.y > bounds.y + bounds.h) {
603 if (n.children.length) {
604 ret = xy_to_cursor(n.children, xy)
609 if (n.type === 'text') {
610 // click is within bounding box that contains all text.
611 if (n.text.length === 0) {
612 ret = new_cursor_position({n: n, i: 0})
618 before = new_cursor_position({n: n, i: 0})
619 if (before == null) {
622 after = new_cursor_position({n: n, i: n.text.length})
626 if (xy.y < before.y + before.h && xy.x < before.x) {
627 // console.log 'before first char on first line'
630 if (xy.y > after.y && xy.x > after.x) {
631 // console.log 'after last char on last line'
634 if (xy.y < before.y) {
635 console.log("Warning: click in text bounding box but above first line")
636 continue // above first line (runaround?)
638 if (xy.y > after.y + after.h) {
639 console.log("Warning: click in text bounding box but below last line", xy.y, after.y, after.h)
640 continue // below last line (shouldn't happen?)
642 while (after.i - before.i > 1) {
643 guess_i = Math.round((before.i + after.i) / 2)
644 cur = new_cursor_position({n: n, i: guess_i})
646 console.log("error: failed to find cursor pixel location for", n, guess_i)
650 if (xy.y < cur.y || (xy.y <= cur.y + cur.h && xy.x < cur.x)) {
656 if (before == null) { // signals failure to find a cursor position
659 // which one is closest?
660 if (Math.abs(before.x - xy.x) < Math.abs(after.x - xy.x)) {
671 // browsers collapse these (html5 spec calls these "space characters")
672 function is_space_code (char_code) {
683 function is_space (chr) {
684 return is_space_code(chr.charCodeAt(0))
687 function tree_remove_empty_text_nodes (tree) {
688 var c, empties, i, j, n
690 traverse_tree(tree, function(n) {
691 if (n.type === 'text') {
692 if (n.text.length === 0) {
696 return false // not done traversing
698 for (i = 0; i < empties.length; i++) {
700 // don't completely empty the tree
701 if (tree.length === 1) {
702 if (tree[0].type === 'text') {
703 console.log("oop, leaving a blank node because it's the only thing")
707 n.el.parentNode.removeChild(n.el)
708 ref = n.parent.children
709 for (j = 0; j < ref.length; ++j) {
712 n.parent.children.splice(j, 1)
719 function PeachHTML5Editor (in_el, options) {
720 // Options: (all optional)
721 // editor_id: "id" attribute for outer-most element created by/for editor
722 // css_file: filename of a css file to style editable content
723 // on_init: callback for when the editable content is in place
724 var css, opt_fragment, outer_bounds, outer_iframe_style, outer_wrap
725 this.options = options != null ? options : {}
727 this.tree = null // array of Nodes, all editable content
728 this.tree_parent = null // this.tree is this.children. .el might === this.idoc.body
730 this.init_1_called = false // when iframes have loaded
731 this.outer_iframe // iframe to hold editor
732 this.outer_idoc // "document" object for this.outer_iframe
733 this.wrap2 = null // scrollbar is on this
734 this.wrap2_offset = null
735 this.wrap2_height = null // including padding
736 this.iframe = null // iframe to hold editable content
737 this.idoc = null // "document" object for this.iframe
739 this.cursor_el = null
740 this.cursor_visible = false
741 this.cursor_ideal_x = null
742 this.poll_for_blur_timeout = null
743 opt_fragment = this.options.fragment != null ? this.options.fragment : true
744 this.parser_opts = {}
746 this.parser_opts.fragment = 'body'
748 this.outer_iframe = domify(document, {iframe: {}})
749 outer_iframe_style = 'border: none !important; margin: 0 !important; padding: 0 !important; height: 100% !important; width: 100% !important;'
750 if (this.options.editor_id != null) {
751 this.outer_iframe.setAttribute('id', this.options.editor_id)
753 this.outer_iframe.onload = (function(_this) {
756 _this.outer_idoc = _this.outer_iframe.contentDocument
757 icss = domify(_this.outer_idoc, { style: { children: [
758 domify(_this.outer_idoc, {text: css})
760 _this.outer_idoc.head.appendChild(icss)
761 _this.iframe = domify(_this.outer_idoc, {iframe: {sandbox: 'allow-same-origin allow-scripts'}})
762 _this.iframe.onload = function() {
763 return _this.init_1()
765 timeout(200, function() { // firefox never fires this onload
766 if (!_this.init_1_called) {
767 return _this.init_1()
770 _this.outer_idoc.body.appendChild(
771 domify(_this.outer_idoc, {div: {id: 'wrap1', children: [
772 domify(_this.outer_idoc, {div: {
773 style: "position: absolute; top: 0; left: 1px; font-size: 10px",
774 children: [domify(_this.outer_idoc, {text: "Peach HTML5 Editor"})]
776 _this.wrap2 = domify(_this.outer_idoc, {div: {id: 'wrap2', children: [
777 domify(_this.outer_idoc, {div: {id: 'wrap3', children: [
779 _this.overlay = domify(_this.outer_idoc, { div: { id: 'overlay' }})
786 outer_wrap = domify(document, {div: {"class": 'peach_html5_editor' }})
787 this.in_el.parentNode.appendChild(outer_wrap)
788 outer_bounds = get_el_bounds(outer_wrap)
789 if (outer_bounds.w < 300) {
792 if (outer_bounds.h < 300) {
795 outer_iframe_style += "width: " + outer_bounds.w + "px; height: " + outer_bounds.h + "px;"
796 this.outer_iframe.setAttribute('style', outer_iframe_style)
797 css = this.generate_outer_css({w: outer_bounds.w, h: outer_bounds.h})
798 outer_wrap.appendChild(this.outer_iframe)
800 PeachHTML5Editor.prototype.init_1 = function() { // this.iframe has loaded (but not it's css)
802 this.idoc = this.iframe.contentDocument
803 this.init_1_called = true
804 // chromium doesn't resolve relative urls as though they were at the same domain
805 // so add a <base> tag
806 this.idoc.head.appendChild(domify(this.idoc, {base: {href: this_url_sans_path()}}))
807 // don't let @iframe have scrollbars
808 this.idoc.head.appendChild(domify(this.idoc, {style: {children: [
809 domify(this.idoc, {text: "body { overflow: hidden; }"})
811 if (this.options.css_file) {
812 istyle = domify(this.idoc, {link: {rel: 'stylesheet', href: this.options.css_file}})
813 istyle.onload = (function(_this) {
815 return _this.init_2()
818 this.idoc.head.appendChild(istyle)
823 PeachHTML5Editor.prototype.init_2 = function() { // this.iframe and it's css file(s) are ready
824 this.overlay.onclick = (function(_this) {
827 return event_return(e, _this.onclick(e))
830 this.overlay.ondoubleclick = (function(_this) {
833 return event_return(e, _this.ondoubleclick(e))
836 this.outer_idoc.body.onkeyup = (function(_this) {
839 return event_return(e, _this.onkeyup(e))
842 this.outer_idoc.body.onkeydown = (function(_this) {
845 return event_return(e, _this.onkeydown(e))
848 this.outer_idoc.body.onkeypress = (function(_this) {
851 return event_return(e, _this.onkeypress(e))
854 this.load_html(this.in_el.value)
855 if (this.options.on_init != null) {
856 return this.options.on_init()
859 PeachHTML5Editor.prototype.generate_outer_css = function(args) {
860 var frame_width, h, inner_padding, occupy, ret, w
861 w = args.w != null ? args.w : 300
862 h = args.h != null ? args.h : 300
863 inner_padding = args.inner_padding != null ? args.inner_padding : overlay_padding
864 frame_width = args.frame_width != null ? args.frame_width : inner_padding
865 occupy = function(left, top, right, bottom) {
872 if (bottom == null) {
877 return Math.max(left, top, right, bottom)
883 ret += 'color: black;'
884 ret += 'background: white;'
887 ret += "border: " + (occupy(1)) + "px solid black;"
888 ret += "padding: " + (occupy(frame_width)) + "px;"
891 ret += "border: " + (occupy(1)) + "px solid black;"
892 this.wrap2_height = h // including padding because padding scrolls
893 ret += "padding: " + (occupy(inner_padding)) + "px;"
894 ret += "padding-right: " + (inner_padding + occupy(0, 0, 15, 0)) + "px;"
895 ret += "width: " + w + "px;"
896 ret += "height: " + h + "px;"
897 ret += 'overflow-x: hidden;'
898 ret += 'overflow-y: scroll;'
901 ret += 'position: relative;'
902 ret += "width: " + w + "px;"
903 ret += "min-height: " + h + "px;"
906 ret += 'box-sizing: border-box;'
908 ret += 'border: none;'
910 ret += "width: " + w + "px;"
911 //ret += "height: " + h + "px;" // height auto-set when content set/changed
912 ret += '-ms-user-select: none;'
913 ret += '-webkit-user-select: none;'
914 ret += '-moz-user-select: none;'
915 ret += 'user-select: none;'
918 ret += 'position: absolute;'
919 ret += "left: -" + inner_padding + "px;"
920 ret += "top: -" + inner_padding + "px;"
921 ret += "right: -" + inner_padding + "px;"
922 ret += "bottom: -" + inner_padding + "px;"
923 ret += 'overflow: hidden;'
926 ret += 'position: absolute;'
927 ret += 'background: rgba(100,100,100,0.2);'
930 ret += 'position: absolute;'
932 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));'
933 ret += 'background-size: 200% 200%;'
934 ret += '-webkit-animation: blink 1s linear normal infinite;'
935 ret += 'animation: blink 1s linear normal infinite;'
937 ret += '@-webkit-keyframes blink {'
938 ret += '0%{background-position:0% 0%}'
939 ret += '100%{background-position:0% -100%}'
941 ret += '@keyframes blink { '
942 ret += '0%{background-position:0% 0%}'
943 ret += '100%{background-position:0% -100%}'
947 ret += 'position: absolute;'
948 ret += 'border: 1px solid rgba(0,0,0,0.1);'
949 ret += 'outline: 1px solid rgba(255,255,255,0.1);' // in case there's a black background
952 ret += 'z-index: 10;'
953 ret += 'position: absolute;'
954 ret += 'font-size: 8px;'
955 ret += 'white-space: pre;'
956 ret += 'background: rgba(255,255,255,0.4);'
957 ret += '-ms-user-select: none;'
958 ret += '-webkit-user-select: none;'
959 ret += '-moz-user-select: none;'
960 ret += 'user-select: none;'
964 PeachHTML5Editor.prototype.overlay_event_to_inner_xy = function(e) {
966 if (this.wrap2_offset == null) {
967 this.wrap2_offset = get_el_bounds(this.wrap2)
969 x = e.pageX - overlay_padding
970 y = e.pageY - overlay_padding + this.wrap2.scrollTop
972 x: x - this.wrap2_offset.x,
973 y: y - this.wrap2_offset.y
976 PeachHTML5Editor.prototype.onclick = function(e) {
978 xy = this.overlay_event_to_inner_xy(e)
979 new_cursor = xy_to_cursor(this.tree, xy)
980 if (new_cursor != null) {
981 this.move_cursor(new_cursor)
987 PeachHTML5Editor.prototype.ondoubleclick = function(e) {
990 PeachHTML5Editor.prototype.onkeyup = function(e) {
994 if (ignore_key_codes[e.keyCode] != null) {
997 //return false if control_key_codes[e.keyCode] != null
999 PeachHTML5Editor.prototype.onkeydown = function(e) {
1000 var new_cursor, saved_ideal_x
1004 if (ignore_key_codes[e.keyCode] != null) {
1007 //return false if control_key_codes[e.keyCode] != null
1008 switch (e.keyCode) {
1010 if (this.cursor != null) {
1011 new_cursor = find_prev_cursor_position(this.tree, this.cursor)
1013 new_cursor = first_cursor_position(this.tree)
1015 if (new_cursor != null) {
1016 this.move_cursor(new_cursor)
1020 if (this.cursor != null) {
1021 new_cursor = find_next_cursor_position(this.tree, this.cursor)
1023 new_cursor = last_cursor_position(this.tree)
1025 if (new_cursor != null) {
1026 this.move_cursor(new_cursor)
1030 if (this.cursor != null) {
1031 new_cursor = find_up_cursor_position(this.tree, this.cursor, this.cursor_ideal_x)
1032 if (new_cursor != null) {
1033 saved_ideal_x = this.cursor_ideal_x
1034 this.move_cursor(new_cursor)
1035 this.cursor_ideal_x = saved_ideal_x
1038 // move cursor to first position in document
1039 new_cursor = first_cursor_position(this.tree)
1040 if (new_cursor != null) {
1041 this.move_cursor(new_cursor)
1046 if (this.cursor != null) {
1047 new_cursor = find_down_cursor_position(this.tree, this.cursor, this.cursor_ideal_x)
1048 if (new_cursor != null) {
1049 saved_ideal_x = this.cursor_ideal_x
1050 this.move_cursor(new_cursor)
1051 this.cursor_ideal_x = saved_ideal_x
1054 // move cursor to first position in document
1055 new_cursor = last_cursor_position(this.tree)
1056 if (new_cursor != null) {
1057 this.move_cursor(new_cursor)
1062 new_cursor = last_cursor_position(this.tree)
1063 if (new_cursor != null) {
1064 this.move_cursor(new_cursor)
1068 this.on_key_backspace(e)
1071 if (this.cursor == null) {
1074 new_cursor = find_next_cursor_position(this.tree, {n: this.cursor.n, i: this.cursor.i})
1075 // try moving cursor right and then running backspace code
1076 // TODO replace this hack with a real implementation
1077 if (new_cursor != null) {
1078 // try to detect common case where cursor goes inside an block,
1079 // but doesn't pass a character (and advance one more in that case)
1080 if (new_cursor.n !== this.cursor.n && new_cursor.i === 0) {
1081 if (new_cursor.n.type === 'text' && new_cursor.n.text.length > 0) {
1082 if (new_cursor.n.parent != null) {
1083 if (!this.is_display_block(new_cursor.n.parent)) {
1084 // FIXME should test run sibling
1085 new_cursor = new_cursor_position({n: new_cursor.n, i: new_cursor.i + 1})
1091 if (new_cursor != null) {
1092 if (new_cursor.n !== this.cursor.n || new_cursor.i !== this.cursor.i) {
1093 this.move_cursor(new_cursor)
1094 this.on_key_backspace(e)
1099 this.on_key_enter(e)
1105 new_cursor = first_cursor_position(this.tree)
1106 if (new_cursor != null) {
1107 this.move_cursor(new_cursor)
1113 this.on_page_up_key(e)
1116 this.on_page_down_key(e)
1122 PeachHTML5Editor.prototype.onkeypress = function(e) {
1123 var char, new_cursor
1127 if (ignore_key_codes[e.keyCode] != null) {
1130 char = e.charCode != null ? e.charCode : e.keyCode
1131 if (char && (this.cursor != null)) {
1132 char = String.fromCharCode(char)
1133 this.insert_character(this.cursor.n, this.cursor.i, char)
1134 this.text_cleanup(this.cursor.n)
1136 new_cursor = new_cursor_position({n: this.cursor.n, i: this.cursor.i + 1})
1138 this.move_cursor(new_cursor)
1140 console.log("ERROR: couldn't find cursor position after insert")
1146 PeachHTML5Editor.prototype.on_key_enter = function(e) { // enter key pressed
1147 var before, cur_block, i, n, new_cursor, new_node, new_text, parent_el, pc
1148 if (!this.cursor_visible) {
1151 cur_block = this.cursor.n
1153 if (cur_block.type === 'tag') {
1154 if (is_display_block(cur_block.el)) {
1158 if (cur_block.parent == null) {
1161 cur_block = cur_block.parent
1163 // find array to insert new element into
1164 if (cur_block.parent === this.tree_parent) {
1165 parent_el = this.idoc.body
1168 parent_el = cur_block.parent.el
1169 pc = cur_block.parent.children
1171 for (i = 0; i < pc.length; ++i) {
1173 if (n === cur_block) {
1177 i += 1 // we want to be after it
1178 if (i < pc.length) {
1183 // TODO if content after cursor
1184 // TODO new block is empty
1185 new_text = new peach_parser.Node('text', {text: ' '})
1186 new_node = new peach_parser.Node('tag', {
1188 parent: cur_block.parent,
1189 attrs: {style: 'white-space: pre-wrap'},
1190 children: [new_text]
1192 new_text.parent = new_node
1193 new_text.el = domify(this.idoc, {text: ' '})
1194 new_node.el = domify(this.idoc, {p: {style: 'white-space: pre-wrap', children: [new_text.el]}})
1195 pc.splice(i, 0, new_node)
1196 parent_el.insertBefore(new_node.el, before)
1198 new_cursor = new_cursor_position({
1202 if (new_cursor == null) {
1205 this.move_cursor(new_cursor)
1206 // TODO move content past cursor into this new block
1209 // unlike the global function, this takes a Node, not an element
1210 PeachHTML5Editor.prototype.is_display_block = function(n) {
1211 // TODO stop calling global function, merge it into here, use iframe's window object
1212 if (n.type !== 'tag') {
1215 return is_display_block(n.el)
1217 PeachHTML5Editor.prototype.find_block_parent = function(n) {
1223 if (this.is_display_block(n)) {
1226 if (n === this.tree_parent) {
1232 // return a flat array of nodes (text, <br>, and later also inline-block)
1233 // that are flowing/wrapping together. n can be the containing block, or any
1234 // element inside it.
1235 PeachHTML5Editor.prototype.get_text_run = function(n) {
1238 if (this.is_display_block(n)) {
1241 block = this.find_block_parent(n)
1242 if (block == null) {
1246 traverse_tree(block.children, (function(_this) { return function(n) {
1248 if (n.type === 'text') {
1250 } else if (n.type === 'tag') {
1251 if (n.name === 'br') {
1254 disp = _this.computed_style(n)
1255 if (disp === 'inline-block') {
1260 return false // not done traversing
1264 PeachHTML5Editor.prototype.node_is_decendant = function(young, old) {
1265 while (young != null && young !== this.tree_parent) {
1266 if (young === old) {
1269 young = young.parent
1273 // helper for on_key_backspace
1274 PeachHTML5Editor.prototype._merge_left = function(state) {
1276 // the node prev to n was not prev to it a moment ago, merge with it if reasonable
1277 pi = state.n.parent.children.indexOf(state.n)
1279 prev = state.n.parent.children[pi - 1]
1280 if (prev.type === 'text') {
1281 state.i = prev.text.length
1282 prev.text = prev.el.textContent = prev.text + state.n.text
1283 this.remove_node(state.n)
1285 state.changed = true
1286 state.moved_cursor = true
1289 // else // TODO merge possible consecutive matching inline tags at @cursor
1292 // helper for on_key_backspace
1293 // remove n from the dom, also remove its inline parents that are emptied by removing n
1294 PeachHTML5Editor.prototype._backspace_node_helper = function(n, run, run_i) {
1297 run = this.get_text_run(n)
1299 if (run_i == null) {
1300 run_i = run.indexOf(n)
1302 block = this.find_block_parent(n)
1305 while (n != null && n !== block) {
1306 // bail if the previous node in this run is also inside the same parent
1308 if (this.node_is_decendant(run[run_i - 1], n)) {
1312 // bail if the next node in this run is also inside the same parent
1313 if (run_i + 1 < run.length) {
1314 if (this.node_is_decendant(run[run_i + 1], n)) {
1318 // move any sibling nodes to parent. These nodes are not in the text run
1319 while (n.children.length > 0) {
1320 this.move_node(n.children[0], n.parent, n)
1322 // remove (now completely empty) inline parent
1324 // proceed to outer parent
1328 PeachHTML5Editor.prototype.on_key_backspace = function(e) {
1329 var block, changed, merge_state, n, ncb, need_text_cleanup, new_cursor, pcb, post, pre, prev, prev_cursor, run, run_i
1330 if (this.cursor == null) {
1336 if (this.cursor.i === 0) { // cursor is at start of text node
1338 run = this.get_text_run(this.cursor.n)
1340 run_i = run.indexOf(this.cursor.n)
1341 if (run_i === 0) { // if at start of text run
1342 block = this.find_block_parent(this.cursor.n)
1343 prev_cursor = find_prev_cursor_position(this.tree, {n: this.cursor.n, i: 0})
1344 if (prev_cursor === null) { // if in first text run of document
1345 // do nothing (there's nothing text-like to the left of the cursor)
1348 // else merge with prev/outer text run
1349 pcb = this.find_block_parent(prev_cursor.n)
1350 while (block.children.length > 0) {
1351 this.move_node(block.children[0], pcb)
1353 this.remove_node(block)
1354 // merge possible consecutive text nodes at @cursor
1355 merge_state = {n: this.cursor.n}
1356 this._merge_left(merge_state)
1357 this.text_cleanup(merge_state.n)
1358 new_cursor = new_cursor_position({n: merge_state.n, i: merge_state.i})
1359 } else { // at start of text node, but not start of text run
1360 prev = run[run_i - 1]
1361 if (prev.type === 'text') { // if previous in text run is text
1362 if (prev.text.length === 1) { // if emptying prev (in text run)
1363 this._backspace_node_helper(prev, run, run_i)
1364 merge_state = {n: this.cursor.n, i: this.cursor.i}
1365 this._merge_left(merge_state)
1366 this.text_cleanup(merge_state.n)
1367 new_cursor = new_cursor_position({n: merge_state.n, i: merge_state.i})
1368 } else { // prev in run is text with muliple chars
1369 // delete last character in prev
1370 prev.text = prev.text.substr(0, prev.text.length - 1)
1371 prev.el.textContent = prev.text
1372 this.text_cleanup(this.cursor.n)
1373 new_cursor = new_cursor_position({n: this.cursor.n, i: this.cursor.i})
1375 } else if (prev.name === 'br' || prev.name === 'hr') {
1376 this._backspace_node_helper(prev, run, run_i)
1377 merge_state = {n: this.cursor.n, i: this.cursor.i}
1378 this._merge_left(merge_state)
1379 this.text_cleanup(merge_state.n)
1380 new_cursor = new_cursor_position({n: merge_state.n, i: merge_state.i})
1382 // FIXME implement this:
1383 // else // if prev (in run) is inline-block
1384 // if that inline-block has text in it
1385 // delete last char in prev inlineblock
1386 // if that empties it
1390 // move cursor inside
1392 // delete prev (inline) block
1394 // auto-delete this @cursor.parent(s) if this empties them
1396 } else { // cursor is not at start of text node
1398 run = this.get_text_run(this.cursor.n)
1400 if (this.cursor.n.text.length === 1) { // if emptying text node
1401 if (run.length === 1) { // if emptying text run (of text/br/hr/inline-block)
1402 // remove inline-parents of @cursor.n
1403 block = this.find_block_parent(this.cursor.n)
1405 n = this.cursor.n.parent
1406 // note: this doesn't use _backspace_node_helper because:
1407 // 1. we don't want to delete the target node (we're replacing it's contents)
1408 // 2. we want to track whether anything was removed
1409 // 3. we know already know there's no other text from this run anywhere
1410 while (n && n !== block) {
1412 while (n.children.length > 0) {
1413 this.move_node(n.children[0], n.parent, n)
1418 // replace @cursor.n with a single (preserved) space
1419 if (this.cursor.n.text !== ' ') {
1421 this.cursor.n.text = this.cursor.n.el.textContent = ' '
1424 this.text_cleanup(this.cursor.n)
1426 // place the cursor to the left of that space
1427 new_cursor = new_cursor_position({n: this.cursor.n, i: 0})
1428 } else { // emptying a text node (but not a whole text run)
1429 // figure out where cursor should land
1430 block = this.find_block_parent(this.cursor.n)
1431 new_cursor = find_prev_cursor_position(this.tree, {n: this.cursor.n, i: 0})
1432 ncb = this.find_block_parent(new_cursor.n)
1433 if (ncb !== block) {
1434 new_cursor = find_next_cursor_position(this.tree, {n: this.cursor.n, i: 1})
1436 // delete text node and cleanup emptied parents
1437 run_i = run.indexOf(this.cursor.n)
1438 this._backspace_node_helper(this.cursor.n, run, run_i)
1439 // see if new adjacent siblings should merge
1440 // TODO make smarter
1441 if (run_i > 0 && run_i + 1 < run.length) {
1442 if (run[run_i - 1].type === 'text' && run[run_i + 1].type === 'text') {
1443 merge_state = {n: run[run_i + 1]}
1444 this._merge_left(merge_state)
1445 if (merge_state.moved_cursor) {
1446 new_cursor = merge_state
1450 // update whitespace preservation
1451 this.text_cleanup(block)
1452 // update cursor x/y in case things moved around
1453 if (new_cursor != null) {
1454 if (new_cursor.n.el.parentNode) { // still in dom after cleanup
1455 new_cursor = new_cursor_position({n: new_cursor.n, i: new_cursor.i})
1461 } else { // there's a char left of cursor that we can delete without emptying anything
1463 need_text_cleanup = true
1464 if (this.cursor.i > 1 && this.cursor.i < this.cursor.n.text.length) {
1465 pre = this.cursor.n.text.substr(this.cursor.i - 2, 3)
1466 post = pre.charAt(0) + pre.charAt(2)
1467 if (str_has_ws_run(pre) === str_has_ws_run(post)) {
1468 need_text_cleanup = false
1471 this.remove_character(this.cursor.n, this.cursor.i - 1)
1472 // call text_cleanup if whe created/removed a whitespace run
1473 if (need_text_cleanup) {
1474 this.text_cleanup(this.cursor.n)
1476 new_cursor = new_cursor_position({n: this.cursor.n, i: this.cursor.i - 1})
1479 // mark document changed and move the cursor
1480 if (changed != null) {
1483 if (new_cursor != null) {
1484 this.move_cursor(new_cursor)
1489 PeachHTML5Editor.prototype.on_page_up_key = function(e) {
1490 var new_cursor, screen_y, scroll_amount
1491 if (this.wrap2.scrollTop === 0) {
1492 if (this.cursor == null) {
1495 new_cursor = first_cursor_position(this.tree)
1496 if (new_cursor != null) {
1497 if (new_cursor.n !== this.cursor.n || new_cursor.i !== this.cursor.i) {
1498 this.move_cursor(new_cursor)
1503 if (this.cursor != null) {
1504 screen_y = this.cursor.y - this.wrap2.scrollTop
1506 scroll_amount = this.wrap2_height - breathing_room
1507 this.wrap2.scrollTop = Math.max(0, this.wrap2.scrollTop - scroll_amount)
1508 if (this.cursor != null) {
1509 return this.move_cursor_into_view(screen_y + this.wrap2.scrollTop)
1512 PeachHTML5Editor.prototype.on_page_down_key = function(e) {
1513 var lowest_scrollpos, new_cursor, screen_y, scroll_amount
1514 lowest_scrollpos = this.wrap2.scrollHeight - this.wrap2_height
1515 if (this.wrap2.scrollTop === lowest_scrollpos) {
1516 if (this.cursor == null) {
1519 new_cursor = last_cursor_position(this.tree)
1520 if (new_cursor != null) {
1521 if (new_cursor.n !== this.cursor.n || new_cursor.i !== this.cursor.i) {
1522 this.move_cursor(new_cursor)
1527 if (this.cursor != null) {
1528 screen_y = this.cursor.y - this.wrap2.scrollTop
1530 scroll_amount = this.wrap2_height - breathing_room
1531 this.wrap2.scrollTop = Math.min(lowest_scrollpos, this.wrap2.scrollTop + scroll_amount)
1532 if (this.cursor != null) {
1533 this.move_cursor_into_view(screen_y + this.wrap2.scrollTop)
1536 PeachHTML5Editor.prototype.move_cursor_into_view = function(y_target) {
1537 var cur, far_enough, finder, new_cursor, saved_ideal_x, was, y_max, y_min
1538 if (y_target === this.cursor.y) {
1542 y_min = this.wrap2.scrollTop
1543 if (this.wrap2.scrollTop !== 0) {
1544 y_min += breathing_room
1546 y_max = this.wrap2.scrollTop + this.wrap2_height
1547 if (this.wrap2.scrollTop !== this.wrap2.scrollHeight - this.wrap2_height) { // downmost
1548 y_max -= breathing_room
1550 y_target = Math.min(y_target, y_max)
1551 y_target = Math.max(y_target, y_min)
1552 if (y_target < this.cursor.y) {
1553 finder = find_up_cursor_position
1554 far_enough = function(cur, target_y) {
1555 return cur.y + cur.h <= target_y
1558 finder = find_down_cursor_position
1559 far_enough = function(cur, y_target) {
1560 return cur.y >= y_target
1564 cur = finder(this.tree, was, this.cursor_ideal_x)
1568 if (far_enough(cur, y_target)) {
1573 if (was === this.cursor) {
1577 if (was.y + was.h > y_max) {
1579 } else if (was.y < y_min) {
1584 if (cur.y + cur.h > y_max) {
1586 } else if (cur.y < y_min) {
1590 if ((cur != null) && (was != null)) {
1591 // both valid, pick best
1592 if (cur.y < y_min) {
1594 } else if (was.y + was.h > y_max) {
1596 } else if (cur.y - y_target < y_target - was.y) {
1602 new_cursor = was != null ? was : cur
1604 if (new_cursor != null) {
1605 saved_ideal_x = this.cursor_ideal_x
1606 this.move_cursor(new_cursor)
1607 this.cursor_ideal_x = saved_ideal_x
1610 // remove all the editable content (and cursor, overlays, etc)
1611 PeachHTML5Editor.prototype.clear_dom = function() {
1612 while (this.idoc.body.childNodes.length) {
1613 this.idoc.body.removeChild(this.idoc.body.childNodes[0])
1617 PeachHTML5Editor.prototype.load_html = function(html) {
1618 this.tree = peach_parser(html, this.parser_opts)
1619 if (this.tree[0] == null ? true : this.tree[0].parent == null) {
1620 this.tree = peach_parser('<p style="white-space: pre-wrap"> </p>', this.parser_opts)
1622 this.tree_parent = this.tree[0].parent
1623 this.tree_parent.el = this.idoc.body
1625 instantiate_tree(this.tree, this.tree_parent.el)
1626 this.collapse_whitespace(this.tree)
1627 return this.changed()
1629 PeachHTML5Editor.prototype.changed = function() {
1630 this.in_el.onchange = null
1631 this.in_el.value = this.pretty_html(this.tree)
1632 this.in_el.onchange = (function(_this) { return function() {
1633 return _this.load_html(_this.in_el.value)
1635 return this.adjust_iframe_height()
1637 PeachHTML5Editor.prototype.adjust_iframe_height = function() {
1639 s = this.wrap2.scrollTop
1640 // when the content gets shorter, the idoc's body tag will continue to
1641 // report the old (too big) height in Chrome. The workaround is to
1642 // shrink the iframe before the content height:
1643 this.iframe.style.height = "10px"
1644 h = parseInt(this.idoc.body.scrollHeight, 10)
1645 this.iframe.style.height = h + "px"
1646 return this.wrap2.scrollTop = s
1648 // true if n is text node with only one caracter, and the only child of a tag
1649 PeachHTML5Editor.prototype.is_only_char_in_tag = function(n, i) {
1650 if (n.type !== 'text') {
1653 if (n.text.length !== 1) {
1656 if (n.parent === this.tree_parent) {
1659 if (n.parent.children.length !== 1) {
1664 // true if n is text node with just a space in it, and the only child of a tag
1665 PeachHTML5Editor.prototype.is_lone_space = function(n, i) {
1666 if (n.type !== 'text') {
1669 if (n.text !== ' ') {
1672 if (n.parent === this.tree_parent) {
1675 if (n.parent.children.length !== 1) {
1680 // detect special case: typing before a space that's the only thing in a block/doc
1681 // reason: enter key creates blocks with just a space in them
1682 PeachHTML5Editor.prototype.insert_should_replace = function(n, i) {
1686 if (n.text !== ' ') {
1689 if (n.parent === this.tree_parent) {
1692 if (n.parent.children.length === 1) {
1693 if (n.parent.children[0] === n) {
1700 // WARNING: after calling this, you MUST call changed() and text_cleanup()
1701 PeachHTML5Editor.prototype.insert_character = function(n, i, char) {
1702 if (n.parent === this.tree_parent) {
1703 // FIXME implement text nodes at top level
1706 // insert the character
1707 if (this.insert_should_replace(n, i)) {
1709 } else if (i === 0) {
1710 n.text = char + n.text
1711 } else if (i === n.text.length) {
1714 n.text = n.text.substr(0, i) + char + n.text.substr(i)
1716 return n.el.nodeValue = n.text
1718 // WARNING: after calling this, you MUST call changed() and text_cleanup()
1719 PeachHTML5Editor.prototype.remove_character = function(n, i) {
1720 n.text = n.text.substr(0, i) + n.text.substr(i + 1)
1721 return n.el.nodeValue = n.text
1723 PeachHTML5Editor.prototype.computed_style = function(n, prop) {
1725 if (n.type === 'text') {
1728 style = this.iframe.contentWindow.getComputedStyle(n.el, null)
1729 return style.getPropertyValue(prop)
1731 // returns the new white-space value that will preserve spaces for node n
1732 PeachHTML5Editor.prototype.preserve_space = function(n, ideal_target) {
1734 if (n.type === 'text') {
1739 while (target !== ideal_target && !target.el.style.whiteSpace) {
1740 if (target == null) {
1741 console.log("bug #967123")
1744 target = target.parent
1746 ws = (ref = ws_props[target.el.style.whiteSpace]) != null ? ref.to_preserve : null
1750 target.el.style.whiteSpace = ws
1751 this.update_style_from_el(target)
1754 PeachHTML5Editor.prototype.update_style_from_el = function(n) {
1756 style = n.el.getAttribute('style')
1757 if (style != null) {
1758 return n.attrs.style = style
1760 if (n.attrs.style != null) {
1761 return delete n.attrs.style
1765 // remove whitespace that would be trimmed
1766 // replace whitespace that would collapse with a single space
1767 // FIXME remove whitespace from after <br> (but not before)
1769 // check computed white-space prop on txt parents
1770 // batch replace txt node contents (ie don't loop for each char)
1771 PeachHTML5Editor.prototype.collapse_whitespace = function(tree) {
1772 var cur, cur_i, cur_px, first, iterate, next, next_i, next_pos, next_px, operate, pos, prev, prev_i, prev_pos, prev_px, queue, remove, removed_char, replace_with_space
1776 prev = cur = next = null
1777 prev_i = cur_i = next_i = 0
1778 prev_pos = pos = next_pos = null
1779 prev_px = cur_px = next_px = null
1783 tree_remove_empty_text_nodes(tree)
1785 iterate = function(tree, cb) {
1786 var advance, block, i, j, n
1787 for (j = 0; j < tree.length; j++) {
1789 if (n.type === 'text') {
1791 while (i < n.text.length) { // don't foreach, cb might remove chars
1798 if (n.type === 'tag') {
1799 block = is_display_block(n.el)
1803 if (n.children.length > 0) {
1804 iterate(n.children, cb)
1813 remove = function(undo) {
1815 cur.el.textContent = cur.text = (cur.text.substr(0, cur_i)) + removed_char + (cur.text.substr(cur_i))
1816 if (next === cur) { // in same text node
1821 removed_char = cur.text.charAt(cur_i)
1822 cur.el.textContent = cur.text = (cur.text.substr(0, cur_i)) + (cur.text.substr(cur_i + 1))
1823 if (next === cur) { // in same text node
1825 throw "how is this possible?"
1832 replace_with_space = function(undo) {
1834 cur.text = (cur.text.substr(0, cur_i)) + removed_char + (cur.text.substr(cur_i + 1))
1835 cur.el.textContent = cur.text
1837 removed_char = cur.text.charAt(cur_i)
1838 if (removed_char !== ' ') {
1839 cur.text = (cur.text.substr(0, cur_i)) + ' ' + (cur.text.substr(cur_i + 1))
1840 cur.el.textContent = cur.text
1845 // return true if cur was removed from the dom (ie re-use same prev)
1846 operate = function() {
1847 // cur definitately set
1848 // prev and/or next might be null, indicating the start/end of a display:block
1849 var bounds, dbg, fixer, fixers, i, need_undo, new_next_px, new_prev_px, removed, undo_arg
1850 if (!is_space_code(cur.text.charCodeAt(cur_i))) {
1853 fixers = [remove, replace_with_space]
1854 // check for common case: single whitespace surrounded by non-whitespace chars
1855 if ((prev != null) && (next != null)) {
1856 if (!((is_space_code(prev.text.charCodeAt(prev_i))) || (is_space_code(next.text.charCodeAt(next_i))))) {
1857 dbg = cur.text.charCodeAt(cur_i)
1858 if (cur.text.charAt(cur_i) === ' ') {
1861 fixers = [replace_with_space]
1865 bounds = text_range_bounds(cur.el, cur_i, cur_i + 1)
1866 // consistent cases:
1867 // 1. zero rects returned by getClientRects() means collapsed space
1868 if (bounds === null) {
1871 // 2. width greater than zero means visible space
1873 // has bounds, don't try removing
1874 fixers = [replace_with_space]
1876 // now the weird edge cases...
1878 // firefox and chromium both report zero width for characters at the end
1879 // of a line where the text wraps (automatically, due to word-wrap) to
1880 // the next line. These do not appear to be distinguishable from
1881 // collapsed spaces via the range/bounds api, so...
1883 // remove it from the dom, and if prev or next moves, put it back.
1885 // this block (try changing it, put it back if something moves) is also
1886 // used on collapsable whitespace characters besides space. In this case
1887 // the character is replaced with a normal space character instead of
1889 if ((prev != null) && (prev_px == null)) {
1890 prev_px = new_cursor_position({n: prev, i: prev_i})
1892 if ((next != null) && (next_px == null)) {
1893 next_px = new_cursor_position({n: next, i: next_i})
1895 //if prev is null and next is null
1896 // parent_px = cur.parent.el.getBoundingClientRect()
1897 undo_arg = true // just for readabality
1899 for (i = 0; i < fixers.length; i++) {
1907 if (prev_px != null) {
1908 new_prev_px = new_cursor_position({n: prev, i: prev_i})
1909 if (new_prev_px != null) {
1910 if (new_prev_px.x !== prev_px.x || new_prev_px.y !== prev_px.y) {
1917 console.log("this shouldn't happen, we remove spaces that don't locate")
1920 if ((next != null) && !need_undo) {
1921 if (next_px != null) {
1922 new_next_px = new_cursor_position({n: next, i: next_i})
1923 if (new_next_px != null) {
1924 if (new_next_px.x !== next_px.x || new_next_px.y !== next_px.y) {
1932 // console.log "removing space becase space after it is collapsed"
1935 removed += fixer(undo_arg)
1944 // pass null at start/end of display:block
1945 queue = function(n, i) {
1946 var advance, removed
1953 // don't advance (to the next character next time) if we removed a
1954 // character from the same text node as ``next``, because doing so
1955 // renumbers the indexes in that string
1956 if (removed && cur === next) {
1973 iterate(tree, queue)
1976 tree_remove_empty_text_nodes(tree)
1978 // call this after you insert or remove inline nodes. It will:
1979 // merge consecutive text nodes
1980 // remove empty text nodes
1981 // adjust white-space property
1982 // note: this assumes that all whitespace in text nodes should be displayed
1983 // (ie not collapse or be trimmed) and will change the white-space property
1984 // as needed to achieve this.
1985 PeachHTML5Editor.prototype.text_cleanup = function(n) {
1986 var block, eats_start_sp, i, last, n_i, need_preserve, prev, prev_i, run, ws
1987 if (this.is_display_block(n)) {
1990 block = this.find_block_parent(n)
1991 if (block == null) {
1995 run = this.get_text_run(block)
1999 if (run.length > 1) {
2002 while (i < run.length) {
2004 if (prev.type === 'text' && n.type === 'text') {
2005 if (prev.parent === n.parent) {
2006 prev_i = n.parent.children.indexOf(prev)
2007 n_i = n.parent.children.indexOf(n)
2008 if (n_i === prev_i + 1) {
2009 prev.text = prev.text + n.text
2010 prev.el.textContent = prev.text
2013 continue // don't increment i or change prev
2021 // remove empty text nodes
2023 while (i < run.length) {
2025 if (n.type === 'text') {
2026 if (n.text === '') {
2028 // FIXME maybe remove parents recursively if this makes them empty
2030 continue // don't increment i
2035 // note: inline tags can have white-space:pre-line/etc
2036 // note: inline-blocks have their whitespace collapsed independantly of outer run
2037 // note: inline-blocks are treated like non-whitespace char even if empty
2038 if (block.el.style.whiteSpace != null) {
2039 ws = block.el.style.whiteSpace
2041 if (ws_props[ws].space) {
2042 if (ws_props[ws].to_collapse === 'normal') {
2043 block.el.style.whiteSpace = null
2045 block.el.style.whiteSpace = ws_props[ws].to_collapse
2047 this.update_style_from_el(block)
2051 // note: space after <br> colapses, but not space before
2052 // check for spaces that would collapse without help
2053 eats_start_sp = true // if the next node starts with space it collapses (unless pre)
2055 for (i = 0; i < run.length; ++i) {
2057 if (n.type === 'tag') {
2058 if (n.name === 'br') {
2059 eats_start_sp = true
2061 eats_start_sp = false
2064 need_preserve = false
2065 if (n.type !== 'text') {
2066 console.log("bug #232308")
2069 if (eats_start_sp) {
2070 if (is_space_code(n.text.charCodeAt(0))) {
2071 need_preserve = true
2074 if (!need_preserve) {
2075 need_preserve = multi_sp_regex.test(n.text)
2077 if (need_preserve) {
2078 // do we have it already?
2079 ws = this.computed_style(n, 'white-space') // FIXME implement this
2080 if (ws_props[ws] == null ? true : ws_props[ws].space == null) {
2081 // 2nd arg is ideal target for css rule
2082 ws = this.preserve_space(n, block)
2084 eats_start_sp = false
2086 if (is_space_code(n.text.charCodeAt(n.text.length - 1))) {
2087 ws = this.computed_style(n, 'white-space') // FIXME implement this
2088 if ((ref1 = ws_props[ws]) != null ? ref1.space : void 0) {
2089 eats_start_sp = false
2091 eats_start_sp = true
2094 eats_start_sp = false
2099 // check if text ends with a collapsable space
2100 if (run.length > 0) {
2101 last = run[run.length - 1]
2102 if (last.type === 'text') {
2103 if (eats_start_sp) {
2104 this.preserve_space(last, block)
2109 PeachHTML5Editor.prototype.css_clear = function(n, prop) {
2110 var css_delimiter_regex, i, styles
2111 if (n.attrs.style == null) {
2114 if (n.attrs.style === '') {
2117 css_delimiter_regex = new RegExp('\s*;\s*', 'g') // FIXME make this global
2118 styles = n.attrs.style.trim().split(css_delimiter)
2119 if (!(styles.length > 0)) {
2122 if (styles[styles.length - 1] === '') {
2124 if (!(styles.length > 0)) {
2129 while (i < styles.length) {
2130 if (styles[i].substr(0, 12) === 'white-space:') {
2137 // WARNING: after calling this one or more times, you MUST:
2138 // if it's inline: call @text_cleanup
2140 PeachHTML5Editor.prototype.remove_node = function(n) {
2142 i = n.parent.children.indexOf(n)
2144 throw "BUG #9187112313"
2146 n.el.parentNode.removeChild(n.el)
2147 n.parent.children.splice(i, 1)
2149 // remove a node from the tree/dom, insert into new_parent before insert_before?end
2150 // WARNING: after calling this one or more times, you MUST:
2151 // if it's inline: call @text_cleanup
2153 PeachHTML5Editor.prototype.move_node = function(n, new_parent, insert_before) {
2155 if (insert_before == null) {
2156 insert_before = null
2158 i = n.parent.children.indexOf(n)
2160 throw "Error: tried to remove node, but it's not in it's parents list of children"
2163 if (insert_before != null) {
2164 before_i = new_parent.children.indexOf(insert_before)
2166 throw "Error: tried to move a node to be before a non-existent node"
2168 insert_before = insert_before.el
2171 if (insert_before != null) {
2172 new_parent.el.insertBefore(n.el, insert_before)
2173 new_parent.children.splice(before_i, 0, n)
2175 new_parent.el.appendChild(n.el, insert_before)
2176 new_parent.children.push(n)
2178 n.parent = new_parent
2180 // remove it, forget where it was
2181 PeachHTML5Editor.prototype.kill_cursor = function() {
2182 if (this.cursor_visible) {
2183 this.cursor_el.parentNode.removeChild(this.cursor_el)
2184 this.cursor_visible = false
2189 PeachHTML5Editor.prototype.move_cursor = function(cursor) {
2191 this.cursor_ideal_x = cursor.x
2192 this.cursor = cursor
2193 if (!this.cursor_visible) {
2194 this.cursor_el = domify(this.outer_idoc, {div: { id: 'cursor'}})
2195 this.overlay.appendChild(this.cursor_el)
2196 this.cursor_visible = true
2198 this.cursor_el.style.left = (cursor.x + overlay_padding - 1) + "px"
2204 this.cursor_el.style.top = (cursor.y + overlay_padding + Math.round(height * .07)) + "px"
2205 this.cursor_el.style.height = (Math.round(height * 0.82)) + "px"
2206 this.annotate(cursor.n)
2207 this.scroll_into_view(cursor.y, height)
2209 PeachHTML5Editor.prototype.scroll_into_view = function(y, h) {
2210 var downmost, upmost
2214 y += overlay_padding // convert units from @idoc to @wrap2
2215 // very top of document
2216 if (y <= breathing_room) {
2217 this.wrap2.scrollTop = 0
2220 // very bottom of document
2221 if (y + h >= this.wrap2.scrollHeight - breathing_room) {
2222 this.wrap2.scrollTop = this.wrap2.scrollHeight - this.wrap2_height
2225 // The most scrolled up (lowest value for scrollTop) that would be OK
2226 upmost = y + h + breathing_room - this.wrap2_height
2227 upmost = Math.max(upmost, 0)
2228 // the most scrolled down (highest value for scrollTop) that would be OK
2229 downmost = y - breathing_room
2230 downmost = Math.min(downmost, this.wrap2.scrollHeight - this.wrap2_height)
2231 if (upmost > downmost) { // means h is too big to fit
2232 // scroll so top is visible
2233 this.wrap2.scrollTop = downmost
2236 if (this.wrap2.scrollTop < upmost) {
2237 this.wrap2.scrollTop = upmost
2240 if (this.wrap2.scrollTop > downmost) {
2241 this.wrap2.scrollTop = downmost
2245 PeachHTML5Editor.prototype.annotate = function(n) {
2246 var alpha, ann_box, ann_tag, bounds, prev_bounds
2247 while (this.matting.length > 0) {
2248 this.overlay.removeChild(this.matting[0])
2249 this.matting.shift()
2254 prev_bounds = {x: 0, y: 0, w: 0, h: 0}
2256 while (((n != null ? n.el : void 0) != null) && n !== this.tree_parent) {
2257 if (n.type === 'text') {
2261 bounds = get_el_bounds(n.el)
2262 if (bounds == null) {
2265 if (bounds.x === prev_bounds.x && bounds.y === prev_bounds.y && bounds.w === prev_bounds.w && bounds.h === prev_bounds.h) {
2269 ann_box = domify(this.outer_idoc, {div: {"class": 'ann_box', style: "left: " + (bounds.x - 1 + overlay_padding) + "px; top: " + (bounds.y - 2 + overlay_padding) + "px; width: " + bounds.w + "px; height: " + bounds.h + "px"}}) // outline: 1000px solid rgba(0,153,255,#{alpha});
2270 this.overlay.appendChild(ann_box)
2271 this.matting.push(ann_box)
2272 ann_tag = domify(this.outer_idoc, {div: {"class": 'ann_tag', style: "left: " + (bounds.x + 1 + overlay_padding) + "px; top: " + (bounds.y - 7 + overlay_padding) + "px",children: [domify(this.outer_idoc, {text: " " + n.name + " "})]}})
2273 this.overlay.appendChild(ann_tag)
2274 this.matting.push(ann_tag)
2279 PeachHTML5Editor.prototype.pretty_html = function(tree, indent, parent_flags) {
2280 var attr_keys, cs, display, float, i, j, in_flow, in_flow_block, inner_flags, is_block, is_br, is_text, k, n, next_indent, position, prev_in_flow_is_block, prev_in_flow_is_text, ret, visibility, want_nl, whitespace
2281 if (indent == null) {
2284 if (parent_flags == null) {
2292 want_nl = parent_flags.want_nl
2293 prev_in_flow_is_text = false
2294 prev_in_flow_is_block = false
2295 for (i = 0; i < tree.length; ++i) {
2303 if (n.name === 'br') {
2307 if (n.el.currentStyle != null) {
2308 cs = n.el.currentStyle
2309 whitespace = cs['white-space']
2310 display = cs['display']
2311 position = cs['position']
2313 visibility = cs['visibility']
2315 cs = this.iframe.contentWindow.getComputedStyle(n.el, null)
2316 whitespace = cs.getPropertyValue('white-space')
2317 display = cs.getPropertyValue('display')
2318 position = cs.getPropertyValue('position')
2319 float = cs.getPropertyValue('float')
2320 visibility = cs.getPropertyValue('visibility')
2322 if (n.name === 'textarea') {
2323 inner_flags.pre_ish = true
2325 inner_flags.pre_ish = whitespace.substr(0, 3) === 'pre'
2339 if ('display' === 'none') {
2342 switch (visibility) {
2356 inner_flags.block = false
2357 is_block = in_flow_block = false
2359 case 'inline-black':
2360 inner_flags.block = true
2361 is_block = in_flow_block = false
2364 inner_flags.block = true
2366 in_flow_block = in_flow
2373 in_flow_block = false
2375 default: // 'comment', 'doctype'
2379 in_flow_block = false
2381 // print whitespace if we can
2382 if (!parent_flags.pre_ish) {
2383 if (!(prev_in_flow_is_text && is_br)) {
2384 if ((i === 0 && parent_flags.block) || in_flow_block || prev_in_flow_is_block) {
2396 for (k in n.attrs) {
2397 attr_keys.unshift(k)
2400 for (j = 0; j < attr_keys.length; ++j) {
2403 if (n.attrs[k].length > 0) {
2404 ret += "=\"" + (enc_attr(n.attrs[k])) + "\""
2408 if (void_elements[n.name] == null) {
2409 if (inner_flags.block) {
2410 next_indent = indent + ' '
2412 next_indent = indent
2414 if (n.children.length) {
2415 ret += this.pretty_html(n.children, next_indent, inner_flags)
2417 ret += "</" + n.name + ">"
2421 ret += enc_text(n.text)
2424 ret += "<!--" + n.text + "-->" // TODO encode?
2427 ret += "<!DOCTYPE " + n.name
2428 if ((n.public_identifier != null) && n.public_identifier.length > 0) {
2429 ret += " \"" + n.public_identifier + "\""
2431 if ((n.system_identifier != null) && n.system_identifier.length > 0) {
2432 ret += " \"" + n.system_identifier + "\""
2438 prev_in_flow_is_text = is_text
2439 prev_in_flow_is_block = is_block || (in_flow && is_br)
2443 // output final newline if allowed
2444 if (!parent_flags.pre_ish) {
2445 if (prev_in_flow_is_block || parent_flags.block) {
2446 ret += "\n" + (indent.substr(4))
2452 PeachHTML5Editor.prototype.onblur = function() {
2455 PeachHTML5Editor.prototype.have_focus = function() {
2456 this.editor_is_focused = true
2457 this.poll_for_blur()
2459 PeachHTML5Editor.prototype.poll_for_blur = function() {
2460 if (this.poll_for_blur_timeout != null) {
2463 this.poll_for_blur_timeout = timeout(150, (function(_this) { return function() {
2464 next_frame(function() { // pause polling when browser knows we're not active/visible/etc.
2465 _this.poll_for_blur_timeout = null
2466 if (document.activeElement === _this.outer_iframe) {
2467 _this.poll_for_blur()
2469 _this.editor_is_focused = false
2476 window.peach_html5_editor = function() {
2477 // coffeescript: return new PeachHTML5Editor args...
2478 // compiles to below... there must be a better way
2480 args = 1 <= arguments.length ? slice.call(arguments, 0) : []
2481 return (function(func, args, ctor) {
2482 ctor.prototype = func.prototype
2483 var child = new ctor, result = func.apply(child, args)
2484 return Object(result) === result ? result : child
2485 })(PeachHTML5Editor, args, function(){})
2490 // test in browser: peach_html5_editor(document.getElementsByTagName('textarea')[0])