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 // html encoding for attributes
229 // encoding nbsp is not required, but hopefully it is useful
230 enc_attr_regex = new RegExp('(&)|(")|(\u00A0)', 'g')
231 function enc_attr (txt) {
232 return txt.replace(enc_attr_regex, function(match, amp, quote) {
242 // html encoding for text (does nothing to stop whitespace collapse)
243 // encoding nbsp is not required, but hopefully it is useful
244 enc_text_regex = new RegExp('(&)|(<)|(\u00A0)', 'g')
245 function enc_text (txt) {
246 return txt.replace(enc_text_regex, function(match, amp, lt) {
257 // no closing tag, cannot have children
276 // contents are not html encoded
277 plaintext_elements = {
288 // this does not pretty-print
289 function nodes_to_html (tree) {
290 var attr_keys, i, k, n, ret
292 for (i = 0; i < tree.length; ++i) {
300 if (n.attrs[k].length > 0) {
301 ret += "=\"" + (enc_attr(n.attrs[k])) + "\""
305 if (void_elements[n.name] == null) {
306 if (n.children.length) {
307 ret += nodes_to_html(n.children)
309 ret += "</" + n.name + ">"
313 if (n.parent != null ? plaintext_elements[n.parent.name] : false) {
316 ret += enc_text(n.text)
320 ret += "<!--" + n.text + "-->" // TODO encode?
323 ret += "<!DOCTYPE " + n.name
324 if ((n.public_identifier != null) && n.public_identifier.length > 0) {
325 ret += " \"" + n.public_identifier + "\""
327 if ((n.system_identifier != null) && n.system_identifier.length > 0) {
328 ret += " \"" + n.system_identifier + "\""
336 // TODO make these always pretty-print (on the inside) like blocks
337 // TODO careful though: whitespace might get pushed to parent, which might be rendered
338 no_text_elements = { // these elements never contain text
348 function domify (doc, hash) {
349 var attrs, el, i, k, tag, v
352 if (tag === 'text') {
353 return document.createTextNode(attrs)
355 el = document.createElement(tag)
358 if (k === 'children') {
359 for (i = 0; i < v.length; i++) {
363 el.setAttribute(k, v)
372 '20': true, // capslock
374 '144': true, // numlock
376 '91': true // windows "start" key
378 // key codes: (valid on keydown, not keypress)
383 KEY_BACKSPACE = 8 // <--
384 KEY_DELETE = 46 // -->
393 control_key_codes = { // we react to these, but they aren't typing
410 function instantiate_tree (tree, parent) {
411 var c, i, k, remove, results, v
413 for (i = 0; i < tree.length; ++i) {
417 c.el = parent.ownerDocument.createTextNode(c.text)
418 parent.appendChild(c.el)
421 if (c.name === 'script' || c.name === 'object' || c.name === 'iframe' || c.name === 'link') {
422 // TODO put placeholders instead
426 // TODO create in correct namespace
427 c.el = parent.ownerDocument.createElement(c.name)
431 // FIXME if attr_whitelist[k]?
432 if (valid_attr_regex.test(k)) {
433 if (!js_attr_regex.test(k)) {
434 c.el.setAttribute(k, v)
438 parent.appendChild(c.el)
439 if (c.children.length) {
440 instantiate_tree(c.children, c.el)
445 for (i = 0; i < remove.length; i++) {
446 // FIXME this deletes the wrong node when siblings are removed
448 results.push(tree.splice(index, 1))
453 function traverse_tree (tree, cb) {
456 for (i = 0; i < tree.length; i++) {
462 if (c.children.length) {
463 done = traverse_tree(c.children, cb)
472 function first_cursor_position (tree) {
475 traverse_tree(tree, function(node, state) {
477 if (node.type === 'text') {
478 cursor = new_cursor_position({n: node, i: 0})
479 if (cursor != null) {
481 return true // done traversing
484 return false // not done traversing
486 return found // maybe null
489 // this will fail when text has non-locatable cursor positions (eg collapsed whitespace)
490 function find_next_cursor_position (tree, cursor) {
491 var found, new_cursor, state_before
492 if (cursor.n.type === 'text' && cursor.n.text.length > cursor.i) {
493 new_cursor = new_cursor_position({n: cursor.n, i: cursor.i + 1})
494 if (new_cursor != null) {
500 traverse_tree(tree, function(node, state) {
501 if (node.type === 'text' && state_before === false) {
502 new_cursor = new_cursor_position({n: node, i: 0})
503 if (new_cursor != null) {
505 return true // done traversing
508 if (node === cursor.n) {
511 return false // not done traversing
519 function last_cursor_position (tree) {
522 traverse_tree(tree, function(node) {
524 if (node.type === 'text') {
525 cursor = new_cursor_position({n: node, i: node.text.length})
526 if (cursor != null) {
530 return false // not done traversing
532 return found // maybe null
535 // this will fail when text has non-locatable cursor positions (eg collapsed whitespace)
536 function find_prev_cursor_position (tree, cursor) {
537 var found, found_prev, new_cursor
538 if (cursor.n.type === 'text' && cursor.i > 0) {
539 new_cursor = new_cursor_position({n: cursor.n, i: cursor.i - 1})
540 if (new_cursor != null) {
546 traverse_tree(tree, function(node) {
547 if (node === cursor.n) {
548 found = found_prev // maybe null
549 return true // done traversing
551 if (node.type === 'text') {
552 new_cursor = new_cursor_position({n: node, i: node.text.length})
553 if (new_cursor != null) {
554 found_prev = new_cursor
557 return false // not done traversing
559 return found // maybe null
562 function find_up_cursor_position (tree, cursor, ideal_x) {
563 var new_cursor, prev_cursor, target_y
565 // go prev until we're higher on y axis
566 while (new_cursor.y >= cursor.y) {
567 new_cursor = find_prev_cursor_position(tree, new_cursor)
568 if (new_cursor == null) {
572 // done early if we're already left of old cursor position
573 if (new_cursor.x <= ideal_x) {
576 target_y = new_cursor.y
577 // search leftward, until we find the closest position
578 // new_cursor is the prev-most position we've checked
579 // prev_cursor is the older value, so it's not as prev as new_cursor
580 while (new_cursor.x > ideal_x && new_cursor.y === target_y) {
581 prev_cursor = new_cursor
582 new_cursor = find_prev_cursor_position(tree, new_cursor)
583 if (new_cursor == null) {
587 // move cursor to prev_cursor or new_cursor
588 if (new_cursor != null) {
589 if (new_cursor.y === target_y) {
590 // both valid, and on the same line, use closest
591 if ((ideal_x - new_cursor.x) < (prev_cursor.x - ideal_x)) {
597 // new_cursor on wrong line, use prev_cursor
601 // can't go any further prev, use prev_cursor
606 function find_down_cursor_position (tree, cursor, ideal_x) {
607 var new_cursor, prev_cursor, target_y
609 // go next until we move on the y axis
610 while (new_cursor.y <= cursor.y) {
611 new_cursor = find_next_cursor_position(tree, new_cursor)
612 if (new_cursor == null) {
616 // done early if we're already right of old cursor position
617 if (new_cursor.x >= ideal_x) {
618 // this would be strange, but could happen due to runaround
621 target_y = new_cursor.y
622 // search rightward, until we find the closest position
623 // new_cursor is the next-most position we've checked
624 // prev_cursor is the older value, so it's not as next as new_cursor
625 while (new_cursor.x < ideal_x && new_cursor.y === target_y) {
626 prev_cursor = new_cursor
627 new_cursor = find_next_cursor_position(tree, new_cursor)
628 if (new_cursor == null) {
632 if (new_cursor != null) {
633 if (new_cursor.y === target_y) {
634 // both valid, and on the same line, use closest
635 if ((new_cursor.x - ideal_x) < (ideal_x - prev_cursor.x)) {
641 // new_cursor on wrong line, use prev_cursor
645 // can't go any further prev, use prev_cursor
650 function xy_to_cursor (tree, xy) {
651 var after, before, bounds, cur, guess_i, i, n, ret
652 for (i = 0; i < tree.length; i++) {
654 if (n.type === 'tag' || n.type === 'text') {
655 bounds = get_el_bounds(n.el)
656 if (xy.x < bounds.x) {
659 if (xy.x > bounds.x + bounds.w) {
662 if (xy.y < bounds.y) {
665 if (xy.y > bounds.y + bounds.h) {
668 if (n.children.length) {
669 ret = xy_to_cursor(n.children, xy)
674 if (n.type === 'text') {
675 // click is within bounding box that contains all text.
676 if (n.text.length === 0) {
677 ret = new_cursor_position({n: n, i: 0})
683 before = new_cursor_position({n: n, i: 0})
684 if (before == null) {
687 after = new_cursor_position({n: n, i: n.text.length})
691 if (xy.y < before.y + before.h && xy.x < before.x) {
692 // console.log 'before first char on first line'
695 if (xy.y > after.y && xy.x > after.x) {
696 // console.log 'after last char on last line'
699 if (xy.y < before.y) {
700 console.log("Warning: click in text bounding box but above first line")
701 continue // above first line (runaround?)
703 if (xy.y > after.y + after.h) {
704 console.log("Warning: click in text bounding box but below last line", xy.y, after.y, after.h)
705 continue // below last line (shouldn't happen?)
707 while (after.i - before.i > 1) {
708 guess_i = Math.round((before.i + after.i) / 2)
709 cur = new_cursor_position({n: n, i: guess_i})
711 console.log("error: failed to find cursor pixel location for", n, guess_i)
715 if (xy.y < cur.y || (xy.y <= cur.y + cur.h && xy.x < cur.x)) {
721 if (before == null) { // signals failure to find a cursor position
724 // which one is closest?
725 if (Math.abs(before.x - xy.x) < Math.abs(after.x - xy.x)) {
736 // browsers collapse these (html5 spec calls these "space characters")
737 function is_space_code (char_code) {
748 function is_space (chr) {
749 return is_space_code(chr.charCodeAt(0))
752 function tree_remove_empty_text_nodes (tree) {
753 var c, empties, i, j, n
755 traverse_tree(tree, function(n) {
756 if (n.type === 'text') {
757 if (n.text.length === 0) {
761 return false // not done traversing
763 for (i = 0; i < empties.length; i++) {
765 // don't completely empty the tree
766 if (tree.length === 1) {
767 if (tree[0].type === 'text') {
768 console.log("oop, leaving a blank node because it's the only thing")
772 n.el.parentNode.removeChild(n.el)
773 ref = n.parent.children
774 for (j = 0; j < ref.length; ++j) {
777 n.parent.children.splice(j, 1)
784 function PeachHTML5Editor (in_el, options) {
785 // Options: (all optional)
786 // editor_id: "id" attribute for outer-most element created by/for editor
787 // css_file: filename of a css file to style editable content
788 // on_init: callback for when the editable content is in place
789 var css, opt_fragment, outer_bounds, outer_iframe_style, outer_wrap
790 this.options = options != null ? options : {}
791 this.pretty_print = options.pretty_print != null ? options.pretty_print : true
793 this.tree = null // array of Nodes, all editable content
794 this.tree_parent = null // this.tree is this.children. .el might === this.idoc.body
796 this.init_1_called = false // when iframes have loaded
797 this.outer_iframe // iframe to hold editor
798 this.outer_idoc // "document" object for this.outer_iframe
799 this.wrap2 = null // scrollbar is on this
800 this.wrap2_offset = null
801 this.wrap2_height = null // including padding
802 this.iframe = null // iframe to hold editable content
803 this.idoc = null // "document" object for this.iframe
805 this.cursor_el = null
806 this.cursor_visible = false
807 this.cursor_ideal_x = null
808 this.poll_for_blur_timeout = null
809 opt_fragment = this.options.fragment != null ? this.options.fragment : true
810 this.parser_opts = {}
812 this.parser_opts.fragment = 'body'
814 this.outer_iframe = domify(document, {iframe: {}})
815 outer_iframe_style = 'border: none !important; margin: 0 !important; padding: 0 !important; height: 100% !important; width: 100% !important;'
816 if (this.options.editor_id != null) {
817 this.outer_iframe.setAttribute('id', this.options.editor_id)
819 this.outer_iframe.onload = (function(_this) {
822 _this.outer_idoc = _this.outer_iframe.contentDocument
823 icss = domify(_this.outer_idoc, { style: { children: [
824 domify(_this.outer_idoc, {text: css})
826 _this.outer_idoc.head.appendChild(icss)
827 _this.iframe = domify(_this.outer_idoc, {iframe: {sandbox: 'allow-same-origin allow-scripts'}})
828 _this.iframe.onload = function() {
829 return _this.init_1()
831 timeout(200, function() { // firefox never fires this onload
832 if (!_this.init_1_called) {
833 return _this.init_1()
836 _this.outer_idoc.body.appendChild(
837 domify(_this.outer_idoc, {div: {id: 'wrap1', children: [
838 domify(_this.outer_idoc, {div: {
839 style: "position: absolute; top: 0; left: 1px; font-size: 10px",
840 children: [domify(_this.outer_idoc, {text: "Peach HTML5 Editor"})]
842 _this.wrap2 = domify(_this.outer_idoc, {div: {id: 'wrap2', children: [
843 domify(_this.outer_idoc, {div: {id: 'wrap3', children: [
845 _this.overlay = domify(_this.outer_idoc, { div: { id: 'overlay' }})
852 outer_wrap = domify(document, {div: {"class": 'peach_html5_editor' }})
853 this.in_el.parentNode.appendChild(outer_wrap)
854 outer_bounds = get_el_bounds(outer_wrap)
855 if (outer_bounds.w < 300) {
858 if (outer_bounds.h < 300) {
861 outer_iframe_style += "width: " + outer_bounds.w + "px; height: " + outer_bounds.h + "px;"
862 this.outer_iframe.setAttribute('style', outer_iframe_style)
863 css = this.generate_outer_css({w: outer_bounds.w, h: outer_bounds.h})
864 outer_wrap.appendChild(this.outer_iframe)
866 PeachHTML5Editor.prototype.init_1 = function() { // this.iframe has loaded (but not it's css)
868 this.idoc = this.iframe.contentDocument
869 this.init_1_called = true
870 // chromium doesn't resolve relative urls as though they were at the same domain
871 // so add a <base> tag
872 this.idoc.head.appendChild(domify(this.idoc, {base: {href: this_url_sans_path()}}))
873 // don't let @iframe have scrollbars
874 this.idoc.head.appendChild(domify(this.idoc, {style: {children: [
875 domify(this.idoc, {text: "body { overflow: hidden; }"})
877 if (this.options.css_file) {
878 istyle = domify(this.idoc, {link: {rel: 'stylesheet', href: this.options.css_file}})
879 istyle.onload = (function(_this) {
881 return _this.init_2()
884 this.idoc.head.appendChild(istyle)
889 PeachHTML5Editor.prototype.init_2 = function() { // this.iframe and it's css file(s) are ready
890 this.overlay.onclick = (function(_this) {
893 return event_return(e, _this.onclick(e))
896 this.overlay.ondoubleclick = (function(_this) {
899 return event_return(e, _this.ondoubleclick(e))
902 this.outer_idoc.body.onkeyup = (function(_this) {
905 return event_return(e, _this.onkeyup(e))
908 this.outer_idoc.body.onkeydown = (function(_this) {
911 return event_return(e, _this.onkeydown(e))
914 this.outer_idoc.body.onkeypress = (function(_this) {
917 return event_return(e, _this.onkeypress(e))
920 this.load_html(this.in_el.value)
921 if (this.options.on_init != null) {
922 return this.options.on_init()
925 PeachHTML5Editor.prototype.generate_outer_css = function(args) {
926 var frame_width, h, inner_padding, occupy, ret, w
927 w = args.w != null ? args.w : 300
928 h = args.h != null ? args.h : 300
929 inner_padding = args.inner_padding != null ? args.inner_padding : overlay_padding
930 frame_width = args.frame_width != null ? args.frame_width : inner_padding
931 occupy = function(left, top, right, bottom) {
938 if (bottom == null) {
943 return Math.max(left, top, right, bottom)
949 ret += 'color: black;'
950 ret += 'background: white;'
953 ret += "border: " + (occupy(1)) + "px solid black;"
954 ret += "padding: " + (occupy(frame_width)) + "px;"
957 ret += "border: " + (occupy(1)) + "px solid black;"
958 this.wrap2_height = h // including padding because padding scrolls
959 ret += "padding: " + (occupy(inner_padding)) + "px;"
960 ret += "padding-right: " + (inner_padding + occupy(0, 0, 15, 0)) + "px;"
961 ret += "width: " + w + "px;"
962 ret += "height: " + h + "px;"
963 ret += 'overflow-x: hidden;'
964 ret += 'overflow-y: scroll;'
967 ret += 'position: relative;'
968 ret += "width: " + w + "px;"
969 ret += "min-height: " + h + "px;"
972 ret += 'box-sizing: border-box;'
974 ret += 'border: none;'
976 ret += "width: " + w + "px;"
977 //ret += "height: " + h + "px;" // height auto-set when content set/changed
978 ret += '-ms-user-select: none;'
979 ret += '-webkit-user-select: none;'
980 ret += '-moz-user-select: none;'
981 ret += 'user-select: none;'
984 ret += 'position: absolute;'
985 ret += "left: -" + inner_padding + "px;"
986 ret += "top: -" + inner_padding + "px;"
987 ret += "right: -" + inner_padding + "px;"
988 ret += "bottom: -" + inner_padding + "px;"
989 ret += 'overflow: hidden;'
992 ret += 'position: absolute;'
993 ret += 'background: rgba(100,100,100,0.2);'
996 ret += 'position: absolute;'
998 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));'
999 ret += 'background-size: 200% 200%;'
1000 ret += '-webkit-animation: blink 1s linear normal infinite;'
1001 ret += 'animation: blink 1s linear normal infinite;'
1003 ret += '@-webkit-keyframes blink {'
1004 ret += '0%{background-position:0% 0%}'
1005 ret += '100%{background-position:0% -100%}'
1007 ret += '@keyframes blink { '
1008 ret += '0%{background-position:0% 0%}'
1009 ret += '100%{background-position:0% -100%}'
1012 ret += 'z-index: 5;'
1013 ret += 'position: absolute;'
1014 ret += 'border: 1px solid rgba(0,0,0,0.1);'
1015 ret += 'outline: 1px solid rgba(255,255,255,0.1);' // in case there's a black background
1018 ret += 'z-index: 10;'
1019 ret += 'position: absolute;'
1020 ret += 'font-size: 8px;'
1021 ret += 'white-space: pre;'
1022 ret += 'background: rgba(255,255,255,0.4);'
1023 ret += '-ms-user-select: none;'
1024 ret += '-webkit-user-select: none;'
1025 ret += '-moz-user-select: none;'
1026 ret += 'user-select: none;'
1030 PeachHTML5Editor.prototype.overlay_event_to_inner_xy = function(e) {
1032 if (this.wrap2_offset == null) {
1033 this.wrap2_offset = get_el_bounds(this.wrap2)
1035 x = e.pageX - overlay_padding
1036 y = e.pageY - overlay_padding + this.wrap2.scrollTop
1038 x: x - this.wrap2_offset.x,
1039 y: y - this.wrap2_offset.y
1042 PeachHTML5Editor.prototype.onclick = function(e) {
1044 xy = this.overlay_event_to_inner_xy(e)
1045 new_cursor = xy_to_cursor(this.tree, xy)
1046 if (new_cursor != null) {
1047 this.move_cursor(new_cursor)
1053 PeachHTML5Editor.prototype.ondoubleclick = function(e) {
1056 PeachHTML5Editor.prototype.onkeyup = function(e) {
1060 if (ignore_key_codes[e.keyCode] != null) {
1063 //return false if control_key_codes[e.keyCode] != null
1065 PeachHTML5Editor.prototype.onkeydown = function(e) {
1066 var new_cursor, saved_ideal_x
1070 if (ignore_key_codes[e.keyCode] != null) {
1073 //return false if control_key_codes[e.keyCode] != null
1074 switch (e.keyCode) {
1076 if (this.cursor != null) {
1077 new_cursor = find_prev_cursor_position(this.tree, this.cursor)
1079 new_cursor = first_cursor_position(this.tree)
1081 if (new_cursor != null) {
1082 this.move_cursor(new_cursor)
1086 if (this.cursor != null) {
1087 new_cursor = find_next_cursor_position(this.tree, this.cursor)
1089 new_cursor = last_cursor_position(this.tree)
1091 if (new_cursor != null) {
1092 this.move_cursor(new_cursor)
1096 if (this.cursor != null) {
1097 new_cursor = find_up_cursor_position(this.tree, this.cursor, this.cursor_ideal_x)
1098 if (new_cursor != null) {
1099 saved_ideal_x = this.cursor_ideal_x
1100 this.move_cursor(new_cursor)
1101 this.cursor_ideal_x = saved_ideal_x
1104 // move cursor to first position in document
1105 new_cursor = first_cursor_position(this.tree)
1106 if (new_cursor != null) {
1107 this.move_cursor(new_cursor)
1112 if (this.cursor != null) {
1113 new_cursor = find_down_cursor_position(this.tree, this.cursor, this.cursor_ideal_x)
1114 if (new_cursor != null) {
1115 saved_ideal_x = this.cursor_ideal_x
1116 this.move_cursor(new_cursor)
1117 this.cursor_ideal_x = saved_ideal_x
1120 // move cursor to first position in document
1121 new_cursor = last_cursor_position(this.tree)
1122 if (new_cursor != null) {
1123 this.move_cursor(new_cursor)
1128 new_cursor = last_cursor_position(this.tree)
1129 if (new_cursor != null) {
1130 this.move_cursor(new_cursor)
1134 this.on_key_backspace(e)
1137 if (this.cursor == null) {
1140 new_cursor = find_next_cursor_position(this.tree, {n: this.cursor.n, i: this.cursor.i})
1141 // try moving cursor right and then running backspace code
1142 // TODO replace this hack with a real implementation
1143 if (new_cursor != null) {
1144 // try to detect common case where cursor goes inside an block,
1145 // but doesn't pass a character (and advance one more in that case)
1146 if (new_cursor.n !== this.cursor.n && new_cursor.i === 0) {
1147 if (new_cursor.n.type === 'text' && new_cursor.n.text.length > 0) {
1148 if (new_cursor.n.parent != null) {
1149 if (!this.is_display_block(new_cursor.n.parent)) {
1150 // FIXME should test run sibling
1151 new_cursor = new_cursor_position({n: new_cursor.n, i: new_cursor.i + 1})
1157 if (new_cursor != null) {
1158 if (new_cursor.n !== this.cursor.n || new_cursor.i !== this.cursor.i) {
1159 this.move_cursor(new_cursor)
1160 this.on_key_backspace(e)
1165 this.on_key_enter(e)
1171 new_cursor = first_cursor_position(this.tree)
1172 if (new_cursor != null) {
1173 this.move_cursor(new_cursor)
1179 this.on_page_up_key(e)
1182 this.on_page_down_key(e)
1188 PeachHTML5Editor.prototype.onkeypress = function(e) {
1189 var char, new_cursor
1193 if (ignore_key_codes[e.keyCode] != null) {
1196 char = e.charCode != null ? e.charCode : e.keyCode
1197 if (char && (this.cursor != null)) {
1198 char = String.fromCharCode(char)
1199 this.insert_character(this.cursor.n, this.cursor.i, char)
1200 this.text_cleanup(this.cursor.n)
1202 new_cursor = new_cursor_position({n: this.cursor.n, i: this.cursor.i + 1})
1204 this.move_cursor(new_cursor)
1206 console.log("ERROR: couldn't find cursor position after insert")
1212 PeachHTML5Editor.prototype.on_key_enter = function(e) { // enter key pressed
1213 var before, cur_block, i, n, new_cursor, new_node, new_text, parent_el, pc
1214 if (!this.cursor_visible) {
1217 cur_block = this.cursor.n
1219 if (cur_block.type === 'tag') {
1220 if (is_display_block(cur_block.el)) {
1224 if (cur_block.parent == null) {
1227 cur_block = cur_block.parent
1229 // find array to insert new element into
1230 if (cur_block.parent === this.tree_parent) {
1231 parent_el = this.idoc.body
1234 parent_el = cur_block.parent.el
1235 pc = cur_block.parent.children
1237 for (i = 0; i < pc.length; ++i) {
1239 if (n === cur_block) {
1243 i += 1 // we want to be after it
1244 if (i < pc.length) {
1249 // TODO if content after cursor
1250 // TODO new block is empty
1251 new_text = new peach_parser.Node('text', {text: ' '})
1252 new_node = new peach_parser.Node('tag', {
1254 parent: cur_block.parent,
1255 attrs: {style: 'white-space: pre-wrap'},
1256 children: [new_text]
1258 new_text.parent = new_node
1259 new_text.el = domify(this.idoc, {text: ' '})
1260 new_node.el = domify(this.idoc, {p: {style: 'white-space: pre-wrap', children: [new_text.el]}})
1261 pc.splice(i, 0, new_node)
1262 parent_el.insertBefore(new_node.el, before)
1264 new_cursor = new_cursor_position({
1268 if (new_cursor == null) {
1271 this.move_cursor(new_cursor)
1272 // TODO move content past cursor into this new block
1275 // unlike the global function, this takes a Node, not an element
1276 PeachHTML5Editor.prototype.is_display_block = function(n) {
1277 // TODO stop calling global function, merge it into here, use iframe's window object
1278 if (n.type !== 'tag') {
1281 return is_display_block(n.el)
1283 PeachHTML5Editor.prototype.find_block_parent = function(n) {
1289 if (this.is_display_block(n)) {
1292 if (n === this.tree_parent) {
1298 // return a flat array of nodes (text, <br>, and later also inline-block)
1299 // that are flowing/wrapping together. n can be the containing block, or any
1300 // element inside it.
1301 PeachHTML5Editor.prototype.get_text_run = function(n) {
1304 if (this.is_display_block(n)) {
1307 block = this.find_block_parent(n)
1308 if (block == null) {
1312 traverse_tree(block.children, (function(_this) { return function(n) {
1314 if (n.type === 'text') {
1316 } else if (n.type === 'tag') {
1317 if (n.name === 'br') {
1320 disp = _this.computed_style(n)
1321 if (disp === 'inline-block') {
1326 return false // not done traversing
1330 PeachHTML5Editor.prototype.node_is_decendant = function(young, old) {
1331 while (young != null && young !== this.tree_parent) {
1332 if (young === old) {
1335 young = young.parent
1339 // helper for on_key_backspace
1340 PeachHTML5Editor.prototype._merge_left = function(state) {
1342 // the node prev to n was not prev to it a moment ago, merge with it if reasonable
1343 pi = state.n.parent.children.indexOf(state.n)
1345 prev = state.n.parent.children[pi - 1]
1346 if (prev.type === 'text') {
1347 state.i = prev.text.length
1348 prev.text = prev.el.textContent = prev.text + state.n.text
1349 this.remove_node(state.n)
1351 state.changed = true
1352 state.moved_cursor = true
1355 // else // TODO merge possible consecutive matching inline tags at @cursor
1358 // helper for on_key_backspace
1359 // remove n from the dom, also remove its inline parents that are emptied by removing n
1360 PeachHTML5Editor.prototype._backspace_node_helper = function(n, run, run_i) {
1363 run = this.get_text_run(n)
1365 if (run_i == null) {
1366 run_i = run.indexOf(n)
1368 block = this.find_block_parent(n)
1371 while (n != null && n !== block) {
1372 // bail if the previous node in this run is also inside the same parent
1374 if (this.node_is_decendant(run[run_i - 1], n)) {
1378 // bail if the next node in this run is also inside the same parent
1379 if (run_i + 1 < run.length) {
1380 if (this.node_is_decendant(run[run_i + 1], n)) {
1384 // move any sibling nodes to parent. These nodes are not in the text run
1385 while (n.children.length > 0) {
1386 this.move_node(n.children[0], n.parent, n)
1388 // remove (now completely empty) inline parent
1390 // proceed to outer parent
1394 PeachHTML5Editor.prototype.on_key_backspace = function(e) {
1395 var block, changed, merge_state, n, ncb, need_text_cleanup, new_cursor, pcb, post, pre, prev, prev_cursor, run, run_i
1396 if (this.cursor == null) {
1402 if (this.cursor.i === 0) { // cursor is at start of text node
1404 run = this.get_text_run(this.cursor.n)
1406 run_i = run.indexOf(this.cursor.n)
1407 if (run_i === 0) { // if at start of text run
1408 block = this.find_block_parent(this.cursor.n)
1409 prev_cursor = find_prev_cursor_position(this.tree, {n: this.cursor.n, i: 0})
1410 if (prev_cursor === null) { // if in first text run of document
1411 // do nothing (there's nothing text-like to the left of the cursor)
1414 // else merge with prev/outer text run
1415 pcb = this.find_block_parent(prev_cursor.n)
1416 while (block.children.length > 0) {
1417 this.move_node(block.children[0], pcb)
1419 this.remove_node(block)
1420 // merge possible consecutive text nodes at @cursor
1421 merge_state = {n: this.cursor.n}
1422 this._merge_left(merge_state)
1423 this.text_cleanup(merge_state.n)
1424 new_cursor = new_cursor_position({n: merge_state.n, i: merge_state.i})
1425 } else { // at start of text node, but not start of text run
1426 prev = run[run_i - 1]
1427 if (prev.type === 'text') { // if previous in text run is text
1428 if (prev.text.length === 1) { // if emptying prev (in text run)
1429 this._backspace_node_helper(prev, run, run_i)
1430 merge_state = {n: this.cursor.n, i: this.cursor.i}
1431 this._merge_left(merge_state)
1432 this.text_cleanup(merge_state.n)
1433 new_cursor = new_cursor_position({n: merge_state.n, i: merge_state.i})
1434 } else { // prev in run is text with muliple chars
1435 // delete last character in prev
1436 prev.text = prev.text.substr(0, prev.text.length - 1)
1437 prev.el.textContent = prev.text
1438 this.text_cleanup(this.cursor.n)
1439 new_cursor = new_cursor_position({n: this.cursor.n, i: this.cursor.i})
1441 } else if (prev.name === 'br' || prev.name === 'hr') {
1442 this._backspace_node_helper(prev, run, run_i)
1443 merge_state = {n: this.cursor.n, i: this.cursor.i}
1444 this._merge_left(merge_state)
1445 this.text_cleanup(merge_state.n)
1446 new_cursor = new_cursor_position({n: merge_state.n, i: merge_state.i})
1448 // FIXME implement this:
1449 // else // if prev (in run) is inline-block
1450 // if that inline-block has text in it
1451 // delete last char in prev inlineblock
1452 // if that empties it
1456 // move cursor inside
1458 // delete prev (inline) block
1460 // auto-delete this @cursor.parent(s) if this empties them
1462 } else { // cursor is not at start of text node
1464 run = this.get_text_run(this.cursor.n)
1466 if (this.cursor.n.text.length === 1) { // if emptying text node
1467 if (run.length === 1) { // if emptying text run (of text/br/hr/inline-block)
1468 // remove inline-parents of @cursor.n
1469 block = this.find_block_parent(this.cursor.n)
1471 n = this.cursor.n.parent
1472 // note: this doesn't use _backspace_node_helper because:
1473 // 1. we don't want to delete the target node (we're replacing it's contents)
1474 // 2. we want to track whether anything was removed
1475 // 3. we know already know there's no other text from this run anywhere
1476 while (n && n !== block) {
1478 while (n.children.length > 0) {
1479 this.move_node(n.children[0], n.parent, n)
1484 // replace @cursor.n with a single (preserved) space
1485 if (this.cursor.n.text !== ' ') {
1487 this.cursor.n.text = this.cursor.n.el.textContent = ' '
1490 this.text_cleanup(this.cursor.n)
1492 // place the cursor to the left of that space
1493 new_cursor = new_cursor_position({n: this.cursor.n, i: 0})
1494 } else { // emptying a text node (but not a whole text run)
1495 // figure out where cursor should land
1496 block = this.find_block_parent(this.cursor.n)
1497 new_cursor = find_prev_cursor_position(this.tree, {n: this.cursor.n, i: 0})
1498 ncb = this.find_block_parent(new_cursor.n)
1499 if (ncb !== block) {
1500 new_cursor = find_next_cursor_position(this.tree, {n: this.cursor.n, i: 1})
1502 // delete text node and cleanup emptied parents
1503 run_i = run.indexOf(this.cursor.n)
1504 this._backspace_node_helper(this.cursor.n, run, run_i)
1505 // see if new adjacent siblings should merge
1506 // TODO make smarter
1507 if (run_i > 0 && run_i + 1 < run.length) {
1508 if (run[run_i - 1].type === 'text' && run[run_i + 1].type === 'text') {
1509 merge_state = {n: run[run_i + 1]}
1510 this._merge_left(merge_state)
1511 if (merge_state.moved_cursor) {
1512 new_cursor = merge_state
1516 // update whitespace preservation
1517 this.text_cleanup(block)
1518 // update cursor x/y in case things moved around
1519 if (new_cursor != null) {
1520 if (new_cursor.n.el.parentNode) { // still in dom after cleanup
1521 new_cursor = new_cursor_position({n: new_cursor.n, i: new_cursor.i})
1527 } else { // there's a char left of cursor that we can delete without emptying anything
1529 need_text_cleanup = true
1530 if (this.cursor.i > 1 && this.cursor.i < this.cursor.n.text.length) {
1531 pre = this.cursor.n.text.substr(this.cursor.i - 2, 3)
1532 post = pre.charAt(0) + pre.charAt(2)
1533 if (str_has_ws_run(pre) === str_has_ws_run(post)) {
1534 need_text_cleanup = false
1537 this.remove_character(this.cursor.n, this.cursor.i - 1)
1538 // call text_cleanup if whe created/removed a whitespace run
1539 if (need_text_cleanup) {
1540 this.text_cleanup(this.cursor.n)
1542 new_cursor = new_cursor_position({n: this.cursor.n, i: this.cursor.i - 1})
1545 // mark document changed and move the cursor
1546 if (changed != null) {
1549 if (new_cursor != null) {
1550 this.move_cursor(new_cursor)
1555 PeachHTML5Editor.prototype.on_page_up_key = function(e) {
1556 var new_cursor, screen_y, scroll_amount
1557 if (this.wrap2.scrollTop === 0) {
1558 if (this.cursor == null) {
1561 new_cursor = first_cursor_position(this.tree)
1562 if (new_cursor != null) {
1563 if (new_cursor.n !== this.cursor.n || new_cursor.i !== this.cursor.i) {
1564 this.move_cursor(new_cursor)
1569 if (this.cursor != null) {
1570 screen_y = this.cursor.y - this.wrap2.scrollTop
1572 scroll_amount = this.wrap2_height - breathing_room
1573 this.wrap2.scrollTop = Math.max(0, this.wrap2.scrollTop - scroll_amount)
1574 if (this.cursor != null) {
1575 return this.move_cursor_into_view(screen_y + this.wrap2.scrollTop)
1578 PeachHTML5Editor.prototype.on_page_down_key = function(e) {
1579 var lowest_scrollpos, new_cursor, screen_y, scroll_amount
1580 lowest_scrollpos = this.wrap2.scrollHeight - this.wrap2_height
1581 if (this.wrap2.scrollTop === lowest_scrollpos) {
1582 if (this.cursor == null) {
1585 new_cursor = last_cursor_position(this.tree)
1586 if (new_cursor != null) {
1587 if (new_cursor.n !== this.cursor.n || new_cursor.i !== this.cursor.i) {
1588 this.move_cursor(new_cursor)
1593 if (this.cursor != null) {
1594 screen_y = this.cursor.y - this.wrap2.scrollTop
1596 scroll_amount = this.wrap2_height - breathing_room
1597 this.wrap2.scrollTop = Math.min(lowest_scrollpos, this.wrap2.scrollTop + scroll_amount)
1598 if (this.cursor != null) {
1599 this.move_cursor_into_view(screen_y + this.wrap2.scrollTop)
1602 PeachHTML5Editor.prototype.move_cursor_into_view = function(y_target) {
1603 var cur, far_enough, finder, new_cursor, saved_ideal_x, was, y_max, y_min
1604 if (y_target === this.cursor.y) {
1608 y_min = this.wrap2.scrollTop
1609 if (this.wrap2.scrollTop !== 0) {
1610 y_min += breathing_room
1612 y_max = this.wrap2.scrollTop + this.wrap2_height
1613 if (this.wrap2.scrollTop !== this.wrap2.scrollHeight - this.wrap2_height) { // downmost
1614 y_max -= breathing_room
1616 y_target = Math.min(y_target, y_max)
1617 y_target = Math.max(y_target, y_min)
1618 if (y_target < this.cursor.y) {
1619 finder = find_up_cursor_position
1620 far_enough = function(cur, target_y) {
1621 return cur.y + cur.h <= target_y
1624 finder = find_down_cursor_position
1625 far_enough = function(cur, y_target) {
1626 return cur.y >= y_target
1630 cur = finder(this.tree, was, this.cursor_ideal_x)
1634 if (far_enough(cur, y_target)) {
1639 if (was === this.cursor) {
1643 if (was.y + was.h > y_max) {
1645 } else if (was.y < y_min) {
1650 if (cur.y + cur.h > y_max) {
1652 } else if (cur.y < y_min) {
1656 if ((cur != null) && (was != null)) {
1657 // both valid, pick best
1658 if (cur.y < y_min) {
1660 } else if (was.y + was.h > y_max) {
1662 } else if (cur.y - y_target < y_target - was.y) {
1668 new_cursor = was != null ? was : cur
1670 if (new_cursor != null) {
1671 saved_ideal_x = this.cursor_ideal_x
1672 this.move_cursor(new_cursor)
1673 this.cursor_ideal_x = saved_ideal_x
1676 // remove all the editable content (and cursor, overlays, etc)
1677 PeachHTML5Editor.prototype.clear_dom = function() {
1678 while (this.idoc.body.childNodes.length) {
1679 this.idoc.body.removeChild(this.idoc.body.childNodes[0])
1683 PeachHTML5Editor.prototype.load_html = function(html) {
1684 this.tree = peach_parser(html, this.parser_opts)
1685 if (this.tree[0] == null ? true : this.tree[0].parent == null) {
1686 this.tree = peach_parser('<p style="white-space: pre-wrap"> </p>', this.parser_opts)
1688 this.tree_parent = this.tree[0].parent
1689 this.tree_parent.el = this.idoc.body
1691 instantiate_tree(this.tree, this.tree_parent.el)
1692 this.collapse_whitespace(this.tree)
1693 return this.changed()
1695 PeachHTML5Editor.prototype.changed = function() {
1696 this.in_el.onchange = null
1697 if (this.pretty_print) {
1698 this.in_el.value = this.pretty_html(this.tree)
1700 this.in_el.value = nodes_to_html(this.tree)
1702 this.in_el.onchange = (function(_this) { return function() {
1703 return _this.load_html(_this.in_el.value)
1705 return this.adjust_iframe_height()
1707 PeachHTML5Editor.prototype.adjust_iframe_height = function() {
1709 s = this.wrap2.scrollTop
1710 // when the content gets shorter, the idoc's body tag will continue to
1711 // report the old (too big) height in Chrome. The workaround is to
1712 // shrink the iframe before the content height:
1713 this.iframe.style.height = "10px"
1714 h = parseInt(this.idoc.body.scrollHeight, 10)
1715 this.iframe.style.height = h + "px"
1716 return this.wrap2.scrollTop = s
1718 // true if n is text node with only one caracter, and the only child of a tag
1719 PeachHTML5Editor.prototype.is_only_char_in_tag = function(n, i) {
1720 if (n.type !== 'text') {
1723 if (n.text.length !== 1) {
1726 if (n.parent === this.tree_parent) {
1729 if (n.parent.children.length !== 1) {
1734 // true if n is text node with just a space in it, and the only child of a tag
1735 PeachHTML5Editor.prototype.is_lone_space = function(n, i) {
1736 if (n.type !== 'text') {
1739 if (n.text !== ' ') {
1742 if (n.parent === this.tree_parent) {
1745 if (n.parent.children.length !== 1) {
1750 // detect special case: typing before a space that's the only thing in a block/doc
1751 // reason: enter key creates blocks with just a space in them
1752 PeachHTML5Editor.prototype.insert_should_replace = function(n, i) {
1756 if (n.text !== ' ') {
1759 if (n.parent === this.tree_parent) {
1762 if (n.parent.children.length === 1) {
1763 if (n.parent.children[0] === n) {
1770 // WARNING: after calling this, you MUST call changed() and text_cleanup()
1771 PeachHTML5Editor.prototype.insert_character = function(n, i, char) {
1772 if (n.parent === this.tree_parent) {
1773 // FIXME implement text nodes at top level
1776 // insert the character
1777 if (this.insert_should_replace(n, i)) {
1779 } else if (i === 0) {
1780 n.text = char + n.text
1781 } else if (i === n.text.length) {
1784 n.text = n.text.substr(0, i) + char + n.text.substr(i)
1786 return n.el.nodeValue = n.text
1788 // WARNING: after calling this, you MUST call changed() and text_cleanup()
1789 PeachHTML5Editor.prototype.remove_character = function(n, i) {
1790 n.text = n.text.substr(0, i) + n.text.substr(i + 1)
1791 return n.el.nodeValue = n.text
1793 PeachHTML5Editor.prototype.computed_style = function(n, prop) {
1795 if (n.type === 'text') {
1798 style = this.iframe.contentWindow.getComputedStyle(n.el, null)
1799 return style.getPropertyValue(prop)
1801 // returns the new white-space value that will preserve spaces for node n
1802 PeachHTML5Editor.prototype.preserve_space = function(n, ideal_target) {
1804 if (n.type === 'text') {
1809 while (target !== ideal_target && !target.el.style.whiteSpace) {
1810 if (target == null) {
1811 console.log("bug #967123")
1814 target = target.parent
1816 ws = (ref = ws_props[target.el.style.whiteSpace]) != null ? ref.to_preserve : null
1820 target.el.style.whiteSpace = ws
1821 this.update_style_from_el(target)
1824 PeachHTML5Editor.prototype.update_style_from_el = function(n) {
1826 style = n.el.getAttribute('style')
1827 if (style != null) {
1828 return n.attrs.style = style
1830 if (n.attrs.style != null) {
1831 return delete n.attrs.style
1835 // remove whitespace that would be trimmed
1836 // replace whitespace that would collapse with a single space
1837 // FIXME remove whitespace from after <br> (but not before)
1839 // check computed white-space prop on txt parents
1840 // batch replace txt node contents (ie don't loop for each char)
1841 PeachHTML5Editor.prototype.collapse_whitespace = function(tree) {
1842 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
1846 prev = cur = next = null
1847 prev_i = cur_i = next_i = 0
1848 prev_pos = pos = next_pos = null
1849 prev_px = cur_px = next_px = null
1853 tree_remove_empty_text_nodes(tree)
1855 iterate = function(tree, cb) {
1856 var advance, block, i, j, n
1857 for (j = 0; j < tree.length; j++) {
1859 if (n.type === 'text') {
1861 while (i < n.text.length) { // don't foreach, cb might remove chars
1868 if (n.type === 'tag') {
1869 block = is_display_block(n.el)
1873 if (n.children.length > 0) {
1874 iterate(n.children, cb)
1883 remove = function(undo) {
1885 cur.el.textContent = cur.text = (cur.text.substr(0, cur_i)) + removed_char + (cur.text.substr(cur_i))
1886 if (next === cur) { // in same text node
1891 removed_char = cur.text.charAt(cur_i)
1892 cur.el.textContent = cur.text = (cur.text.substr(0, cur_i)) + (cur.text.substr(cur_i + 1))
1893 if (next === cur) { // in same text node
1895 throw "how is this possible?"
1902 replace_with_space = function(undo) {
1904 cur.text = (cur.text.substr(0, cur_i)) + removed_char + (cur.text.substr(cur_i + 1))
1905 cur.el.textContent = cur.text
1907 removed_char = cur.text.charAt(cur_i)
1908 if (removed_char !== ' ') {
1909 cur.text = (cur.text.substr(0, cur_i)) + ' ' + (cur.text.substr(cur_i + 1))
1910 cur.el.textContent = cur.text
1915 // return true if cur was removed from the dom (ie re-use same prev)
1916 operate = function() {
1917 // cur definitately set
1918 // prev and/or next might be null, indicating the start/end of a display:block
1919 var bounds, dbg, fixer, fixers, i, need_undo, new_next_px, new_prev_px, removed, undo_arg
1920 if (!is_space_code(cur.text.charCodeAt(cur_i))) {
1923 fixers = [remove, replace_with_space]
1924 // check for common case: single whitespace surrounded by non-whitespace chars
1925 if ((prev != null) && (next != null)) {
1926 if (!((is_space_code(prev.text.charCodeAt(prev_i))) || (is_space_code(next.text.charCodeAt(next_i))))) {
1927 dbg = cur.text.charCodeAt(cur_i)
1928 if (cur.text.charAt(cur_i) === ' ') {
1931 fixers = [replace_with_space]
1935 bounds = text_range_bounds(cur.el, cur_i, cur_i + 1)
1936 // consistent cases:
1937 // 1. zero rects returned by getClientRects() means collapsed space
1938 if (bounds === null) {
1941 // 2. width greater than zero means visible space
1943 // has bounds, don't try removing
1944 fixers = [replace_with_space]
1946 // now the weird edge cases...
1948 // firefox and chromium both report zero width for characters at the end
1949 // of a line where the text wraps (automatically, due to word-wrap) to
1950 // the next line. These do not appear to be distinguishable from
1951 // collapsed spaces via the range/bounds api, so...
1953 // remove it from the dom, and if prev or next moves, put it back.
1955 // this block (try changing it, put it back if something moves) is also
1956 // used on collapsable whitespace characters besides space. In this case
1957 // the character is replaced with a normal space character instead of
1959 if ((prev != null) && (prev_px == null)) {
1960 prev_px = new_cursor_position({n: prev, i: prev_i})
1962 if ((next != null) && (next_px == null)) {
1963 next_px = new_cursor_position({n: next, i: next_i})
1965 //if prev is null and next is null
1966 // parent_px = cur.parent.el.getBoundingClientRect()
1967 undo_arg = true // just for readabality
1969 for (i = 0; i < fixers.length; i++) {
1977 if (prev_px != null) {
1978 new_prev_px = new_cursor_position({n: prev, i: prev_i})
1979 if (new_prev_px != null) {
1980 if (new_prev_px.x !== prev_px.x || new_prev_px.y !== prev_px.y) {
1987 console.log("this shouldn't happen, we remove spaces that don't locate")
1990 if ((next != null) && !need_undo) {
1991 if (next_px != null) {
1992 new_next_px = new_cursor_position({n: next, i: next_i})
1993 if (new_next_px != null) {
1994 if (new_next_px.x !== next_px.x || new_next_px.y !== next_px.y) {
2002 // console.log "removing space becase space after it is collapsed"
2005 removed += fixer(undo_arg)
2014 // pass null at start/end of display:block
2015 queue = function(n, i) {
2016 var advance, removed
2023 // don't advance (to the next character next time) if we removed a
2024 // character from the same text node as ``next``, because doing so
2025 // renumbers the indexes in that string
2026 if (removed && cur === next) {
2043 iterate(tree, queue)
2046 tree_remove_empty_text_nodes(tree)
2048 // call this after you insert or remove inline nodes. It will:
2049 // merge consecutive text nodes
2050 // remove empty text nodes
2051 // adjust white-space property
2052 // note: this assumes that all whitespace in text nodes should be displayed
2053 // (ie not collapse or be trimmed) and will change the white-space property
2054 // as needed to achieve this.
2055 PeachHTML5Editor.prototype.text_cleanup = function(n) {
2056 var block, eats_start_sp, i, last, n_i, need_preserve, prev, prev_i, run, ws
2057 if (this.is_display_block(n)) {
2060 block = this.find_block_parent(n)
2061 if (block == null) {
2065 run = this.get_text_run(block)
2069 // merge consecutive text elements
2070 if (run.length > 1) {
2073 while (i < run.length) {
2075 if (prev.type === 'text' && n.type === 'text') {
2076 if (prev.parent === n.parent) {
2077 prev_i = n.parent.children.indexOf(prev)
2078 n_i = n.parent.children.indexOf(n)
2079 if (n_i === prev_i + 1) {
2080 prev.text = prev.text + n.text
2081 prev.el.textContent = prev.text
2084 continue // don't increment i or change prev
2092 // remove empty text nodes
2094 while (i < run.length) {
2096 if (n.type === 'text') {
2097 if (n.text === '') {
2099 // FIXME maybe remove parents recursively if this makes them empty
2101 continue // don't increment i
2106 // note: inline tags can have white-space:pre-line/etc
2107 // note: inline-blocks have their whitespace collapsed independantly of outer run
2108 // note: inline-blocks are treated like non-whitespace char even if empty
2109 if (block.el.style.whiteSpace != null) {
2110 ws = block.el.style.whiteSpace
2112 if (ws_props[ws].space) {
2113 if (ws_props[ws].to_collapse === 'normal') {
2114 block.el.style.whiteSpace = null
2116 block.el.style.whiteSpace = ws_props[ws].to_collapse
2118 this.update_style_from_el(block)
2122 // note: space after <br> colapses, but not space before
2123 // check for spaces that would collapse without help
2124 eats_start_sp = true // if the next node starts with space it collapses (unless pre)
2126 for (i = 0; i < run.length; ++i) {
2128 if (n.type === 'tag') {
2129 if (n.name === 'br') {
2130 eats_start_sp = true
2132 eats_start_sp = false
2135 need_preserve = false
2136 if (n.type !== 'text') {
2137 console.log("bug #232308")
2140 if (eats_start_sp) {
2141 if (is_space_code(n.text.charCodeAt(0))) {
2142 need_preserve = true
2145 if (!need_preserve) {
2146 need_preserve = multi_sp_regex.test(n.text)
2148 if (need_preserve) {
2149 // do we have it already?
2150 ws = this.computed_style(n, 'white-space') // FIXME implement this
2151 if (ws_props[ws] != null ? !ws_props[ws].space : true) {
2152 // 2nd arg is ideal target for css rule
2153 ws = this.preserve_space(n, block)
2155 eats_start_sp = false
2157 if (is_space_code(n.text.charCodeAt(n.text.length - 1))) {
2158 ws = this.computed_style(n, 'white-space') // FIXME implement this
2159 if ((ref1 = ws_props[ws]) != null ? ref1.space : void 0) {
2160 eats_start_sp = false
2162 eats_start_sp = true
2165 eats_start_sp = false
2170 // check if text ends with a collapsable space
2171 if (run.length > 0) {
2172 last = run[run.length - 1]
2173 if (last.type === 'text') {
2174 if (eats_start_sp) {
2175 this.preserve_space(last, block)
2180 PeachHTML5Editor.prototype.css_clear = function(n, prop) {
2181 var css_delimiter_regex, i, styles
2182 if (n.attrs.style == null) {
2185 if (n.attrs.style === '') {
2188 css_delimiter_regex = new RegExp('\s*;\s*', 'g') // FIXME make this global
2189 styles = n.attrs.style.trim().split(css_delimiter)
2190 if (!(styles.length > 0)) {
2193 if (styles[styles.length - 1] === '') {
2195 if (!(styles.length > 0)) {
2200 while (i < styles.length) {
2201 if (styles[i].substr(0, 12) === 'white-space:') {
2208 // WARNING: after calling this one or more times, you MUST:
2209 // if it's inline: call @text_cleanup
2211 PeachHTML5Editor.prototype.remove_node = function(n) {
2213 i = n.parent.children.indexOf(n)
2215 throw "BUG #9187112313"
2217 n.el.parentNode.removeChild(n.el)
2218 n.parent.children.splice(i, 1)
2220 // remove a node from the tree/dom, insert into new_parent before insert_before?end
2221 // WARNING: after calling this one or more times, you MUST:
2222 // if it's inline: call @text_cleanup
2224 PeachHTML5Editor.prototype.move_node = function(n, new_parent, insert_before) {
2226 if (insert_before == null) {
2227 insert_before = null
2229 i = n.parent.children.indexOf(n)
2231 throw "Error: tried to remove node, but it's not in it's parents list of children"
2234 if (insert_before != null) {
2235 before_i = new_parent.children.indexOf(insert_before)
2237 throw "Error: tried to move a node to be before a non-existent node"
2239 insert_before = insert_before.el
2242 if (insert_before != null) {
2243 new_parent.el.insertBefore(n.el, insert_before)
2244 new_parent.children.splice(before_i, 0, n)
2246 new_parent.el.appendChild(n.el, insert_before)
2247 new_parent.children.push(n)
2249 n.parent = new_parent
2251 // remove it, forget where it was
2252 PeachHTML5Editor.prototype.kill_cursor = function() {
2253 if (this.cursor_visible) {
2254 this.cursor_el.parentNode.removeChild(this.cursor_el)
2255 this.cursor_visible = false
2260 PeachHTML5Editor.prototype.move_cursor = function(cursor) {
2262 this.cursor_ideal_x = cursor.x
2263 this.cursor = cursor
2264 if (!this.cursor_visible) {
2265 this.cursor_el = domify(this.outer_idoc, {div: { id: 'cursor'}})
2266 this.overlay.appendChild(this.cursor_el)
2267 this.cursor_visible = true
2269 this.cursor_el.style.left = (cursor.x + overlay_padding - 1) + "px"
2275 this.cursor_el.style.top = (cursor.y + overlay_padding + Math.round(height * .07)) + "px"
2276 this.cursor_el.style.height = (Math.round(height * 0.82)) + "px"
2277 this.annotate(cursor.n)
2278 this.scroll_into_view(cursor.y, height)
2280 PeachHTML5Editor.prototype.scroll_into_view = function(y, h) {
2281 var downmost, upmost
2285 y += overlay_padding // convert units from @idoc to @wrap2
2286 // very top of document
2287 if (y <= breathing_room) {
2288 this.wrap2.scrollTop = 0
2291 // very bottom of document
2292 if (y + h >= this.wrap2.scrollHeight - breathing_room) {
2293 this.wrap2.scrollTop = this.wrap2.scrollHeight - this.wrap2_height
2296 // The most scrolled up (lowest value for scrollTop) that would be OK
2297 upmost = y + h + breathing_room - this.wrap2_height
2298 upmost = Math.max(upmost, 0)
2299 // the most scrolled down (highest value for scrollTop) that would be OK
2300 downmost = y - breathing_room
2301 downmost = Math.min(downmost, this.wrap2.scrollHeight - this.wrap2_height)
2302 if (upmost > downmost) { // means h is too big to fit
2303 // scroll so top is visible
2304 this.wrap2.scrollTop = downmost
2307 if (this.wrap2.scrollTop < upmost) {
2308 this.wrap2.scrollTop = upmost
2311 if (this.wrap2.scrollTop > downmost) {
2312 this.wrap2.scrollTop = downmost
2316 PeachHTML5Editor.prototype.annotate = function(n) {
2317 var alpha, ann_box, ann_tag, bounds, prev_bounds
2318 while (this.matting.length > 0) {
2319 this.overlay.removeChild(this.matting[0])
2320 this.matting.shift()
2325 prev_bounds = {x: 0, y: 0, w: 0, h: 0}
2327 while (((n != null ? n.el : void 0) != null) && n !== this.tree_parent) {
2328 if (n.type === 'text') {
2332 bounds = get_el_bounds(n.el)
2333 if (bounds == null) {
2336 if (bounds.x === prev_bounds.x && bounds.y === prev_bounds.y && bounds.w === prev_bounds.w && bounds.h === prev_bounds.h) {
2340 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});
2341 this.overlay.appendChild(ann_box)
2342 this.matting.push(ann_box)
2343 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 + " "})]}})
2344 this.overlay.appendChild(ann_tag)
2345 this.matting.push(ann_tag)
2350 PeachHTML5Editor.prototype.pretty_html = function(tree, indent, parent_flags) {
2351 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
2352 if (indent == null) {
2355 if (parent_flags == null) {
2363 want_nl = parent_flags.want_nl
2364 prev_in_flow_is_text = false
2365 prev_in_flow_is_block = false
2366 for (i = 0; i < tree.length; ++i) {
2374 if (n.name === 'br') {
2378 if (n.el.currentStyle != null) {
2379 cs = n.el.currentStyle
2380 whitespace = cs['white-space']
2381 display = cs['display']
2382 position = cs['position']
2384 visibility = cs['visibility']
2386 cs = this.iframe.contentWindow.getComputedStyle(n.el, null)
2387 whitespace = cs.getPropertyValue('white-space')
2388 display = cs.getPropertyValue('display')
2389 position = cs.getPropertyValue('position')
2390 float = cs.getPropertyValue('float')
2391 visibility = cs.getPropertyValue('visibility')
2393 if (n.name === 'textarea') {
2394 inner_flags.pre_ish = true
2396 inner_flags.pre_ish = whitespace.substr(0, 3) === 'pre'
2410 if ('display' === 'none') {
2413 switch (visibility) {
2427 inner_flags.block = false
2428 is_block = in_flow_block = false
2430 case 'inline-black':
2431 inner_flags.block = true
2432 is_block = in_flow_block = false
2435 inner_flags.block = true
2437 in_flow_block = in_flow
2444 in_flow_block = false
2446 default: // 'comment', 'doctype'
2450 in_flow_block = false
2452 // print whitespace if we can
2453 if (!parent_flags.pre_ish) {
2454 if (!(prev_in_flow_is_text && is_br)) {
2455 if ((i === 0 && parent_flags.block) || in_flow_block || prev_in_flow_is_block) {
2467 for (k in n.attrs) {
2468 attr_keys.unshift(k)
2471 for (j = 0; j < attr_keys.length; ++j) {
2474 if (n.attrs[k].length > 0) {
2475 ret += "=\"" + (enc_attr(n.attrs[k])) + "\""
2479 if (void_elements[n.name] == null) {
2480 if (inner_flags.block) {
2481 next_indent = indent + ' '
2483 next_indent = indent
2485 if (n.children.length) {
2486 ret += this.pretty_html(n.children, next_indent, inner_flags)
2488 ret += "</" + n.name + ">"
2492 if (n.parent != null ? plaintext_elements[n.parent.name] : false) {
2495 ret += enc_text(n.text)
2499 ret += "<!--" + n.text + "-->" // TODO encode?
2502 ret += "<!DOCTYPE " + n.name
2503 if ((n.public_identifier != null) && n.public_identifier.length > 0) {
2504 ret += " \"" + n.public_identifier + "\""
2506 if ((n.system_identifier != null) && n.system_identifier.length > 0) {
2507 ret += " \"" + n.system_identifier + "\""
2513 prev_in_flow_is_text = is_text
2514 prev_in_flow_is_block = is_block || (in_flow && is_br)
2518 // output final newline if allowed
2519 if (!parent_flags.pre_ish) {
2520 if (prev_in_flow_is_block || parent_flags.block) {
2521 ret += "\n" + (indent.substr(4))
2527 PeachHTML5Editor.prototype.onblur = function() {
2530 PeachHTML5Editor.prototype.have_focus = function() {
2531 this.editor_is_focused = true
2532 this.poll_for_blur()
2534 PeachHTML5Editor.prototype.poll_for_blur = function() {
2535 if (this.poll_for_blur_timeout != null) {
2538 this.poll_for_blur_timeout = timeout(150, (function(_this) { return function() {
2539 next_frame(function() { // pause polling when browser knows we're not active/visible/etc.
2540 _this.poll_for_blur_timeout = null
2541 if (document.activeElement === _this.outer_iframe) {
2542 _this.poll_for_blur()
2544 _this.editor_is_focused = false
2551 window.peach_html5_editor = function() {
2552 // coffeescript: return new PeachHTML5Editor args...
2553 // compiles to below... there must be a better way
2555 args = 1 <= arguments.length ? slice.call(arguments, 0) : []
2556 return (function(func, args, ctor) {
2557 ctor.prototype = func.prototype
2558 var child = new ctor, result = func.apply(child, args)
2559 return Object(result) === result ? result : child
2560 })(PeachHTML5Editor, args, function(){})
2565 // test in browser: peach_html5_editor(document.getElementsByTagName('textarea')[0])