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) {
275 // this does not pretty-print
276 function nodes_to_html (tree) {
277 var attr_keys, i, k, n, ret
279 for (i = 0; i < tree.length; ++i) {
287 if (n.attrs[k].length > 0) {
288 ret += "=\"" + (enc_attr(n.attrs[k])) + "\""
292 if (void_elements[n.name] == null) {
293 if (n.children.length) {
294 ret += nodes_to_html(n.children)
296 ret += "</" + n.name + ">"
300 ret += enc_text(n.text)
303 ret += "<!--" + n.text + "-->" // TODO encode?
306 ret += "<!DOCTYPE " + n.name
307 if ((n.public_identifier != null) && n.public_identifier.length > 0) {
308 ret += " \"" + n.public_identifier + "\""
310 if ((n.system_identifier != null) && n.system_identifier.length > 0) {
311 ret += " \"" + n.system_identifier + "\""
319 // TODO make these always pretty-print (on the inside) like blocks
320 // TODO careful though: whitespace might get pushed to parent, which might be rendered
321 no_text_elements = { // these elements never contain text
331 function domify (doc, hash) {
332 var attrs, el, i, k, tag, v
335 if (tag === 'text') {
336 return document.createTextNode(attrs)
338 el = document.createElement(tag)
341 if (k === 'children') {
342 for (i = 0; i < v.length; i++) {
346 el.setAttribute(k, v)
355 '20': true, // capslock
357 '144': true, // numlock
359 '91': true // windows "start" key
361 // key codes: (valid on keydown, not keypress)
366 KEY_BACKSPACE = 8 // <--
367 KEY_DELETE = 46 // -->
376 control_key_codes = { // we react to these, but they aren't typing
393 function instantiate_tree (tree, parent) {
394 var c, i, k, remove, results, v
396 for (i = 0; i < tree.length; ++i) {
400 c.el = parent.ownerDocument.createTextNode(c.text)
401 parent.appendChild(c.el)
404 if (c.name === 'script' || c.name === 'object' || c.name === 'iframe' || c.name === 'link') {
405 // TODO put placeholders instead
409 // TODO create in correct namespace
410 c.el = parent.ownerDocument.createElement(c.name)
414 // FIXME if attr_whitelist[k]?
415 if (valid_attr_regex.test(k)) {
416 if (!js_attr_regex.test(k)) {
417 c.el.setAttribute(k, v)
421 parent.appendChild(c.el)
422 if (c.children.length) {
423 instantiate_tree(c.children, c.el)
428 for (i = 0; i < remove.length; i++) {
429 // FIXME this deletes the wrong node when siblings are removed
431 results.push(tree.splice(index, 1))
436 function traverse_tree (tree, cb) {
439 for (i = 0; i < tree.length; i++) {
445 if (c.children.length) {
446 done = traverse_tree(c.children, cb)
455 function first_cursor_position (tree) {
458 traverse_tree(tree, function(node, state) {
460 if (node.type === 'text') {
461 cursor = new_cursor_position({n: node, i: 0})
462 if (cursor != null) {
464 return true // done traversing
467 return false // not done traversing
469 return found // maybe null
472 // this will fail when text has non-locatable cursor positions (eg collapsed whitespace)
473 function find_next_cursor_position (tree, cursor) {
474 var found, new_cursor, state_before
475 if (cursor.n.type === 'text' && cursor.n.text.length > cursor.i) {
476 new_cursor = new_cursor_position({n: cursor.n, i: cursor.i + 1})
477 if (new_cursor != null) {
483 traverse_tree(tree, function(node, state) {
484 if (node.type === 'text' && state_before === false) {
485 new_cursor = new_cursor_position({n: node, i: 0})
486 if (new_cursor != null) {
488 return true // done traversing
491 if (node === cursor.n) {
494 return false // not done traversing
502 function last_cursor_position (tree) {
505 traverse_tree(tree, function(node) {
507 if (node.type === 'text') {
508 cursor = new_cursor_position({n: node, i: node.text.length})
509 if (cursor != null) {
513 return false // not done traversing
515 return found // maybe null
518 // this will fail when text has non-locatable cursor positions (eg collapsed whitespace)
519 function find_prev_cursor_position (tree, cursor) {
520 var found, found_prev, new_cursor
521 if (cursor.n.type === 'text' && cursor.i > 0) {
522 new_cursor = new_cursor_position({n: cursor.n, i: cursor.i - 1})
523 if (new_cursor != null) {
529 traverse_tree(tree, function(node) {
530 if (node === cursor.n) {
531 found = found_prev // maybe null
532 return true // done traversing
534 if (node.type === 'text') {
535 new_cursor = new_cursor_position({n: node, i: node.text.length})
536 if (new_cursor != null) {
537 found_prev = new_cursor
540 return false // not done traversing
542 return found // maybe null
545 function find_up_cursor_position (tree, cursor, ideal_x) {
546 var new_cursor, prev_cursor, target_y
548 // go prev until we're higher on y axis
549 while (new_cursor.y >= cursor.y) {
550 new_cursor = find_prev_cursor_position(tree, new_cursor)
551 if (new_cursor == null) {
555 // done early if we're already left of old cursor position
556 if (new_cursor.x <= ideal_x) {
559 target_y = new_cursor.y
560 // search leftward, until we find the closest position
561 // new_cursor is the prev-most position we've checked
562 // prev_cursor is the older value, so it's not as prev as new_cursor
563 while (new_cursor.x > ideal_x && new_cursor.y === target_y) {
564 prev_cursor = new_cursor
565 new_cursor = find_prev_cursor_position(tree, new_cursor)
566 if (new_cursor == null) {
570 // move cursor to prev_cursor or new_cursor
571 if (new_cursor != null) {
572 if (new_cursor.y === target_y) {
573 // both valid, and on the same line, use closest
574 if ((ideal_x - new_cursor.x) < (prev_cursor.x - ideal_x)) {
580 // new_cursor on wrong line, use prev_cursor
584 // can't go any further prev, use prev_cursor
589 function find_down_cursor_position (tree, cursor, ideal_x) {
590 var new_cursor, prev_cursor, target_y
592 // go next until we move on the y axis
593 while (new_cursor.y <= cursor.y) {
594 new_cursor = find_next_cursor_position(tree, new_cursor)
595 if (new_cursor == null) {
599 // done early if we're already right of old cursor position
600 if (new_cursor.x >= ideal_x) {
601 // this would be strange, but could happen due to runaround
604 target_y = new_cursor.y
605 // search rightward, until we find the closest position
606 // new_cursor is the next-most position we've checked
607 // prev_cursor is the older value, so it's not as next as new_cursor
608 while (new_cursor.x < ideal_x && new_cursor.y === target_y) {
609 prev_cursor = new_cursor
610 new_cursor = find_next_cursor_position(tree, new_cursor)
611 if (new_cursor == null) {
615 if (new_cursor != null) {
616 if (new_cursor.y === target_y) {
617 // both valid, and on the same line, use closest
618 if ((new_cursor.x - ideal_x) < (ideal_x - prev_cursor.x)) {
624 // new_cursor on wrong line, use prev_cursor
628 // can't go any further prev, use prev_cursor
633 function xy_to_cursor (tree, xy) {
634 var after, before, bounds, cur, guess_i, i, n, ret
635 for (i = 0; i < tree.length; i++) {
637 if (n.type === 'tag' || n.type === 'text') {
638 bounds = get_el_bounds(n.el)
639 if (xy.x < bounds.x) {
642 if (xy.x > bounds.x + bounds.w) {
645 if (xy.y < bounds.y) {
648 if (xy.y > bounds.y + bounds.h) {
651 if (n.children.length) {
652 ret = xy_to_cursor(n.children, xy)
657 if (n.type === 'text') {
658 // click is within bounding box that contains all text.
659 if (n.text.length === 0) {
660 ret = new_cursor_position({n: n, i: 0})
666 before = new_cursor_position({n: n, i: 0})
667 if (before == null) {
670 after = new_cursor_position({n: n, i: n.text.length})
674 if (xy.y < before.y + before.h && xy.x < before.x) {
675 // console.log 'before first char on first line'
678 if (xy.y > after.y && xy.x > after.x) {
679 // console.log 'after last char on last line'
682 if (xy.y < before.y) {
683 console.log("Warning: click in text bounding box but above first line")
684 continue // above first line (runaround?)
686 if (xy.y > after.y + after.h) {
687 console.log("Warning: click in text bounding box but below last line", xy.y, after.y, after.h)
688 continue // below last line (shouldn't happen?)
690 while (after.i - before.i > 1) {
691 guess_i = Math.round((before.i + after.i) / 2)
692 cur = new_cursor_position({n: n, i: guess_i})
694 console.log("error: failed to find cursor pixel location for", n, guess_i)
698 if (xy.y < cur.y || (xy.y <= cur.y + cur.h && xy.x < cur.x)) {
704 if (before == null) { // signals failure to find a cursor position
707 // which one is closest?
708 if (Math.abs(before.x - xy.x) < Math.abs(after.x - xy.x)) {
719 // browsers collapse these (html5 spec calls these "space characters")
720 function is_space_code (char_code) {
731 function is_space (chr) {
732 return is_space_code(chr.charCodeAt(0))
735 function tree_remove_empty_text_nodes (tree) {
736 var c, empties, i, j, n
738 traverse_tree(tree, function(n) {
739 if (n.type === 'text') {
740 if (n.text.length === 0) {
744 return false // not done traversing
746 for (i = 0; i < empties.length; i++) {
748 // don't completely empty the tree
749 if (tree.length === 1) {
750 if (tree[0].type === 'text') {
751 console.log("oop, leaving a blank node because it's the only thing")
755 n.el.parentNode.removeChild(n.el)
756 ref = n.parent.children
757 for (j = 0; j < ref.length; ++j) {
760 n.parent.children.splice(j, 1)
767 function PeachHTML5Editor (in_el, options) {
768 // Options: (all optional)
769 // editor_id: "id" attribute for outer-most element created by/for editor
770 // css_file: filename of a css file to style editable content
771 // on_init: callback for when the editable content is in place
772 var css, opt_fragment, outer_bounds, outer_iframe_style, outer_wrap
773 this.options = options != null ? options : {}
775 this.tree = null // array of Nodes, all editable content
776 this.tree_parent = null // this.tree is this.children. .el might === this.idoc.body
778 this.init_1_called = false // when iframes have loaded
779 this.outer_iframe // iframe to hold editor
780 this.outer_idoc // "document" object for this.outer_iframe
781 this.wrap2 = null // scrollbar is on this
782 this.wrap2_offset = null
783 this.wrap2_height = null // including padding
784 this.iframe = null // iframe to hold editable content
785 this.idoc = null // "document" object for this.iframe
787 this.cursor_el = null
788 this.cursor_visible = false
789 this.cursor_ideal_x = null
790 this.poll_for_blur_timeout = null
791 opt_fragment = this.options.fragment != null ? this.options.fragment : true
792 this.parser_opts = {}
794 this.parser_opts.fragment = 'body'
796 this.outer_iframe = domify(document, {iframe: {}})
797 outer_iframe_style = 'border: none !important; margin: 0 !important; padding: 0 !important; height: 100% !important; width: 100% !important;'
798 if (this.options.editor_id != null) {
799 this.outer_iframe.setAttribute('id', this.options.editor_id)
801 this.outer_iframe.onload = (function(_this) {
804 _this.outer_idoc = _this.outer_iframe.contentDocument
805 icss = domify(_this.outer_idoc, { style: { children: [
806 domify(_this.outer_idoc, {text: css})
808 _this.outer_idoc.head.appendChild(icss)
809 _this.iframe = domify(_this.outer_idoc, {iframe: {sandbox: 'allow-same-origin allow-scripts'}})
810 _this.iframe.onload = function() {
811 return _this.init_1()
813 timeout(200, function() { // firefox never fires this onload
814 if (!_this.init_1_called) {
815 return _this.init_1()
818 _this.outer_idoc.body.appendChild(
819 domify(_this.outer_idoc, {div: {id: 'wrap1', children: [
820 domify(_this.outer_idoc, {div: {
821 style: "position: absolute; top: 0; left: 1px; font-size: 10px",
822 children: [domify(_this.outer_idoc, {text: "Peach HTML5 Editor"})]
824 _this.wrap2 = domify(_this.outer_idoc, {div: {id: 'wrap2', children: [
825 domify(_this.outer_idoc, {div: {id: 'wrap3', children: [
827 _this.overlay = domify(_this.outer_idoc, { div: { id: 'overlay' }})
834 outer_wrap = domify(document, {div: {"class": 'peach_html5_editor' }})
835 this.in_el.parentNode.appendChild(outer_wrap)
836 outer_bounds = get_el_bounds(outer_wrap)
837 if (outer_bounds.w < 300) {
840 if (outer_bounds.h < 300) {
843 outer_iframe_style += "width: " + outer_bounds.w + "px; height: " + outer_bounds.h + "px;"
844 this.outer_iframe.setAttribute('style', outer_iframe_style)
845 css = this.generate_outer_css({w: outer_bounds.w, h: outer_bounds.h})
846 outer_wrap.appendChild(this.outer_iframe)
848 PeachHTML5Editor.prototype.init_1 = function() { // this.iframe has loaded (but not it's css)
850 this.idoc = this.iframe.contentDocument
851 this.init_1_called = true
852 // chromium doesn't resolve relative urls as though they were at the same domain
853 // so add a <base> tag
854 this.idoc.head.appendChild(domify(this.idoc, {base: {href: this_url_sans_path()}}))
855 // don't let @iframe have scrollbars
856 this.idoc.head.appendChild(domify(this.idoc, {style: {children: [
857 domify(this.idoc, {text: "body { overflow: hidden; }"})
859 if (this.options.css_file) {
860 istyle = domify(this.idoc, {link: {rel: 'stylesheet', href: this.options.css_file}})
861 istyle.onload = (function(_this) {
863 return _this.init_2()
866 this.idoc.head.appendChild(istyle)
871 PeachHTML5Editor.prototype.init_2 = function() { // this.iframe and it's css file(s) are ready
872 this.overlay.onclick = (function(_this) {
875 return event_return(e, _this.onclick(e))
878 this.overlay.ondoubleclick = (function(_this) {
881 return event_return(e, _this.ondoubleclick(e))
884 this.outer_idoc.body.onkeyup = (function(_this) {
887 return event_return(e, _this.onkeyup(e))
890 this.outer_idoc.body.onkeydown = (function(_this) {
893 return event_return(e, _this.onkeydown(e))
896 this.outer_idoc.body.onkeypress = (function(_this) {
899 return event_return(e, _this.onkeypress(e))
902 this.load_html(this.in_el.value)
903 if (this.options.on_init != null) {
904 return this.options.on_init()
907 PeachHTML5Editor.prototype.generate_outer_css = function(args) {
908 var frame_width, h, inner_padding, occupy, ret, w
909 w = args.w != null ? args.w : 300
910 h = args.h != null ? args.h : 300
911 inner_padding = args.inner_padding != null ? args.inner_padding : overlay_padding
912 frame_width = args.frame_width != null ? args.frame_width : inner_padding
913 occupy = function(left, top, right, bottom) {
920 if (bottom == null) {
925 return Math.max(left, top, right, bottom)
931 ret += 'color: black;'
932 ret += 'background: white;'
935 ret += "border: " + (occupy(1)) + "px solid black;"
936 ret += "padding: " + (occupy(frame_width)) + "px;"
939 ret += "border: " + (occupy(1)) + "px solid black;"
940 this.wrap2_height = h // including padding because padding scrolls
941 ret += "padding: " + (occupy(inner_padding)) + "px;"
942 ret += "padding-right: " + (inner_padding + occupy(0, 0, 15, 0)) + "px;"
943 ret += "width: " + w + "px;"
944 ret += "height: " + h + "px;"
945 ret += 'overflow-x: hidden;'
946 ret += 'overflow-y: scroll;'
949 ret += 'position: relative;'
950 ret += "width: " + w + "px;"
951 ret += "min-height: " + h + "px;"
954 ret += 'box-sizing: border-box;'
956 ret += 'border: none;'
958 ret += "width: " + w + "px;"
959 //ret += "height: " + h + "px;" // height auto-set when content set/changed
960 ret += '-ms-user-select: none;'
961 ret += '-webkit-user-select: none;'
962 ret += '-moz-user-select: none;'
963 ret += 'user-select: none;'
966 ret += 'position: absolute;'
967 ret += "left: -" + inner_padding + "px;"
968 ret += "top: -" + inner_padding + "px;"
969 ret += "right: -" + inner_padding + "px;"
970 ret += "bottom: -" + inner_padding + "px;"
971 ret += 'overflow: hidden;'
974 ret += 'position: absolute;'
975 ret += 'background: rgba(100,100,100,0.2);'
978 ret += 'position: absolute;'
980 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));'
981 ret += 'background-size: 200% 200%;'
982 ret += '-webkit-animation: blink 1s linear normal infinite;'
983 ret += 'animation: blink 1s linear normal infinite;'
985 ret += '@-webkit-keyframes blink {'
986 ret += '0%{background-position:0% 0%}'
987 ret += '100%{background-position:0% -100%}'
989 ret += '@keyframes blink { '
990 ret += '0%{background-position:0% 0%}'
991 ret += '100%{background-position:0% -100%}'
995 ret += 'position: absolute;'
996 ret += 'border: 1px solid rgba(0,0,0,0.1);'
997 ret += 'outline: 1px solid rgba(255,255,255,0.1);' // in case there's a black background
1000 ret += 'z-index: 10;'
1001 ret += 'position: absolute;'
1002 ret += 'font-size: 8px;'
1003 ret += 'white-space: pre;'
1004 ret += 'background: rgba(255,255,255,0.4);'
1005 ret += '-ms-user-select: none;'
1006 ret += '-webkit-user-select: none;'
1007 ret += '-moz-user-select: none;'
1008 ret += 'user-select: none;'
1012 PeachHTML5Editor.prototype.overlay_event_to_inner_xy = function(e) {
1014 if (this.wrap2_offset == null) {
1015 this.wrap2_offset = get_el_bounds(this.wrap2)
1017 x = e.pageX - overlay_padding
1018 y = e.pageY - overlay_padding + this.wrap2.scrollTop
1020 x: x - this.wrap2_offset.x,
1021 y: y - this.wrap2_offset.y
1024 PeachHTML5Editor.prototype.onclick = function(e) {
1026 xy = this.overlay_event_to_inner_xy(e)
1027 new_cursor = xy_to_cursor(this.tree, xy)
1028 if (new_cursor != null) {
1029 this.move_cursor(new_cursor)
1035 PeachHTML5Editor.prototype.ondoubleclick = function(e) {
1038 PeachHTML5Editor.prototype.onkeyup = function(e) {
1042 if (ignore_key_codes[e.keyCode] != null) {
1045 //return false if control_key_codes[e.keyCode] != null
1047 PeachHTML5Editor.prototype.onkeydown = function(e) {
1048 var new_cursor, saved_ideal_x
1052 if (ignore_key_codes[e.keyCode] != null) {
1055 //return false if control_key_codes[e.keyCode] != null
1056 switch (e.keyCode) {
1058 if (this.cursor != null) {
1059 new_cursor = find_prev_cursor_position(this.tree, this.cursor)
1061 new_cursor = first_cursor_position(this.tree)
1063 if (new_cursor != null) {
1064 this.move_cursor(new_cursor)
1068 if (this.cursor != null) {
1069 new_cursor = find_next_cursor_position(this.tree, this.cursor)
1071 new_cursor = last_cursor_position(this.tree)
1073 if (new_cursor != null) {
1074 this.move_cursor(new_cursor)
1078 if (this.cursor != null) {
1079 new_cursor = find_up_cursor_position(this.tree, this.cursor, this.cursor_ideal_x)
1080 if (new_cursor != null) {
1081 saved_ideal_x = this.cursor_ideal_x
1082 this.move_cursor(new_cursor)
1083 this.cursor_ideal_x = saved_ideal_x
1086 // move cursor to first position in document
1087 new_cursor = first_cursor_position(this.tree)
1088 if (new_cursor != null) {
1089 this.move_cursor(new_cursor)
1094 if (this.cursor != null) {
1095 new_cursor = find_down_cursor_position(this.tree, this.cursor, this.cursor_ideal_x)
1096 if (new_cursor != null) {
1097 saved_ideal_x = this.cursor_ideal_x
1098 this.move_cursor(new_cursor)
1099 this.cursor_ideal_x = saved_ideal_x
1102 // move cursor to first position in document
1103 new_cursor = last_cursor_position(this.tree)
1104 if (new_cursor != null) {
1105 this.move_cursor(new_cursor)
1110 new_cursor = last_cursor_position(this.tree)
1111 if (new_cursor != null) {
1112 this.move_cursor(new_cursor)
1116 this.on_key_backspace(e)
1119 if (this.cursor == null) {
1122 new_cursor = find_next_cursor_position(this.tree, {n: this.cursor.n, i: this.cursor.i})
1123 // try moving cursor right and then running backspace code
1124 // TODO replace this hack with a real implementation
1125 if (new_cursor != null) {
1126 // try to detect common case where cursor goes inside an block,
1127 // but doesn't pass a character (and advance one more in that case)
1128 if (new_cursor.n !== this.cursor.n && new_cursor.i === 0) {
1129 if (new_cursor.n.type === 'text' && new_cursor.n.text.length > 0) {
1130 if (new_cursor.n.parent != null) {
1131 if (!this.is_display_block(new_cursor.n.parent)) {
1132 // FIXME should test run sibling
1133 new_cursor = new_cursor_position({n: new_cursor.n, i: new_cursor.i + 1})
1139 if (new_cursor != null) {
1140 if (new_cursor.n !== this.cursor.n || new_cursor.i !== this.cursor.i) {
1141 this.move_cursor(new_cursor)
1142 this.on_key_backspace(e)
1147 this.on_key_enter(e)
1153 new_cursor = first_cursor_position(this.tree)
1154 if (new_cursor != null) {
1155 this.move_cursor(new_cursor)
1161 this.on_page_up_key(e)
1164 this.on_page_down_key(e)
1170 PeachHTML5Editor.prototype.onkeypress = function(e) {
1171 var char, new_cursor
1175 if (ignore_key_codes[e.keyCode] != null) {
1178 char = e.charCode != null ? e.charCode : e.keyCode
1179 if (char && (this.cursor != null)) {
1180 char = String.fromCharCode(char)
1181 this.insert_character(this.cursor.n, this.cursor.i, char)
1182 this.text_cleanup(this.cursor.n)
1184 new_cursor = new_cursor_position({n: this.cursor.n, i: this.cursor.i + 1})
1186 this.move_cursor(new_cursor)
1188 console.log("ERROR: couldn't find cursor position after insert")
1194 PeachHTML5Editor.prototype.on_key_enter = function(e) { // enter key pressed
1195 var before, cur_block, i, n, new_cursor, new_node, new_text, parent_el, pc
1196 if (!this.cursor_visible) {
1199 cur_block = this.cursor.n
1201 if (cur_block.type === 'tag') {
1202 if (is_display_block(cur_block.el)) {
1206 if (cur_block.parent == null) {
1209 cur_block = cur_block.parent
1211 // find array to insert new element into
1212 if (cur_block.parent === this.tree_parent) {
1213 parent_el = this.idoc.body
1216 parent_el = cur_block.parent.el
1217 pc = cur_block.parent.children
1219 for (i = 0; i < pc.length; ++i) {
1221 if (n === cur_block) {
1225 i += 1 // we want to be after it
1226 if (i < pc.length) {
1231 // TODO if content after cursor
1232 // TODO new block is empty
1233 new_text = new peach_parser.Node('text', {text: ' '})
1234 new_node = new peach_parser.Node('tag', {
1236 parent: cur_block.parent,
1237 attrs: {style: 'white-space: pre-wrap'},
1238 children: [new_text]
1240 new_text.parent = new_node
1241 new_text.el = domify(this.idoc, {text: ' '})
1242 new_node.el = domify(this.idoc, {p: {style: 'white-space: pre-wrap', children: [new_text.el]}})
1243 pc.splice(i, 0, new_node)
1244 parent_el.insertBefore(new_node.el, before)
1246 new_cursor = new_cursor_position({
1250 if (new_cursor == null) {
1253 this.move_cursor(new_cursor)
1254 // TODO move content past cursor into this new block
1257 // unlike the global function, this takes a Node, not an element
1258 PeachHTML5Editor.prototype.is_display_block = function(n) {
1259 // TODO stop calling global function, merge it into here, use iframe's window object
1260 if (n.type !== 'tag') {
1263 return is_display_block(n.el)
1265 PeachHTML5Editor.prototype.find_block_parent = function(n) {
1271 if (this.is_display_block(n)) {
1274 if (n === this.tree_parent) {
1280 // return a flat array of nodes (text, <br>, and later also inline-block)
1281 // that are flowing/wrapping together. n can be the containing block, or any
1282 // element inside it.
1283 PeachHTML5Editor.prototype.get_text_run = function(n) {
1286 if (this.is_display_block(n)) {
1289 block = this.find_block_parent(n)
1290 if (block == null) {
1294 traverse_tree(block.children, (function(_this) { return function(n) {
1296 if (n.type === 'text') {
1298 } else if (n.type === 'tag') {
1299 if (n.name === 'br') {
1302 disp = _this.computed_style(n)
1303 if (disp === 'inline-block') {
1308 return false // not done traversing
1312 PeachHTML5Editor.prototype.node_is_decendant = function(young, old) {
1313 while (young != null && young !== this.tree_parent) {
1314 if (young === old) {
1317 young = young.parent
1321 // helper for on_key_backspace
1322 PeachHTML5Editor.prototype._merge_left = function(state) {
1324 // the node prev to n was not prev to it a moment ago, merge with it if reasonable
1325 pi = state.n.parent.children.indexOf(state.n)
1327 prev = state.n.parent.children[pi - 1]
1328 if (prev.type === 'text') {
1329 state.i = prev.text.length
1330 prev.text = prev.el.textContent = prev.text + state.n.text
1331 this.remove_node(state.n)
1333 state.changed = true
1334 state.moved_cursor = true
1337 // else // TODO merge possible consecutive matching inline tags at @cursor
1340 // helper for on_key_backspace
1341 // remove n from the dom, also remove its inline parents that are emptied by removing n
1342 PeachHTML5Editor.prototype._backspace_node_helper = function(n, run, run_i) {
1345 run = this.get_text_run(n)
1347 if (run_i == null) {
1348 run_i = run.indexOf(n)
1350 block = this.find_block_parent(n)
1353 while (n != null && n !== block) {
1354 // bail if the previous node in this run is also inside the same parent
1356 if (this.node_is_decendant(run[run_i - 1], n)) {
1360 // bail if the next node in this run is also inside the same parent
1361 if (run_i + 1 < run.length) {
1362 if (this.node_is_decendant(run[run_i + 1], n)) {
1366 // move any sibling nodes to parent. These nodes are not in the text run
1367 while (n.children.length > 0) {
1368 this.move_node(n.children[0], n.parent, n)
1370 // remove (now completely empty) inline parent
1372 // proceed to outer parent
1376 PeachHTML5Editor.prototype.on_key_backspace = function(e) {
1377 var block, changed, merge_state, n, ncb, need_text_cleanup, new_cursor, pcb, post, pre, prev, prev_cursor, run, run_i
1378 if (this.cursor == null) {
1384 if (this.cursor.i === 0) { // cursor is at start of text node
1386 run = this.get_text_run(this.cursor.n)
1388 run_i = run.indexOf(this.cursor.n)
1389 if (run_i === 0) { // if at start of text run
1390 block = this.find_block_parent(this.cursor.n)
1391 prev_cursor = find_prev_cursor_position(this.tree, {n: this.cursor.n, i: 0})
1392 if (prev_cursor === null) { // if in first text run of document
1393 // do nothing (there's nothing text-like to the left of the cursor)
1396 // else merge with prev/outer text run
1397 pcb = this.find_block_parent(prev_cursor.n)
1398 while (block.children.length > 0) {
1399 this.move_node(block.children[0], pcb)
1401 this.remove_node(block)
1402 // merge possible consecutive text nodes at @cursor
1403 merge_state = {n: this.cursor.n}
1404 this._merge_left(merge_state)
1405 this.text_cleanup(merge_state.n)
1406 new_cursor = new_cursor_position({n: merge_state.n, i: merge_state.i})
1407 } else { // at start of text node, but not start of text run
1408 prev = run[run_i - 1]
1409 if (prev.type === 'text') { // if previous in text run is text
1410 if (prev.text.length === 1) { // if emptying prev (in text run)
1411 this._backspace_node_helper(prev, run, run_i)
1412 merge_state = {n: this.cursor.n, i: this.cursor.i}
1413 this._merge_left(merge_state)
1414 this.text_cleanup(merge_state.n)
1415 new_cursor = new_cursor_position({n: merge_state.n, i: merge_state.i})
1416 } else { // prev in run is text with muliple chars
1417 // delete last character in prev
1418 prev.text = prev.text.substr(0, prev.text.length - 1)
1419 prev.el.textContent = prev.text
1420 this.text_cleanup(this.cursor.n)
1421 new_cursor = new_cursor_position({n: this.cursor.n, i: this.cursor.i})
1423 } else if (prev.name === 'br' || prev.name === 'hr') {
1424 this._backspace_node_helper(prev, run, run_i)
1425 merge_state = {n: this.cursor.n, i: this.cursor.i}
1426 this._merge_left(merge_state)
1427 this.text_cleanup(merge_state.n)
1428 new_cursor = new_cursor_position({n: merge_state.n, i: merge_state.i})
1430 // FIXME implement this:
1431 // else // if prev (in run) is inline-block
1432 // if that inline-block has text in it
1433 // delete last char in prev inlineblock
1434 // if that empties it
1438 // move cursor inside
1440 // delete prev (inline) block
1442 // auto-delete this @cursor.parent(s) if this empties them
1444 } else { // cursor is not at start of text node
1446 run = this.get_text_run(this.cursor.n)
1448 if (this.cursor.n.text.length === 1) { // if emptying text node
1449 if (run.length === 1) { // if emptying text run (of text/br/hr/inline-block)
1450 // remove inline-parents of @cursor.n
1451 block = this.find_block_parent(this.cursor.n)
1453 n = this.cursor.n.parent
1454 // note: this doesn't use _backspace_node_helper because:
1455 // 1. we don't want to delete the target node (we're replacing it's contents)
1456 // 2. we want to track whether anything was removed
1457 // 3. we know already know there's no other text from this run anywhere
1458 while (n && n !== block) {
1460 while (n.children.length > 0) {
1461 this.move_node(n.children[0], n.parent, n)
1466 // replace @cursor.n with a single (preserved) space
1467 if (this.cursor.n.text !== ' ') {
1469 this.cursor.n.text = this.cursor.n.el.textContent = ' '
1472 this.text_cleanup(this.cursor.n)
1474 // place the cursor to the left of that space
1475 new_cursor = new_cursor_position({n: this.cursor.n, i: 0})
1476 } else { // emptying a text node (but not a whole text run)
1477 // figure out where cursor should land
1478 block = this.find_block_parent(this.cursor.n)
1479 new_cursor = find_prev_cursor_position(this.tree, {n: this.cursor.n, i: 0})
1480 ncb = this.find_block_parent(new_cursor.n)
1481 if (ncb !== block) {
1482 new_cursor = find_next_cursor_position(this.tree, {n: this.cursor.n, i: 1})
1484 // delete text node and cleanup emptied parents
1485 run_i = run.indexOf(this.cursor.n)
1486 this._backspace_node_helper(this.cursor.n, run, run_i)
1487 // see if new adjacent siblings should merge
1488 // TODO make smarter
1489 if (run_i > 0 && run_i + 1 < run.length) {
1490 if (run[run_i - 1].type === 'text' && run[run_i + 1].type === 'text') {
1491 merge_state = {n: run[run_i + 1]}
1492 this._merge_left(merge_state)
1493 if (merge_state.moved_cursor) {
1494 new_cursor = merge_state
1498 // update whitespace preservation
1499 this.text_cleanup(block)
1500 // update cursor x/y in case things moved around
1501 if (new_cursor != null) {
1502 if (new_cursor.n.el.parentNode) { // still in dom after cleanup
1503 new_cursor = new_cursor_position({n: new_cursor.n, i: new_cursor.i})
1509 } else { // there's a char left of cursor that we can delete without emptying anything
1511 need_text_cleanup = true
1512 if (this.cursor.i > 1 && this.cursor.i < this.cursor.n.text.length) {
1513 pre = this.cursor.n.text.substr(this.cursor.i - 2, 3)
1514 post = pre.charAt(0) + pre.charAt(2)
1515 if (str_has_ws_run(pre) === str_has_ws_run(post)) {
1516 need_text_cleanup = false
1519 this.remove_character(this.cursor.n, this.cursor.i - 1)
1520 // call text_cleanup if whe created/removed a whitespace run
1521 if (need_text_cleanup) {
1522 this.text_cleanup(this.cursor.n)
1524 new_cursor = new_cursor_position({n: this.cursor.n, i: this.cursor.i - 1})
1527 // mark document changed and move the cursor
1528 if (changed != null) {
1531 if (new_cursor != null) {
1532 this.move_cursor(new_cursor)
1537 PeachHTML5Editor.prototype.on_page_up_key = function(e) {
1538 var new_cursor, screen_y, scroll_amount
1539 if (this.wrap2.scrollTop === 0) {
1540 if (this.cursor == null) {
1543 new_cursor = first_cursor_position(this.tree)
1544 if (new_cursor != null) {
1545 if (new_cursor.n !== this.cursor.n || new_cursor.i !== this.cursor.i) {
1546 this.move_cursor(new_cursor)
1551 if (this.cursor != null) {
1552 screen_y = this.cursor.y - this.wrap2.scrollTop
1554 scroll_amount = this.wrap2_height - breathing_room
1555 this.wrap2.scrollTop = Math.max(0, this.wrap2.scrollTop - scroll_amount)
1556 if (this.cursor != null) {
1557 return this.move_cursor_into_view(screen_y + this.wrap2.scrollTop)
1560 PeachHTML5Editor.prototype.on_page_down_key = function(e) {
1561 var lowest_scrollpos, new_cursor, screen_y, scroll_amount
1562 lowest_scrollpos = this.wrap2.scrollHeight - this.wrap2_height
1563 if (this.wrap2.scrollTop === lowest_scrollpos) {
1564 if (this.cursor == null) {
1567 new_cursor = last_cursor_position(this.tree)
1568 if (new_cursor != null) {
1569 if (new_cursor.n !== this.cursor.n || new_cursor.i !== this.cursor.i) {
1570 this.move_cursor(new_cursor)
1575 if (this.cursor != null) {
1576 screen_y = this.cursor.y - this.wrap2.scrollTop
1578 scroll_amount = this.wrap2_height - breathing_room
1579 this.wrap2.scrollTop = Math.min(lowest_scrollpos, this.wrap2.scrollTop + scroll_amount)
1580 if (this.cursor != null) {
1581 this.move_cursor_into_view(screen_y + this.wrap2.scrollTop)
1584 PeachHTML5Editor.prototype.move_cursor_into_view = function(y_target) {
1585 var cur, far_enough, finder, new_cursor, saved_ideal_x, was, y_max, y_min
1586 if (y_target === this.cursor.y) {
1590 y_min = this.wrap2.scrollTop
1591 if (this.wrap2.scrollTop !== 0) {
1592 y_min += breathing_room
1594 y_max = this.wrap2.scrollTop + this.wrap2_height
1595 if (this.wrap2.scrollTop !== this.wrap2.scrollHeight - this.wrap2_height) { // downmost
1596 y_max -= breathing_room
1598 y_target = Math.min(y_target, y_max)
1599 y_target = Math.max(y_target, y_min)
1600 if (y_target < this.cursor.y) {
1601 finder = find_up_cursor_position
1602 far_enough = function(cur, target_y) {
1603 return cur.y + cur.h <= target_y
1606 finder = find_down_cursor_position
1607 far_enough = function(cur, y_target) {
1608 return cur.y >= y_target
1612 cur = finder(this.tree, was, this.cursor_ideal_x)
1616 if (far_enough(cur, y_target)) {
1621 if (was === this.cursor) {
1625 if (was.y + was.h > y_max) {
1627 } else if (was.y < y_min) {
1632 if (cur.y + cur.h > y_max) {
1634 } else if (cur.y < y_min) {
1638 if ((cur != null) && (was != null)) {
1639 // both valid, pick best
1640 if (cur.y < y_min) {
1642 } else if (was.y + was.h > y_max) {
1644 } else if (cur.y - y_target < y_target - was.y) {
1650 new_cursor = was != null ? was : cur
1652 if (new_cursor != null) {
1653 saved_ideal_x = this.cursor_ideal_x
1654 this.move_cursor(new_cursor)
1655 this.cursor_ideal_x = saved_ideal_x
1658 // remove all the editable content (and cursor, overlays, etc)
1659 PeachHTML5Editor.prototype.clear_dom = function() {
1660 while (this.idoc.body.childNodes.length) {
1661 this.idoc.body.removeChild(this.idoc.body.childNodes[0])
1665 PeachHTML5Editor.prototype.load_html = function(html) {
1666 this.tree = peach_parser(html, this.parser_opts)
1667 if (this.tree[0] == null ? true : this.tree[0].parent == null) {
1668 this.tree = peach_parser('<p style="white-space: pre-wrap"> </p>', this.parser_opts)
1670 this.tree_parent = this.tree[0].parent
1671 this.tree_parent.el = this.idoc.body
1673 instantiate_tree(this.tree, this.tree_parent.el)
1674 this.collapse_whitespace(this.tree)
1675 return this.changed()
1677 PeachHTML5Editor.prototype.changed = function() {
1678 this.in_el.onchange = null
1679 this.in_el.value = this.pretty_html(this.tree)
1680 // TODO make option for not pretty-printing: nodes_to_html(tree)
1681 this.in_el.onchange = (function(_this) { return function() {
1682 return _this.load_html(_this.in_el.value)
1684 return this.adjust_iframe_height()
1686 PeachHTML5Editor.prototype.adjust_iframe_height = function() {
1688 s = this.wrap2.scrollTop
1689 // when the content gets shorter, the idoc's body tag will continue to
1690 // report the old (too big) height in Chrome. The workaround is to
1691 // shrink the iframe before the content height:
1692 this.iframe.style.height = "10px"
1693 h = parseInt(this.idoc.body.scrollHeight, 10)
1694 this.iframe.style.height = h + "px"
1695 return this.wrap2.scrollTop = s
1697 // true if n is text node with only one caracter, and the only child of a tag
1698 PeachHTML5Editor.prototype.is_only_char_in_tag = function(n, i) {
1699 if (n.type !== 'text') {
1702 if (n.text.length !== 1) {
1705 if (n.parent === this.tree_parent) {
1708 if (n.parent.children.length !== 1) {
1713 // true if n is text node with just a space in it, and the only child of a tag
1714 PeachHTML5Editor.prototype.is_lone_space = function(n, i) {
1715 if (n.type !== 'text') {
1718 if (n.text !== ' ') {
1721 if (n.parent === this.tree_parent) {
1724 if (n.parent.children.length !== 1) {
1729 // detect special case: typing before a space that's the only thing in a block/doc
1730 // reason: enter key creates blocks with just a space in them
1731 PeachHTML5Editor.prototype.insert_should_replace = function(n, i) {
1735 if (n.text !== ' ') {
1738 if (n.parent === this.tree_parent) {
1741 if (n.parent.children.length === 1) {
1742 if (n.parent.children[0] === n) {
1749 // WARNING: after calling this, you MUST call changed() and text_cleanup()
1750 PeachHTML5Editor.prototype.insert_character = function(n, i, char) {
1751 if (n.parent === this.tree_parent) {
1752 // FIXME implement text nodes at top level
1755 // insert the character
1756 if (this.insert_should_replace(n, i)) {
1758 } else if (i === 0) {
1759 n.text = char + n.text
1760 } else if (i === n.text.length) {
1763 n.text = n.text.substr(0, i) + char + n.text.substr(i)
1765 return n.el.nodeValue = n.text
1767 // WARNING: after calling this, you MUST call changed() and text_cleanup()
1768 PeachHTML5Editor.prototype.remove_character = function(n, i) {
1769 n.text = n.text.substr(0, i) + n.text.substr(i + 1)
1770 return n.el.nodeValue = n.text
1772 PeachHTML5Editor.prototype.computed_style = function(n, prop) {
1774 if (n.type === 'text') {
1777 style = this.iframe.contentWindow.getComputedStyle(n.el, null)
1778 return style.getPropertyValue(prop)
1780 // returns the new white-space value that will preserve spaces for node n
1781 PeachHTML5Editor.prototype.preserve_space = function(n, ideal_target) {
1783 if (n.type === 'text') {
1788 while (target !== ideal_target && !target.el.style.whiteSpace) {
1789 if (target == null) {
1790 console.log("bug #967123")
1793 target = target.parent
1795 ws = (ref = ws_props[target.el.style.whiteSpace]) != null ? ref.to_preserve : null
1799 target.el.style.whiteSpace = ws
1800 this.update_style_from_el(target)
1803 PeachHTML5Editor.prototype.update_style_from_el = function(n) {
1805 style = n.el.getAttribute('style')
1806 if (style != null) {
1807 return n.attrs.style = style
1809 if (n.attrs.style != null) {
1810 return delete n.attrs.style
1814 // remove whitespace that would be trimmed
1815 // replace whitespace that would collapse with a single space
1816 // FIXME remove whitespace from after <br> (but not before)
1818 // check computed white-space prop on txt parents
1819 // batch replace txt node contents (ie don't loop for each char)
1820 PeachHTML5Editor.prototype.collapse_whitespace = function(tree) {
1821 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
1825 prev = cur = next = null
1826 prev_i = cur_i = next_i = 0
1827 prev_pos = pos = next_pos = null
1828 prev_px = cur_px = next_px = null
1832 tree_remove_empty_text_nodes(tree)
1834 iterate = function(tree, cb) {
1835 var advance, block, i, j, n
1836 for (j = 0; j < tree.length; j++) {
1838 if (n.type === 'text') {
1840 while (i < n.text.length) { // don't foreach, cb might remove chars
1847 if (n.type === 'tag') {
1848 block = is_display_block(n.el)
1852 if (n.children.length > 0) {
1853 iterate(n.children, cb)
1862 remove = function(undo) {
1864 cur.el.textContent = cur.text = (cur.text.substr(0, cur_i)) + removed_char + (cur.text.substr(cur_i))
1865 if (next === cur) { // in same text node
1870 removed_char = cur.text.charAt(cur_i)
1871 cur.el.textContent = cur.text = (cur.text.substr(0, cur_i)) + (cur.text.substr(cur_i + 1))
1872 if (next === cur) { // in same text node
1874 throw "how is this possible?"
1881 replace_with_space = function(undo) {
1883 cur.text = (cur.text.substr(0, cur_i)) + removed_char + (cur.text.substr(cur_i + 1))
1884 cur.el.textContent = cur.text
1886 removed_char = cur.text.charAt(cur_i)
1887 if (removed_char !== ' ') {
1888 cur.text = (cur.text.substr(0, cur_i)) + ' ' + (cur.text.substr(cur_i + 1))
1889 cur.el.textContent = cur.text
1894 // return true if cur was removed from the dom (ie re-use same prev)
1895 operate = function() {
1896 // cur definitately set
1897 // prev and/or next might be null, indicating the start/end of a display:block
1898 var bounds, dbg, fixer, fixers, i, need_undo, new_next_px, new_prev_px, removed, undo_arg
1899 if (!is_space_code(cur.text.charCodeAt(cur_i))) {
1902 fixers = [remove, replace_with_space]
1903 // check for common case: single whitespace surrounded by non-whitespace chars
1904 if ((prev != null) && (next != null)) {
1905 if (!((is_space_code(prev.text.charCodeAt(prev_i))) || (is_space_code(next.text.charCodeAt(next_i))))) {
1906 dbg = cur.text.charCodeAt(cur_i)
1907 if (cur.text.charAt(cur_i) === ' ') {
1910 fixers = [replace_with_space]
1914 bounds = text_range_bounds(cur.el, cur_i, cur_i + 1)
1915 // consistent cases:
1916 // 1. zero rects returned by getClientRects() means collapsed space
1917 if (bounds === null) {
1920 // 2. width greater than zero means visible space
1922 // has bounds, don't try removing
1923 fixers = [replace_with_space]
1925 // now the weird edge cases...
1927 // firefox and chromium both report zero width for characters at the end
1928 // of a line where the text wraps (automatically, due to word-wrap) to
1929 // the next line. These do not appear to be distinguishable from
1930 // collapsed spaces via the range/bounds api, so...
1932 // remove it from the dom, and if prev or next moves, put it back.
1934 // this block (try changing it, put it back if something moves) is also
1935 // used on collapsable whitespace characters besides space. In this case
1936 // the character is replaced with a normal space character instead of
1938 if ((prev != null) && (prev_px == null)) {
1939 prev_px = new_cursor_position({n: prev, i: prev_i})
1941 if ((next != null) && (next_px == null)) {
1942 next_px = new_cursor_position({n: next, i: next_i})
1944 //if prev is null and next is null
1945 // parent_px = cur.parent.el.getBoundingClientRect()
1946 undo_arg = true // just for readabality
1948 for (i = 0; i < fixers.length; i++) {
1956 if (prev_px != null) {
1957 new_prev_px = new_cursor_position({n: prev, i: prev_i})
1958 if (new_prev_px != null) {
1959 if (new_prev_px.x !== prev_px.x || new_prev_px.y !== prev_px.y) {
1966 console.log("this shouldn't happen, we remove spaces that don't locate")
1969 if ((next != null) && !need_undo) {
1970 if (next_px != null) {
1971 new_next_px = new_cursor_position({n: next, i: next_i})
1972 if (new_next_px != null) {
1973 if (new_next_px.x !== next_px.x || new_next_px.y !== next_px.y) {
1981 // console.log "removing space becase space after it is collapsed"
1984 removed += fixer(undo_arg)
1993 // pass null at start/end of display:block
1994 queue = function(n, i) {
1995 var advance, removed
2002 // don't advance (to the next character next time) if we removed a
2003 // character from the same text node as ``next``, because doing so
2004 // renumbers the indexes in that string
2005 if (removed && cur === next) {
2022 iterate(tree, queue)
2025 tree_remove_empty_text_nodes(tree)
2027 // call this after you insert or remove inline nodes. It will:
2028 // merge consecutive text nodes
2029 // remove empty text nodes
2030 // adjust white-space property
2031 // note: this assumes that all whitespace in text nodes should be displayed
2032 // (ie not collapse or be trimmed) and will change the white-space property
2033 // as needed to achieve this.
2034 PeachHTML5Editor.prototype.text_cleanup = function(n) {
2035 var block, eats_start_sp, i, last, n_i, need_preserve, prev, prev_i, run, ws
2036 if (this.is_display_block(n)) {
2039 block = this.find_block_parent(n)
2040 if (block == null) {
2044 run = this.get_text_run(block)
2048 // merge consecutive text elements
2049 if (run.length > 1) {
2052 while (i < run.length) {
2054 if (prev.type === 'text' && n.type === 'text') {
2055 if (prev.parent === n.parent) {
2056 prev_i = n.parent.children.indexOf(prev)
2057 n_i = n.parent.children.indexOf(n)
2058 if (n_i === prev_i + 1) {
2059 prev.text = prev.text + n.text
2060 prev.el.textContent = prev.text
2063 continue // don't increment i or change prev
2071 // remove empty text nodes
2073 while (i < run.length) {
2075 if (n.type === 'text') {
2076 if (n.text === '') {
2078 // FIXME maybe remove parents recursively if this makes them empty
2080 continue // don't increment i
2085 // note: inline tags can have white-space:pre-line/etc
2086 // note: inline-blocks have their whitespace collapsed independantly of outer run
2087 // note: inline-blocks are treated like non-whitespace char even if empty
2088 if (block.el.style.whiteSpace != null) {
2089 ws = block.el.style.whiteSpace
2091 if (ws_props[ws].space) {
2092 if (ws_props[ws].to_collapse === 'normal') {
2093 block.el.style.whiteSpace = null
2095 block.el.style.whiteSpace = ws_props[ws].to_collapse
2097 this.update_style_from_el(block)
2101 // note: space after <br> colapses, but not space before
2102 // check for spaces that would collapse without help
2103 eats_start_sp = true // if the next node starts with space it collapses (unless pre)
2105 for (i = 0; i < run.length; ++i) {
2107 if (n.type === 'tag') {
2108 if (n.name === 'br') {
2109 eats_start_sp = true
2111 eats_start_sp = false
2114 need_preserve = false
2115 if (n.type !== 'text') {
2116 console.log("bug #232308")
2119 if (eats_start_sp) {
2120 if (is_space_code(n.text.charCodeAt(0))) {
2121 need_preserve = true
2124 if (!need_preserve) {
2125 need_preserve = multi_sp_regex.test(n.text)
2127 if (need_preserve) {
2128 // do we have it already?
2129 ws = this.computed_style(n, 'white-space') // FIXME implement this
2130 if (ws_props[ws] != null ? !ws_props[ws].space : true) {
2131 // 2nd arg is ideal target for css rule
2132 ws = this.preserve_space(n, block)
2134 eats_start_sp = false
2136 if (is_space_code(n.text.charCodeAt(n.text.length - 1))) {
2137 ws = this.computed_style(n, 'white-space') // FIXME implement this
2138 if ((ref1 = ws_props[ws]) != null ? ref1.space : void 0) {
2139 eats_start_sp = false
2141 eats_start_sp = true
2144 eats_start_sp = false
2149 // check if text ends with a collapsable space
2150 if (run.length > 0) {
2151 last = run[run.length - 1]
2152 if (last.type === 'text') {
2153 if (eats_start_sp) {
2154 this.preserve_space(last, block)
2159 PeachHTML5Editor.prototype.css_clear = function(n, prop) {
2160 var css_delimiter_regex, i, styles
2161 if (n.attrs.style == null) {
2164 if (n.attrs.style === '') {
2167 css_delimiter_regex = new RegExp('\s*;\s*', 'g') // FIXME make this global
2168 styles = n.attrs.style.trim().split(css_delimiter)
2169 if (!(styles.length > 0)) {
2172 if (styles[styles.length - 1] === '') {
2174 if (!(styles.length > 0)) {
2179 while (i < styles.length) {
2180 if (styles[i].substr(0, 12) === 'white-space:') {
2187 // WARNING: after calling this one or more times, you MUST:
2188 // if it's inline: call @text_cleanup
2190 PeachHTML5Editor.prototype.remove_node = function(n) {
2192 i = n.parent.children.indexOf(n)
2194 throw "BUG #9187112313"
2196 n.el.parentNode.removeChild(n.el)
2197 n.parent.children.splice(i, 1)
2199 // remove a node from the tree/dom, insert into new_parent before insert_before?end
2200 // WARNING: after calling this one or more times, you MUST:
2201 // if it's inline: call @text_cleanup
2203 PeachHTML5Editor.prototype.move_node = function(n, new_parent, insert_before) {
2205 if (insert_before == null) {
2206 insert_before = null
2208 i = n.parent.children.indexOf(n)
2210 throw "Error: tried to remove node, but it's not in it's parents list of children"
2213 if (insert_before != null) {
2214 before_i = new_parent.children.indexOf(insert_before)
2216 throw "Error: tried to move a node to be before a non-existent node"
2218 insert_before = insert_before.el
2221 if (insert_before != null) {
2222 new_parent.el.insertBefore(n.el, insert_before)
2223 new_parent.children.splice(before_i, 0, n)
2225 new_parent.el.appendChild(n.el, insert_before)
2226 new_parent.children.push(n)
2228 n.parent = new_parent
2230 // remove it, forget where it was
2231 PeachHTML5Editor.prototype.kill_cursor = function() {
2232 if (this.cursor_visible) {
2233 this.cursor_el.parentNode.removeChild(this.cursor_el)
2234 this.cursor_visible = false
2239 PeachHTML5Editor.prototype.move_cursor = function(cursor) {
2241 this.cursor_ideal_x = cursor.x
2242 this.cursor = cursor
2243 if (!this.cursor_visible) {
2244 this.cursor_el = domify(this.outer_idoc, {div: { id: 'cursor'}})
2245 this.overlay.appendChild(this.cursor_el)
2246 this.cursor_visible = true
2248 this.cursor_el.style.left = (cursor.x + overlay_padding - 1) + "px"
2254 this.cursor_el.style.top = (cursor.y + overlay_padding + Math.round(height * .07)) + "px"
2255 this.cursor_el.style.height = (Math.round(height * 0.82)) + "px"
2256 this.annotate(cursor.n)
2257 this.scroll_into_view(cursor.y, height)
2259 PeachHTML5Editor.prototype.scroll_into_view = function(y, h) {
2260 var downmost, upmost
2264 y += overlay_padding // convert units from @idoc to @wrap2
2265 // very top of document
2266 if (y <= breathing_room) {
2267 this.wrap2.scrollTop = 0
2270 // very bottom of document
2271 if (y + h >= this.wrap2.scrollHeight - breathing_room) {
2272 this.wrap2.scrollTop = this.wrap2.scrollHeight - this.wrap2_height
2275 // The most scrolled up (lowest value for scrollTop) that would be OK
2276 upmost = y + h + breathing_room - this.wrap2_height
2277 upmost = Math.max(upmost, 0)
2278 // the most scrolled down (highest value for scrollTop) that would be OK
2279 downmost = y - breathing_room
2280 downmost = Math.min(downmost, this.wrap2.scrollHeight - this.wrap2_height)
2281 if (upmost > downmost) { // means h is too big to fit
2282 // scroll so top is visible
2283 this.wrap2.scrollTop = downmost
2286 if (this.wrap2.scrollTop < upmost) {
2287 this.wrap2.scrollTop = upmost
2290 if (this.wrap2.scrollTop > downmost) {
2291 this.wrap2.scrollTop = downmost
2295 PeachHTML5Editor.prototype.annotate = function(n) {
2296 var alpha, ann_box, ann_tag, bounds, prev_bounds
2297 while (this.matting.length > 0) {
2298 this.overlay.removeChild(this.matting[0])
2299 this.matting.shift()
2304 prev_bounds = {x: 0, y: 0, w: 0, h: 0}
2306 while (((n != null ? n.el : void 0) != null) && n !== this.tree_parent) {
2307 if (n.type === 'text') {
2311 bounds = get_el_bounds(n.el)
2312 if (bounds == null) {
2315 if (bounds.x === prev_bounds.x && bounds.y === prev_bounds.y && bounds.w === prev_bounds.w && bounds.h === prev_bounds.h) {
2319 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});
2320 this.overlay.appendChild(ann_box)
2321 this.matting.push(ann_box)
2322 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 + " "})]}})
2323 this.overlay.appendChild(ann_tag)
2324 this.matting.push(ann_tag)
2329 PeachHTML5Editor.prototype.pretty_html = function(tree, indent, parent_flags) {
2330 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
2331 if (indent == null) {
2334 if (parent_flags == null) {
2342 want_nl = parent_flags.want_nl
2343 prev_in_flow_is_text = false
2344 prev_in_flow_is_block = false
2345 for (i = 0; i < tree.length; ++i) {
2353 if (n.name === 'br') {
2357 if (n.el.currentStyle != null) {
2358 cs = n.el.currentStyle
2359 whitespace = cs['white-space']
2360 display = cs['display']
2361 position = cs['position']
2363 visibility = cs['visibility']
2365 cs = this.iframe.contentWindow.getComputedStyle(n.el, null)
2366 whitespace = cs.getPropertyValue('white-space')
2367 display = cs.getPropertyValue('display')
2368 position = cs.getPropertyValue('position')
2369 float = cs.getPropertyValue('float')
2370 visibility = cs.getPropertyValue('visibility')
2372 if (n.name === 'textarea') {
2373 inner_flags.pre_ish = true
2375 inner_flags.pre_ish = whitespace.substr(0, 3) === 'pre'
2389 if ('display' === 'none') {
2392 switch (visibility) {
2406 inner_flags.block = false
2407 is_block = in_flow_block = false
2409 case 'inline-black':
2410 inner_flags.block = true
2411 is_block = in_flow_block = false
2414 inner_flags.block = true
2416 in_flow_block = in_flow
2423 in_flow_block = false
2425 default: // 'comment', 'doctype'
2429 in_flow_block = false
2431 // print whitespace if we can
2432 if (!parent_flags.pre_ish) {
2433 if (!(prev_in_flow_is_text && is_br)) {
2434 if ((i === 0 && parent_flags.block) || in_flow_block || prev_in_flow_is_block) {
2446 for (k in n.attrs) {
2447 attr_keys.unshift(k)
2450 for (j = 0; j < attr_keys.length; ++j) {
2453 if (n.attrs[k].length > 0) {
2454 ret += "=\"" + (enc_attr(n.attrs[k])) + "\""
2458 if (void_elements[n.name] == null) {
2459 if (inner_flags.block) {
2460 next_indent = indent + ' '
2462 next_indent = indent
2464 if (n.children.length) {
2465 ret += this.pretty_html(n.children, next_indent, inner_flags)
2467 ret += "</" + n.name + ">"
2471 ret += enc_text(n.text)
2474 ret += "<!--" + n.text + "-->" // TODO encode?
2477 ret += "<!DOCTYPE " + n.name
2478 if ((n.public_identifier != null) && n.public_identifier.length > 0) {
2479 ret += " \"" + n.public_identifier + "\""
2481 if ((n.system_identifier != null) && n.system_identifier.length > 0) {
2482 ret += " \"" + n.system_identifier + "\""
2488 prev_in_flow_is_text = is_text
2489 prev_in_flow_is_block = is_block || (in_flow && is_br)
2493 // output final newline if allowed
2494 if (!parent_flags.pre_ish) {
2495 if (prev_in_flow_is_block || parent_flags.block) {
2496 ret += "\n" + (indent.substr(4))
2502 PeachHTML5Editor.prototype.onblur = function() {
2505 PeachHTML5Editor.prototype.have_focus = function() {
2506 this.editor_is_focused = true
2507 this.poll_for_blur()
2509 PeachHTML5Editor.prototype.poll_for_blur = function() {
2510 if (this.poll_for_blur_timeout != null) {
2513 this.poll_for_blur_timeout = timeout(150, (function(_this) { return function() {
2514 next_frame(function() { // pause polling when browser knows we're not active/visible/etc.
2515 _this.poll_for_blur_timeout = null
2516 if (document.activeElement === _this.outer_iframe) {
2517 _this.poll_for_blur()
2519 _this.editor_is_focused = false
2526 window.peach_html5_editor = function() {
2527 // coffeescript: return new PeachHTML5Editor args...
2528 // compiles to below... there must be a better way
2530 args = 1 <= arguments.length ? slice.call(arguments, 0) : []
2531 return (function(func, args, ctor) {
2532 ctor.prototype = func.prototype
2533 var child = new ctor, result = func.apply(child, args)
2534 return Object(result) === result ? result : child
2535 })(PeachHTML5Editor, args, function(){})
2540 // test in browser: peach_html5_editor(document.getElementsByTagName('textarea')[0])