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 var plaintext_elements = {
288 // parser deletes a starting newline inside:
289 var newline_eating_elements = {
295 // this does not pretty-print
296 function nodes_to_html (tree) {
297 var attr_keys, i, k, n, ret
299 for (i = 0; i < tree.length; ++i) {
307 if (n.attrs[k].length > 0) {
308 ret += "=\"" + (enc_attr(n.attrs[k])) + "\""
312 if (void_elements[n.name] == null) {
313 if (n.children.length) {
314 ret += nodes_to_html(n.children)
316 ret += "</" + n.name + ">"
320 if (n.parent != null ? plaintext_elements[n.parent.name] : false) {
322 } else if (n.parent != null ? newline_eating_elements[n.parent.name] && n.text.charAt(0) === "\n" : false) {
323 ret += enc_text("\n" + n.text)
325 ret += enc_text(n.text)
329 ret += "<!--" + n.text + "-->" // TODO encode?
332 ret += "<!DOCTYPE " + n.name
333 if ((n.public_identifier != null) && n.public_identifier.length > 0) {
334 ret += " \"" + n.public_identifier + "\""
336 if ((n.system_identifier != null) && n.system_identifier.length > 0) {
337 ret += " \"" + n.system_identifier + "\""
345 // TODO make these always pretty-print (on the inside) like blocks
346 // TODO careful though: whitespace might get pushed to parent, which might be rendered
347 no_text_elements = { // these elements never contain text
357 function domify (doc, hash) {
358 var attrs, el, i, k, tag, v
361 if (tag === 'text') {
362 return document.createTextNode(attrs)
364 el = document.createElement(tag)
367 if (k === 'children') {
368 for (i = 0; i < v.length; i++) {
372 el.setAttribute(k, v)
381 '20': true, // capslock
383 '144': true, // numlock
385 '91': true // windows "start" key
387 // key codes: (valid on keydown, not keypress)
392 KEY_BACKSPACE = 8 // <--
393 KEY_DELETE = 46 // -->
402 control_key_codes = { // we react to these, but they aren't typing
419 function instantiate_tree (tree, parent) {
420 var c, i, k, remove, results, v
422 for (i = 0; i < tree.length; ++i) {
426 c.el = parent.ownerDocument.createTextNode(c.text)
427 parent.appendChild(c.el)
430 if (c.name === 'script' || c.name === 'object' || c.name === 'iframe' || c.name === 'link') {
431 // TODO put placeholders instead
435 // TODO create in correct namespace
436 c.el = parent.ownerDocument.createElement(c.name)
440 // FIXME if attr_whitelist[k]?
441 if (valid_attr_regex.test(k)) {
442 if (!js_attr_regex.test(k)) {
443 c.el.setAttribute(k, v)
447 parent.appendChild(c.el)
448 if (c.children.length) {
449 instantiate_tree(c.children, c.el)
454 for (i = 0; i < remove.length; i++) {
455 // FIXME this deletes the wrong node when siblings are removed
457 results.push(tree.splice(index, 1))
462 function traverse_tree (tree, cb) {
465 for (i = 0; i < tree.length; i++) {
471 if (c.children.length) {
472 done = traverse_tree(c.children, cb)
481 function first_cursor_position (tree) {
484 traverse_tree(tree, function(node, state) {
486 if (node.type === 'text') {
487 cursor = new_cursor_position({n: node, i: 0})
488 if (cursor != null) {
490 return true // done traversing
493 return false // not done traversing
495 return found // maybe null
498 // this will fail when text has non-locatable cursor positions (eg collapsed whitespace)
499 function find_next_cursor_position (tree, cursor) {
500 var found, new_cursor, state_before
501 if (cursor.n.type === 'text' && cursor.n.text.length > cursor.i) {
502 new_cursor = new_cursor_position({n: cursor.n, i: cursor.i + 1})
503 if (new_cursor != null) {
509 traverse_tree(tree, function(node, state) {
510 if (node.type === 'text' && state_before === false) {
511 new_cursor = new_cursor_position({n: node, i: 0})
512 if (new_cursor != null) {
514 return true // done traversing
517 if (node === cursor.n) {
520 return false // not done traversing
528 function last_cursor_position (tree) {
531 traverse_tree(tree, function(node) {
533 if (node.type === 'text') {
534 cursor = new_cursor_position({n: node, i: node.text.length})
535 if (cursor != null) {
539 return false // not done traversing
541 return found // maybe null
544 // this will fail when text has non-locatable cursor positions (eg collapsed whitespace)
545 function find_prev_cursor_position (tree, cursor) {
546 var found, found_prev, new_cursor
547 if (cursor.n.type === 'text' && cursor.i > 0) {
548 new_cursor = new_cursor_position({n: cursor.n, i: cursor.i - 1})
549 if (new_cursor != null) {
555 traverse_tree(tree, function(node) {
556 if (node === cursor.n) {
557 found = found_prev // maybe null
558 return true // done traversing
560 if (node.type === 'text') {
561 new_cursor = new_cursor_position({n: node, i: node.text.length})
562 if (new_cursor != null) {
563 found_prev = new_cursor
566 return false // not done traversing
568 return found // maybe null
571 function find_up_cursor_position (tree, cursor, ideal_x) {
572 var new_cursor, prev_cursor, target_y
574 // go prev until we're higher on y axis
575 while (new_cursor.y >= cursor.y) {
576 new_cursor = find_prev_cursor_position(tree, new_cursor)
577 if (new_cursor == null) {
581 // done early if we're already left of old cursor position
582 if (new_cursor.x <= ideal_x) {
585 target_y = new_cursor.y
586 // search leftward, until we find the closest position
587 // new_cursor is the prev-most position we've checked
588 // prev_cursor is the older value, so it's not as prev as new_cursor
589 while (new_cursor.x > ideal_x && new_cursor.y === target_y) {
590 prev_cursor = new_cursor
591 new_cursor = find_prev_cursor_position(tree, new_cursor)
592 if (new_cursor == null) {
596 // move cursor to prev_cursor or new_cursor
597 if (new_cursor != null) {
598 if (new_cursor.y === target_y) {
599 // both valid, and on the same line, use closest
600 if ((ideal_x - new_cursor.x) < (prev_cursor.x - ideal_x)) {
606 // new_cursor on wrong line, use prev_cursor
610 // can't go any further prev, use prev_cursor
615 function find_down_cursor_position (tree, cursor, ideal_x) {
616 var new_cursor, prev_cursor, target_y
618 // go next until we move on the y axis
619 while (new_cursor.y <= cursor.y) {
620 new_cursor = find_next_cursor_position(tree, new_cursor)
621 if (new_cursor == null) {
625 // done early if we're already right of old cursor position
626 if (new_cursor.x >= ideal_x) {
627 // this would be strange, but could happen due to runaround
630 target_y = new_cursor.y
631 // search rightward, until we find the closest position
632 // new_cursor is the next-most position we've checked
633 // prev_cursor is the older value, so it's not as next as new_cursor
634 while (new_cursor.x < ideal_x && new_cursor.y === target_y) {
635 prev_cursor = new_cursor
636 new_cursor = find_next_cursor_position(tree, new_cursor)
637 if (new_cursor == null) {
641 if (new_cursor != null) {
642 if (new_cursor.y === target_y) {
643 // both valid, and on the same line, use closest
644 if ((new_cursor.x - ideal_x) < (ideal_x - prev_cursor.x)) {
650 // new_cursor on wrong line, use prev_cursor
654 // can't go any further prev, use prev_cursor
659 function xy_to_cursor (tree, xy) {
660 var after, before, bounds, cur, guess_i, i, n, ret
661 for (i = 0; i < tree.length; i++) {
663 if (n.type === 'tag' || n.type === 'text') {
664 bounds = get_el_bounds(n.el)
665 if (xy.x < bounds.x) {
668 if (xy.x > bounds.x + bounds.w) {
671 if (xy.y < bounds.y) {
674 if (xy.y > bounds.y + bounds.h) {
677 if (n.children.length) {
678 ret = xy_to_cursor(n.children, xy)
683 if (n.type === 'text') {
684 // click is within bounding box that contains all text.
685 if (n.text.length === 0) {
686 ret = new_cursor_position({n: n, i: 0})
692 before = new_cursor_position({n: n, i: 0})
693 if (before == null) {
696 after = new_cursor_position({n: n, i: n.text.length})
700 if (xy.y < before.y + before.h && xy.x < before.x) {
701 // console.log 'before first char on first line'
704 if (xy.y > after.y && xy.x > after.x) {
705 // console.log 'after last char on last line'
708 if (xy.y < before.y) {
709 console.log("Warning: click in text bounding box but above first line")
710 continue // above first line (runaround?)
712 if (xy.y > after.y + after.h) {
713 console.log("Warning: click in text bounding box but below last line", xy.y, after.y, after.h)
714 continue // below last line (shouldn't happen?)
716 while (after.i - before.i > 1) {
717 guess_i = Math.round((before.i + after.i) / 2)
718 cur = new_cursor_position({n: n, i: guess_i})
720 console.log("error: failed to find cursor pixel location for", n, guess_i)
724 if (xy.y < cur.y || (xy.y <= cur.y + cur.h && xy.x < cur.x)) {
730 if (before == null) { // signals failure to find a cursor position
733 // which one is closest?
734 if (Math.abs(before.x - xy.x) < Math.abs(after.x - xy.x)) {
745 // browsers collapse these (html5 spec calls these "space characters")
746 function is_space_code (char_code) {
757 function is_space (chr) {
758 return is_space_code(chr.charCodeAt(0))
761 function tree_remove_empty_text_nodes (tree) {
762 var c, empties, i, j, n
764 traverse_tree(tree, function(n) {
765 if (n.type === 'text') {
766 if (n.text.length === 0) {
770 return false // not done traversing
772 for (i = 0; i < empties.length; i++) {
774 // don't completely empty the tree
775 if (tree.length === 1) {
776 if (tree[0].type === 'text') {
777 console.log("oop, leaving a blank node because it's the only thing")
781 n.el.parentNode.removeChild(n.el)
782 ref = n.parent.children
783 for (j = 0; j < ref.length; ++j) {
786 n.parent.children.splice(j, 1)
793 function PeachHTML5Editor (in_el, options) {
794 // Options: (all optional)
795 // editor_id: "id" attribute for outer-most element created by/for editor
796 // css_file: filename of a css file to style editable content
797 // on_init: callback for when the editable content is in place
798 var css, opt_fragment, outer_bounds, outer_iframe_style, outer_wrap
799 this.options = options != null ? options : {}
800 this.pretty_print = options.pretty_print != null ? options.pretty_print : true
802 this.tree = null // array of Nodes, all editable content
803 this.tree_parent = null // this.tree is this.children. .el might === this.idoc.body
805 this.init_1_called = false // when iframes have loaded
806 this.outer_iframe // iframe to hold editor
807 this.outer_idoc // "document" object for this.outer_iframe
808 this.wrap2 = null // scrollbar is on this
809 this.wrap2_offset = null
810 this.wrap2_height = null // including padding
811 this.iframe = null // iframe to hold editable content
812 this.idoc = null // "document" object for this.iframe
814 this.cursor_el = null
815 this.cursor_visible = false
816 this.cursor_ideal_x = null
817 this.poll_for_blur_timeout = null
818 opt_fragment = this.options.fragment != null ? this.options.fragment : true
819 this.parser_opts = {}
821 this.parser_opts.fragment = 'body'
823 this.outer_iframe = domify(document, {iframe: {}})
824 outer_iframe_style = 'border: none !important; margin: 0 !important; padding: 0 !important; height: 100% !important; width: 100% !important;'
825 if (this.options.editor_id != null) {
826 this.outer_iframe.setAttribute('id', this.options.editor_id)
828 this.outer_iframe.onload = (function(_this) { return function() {
830 _this.outer_idoc = _this.outer_iframe.contentDocument
831 icss = domify(_this.outer_idoc, { style: { children: [
832 domify(_this.outer_idoc, {text: css})
834 _this.outer_idoc.head.appendChild(icss)
835 _this.iframe = domify(_this.outer_idoc, {iframe: {sandbox: 'allow-same-origin allow-scripts'}})
836 _this.iframe.onload = function() {
837 return _this.init_1()
839 timeout(200, function() { // firefox never fires this onload
840 if (!_this.init_1_called) {
841 return _this.init_1()
844 _this.outer_idoc.body.appendChild(
845 domify(_this.outer_idoc, {div: {id: 'wrap1', children: [
846 domify(_this.outer_idoc, {div: {
847 style: "position: absolute; top: 0; left: 1px; font-size: 10px",
848 children: [domify(_this.outer_idoc, {text: "Peach HTML5 Editor"})]
850 _this.wrap2 = domify(_this.outer_idoc, {div: {id: 'wrap2', children: [
851 domify(_this.outer_idoc, {div: {id: 'wrap3', children: [
853 _this.overlay = domify(_this.outer_idoc, { div: { id: 'overlay' }})
859 outer_wrap = domify(document, {div: {"class": 'peach_html5_editor' }})
860 this.in_el.parentNode.appendChild(outer_wrap)
861 outer_bounds = get_el_bounds(outer_wrap)
862 if (outer_bounds.w < 300) {
865 if (outer_bounds.h < 300) {
868 outer_iframe_style += "width: " + outer_bounds.w + "px; height: " + outer_bounds.h + "px;"
869 this.outer_iframe.setAttribute('style', outer_iframe_style)
870 css = this.generate_outer_css({w: outer_bounds.w, h: outer_bounds.h})
871 outer_wrap.appendChild(this.outer_iframe)
873 PeachHTML5Editor.prototype.init_1 = function() { // this.iframe has loaded (but not it's css)
875 this.idoc = this.iframe.contentDocument
876 this.init_1_called = true
877 // chromium doesn't resolve relative urls as though they were at the same domain
878 // so add a <base> tag
879 this.idoc.head.appendChild(domify(this.idoc, {base: {href: this_url_sans_path()}}))
880 // don't let @iframe have scrollbars
881 this.idoc.head.appendChild(domify(this.idoc, {style: {children: [
882 domify(this.idoc, {text: "body { overflow: hidden; }"})
884 if (this.options.css_file) {
885 istyle = domify(this.idoc, {link: {rel: 'stylesheet', href: this.options.css_file}})
886 istyle.onload = (function(_this) {
888 return _this.init_2()
891 this.idoc.head.appendChild(istyle)
896 PeachHTML5Editor.prototype.init_2 = function() { // this.iframe and it's css file(s) are ready
897 this.overlay.onclick = (function(_this) {
900 return event_return(e, _this.onclick(e))
903 this.overlay.ondoubleclick = (function(_this) {
906 return event_return(e, _this.ondoubleclick(e))
909 this.outer_idoc.body.onkeyup = (function(_this) {
912 return event_return(e, _this.onkeyup(e))
915 this.outer_idoc.body.onkeydown = (function(_this) {
918 return event_return(e, _this.onkeydown(e))
921 this.outer_idoc.body.onkeypress = (function(_this) {
924 return event_return(e, _this.onkeypress(e))
927 this.load_html(this.in_el.value)
928 if (this.options.on_init != null) {
929 return this.options.on_init()
932 PeachHTML5Editor.prototype.generate_outer_css = function(args) {
933 var frame_width, h, inner_padding, occupy, ret, w
934 w = args.w != null ? args.w : 300
935 h = args.h != null ? args.h : 300
936 inner_padding = args.inner_padding != null ? args.inner_padding : overlay_padding
937 frame_width = args.frame_width != null ? args.frame_width : inner_padding
938 occupy = function(left, top, right, bottom) {
945 if (bottom == null) {
950 return Math.max(left, top, right, bottom)
956 ret += 'color: black;'
957 ret += 'background: white;'
958 ret += 'font-family: sans;'
961 ret += "border: " + (occupy(1)) + "px solid black;"
962 ret += "padding: " + (occupy(frame_width)) + "px;"
965 ret += "border: " + (occupy(1)) + "px solid black;"
966 this.wrap2_height = h // including padding because padding scrolls
967 ret += "padding: " + (occupy(inner_padding)) + "px;"
968 ret += "padding-right: " + (inner_padding + occupy(0, 0, 15, 0)) + "px;"
969 ret += "width: " + w + "px;"
970 ret += "height: " + h + "px;"
971 ret += 'overflow-x: hidden;'
972 ret += 'overflow-y: scroll;'
975 ret += 'position: relative;'
976 ret += "width: " + w + "px;"
977 ret += "min-height: " + h + "px;"
980 ret += 'box-sizing: border-box;'
982 ret += 'border: none;'
984 ret += "width: " + w + "px;"
985 //ret += "height: " + h + "px;" // height auto-set when content set/changed
986 ret += '-ms-user-select: none;'
987 ret += '-webkit-user-select: none;'
988 ret += '-moz-user-select: none;'
989 ret += 'user-select: none;'
992 ret += 'position: absolute;'
993 ret += "left: -" + inner_padding + "px;"
994 ret += "top: -" + inner_padding + "px;"
995 ret += "right: -" + inner_padding + "px;"
996 ret += "bottom: -" + inner_padding + "px;"
997 ret += 'overflow: hidden;'
1000 ret += 'position: absolute;'
1001 ret += 'background: rgba(100,100,100,0.2);'
1004 ret += 'position: absolute;'
1005 ret += 'width: 2px;'
1006 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));'
1007 ret += 'background-size: 200% 200%;'
1008 ret += '-webkit-animation: blink 1s linear normal infinite;'
1009 ret += 'animation: blink 1s linear normal infinite;'
1011 ret += '@-webkit-keyframes blink {'
1012 ret += '0%{background-position:0% 0%}'
1013 ret += '100%{background-position:0% -100%}'
1015 ret += '@keyframes blink { '
1016 ret += '0%{background-position:0% 0%}'
1017 ret += '100%{background-position:0% -100%}'
1020 ret += 'z-index: 5;'
1021 ret += 'position: absolute;'
1022 ret += 'border: 1px solid rgba(0,0,0,0.1);'
1023 ret += 'outline: 1px solid rgba(255,255,255,0.1);' // in case there's a black background
1026 ret += 'z-index: 10;'
1027 ret += 'position: absolute;'
1028 ret += 'font-size: 8px;'
1029 ret += 'white-space: pre;'
1030 ret += 'background: rgba(255,255,255,0.4);'
1031 ret += '-ms-user-select: none;'
1032 ret += '-webkit-user-select: none;'
1033 ret += '-moz-user-select: none;'
1034 ret += 'user-select: none;'
1038 PeachHTML5Editor.prototype.overlay_event_to_inner_xy = function(e) {
1040 if (this.wrap2_offset == null) {
1041 this.wrap2_offset = get_el_bounds(this.wrap2)
1043 x = e.pageX - overlay_padding
1044 y = e.pageY - overlay_padding + this.wrap2.scrollTop
1046 x: x - this.wrap2_offset.x,
1047 y: y - this.wrap2_offset.y
1050 PeachHTML5Editor.prototype.onclick = function(e) {
1052 xy = this.overlay_event_to_inner_xy(e)
1053 new_cursor = xy_to_cursor(this.tree, xy)
1054 if (new_cursor != null) {
1055 this.move_cursor(new_cursor)
1061 PeachHTML5Editor.prototype.ondoubleclick = function(e) {
1064 PeachHTML5Editor.prototype.onkeyup = function(e) {
1068 if (ignore_key_codes[e.keyCode] != null) {
1071 //return false if control_key_codes[e.keyCode] != null
1073 PeachHTML5Editor.prototype.onkeydown = function(e) {
1074 var new_cursor, saved_ideal_x
1078 if (ignore_key_codes[e.keyCode] != null) {
1081 //return false if control_key_codes[e.keyCode] != null
1082 switch (e.keyCode) {
1084 if (this.cursor != null) {
1085 new_cursor = find_prev_cursor_position(this.tree, this.cursor)
1087 new_cursor = first_cursor_position(this.tree)
1089 if (new_cursor != null) {
1090 this.move_cursor(new_cursor)
1094 if (this.cursor != null) {
1095 new_cursor = find_next_cursor_position(this.tree, this.cursor)
1097 new_cursor = last_cursor_position(this.tree)
1099 if (new_cursor != null) {
1100 this.move_cursor(new_cursor)
1104 if (this.cursor != null) {
1105 new_cursor = find_up_cursor_position(this.tree, this.cursor, this.cursor_ideal_x)
1106 if (new_cursor != null) {
1107 saved_ideal_x = this.cursor_ideal_x
1108 this.move_cursor(new_cursor)
1109 this.cursor_ideal_x = saved_ideal_x
1112 // move cursor to first position in document
1113 new_cursor = first_cursor_position(this.tree)
1114 if (new_cursor != null) {
1115 this.move_cursor(new_cursor)
1120 if (this.cursor != null) {
1121 new_cursor = find_down_cursor_position(this.tree, this.cursor, this.cursor_ideal_x)
1122 if (new_cursor != null) {
1123 saved_ideal_x = this.cursor_ideal_x
1124 this.move_cursor(new_cursor)
1125 this.cursor_ideal_x = saved_ideal_x
1128 // move cursor to first position in document
1129 new_cursor = last_cursor_position(this.tree)
1130 if (new_cursor != null) {
1131 this.move_cursor(new_cursor)
1136 new_cursor = last_cursor_position(this.tree)
1137 if (new_cursor != null) {
1138 this.move_cursor(new_cursor)
1142 this.on_key_backspace(e)
1145 if (this.cursor == null) {
1148 new_cursor = find_next_cursor_position(this.tree, {n: this.cursor.n, i: this.cursor.i})
1149 // try moving cursor right and then running backspace code
1150 // TODO replace this hack with a real implementation
1151 if (new_cursor != null) {
1152 // try to detect common case where cursor goes inside an block,
1153 // but doesn't pass a character (and advance one more in that case)
1154 if (new_cursor.n !== this.cursor.n && new_cursor.i === 0) {
1155 if (new_cursor.n.type === 'text' && new_cursor.n.text.length > 0) {
1156 if (new_cursor.n.parent != null) {
1157 if (!this.is_display_block(new_cursor.n.parent)) {
1158 // FIXME should test run sibling
1159 new_cursor = new_cursor_position({n: new_cursor.n, i: new_cursor.i + 1})
1165 if (new_cursor != null) {
1166 if (new_cursor.n !== this.cursor.n || new_cursor.i !== this.cursor.i) {
1167 this.move_cursor(new_cursor)
1168 this.on_key_backspace(e)
1173 this.on_key_enter(e)
1179 new_cursor = first_cursor_position(this.tree)
1180 if (new_cursor != null) {
1181 this.move_cursor(new_cursor)
1187 this.on_page_up_key(e)
1190 this.on_page_down_key(e)
1196 PeachHTML5Editor.prototype.onkeypress = function(e) {
1197 var char, new_cursor
1201 if (ignore_key_codes[e.keyCode] != null) {
1204 char = e.charCode != null ? e.charCode : e.keyCode
1205 if (char && (this.cursor != null)) {
1206 char = String.fromCharCode(char)
1207 this.insert_character(this.cursor.n, this.cursor.i, char)
1208 this.text_cleanup(this.cursor.n)
1210 new_cursor = new_cursor_position({n: this.cursor.n, i: this.cursor.i + 1})
1212 this.move_cursor(new_cursor)
1214 console.log("ERROR: couldn't find cursor position after insert")
1220 PeachHTML5Editor.prototype.on_key_enter = function(e) { // enter key pressed
1221 var before, cur_block, i, n, new_cursor, new_node, new_text, parent_el, pc
1222 if (!this.cursor_visible) {
1225 cur_block = this.cursor.n
1227 if (cur_block.type === 'tag') {
1228 if (is_display_block(cur_block.el)) {
1232 if (cur_block.parent == null) {
1235 cur_block = cur_block.parent
1237 // find array to insert new element into
1238 if (cur_block.parent === this.tree_parent) {
1239 parent_el = this.idoc.body
1242 parent_el = cur_block.parent.el
1243 pc = cur_block.parent.children
1245 for (i = 0; i < pc.length; ++i) {
1247 if (n === cur_block) {
1251 i += 1 // we want to be after it
1252 if (i < pc.length) {
1257 // TODO if content after cursor
1258 // TODO new block is empty
1259 new_text = new peach_parser.Node('text', {text: ' '})
1260 new_node = new peach_parser.Node('tag', {
1262 parent: cur_block.parent,
1263 attrs: {style: 'white-space: pre-wrap'},
1264 children: [new_text]
1266 new_text.parent = new_node
1267 new_text.el = domify(this.idoc, {text: ' '})
1268 new_node.el = domify(this.idoc, {p: {style: 'white-space: pre-wrap', children: [new_text.el]}})
1269 pc.splice(i, 0, new_node)
1270 parent_el.insertBefore(new_node.el, before)
1272 new_cursor = new_cursor_position({
1276 if (new_cursor == null) {
1279 this.move_cursor(new_cursor)
1280 // TODO move content past cursor into this new block
1283 // unlike the global function, this takes a Node, not an element
1284 PeachHTML5Editor.prototype.is_display_block = function(n) {
1285 // TODO stop calling global function, merge it into here, use iframe's window object
1286 if (n.type !== 'tag') {
1289 return is_display_block(n.el)
1291 PeachHTML5Editor.prototype.find_block_parent = function(n) {
1297 if (this.is_display_block(n)) {
1300 if (n === this.tree_parent) {
1306 // return a flat array of nodes (text, <br>, and later also inline-block)
1307 // that are flowing/wrapping together. n can be the containing block, or any
1308 // element inside it.
1309 PeachHTML5Editor.prototype.get_text_run = function(n) {
1312 if (this.is_display_block(n)) {
1315 block = this.find_block_parent(n)
1316 if (block == null) {
1320 traverse_tree(block.children, (function(_this) { return function(n) {
1322 if (n.type === 'text') {
1324 } else if (n.type === 'tag') {
1325 if (n.name === 'br') {
1328 disp = _this.computed_style(n)
1329 if (disp === 'inline-block') {
1334 return false // not done traversing
1338 PeachHTML5Editor.prototype.node_is_decendant = function(young, old) {
1339 while (young != null && young !== this.tree_parent) {
1340 if (young === old) {
1343 young = young.parent
1347 // helper for on_key_backspace
1348 PeachHTML5Editor.prototype._merge_left = function(state) {
1350 // the node prev to n was not prev to it a moment ago, merge with it if reasonable
1351 pi = state.n.parent.children.indexOf(state.n)
1353 prev = state.n.parent.children[pi - 1]
1354 if (prev.type === 'text') {
1355 state.i = prev.text.length
1356 prev.text = prev.el.textContent = prev.text + state.n.text
1357 this.remove_node(state.n)
1359 state.changed = true
1360 state.moved_cursor = true
1363 // else // TODO merge possible consecutive matching inline tags at @cursor
1366 // helper for on_key_backspace
1367 // remove n from the dom, also remove its inline parents that are emptied by removing n
1368 PeachHTML5Editor.prototype._backspace_node_helper = function(n, run, run_i) {
1371 run = this.get_text_run(n)
1373 if (run_i == null) {
1374 run_i = run.indexOf(n)
1376 block = this.find_block_parent(n)
1379 while (n != null && n !== block) {
1380 // bail if the previous node in this run is also inside the same parent
1382 if (this.node_is_decendant(run[run_i - 1], n)) {
1386 // bail if the next node in this run is also inside the same parent
1387 if (run_i + 1 < run.length) {
1388 if (this.node_is_decendant(run[run_i + 1], n)) {
1392 // move any sibling nodes to parent. These nodes are not in the text run
1393 while (n.children.length > 0) {
1394 this.move_node(n.children[0], n.parent, n)
1396 // remove (now completely empty) inline parent
1398 // proceed to outer parent
1402 PeachHTML5Editor.prototype.on_key_backspace = function(e) {
1403 var block, changed, merge_state, n, ncb, need_text_cleanup, new_cursor, pcb, post, pre, prev, prev_cursor, run, run_i
1404 if (this.cursor == null) {
1410 if (this.cursor.i === 0) { // cursor is at start of text node
1412 run = this.get_text_run(this.cursor.n)
1414 run_i = run.indexOf(this.cursor.n)
1415 if (run_i === 0) { // if at start of text run
1416 block = this.find_block_parent(this.cursor.n)
1417 prev_cursor = find_prev_cursor_position(this.tree, {n: this.cursor.n, i: 0})
1418 if (prev_cursor === null) { // if in first text run of document
1419 // do nothing (there's nothing text-like to the left of the cursor)
1422 // else merge with prev/outer text run
1423 pcb = this.find_block_parent(prev_cursor.n)
1424 while (block.children.length > 0) {
1425 this.move_node(block.children[0], pcb)
1427 this.remove_node(block)
1428 // merge possible consecutive text nodes at @cursor
1429 merge_state = {n: this.cursor.n}
1430 this._merge_left(merge_state)
1431 this.text_cleanup(merge_state.n)
1432 new_cursor = new_cursor_position({n: merge_state.n, i: merge_state.i})
1433 } else { // at start of text node, but not start of text run
1434 prev = run[run_i - 1]
1435 if (prev.type === 'text') { // if previous in text run is text
1436 if (prev.text.length === 1) { // if emptying prev (in text run)
1437 this._backspace_node_helper(prev, run, run_i)
1438 merge_state = {n: this.cursor.n, i: this.cursor.i}
1439 this._merge_left(merge_state)
1440 this.text_cleanup(merge_state.n)
1441 new_cursor = new_cursor_position({n: merge_state.n, i: merge_state.i})
1442 } else { // prev in run is text with muliple chars
1443 // delete last character in prev
1444 prev.text = prev.text.substr(0, prev.text.length - 1)
1445 prev.el.textContent = prev.text
1446 this.text_cleanup(this.cursor.n)
1447 new_cursor = new_cursor_position({n: this.cursor.n, i: this.cursor.i})
1449 } else if (prev.name === 'br' || prev.name === 'hr') {
1450 this._backspace_node_helper(prev, run, run_i)
1451 merge_state = {n: this.cursor.n, i: this.cursor.i}
1452 this._merge_left(merge_state)
1453 this.text_cleanup(merge_state.n)
1454 new_cursor = new_cursor_position({n: merge_state.n, i: merge_state.i})
1456 // FIXME implement this:
1457 // else // if prev (in run) is inline-block
1458 // if that inline-block has text in it
1459 // delete last char in prev inlineblock
1460 // if that empties it
1464 // move cursor inside
1466 // delete prev (inline) block
1468 // auto-delete this @cursor.parent(s) if this empties them
1470 } else { // cursor is not at start of text node
1472 run = this.get_text_run(this.cursor.n)
1474 if (this.cursor.n.text.length === 1) { // if emptying text node
1475 if (run.length === 1) { // if emptying text run (of text/br/hr/inline-block)
1476 // remove inline-parents of @cursor.n
1477 block = this.find_block_parent(this.cursor.n)
1479 n = this.cursor.n.parent
1480 // note: this doesn't use _backspace_node_helper because:
1481 // 1. we don't want to delete the target node (we're replacing it's contents)
1482 // 2. we want to track whether anything was removed
1483 // 3. we know already know there's no other text from this run anywhere
1484 while (n && n !== block) {
1486 while (n.children.length > 0) {
1487 this.move_node(n.children[0], n.parent, n)
1492 // replace @cursor.n with a single (preserved) space
1493 if (this.cursor.n.text !== ' ') {
1495 this.cursor.n.text = this.cursor.n.el.textContent = ' '
1498 this.text_cleanup(this.cursor.n)
1500 // place the cursor to the left of that space
1501 new_cursor = new_cursor_position({n: this.cursor.n, i: 0})
1502 } else { // emptying a text node (but not a whole text run)
1503 // figure out where cursor should land
1504 block = this.find_block_parent(this.cursor.n)
1505 new_cursor = find_prev_cursor_position(this.tree, {n: this.cursor.n, i: 0})
1506 ncb = this.find_block_parent(new_cursor.n)
1507 if (ncb !== block) {
1508 new_cursor = find_next_cursor_position(this.tree, {n: this.cursor.n, i: 1})
1510 // delete text node and cleanup emptied parents
1511 run_i = run.indexOf(this.cursor.n)
1512 this._backspace_node_helper(this.cursor.n, run, run_i)
1513 // see if new adjacent siblings should merge
1514 // TODO make smarter
1515 if (run_i > 0 && run_i + 1 < run.length) {
1516 if (run[run_i - 1].type === 'text' && run[run_i + 1].type === 'text') {
1517 merge_state = {n: run[run_i + 1]}
1518 this._merge_left(merge_state)
1519 if (merge_state.moved_cursor) {
1520 new_cursor = merge_state
1524 // update whitespace preservation
1525 this.text_cleanup(block)
1526 // update cursor x/y in case things moved around
1527 if (new_cursor != null) {
1528 if (new_cursor.n.el.parentNode) { // still in dom after cleanup
1529 new_cursor = new_cursor_position({n: new_cursor.n, i: new_cursor.i})
1535 } else { // there's a char left of cursor that we can delete without emptying anything
1537 need_text_cleanup = true
1538 if (this.cursor.i > 1 && this.cursor.i < this.cursor.n.text.length) {
1539 pre = this.cursor.n.text.substr(this.cursor.i - 2, 3)
1540 post = pre.charAt(0) + pre.charAt(2)
1541 if (str_has_ws_run(pre) === str_has_ws_run(post)) {
1542 need_text_cleanup = false
1545 this.remove_character(this.cursor.n, this.cursor.i - 1)
1546 // call text_cleanup if whe created/removed a whitespace run
1547 if (need_text_cleanup) {
1548 this.text_cleanup(this.cursor.n)
1550 new_cursor = new_cursor_position({n: this.cursor.n, i: this.cursor.i - 1})
1553 // mark document changed and move the cursor
1554 if (changed != null) {
1557 if (new_cursor != null) {
1558 this.move_cursor(new_cursor)
1563 PeachHTML5Editor.prototype.on_page_up_key = function(e) {
1564 var new_cursor, screen_y, scroll_amount
1565 if (this.wrap2.scrollTop === 0) {
1566 if (this.cursor == null) {
1569 new_cursor = first_cursor_position(this.tree)
1570 if (new_cursor != null) {
1571 if (new_cursor.n !== this.cursor.n || new_cursor.i !== this.cursor.i) {
1572 this.move_cursor(new_cursor)
1577 if (this.cursor != null) {
1578 screen_y = this.cursor.y - this.wrap2.scrollTop
1580 scroll_amount = this.wrap2_height - breathing_room
1581 this.wrap2.scrollTop = Math.max(0, this.wrap2.scrollTop - scroll_amount)
1582 if (this.cursor != null) {
1583 return this.move_cursor_into_view(screen_y + this.wrap2.scrollTop)
1586 PeachHTML5Editor.prototype.on_page_down_key = function(e) {
1587 var lowest_scrollpos, new_cursor, screen_y, scroll_amount
1588 lowest_scrollpos = this.wrap2.scrollHeight - this.wrap2_height
1589 if (this.wrap2.scrollTop === lowest_scrollpos) {
1590 if (this.cursor == null) {
1593 new_cursor = last_cursor_position(this.tree)
1594 if (new_cursor != null) {
1595 if (new_cursor.n !== this.cursor.n || new_cursor.i !== this.cursor.i) {
1596 this.move_cursor(new_cursor)
1601 if (this.cursor != null) {
1602 screen_y = this.cursor.y - this.wrap2.scrollTop
1604 scroll_amount = this.wrap2_height - breathing_room
1605 this.wrap2.scrollTop = Math.min(lowest_scrollpos, this.wrap2.scrollTop + scroll_amount)
1606 if (this.cursor != null) {
1607 this.move_cursor_into_view(screen_y + this.wrap2.scrollTop)
1610 PeachHTML5Editor.prototype.move_cursor_into_view = function(y_target) {
1611 var cur, far_enough, finder, new_cursor, saved_ideal_x, was, y_max, y_min
1612 if (y_target === this.cursor.y) {
1616 y_min = this.wrap2.scrollTop
1617 if (this.wrap2.scrollTop !== 0) {
1618 y_min += breathing_room
1620 y_max = this.wrap2.scrollTop + this.wrap2_height
1621 if (this.wrap2.scrollTop !== this.wrap2.scrollHeight - this.wrap2_height) { // downmost
1622 y_max -= breathing_room
1624 y_target = Math.min(y_target, y_max)
1625 y_target = Math.max(y_target, y_min)
1626 if (y_target < this.cursor.y) {
1627 finder = find_up_cursor_position
1628 far_enough = function(cur, target_y) {
1629 return cur.y + cur.h <= target_y
1632 finder = find_down_cursor_position
1633 far_enough = function(cur, y_target) {
1634 return cur.y >= y_target
1638 cur = finder(this.tree, was, this.cursor_ideal_x)
1642 if (far_enough(cur, y_target)) {
1647 if (was === this.cursor) {
1651 if (was.y + was.h > y_max) {
1653 } else if (was.y < y_min) {
1658 if (cur.y + cur.h > y_max) {
1660 } else if (cur.y < y_min) {
1664 if ((cur != null) && (was != null)) {
1665 // both valid, pick best
1666 if (cur.y < y_min) {
1668 } else if (was.y + was.h > y_max) {
1670 } else if (cur.y - y_target < y_target - was.y) {
1676 new_cursor = was != null ? was : cur
1678 if (new_cursor != null) {
1679 saved_ideal_x = this.cursor_ideal_x
1680 this.move_cursor(new_cursor)
1681 this.cursor_ideal_x = saved_ideal_x
1684 // remove all the editable content (and cursor, overlays, etc)
1685 PeachHTML5Editor.prototype.clear_dom = function() {
1686 while (this.idoc.body.childNodes.length) {
1687 this.idoc.body.removeChild(this.idoc.body.childNodes[0])
1691 PeachHTML5Editor.prototype.load_html = function(html) {
1692 this.tree = peach_parser(html, this.parser_opts)
1693 if (this.tree[0] == null ? true : this.tree[0].parent == null) {
1694 this.tree = peach_parser('<p style="white-space: pre-wrap"> </p>', this.parser_opts)
1696 this.tree_parent = this.tree[0].parent
1697 this.tree_parent.el = this.idoc.body
1699 instantiate_tree(this.tree, this.tree_parent.el)
1700 this.collapse_whitespace(this.tree)
1701 return this.changed()
1703 PeachHTML5Editor.prototype.changed = function() {
1704 this.in_el.onchange = null
1705 if (this.pretty_print) {
1706 this.in_el.value = this.pretty_html(this.tree)
1708 this.in_el.value = nodes_to_html(this.tree)
1710 this.in_el.onchange = (function(_this) { return function() {
1711 return _this.load_html(_this.in_el.value)
1713 return this.adjust_iframe_height()
1715 PeachHTML5Editor.prototype.adjust_iframe_height = function() {
1717 s = this.wrap2.scrollTop
1718 // when the content gets shorter, the idoc's body tag will continue to
1719 // report the old (too big) height in Chrome. The workaround is to
1720 // shrink the iframe before the content height:
1721 this.iframe.style.height = "10px"
1722 h = parseInt(this.idoc.body.scrollHeight, 10)
1723 this.iframe.style.height = h + "px"
1724 return this.wrap2.scrollTop = s
1726 // true if n is text node with only one caracter, and the only child of a tag
1727 PeachHTML5Editor.prototype.is_only_char_in_tag = function(n, i) {
1728 if (n.type !== 'text') {
1731 if (n.text.length !== 1) {
1734 if (n.parent === this.tree_parent) {
1737 if (n.parent.children.length !== 1) {
1742 // true if n is text node with just a space in it, and the only child of a tag
1743 PeachHTML5Editor.prototype.is_lone_space = function(n, i) {
1744 if (n.type !== 'text') {
1747 if (n.text !== ' ') {
1750 if (n.parent === this.tree_parent) {
1753 if (n.parent.children.length !== 1) {
1758 // detect special case: typing before a space that's the only thing in a block/doc
1759 // reason: enter key creates blocks with just a space in them
1760 PeachHTML5Editor.prototype.insert_should_replace = function(n, i) {
1764 if (n.text !== ' ') {
1767 if (n.parent === this.tree_parent) {
1770 if (n.parent.children.length === 1) {
1771 if (n.parent.children[0] === n) {
1778 // WARNING: after calling this, you MUST call changed() and text_cleanup()
1779 PeachHTML5Editor.prototype.insert_character = function(n, i, char) {
1780 if (n.parent === this.tree_parent) {
1781 // FIXME implement text nodes at top level
1784 // insert the character
1785 if (this.insert_should_replace(n, i)) {
1787 } else if (i === 0) {
1788 n.text = char + n.text
1789 } else if (i === n.text.length) {
1792 n.text = n.text.substr(0, i) + char + n.text.substr(i)
1794 return n.el.nodeValue = n.text
1796 // WARNING: after calling this, you MUST call changed() and text_cleanup()
1797 PeachHTML5Editor.prototype.remove_character = function(n, i) {
1798 n.text = n.text.substr(0, i) + n.text.substr(i + 1)
1799 return n.el.nodeValue = n.text
1801 PeachHTML5Editor.prototype.computed_style = function(n, prop) {
1803 if (n.type === 'text') {
1806 style = this.iframe.contentWindow.getComputedStyle(n.el, null)
1807 return style.getPropertyValue(prop)
1809 // returns the new white-space value that will preserve spaces for node n
1810 PeachHTML5Editor.prototype.preserve_space = function(n, ideal_target) {
1812 if (n.type === 'text') {
1817 while (target !== ideal_target && !target.el.style.whiteSpace) {
1818 if (target == null) {
1819 console.log("bug #967123")
1822 target = target.parent
1824 ws = (ref = ws_props[target.el.style.whiteSpace]) != null ? ref.to_preserve : null
1828 target.el.style.whiteSpace = ws
1829 this.update_style_from_el(target)
1832 PeachHTML5Editor.prototype.update_style_from_el = function(n) {
1834 style = n.el.getAttribute('style')
1835 if (style != null && style != '') {
1836 return n.attrs.style = style
1838 if (n.attrs.style != null) {
1839 return delete n.attrs.style
1843 // remove whitespace that would be trimmed
1844 // replace whitespace that would collapse with a single space
1845 // FIXME remove whitespace from after <br> (but not before)
1847 // check computed white-space prop on txt parents
1848 // batch replace txt node contents (ie don't loop for each char)
1849 PeachHTML5Editor.prototype.collapse_whitespace = function(tree) {
1850 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
1854 prev = cur = next = null
1855 prev_i = cur_i = next_i = 0
1856 prev_pos = pos = next_pos = null
1857 prev_px = cur_px = next_px = null
1861 tree_remove_empty_text_nodes(tree)
1863 iterate = function(tree, cb) {
1864 var advance, block, i, j, n
1865 for (j = 0; j < tree.length; j++) {
1867 if (n.type === 'text') {
1869 while (i < n.text.length) { // don't foreach, cb might remove chars
1876 if (n.type === 'tag') {
1877 block = is_display_block(n.el)
1881 if (n.children.length > 0) {
1882 iterate(n.children, cb)
1891 remove = function(undo) {
1893 cur.el.textContent = cur.text = (cur.text.substr(0, cur_i)) + removed_char + (cur.text.substr(cur_i))
1894 if (next === cur) { // in same text node
1899 removed_char = cur.text.charAt(cur_i)
1900 cur.el.textContent = cur.text = (cur.text.substr(0, cur_i)) + (cur.text.substr(cur_i + 1))
1901 if (next === cur) { // in same text node
1903 throw "how is this possible?"
1910 replace_with_space = function(undo) {
1912 cur.text = (cur.text.substr(0, cur_i)) + removed_char + (cur.text.substr(cur_i + 1))
1913 cur.el.textContent = cur.text
1915 removed_char = cur.text.charAt(cur_i)
1916 if (removed_char !== ' ') {
1917 cur.text = (cur.text.substr(0, cur_i)) + ' ' + (cur.text.substr(cur_i + 1))
1918 cur.el.textContent = cur.text
1923 // return true if cur was removed from the dom (ie re-use same prev)
1924 operate = function() {
1925 // cur definitately set
1926 // prev and/or next might be null, indicating the start/end of a display:block
1927 var bounds, dbg, fixer, fixers, i, need_undo, new_next_px, new_prev_px, removed, undo_arg
1928 if (!is_space_code(cur.text.charCodeAt(cur_i))) {
1931 fixers = [remove, replace_with_space]
1932 // check for common case: single whitespace surrounded by non-whitespace chars
1933 if ((prev != null) && (next != null)) {
1934 if (!((is_space_code(prev.text.charCodeAt(prev_i))) || (is_space_code(next.text.charCodeAt(next_i))))) {
1935 dbg = cur.text.charCodeAt(cur_i)
1936 if (cur.text.charAt(cur_i) === ' ') {
1939 fixers = [replace_with_space]
1943 bounds = text_range_bounds(cur.el, cur_i, cur_i + 1)
1944 // consistent cases:
1945 // 1. zero rects returned by getClientRects() means collapsed space
1946 if (bounds === null) {
1949 // 2. width greater than zero means visible space
1951 // has bounds, don't try removing
1952 fixers = [replace_with_space]
1954 // now the weird edge cases...
1956 // firefox and chromium both report zero width for characters at the end
1957 // of a line where the text wraps (automatically, due to word-wrap) to
1958 // the next line. These do not appear to be distinguishable from
1959 // collapsed spaces via the range/bounds api, so...
1961 // remove it from the dom, and if prev or next moves, put it back.
1963 // this block (try changing it, put it back if something moves) is also
1964 // used on collapsable whitespace characters besides space. In this case
1965 // the character is replaced with a normal space character instead of
1967 if ((prev != null) && (prev_px == null)) {
1968 prev_px = new_cursor_position({n: prev, i: prev_i})
1970 if ((next != null) && (next_px == null)) {
1971 next_px = new_cursor_position({n: next, i: next_i})
1973 //if prev is null and next is null
1974 // parent_px = cur.parent.el.getBoundingClientRect()
1975 undo_arg = true // just for readabality
1977 for (i = 0; i < fixers.length; i++) {
1985 if (prev_px != null) {
1986 new_prev_px = new_cursor_position({n: prev, i: prev_i})
1987 if (new_prev_px != null) {
1988 if (new_prev_px.x !== prev_px.x || new_prev_px.y !== prev_px.y) {
1995 console.log("this shouldn't happen, we remove spaces that don't locate")
1998 if ((next != null) && !need_undo) {
1999 if (next_px != null) {
2000 new_next_px = new_cursor_position({n: next, i: next_i})
2001 if (new_next_px != null) {
2002 if (new_next_px.x !== next_px.x || new_next_px.y !== next_px.y) {
2010 // console.log "removing space becase space after it is collapsed"
2013 removed += fixer(undo_arg)
2022 // pass null at start/end of display:block
2023 queue = function(n, i) {
2024 var advance, removed
2031 // don't advance (to the next character next time) if we removed a
2032 // character from the same text node as ``next``, because doing so
2033 // renumbers the indexes in that string
2034 if (removed && cur === next) {
2051 iterate(tree, queue)
2054 tree_remove_empty_text_nodes(tree)
2056 // call this after you insert or remove inline nodes. It will:
2057 // merge consecutive text nodes
2058 // remove empty text nodes
2059 // adjust white-space property
2060 // note: this assumes that all whitespace in text nodes should be displayed
2061 // (ie not collapse or be trimmed) and will change the white-space property
2062 // as needed to achieve this.
2063 PeachHTML5Editor.prototype.text_cleanup = function(n) {
2064 var block, eats_start_sp, i, last, n_i, need_preserve, prev, prev_i, run, ws
2065 if (this.is_display_block(n)) {
2068 block = this.find_block_parent(n)
2069 if (block == null) {
2073 run = this.get_text_run(block)
2077 // merge consecutive text elements
2078 if (run.length > 1) {
2081 while (i < run.length) {
2083 if (prev.type === 'text' && n.type === 'text') {
2084 if (prev.parent === n.parent) {
2085 prev_i = n.parent.children.indexOf(prev)
2086 n_i = n.parent.children.indexOf(n)
2087 if (n_i === prev_i + 1) {
2088 prev.text = prev.text + n.text
2089 prev.el.textContent = prev.text
2092 continue // don't increment i or change prev
2100 // remove empty text nodes
2102 while (i < run.length) {
2104 if (n.type === 'text') {
2105 if (n.text === '') {
2107 // FIXME maybe remove parents recursively if this makes them empty
2109 continue // don't increment i
2114 // note: inline tags can have white-space:pre-line/etc
2115 // note: inline-blocks have their whitespace collapsed independantly of outer run
2116 // note: inline-blocks are treated like non-whitespace char even if empty
2117 if (block.el.style.whiteSpace != null) {
2118 ws = block.el.style.whiteSpace
2120 if (ws_props[ws].space) {
2121 if (ws_props[ws].to_collapse === 'normal') {
2122 block.el.style.whiteSpace = null
2124 block.el.style.whiteSpace = ws_props[ws].to_collapse
2126 this.update_style_from_el(block)
2130 // note: space after <br> colapses, but not space before
2131 // check for spaces that would collapse without help
2132 eats_start_sp = true // if the next node starts with space it collapses (unless pre)
2134 for (i = 0; i < run.length; ++i) {
2136 if (n.type === 'tag') {
2137 if (n.name === 'br') {
2138 eats_start_sp = true
2140 eats_start_sp = false
2143 need_preserve = false
2144 if (n.type !== 'text') {
2145 console.log("bug #232308")
2148 if (eats_start_sp) {
2149 if (is_space_code(n.text.charCodeAt(0))) {
2150 need_preserve = true
2153 if (!need_preserve) {
2154 need_preserve = multi_sp_regex.test(n.text)
2156 if (need_preserve) {
2157 // do we have it already?
2158 ws = this.computed_style(n, 'white-space')
2159 if (ws_props[ws] != null ? !ws_props[ws].space : true) {
2160 // 2nd arg is ideal target for css rule
2161 ws = this.preserve_space(n, block)
2163 eats_start_sp = false
2165 if (is_space_code(n.text.charCodeAt(n.text.length - 1))) {
2166 ws = this.computed_style(n, 'white-space')
2167 if ((ref1 = ws_props[ws]) != null ? ref1.space : void 0) {
2168 eats_start_sp = false
2170 eats_start_sp = true
2173 eats_start_sp = false
2178 // check if text ends with a collapsable space
2179 if (run.length > 0) {
2180 last = run[run.length - 1]
2181 if (last.type === 'text') {
2182 if (eats_start_sp) {
2183 this.preserve_space(last, block)
2188 PeachHTML5Editor.prototype.css_clear = function(n, prop) {
2189 var css_delimiter_regex, i, styles
2190 if (n.attrs.style == null) {
2193 if (n.attrs.style === '') {
2196 css_delimiter_regex = new RegExp('\s*;\s*', 'g') // FIXME make this global
2197 styles = n.attrs.style.trim().split(css_delimiter)
2198 if (!(styles.length > 0)) {
2201 if (styles[styles.length - 1] === '') {
2203 if (!(styles.length > 0)) {
2208 while (i < styles.length) {
2209 if (styles[i].substr(0, 12) === 'white-space:') {
2216 // WARNING: after calling this one or more times, you MUST:
2217 // if it's inline: call @text_cleanup
2219 PeachHTML5Editor.prototype.remove_node = function(n) {
2221 i = n.parent.children.indexOf(n)
2223 throw "BUG #9187112313"
2225 n.el.parentNode.removeChild(n.el)
2226 n.parent.children.splice(i, 1)
2228 // remove a node from the tree/dom, insert into new_parent before insert_before?end
2229 // WARNING: after calling this one or more times, you MUST:
2230 // if it's inline: call @text_cleanup
2232 PeachHTML5Editor.prototype.move_node = function(n, new_parent, insert_before) {
2234 if (insert_before == null) {
2235 insert_before = null
2237 i = n.parent.children.indexOf(n)
2239 throw "Error: tried to remove node, but it's not in it's parents list of children"
2242 if (insert_before != null) {
2243 before_i = new_parent.children.indexOf(insert_before)
2245 throw "Error: tried to move a node to be before a non-existent node"
2247 insert_before = insert_before.el
2250 if (insert_before != null) {
2251 new_parent.el.insertBefore(n.el, insert_before)
2252 new_parent.children.splice(before_i, 0, n)
2254 new_parent.el.appendChild(n.el, insert_before)
2255 new_parent.children.push(n)
2257 n.parent = new_parent
2259 // remove it, forget where it was
2260 PeachHTML5Editor.prototype.kill_cursor = function() {
2261 if (this.cursor_visible) {
2262 this.cursor_el.parentNode.removeChild(this.cursor_el)
2263 this.cursor_visible = false
2268 PeachHTML5Editor.prototype.move_cursor = function(cursor) {
2270 this.cursor_ideal_x = cursor.x
2271 this.cursor = cursor
2272 if (!this.cursor_visible) {
2273 this.cursor_el = domify(this.outer_idoc, {div: { id: 'cursor'}})
2274 this.overlay.appendChild(this.cursor_el)
2275 this.cursor_visible = true
2277 this.cursor_el.style.left = (cursor.x + overlay_padding - 1) + "px"
2283 this.cursor_el.style.top = (cursor.y + overlay_padding + Math.round(height * .07)) + "px"
2284 this.cursor_el.style.height = (Math.round(height * 0.82)) + "px"
2285 this.annotate(cursor.n)
2286 this.scroll_into_view(cursor.y, height)
2288 PeachHTML5Editor.prototype.scroll_into_view = function(y, h) {
2289 var downmost, upmost
2293 y += overlay_padding // convert units from @idoc to @wrap2
2294 // very top of document
2295 if (y <= breathing_room) {
2296 this.wrap2.scrollTop = 0
2299 // very bottom of document
2300 if (y + h >= this.wrap2.scrollHeight - breathing_room) {
2301 this.wrap2.scrollTop = this.wrap2.scrollHeight - this.wrap2_height
2304 // The most scrolled up (lowest value for scrollTop) that would be OK
2305 upmost = y + h + breathing_room - this.wrap2_height
2306 upmost = Math.max(upmost, 0)
2307 // the most scrolled down (highest value for scrollTop) that would be OK
2308 downmost = y - breathing_room
2309 downmost = Math.min(downmost, this.wrap2.scrollHeight - this.wrap2_height)
2310 if (upmost > downmost) { // means h is too big to fit
2311 // scroll so top is visible
2312 this.wrap2.scrollTop = downmost
2315 if (this.wrap2.scrollTop < upmost) {
2316 this.wrap2.scrollTop = upmost
2319 if (this.wrap2.scrollTop > downmost) {
2320 this.wrap2.scrollTop = downmost
2324 PeachHTML5Editor.prototype.annotate = function(n) {
2325 var alpha, ann_box, ann_tag, bounds, prev_bounds
2326 while (this.matting.length > 0) {
2327 this.overlay.removeChild(this.matting[0])
2328 this.matting.shift()
2333 prev_bounds = {x: 0, y: 0, w: 0, h: 0}
2335 while (((n != null ? n.el : void 0) != null) && n !== this.tree_parent) {
2336 if (n.type === 'text') {
2340 bounds = get_el_bounds(n.el)
2341 if (bounds == null) {
2344 if (bounds.x === prev_bounds.x && bounds.y === prev_bounds.y && bounds.w === prev_bounds.w && bounds.h === prev_bounds.h) {
2348 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});
2349 this.overlay.appendChild(ann_box)
2350 this.matting.push(ann_box)
2351 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 + " "})]}})
2352 this.overlay.appendChild(ann_tag)
2353 this.matting.push(ann_tag)
2358 PeachHTML5Editor.prototype.pretty_html = function(tree, indent, parent_flags) {
2359 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
2360 if (indent == null) {
2363 if (parent_flags == null) {
2371 want_nl = parent_flags.want_nl
2372 prev_in_flow_is_text = false
2373 prev_in_flow_is_block = false
2374 for (i = 0; i < tree.length; ++i) {
2382 if (n.name === 'br') {
2386 if (n.el.currentStyle != null) {
2387 cs = n.el.currentStyle
2388 whitespace = cs['white-space']
2389 display = cs['display']
2390 position = cs['position']
2392 visibility = cs['visibility']
2394 cs = this.iframe.contentWindow.getComputedStyle(n.el, null)
2395 whitespace = cs.getPropertyValue('white-space')
2396 display = cs.getPropertyValue('display')
2397 position = cs.getPropertyValue('position')
2398 float = cs.getPropertyValue('float')
2399 visibility = cs.getPropertyValue('visibility')
2401 if (n.name === 'textarea') {
2402 inner_flags.pre_ish = true
2404 inner_flags.pre_ish = whitespace.substr(0, 3) === 'pre'
2418 if ('display' === 'none') {
2421 switch (visibility) {
2435 inner_flags.block = false
2436 is_block = in_flow_block = false
2438 case 'inline-black':
2439 inner_flags.block = true
2440 is_block = in_flow_block = false
2443 inner_flags.block = true
2445 in_flow_block = in_flow
2452 in_flow_block = false
2454 default: // 'comment', 'doctype'
2458 in_flow_block = false
2460 // print whitespace if we can
2461 if (!parent_flags.pre_ish) {
2462 if (!(prev_in_flow_is_text && is_br)) {
2463 if ((i === 0 && parent_flags.block) || in_flow_block || prev_in_flow_is_block) {
2475 for (k in n.attrs) {
2476 attr_keys.unshift(k)
2479 for (j = 0; j < attr_keys.length; ++j) {
2482 if (n.attrs[k].length > 0) {
2483 ret += "=\"" + (enc_attr(n.attrs[k])) + "\""
2487 if (void_elements[n.name] == null) {
2488 if (inner_flags.block) {
2489 next_indent = indent + ' '
2491 next_indent = indent
2493 if (n.children.length) {
2494 ret += this.pretty_html(n.children, next_indent, inner_flags)
2496 ret += "</" + n.name + ">"
2500 if (n.parent != null ? plaintext_elements[n.parent.name] : false) {
2502 } else if (n.parent != null ? newline_eating_elements[n.parent.name] && n.text.charAt(0) === "\n" : false) {
2503 ret += enc_text("\n" + n.text)
2505 ret += enc_text(n.text)
2509 ret += "<!--" + n.text + "-->" // TODO encode?
2512 ret += "<!DOCTYPE " + n.name
2513 if ((n.public_identifier != null) && n.public_identifier.length > 0) {
2514 ret += " \"" + n.public_identifier + "\""
2516 if ((n.system_identifier != null) && n.system_identifier.length > 0) {
2517 ret += " \"" + n.system_identifier + "\""
2523 prev_in_flow_is_text = is_text
2524 prev_in_flow_is_block = is_block || (in_flow && is_br)
2528 // output final newline if allowed
2529 if (!parent_flags.pre_ish) {
2530 if (prev_in_flow_is_block || parent_flags.block) {
2531 ret += "\n" + (indent.substr(4))
2537 PeachHTML5Editor.prototype.onblur = function() {
2540 PeachHTML5Editor.prototype.have_focus = function() {
2541 this.editor_is_focused = true
2542 this.poll_for_blur()
2544 PeachHTML5Editor.prototype.poll_for_blur = function() {
2545 if (this.poll_for_blur_timeout != null) {
2548 this.poll_for_blur_timeout = timeout(150, (function(_this) { return function() {
2549 next_frame(function() { // pause polling when browser knows we're not active/visible/etc.
2550 _this.poll_for_blur_timeout = null
2551 if (document.activeElement === _this.outer_iframe) {
2552 _this.poll_for_blur()
2554 _this.editor_is_focused = false
2561 window.peach_html5_editor = function() {
2562 // coffeescript: return new PeachHTML5Editor args...
2563 // compiles to below... there must be a better way
2565 args = 1 <= arguments.length ? slice.call(arguments, 0) : []
2566 return (function(func, args, ctor) {
2567 ctor.prototype = func.prototype
2568 var child = new ctor, result = func.apply(child, args)
2569 return Object(result) === result ? result : child
2570 })(PeachHTML5Editor, args, function(){})
2575 // test in browser: peach_html5_editor(document.getElementsByTagName('textarea')[0])