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.nodeType === 1) {
125 return window.getComputedStyle(el, null).getPropertyValue('display') === 'block'
130 // Pass return value from dom event handlers to this.
131 // If they return false, this will addinionally stop propagation and default.
132 function event_return (e, bool) {
133 if (bool === false) {
134 if (e.stopPropagation != null) {
137 if (e.preventDefault != null) {
144 // Warning: currently assumes you're asking about a single character
145 // Note: chromium returns multiple bounding rects for a space at a line-break
146 // Note: chromium's getBoundingClientRect() is broken (when zero-area client rects)
147 // Note: sometimes returns null (eg for whitespace that is not visible)
148 text_range_bounds = function(el, start, end) {
149 var doc, range, rect, rects, win, x_fix, y_fix
150 range = document.createRange()
151 range.setStart(el, start)
152 range.setEnd(el, end)
153 rects = range.getClientRects()
154 if (rects.length > 0) {
155 if (rects.length > 1) {
156 if (rects[1].width > rects[0].width) {
167 doc = el.ownerDocument.documentElement
168 win = el.ownerDocument.defaultView
169 y_fix = win.pageYOffset - doc.clientTop
170 x_fix = win.pageXOffset - doc.clientLeft
172 x: rect.left + x_fix,
174 w: rect.width != null ? rect.width : rect.right - rect.left,
175 h: rect.height != null ? rect.height : rect.top - rect.bottom,
177 bounding: range.getBoundingClientRect()
181 function CursorPosition(args) {
182 this.n = args.n != null ? args.n : null
183 this.i = args.i != null ? args.i : null
184 if (args.x != null) {
193 CursorPosition.prototype.set_xyh = function() {
195 range = document.createRange()
196 if (this.n.text.length === 0) {
197 ret = text_range_bounds(this.n.el, 0, 0)
198 } else if (this.i === this.n.text.length) {
199 ret = text_range_bounds(this.n.el, this.i - 1, this.i)
204 ret = text_range_bounds(this.n.el, this.i, this.i + 1)
218 function new_cursor_position (args) {
220 ret = new CursorPosition(args)
227 // html encoding for attributes
228 // encoding nbsp is not required, but hopefully it is useful
229 enc_attr_regex = new RegExp('(&)|(")|(\u00A0)', 'g')
230 function enc_attr (txt) {
231 return txt.replace(enc_attr_regex, function(match, amp, quote) {
241 // html encoding for text (does nothing to stop whitespace collapse)
242 // encoding nbsp is not required, but hopefully it is useful
243 enc_text_regex = new RegExp('(&)|(<)|(\u00A0)', 'g')
244 function enc_text (txt) {
245 return txt.replace(enc_text_regex, function(match, amp, lt) {
256 // no closing tag, cannot have children
275 // contents are not html encoded
276 var plaintext_elements = {
287 // parser deletes a starting newline inside:
288 var newline_eating_elements = {
294 // this does not pretty-print
295 function nodes_to_html (tree) {
296 var attr_keys, i, k, n, ret
298 for (i = 0; i < tree.length; ++i) {
306 if (n.attrs[k].length > 0) {
307 ret += "=\"" + (enc_attr(n.attrs[k])) + "\""
311 if (void_elements[n.name] == null) {
312 if (n.children.length) {
313 ret += nodes_to_html(n.children)
315 ret += "</" + n.name + ">"
319 if (n.parent != null ? plaintext_elements[n.parent.name] : false) {
321 } else if (n.parent != null ? newline_eating_elements[n.parent.name] && n.text.charAt(0) === "\n" : false) {
322 ret += enc_text("\n" + n.text)
324 ret += enc_text(n.text)
328 ret += "<!--" + n.text + "-->" // TODO encode?
331 ret += "<!DOCTYPE " + n.name
332 if ((n.public_identifier != null) && n.public_identifier.length > 0) {
333 ret += " \"" + n.public_identifier + "\""
335 if ((n.system_identifier != null) && n.system_identifier.length > 0) {
336 ret += " \"" + n.system_identifier + "\""
344 // TODO make these always pretty-print (on the inside) like blocks
345 // TODO careful though: whitespace might get pushed to parent, which might be rendered
346 no_text_elements = { // these elements never contain text
356 function domify (doc, hash) {
357 var attrs, el, i, k, tag, v
360 if (tag === 'text') {
361 return document.createTextNode(attrs)
363 el = document.createElement(tag)
366 if (k === 'children') {
367 for (i = 0; i < v.length; i++) {
371 el.setAttribute(k, v)
380 '20': true, // capslock
382 '144': true, // numlock
384 '91': true // windows "start" key
386 // key codes: (valid on keydown, not keypress)
391 KEY_BACKSPACE = 8 // <--
392 KEY_DELETE = 46 // -->
401 control_key_codes = { // we react to these, but they aren't typing
418 function instantiate_tree (tree, parent) {
419 var c, i, k, remove, results, v
421 for (i = 0; i < tree.length; ++i) {
425 c.el = parent.ownerDocument.createTextNode(c.text)
426 parent.appendChild(c.el)
429 if (c.name === 'script' || c.name === 'object' || c.name === 'iframe' || c.name === 'link') {
430 // TODO make some placeholders visible
431 // problematic to have different type than c: c.el = parent.ownerDocument.createComment(c.name + ' tag here')
432 c.el = parent.ownerDocument.createElement(c.name)
433 // correct type, but empty and no attributes
436 if (c.namespace === 'svg') {
437 c.el = parent.ownerDocument.createElementNS('http://www.w3.org/2000/svg', c.name)
438 } else if (c.namespace === 'mathml') {
439 c.el = parent.ownerDocument.createElementNS('http://www.w3.org/1998/Math/MathML', c.name)
441 c.el = parent.ownerDocument.createElement(c.name)
446 // FIXME if attr_whitelist[k]?
447 if (valid_attr_regex.test(k)) {
448 if (!js_attr_regex.test(k)) {
449 c.el.setAttribute(k, v)
453 parent.appendChild(c.el)
454 if (c.children.length) {
455 instantiate_tree(c.children, c.el)
461 function traverse_tree (tree, cb) {
464 for (i = 0; i < tree.length; i++) {
470 if (c.children.length) {
471 done = traverse_tree(c.children, cb)
480 function first_cursor_position (tree) {
483 traverse_tree(tree, function(node, state) {
485 if (node.type === 'text') {
486 cursor = new_cursor_position({n: node, i: 0})
487 if (cursor != null) {
489 return true // done traversing
492 return false // not done traversing
494 return found // maybe null
497 // this will fail when text has non-locatable cursor positions (eg collapsed whitespace)
498 function find_next_cursor_position (tree, cursor) {
499 var found, new_cursor, state_before
500 if (cursor.n.type === 'text' && cursor.n.text.length > cursor.i) {
501 new_cursor = new_cursor_position({n: cursor.n, i: cursor.i + 1})
502 if (new_cursor != null) {
508 traverse_tree(tree, function(node, state) {
509 if (node.type === 'text' && state_before === false) {
510 new_cursor = new_cursor_position({n: node, i: 0})
511 if (new_cursor != null) {
513 return true // done traversing
516 if (node === cursor.n) {
519 return false // not done traversing
527 function last_cursor_position (tree) {
530 traverse_tree(tree, function(node) {
532 if (node.type === 'text') {
533 cursor = new_cursor_position({n: node, i: node.text.length})
534 if (cursor != null) {
538 return false // not done traversing
540 return found // maybe null
543 // this will fail when text has non-locatable cursor positions (eg collapsed whitespace)
544 function find_prev_cursor_position (tree, cursor) {
545 var found, found_prev, new_cursor
546 if (cursor.n.type === 'text' && cursor.i > 0) {
547 new_cursor = new_cursor_position({n: cursor.n, i: cursor.i - 1})
548 if (new_cursor != null) {
554 traverse_tree(tree, function(node) {
555 if (node === cursor.n) {
556 found = found_prev // maybe null
557 return true // done traversing
559 if (node.type === 'text') {
560 new_cursor = new_cursor_position({n: node, i: node.text.length})
561 if (new_cursor != null) {
562 found_prev = new_cursor
565 return false // not done traversing
567 return found // maybe null
570 function find_up_cursor_position (tree, cursor, ideal_x) {
571 var new_cursor, prev_cursor, target_y
573 // go prev until we're higher on y axis
574 while (new_cursor.y >= cursor.y) {
575 new_cursor = find_prev_cursor_position(tree, new_cursor)
576 if (new_cursor == null) {
580 // done early if we're already left of old cursor position
581 if (new_cursor.x <= ideal_x) {
584 target_y = new_cursor.y
585 // search leftward, until we find the closest position
586 // new_cursor is the prev-most position we've checked
587 // prev_cursor is the older value, so it's not as prev as new_cursor
588 while (new_cursor.x > ideal_x && new_cursor.y === target_y) {
589 prev_cursor = new_cursor
590 new_cursor = find_prev_cursor_position(tree, new_cursor)
591 if (new_cursor == null) {
595 // move cursor to prev_cursor or new_cursor
596 if (new_cursor != null) {
597 if (new_cursor.y === target_y) {
598 // both valid, and on the same line, use closest
599 if ((ideal_x - new_cursor.x) < (prev_cursor.x - ideal_x)) {
605 // new_cursor on wrong line, use prev_cursor
609 // can't go any further prev, use prev_cursor
614 function find_down_cursor_position (tree, cursor, ideal_x) {
615 var new_cursor, prev_cursor, target_y
617 // go next until we move on the y axis
618 while (new_cursor.y <= cursor.y) {
619 new_cursor = find_next_cursor_position(tree, new_cursor)
620 if (new_cursor == null) {
624 // done early if we're already right of old cursor position
625 if (new_cursor.x >= ideal_x) {
626 // this would be strange, but could happen due to runaround
629 target_y = new_cursor.y
630 // search rightward, until we find the closest position
631 // new_cursor is the next-most position we've checked
632 // prev_cursor is the older value, so it's not as next as new_cursor
633 while (new_cursor.x < ideal_x && new_cursor.y === target_y) {
634 prev_cursor = new_cursor
635 new_cursor = find_next_cursor_position(tree, new_cursor)
636 if (new_cursor == null) {
640 if (new_cursor != null) {
641 if (new_cursor.y === target_y) {
642 // both valid, and on the same line, use closest
643 if ((new_cursor.x - ideal_x) < (ideal_x - prev_cursor.x)) {
649 // new_cursor on wrong line, use prev_cursor
653 // can't go any further prev, use prev_cursor
658 function xy_to_cursor (tree, xy) {
659 var after, before, bounds, cur, guess_i, i, n, ret
660 for (i = 0; i < tree.length; i++) {
662 if (n.type === 'tag' || n.type === 'text') {
663 bounds = get_el_bounds(n.el)
664 if (xy.x < bounds.x) {
667 if (xy.x > bounds.x + bounds.w) {
670 if (xy.y < bounds.y) {
673 if (xy.y > bounds.y + bounds.h) {
676 if (n.children.length) {
677 ret = xy_to_cursor(n.children, xy)
682 if (n.type === 'text') {
683 // click is within bounding box that contains all text.
684 if (n.text.length === 0) {
685 ret = new_cursor_position({n: n, i: 0})
691 before = new_cursor_position({n: n, i: 0})
692 if (before == null) {
695 after = new_cursor_position({n: n, i: n.text.length})
699 if (xy.y < before.y + before.h && xy.x < before.x) {
700 // console.log 'before first char on first line'
703 if (xy.y > after.y && xy.x > after.x) {
704 // console.log 'after last char on last line'
707 if (xy.y < before.y) {
708 console.log("Warning: click in text bounding box but above first line")
709 continue // above first line (runaround?)
711 if (xy.y > after.y + after.h) {
712 console.log("Warning: click in text bounding box but below last line", xy.y, after.y, after.h)
713 continue // below last line (shouldn't happen?)
715 while (after.i - before.i > 1) {
716 guess_i = Math.round((before.i + after.i) / 2)
717 cur = new_cursor_position({n: n, i: guess_i})
719 console.log("error: failed to find cursor pixel location for", n, guess_i)
723 if (xy.y < cur.y || (xy.y <= cur.y + cur.h && xy.x < cur.x)) {
729 if (before == null) { // signals failure to find a cursor position
732 // which one is closest?
733 if (Math.abs(before.x - xy.x) < Math.abs(after.x - xy.x)) {
744 // browsers collapse these (html5 spec calls these "space characters")
745 function is_space_code (char_code) {
756 function is_space (chr) {
757 return is_space_code(chr.charCodeAt(0))
760 function tree_remove_empty_text_nodes (tree) {
761 var c, empties, i, j, n
763 traverse_tree(tree, function(n) {
764 if (n.type === 'text') {
765 if (n.text.length === 0) {
769 return false // not done traversing
771 for (i = 0; i < empties.length; i++) {
773 // don't completely empty the tree
774 if (tree.length === 1) {
775 if (tree[0].type === 'text') {
776 console.log("oop, leaving a blank node because it's the only thing")
780 n.el.parentNode.removeChild(n.el)
781 ref = n.parent.children
782 for (j = 0; j < ref.length; ++j) {
785 n.parent.children.splice(j, 1)
792 function PeachHTML5Editor (in_el, options) {
793 // Options: (all optional)
794 // editor_id: "id" attribute for outer-most element created by/for editor
795 // css_file: filename of a css file to style editable content
796 // on_init: callback for when the editable content is in place
797 var css, opt_fragment, outer_bounds, outer_iframe_style, outer_wrap
798 this.options = options != null ? options : {}
799 this.pretty_print = options.pretty_print != null ? options.pretty_print : true
801 this.tree = null // array of Nodes, all editable content
802 this.tree_parent = null // this.tree is this.children. .el might === this.idoc.body
804 this.init_1_called = false // when iframes have loaded
805 this.outer_iframe // iframe to hold editor
806 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 opt_fragment = this.options.fragment != null ? this.options.fragment : true
818 this.parser_opts = {}
820 this.parser_opts.fragment = 'body'
822 this.outer_iframe = domify(document, {iframe: {}})
823 outer_iframe_style = 'border: none !important; margin: 0 !important; padding: 0 !important; height: 100% !important; width: 100% !important;'
824 if (this.options.editor_id != null) {
825 this.outer_iframe.setAttribute('id', this.options.editor_id)
827 this.outer_iframe.onload = (function(_this) { return function() {
829 _this.outer_idoc = _this.outer_iframe.contentDocument
830 icss = domify(_this.outer_idoc, { style: { children: [
831 domify(_this.outer_idoc, {text: css})
833 _this.outer_idoc.head.appendChild(icss)
834 _this.input_el = domify(_this.outer_idoc, {textarea: {style: "position: relative; left: 100px"}}) // {style: "display: block; position: absolute; top: -1000px; left: 0; height: 500px; width 50em"}})
835 _this.input_el.onblur = _this.onblur.bind(_this)
836 _this.outer_idoc.body.appendChild(_this.input_el)
837 _this.iframe = domify(_this.outer_idoc, {iframe: {sandbox: 'allow-same-origin allow-scripts'}})
838 _this.iframe.onload = function() {
839 return _this.init_1()
841 timeout(200, function() { // firefox never fires this onload
842 if (!_this.init_1_called) {
843 return _this.init_1()
846 _this.outer_idoc.body.appendChild(
847 domify(_this.outer_idoc, {div: {id: 'wrap1', children: [
848 domify(_this.outer_idoc, {div: {
849 style: "position: absolute; top: 0; left: 1px; font-size: 10px",
850 children: [domify(_this.outer_idoc, {text: "Peach HTML5 Editor"})]
852 _this.wrap2 = domify(_this.outer_idoc, {div: {id: 'wrap2', children: [
853 domify(_this.outer_idoc, {div: {id: 'wrap3', children: [
855 _this.overlay = domify(_this.outer_idoc, { div: { id: 'overlay' }})
861 outer_wrap = domify(document, {div: {"class": 'peach_html5_editor' }})
862 this.in_el.parentNode.appendChild(outer_wrap)
863 outer_bounds = get_el_bounds(outer_wrap)
864 if (outer_bounds.w < 300) {
867 if (outer_bounds.h < 300) {
870 outer_iframe_style += "width: " + outer_bounds.w + "px; height: " + outer_bounds.h + "px;"
871 this.outer_iframe.setAttribute('style', outer_iframe_style)
872 css = this.generate_outer_css({w: outer_bounds.w, h: outer_bounds.h})
873 outer_wrap.appendChild(this.outer_iframe)
875 PeachHTML5Editor.prototype.init_1 = function() { // this.iframe has loaded (but not it's css)
877 this.idoc = this.iframe.contentDocument
878 this.init_1_called = true
879 // chromium doesn't resolve relative urls as though they were at the same domain
880 // so add a <base> tag
881 this.idoc.head.appendChild(domify(this.idoc, {base: {href: this_url_sans_path()}}))
882 // don't let @iframe have scrollbars
883 this.idoc.head.appendChild(domify(this.idoc, {style: {children: [
884 domify(this.idoc, {text: "body { overflow: hidden; }"})
886 if (this.options.css_file) {
887 istyle = domify(this.idoc, {link: {rel: 'stylesheet', href: this.options.css_file}})
888 istyle.onload = (function(_this) {
890 return _this.init_2()
893 this.idoc.head.appendChild(istyle)
898 PeachHTML5Editor.prototype.init_2 = function() { // this.iframe and it's css file(s) are ready
900 var this_event_bind = function (cb) {
901 return function (e) {
903 event_return(e, _this[cb](e))
906 this.overlay.onmousedown = this_event_bind('onclick')
907 this.overlay.ondoubleclick = this_event_bind('ondoubleclick')
908 this.outer_idoc.body.onkeyup = this_event_bind('onkeyup')
909 this.outer_idoc.body.onkeydown = this_event_bind('onkeydown')
910 this.outer_idoc.body.onkeypress = this_event_bind('onkeypress')
911 this.load_html(this.in_el.value)
912 if (this.options.on_init != null) {
913 return this.options.on_init()
916 PeachHTML5Editor.prototype.generate_outer_css = function(args) {
917 var frame_width, h, inner_padding, occupy, ret, w
918 w = args.w != null ? args.w : 300
919 h = args.h != null ? args.h : 300
920 inner_padding = args.inner_padding != null ? args.inner_padding : overlay_padding
921 frame_width = args.frame_width != null ? args.frame_width : inner_padding
922 occupy = function(left, top, right, bottom) {
929 if (bottom == null) {
934 return Math.max(left, top, right, bottom)
940 ret += 'color: black;'
941 ret += 'background: white;'
942 ret += 'font-family: sans;'
945 ret += "border: " + (occupy(1)) + "px solid black;"
946 ret += "padding: " + (occupy(frame_width)) + "px;"
949 ret += "border: " + (occupy(1)) + "px solid black;"
950 this.wrap2_height = h // including padding because padding scrolls
951 ret += "padding: " + (occupy(inner_padding)) + "px;"
952 ret += "padding-right: " + (inner_padding + occupy(0, 0, 15, 0)) + "px;"
953 ret += "width: " + w + "px;"
954 ret += "height: " + h + "px;"
955 ret += 'overflow-x: hidden;'
956 ret += 'overflow-y: scroll;'
959 ret += 'position: relative;'
960 ret += "width: " + w + "px;"
961 ret += "min-height: " + h + "px;"
964 ret += 'box-sizing: border-box;'
966 ret += 'border: none;'
968 ret += "width: " + w + "px;"
969 //ret += "height: " + h + "px;" // height auto-set when content set/changed
970 ret += '-ms-user-select: none;'
971 ret += '-webkit-user-select: none;'
972 ret += '-moz-user-select: none;'
973 ret += 'user-select: none;'
976 ret += 'position: absolute;'
977 ret += "left: -" + inner_padding + "px;"
978 ret += "top: -" + inner_padding + "px;"
979 ret += "right: -" + inner_padding + "px;"
980 ret += "bottom: -" + inner_padding + "px;"
981 ret += 'overflow: hidden;'
984 ret += 'position: absolute;'
985 ret += 'background: rgba(100,100,100,0.2);'
988 ret += 'position: absolute;'
990 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));'
991 ret += 'background-size: 200% 200%;'
992 ret += '-webkit-animation: blink 1s linear normal infinite;'
993 ret += 'animation: blink 1s linear normal infinite;'
995 ret += '@-webkit-keyframes blink {'
996 ret += '0%{background-position:0% 0%}'
997 ret += '100%{background-position:0% -100%}'
999 ret += '@keyframes blink { '
1000 ret += '0%{background-position:0% 0%}'
1001 ret += '100%{background-position:0% -100%}'
1004 ret += 'z-index: 5;'
1005 ret += 'position: absolute;'
1006 ret += 'border: 1px solid rgba(0,0,0,0.1);'
1007 ret += 'outline: 1px solid rgba(255,255,255,0.1);' // in case there's a black background
1010 ret += 'z-index: 10;'
1011 ret += 'position: absolute;'
1012 ret += 'font-size: 8px;'
1013 ret += 'white-space: pre;'
1014 ret += 'background: rgba(255,255,255,0.4);'
1015 ret += '-ms-user-select: none;'
1016 ret += '-webkit-user-select: none;'
1017 ret += '-moz-user-select: none;'
1018 ret += 'user-select: none;'
1022 PeachHTML5Editor.prototype.overlay_event_to_inner_xy = function(e) {
1024 if (this.wrap2_offset == null) {
1025 this.wrap2_offset = get_el_bounds(this.wrap2)
1027 x = e.pageX - overlay_padding
1028 y = e.pageY - overlay_padding + this.wrap2.scrollTop
1030 x: x - this.wrap2_offset.x,
1031 y: y - this.wrap2_offset.y
1034 PeachHTML5Editor.prototype.onclick = function(e) {
1036 xy = this.overlay_event_to_inner_xy(e)
1037 new_cursor = xy_to_cursor(this.tree, xy)
1038 if (new_cursor != null) {
1039 this.move_cursor(new_cursor)
1045 PeachHTML5Editor.prototype.ondoubleclick = function(e) {
1048 PeachHTML5Editor.prototype.onkeyup = function(e) {
1052 if (ignore_key_codes[e.keyCode] != null) {
1055 //return false if control_key_codes[e.keyCode] != null
1057 PeachHTML5Editor.prototype.onkeydown = function(e) {
1058 var new_cursor, saved_ideal_x
1062 if (ignore_key_codes[e.keyCode] != null) {
1065 //return false if control_key_codes[e.keyCode] != null
1066 switch (e.keyCode) {
1068 if (this.cursor != null) {
1069 new_cursor = find_prev_cursor_position(this.tree, this.cursor)
1071 new_cursor = first_cursor_position(this.tree)
1073 if (new_cursor != null) {
1074 this.move_cursor(new_cursor)
1078 if (this.cursor != null) {
1079 new_cursor = find_next_cursor_position(this.tree, this.cursor)
1081 new_cursor = last_cursor_position(this.tree)
1083 if (new_cursor != null) {
1084 this.move_cursor(new_cursor)
1088 if (this.cursor != null) {
1089 new_cursor = find_up_cursor_position(this.tree, this.cursor, this.cursor_ideal_x)
1090 if (new_cursor != null) {
1091 saved_ideal_x = this.cursor_ideal_x
1092 this.move_cursor(new_cursor)
1093 this.cursor_ideal_x = saved_ideal_x
1096 // move cursor to first position in document
1097 new_cursor = first_cursor_position(this.tree)
1098 if (new_cursor != null) {
1099 this.move_cursor(new_cursor)
1104 if (this.cursor != null) {
1105 new_cursor = find_down_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 = last_cursor_position(this.tree)
1114 if (new_cursor != null) {
1115 this.move_cursor(new_cursor)
1120 new_cursor = last_cursor_position(this.tree)
1121 if (new_cursor != null) {
1122 this.move_cursor(new_cursor)
1126 this.on_key_backspace(e)
1129 if (this.cursor == null) {
1132 new_cursor = find_next_cursor_position(this.tree, {n: this.cursor.n, i: this.cursor.i})
1133 // try moving cursor right and then running backspace code
1134 // TODO replace this hack with a real implementation
1135 if (new_cursor != null) {
1136 // try to detect common case where cursor goes inside an block,
1137 // but doesn't pass a character (and advance one more in that case)
1138 if (new_cursor.n !== this.cursor.n && new_cursor.i === 0) {
1139 if (new_cursor.n.type === 'text' && new_cursor.n.text.length > 0) {
1140 if (new_cursor.n.parent != null) {
1141 if (!this.is_display_block(new_cursor.n.parent)) {
1142 // FIXME should test run sibling
1143 new_cursor = new_cursor_position({n: new_cursor.n, i: new_cursor.i + 1})
1149 if (new_cursor != null) {
1150 if (new_cursor.n !== this.cursor.n || new_cursor.i !== this.cursor.i) {
1151 this.move_cursor(new_cursor)
1152 this.on_key_backspace(e)
1157 this.on_key_enter(e)
1163 new_cursor = first_cursor_position(this.tree)
1164 if (new_cursor != null) {
1165 this.move_cursor(new_cursor)
1171 this.on_page_up_key(e)
1174 this.on_page_down_key(e)
1180 PeachHTML5Editor.prototype.onkeypress = function(e) {
1181 var char, new_cursor
1185 if (ignore_key_codes[e.keyCode] != null) {
1188 char = e.charCode != null ? e.charCode : e.keyCode
1189 if (char && (this.cursor != null)) {
1190 char = String.fromCharCode(char)
1191 this.insert_character(this.cursor.n, this.cursor.i, char)
1192 this.text_cleanup(this.cursor.n)
1194 new_cursor = new_cursor_position({n: this.cursor.n, i: this.cursor.i + 1})
1196 this.move_cursor(new_cursor)
1198 console.log("ERROR: couldn't find cursor position after insert")
1204 PeachHTML5Editor.prototype.on_key_enter = function(e) { // enter key pressed
1205 var before, cur_block, i, n, new_cursor, new_node, new_text, parent_el, pc
1206 if (!this.cursor_visible) {
1209 cur_block = this.cursor.n
1211 if (cur_block.type === 'tag') {
1212 if (is_display_block(cur_block.el)) {
1216 if (cur_block.parent == null) {
1219 cur_block = cur_block.parent
1221 // find array to insert new element into
1222 if (cur_block.parent === this.tree_parent) {
1223 parent_el = this.idoc.body
1226 parent_el = cur_block.parent.el
1227 pc = cur_block.parent.children
1229 for (i = 0; i < pc.length; ++i) {
1231 if (n === cur_block) {
1235 i += 1 // we want to be after it
1236 if (i < pc.length) {
1241 // TODO if content after cursor
1242 // TODO new block is empty
1243 new_text = new peach_parser.Node('text', {text: ' '})
1244 new_node = new peach_parser.Node('tag', {
1246 parent: cur_block.parent,
1247 attrs: {style: 'white-space: pre-wrap'},
1248 children: [new_text]
1250 new_text.parent = new_node
1251 new_text.el = domify(this.idoc, {text: ' '})
1252 new_node.el = domify(this.idoc, {p: {style: 'white-space: pre-wrap', children: [new_text.el]}})
1253 pc.splice(i, 0, new_node)
1254 parent_el.insertBefore(new_node.el, before)
1256 new_cursor = new_cursor_position({
1260 if (new_cursor == null) {
1263 this.move_cursor(new_cursor)
1264 // TODO move content past cursor into this new block
1267 // unlike the global function, this takes a Node, not an element
1268 PeachHTML5Editor.prototype.is_display_block = function(n) {
1269 // TODO stop calling global function, merge it into here, use iframe's window object
1270 if (n.type !== 'tag') {
1273 return is_display_block(n.el)
1275 PeachHTML5Editor.prototype.find_block_parent = function(n) {
1281 if (this.is_display_block(n)) {
1284 if (n === this.tree_parent) {
1290 // return a flat array of nodes (text, <br>, and later also inline-block)
1291 // that are flowing/wrapping together. n can be the containing block, or any
1292 // element inside it.
1293 PeachHTML5Editor.prototype.get_text_run = function(n) {
1296 if (this.is_display_block(n)) {
1299 block = this.find_block_parent(n)
1300 if (block == null) {
1304 traverse_tree(block.children, (function(_this) { return function(n) {
1306 if (n.type === 'text') {
1308 } else if (n.type === 'tag') {
1309 if (n.name === 'br') {
1312 disp = _this.computed_style(n)
1313 if (disp === 'inline-block') {
1318 return false // not done traversing
1322 PeachHTML5Editor.prototype.node_is_decendant = function(young, old) {
1323 while (young != null && young !== this.tree_parent) {
1324 if (young === old) {
1327 young = young.parent
1331 // helper for on_key_backspace
1332 PeachHTML5Editor.prototype._merge_left = function(state) {
1334 // the node prev to n was not prev to it a moment ago, merge with it if reasonable
1335 pi = state.n.parent.children.indexOf(state.n)
1337 prev = state.n.parent.children[pi - 1]
1338 if (prev.type === 'text') {
1339 state.i = prev.text.length
1340 prev.text = prev.el.textContent = prev.text + state.n.text
1341 this.remove_node(state.n)
1343 state.changed = true
1344 state.moved_cursor = true
1347 // else // TODO merge possible consecutive matching inline tags at @cursor
1350 // helper for on_key_backspace
1351 // remove n from the dom, also remove its inline parents that are emptied by removing n
1352 PeachHTML5Editor.prototype._backspace_node_helper = function(n, run, run_i) {
1355 run = this.get_text_run(n)
1357 if (run_i == null) {
1358 run_i = run.indexOf(n)
1360 block = this.find_block_parent(n)
1363 while (n != null && n !== block) {
1364 // bail if the previous node in this run is also inside the same parent
1366 if (this.node_is_decendant(run[run_i - 1], n)) {
1370 // bail if the next node in this run is also inside the same parent
1371 if (run_i + 1 < run.length) {
1372 if (this.node_is_decendant(run[run_i + 1], n)) {
1376 // move any sibling nodes to parent. These nodes are not in the text run
1377 while (n.children.length > 0) {
1378 this.move_node(n.children[0], n.parent, n)
1380 // remove (now completely empty) inline parent
1382 // proceed to outer parent
1386 PeachHTML5Editor.prototype.on_key_backspace = function(e) {
1387 var block, changed, merge_state, n, ncb, need_text_cleanup, new_cursor, pcb, post, pre, prev, prev_cursor, run, run_i
1388 if (this.cursor == null) {
1394 if (this.cursor.i === 0) { // cursor is at start of text node
1396 run = this.get_text_run(this.cursor.n)
1398 run_i = run.indexOf(this.cursor.n)
1399 if (run_i === 0) { // if at start of text run
1400 block = this.find_block_parent(this.cursor.n)
1401 prev_cursor = find_prev_cursor_position(this.tree, {n: this.cursor.n, i: 0})
1402 if (prev_cursor === null) { // if in first text run of document
1403 // do nothing (there's nothing text-like to the left of the cursor)
1406 // else merge with prev/outer text run
1407 pcb = this.find_block_parent(prev_cursor.n)
1408 while (block.children.length > 0) {
1409 this.move_node(block.children[0], pcb)
1411 this.remove_node(block)
1412 // merge possible consecutive text nodes at @cursor
1413 merge_state = {n: this.cursor.n}
1414 this._merge_left(merge_state)
1415 this.text_cleanup(merge_state.n)
1416 new_cursor = new_cursor_position({n: merge_state.n, i: merge_state.i})
1417 } else { // at start of text node, but not start of text run
1418 prev = run[run_i - 1]
1419 if (prev.type === 'text') { // if previous in text run is text
1420 if (prev.text.length === 1) { // if emptying prev (in text run)
1421 this._backspace_node_helper(prev, run, run_i)
1422 merge_state = {n: this.cursor.n, i: this.cursor.i}
1423 this._merge_left(merge_state)
1424 this.text_cleanup(merge_state.n)
1425 new_cursor = new_cursor_position({n: merge_state.n, i: merge_state.i})
1426 } else { // prev in run is text with muliple chars
1427 // delete last character in prev
1428 prev.text = prev.text.substr(0, prev.text.length - 1)
1429 prev.el.textContent = prev.text
1430 this.text_cleanup(this.cursor.n)
1431 new_cursor = new_cursor_position({n: this.cursor.n, i: this.cursor.i})
1433 } else if (prev.name === 'br' || prev.name === 'hr') {
1434 this._backspace_node_helper(prev, run, run_i)
1435 merge_state = {n: this.cursor.n, i: this.cursor.i}
1436 this._merge_left(merge_state)
1437 this.text_cleanup(merge_state.n)
1438 new_cursor = new_cursor_position({n: merge_state.n, i: merge_state.i})
1440 // FIXME implement this:
1441 // else // if prev (in run) is inline-block
1442 // if that inline-block has text in it
1443 // delete last char in prev inlineblock
1444 // if that empties it
1448 // move cursor inside
1450 // delete prev (inline) block
1452 // auto-delete this @cursor.parent(s) if this empties them
1454 } else { // cursor is not at start of text node
1456 run = this.get_text_run(this.cursor.n)
1458 if (this.cursor.n.text.length === 1) { // if emptying text node
1459 if (run.length === 1) { // if emptying text run (of text/br/hr/inline-block)
1460 // remove inline-parents of @cursor.n
1461 block = this.find_block_parent(this.cursor.n)
1463 n = this.cursor.n.parent
1464 // note: this doesn't use _backspace_node_helper because:
1465 // 1. we don't want to delete the target node (we're replacing it's contents)
1466 // 2. we want to track whether anything was removed
1467 // 3. we know already know there's no other text from this run anywhere
1468 while (n && n !== block) {
1470 while (n.children.length > 0) {
1471 this.move_node(n.children[0], n.parent, n)
1476 // replace @cursor.n with a single (preserved) space
1477 if (this.cursor.n.text !== ' ') {
1479 this.cursor.n.text = this.cursor.n.el.textContent = ' '
1482 this.text_cleanup(this.cursor.n)
1484 // place the cursor to the left of that space
1485 new_cursor = new_cursor_position({n: this.cursor.n, i: 0})
1486 } else { // emptying a text node (but not a whole text run)
1487 // figure out where cursor should land
1488 block = this.find_block_parent(this.cursor.n)
1489 new_cursor = find_prev_cursor_position(this.tree, {n: this.cursor.n, i: 0})
1490 ncb = this.find_block_parent(new_cursor.n)
1491 if (ncb !== block) {
1492 new_cursor = find_next_cursor_position(this.tree, {n: this.cursor.n, i: 1})
1494 // delete text node and cleanup emptied parents
1495 run_i = run.indexOf(this.cursor.n)
1496 this._backspace_node_helper(this.cursor.n, run, run_i)
1497 // see if new adjacent siblings should merge
1498 // TODO make smarter
1499 if (run_i > 0 && run_i + 1 < run.length) {
1500 if (run[run_i - 1].type === 'text' && run[run_i + 1].type === 'text') {
1501 merge_state = {n: run[run_i + 1]}
1502 this._merge_left(merge_state)
1503 if (merge_state.moved_cursor) {
1504 new_cursor = merge_state
1508 // update whitespace preservation
1509 this.text_cleanup(block)
1510 // update cursor x/y in case things moved around
1511 if (new_cursor != null) {
1512 if (new_cursor.n.el.parentNode) { // still in dom after cleanup
1513 new_cursor = new_cursor_position({n: new_cursor.n, i: new_cursor.i})
1519 } else { // there's a char left of cursor that we can delete without emptying anything
1521 need_text_cleanup = true
1522 if (this.cursor.i > 1 && this.cursor.i < this.cursor.n.text.length) {
1523 pre = this.cursor.n.text.substr(this.cursor.i - 2, 3)
1524 post = pre.charAt(0) + pre.charAt(2)
1525 if (str_has_ws_run(pre) === str_has_ws_run(post)) {
1526 need_text_cleanup = false
1529 this.remove_character(this.cursor.n, this.cursor.i - 1)
1530 // call text_cleanup if whe created/removed a whitespace run
1531 if (need_text_cleanup) {
1532 this.text_cleanup(this.cursor.n)
1534 new_cursor = new_cursor_position({n: this.cursor.n, i: this.cursor.i - 1})
1537 // mark document changed and move the cursor
1538 if (changed != null) {
1541 if (new_cursor != null) {
1542 this.move_cursor(new_cursor)
1547 PeachHTML5Editor.prototype.on_page_up_key = function(e) {
1548 var new_cursor, screen_y, scroll_amount
1549 if (this.wrap2.scrollTop === 0) {
1550 if (this.cursor == null) {
1553 new_cursor = first_cursor_position(this.tree)
1554 if (new_cursor != null) {
1555 if (new_cursor.n !== this.cursor.n || new_cursor.i !== this.cursor.i) {
1556 this.move_cursor(new_cursor)
1561 if (this.cursor != null) {
1562 screen_y = this.cursor.y - this.wrap2.scrollTop
1564 scroll_amount = this.wrap2_height - breathing_room
1565 this.wrap2.scrollTop = Math.max(0, this.wrap2.scrollTop - scroll_amount)
1566 if (this.cursor != null) {
1567 return this.move_cursor_into_view(screen_y + this.wrap2.scrollTop)
1570 PeachHTML5Editor.prototype.on_page_down_key = function(e) {
1571 var lowest_scrollpos, new_cursor, screen_y, scroll_amount
1572 lowest_scrollpos = this.wrap2.scrollHeight - this.wrap2_height
1573 if (this.wrap2.scrollTop === lowest_scrollpos) {
1574 if (this.cursor == null) {
1577 new_cursor = last_cursor_position(this.tree)
1578 if (new_cursor != null) {
1579 if (new_cursor.n !== this.cursor.n || new_cursor.i !== this.cursor.i) {
1580 this.move_cursor(new_cursor)
1585 if (this.cursor != null) {
1586 screen_y = this.cursor.y - this.wrap2.scrollTop
1588 scroll_amount = this.wrap2_height - breathing_room
1589 this.wrap2.scrollTop = Math.min(lowest_scrollpos, this.wrap2.scrollTop + scroll_amount)
1590 if (this.cursor != null) {
1591 this.move_cursor_into_view(screen_y + this.wrap2.scrollTop)
1594 PeachHTML5Editor.prototype.move_cursor_into_view = function(y_target) {
1595 var cur, far_enough, finder, new_cursor, saved_ideal_x, was, y_max, y_min
1596 if (y_target === this.cursor.y) {
1600 y_min = this.wrap2.scrollTop
1601 if (this.wrap2.scrollTop !== 0) {
1602 y_min += breathing_room
1604 y_max = this.wrap2.scrollTop + this.wrap2_height
1605 if (this.wrap2.scrollTop !== this.wrap2.scrollHeight - this.wrap2_height) { // downmost
1606 y_max -= breathing_room
1608 y_target = Math.min(y_target, y_max)
1609 y_target = Math.max(y_target, y_min)
1610 if (y_target < this.cursor.y) {
1611 finder = find_up_cursor_position
1612 far_enough = function(cur, target_y) {
1613 return cur.y + cur.h <= target_y
1616 finder = find_down_cursor_position
1617 far_enough = function(cur, y_target) {
1618 return cur.y >= y_target
1622 cur = finder(this.tree, was, this.cursor_ideal_x)
1626 if (far_enough(cur, y_target)) {
1631 if (was === this.cursor) {
1635 if (was.y + was.h > y_max) {
1637 } else if (was.y < y_min) {
1642 if (cur.y + cur.h > y_max) {
1644 } else if (cur.y < y_min) {
1648 if ((cur != null) && (was != null)) {
1649 // both valid, pick best
1650 if (cur.y < y_min) {
1652 } else if (was.y + was.h > y_max) {
1654 } else if (cur.y - y_target < y_target - was.y) {
1660 new_cursor = was != null ? was : cur
1662 if (new_cursor != null) {
1663 saved_ideal_x = this.cursor_ideal_x
1664 this.move_cursor(new_cursor)
1665 this.cursor_ideal_x = saved_ideal_x
1668 // remove all the editable content (and cursor, overlays, etc)
1669 PeachHTML5Editor.prototype.clear_dom = function() {
1670 while (this.idoc.body.childNodes.length) {
1671 this.idoc.body.removeChild(this.idoc.body.childNodes[0])
1675 PeachHTML5Editor.prototype.load_html = function(html) {
1676 this.tree = peach_parser.parse(html, this.parser_opts)
1677 if (this.tree[0] == null ? true : this.tree[0].parent == null) {
1678 this.tree = peach_parser.parse('<p style="white-space: pre-wrap"> </p>', this.parser_opts)
1680 this.tree_parent = this.tree[0].parent
1681 this.tree_parent.el = this.idoc.body
1683 instantiate_tree(this.tree, this.tree_parent.el)
1684 this.collapse_whitespace(this.tree)
1685 return this.changed()
1687 PeachHTML5Editor.prototype.changed = function() {
1688 this.in_el.onchange = null
1689 if (this.pretty_print) {
1690 this.in_el.value = this.pretty_html(this.tree)
1692 this.in_el.value = nodes_to_html(this.tree)
1694 this.in_el.onchange = (function(_this) { return function() {
1695 return _this.load_html(_this.in_el.value)
1697 return this.adjust_iframe_height()
1699 PeachHTML5Editor.prototype.adjust_iframe_height = function() {
1701 s = this.wrap2.scrollTop
1702 // when the content gets shorter, the idoc's body tag will continue to
1703 // report the old (too big) height in Chrome. The workaround is to
1704 // shrink the iframe before the content height:
1705 this.iframe.style.height = "10px"
1706 h = parseInt(this.idoc.body.scrollHeight, 10)
1707 this.iframe.style.height = h + "px"
1708 return this.wrap2.scrollTop = s
1710 // true if n is text node with only one caracter, and the only child of a tag
1711 PeachHTML5Editor.prototype.is_only_char_in_tag = function(n, i) {
1712 if (n.type !== 'text') {
1715 if (n.text.length !== 1) {
1718 if (n.parent === this.tree_parent) {
1721 if (n.parent.children.length !== 1) {
1726 // true if n is text node with just a space in it, and the only child of a tag
1727 PeachHTML5Editor.prototype.is_lone_space = function(n, i) {
1728 if (n.type !== 'text') {
1731 if (n.text !== ' ') {
1734 if (n.parent === this.tree_parent) {
1737 if (n.parent.children.length !== 1) {
1742 // detect special case: typing before a space that's the only thing in a block/doc
1743 // reason: enter key creates blocks with just a space in them
1744 PeachHTML5Editor.prototype.insert_should_replace = function(n, i) {
1748 if (n.text !== ' ') {
1751 if (n.parent === this.tree_parent) {
1754 if (n.parent.children.length === 1) {
1755 if (n.parent.children[0] === n) {
1762 // WARNING: after calling this, you MUST call changed() and text_cleanup()
1763 PeachHTML5Editor.prototype.insert_character = function(n, i, char) {
1764 if (n.parent === this.tree_parent) {
1765 // FIXME implement text nodes at top level
1768 // insert the character
1769 if (this.insert_should_replace(n, i)) {
1771 } else if (i === 0) {
1772 n.text = char + n.text
1773 } else if (i === n.text.length) {
1776 n.text = n.text.substr(0, i) + char + n.text.substr(i)
1778 return n.el.nodeValue = n.text
1780 // WARNING: after calling this, you MUST call changed() and text_cleanup()
1781 PeachHTML5Editor.prototype.remove_character = function(n, i) {
1782 n.text = n.text.substr(0, i) + n.text.substr(i + 1)
1783 return n.el.nodeValue = n.text
1785 PeachHTML5Editor.prototype.computed_style = function(n, prop) {
1787 if (n.type === 'text') {
1790 style = this.iframe.contentWindow.getComputedStyle(n.el, null)
1791 return style.getPropertyValue(prop)
1793 // returns the new white-space value that will preserve spaces for node n
1794 PeachHTML5Editor.prototype.preserve_space = function(n, ideal_target) {
1796 if (n.type === 'text') {
1801 while (target !== ideal_target && !target.el.style.whiteSpace) {
1802 if (target == null) {
1803 console.log("bug #967123")
1806 target = target.parent
1808 ws = (ref = ws_props[target.el.style.whiteSpace]) != null ? ref.to_preserve : null
1812 target.el.style.whiteSpace = ws
1813 this.update_style_from_el(target)
1816 PeachHTML5Editor.prototype.update_style_from_el = function(n) {
1818 style = n.el.getAttribute('style')
1819 if (style != null && style != '') {
1820 return n.attrs.style = style
1822 if (n.attrs.style != null) {
1823 return delete n.attrs.style
1827 // remove whitespace that would be trimmed
1828 // replace whitespace that would collapse with a single space
1829 // FIXME remove whitespace from after <br> (but not before)
1831 // check computed white-space prop on txt parents
1832 // batch replace txt node contents (ie don't loop for each char)
1833 PeachHTML5Editor.prototype.collapse_whitespace = function(tree) {
1834 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
1838 prev = cur = next = null
1839 prev_i = cur_i = next_i = 0
1840 prev_pos = pos = next_pos = null
1841 prev_px = cur_px = next_px = null
1845 tree_remove_empty_text_nodes(tree)
1847 iterate = function(tree, cb) {
1848 var advance, block, i, j, n
1849 for (j = 0; j < tree.length; j++) {
1851 if (n.type === 'text') {
1853 while (i < n.text.length) { // don't foreach, cb might remove chars
1860 if (n.type === 'tag') {
1861 block = is_display_block(n.el)
1865 if (n.children.length > 0 && plaintext_elements[n.name] == null) {
1866 iterate(n.children, cb)
1875 remove = function(undo) {
1877 cur.el.textContent = cur.text = (cur.text.substr(0, cur_i)) + removed_char + (cur.text.substr(cur_i))
1878 if (next === cur) { // in same text node
1883 removed_char = cur.text.charAt(cur_i)
1884 cur.el.textContent = cur.text = (cur.text.substr(0, cur_i)) + (cur.text.substr(cur_i + 1))
1885 if (next === cur) { // in same text node
1887 throw "how is this possible?"
1894 replace_with_space = function(undo) {
1896 cur.text = (cur.text.substr(0, cur_i)) + removed_char + (cur.text.substr(cur_i + 1))
1897 cur.el.textContent = cur.text
1899 removed_char = cur.text.charAt(cur_i)
1900 if (removed_char !== ' ') {
1901 cur.text = (cur.text.substr(0, cur_i)) + ' ' + (cur.text.substr(cur_i + 1))
1902 cur.el.textContent = cur.text
1907 // return true if cur was removed from the dom (ie re-use same prev)
1908 operate = function() {
1909 // cur definitately set
1910 // prev and/or next might be null, indicating the start/end of a display:block
1911 var bounds, dbg, fixer, fixers, i, need_undo, new_next_px, new_prev_px, removed, undo_arg
1912 if (!is_space_code(cur.text.charCodeAt(cur_i))) {
1915 fixers = [remove, replace_with_space]
1916 // check for common case: single whitespace surrounded by non-whitespace chars
1917 if ((prev != null) && (next != null)) {
1918 if (!((is_space_code(prev.text.charCodeAt(prev_i))) || (is_space_code(next.text.charCodeAt(next_i))))) {
1919 dbg = cur.text.charCodeAt(cur_i)
1920 if (cur.text.charAt(cur_i) === ' ') {
1923 fixers = [replace_with_space]
1927 bounds = text_range_bounds(cur.el, cur_i, cur_i + 1)
1928 // consistent cases:
1929 // 1. zero rects returned by getClientRects() means collapsed space
1930 if (bounds === null) {
1933 // 2. width greater than zero means visible space
1935 // has bounds, don't try removing
1936 fixers = [replace_with_space]
1938 // now the weird edge cases...
1940 // firefox and chromium both report zero width for characters at the end
1941 // of a line where the text wraps (automatically, due to word-wrap) to
1942 // the next line. These do not appear to be distinguishable from
1943 // collapsed spaces via the range/bounds api, so...
1945 // remove it from the dom, and if prev or next moves, put it back.
1947 // this block (try changing it, put it back if something moves) is also
1948 // used on collapsable whitespace characters besides space. In this case
1949 // the character is replaced with a normal space character instead of
1951 if ((prev != null) && (prev_px == null)) {
1952 prev_px = new_cursor_position({n: prev, i: prev_i})
1954 if ((next != null) && (next_px == null)) {
1955 next_px = new_cursor_position({n: next, i: next_i})
1957 //if prev is null and next is null
1958 // parent_px = cur.parent.el.getBoundingClientRect()
1959 undo_arg = true // just for readabality
1961 for (i = 0; i < fixers.length; i++) {
1969 if (prev_px != null) {
1970 new_prev_px = new_cursor_position({n: prev, i: prev_i})
1971 if (new_prev_px != null) {
1972 if (new_prev_px.x !== prev_px.x || new_prev_px.y !== prev_px.y) {
1979 console.log("this shouldn't happen, we remove spaces that don't locate")
1982 if ((next != null) && !need_undo) {
1983 if (next_px != null) {
1984 new_next_px = new_cursor_position({n: next, i: next_i})
1985 if (new_next_px != null) {
1986 if (new_next_px.x !== next_px.x || new_next_px.y !== next_px.y) {
1994 // console.log "removing space becase space after it is collapsed"
1997 removed += fixer(undo_arg)
2006 // pass null at start/end of display:block
2007 queue = function(n, i) {
2008 var advance, removed
2015 // don't advance (to the next character next time) if we removed a
2016 // character from the same text node as ``next``, because doing so
2017 // renumbers the indexes in that string
2018 if (removed && cur === next) {
2035 iterate(tree, queue)
2038 tree_remove_empty_text_nodes(tree)
2040 // call this after you insert or remove inline nodes. It will:
2041 // merge consecutive text nodes
2042 // remove empty text nodes
2043 // adjust white-space property
2044 // note: this assumes that all whitespace in text nodes should be displayed
2045 // (ie not collapse or be trimmed) and will change the white-space property
2046 // as needed to achieve this.
2047 PeachHTML5Editor.prototype.text_cleanup = function(n) {
2048 var block, eats_start_sp, i, last, n_i, need_preserve, prev, prev_i, run, ws
2049 if (this.is_display_block(n)) {
2052 block = this.find_block_parent(n)
2053 if (block == null) {
2057 run = this.get_text_run(block)
2061 // merge consecutive text elements
2062 if (run.length > 1) {
2065 while (i < run.length) {
2067 if (prev.type === 'text' && n.type === 'text') {
2068 if (prev.parent === n.parent) {
2069 prev_i = n.parent.children.indexOf(prev)
2070 n_i = n.parent.children.indexOf(n)
2071 if (n_i === prev_i + 1) {
2072 prev.text = prev.text + n.text
2073 prev.el.textContent = prev.text
2076 continue // don't increment i or change prev
2084 // remove empty text nodes
2086 while (i < run.length) {
2088 if (n.type === 'text') {
2089 if (n.text === '') {
2091 // FIXME maybe remove parents recursively if this makes them empty
2093 continue // don't increment i
2098 // note: inline tags can have white-space:pre-line/etc
2099 // note: inline-blocks have their whitespace collapsed independantly of outer run
2100 // note: inline-blocks are treated like non-whitespace char even if empty
2101 if (block.el.style.whiteSpace != null) {
2102 ws = block.el.style.whiteSpace
2104 if (ws_props[ws].space) {
2105 if (ws_props[ws].to_collapse === 'normal') {
2106 block.el.style.whiteSpace = null
2108 block.el.style.whiteSpace = ws_props[ws].to_collapse
2110 this.update_style_from_el(block)
2114 // note: space after <br> colapses, but not space before
2115 // check for spaces that would collapse without help
2116 eats_start_sp = true // if the next node starts with space it collapses (unless pre)
2118 for (i = 0; i < run.length; ++i) {
2120 if (n.type === 'tag') {
2121 if (n.name === 'br') {
2122 eats_start_sp = true
2124 eats_start_sp = false
2127 need_preserve = false
2128 if (n.type !== 'text') {
2129 console.log("bug #232308")
2132 if (eats_start_sp) {
2133 if (is_space_code(n.text.charCodeAt(0))) {
2134 need_preserve = true
2137 if (!need_preserve) {
2138 need_preserve = multi_sp_regex.test(n.text)
2140 if (need_preserve) {
2141 // do we have it already?
2142 ws = this.computed_style(n, 'white-space')
2143 if (ws_props[ws] != null ? !ws_props[ws].space : true) {
2144 // 2nd arg is ideal target for css rule
2145 ws = this.preserve_space(n, block)
2147 eats_start_sp = false
2149 if (is_space_code(n.text.charCodeAt(n.text.length - 1))) {
2150 ws = this.computed_style(n, 'white-space')
2151 if ((ref1 = ws_props[ws]) != null ? ref1.space : void 0) {
2152 eats_start_sp = false
2154 eats_start_sp = true
2157 eats_start_sp = false
2162 // check if text ends with a collapsable space
2163 if (run.length > 0) {
2164 last = run[run.length - 1]
2165 if (last.type === 'text') {
2166 if (eats_start_sp) {
2167 this.preserve_space(last, block)
2172 PeachHTML5Editor.prototype.css_clear = function(n, prop) {
2173 var css_delimiter_regex, i, styles
2174 if (n.attrs.style == null) {
2177 if (n.attrs.style === '') {
2180 css_delimiter_regex = new RegExp('\s*;\s*', 'g') // FIXME make this global
2181 styles = n.attrs.style.trim().split(css_delimiter)
2182 if (!(styles.length > 0)) {
2185 if (styles[styles.length - 1] === '') {
2187 if (!(styles.length > 0)) {
2192 while (i < styles.length) {
2193 if (styles[i].substr(0, 12) === 'white-space:') {
2200 // WARNING: after calling this one or more times, you MUST:
2201 // if it's inline: call @text_cleanup
2203 PeachHTML5Editor.prototype.remove_node = function(n) {
2205 i = n.parent.children.indexOf(n)
2207 throw "BUG #9187112313"
2209 n.el.parentNode.removeChild(n.el)
2210 n.parent.children.splice(i, 1)
2212 // remove a node from the tree/dom, insert into new_parent before insert_before?end
2213 // WARNING: after calling this one or more times, you MUST:
2214 // if it's inline: call @text_cleanup
2216 PeachHTML5Editor.prototype.move_node = function(n, new_parent, insert_before) {
2218 if (insert_before == null) {
2219 insert_before = null
2221 i = n.parent.children.indexOf(n)
2223 throw "Error: tried to remove node, but it's not in it's parents list of children"
2226 if (insert_before != null) {
2227 before_i = new_parent.children.indexOf(insert_before)
2229 throw "Error: tried to move a node to be before a non-existent node"
2231 insert_before = insert_before.el
2234 if (insert_before != null) {
2235 new_parent.el.insertBefore(n.el, insert_before)
2236 new_parent.children.splice(before_i, 0, n)
2238 new_parent.el.appendChild(n.el, insert_before)
2239 new_parent.children.push(n)
2241 n.parent = new_parent
2243 // remove it, forget where it was
2244 PeachHTML5Editor.prototype.kill_cursor = function() {
2245 if (this.cursor_visible) {
2246 this.cursor_el.parentNode.removeChild(this.cursor_el)
2247 this.cursor_visible = false
2252 PeachHTML5Editor.prototype.move_cursor = function(cursor) {
2254 this.cursor_ideal_x = cursor.x
2255 this.cursor = cursor
2256 if (!this.cursor_visible) {
2257 this.cursor_el = domify(this.outer_idoc, {div: { id: 'cursor'}})
2258 this.overlay.appendChild(this.cursor_el)
2259 this.cursor_visible = true
2261 this.cursor_el.style.left = (cursor.x + overlay_padding - 1) + "px"
2267 this.cursor_el.style.top = (cursor.y + overlay_padding + Math.round(height * .07)) + "px"
2268 this.cursor_el.style.height = (Math.round(height * 0.82)) + "px"
2269 this.annotate(cursor.n)
2270 this.scroll_into_view(cursor.y, height)
2272 PeachHTML5Editor.prototype.scroll_into_view = function(y, h) {
2273 var downmost, upmost
2277 y += overlay_padding // convert units from @idoc to @wrap2
2278 // very top of document
2279 if (y <= breathing_room) {
2280 this.wrap2.scrollTop = 0
2283 // very bottom of document
2284 if (y + h >= this.wrap2.scrollHeight - breathing_room) {
2285 this.wrap2.scrollTop = this.wrap2.scrollHeight - this.wrap2_height
2288 // The most scrolled up (lowest value for scrollTop) that would be OK
2289 upmost = y + h + breathing_room - this.wrap2_height
2290 upmost = Math.max(upmost, 0)
2291 // the most scrolled down (highest value for scrollTop) that would be OK
2292 downmost = y - breathing_room
2293 downmost = Math.min(downmost, this.wrap2.scrollHeight - this.wrap2_height)
2294 if (upmost > downmost) { // means h is too big to fit
2295 // scroll so top is visible
2296 this.wrap2.scrollTop = downmost
2299 if (this.wrap2.scrollTop < upmost) {
2300 this.wrap2.scrollTop = upmost
2303 if (this.wrap2.scrollTop > downmost) {
2304 this.wrap2.scrollTop = downmost
2308 PeachHTML5Editor.prototype.annotate = function(n) {
2309 var alpha, ann_box, ann_tag, bounds, prev_bounds
2310 while (this.matting.length > 0) {
2311 this.overlay.removeChild(this.matting[0])
2312 this.matting.shift()
2317 prev_bounds = {x: 0, y: 0, w: 0, h: 0}
2319 while (((n != null ? n.el : void 0) != null) && n !== this.tree_parent) {
2320 if (n.type === 'text') {
2324 bounds = get_el_bounds(n.el)
2325 if (bounds == null) {
2328 if (bounds.x === prev_bounds.x && bounds.y === prev_bounds.y && bounds.w === prev_bounds.w && bounds.h === prev_bounds.h) {
2332 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});
2333 this.overlay.appendChild(ann_box)
2334 this.matting.push(ann_box)
2335 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 + " "})]}})
2336 this.overlay.appendChild(ann_tag)
2337 this.matting.push(ann_tag)
2342 PeachHTML5Editor.prototype.pretty_html = function(tree, indent, parent_flags) {
2343 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
2344 if (indent == null) {
2347 if (parent_flags == null) {
2355 want_nl = parent_flags.want_nl
2356 prev_in_flow_is_text = false
2357 prev_in_flow_is_block = false
2358 for (i = 0; i < tree.length; ++i) {
2366 if (n.name === 'br') {
2370 cs = this.iframe.contentWindow.getComputedStyle(n.el, null)
2371 whitespace = cs.getPropertyValue('white-space')
2372 display = cs.getPropertyValue('display')
2373 position = cs.getPropertyValue('position')
2374 float = cs.getPropertyValue('float')
2375 visibility = cs.getPropertyValue('visibility')
2376 if (n.name === 'textarea') {
2377 inner_flags.pre_ish = true
2379 inner_flags.pre_ish = whitespace.substr(0, 3) === 'pre'
2393 if ('display' === 'none') {
2396 switch (visibility) {
2410 inner_flags.block = false
2411 is_block = in_flow_block = false
2413 case 'inline-black':
2414 inner_flags.block = true
2415 is_block = in_flow_block = false
2418 inner_flags.block = true
2420 in_flow_block = in_flow
2427 in_flow_block = false
2429 default: // 'comment', 'doctype'
2433 in_flow_block = false
2435 // print whitespace if we can
2436 if (!parent_flags.pre_ish) {
2437 if (!(prev_in_flow_is_text && is_br)) {
2438 if ((i === 0 && parent_flags.block) || in_flow_block || prev_in_flow_is_block) {
2450 for (k in n.attrs) {
2451 attr_keys.unshift(k)
2454 for (j = 0; j < attr_keys.length; ++j) {
2457 if (n.attrs[k].length > 0) {
2458 ret += "=\"" + (enc_attr(n.attrs[k])) + "\""
2462 if (void_elements[n.name] == null) {
2463 if (inner_flags.block) {
2464 next_indent = indent + ' '
2466 next_indent = indent
2468 if (n.children.length) {
2469 ret += this.pretty_html(n.children, next_indent, inner_flags)
2471 ret += "</" + n.name + ">"
2475 if (n.parent != null ? plaintext_elements[n.parent.name] : false) {
2477 } else if (n.parent != null ? newline_eating_elements[n.parent.name] && n.text.charAt(0) === "\n" : false) {
2478 ret += enc_text("\n" + n.text)
2480 ret += enc_text(n.text)
2484 ret += "<!--" + n.text + "-->" // TODO encode?
2487 ret += "<!DOCTYPE " + n.name
2488 if ((n.public_identifier != null) && n.public_identifier.length > 0) {
2489 ret += " \"" + n.public_identifier + "\""
2491 if ((n.system_identifier != null) && n.system_identifier.length > 0) {
2492 ret += " \"" + n.system_identifier + "\""
2498 prev_in_flow_is_text = is_text
2499 prev_in_flow_is_block = is_block || (in_flow && is_br)
2503 // output final newline if allowed
2504 if (!parent_flags.pre_ish) {
2505 if (prev_in_flow_is_block || parent_flags.block) {
2506 ret += "\n" + (indent.substr(4))
2512 PeachHTML5Editor.prototype.onblur = function() {
2513 this.editor_is_focused = false
2516 PeachHTML5Editor.prototype.have_focus = function() {
2517 if (!this.editor_is_focused) {
2518 this.input_el.focus()
2519 this.editor_is_focused = true
2523 window.peach_html5_editor = function() {
2524 // coffeescript: return new PeachHTML5Editor args...
2525 // compiles to below... there must be a better way
2527 args = 1 <= arguments.length ? slice.call(arguments, 0) : []
2528 return (function(func, args, ctor) {
2529 ctor.prototype = func.prototype
2530 var child = new ctor, result = func.apply(child, args)
2531 return Object(result) === result ? result : child
2532 })(PeachHTML5Editor, args, function(){})
2537 // test in browser: peach_html5_editor(document.getElementsByTagName('textarea')[0])