define([
'libs/jquery-1.9.1.min',
-'modules/documentCanvas/canvas/documentElement'
-], function($, documentElement) {
+'libs/underscore-min',
+'libs/backbone-min',
+'modules/documentCanvas/canvas/documentElement',
+'modules/documentCanvas/canvas/utils'
+], function($, _, Backbone, documentElement, utils) {
'use strict';
-var Canvas = function(xml) {
- xml = $.parseXML(xml);
- this.d = xml !== null ? $(xml.childNodes[0]) : null;
-}
+var Canvas = function(wlxml, publisher) {
+ this.eventBus = _.extend({}, Backbone.Events);
+ this.loadWlxml(wlxml);
+ this.publisher = publisher ? publisher : function() {};
+};
$.extend(Canvas.prototype, {
+ loadWlxml: function(wlxml) {
+ var d = wlxml ? $($.trim(wlxml)) : null;
+ if(d) {
+ this.wrapper = $('<div>').addClass('canvas-wrapper').attr('contenteditable', true);
+ this.wrapper.append(d);
+ var canvas = this;
+
+ this.wrapper.find('*').replaceWith(function() {
+ var currentTag = $(this);
+ if(currentTag.attr('wlxml-tag'))
+ return;
+
+ var meta = {}, others = {};
+ for(var i = 0; i < this.attributes.length; i++) {
+ var attr = this.attributes[i];
+ if(attr.name.substr(0, 5) === 'meta-')
+ meta[attr.name.substr(5)] = attr.value;
+ else if(attr.name !== 'class')
+ others[attr.name] = attr.value;
+ }
+
+ var element = documentElement.DocumentNodeElement.create({
+ tag: currentTag.prop('tagName').toLowerCase(),
+ klass: currentTag.attr('class'),
+ meta: meta,
+ others: others,
+ rawChildren: currentTag.contents()
+ }, canvas);
+
+ ['orig-before', 'orig-after', 'orig-begin', 'orig-end'].forEach(function(attr) {
+ element.data(attr, '');
+ });
+ return element.dom();
+ });
+
+ var FIRST_CONTENT_INDEX = 0;
+
+ // @@ TODO - refactor!
+ var getNode = function(element) {
+ return element.children('[document-element-content]');
+ }
+
+ this.wrapper.find(':not(iframe)').addBack().contents()
+ .filter(function() {return this.nodeType === Node.TEXT_NODE})
+ .each(function() {
+
+ // TODO: use DocumentElement API
+
+ var el = $(this),
+ text = {original: el.text(), trimmed: $.trim(el.text())},
+ elParent = el.parent(),
+ hasSpanParent = elParent.attr('wlxml-tag') === 'span',
+ hasSpanBefore = el.prev().length > 0 && getNode($(el.prev()[0])).attr('wlxml-tag') === 'span',
+ hasSpanAfter = el.next().length > 0 && getNode($(el.next()[0])).attr('wlxml-tag') === 'span';
+
+ if(el.parent().hasClass('canvas-widget'))
+ return true; // continue
+
+ var addInfo = function(toAdd, where) {
+ var parentContents = elParent.contents(),
+ idx = parentContents.index(el[0]),
+ prev = idx > FIRST_CONTENT_INDEX ? parentContents[idx-1] : null,
+ next = idx < parentContents.length - 1 ? parentContents[idx+1] : null,
+ target, key;
+
+ if(where === 'above') {
+ target = prev ? $(prev) : elParent.parent();
+ key = prev ? 'orig-after' : 'orig-begin';
+ } else if(where === 'below') {
+ target = next ? $(next) : elParent.parent();
+ key = next ? 'orig-before' : 'orig-end';
+ } else { throw new Object;}
+
+ target.data(key, toAdd);
+ }
+
+ text.transformed = text.trimmed;
+
+ if(hasSpanParent || hasSpanBefore || hasSpanAfter) {
+ var startSpace = /\s/g.test(text.original.substr(0,1)),
+ endSpace = /\s/g.test(text.original.substr(-1)) && text.original.length > 1;
+ text.transformed = (startSpace && (hasSpanParent || hasSpanBefore) ? ' ' : '')
+ + text.trimmed
+ + (endSpace && (hasSpanParent || hasSpanAfter) ? ' ' : '');
+ } else {
+ if(text.trimmed.length === 0 && text.original.length > 0 && elParent.contents().length === 1)
+ text.transformed = ' ';
+ }
+
+ if(!text.transformed) {
+ addInfo(text.original, 'below');
+ el.remove();
+ return true; // continue
+ }
+
+ if(text.transformed !== text.original) {
+ if(!text.trimmed) {
+ addInfo(text.original, 'below');
+ } else {
+ var startingMatch = text.original.match(/^\s+/g),
+ endingMatch = text.original.match(/\s+$/g),
+ startingWhiteSpace = startingMatch ? startingMatch[0] : null,
+ endingWhiteSpace = endingMatch ? endingMatch[0] : null;
+
+ if(endingWhiteSpace) {
+ if(text.transformed[text.transformed.length - 1] === ' ' && endingWhiteSpace[0] === ' ')
+ endingWhiteSpace = endingWhiteSpace.substr(1);
+ addInfo(endingWhiteSpace, 'below');
+ }
+
+ if(startingWhiteSpace) {
+ if(text.transformed[0] === ' ' && startingWhiteSpace[startingWhiteSpace.length-1] === ' ')
+ startingWhiteSpace = startingWhiteSpace.substr(0, startingWhiteSpace.length -1);
+ addInfo(startingWhiteSpace, 'above');
+ }
+ }
+ }
+
+ var element = documentElement.DocumentTextElement.create({text: text.transformed});
+ el.replaceWith(element.dom());
+ });
+
+ this.d = this.wrapper.children(0);
+
+ var KEYS = {
+ ENTER: 13,
+ ARROW_LEFT: 37,
+ ARROW_UP: 38,
+ ARROW_RIGHT: 39,
+ ARROW_DOWN: 40,
+ BACKSPACE: 8,
+ DELETE: 46,
+ X: 88
+ }
+
+ this.wrapper.on('keyup', function(e) {
+ if(e.which >= 37 && e.which <= 40) {
+ var element = canvas.getCursor().getPosition().element,
+ caretTo = false;
+ if(!element) {
+ // Chrome hack
+ var direction;
+ if(e.which === KEYS.ARROW_LEFT || e.which === KEYS.ARROW_UP) {
+ direction = 'above';
+ caretTo = 'end';
+ } else {
+ direction = 'below';
+ caretTo = 'start';
+ }
+ element = canvas.getDocumentElement(utils.nearestInDocumentOrder('[document-text-element]:visible', direction, window.getSelection().focusNode));
+ }
+ canvas.setCurrentElement(element, {caretTo: caretTo});
+ }
+ });
+
+ this.wrapper.on('keydown', function(e) {
+ var cursor = canvas.getCursor(),
+ position = canvas.getCursor().getPosition(),
+ element = position.element;
+ if(e.which >= 37 && e.which <= 40) {
+
+ if(element && (element instanceof documentElement.DocumentTextElement)) {
+ if(element.isEmpty()) {
+ var direction, caretTo;
+ if(e.which === KEYS.ARROW_LEFT || e.which === KEYS.ARROW_UP) {
+ direction = 'above';
+ caretTo = 'end';
+ } else {
+ direction = 'below';
+ caretTo = 'start';
+ }
+ var el = canvas.getDocumentElement(utils.nearestInDocumentOrder('[document-text-element]', direction, window.getSelection().focusNode))
+ canvas.setCurrentElement(element, {caretTo: caretTo});
+ } else {
+ var txt = element.dom().contents()[0].data;
+ if(e.which === KEYS.ARROW_LEFT && position.offset > 1 && txt.charAt(position.offset-2) === utils.unicode.ZWS) {
+ e.preventDefault();
+ canvas._moveCaretToTextElement(element, position.offset-2);
+ }
+ if(e.which === KEYS.ARROW_RIGHT && position.offset < txt.length - 1 && txt.charAt(position.offset+1) === utils.unicode.ZWS) {
+ e.preventDefault();
+ canvas._moveCaretToTextElement(element, position.offset+2);
+ }
+ }
+ }
+
+
+ }
+
+ var selectsWholeTextElement = function() {
+ if(cursor.isSelecting() && cursor.getSelectionStart().offsetAtBeginning && cursor.getSelectionEnd().offsetAtEnd)
+ return true;
+ return false;
+ }
+
+ if(e.which === KEYS.X && e.ctrlKey && selectsWholeTextElement()) {
+ e.preventDefault();
+ }
+
+ if(e.which === KEYS.BACKSPACE || e.which === KEYS.DELETE) {
+ if(cursor.isSelecting() && !cursor.isSelectingWithinElement()) {
+ e.preventDefault();
+ return;
+ }
+
+ var cursorAtOperationEdge = position.offsetAtBeginning;
+ if(e.which === KEYS.DELETE) {
+ cursorAtOperationEdge = position.offsetAtEnd;
+ }
+
+ if(element.getText().length === 1 || selectsWholeTextElement()) {
+ e.preventDefault();
+ element.setText('');
+ }
+ else if(element.isEmpty()) {
+
+ var direction = 'above',
+ caretTo = 'end';
+
+ if(e.which === KEYS.DELETE) {
+ direction = 'below';
+ caretTo = 'start';
+ }
+
+ e.preventDefault();
+
+ var parent = element.parent(),
+ grandParent = parent ? parent.parent() : null,
+ goto;
+ if(parent.children().length === 1) {
+ if(grandParent && grandParent.children().length === 1) {
+ goto = grandParent.append({text: ''});
+ } else {
+ goto = canvas.getDocumentElement(utils.nearestInDocumentOrder('[document-text-element]', direction, element.dom()[0]));
+ }
+ parent.detach();
+ } else {
+ goto = canvas.getDocumentElement(utils.nearestInDocumentOrder('[document-text-element]', direction, element.dom()[0]));
+ element.detach();
+ }
+ canvas.setCurrentElement(goto, {caretTo: caretTo});
+ }
+ else if(cursorAtOperationEdge) {
+ // todo
+ e.preventDefault();
+ }
+ }
+
+ if(e.which === KEYS.ENTER) {
+ e.preventDefault();
+ var cursor = canvas.getCursor(),
+ position = cursor.getPosition(),
+ element = position.element;
+
+ if(!cursor.isSelecting()) {
+ if(e.ctrlKey) {
+ var added = element.after({tag: 'block'});
+ added.append({text:''});
+ canvas.setCurrentElement(added, {caretTo: 'start'});
+
+ } else {
+
+ if(!(element.parent().parent())) {
+ return false; // top level element is unsplittable
+ }
+
+ var elements = position.element.split({offset: position.offset}),
+ newEmpty,
+ goto;
+
+ if(position.offsetAtBeginning)
+ newEmpty = elements.first;
+ else if(position.offsetAtEnd)
+ newEmpty = elements.second;
+ if(newEmpty) {
+ goto = newEmpty.append(documentElement.DocumentTextElement.create({text: ''}, this));
+ canvas.setCurrentElement(goto);
+ }
+ }
+ }
+ }
+ });
+
+ this.wrapper.on('click', '[document-node-element], [document-text-element]', function(e) {
+ e.stopPropagation();
+ canvas.setCurrentElement(canvas.getDocumentElement(e.currentTarget), {caretTo: false});
+ });
+
+ var observer = new MutationObserver(function(mutations) {
+ mutations.forEach(function(mutation) {
+ if(documentElement.DocumentTextElement.isContentContainer(mutation.target) && mutation.target.data === '')
+ mutation.target.data = utils.unicode.ZWS;
+ });
+ });
+ var config = { attributes: false, childList: false, characterData: true, subtree: true, characterDataOldValue: true};
+ observer.observe(this.d[0], config);
+
+
+ this.wrapper.on('mouseover', '[document-node-element], [document-text-element]', function(e) {
+ var el = canvas.getDocumentElement(e.currentTarget);
+ if(!el)
+ return;
+ e.stopPropagation();
+ if(el instanceof documentElement.DocumentTextElement)
+ el = el.parent();
+ el.toggleLabel(true);
+ });
+ this.wrapper.on('mouseout', '[document-node-element], [document-text-element]', function(e) {
+ var el = canvas.getDocumentElement(e.currentTarget);
+ if(!el)
+ return;
+ e.stopPropagation();
+ if(el instanceof documentElement.DocumentTextElement)
+ el = el.parent();
+ el.toggleLabel(false);
+ });
+
+ this.eventBus.on('elementToggled', function(toggle, element) {
+ if(!toggle) {
+ element = canvas.getDocumentElement(utils.nearestInDocumentOrder('[document-text-element]:visible', 'above', element.dom()[0]));
+ canvas.setCurrentElement(element);
+ }
+ })
+
+ } else {
+ this.d = null;
+ }
+ },
+
+ view: function() {
+ return this.wrapper;
+ },
+
doc: function() {
if(this.d === null)
return null;
- return documentElement.wrap(this.d.get(0)); //{wlxmlTag: this.d.prop('tagName')};
+ return documentElement.DocumentNodeElement.fromHTMLElement(this.d.get(0), this); //{wlxmlTag: this.d.prop('tagName')};
+ },
+
+ wrapText: function(params) {
+ params = _.extend({textNodeIdx: 0}, params);
+ if(typeof params.textNodeIdx === 'number')
+ params.textNodeIdx = [params.textNodeIdx];
+
+ var childrenInside = params.inside.children(),
+ idx1 = Math.min.apply(Math, params.textNodeIdx),
+ idx2 = Math.max.apply(Math, params.textNodeIdx),
+ textNode1 = childrenInside[idx1],
+ textNode2 = childrenInside[idx2],
+ sameNode = textNode1.sameNode(textNode2),
+ prefixOutside = textNode1.getText().substr(0, params.offsetStart),
+ prefixInside = textNode1.getText().substr(params.offsetStart),
+ suffixInside = textNode2.getText().substr(0, params.offsetEnd),
+ suffixOutside = textNode2.getText().substr(params.offsetEnd)
+ ;
+
+ var wrapperElement = documentElement.DocumentNodeElement.create({tag: params._with.tag, klass: params._with.klass});
+ textNode1.after(wrapperElement);
+ textNode1.detach();
+
+ if(prefixOutside.length > 0)
+ wrapperElement.before({text:prefixOutside});
+ if(sameNode) {
+ var core = textNode1.getText().substr(params.offsetStart, params.offsetEnd - params.offsetStart);
+ wrapperElement.append({text: core});
+ } else {
+ textNode2.detach();
+ if(prefixInside.length > 0)
+ wrapperElement.append({text: prefixInside});
+ for(var i = idx1 + 1; i < idx2; i++) {
+ wrapperElement.append(childrenInside[i]);
+ }
+ if(suffixInside.length > 0)
+ wrapperElement.append({text: suffixInside});
+ }
+ if(suffixOutside.length > 0)
+ wrapperElement.after({text: suffixOutside});
+ return wrapperElement;
+ },
+
+ wrapElements: function(params) {
+ if(!(params.element1.parent().sameNode(params.element2.parent())))
+ return;
+
+ var parent = params.element1.parent(),
+ parentChildren = parent.children(),
+ wrapper = documentElement.DocumentNodeElement.create({
+ tag: params._with.tag,
+ klass: params._with.klass}),
+ idx1 = parent.childIndex(params.element1),
+ idx2 = parent.childIndex(params.element2);
+
+ if(idx1 > idx2) {
+ var tmp = idx1;
+ idx1 = idx2;
+ idx2 = tmp;
+ }
+
+ var insertingMethod, insertingTarget;
+ if(idx1 === 0) {
+ insertingMethod = 'prepend';
+ insertingTarget = parent;
+ } else {
+ insertingMethod = 'after';
+ insertingTarget = parentChildren[idx1-1];
+ }
+
+ for(var i = idx1; i <= idx2; i++) {
+ wrapper.append(parentChildren[i].detach());
+ }
+
+ insertingTarget[insertingMethod](wrapper);
+ return wrapper;
+ },
+
+ getSiblingParents: function(params) {
+ var parents1 = [params.element1].concat(params.element1.parents()).reverse(),
+ parents2 = [params.element2].concat(params.element2.parents()).reverse(),
+ noSiblingParents = null;
+
+ if(parents1.length === 0 || parents2.length === 0 || !(parents1[0].sameNode(parents2[0])))
+ return noSiblingParents;
+
+ var i;
+ for(i = 0; i < Math.min(parents1.length, parents2.length); i++) {
+ if(parents1[i].sameNode(parents2[i]))
+ continue;
+ break;
+ }
+ return {element1: parents1[i], element2: parents2[i]};
+ },
+
+ getDocumentElement: function(from) {
+ if(from instanceof HTMLElement || from instanceof Text) {
+ return documentElement.DocumentElement.fromHTMLElement(from, this);
+ }
+ },
+ getCursor: function() {
+ return new Cursor(this);
+ },
+
+ list: {},
+
+
+ getCurrentNodeElement: function() {
+ return this.getDocumentElement(this.wrapper.find('.current-node-element').parent()[0]);
+ },
+
+ getCurrentTextElement: function() {
+ return this.getDocumentElement(this.wrapper.find('.current-text-element')[0]);
+ },
+
+
+
+ setCurrentElement: function(element, params) {
+ params = _.extend({caretTo: 'end'}, params);
+ var findFirstDirectTextChild = function(e, nodeToLand) {
+ var byBrowser = this.getCursor().getPosition().element;
+ if(byBrowser && byBrowser.parent().sameNode(nodeToLand))
+ return byBrowser;
+ var children = e.children();
+ for(var i = 0; i < children.length; i++) {
+ if(children[i] instanceof documentElement.DocumentTextElement)
+ return children[i];
+ }
+ return null;
+ }.bind(this);
+ var _markAsCurrent = function(element) {
+ if(element instanceof documentElement.DocumentTextElement) {
+ this.wrapper.find('.current-text-element').removeClass('current-text-element');
+ element.dom().addClass('current-text-element');
+ } else {
+ this.wrapper.find('.current-node-element').removeClass('current-node-element')
+ element._container().addClass('current-node-element');
+ this.publisher('currentElementChanged', element);
+ }
+ }.bind(this);
+
+
+ var isTextElement = element instanceof documentElement.DocumentTextElement,
+ nodeElementToLand = isTextElement ? element.parent() : element,
+ textElementToLand = isTextElement ? element : findFirstDirectTextChild(element, nodeElementToLand),
+ currentTextElement = this.getCurrentTextElement(),
+ currentNodeElement = this.getCurrentNodeElement();
+
+ if(currentTextElement && !(currentTextElement.sameNode(textElementToLand)))
+ this.wrapper.find('.current-text-element').removeClass('current-text-element');
+
+ if(textElementToLand) {
+ _markAsCurrent(textElementToLand);
+ if(params.caretTo || !textElementToLand.sameNode(this.getCursor().getPosition().element))
+ this._moveCaretToTextElement(textElementToLand, params.caretTo); // as method on element?
+ if(!(textElementToLand.sameNode(currentTextElement)))
+ this.publisher('currentTextElementSet', textElementToLand);
+ } else {
+ document.getSelection().removeAllRanges();
+ }
+
+ if(!(currentNodeElement && currentNodeElement.sameNode(nodeElementToLand))) {
+ _markAsCurrent(nodeElementToLand);
+
+ this.publisher('currentNodeElementSet', nodeElementToLand);
+ }
+ },
+
+ _moveCaretToTextElement: function(element, where) {
+ var range = document.createRange(),
+ node = element.dom().contents()[0];
+
+ if(typeof where !== 'number') {
+ range.selectNodeContents(node);
+ } else {
+ range.setStart(node, where);
+ }
+
+ var collapseArg = true;
+ if(where === 'end')
+ collapseArg = false;
+ range.collapse(collapseArg);
+
+ var selection = document.getSelection();
+
+ selection.removeAllRanges();
+ selection.addRange(range);
+ this.wrapper.focus(); // FF requires this for caret to be put where range colllapses, Chrome doesn't.
+ },
+
+ setCursorPosition: function(position) {
+ if(position.element)
+ this._moveCaretToTextElement(position.element, position.offset);
+ },
+
+ toXML: function() {
+ var parent = $('<div>'),
+ parts = this.doc().toXML(0);
+ parent.append(parts);
+ return parent.html();
}
+});
+
+$.extend(Canvas.prototype.list, {
+ create: function(params) {
+ if(!(params.element1.parent().sameNode(params.element2.parent())))
+ return false;
+
+ var parent = params.element1.parent();
+
+ if(parent.childIndex(params.element1) > parent.childIndex(params.element2)) {
+ var tmp = params.element1;
+ params.element1 = params.element2;
+ params.element2 = tmp;
+ }
+
+ var elementsToWrap = [];
+
+ var place = 'before';
+ var canvas = this;
+ parent.children().some(function(element) {
+ var _e = element;
+ if(element.sameNode(params.element1))
+ place = 'inside';
+ if(place === 'inside') {
+ if(element instanceof documentElement.DocumentTextElement) {
+ element = element.wrapWithNodeElement({tag: 'div', klass: 'list.item'});
+ if(element.children()[0].sameNode(params.element1))
+ params.element1 = element;
+ }
+ element.setWlxmlClass('item');
+ elementsToWrap.push(element);
+ }
+ if(_e.sameNode(params.element2))
+ return true;
+ });
+
+ var listElement = documentElement.DocumentNodeElement.create({tag: 'div', klass: 'list-items' + (params.type === 'enum' ? '-enum' : '')});
+
+ var toret;
+ if(parent.is('list')) {
+ listElement.wrapWithNodeElement({tag: 'div', klass: 'item'});
+ toret = listElement.parent();
+ } else {
+ toret = listElement;
+ }
+
+ params.element1.before(toret);
+
+ elementsToWrap.forEach(function(element) {
+ element.detach();
+ listElement.append(element);
+ });
+ },
+ extractItems: function(params) {
+ params = _.extend({merge: true}, params);
+ var list = params.element1.parent();
+ if(!list.is('list') || !(list.sameNode(params.element2.parent())))
+ return false;
+
+ var idx1 = list.childIndex(params.element1),
+ idx2 = list.childIndex(params.element2),
+ precedingItems = [],
+ extractedItems = [],
+ succeedingItems = [],
+ items = list.children(),
+ listIsNested = list.parent().getWlxmlClass() === 'item',
+ i;
+
+ if(idx1 > idx2) {
+ var tmp = idx1; idx1 = idx2; idx2 = tmp;
+ }
+
+ items.forEach(function(item, idx) {
+ if(idx < idx1)
+ precedingItems.push(item);
+ else if(idx >= idx1 && idx <= idx2) {
+ extractedItems.push(item);
+ }
+ else {
+ succeedingItems.push(item);
+ }
+ });
+ var reference = listIsNested ? list.parent() : list;
+ if(succeedingItems.length === 0) {
+ var reference_orig = reference;
+ extractedItems.forEach(function(item) {
+ reference.after(item);
+ reference = item;
+ if(!listIsNested)
+ item.setWlxmlClass(null);
+ });
+ if(precedingItems.length === 0)
+ reference_orig.detach();
+ } else if(precedingItems.length === 0) {
+ extractedItems.forEach(function(item) {
+ reference.before(item);
+ if(!listIsNested)
+ item.setWlxmlClass(null);
+ });
+ } else {
+ extractedItems.forEach(function(item) {
+ reference.after(item);
+ if(!listIsNested)
+ item.setWlxmlClass(null);
+ reference = item;
+ });
+ var secondList = documentElement.DocumentNodeElement.create({tag: 'div', klass:'list-items'}, this),
+ toAdd = secondList;
+
+ if(listIsNested) {
+ toAdd = secondList.wrapWithNodeElement({tag: 'div', klass:'item'});
+ }
+ succeedingItems.forEach(function(item) {
+ secondList.append(item);
+ });
+
+ reference.after(toAdd);
+ }
+ if(!params.merge && listIsNested) {
+ return this.extractItems({element1: extractedItems[0], element2: extractedItems[extractedItems.length-1]});
+ }
+ return true;
+ },
+ areItemsOfTheSameList: function(params) {
+ var e1 = params.element1,
+ e2 = params.element2;
+ return e1.parent().sameNode(e2.parent())
+ && e1.parent().is('list');
+ }
});
+
+var Cursor = function(canvas) {
+ this.canvas = canvas;
+};
+
+$.extend(Cursor.prototype, {
+ isSelecting: function() {
+ var selection = window.getSelection();
+ return !selection.isCollapsed;
+ },
+ isSelectingWithinElement: function() {
+ return this.isSelecting() && this.getSelectionStart().element.sameNode(this.getSelectionEnd().element);
+ },
+ isSelectingSiblings: function() {
+ return this.isSelecting() && this.getSelectionStart().element.parent().sameNode(this.getSelectionEnd().element.parent());
+ },
+ getPosition: function() {
+ return this.getSelectionAnchor();
+ },
+ getSelectionStart: function() {
+ return this.getSelectionBoundry('start');
+ },
+ getSelectionEnd: function() {
+ return this.getSelectionBoundry('end');
+ },
+ getSelectionAnchor: function() {
+ return this.getSelectionBoundry('anchor');
+ },
+ getSelectionFocus: function() {
+ return this.getSelectionBoundry('focus');
+ },
+ getSelectionBoundry: function(which) {
+ var selection = window.getSelection(),
+ anchorElement = this.canvas.getDocumentElement(selection.anchorNode),
+ focusElement = this.canvas.getDocumentElement(selection.focusNode);
+
+ var getOffset = function(where) {
+ var toret, node;
+ if(where === 'anchor') {
+ node = selection.anchorNode;
+ toret = selection.anchorOffset;
+ } else {
+ node = selection.focusNode;
+ toret = selection.focusOffset;
+ }
+
+ if(toret === 1 && node.data.charAt(0) === utils.unicode.ZWS)
+ toret = 0;
+ else if((toret === node.data.length - 1) && (node.data.charAt(node.data.length - 1) === utils.unicode.ZWS))
+ toret++;
+ return toret;
+ }
+
+ if((!anchorElement) || (anchorElement instanceof documentElement.DocumentNodeElement) || (!focusElement) || focusElement instanceof documentElement.DocumentNodeElement)
+ return {};
+
+ if(which === 'anchor') {
+ return {
+ element: anchorElement,
+ offset: getOffset('anchor'),
+ offsetAtBeginning: getOffset('anchor') === 0,
+ offsetAtEnd: selection.anchorNode.data.length === getOffset('anchor')
+ };
+ }
+ if(which === 'focus') {
+ return {
+ element: focusElement,
+ offset: getOffset('focus'),
+ offsetAtBeginning: getOffset('focus') === 0,
+ offsetAtEnd: selection.focusNode.data.length === getOffset('focus')
+ };
+ }
+
+ var element,
+ offset;
+
+ if(anchorElement.parent().sameNode(focusElement.parent())) {
+ var parent = anchorElement.parent(),
+ anchorFirst = parent.childIndex(anchorElement) < parent.childIndex(focusElement);
+ if(anchorFirst) {
+ if(which === 'start') {
+ element = anchorElement;
+ offset = getOffset('anchor')
+ }
+ else if(which === 'end') {
+ element = focusElement,
+ offset = getOffset('focus')
+ }
+ } else {
+ if(which === 'start') {
+ element = focusElement,
+ offset = getOffset('focus')
+ }
+ else if(which === 'end') {
+ element = anchorElement;
+ offset = getOffset('anchor')
+ }
+ }
+ } else {
+ // TODO: Handle order via https://developer.mozilla.org/en-US/docs/Web/API/Node.compareDocumentPosition
+ if(which === 'start') {
+ element = anchorElement;
+ offset = getOffset('anchor')
+ } else {
+ element = focusElement;
+ offset = getOffset('focus')
+ }
+ }
+
+ var nodeLen = (element.sameNode(focusElement) ? selection.focusNode : selection.anchorNode).length;
+ return {
+ element: element,
+ offset: offset,
+ offsetAtBeginning: offset === 0,
+ offsetAtEnd: nodeLen === offset
+ }
+ }
+})
+
return {
- fromXML: function(xml) {
- return new Canvas(xml);
+ fromXML: function(xml, publisher) {
+ return new Canvas(xml, publisher);
}
};
fnp / fnpeditor.git / blobdiff