X-Git-Url: https://git.mdrn.pl/fnpeditor.git/blobdiff_plain/72006ca5628befdc32bb1cd31002f22c4a7c8bca..179b145075f8f90038cba27e30a4fcadd3a764ff:/modules/documentCanvas/canvas/canvas.js diff --git a/modules/documentCanvas/canvas/canvas.js b/modules/documentCanvas/canvas/canvas.js index 3ae6a3e..318a22f 100644 --- a/modules/documentCanvas/canvas/canvas.js +++ b/modules/documentCanvas/canvas/canvas.js @@ -1,50 +1,288 @@ define([ 'libs/jquery-1.9.1.min', 'libs/underscore-min', -'modules/documentCanvas/canvas/documentElement' -], function($, _, documentElement) { +'libs/backbone-min', +'modules/documentCanvas/canvas/documentElement', +'modules/documentCanvas/canvas/utils' +], function($, _, Backbone, documentElement, utils) { 'use strict'; -var Canvas = function(xml) { - xml = $.parseXML(xml); - this.d = xml !== null ? $(xml.childNodes[0]) : null; - if(this.d) { - var wrapper = $('
'); - wrapper.append(this.d); - wrapper.find(':not(iframe)').addBack().contents() - .filter(function() {return this.nodeType === Node.TEXT_NODE}) - .each(function() { - - var el = $(this); - - // TODO: use DocumentElement API - var spanParent = el.parent().prop('tagName') === 'span', - spanBefore = el.prev().length > 0 && $(el.prev()[0]).prop('tagName') === 'span', - spanAfter = el.next().length > 0 && $(el.next()[0]).prop('tagName') === 'span'; +var Canvas = function(wlxml, publisher) { + this.eventBus = _.extend({}, Backbone.Events); + this.loadWlxml(wlxml); + this.publisher = publisher ? publisher : function() {}; +}; + +$.extend(Canvas.prototype, { + + loadWlxml: function(wlxml) { + var d = wlxml ? $($.trim(wlxml)) : null; + if(d) { + this.wrapper = $('
').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(spanParent || spanBefore || spanAfter) { - var startSpace = /\s/g.test(this.data.substr(0,1)); - var endSpace = /\s/g.test(this.data.substr(-1)) && this.data.length > 1; - var trimmed = $.trim(this.data); - this.data = (startSpace && (spanParent || spanBefore) ? ' ' : '') - + trimmed - + (endSpace && (spanParent || spanAfter) ? ' ' : ''); - - } else { - this.data = $.trim(this.data); + if(hasSpanParent || hasSpanBefore || hasSpanAfter) { + var startSpace = /\s/g.test(text.original.substr(0,1)), + endSpace = /\s/g.test(text.original.substr(-1)) && text.original.length > 1; + text.transformed = (startSpace && (hasSpanParent || hasSpanBefore) ? ' ' : '') + + text.trimmed + + (endSpace && (hasSpanParent || hasSpanAfter) ? ' ' : ''); + } else { + if(text.trimmed.length === 0 && text.original.length > 0 && elParent.contents().length === 1) + text.transformed = ' '; + } + + if(!text.transformed) { + addInfo(text.original, 'below'); + el.remove(); + return true; // continue + } + + if(text.transformed !== text.original) { + if(!text.trimmed) { + addInfo(text.original, 'below'); + } else { + var startingMatch = text.original.match(/^\s+/g), + endingMatch = text.original.match(/\s+$/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); + + this.wrapper.on('keydown', function(e) { + if(e.which === 13) { + e.preventDefault(); + var cursor = canvas.getCursor(); + if(!cursor.isSelecting()) { + var position = cursor.getPosition(), + element = position.element; + + 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.d.unwrap(); - }; -}; -$.extend(Canvas.prototype, { + + var KEYS = { + ARROW_LEFT: 37, + ARROW_UP: 38, + ARROW_RIGHT: 39, + ARROW_DOWN: 40 + } + + 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) { + if(e.which >= 37 && e.which <= 40) { + var position = canvas.getCursor().getPosition(), + element = position.element; + 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); + } + } + } + + + } + }); + + 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), this); //{wlxmlTag: this.d.prop('tagName')}; + return documentElement.DocumentNodeElement.fromHTMLElement(this.d.get(0), this); //{wlxmlTag: this.d.prop('tagName')}; }, wrapText: function(params) { @@ -87,7 +325,165 @@ $.extend(Canvas.prototype, { wrapperElement.after({text: suffixOutside}); return wrapperElement; }, - list: {} + + 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 = $('
'), + parts = this.doc().toXML(0); + parent.append(parts); + return parent.html(); + } }); $.extend(Canvas.prototype.list, { @@ -107,7 +503,8 @@ $.extend(Canvas.prototype.list, { var place = 'before'; var canvas = this; - parent.children().forEach(function(element) { + parent.children().some(function(element) { + var _e = element; if(element.sameNode(params.element1)) place = 'inside'; if(place === 'inside') { @@ -119,15 +516,15 @@ $.extend(Canvas.prototype.list, { element.setWlxmlClass('item'); elementsToWrap.push(element); } - if(element.sameNode(params.element2)) - return false; + 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.wrap({tag: 'div', klass: 'item'}); + listElement.wrapWithNodeElement({tag: 'div', klass: 'item'}); toret = listElement.parent(); } else { toret = listElement; @@ -139,12 +536,208 @@ $.extend(Canvas.prototype.list, { 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); } };