From: Aleksander Ɓukasz Date: Wed, 30 Jul 2014 11:57:58 +0000 (+0200) Subject: editor: canvas - refactoring Canvas Selection X-Git-Url: https://git.mdrn.pl/fnpeditor.git/commitdiff_plain/5c99e408dd09e416fbec9c3535803e7d17bdaf44?ds=sidebyside editor: canvas - refactoring Canvas Selection --- diff --git a/src/editor/modules/documentCanvas/canvas/canvas.js b/src/editor/modules/documentCanvas/canvas/canvas.js index c964779..6f648ec 100644 --- a/src/editor/modules/documentCanvas/canvas/canvas.js +++ b/src/editor/modules/documentCanvas/canvas/canvas.js @@ -11,8 +11,9 @@ define([ 'modules/documentCanvas/canvas/genericElement', 'modules/documentCanvas/canvas/nullElement', 'modules/documentCanvas/canvas/gutter', +'modules/documentCanvas/canvas/selection', 'libs/text!./canvas.html' -], function($, _, Backbone, logging, documentElement, keyboard, utils, wlxmlListener, ElementsRegister, genericElement, nullElement, gutter, canvasTemplate) { +], function($, _, Backbone, logging, documentElement, keyboard, utils, wlxmlListener, ElementsRegister, genericElement, nullElement, gutter, selection, canvasTemplate) { 'use strict'; /* global document:false, window:false, Node:false, gettext */ @@ -316,9 +317,14 @@ $.extend(Canvas.prototype, Backbone.Events, { }, triggerSelectionChanged: function() { - this.trigger('selectionChanged', this.getSelection()); var s = this.getSelection(), - f = s.toDocumentFragment(); + f; + if(!s) { + return; + } + this.trigger('selectionChanged', s); + f = s.toDocumentFragment(); + if(f && f instanceof f.RangeFragment) { if(this.currentNodeElement) { this.currentNodeElement.updateState({active: false}); @@ -328,7 +334,7 @@ $.extend(Canvas.prototype, Backbone.Events, { }, getSelection: function() { - return new Selection(this); + return selection.fromNativeSelection(this); }, select: function(fragment) { @@ -439,69 +445,6 @@ $.extend(Canvas.prototype, Backbone.Events, { }); -var isText = function(node) { - return node && node.nodeType === Node.TEXT_NODE && $(node.parentNode).is('[document-text-element]'); -}; - -var Selection = function(canvas) { - this.canvas = canvas; - var nativeSelection = this.nativeSelection = window.getSelection(); - Object.defineProperty(this, 'type', { - get: function() { - if(nativeSelection.focusNode) { - if(nativeSelection.isCollapsed && isText(nativeSelection.focusNode)) { - return 'caret'; - } - if(isText(nativeSelection.focusNode) && isText(nativeSelection.anchorNode)) { - return 'textSelection'; - } - } - if(canvas.getCurrentNodeElement()) { - return 'node'; - } - } - }); -}; - -$.extend(Selection.prototype, { - toDocumentFragment: function() { - var doc = this.canvas.wlxmlDocument, - anchorElement = this.canvas.getDocumentElement(this.nativeSelection.anchorNode), - focusElement = this.canvas.getDocumentElement(this.nativeSelection.focusNode), - anchorNode = anchorElement ? anchorElement.wlxmlNode : null, - focusNode = focusElement ? focusElement.wlxmlNode : null; - if(this.type === 'caret') { - return doc.createFragment(doc.CaretFragment, {node: anchorNode, offset: this.nativeSelection.anchorOffset}); - } - if(this.type === 'textSelection') { - if(!anchorNode || !focusNode) { - return; - } - if(anchorNode.isSiblingOf(focusNode)) { - return doc.createFragment(doc.TextRangeFragment, { - node1: anchorNode, - offset1: this.nativeSelection.anchorOffset, - node2: focusNode, - offset2: this.nativeSelection.focusOffset, - }); - } - else { - var siblingParents = doc.getSiblingParents({node1: anchorNode, node2: focusNode}); - return doc.createFragment(doc.RangeFragment, { - node1: siblingParents.node1, - node2: siblingParents.node2 - }); - } - } - if(this.type === 'node') { - return doc.createFragment(doc.NodeFragment, {node: this.canvas.getCurrentNodeElement().wlxmlNode}); - } - }, - sameAs: function(other) { - void(other); - } -}); - var Cursor = function(canvas) { this.canvas = canvas; this.selection = window.getSelection(); diff --git a/src/editor/modules/documentCanvas/canvas/selection.js b/src/editor/modules/documentCanvas/canvas/selection.js new file mode 100644 index 0000000..790f56d --- /dev/null +++ b/src/editor/modules/documentCanvas/canvas/selection.js @@ -0,0 +1,115 @@ +define(function(require) { + +'use strict'; + +var $ = require('libs/jquery'); + +var Selection = function(canvas, params) { + this.canvas = canvas; + $.extend(this, params); +}; + +var CaretSelection = function(canvas, params) { + Selection.call(this, canvas, params); +}; +CaretSelection.prototype = Object.create(Selection.prototype); +$.extend(CaretSelection.prototype, { + toDocumentFragment: function() { + var doc = this.canvas.wlxmlDocument; + return doc.createFragment(doc.CaretFragment, {node: this.element.wlxmlNode, offset: this.offset}); + } +}); + +var TextSelection = function(canvas, params) { + Selection.call(this, canvas, params); +}; +TextSelection.prototype = Object.create(Selection.prototype); +$.extend(TextSelection.prototype, { + toDocumentFragment: function() { + var doc = this.canvas.wlxmlDocument, + anchorNode = this.anchorElement ? this.anchorElement.wlxmlNode : null, + focusNode = this.focusElement ? this.focusElement.wlxmlNode : null; + + if(!anchorNode || !focusNode) { + return; + } + + if(anchorNode.isSiblingOf(focusNode)) { + return doc.createFragment(doc.TextRangeFragment, { + node1: anchorNode, + offset1: this.anchorOffset, + node2: focusNode, + offset2: this.focusOffset, + }); + } + else { + var siblingParents = doc.getSiblingParents({node1: anchorNode, node2: focusNode}); + return doc.createFragment(doc.RangeFragment, { + node1: siblingParents.node1, + node2: siblingParents.node2 + }); + } + } +}); + +var NodeSelection = function(canvas, params) { + Selection.call(this, canvas, params); +}; +NodeSelection.prototype = Object.create(Selection.prototype); +$.extend(NodeSelection.prototype, { + toDocumentFragment: function() { + var doc = this.canvas.wlxmlDocument; + doc.createFragment(doc.NodeFragment, {node: this.element.wlxmlNode}); + } +}); + + +var isText = function(node) { + /* globals Node */ + return node && node.nodeType === Node.TEXT_NODE && $(node.parentNode).is('[document-text-element]'); +}; + +var types = { + caret: CaretSelection, + textSelection: TextSelection, + nodeSelection: NodeSelection +}; + +return { + fromParams: function(canvas, params) { + return new types[params.type](canvas, params); + }, + fromNativeSelection: function(canvas) { + /* globals window */ + var nativeSelection = window.getSelection(), + params = {}, + element; + if(nativeSelection.focusNode) { + if(nativeSelection.isCollapsed && isText(nativeSelection.focusNode)) { + params = { + type: 'caret', + element: canvas.getDocumentElement(nativeSelection.focusNode), + offset: nativeSelection.focusOffset + }; + } else if(isText(nativeSelection.focusNode) && isText(nativeSelection.anchorNode)) { + params = { + type: 'textSelection', + anchorElement: canvas.getDocumentElement(nativeSelection.anchorNode), + anchorOffset: nativeSelection.anchorOffset, + focusElement: canvas.getDocumentElement(nativeSelection.focusNode), + focusOffset: nativeSelection.focusOffset + }; + } + } else if((element = canvas.getCurrentNodeElement())) { + params = { + type: 'nodeSelection', + element: element + }; + } + if(params.type) { + return this.fromParams(canvas, params); + } + } +}; + +}); \ No newline at end of file