editor: plugins/core - restore selection after editing/deleting link via a link tool box

[fnpeditor.git] / src / editor / modules / documentCanvas / canvas / canvas.js

diff --git a/src/editor/modules/documentCanvas/canvas/canvas.js b/src/editor/modules/documentCanvas/canvas/canvas.js
index 476a95b..a057e05 100644 (file)
--- a/src/editor/modules/documentCanvas/canvas/canvas.js
+++ b/src/editor/modules/documentCanvas/canvas/canvas.js
@@ -6,11 +6,13 @@ define([
 'modules/documentCanvas/canvas/documentElement',
 'modules/documentCanvas/canvas/keyboard',
 'modules/documentCanvas/canvas/utils',
 'modules/documentCanvas/canvas/documentElement',
 'modules/documentCanvas/canvas/keyboard',
 'modules/documentCanvas/canvas/utils',

-'modules/documentCanvas/canvas/wlxmlListener'
-], function($, _, Backbone, logging, documentElement, keyboard, utils, wlxmlListener) {
+'modules/documentCanvas/canvas/wlxmlListener',
+'modules/documentCanvas/canvas/elementsRegister',
+'modules/documentCanvas/canvas/genericElement',
+], function($, _, Backbone, logging, documentElement, keyboard, utils, wlxmlListener, ElementsRegister, genericElement) {

     
 'use strict';
     
 'use strict';

-/* global document:false, window:false, Node:false */
+/* global document:false, window:false, Node:false, gettext */

 
 var logger = logging.getLogger('canvas');
 
 
 var logger = logging.getLogger('canvas');
 


@@ -42,24 +44,42 @@ $.extend(TextHandler.prototype, {
     },
     setText: function(text, node) {
         //this.canvas.wlxmlDocument.transform('setText', {node:node, text: text});
     },
     setText: function(text, node) {
         //this.canvas.wlxmlDocument.transform('setText', {node:node, text: text});

-        node.setText(text);
+        node.document.transaction(function() {
+            node.setText(text);
+        }, {
+            metadata:{
+                description: gettext('Changing text')
+            }
+        });

 
     }
 
 });
 
 
 
     }
 
 });
 
 

-var Canvas = function(wlxmlDocument, publisher) {
+var Canvas = function(wlxmlDocument, elements) {
+    this.elementsRegister = new ElementsRegister(documentElement.DocumentNodeElement);
+
+    elements = [
+        {tag: 'section', klass: null, prototype: genericElement},
+        {tag: 'div', klass: null, prototype: genericElement},
+        {tag: 'header', klass: null, prototype: genericElement},
+        {tag: 'span', klass: null, prototype: genericElement},
+        {tag: 'aside', klass: null, prototype: genericElement}
+    ].concat(elements || []);
+
+    (elements).forEach(function(elementDesc) {
+        this.elementsRegister.register(elementDesc);
+    }.bind(this));

     this.eventBus = _.extend({}, Backbone.Events);
     this.wrapper = $('<div>').addClass('canvas-wrapper').attr('contenteditable', true);
     this.wlxmlListener = wlxmlListener.create(this);
     this.loadWlxmlDocument(wlxmlDocument);
     this.setupEventHandling();
     this.eventBus = _.extend({}, Backbone.Events);
     this.wrapper = $('<div>').addClass('canvas-wrapper').attr('contenteditable', true);
     this.wlxmlListener = wlxmlListener.create(this);
     this.loadWlxmlDocument(wlxmlDocument);
     this.setupEventHandling();

-    this.publisher = publisher ? publisher : function() {};

     this.textHandler = new TextHandler(this);
 };
 
     this.textHandler = new TextHandler(this);
 };
 

-$.extend(Canvas.prototype, {
+$.extend(Canvas.prototype, Backbone.Events, {

 
     loadWlxmlDocument: function(wlxmlDocument) {
         if(!wlxmlDocument) {
 
     loadWlxmlDocument: function(wlxmlDocument) {
         if(!wlxmlDocument) {


@@ -72,7 +92,12 @@ $.extend(Canvas.prototype, {
     },
 
     createElement: function(wlxmlNode) {
     },
 
     createElement: function(wlxmlNode) {

-        var Factory = wlxmlNode.nodeType === Node.TEXT_NODE ? documentElement.DocumentTextElement : documentElement.DocumentNodeElement;
+        var Factory;
+        if(wlxmlNode.nodeType === Node.TEXT_NODE) {
+            Factory = documentElement.DocumentTextElement;
+        } else {
+            Factory = this.elementsRegister.getElement({tag: wlxmlNode.getTagName(), klass: wlxmlNode.getClass()});
+        }

         return new Factory(wlxmlNode, this);
     },
 
         return new Factory(wlxmlNode, this);
     },
 


@@ -97,25 +122,21 @@ $.extend(Canvas.prototype, {
     },
 
     reloadRoot: function() {
     },
 
     reloadRoot: function() {

-        var canvasDOM = this.generateCanvasDOM(this.wlxmlDocument.root);
-        //var canvasDOM = this.wlxmlDocument.root.getData('canvasElement') ? this.wlxmlDocument.root.getData('canvasElement').dom() : this.generateCanvasDOM(this.wlxmlDocument.root);
-
+        this.rootElement = this.createElement(this.wlxmlDocument.root);

         this.wrapper.empty();
         this.wrapper.empty();

-        this.wrapper.append(canvasDOM);
-        this.d = this.wrapper.children(0);
-    },
-
-    generateCanvasDOM: function(wlxmlNode) {
-        //var element = new documentElement.DocumentNodeElement(wlxmlNode, this);
-        //return element.dom();
-        return this.createElement(wlxmlNode).dom();
+        this.wrapper.append(this.rootElement.dom);

     },
 
     setupEventHandling: function() {
         var canvas = this;
     },
 
     setupEventHandling: function() {
         var canvas = this;

+

         this.wrapper.on('keyup keydown keypress', function(e) {
         this.wrapper.on('keyup keydown keypress', function(e) {

-            keyboard.handleKey(e, this);
-        }.bind(this));
+            keyboard.handleKey(e, canvas);
+        });
+
+        this.wrapper.on('mouseup', function() {
+            canvas.triggerSelectionChanged();
+        });

 
         var mouseDown;
         this.wrapper.on('mousedown', '[document-node-element], [document-text-element]', function(e) {
 
         var mouseDown;
         this.wrapper.on('mousedown', '[document-node-element], [document-text-element]', function(e) {


@@ -212,7 +233,7 @@ $.extend(Canvas.prototype, {
 
         this.eventBus.on('elementToggled', function(toggle, element) {
             if(!toggle) {
 
         this.eventBus.on('elementToggled', function(toggle, element) {
             if(!toggle) {

-                canvas.setCurrentElement(element.getPreviousTextElement());
+                canvas.setCurrentElement(canvas.getPreviousTextElement(element));

             }
         });
     },
             }
         });
     },


@@ -222,14 +243,11 @@ $.extend(Canvas.prototype, {
     },
 
     doc: function() {
     },
 
     doc: function() {

-        if(this.d === null) {
-            return null;
-        }
-        return this.getDocumentElement(this.d[0]);
+        return this.rootElement;

     },
 
     toggleElementHighlight: function(node, toggle) {
     },
 
     toggleElementHighlight: function(node, toggle) {

-        var element = utils.findCanvasElement(node);
+        var element = utils.getElementForNode(node);

         element.toggleHighlight(toggle);
     },
 
         element.toggleHighlight(toggle);
     },
 


@@ -252,13 +270,66 @@ $.extend(Canvas.prototype, {
         }
     },
 
         }
     },
 

+    getPreviousTextElement: function(relativeToElement, includeInvisible) {
+        return this.getNearestTextElement('above', relativeToElement, includeInvisible);
+    },
+
+    getNextTextElement: function(relativeToElement, includeInvisible) {
+        return this.getNearestTextElement('below', relativeToElement, includeInvisible);
+    },
+
+    getNearestTextElement: function(direction, relativeToElement, includeInvisible) {
+        includeInvisible = includeInvisible !== undefined ? includeInvisible : false;
+        var selector = '[document-text-element]' + (includeInvisible ? '' : ':visible');
+        return this.getDocumentElement(utils.nearestInDocumentOrder(selector, direction, relativeToElement.dom[0]));
+    },
+

     contains: function(element) {
     contains: function(element) {

-        return element.dom().parents().index(this.wrapper) !== -1;
+        return element.dom.parents().index(this.wrapper) !== -1;
+    },
+
+    triggerSelectionChanged: function() {
+        this.trigger('selectionChanged', this.getSelection());
+        var s = this.getSelection(),
+            f = s.toDocumentFragment();
+        if(f && f instanceof f.RangeFragment) {
+                var $current = this.wrapper.find('.current-node-element');
+                var current = $current && this.getDocumentElement($current.parent()[0]);
+                
+                if($current) {
+                    $current.removeClass('current-node-element');
+                }
+                if(current) {
+                    current.markAsCurrent(false);
+                }
+        }
+    },
+
+    getSelection: function() {
+        return new Selection(this);
+    },
+
+    select: function(fragment) {
+        if(fragment instanceof this.wlxmlDocument.RangeFragment) {
+            this.setCurrentElement(fragment.endNode, {caretTo: fragment.endOffset});
+        } else if(fragment instanceof this.wlxmlDocument.NodeFragment) {
+            var params = {
+                caretTo: fragment instanceof this.wlxmlDocument.CaretFragment ? fragment.offset : 'start'
+            };
+            this.setCurrentElement(fragment.node, params);
+        } else {
+            logger.debug('Fragment not supported');
+        }

     },
 
     setCurrentElement: function(element, params) {
     },
 
     setCurrentElement: function(element, params) {

+        if(!element) {
+            logger.debug('Invalid element passed to setCurrentElement: ' + element);
+            return;
+        }
+

         if(!(element instanceof documentElement.DocumentElement)) {
         if(!(element instanceof documentElement.DocumentElement)) {

-            element = utils.findCanvasElement(element);
+            element = utils.getElementForNode(element);

         }
 
         if(!element || !this.contains(element)) {
         }
 
         if(!element || !this.contains(element)) {


@@ -272,21 +343,22 @@ $.extend(Canvas.prototype, {
             if(byBrowser && byBrowser.parent().sameNode(nodeToLand)) {
                 return byBrowser;
             }
             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;
+            return e.getVerticallyFirstTextElement();

         }.bind(this);
         var _markAsCurrent = function(element) {
             if(element instanceof documentElement.DocumentTextElement) {
                 this.wrapper.find('.current-text-element').removeClass('current-text-element');
         }.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');
+                element.dom.addClass('current-text-element');

             } else {
             } else {

-                this.wrapper.find('.current-node-element').removeClass('current-node-element');
+                var $current = this.wrapper.find('.current-node-element');
+                var current = this.getDocumentElement($current.parent()[0]);
+                $current.removeClass('current-node-element');
+
+                if(current) {
+                    current.markAsCurrent(false);
+                }

                 element._container().addClass('current-node-element');
                 element._container().addClass('current-node-element');

+                element.markAsCurrent(true);

             }
         }.bind(this);
 
             }
         }.bind(this);
 


@@ -306,28 +378,24 @@ $.extend(Canvas.prototype, {
             if(params.caretTo || !textElementToLand.sameNode(this.getCursor().getPosition().element)) {
                 this._moveCaretToTextElement(textElementToLand, params.caretTo); // as method on element?
             }
             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.wlxmlNode);
-            }

         } else {
             document.getSelection().removeAllRanges();
         }
 
         if(!(currentNodeElement && currentNodeElement.sameNode(nodeElementToLand))) {
             _markAsCurrent(nodeElementToLand);
         } else {
             document.getSelection().removeAllRanges();
         }
 
         if(!(currentNodeElement && currentNodeElement.sameNode(nodeElementToLand))) {
             _markAsCurrent(nodeElementToLand);

-
-            this.publisher('currentNodeElementSet', nodeElementToLand.wlxmlNode);

         }
         }

+        this.triggerSelectionChanged();

     },
 
     _moveCaretToTextElement: function(element, where) {
         var range = document.createRange(),
     },
 
     _moveCaretToTextElement: function(element, where) {
         var range = document.createRange(),

-            node = element.dom().contents()[0];
+            node = element.dom.contents()[0];

 
         if(typeof where !== 'number') {
             range.selectNodeContents(node);
         } else {
 
         if(typeof where !== 'number') {
             range.selectNodeContents(node);
         } else {

-            range.setStart(node, where);
+            range.setStart(node, Math.min(node.data.length, where));

         }
         
         if(where !== 'whole') {
         }
         
         if(where !== 'whole') {


@@ -348,15 +416,99 @@ $.extend(Canvas.prototype, {
         if(position.element) {
             this._moveCaretToTextElement(position.element, position.offset);
         }
         if(position.element) {
             this._moveCaretToTextElement(position.element, position.offset);
         }

+    },
+
+    toggleGrid: function() {
+        this.wrapper.toggleClass('grid-on');
+        this.trigger('changed');
+    },
+    isGridToggled: function() {
+        return this.wrapper.hasClass('grid-on');

     }
 });
 
 
     }
 });
 
 

+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.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;
 var Cursor = function(canvas) {
     this.canvas = canvas;

+    this.selection = window.getSelection();

 };
 
 $.extend(Cursor.prototype, {
 };
 
 $.extend(Cursor.prototype, {

+    sameAs: function(other) {
+        var same = true;
+        if(!other) {
+            return false;
+        }
+
+        ['focusNode', 'focusOffset', 'anchorNode', 'anchorOffset'].some(function(prop) {
+            same = same && this.selection[prop] === other.selection[prop];
+            if(!same) {
+                return true; // break
+            }
+        }.bind(this));
+
+        return same;
+    },

     isSelecting: function() {
         var selection = window.getSelection();
         return !selection.isCollapsed;
     isSelecting: function() {
         var selection = window.getSelection();
         return !selection.isCollapsed;


@@ -443,7 +595,7 @@ $.extend(Cursor.prototype, {
             if(selection.anchorNode === selection.focusNode) {
                 anchorFirst = selection.anchorOffset <= selection.focusOffset;
             } else {
             if(selection.anchorNode === selection.focusNode) {
                 anchorFirst = selection.anchorOffset <= selection.focusOffset;
             } else {

-                anchorFirst = parent.childIndex(anchorElement) < parent.childIndex(focusElement);
+                anchorFirst = (parent.getFirst(anchorElement, focusElement) === anchorElement);

             }
             placeData = getPlaceData(anchorFirst);
         } else {
             }
             placeData = getPlaceData(anchorFirst);
         } else {


@@ -463,8 +615,8 @@ $.extend(Cursor.prototype, {
 });
 
 return {
 });
 
 return {

-    fromXMLDocument: function(wlxmlDocument, publisher) {
-        return new Canvas(wlxmlDocument, publisher);
+    fromXMLDocument: function(wlxmlDocument, elements) {
+        return new Canvas(wlxmlDocument, elements);

     }
 };
 
     }
 };