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editor: Better invalid cursor handling
[fnpeditor.git] / src / editor / modules / documentCanvas / canvas / documentElement.js
diff --git a/src/editor/modules/documentCanvas/canvas/documentElement.js b/src/editor/modules/documentCanvas/canvas/documentElement.js
index 4951e6c..27160e7 100644 (file)
--- a/src/editor/modules/documentCanvas/canvas/documentElement.js
+++ b/src/editor/modules/documentCanvas/canvas/documentElement.js
@@ -2,66 +2,34 @@ define([
 'libs/jquery',
 'libs/underscore',
 'modules/documentCanvas/canvas/utils',
 'libs/jquery',
 'libs/underscore',
 'modules/documentCanvas/canvas/utils',
-'modules/documentCanvas/canvas/widgets',
 'modules/documentCanvas/canvas/wlxmlManagers'
 'modules/documentCanvas/canvas/wlxmlManagers'
-], function($, _, utils, widgets, wlxmlManagers) {
+], function($, _, utils, wlxmlManagers) {
     
 'use strict';
     
 'use strict';
+/* global Node:false, document:false */
 
 
 // DocumentElement represents a text or an element node from WLXML document rendered inside Canvas
 
 
 // DocumentElement represents a text or an element node from WLXML document rendered inside Canvas
-var DocumentElement = function(htmlElement, canvas) {
-    if(arguments.length === 0)
-        return;
+var DocumentElement = function(wlxmlNode, canvas) {
+    this.wlxmlNode = wlxmlNode;
     this.canvas = canvas;
     this.canvas = canvas;
-    this._setupDOMHandler(htmlElement);
-}
 
 
-
-var elementTypeFromWlxmlNode = function(wlxmlNode) {
-    return wlxmlNode.nodeType === Node.TEXT_NODE ? DocumentTextElement : DocumentNodeElement;
-}
-
-$.extend(DocumentElement, {
-    create: function(node, canvas) {
-        return elementTypeFromWlxmlNode(node).create(node, canvas);
-    },
-
-    createDOM: function(wlxmlNode) {
-        return elementTypeFromParams(wlxmlNode).createDOM(params);
-    },
-
-    fromHTMLElement: function(htmlElement, canvas) {
-        var $element = $(htmlElement);
-        if(htmlElement.nodeType === Node.ELEMENT_NODE && $element.attr('document-node-element') !== undefined)
-            return DocumentNodeElement.fromHTMLElement(htmlElement, canvas);
-        if($element.attr('document-text-element') !== undefined || (htmlElement.nodeType === Node.TEXT_NODE && $element.parent().attr('document-text-element') !== undefined))
-            return DocumentTextElement.fromHTMLElement(htmlElement, canvas);
-        return undefined;
-    }
-});
+    this.$element = this.createDOM();
+    this.$element.data('canvas-element', this);
+};
 
 $.extend(DocumentElement.prototype, {
 
 $.extend(DocumentElement.prototype, {
-    _setupDOMHandler: function(htmlElement) {
-        this.$element = $(htmlElement);
-    },
     bound: function() {
         return $.contains(document.documentElement, this.dom()[0]);
     },
     dom: function() {
         return this.$element;
     },
     bound: function() {
         return $.contains(document.documentElement, this.dom()[0]);
     },
     dom: function() {
         return this.$element;
     },
-    data: function() {
-        var dom = this.dom(),
-            args = Array.prototype.slice.call(arguments, 0);
-        if(args.length === 2 && args[1] === undefined)
-            return dom.removeData(args[0]);
-        return dom.data.apply(dom, arguments);
-    },
     parent: function() {
         var parents = this.$element.parents('[document-node-element]');
     parent: function() {
         var parents = this.$element.parents('[document-node-element]');
-        if(parents.length)
-            return DocumentElement.fromHTMLElement(parents[0], this.canvas);
+        if(parents.length) {
+            return this.canvas.getDocumentElement(parents[0]);
+        }
         return null;
     },
 
         return null;
     },
 
@@ -79,29 +47,17 @@ $.extend(DocumentElement.prototype, {
         return other && (typeof other === typeof this) && other.dom()[0] === this.dom()[0];
     },
 
         return other && (typeof other === typeof this) && other.dom()[0] === this.dom()[0];
     },
 
-    wrapWithNodeElement: function(wlxmlNode) {
-        var wrapper = DocumentNodeElement.create({tag: wlxmlNode.tag, klass: wlxmlNode.klass}, this);
-        this.dom().replaceWith(wrapper.dom());
-        wrapper.append(this);
-        return wrapper;
-    },
-
-    markAsCurrent: function() {
-        this.canvas.markAsCurrent(this);
-    },
-
     getVerticallyFirstTextElement: function() {
         var toret;
         this.children().some(function(child) {
     getVerticallyFirstTextElement: function() {
         var toret;
         this.children().some(function(child) {
-            if(!child.isVisible())
-                return false; // continue
             if(child instanceof DocumentTextElement) {
                 toret = child;
                 return true; // break
             } else {
                 toret = child.getVerticallyFirstTextElement();
             if(child instanceof DocumentTextElement) {
                 toret = child;
                 return true; // break
             } else {
                 toret = child.getVerticallyFirstTextElement();
-                if(toret)
+                if(toret) {
                     return true; // break
                     return true; // break
+                }
             }
         });
         return toret;
             }
         });
         return toret;
@@ -121,39 +77,38 @@ $.extend(DocumentElement.prototype, {
         return this.canvas.getDocumentElement(utils.nearestInDocumentOrder(selector, direction, this.dom()[0]));
     },
 
         return this.canvas.getDocumentElement(utils.nearestInDocumentOrder(selector, direction, this.dom()[0]));
     },
 
-    isVisible: function() {
-        return this instanceof DocumentTextElement || this.getWlxmlTag() !== 'metadata';
-    },
-
-    isInsideList: function() {
-        return this.parents().some(function(parent) {
-            return parent.is('list');
-        });
-    },
-
     exec: function(method) {
     exec: function(method) {
-        var manager = this.data('_wlxmlManager');
-        if(manager[method])
-            return manager[method].apply(manager, Array.prototype.slice.call(arguments, 1));
+        if(this.manager && this.manager[method]) {
+            return this.manager[method].apply(this.manager, Array.prototype.slice.call(arguments, 1));
+        }
     }
 });
 
 
 // DocumentNodeElement represents an element node from WLXML document rendered inside Canvas
     }
 });
 
 
 // DocumentNodeElement represents an element node from WLXML document rendered inside Canvas
-var DocumentNodeElement = function(htmlElement, canvas) {
-    DocumentElement.call(this, htmlElement, canvas);
+var DocumentNodeElement = function(wlxmlNode, canvas) {
+    DocumentElement.call(this, wlxmlNode, canvas);
+    wlxmlNode.setData('canvasElement', this);
 };
 
 };
 
-$.extend(DocumentNodeElement, {
-    create: function(wlxmlNode, canvas) {
-        return this.fromHTMLElement(this.createDOM(wlxmlNode, canvas)[0], canvas);
-    },
 
 
-    fromHTMLElement: function(htmlElement, canvas) {
-        return new this(htmlElement, canvas);
-    },
+var manipulate = function(e, params, action) {
+    var element;
+    if(params instanceof DocumentElement) {
+        element = params;
+    } else {
+        element = e.canvas.createElement(params);
+    }
+    var target = (action === 'append' || action === 'prepend') ? e._container() : e.dom();
+    target[action](element.dom());
+    return element;
+};
+
+DocumentNodeElement.prototype = Object.create(DocumentElement.prototype);
 
 
-    createDOM: function(wlxmlNode, canvas) {
+
+$.extend(DocumentNodeElement.prototype, {
+    createDOM: function() {
         var dom = $('<div>')
                 .attr('document-node-element', ''),
             widgetsContainer = $('<div>')
         var dom = $('<div>')
                 .attr('document-node-element', ''),
             widgetsContainer = $('<div>')
@@ -165,106 +120,25 @@ $.extend(DocumentNodeElement, {
         dom.append(widgetsContainer, container);
         // Make sure widgets aren't navigable with arrow keys
         widgetsContainer.find('*').add(widgetsContainer).attr('tabindex', -1);
         dom.append(widgetsContainer, container);
         // Make sure widgets aren't navigable with arrow keys
         widgetsContainer.find('*').add(widgetsContainer).attr('tabindex', -1);
+        this.$element = dom; //@!!!
 
 
-        var element = this.fromHTMLElement(dom[0], canvas);
-
-        element.data('wlxmlNode', wlxmlNode);
-        wlxmlNode.setData('canvasElement', element);
-
-        element.setWlxml({tag: wlxmlNode.getTagName(), klass: wlxmlNode.getClass()});
-
-        wlxmlNode.contents().forEach((function(node) {
-            container.append(DocumentElement.create(node).dom());
-        }).bind(this));
+        this.setWlxmlTag(this.wlxmlNode.getTagName());
+        this.setWlxmlClass(this.wlxmlNode.getClass());
 
 
+        this.wlxmlNode.contents().forEach(function(node) {
+            container.append(this.canvas.createElement(node).dom());
+        }.bind(this));
         return dom;
         return dom;
-    }
-
-});
-
-var manipulate = function(e, params, action) {
-    var element;
-    if(params instanceof DocumentElement) {
-        element = params;
-    } else {
-        element = DocumentElement.create(params);
-    }
-    var target = (action === 'append' || action === 'prepend') ? e._container() : e.dom();
-    target[action](element.dom());
-    return element;
-};
-
-DocumentNodeElement.prototype = new DocumentElement();
-
-
-$.extend(DocumentNodeElement.prototype, {
+    },
     _container: function() {
         return this.dom().children('[document-element-content]');
     },
     detach: function() {
     _container: function() {
         return this.dom().children('[document-element-content]');
     },
     detach: function() {
-        var parent = this.parent();
-        if(!parent)
-            return;
-
-        var parentChildren = parent.children(),
-            myIdx = parent.childIndex(this);
-
-        if(myIdx > 0 && myIdx < parentChildren.length) {
-            if((parentChildren[myIdx-1] instanceof DocumentTextElement) && (parentChildren[myIdx+1] instanceof DocumentTextElement)) {
-                parentChildren[myIdx-1].appendText(parentChildren[myIdx+1].getText());
-                parentChildren[myIdx+1].detach();
-            }
-        }
         this.dom().detach();
         this.canvas = null;
         return this;
     },
         this.dom().detach();
         this.canvas = null;
         return this;
     },
-    unwrapContents: function() {
-        var parent = this.parent();
-        if(!parent)
-            return;
-
-        var parentChildren = parent.children(),
-            myChildren = this.children(),
-            myIdx = parent.childIndex(this);
-
-        if(myChildren.length === 0)
-            return this.detach();
-
-        var moveLeftRange, moveRightRange, leftMerged;
-
-        if(myIdx > 0 && (parentChildren[myIdx-1] instanceof DocumentTextElement) && (myChildren[0] instanceof DocumentTextElement)) {
-            parentChildren[myIdx-1].appendText(myChildren[0].getText());
-            myChildren[0].detach();
-            moveLeftRange = true;
-            leftMerged = true;
-        } else {
-            leftMerged = false;
-        }
-
-        if(!(leftMerged && myChildren.length === 1)) {
-            if(myIdx < parentChildren.length - 1 && (parentChildren[myIdx+1] instanceof DocumentTextElement) && (myChildren[myChildren.length-1] instanceof DocumentTextElement)) {
-                parentChildren[myIdx+1].prependText(myChildren[myChildren.length-1].getText());
-                myChildren[myChildren.length-1].detach();
-                moveRightRange = true;
-            }
-        }
-
-        var childrenLength = this.children().length;
-        this.children().forEach(function(child) {
-            this.before(child);
-        }.bind(this));
-
-        this.detach();
-
-        return {
-            element1: parent.children()[myIdx + (moveLeftRange ? -1 : 0)],
-            element2: parent.children()[myIdx + childrenLength-1 + (moveRightRange ? 1 : 0)]
-        };
-    },
     append: function(params) {
     append: function(params) {
-        if(params.tag !== 'span')
-            this.data('orig-end', undefined);
         return manipulate(this, params, 'append');
     },
     prepend: function(params) {
         return manipulate(this, params, 'append');
     },
     prepend: function(params) {
@@ -279,21 +153,17 @@ $.extend(DocumentNodeElement.prototype, {
     },
     children: function() {
         var toret = [];
     },
     children: function() {
         var toret = [];
-        if(this instanceof DocumentTextElement)
+        if(this instanceof DocumentTextElement) {
             return toret;
             return toret;
+        }
 
 
         var elementContent = this._container().contents();
         var element = this;
 
 
         var elementContent = this._container().contents();
         var element = this;
-        elementContent.each(function(idx) {
-            var childElement = DocumentElement.fromHTMLElement(this, element.canvas);
-            if(childElement === undefined)
-                return true;
-            if(idx === 0 && elementContent.length > 1 && elementContent[1].nodeType === Node.ELEMENT_NODE && (childElement instanceof DocumentTextElement) && $.trim($(this).text()) === '')
+        elementContent.each(function() {
+            var childElement = element.canvas.getDocumentElement(this);
+            if(childElement === undefined) {
                 return true;
                 return true;
-            if(idx > 0 && childElement instanceof DocumentTextElement) {
-                if(toret[toret.length-1] instanceof DocumentNodeElement && $.trim($(this).text()) === '')
-                    return true;
             }
             toret.push(childElement);
         });
             }
             toret.push(childElement);
         });
@@ -314,47 +184,27 @@ $.extend(DocumentNodeElement.prototype, {
         return this._container().attr('wlxml-tag');
     },
     setWlxmlTag: function(tag) {
         return this._container().attr('wlxml-tag');
     },
     setWlxmlTag: function(tag) {
-        if(tag === this.getWlxmlTag())
-            return;
-
         this._container().attr('wlxml-tag', tag);
         this._container().attr('wlxml-tag', tag);
-        if(!this.__updatingWlxml)
-            this._updateWlxmlManager();
     },
     getWlxmlClass: function() {
         var klass = this._container().attr('wlxml-class');
     },
     getWlxmlClass: function() {
         var klass = this._container().attr('wlxml-class');
-        if(klass)
+        if(klass) {
             return klass.replace(/-/g, '.');
             return klass.replace(/-/g, '.');
+        }
         return undefined;
     },
     setWlxmlClass: function(klass) {
         return undefined;
     },
     setWlxmlClass: function(klass) {
-        if(klass === this.getWlxmlClass())
+        if(klass === this.getWlxmlClass()) {
             return;
             return;
-        if(klass)
+        }
+        if(klass) {
             this._container().attr('wlxml-class', klass.replace(/\./g, '-'));
             this._container().attr('wlxml-class', klass.replace(/\./g, '-'));
-        else
+        }
+        else {
             this._container().removeAttr('wlxml-class');
             this._container().removeAttr('wlxml-class');
-        if(!this.__updatingWlxml)
-            this._updateWlxmlManager();
-    },
-    setWlxml: function(params) {
-        this.__updatingWlxml = true;
-        if(params.tag !== undefined)
-            this.setWlxmlTag(params.tag);
-        if(params.klass !== undefined)
-            this.setWlxmlClass(params.klass);
-        this._updateWlxmlManager();
-        this.__updatingWlxml = false;
-    },
-    _updateWlxmlManager: function() {
-        var manager = wlxmlManagers.getFor(this);
-        this.data('_wlxmlManager', manager);
-        manager.setup();
-    },
-    is: function(what) {
-        if(what === 'list' && _.contains(['list.items', 'list.items.enum'], this.getWlxmlClass()))
-            return true;
-        return false;
+        }
+        this.manager = wlxmlManagers.getFor(this);
+        this.manager.setup();
     },
     toggleLabel: function(toggle) {
         var displayCss = toggle ? 'inline-block' : 'none';
     },
     toggleLabel: function(toggle) {
         var displayCss = toggle ? 'inline-block' : 'none';
@@ -368,50 +218,31 @@ $.extend(DocumentNodeElement.prototype, {
     },
 
     toggle: function(toggle) {
     },
 
     toggle: function(toggle) {
-        var mng = this.data('_wlxmlManager');
-        if(mng) {
-            mng.toggle(toggle);
+        if(this.manager) {
+            this.manager.toggle(toggle);
         }
     }
 });
 
 
 // DocumentNodeElement represents a text node from WLXML document rendered inside Canvas
         }
     }
 });
 
 
 // DocumentNodeElement represents a text node from WLXML document rendered inside Canvas
-var DocumentTextElement = function(htmlElement, canvas) {
-    DocumentElement.call(this, htmlElement, canvas);
+var DocumentTextElement = function(wlxmlTextNode, canvas) {
+    DocumentElement.call(this, wlxmlTextNode, canvas);
 };
 
 $.extend(DocumentTextElement, {
 };
 
 $.extend(DocumentTextElement, {
-    createDOM: function(wlxmlTextNode) {
-        var dom = $('<div>')
-            .attr('document-text-element', '')
-            .text(wlxmlTextNode.getText() || utils.unicode.ZWS),
-        element = this.fromHTMLElement(dom[0], this);
-        element.data('wlxmlNode', wlxmlTextNode);
-        return dom;
-    },
-
-    create: function(wlxmlTextNode, canvas) {
-        return this.fromHTMLElement(this.createDOM(wlxmlTextNode)[0]);
-    },
-
-    fromHTMLElement: function(htmlElement, canvas) {
-        return new this(htmlElement, canvas);
-    },
     isContentContainer: function(htmlElement) {
         return htmlElement.nodeType === Node.TEXT_NODE && $(htmlElement).parent().is('[document-text-element]');
     }
 });
 
     isContentContainer: function(htmlElement) {
         return htmlElement.nodeType === Node.TEXT_NODE && $(htmlElement).parent().is('[document-text-element]');
     }
 });
 
-DocumentTextElement.prototype = new DocumentElement();
+DocumentTextElement.prototype = Object.create(DocumentElement.prototype);
 
 $.extend(DocumentTextElement.prototype, {
 
 $.extend(DocumentTextElement.prototype, {
-    _setupDOMHandler: function(htmlElement) {
-        var $element = $(htmlElement);
-        if(htmlElement.nodeType === Node.TEXT_NODE)
-            this.$element = $element.parent();
-        else
-            this.$element = $element;
+    createDOM: function() {
+        return $('<div>')
+            .attr('document-text-element', '')
+            .text(this.wlxmlNode.getText() || utils.unicode.ZWS);
     },
     detach: function() {
         this.dom().detach();
     },
     detach: function() {
         this.dom().detach();
@@ -421,12 +252,6 @@ $.extend(DocumentTextElement.prototype, {
     setText: function(text) {
         this.dom().contents()[0].data = text;
     },
     setText: function(text) {
         this.dom().contents()[0].data = text;
     },
-    appendText: function(text) {
-        this.dom().contents()[0].data += text;
-    },
-    prependText: function(text) {
-        this.dom().contents()[0].data = text + this.dom().contents()[0].data;
-    },
     getText: function(options) {
         options = _.extend({raw: false}, options || {});
         var toret = this.dom().text();
     getText: function(options) {
         options = _.extend({raw: false}, options || {});
         var toret = this.dom().text();
@@ -440,13 +265,14 @@ $.extend(DocumentTextElement.prototype, {
         return this.dom().contents()[0].data === utils.unicode.ZWS;
     },
     after: function(params) {
         return this.dom().contents()[0].data === utils.unicode.ZWS;
     },
     after: function(params) {
-        if(params instanceof DocumentTextElement || params.text)
+        if(params instanceof DocumentTextElement || params.text) {
             return false;
             return false;
+        }
         var element;
         if(params instanceof DocumentNodeElement) {
             element = params;
         } else {
         var element;
         if(params instanceof DocumentNodeElement) {
             element = params;
         } else {
-            element = DocumentNodeElement.create(params, this.canvas);
+            element = this.canvas.createElement(params);
         }
         this.dom().wrap('<div>');
         this.dom().parent().after(element.dom());
         }
         this.dom().wrap('<div>');
         this.dom().parent().after(element.dom());
@@ -454,115 +280,20 @@ $.extend(DocumentTextElement.prototype, {
         return element;
     },
     before: function(params) {
         return element;
     },
     before: function(params) {
-        if(params instanceof DocumentTextElement || params.text)
+        if(params instanceof DocumentTextElement || params.text) {
             return false;
             return false;
+        }
         var element;
         if(params instanceof DocumentNodeElement) {
             element = params;
         } else {
         var element;
         if(params instanceof DocumentNodeElement) {
             element = params;
         } else {
-            element = DocumentNodeElement.create(params, this.canvas);
+            element = this.canvas.createElement(params);
         }
         this.dom().wrap('<div>');
         this.dom().parent().before(element.dom());
         this.dom().unwrap();
         return element;
     },
         }
         this.dom().wrap('<div>');
         this.dom().parent().before(element.dom());
         this.dom().unwrap();
         return element;
     },
-    wrapWithNodeElement: function(wlxmlNode) {
-        if(typeof wlxmlNode.start === 'number' && typeof wlxmlNode.end === 'number') {
-            return this.canvas.wrapText({
-                inside: this.parent(),
-                textNodeIdx: this.parent().childIndex(this),
-                offsetStart: Math.min(wlxmlNode.start, wlxmlNode.end),
-                offsetEnd: Math.max(wlxmlNode.start, wlxmlNode.end),
-                _with: {tag: wlxmlNode.tag, klass: wlxmlNode.klass}
-            });
-        } else {
-            return DocumentElement.prototype.wrapWithNodeElement.call(this, wlxmlNode);
-        }
-    },
-    unwrap: function() {
-        var parent = this.parent(),
-            toret;
-        if(parent.children().length === 1) {
-            toret = parent.parent();
-            var grandParent = parent.parent();
-            if(grandParent) {
-                var grandParentChildren = grandParent.children(),
-                    idx = grandParent.childIndex(parent),
-                    prev = idx - 1 > -1 ? grandParentChildren[idx-1] : null,
-                    next = idx + 1 < grandParentChildren.length ? grandParentChildren[idx+1] : null;
-                
-                prev = (prev instanceof DocumentTextElement) ? prev : null;
-                next = (next instanceof DocumentTextElement) ? next : null;
-
-                if(prev && next) {
-                    prev.setText(prev.getText() + this.getText() + next.getText());
-                    next.detach();
-                } else if (prev || next) {
-                    var target = prev ? prev : next,
-                        newText = prev ? target.getText() + this.getText() : this.getText() + target.getText();
-                    target.setText(newText);
-                } else {
-                    parent.after(this);
-                }
-            } else {
-                parent.after(this);
-            }
-            parent.detach();
-            return toret;
-        }
-    },
-    split: function(params) {
-        var parentElement = this.parent(),
-            myIdx = parentElement.childIndex(this),
-            myCanvas = this.canvas,
-            passed = false,
-            succeedingChildren = [],
-            thisElement = this,
-            prefix = this.getText().substr(0, params.offset),
-            suffix = this.getText().substr(params.offset);
-
-        parentElement.children().forEach(function(child) {
-            if(passed)
-                succeedingChildren.push(child);
-            if(child.sameNode(thisElement))
-                passed = true;
-        });
-
-        if(prefix.length > 0)
-            this.setText(prefix);
-        else
-            this.detach();
-        
-        var newElement = DocumentNodeElement.create({tag: parentElement.getWlxmlTag(), klass: parentElement.getWlxmlClass()}, myCanvas);
-        parentElement.after(newElement);
-
-        if(suffix.length > 0)
-            newElement.append({text: suffix});
-        succeedingChildren.forEach(function(child) {
-            newElement.append(child);
-        });
-
-        return {first: parentElement, second: newElement};
-    },
-    divide: function(params) {
-        var myText = this.getText();
-
-        if(params.offset === myText.length)
-            return this.after(params);
-        if(params.offset === 0)
-            return this.before(params);
-
-        var lhsText = myText.substr(0, params.offset),
-            rhsText = myText.substr(params.offset),
-            newElement = DocumentNodeElement.create({tag: params.tag, klass: params.klass}, this.canvas),
-            rhsTextElement = DocumentTextElement.create({text: rhsText});
-
-        this.setText(lhsText);
-        this.after(newElement);
-        newElement.after(rhsTextElement);
-        return newElement;
-    },
 
     toggleHighlight: function() {
         // do nothing for now
 
     toggleHighlight: function() {
         // do nothing for now