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Fixing left/right arrow support in empty text element
[fnpeditor.git] / modules / documentCanvas / canvas / documentElement.js
diff --git a/modules/documentCanvas/canvas/documentElement.js b/modules/documentCanvas/canvas/documentElement.js
index 29b07df..0558a3e 100644 (file)
--- a/modules/documentCanvas/canvas/documentElement.js
+++ b/modules/documentCanvas/canvas/documentElement.js
@@ -1,8 +1,11 @@
 define([
 'libs/jquery-1.9.1.min',
 'libs/underscore-min',
 define([
 'libs/jquery-1.9.1.min',
 'libs/underscore-min',
-'modules/documentCanvas/classAttributes'
-], function($, _, classAttributes) {
+'modules/documentCanvas/classAttributes',
+'modules/documentCanvas/canvas/utils',
+'modules/documentCanvas/canvas/widgets',
+'modules/documentCanvas/canvas/wlxmlManagers'
+], function($, _, classAttributes, utils, widgets, wlxmlManagers) {
     
 'use strict';
 
     
 'use strict';
 
@@ -31,9 +34,9 @@ $.extend(DocumentElement, {
 
     fromHTMLElement: function(htmlElement, canvas) {
         var $element = $(htmlElement);
 
     fromHTMLElement: function(htmlElement, canvas) {
         var $element = $(htmlElement);
-        if(htmlElement.nodeType === Node.ELEMENT_NODE && $element.attr('wlxml-tag'))
+        if(htmlElement.nodeType === Node.ELEMENT_NODE && $element.attr('document-node-element') !== undefined)
             return DocumentNodeElement.fromHTMLElement(htmlElement, canvas);
             return DocumentNodeElement.fromHTMLElement(htmlElement, canvas);
-        if($element.attr('wlxml-text') !== undefined || (htmlElement.nodeType === Node.TEXT_NODE && $element.parent().attr('wlxml-text') !== undefined))
+        if($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;
     }
             return DocumentTextElement.fromHTMLElement(htmlElement, canvas);
         return undefined;
     }
@@ -43,11 +46,14 @@ $.extend(DocumentElement.prototype, {
     _setupDOMHandler: function(htmlElement) {
         this.$element = $(htmlElement);
     },
     _setupDOMHandler: function(htmlElement) {
         this.$element = $(htmlElement);
     },
+    bound: function() {
+        return this.canvas !== undefined;
+    },
     dom: function() {
         return this.$element;
     },
     parent: function() {
     dom: function() {
         return this.$element;
     },
     parent: function() {
-        var parents = this.$element.parents('[wlxml-tag]');
+        var parents = this.$element.parents('[document-node-element]');
         if(parents.length)
             return DocumentElement.fromHTMLElement(parents[0], this.canvas);
         return null;
         if(parents.length)
             return DocumentElement.fromHTMLElement(parents[0], this.canvas);
         return null;
@@ -68,17 +74,12 @@ $.extend(DocumentElement.prototype, {
     },
 
     wrapWithNodeElement: function(wlxmlNode) {
     },
 
     wrapWithNodeElement: function(wlxmlNode) {
-        var wrapper = DocumentNodeElement.create({tag: wlxmlNode.tag, klass: wlxmlNode.klass});
+        var wrapper = DocumentNodeElement.create({tag: wlxmlNode.tag, klass: wlxmlNode.klass}, this);
         this.dom().replaceWith(wrapper.dom());
         wrapper.append(this);
         return wrapper;
     },
 
         this.dom().replaceWith(wrapper.dom());
         wrapper.append(this);
         return wrapper;
     },
 
-    detach: function() {
-        this.dom().detach();
-        this.canvas = null;
-    },
-
     markAsCurrent: function() {
         this.canvas.markAsCurrent(this);
     },
     markAsCurrent: function() {
         this.canvas.markAsCurrent(this);
     },
@@ -102,6 +103,18 @@ $.extend(DocumentElement.prototype, {
 
     isVisible: function() {
         return this instanceof DocumentTextElement || this.getWlxmlTag() !== 'metadata';
 
     isVisible: function() {
         return this instanceof DocumentTextElement || this.getWlxmlTag() !== 'metadata';
+    },
+
+    isInsideList: function() {
+        return this.parents().some(function(parent) {
+            return parent.is('list');
+        });
+    },
+
+    exec: function(method) {
+        var manager = this.data('_wlxmlManager');
+        if(manager[method])
+            return manager[method].apply(manager, Array.prototype.slice.call(arguments, 1));
     }
 });
 
     }
 });
 
@@ -112,22 +125,39 @@ var DocumentNodeElement = function(htmlElement, canvas) {
 };
 
 $.extend(DocumentNodeElement, {
 };
 
 $.extend(DocumentNodeElement, {
-    createDOM: function(params) {
+    createDOM: function(params, canvas) {
         var dom = $('<div>')
         var dom = $('<div>')
-            .attr('wlxml-tag', params.tag);
-        if(params.klass)
-            dom.attr('wlxml-class', params.klass.replace(/\./g, '-'));
+                .attr('document-node-element', ''),
+            widgetsContainer = $('<div>')
+                .addClass('canvas-widgets')
+                .attr('contenteditable', false),
+            container = $('<div>')
+                .attr('document-element-content', '');
+        
+        dom.append(widgetsContainer, container);
+        // Make sure widgets aren't navigable with arrow keys
+        widgetsContainer.find('*').add(widgetsContainer).attr('tabindex', -1);
+
+        var element = this.fromHTMLElement(dom[0], canvas);
+
+        element.setWlxml({tag: params.tag, klass: params.klass});
         if(params.meta) {
             _.keys(params.meta).forEach(function(key) {
         if(params.meta) {
             _.keys(params.meta).forEach(function(key) {
-                dom.attr('wlxml-meta-'+key, params.meta[key]);
+                element.setWlxmlMetaAttr(key, params.meta[key]);
             });
         }
             });
         }
-        dom.data('other-attrs', params.others);
+        element.data('other-attrs', params.others);
+
+        if(params.rawChildren && params.rawChildren.length) {
+            container.append(params.rawChildren);
+        } else if(params.prepopulateOnEmpty) {
+            element.append(DocumentTextElement.create({text: ''}));
+        }
         return dom;
     },
 
     create: function(params, canvas) {
         return dom;
     },
 
     create: function(params, canvas) {
-        return this.fromHTMLElement(this.createDOM(params)[0]);
+        return this.fromHTMLElement(this.createDOM(params, canvas)[0], canvas);
     },
 
     fromHTMLElement: function(htmlElement, canvas) {
     },
 
     fromHTMLElement: function(htmlElement, canvas) {
@@ -142,7 +172,8 @@ var manipulate = function(e, params, action) {
     } else {
         element = DocumentElement.create(params);
     }
     } else {
         element = DocumentElement.create(params);
     }
-    e.dom()[action](element.dom());
+    var target = (action === 'append' || action === 'prepend') ? e._container() : e.dom();
+    target[action](element.dom());
     return element;
 };
 
     return element;
 };
 
@@ -150,11 +181,32 @@ DocumentNodeElement.prototype = new DocumentElement();
 
 
 $.extend(DocumentNodeElement.prototype, {
 
 
 $.extend(DocumentNodeElement.prototype, {
+    _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;
+    },
     data: function() {
         var dom = this.dom(),
             args = Array.prototype.slice.call(arguments, 0);
         if(args.length === 2 && args[1] === undefined)
     data: function() {
         var dom = this.dom(),
             args = Array.prototype.slice.call(arguments, 0);
         if(args.length === 2 && args[1] === undefined)
-            return dom.removeData(args[1]);
+            return dom.removeData(args[0]);
         return dom.data.apply(dom, arguments);
     },
     toXML: function(level) {
         return dom.data.apply(dom, arguments);
     },
     toXML: function(level) {
@@ -173,60 +225,66 @@ $.extend(DocumentNodeElement.prototype, {
 
         var addFormatting = function() {
             var toret = $('<div>');
 
         var addFormatting = function() {
             var toret = $('<div>');
+            var formattings = {};
 
 
-            if(this.data('orig-before') && this.data('orig-before').length) {
-                this.data('orig-before').forEach(function(toAdd) {
-                    if(toAdd)
-                        toret.prepend(document.createTextNode(toAdd));
-                });
+            if(this.data('orig-before') !== undefined) {
+                if(this.data('orig-before')) {
+                    toret.prepend(document.createTextNode(this.data('orig-before')));
+                }
             } else if(level && this.getWlxmlTag() !== 'span') {
                 toret.append('\n' + (new Array(level * 2 + 1)).join(' '));
             }
             } else if(level && this.getWlxmlTag() !== 'span') {
                 toret.append('\n' + (new Array(level * 2 + 1)).join(' '));
             }
-            if(this.data('orig-append') && this.data('orig-append').length) {
-                this.data('orig-append').forEach(function(toAdd) {
-                    if(toAdd)
-                        node.prepend(toAdd);
-                });
-            } else if(this.getWlxmlTag() !== 'span'){
+
+            toret.append(node);
+
+            if(this.data('orig-after')) {
+                toret.append(document.createTextNode(this.data('orig-after')));
+            }
+
+            /* Inside node */
+            if(this.data('orig-begin')) {
+                node.prepend(this.data('orig-begin'));
+                formattings.begin = true;
+            }
+
+            if(this.data('orig-end') !== undefined) {
+                if(this.data('orig-end')) {
+                    node.append(this.data('orig-end'));
+                }
+            } else if(this.getWlxmlTag() !== 'span' && children.length){
                 node.append('\n' + (new Array(level * 2 + 1)).join(' '));
             }
                 node.append('\n' + (new Array(level * 2 + 1)).join(' '));
             }
-            toret.append(node);
-            return toret.contents();
+           
+            return {parts: toret.contents(), formattings: formattings};
         }.bind(this);
 
         }.bind(this);
 
-        var parts = addFormatting(node);
+        
         
         var children = this.children(),
         
         var children = this.children(),
-            childParts,
-            prevChildParts;
+            childParts;
 
 
-        var containsPrefixAndSuffix = function(idx) {
-            if(idx === children.length - 1 && node.contents().length === 2)
-                return true;
-            if(prevChildParts && prevChildParts.length > 1 && prevChildParts[0].nodeType === Node.TEXT_NODE && prevChildParts[1].nodeType === Node.TEXT_NODE)
-                return true;
-            return false;
-        }
+        var formatting = addFormatting(node);
 
         for(var i = children.length - 1; i >= 0; i--) {
             childParts = children[i].toXML(level + 1);
             if(typeof childParts === 'string')
                 childParts = [document.createTextNode(childParts)];
 
 
         for(var i = children.length - 1; i >= 0; i--) {
             childParts = children[i].toXML(level + 1);
             if(typeof childParts === 'string')
                 childParts = [document.createTextNode(childParts)];
 
-            if(containsPrefixAndSuffix(i) && children[i] instanceof DocumentTextElement) {
+            if(formatting.formattings.begin) {
                 $(node.contents()[0]).after(childParts);
                 $(node.contents()[0]).after(childParts);
-            } else {
+            } else
                 node.prepend(childParts);
                 node.prepend(childParts);
-            }
-            prevChildParts = childParts;
         }
         }
-        return parts;
+        return formatting.parts;
     },
     append: function(params) {
         if(params.tag !== 'span')
     },
     append: function(params) {
         if(params.tag !== 'span')
-            this.data('orig-append', []);
+            this.data('orig-end', undefined);
         return manipulate(this, params, 'append');
     },
         return manipulate(this, params, 'append');
     },
+    prepend: function(params) {
+        return manipulate(this, params, 'prepend');
+    },
     before: function(params) {
         return manipulate(this, params, 'before');
 
     before: function(params) {
         return manipulate(this, params, 'before');
 
@@ -240,10 +298,12 @@ $.extend(DocumentNodeElement.prototype, {
             return toret;
 
 
             return toret;
 
 
-        var elementContent = this.dom().contents();
+        var elementContent = this._container().contents();
         var element = this;
         elementContent.each(function(idx) {
             var childElement = DocumentElement.fromHTMLElement(this, element.canvas);
         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()) === '')
                 return true;
             if(idx > 0 && childElement instanceof DocumentTextElement) {
             if(idx === 0 && elementContent.length > 1 && elementContent[1].nodeType === Node.ELEMENT_NODE && (childElement instanceof DocumentTextElement) && $.trim($(this).text()) === '')
                 return true;
             if(idx > 0 && childElement instanceof DocumentTextElement) {
@@ -266,38 +326,62 @@ $.extend(DocumentNodeElement.prototype, {
         return toret;
     },
     getWlxmlTag: function() {
         return toret;
     },
     getWlxmlTag: function() {
-        return this.dom().attr('wlxml-tag');
+        return this._container().attr('wlxml-tag');
     },
     setWlxmlTag: function(tag) {
     },
     setWlxmlTag: function(tag) {
-        this.dom().attr('wlxml-tag', tag);
+        if(tag === this.getWlxmlTag())
+            return;
+
+        this._container().attr('wlxml-tag', tag);
+        if(!this.__updatingWlxml)
+            this._updateWlxmlManager();
     },
     getWlxmlClass: function() {
     },
     getWlxmlClass: function() {
-        var klass = this.dom().attr('wlxml-class');
+        var klass = this._container().attr('wlxml-class');
         if(klass)
             return klass.replace(/-/g, '.');
         return undefined;
     },
     setWlxmlClass: function(klass) {
         if(klass)
             return klass.replace(/-/g, '.');
         return undefined;
     },
     setWlxmlClass: function(klass) {
+        if(klass === this.getWlxmlClass())
+            return;
+
         this.getWlxmlMetaAttrs().forEach(function(attr) {
             if(!classAttributes.hasMetaAttr(klass, attr.name))
                 this.dom().removeAttr('wlxml-meta-' + attr.name);
         }, this);
 
         if(klass)
         this.getWlxmlMetaAttrs().forEach(function(attr) {
             if(!classAttributes.hasMetaAttr(klass, attr.name))
                 this.dom().removeAttr('wlxml-meta-' + attr.name);
         }, this);
 
         if(klass)
-            this.dom().attr('wlxml-class', klass.replace(/\./g, '-'));
+            this._container().attr('wlxml-class', klass.replace(/\./g, '-'));
         else
         else
-            this.dom().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) {
     },
     is: function(what) {
-        if(what === 'list' && _.contains(['list-items', 'list-items-enum'], this.dom().attr('wlxml-class')))
+        if(what === 'list' && _.contains(['list.items', 'list.items.enum'], this.getWlxmlClass()))
             return true;
         return false;
     },
 
             return true;
         return false;
     },
 
-
     getWlxmlMetaAttr: function(attr) {
         return this.dom().attr('wlxml-meta-'+attr);
     },
     getWlxmlMetaAttr: function(attr) {
         return this.dom().attr('wlxml-meta-'+attr);
     },
+
     getWlxmlMetaAttrs: function() {
         var toret = [];
         var attrList = classAttributes.getMetaAttrsList(this.getWlxmlClass());
     getWlxmlMetaAttrs: function() {
         var toret = [];
         var attrList = classAttributes.getMetaAttrsList(this.getWlxmlClass());
@@ -306,8 +390,27 @@ $.extend(DocumentNodeElement.prototype, {
         }, this);
         return toret;
     },
         }, this);
         return toret;
     },
+
     setWlxmlMetaAttr: function(attr, value) {
         this.dom().attr('wlxml-meta-'+attr, value);
     setWlxmlMetaAttr: function(attr, value) {
         this.dom().attr('wlxml-meta-'+attr, value);
+    },
+    
+    toggleLabel: function(toggle) {
+        var displayCss = toggle ? 'inline-block' : 'none';
+        var label = this.dom().children('.canvas-widgets').find('.canvas-widget-label');
+        label.css('display', displayCss);
+        this.toggleHighlight(toggle);
+    },
+
+    toggleHighlight: function(toggle) {
+        this._container().toggleClass('highlighted-element', toggle);
+    },
+
+    toggle: function(toggle) {
+        var mng = this.data('_wlxmlManager');
+        if(mng) {
+            mng.toggle(toggle);
+        }
     }
 });
 
     }
 });
 
@@ -320,8 +423,8 @@ var DocumentTextElement = function(htmlElement, canvas) {
 $.extend(DocumentTextElement, {
     createDOM: function(params) {
         return $('<div>')
 $.extend(DocumentTextElement, {
     createDOM: function(params) {
         return $('<div>')
-            .attr('wlxml-text', '')
-            .text(params.text);
+            .attr('document-text-element', '')
+            .text(params.text || utils.unicode.ZWS);
     },
 
     create: function(params, canvas) {
     },
 
     create: function(params, canvas) {
@@ -330,6 +433,9 @@ $.extend(DocumentTextElement, {
 
     fromHTMLElement: function(htmlElement, canvas) {
         return new this(htmlElement, canvas);
 
     fromHTMLElement: function(htmlElement, canvas) {
         return new this(htmlElement, canvas);
+    },
+    isContentContainer: function(htmlElement) {
+        return htmlElement.nodeType === Node.TEXT_NODE && $(htmlElement).parent().is('[document-text-element]');
     }
 });
 
     }
 });
 
@@ -346,11 +452,23 @@ $.extend(DocumentTextElement.prototype, {
         else
             this.$element = $element;
     },
         else
             this.$element = $element;
     },
+    detach: function() {
+        this.dom().detach();
+        this.canvas = null;
+        return this;
+    },
     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;
+    },
     getText: function() {
     getText: function() {
-        return this.dom().text();
+        return this.dom().text().replace(utils.unicode.ZWS, '');
+    },
+    isEmpty: function() {
+        // Having at least Zero Width Space is guaranteed be Content Observer
+        return this.dom().contents()[0].data === utils.unicode.ZWS;
     },
     after: function(params) {
         if(params instanceof DocumentTextElement || params.text)
     },
     after: function(params) {
         if(params instanceof DocumentTextElement || params.text)
@@ -359,7 +477,7 @@ $.extend(DocumentTextElement.prototype, {
         if(params instanceof DocumentNodeElement) {
             element = params;
         } else {
         if(params instanceof DocumentNodeElement) {
             element = params;
         } else {
-            element = DocumentNodeElement.create(params);
+            element = DocumentNodeElement.create(params, this.canvas);
         }
         this.dom().wrap('<div>');
         this.dom().parent().after(element.dom());
         }
         this.dom().wrap('<div>');
         this.dom().parent().after(element.dom());
@@ -373,7 +491,7 @@ $.extend(DocumentTextElement.prototype, {
         if(params instanceof DocumentNodeElement) {
             element = params;
         } else {
         if(params instanceof DocumentNodeElement) {
             element = params;
         } else {
-            element = DocumentNodeElement.create(params);
+            element = DocumentNodeElement.create(params, this.canvas);
         }
         this.dom().wrap('<div>');
         this.dom().parent().before(element.dom());
         }
         this.dom().wrap('<div>');
         this.dom().parent().before(element.dom());
@@ -404,12 +522,17 @@ $.extend(DocumentTextElement.prototype, {
                     idx = grandParent.childIndex(parent),
                     prev = idx - 1 > -1 ? grandParentChildren[idx-1] : null,
                     next = idx + 1 < grandParentChildren.length ? grandParentChildren[idx+1] : null;
                     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) {
                 if(prev && next) {
                     prev.setText(prev.getText() + this.getText() + next.getText());
                     next.detach();
                 } else if (prev || next) {
-                    var target = prev ? prev : next;
-                    target.setText(target.getText() + this.getText());
+                    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);
                 }
@@ -453,6 +576,28 @@ $.extend(DocumentTextElement.prototype, {
 
         return {first: parentElement, second: newElement};
     },
 
         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
+    }
 });
 
 return {
 });
 
 return {