canvas api: dividing text element at the text boundries

[fnpeditor.git] / modules / documentCanvas / canvas / documentElement.js

diff --git a/modules/documentCanvas/canvas/documentElement.js b/modules/documentCanvas/canvas/documentElement.js
index 230e987..b516af1 100644 (file)
--- a/modules/documentCanvas/canvas/documentElement.js
+++ b/modules/documentCanvas/canvas/documentElement.js
@@ -1,8 +1,9 @@
 define([
 'libs/jquery-1.9.1.min',
 'libs/underscore-min',
-'modules/documentCanvas/classAttributes'
-], function($, _, classAttributes) {
+'modules/documentCanvas/classAttributes',
+'modules/documentCanvas/canvas/utils'
+], function($, _, classAttributes, utils) {
     
 'use strict';
 
@@ -122,6 +123,7 @@ $.extend(DocumentNodeElement, {
                 dom.attr('wlxml-meta-'+key, params.meta[key]);
             });
         }
+        dom.data('other-attrs', params.others);
         return dom;
     },
 
@@ -147,8 +149,86 @@ var manipulate = function(e, params, action) {
 
 DocumentNodeElement.prototype = new DocumentElement();
 
+
 $.extend(DocumentNodeElement.prototype, {
+    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);
+    },
+    toXML: function(level) {
+        var node = $('<' + this.getWlxmlTag() + '>');
+
+        if(this.getWlxmlClass())
+            node.attr('class', this.getWlxmlClass());
+        var meta = this.getWlxmlMetaAttrs();
+        meta.forEach(function(attr) {
+            if(attr.value)
+                node.attr('meta-' + attr.name, attr.value);
+        });
+        _.keys(this.data('other-attrs') || {}).forEach(function(key) {
+            node.attr(key, this.data('other-attrs')[key]);
+        }, this);
+
+        var addFormatting = function() {
+            var toret = $('<div>');
+            var formattings = {};
+
+            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(' '));
+            }
+
+            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(' '));
+            }
+           
+            return {parts: toret.contents(), formattings: formattings};
+        }.bind(this);
+
+        
+        
+        var children = this.children(),
+            childParts;
+
+        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)];
+
+            if(formatting.formattings.begin) {
+                $(node.contents()[0]).after(childParts);
+            } else
+                node.prepend(childParts);
+        }
+        return formatting.parts;
+    },
     append: function(params) {
+        if(params.tag !== 'span')
+            this.data('orig-end', undefined);
         return manipulate(this, params, 'append');
     },
     before: function(params) {
@@ -213,7 +293,7 @@ $.extend(DocumentNodeElement.prototype, {
             this.dom().removeAttr('wlxml-class');
     },
     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;
     },
@@ -245,7 +325,7 @@ $.extend(DocumentTextElement, {
     createDOM: function(params) {
         return $('<div>')
             .attr('wlxml-text', '')
-            .text(params.text);
+            .text(params.text || utils.unicode.ZWS);
     },
 
     create: function(params, canvas) {
@@ -254,12 +334,18 @@ $.extend(DocumentTextElement, {
 
     fromHTMLElement: function(htmlElement, canvas) {
         return new this(htmlElement, canvas);
+    },
+    isContentContainer: function(htmlElement) {
+        return htmlElement.nodeType === Node.TEXT_NODE && $(htmlElement).parent().is('[wlxml-text]');
     }
 });
 
 DocumentTextElement.prototype = new DocumentElement();
 
 $.extend(DocumentTextElement.prototype, {
+    toXML: function(parent) {
+        return this.getText();
+    },
     _setupDOMHandler: function(htmlElement) {
         var $element = $(htmlElement);
         if(htmlElement.nodeType === Node.TEXT_NODE)
@@ -271,7 +357,11 @@ $.extend(DocumentTextElement.prototype, {
         this.dom().contents()[0].data = text;
     },
     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)
@@ -374,6 +464,24 @@ $.extend(DocumentTextElement.prototype, {
 
         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;
+    }
 });
 
 return {