third batch

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

diff --git a/src/editor/modules/documentCanvas/canvas/elementsRegister.js b/src/editor/modules/documentCanvas/canvas/elementsRegister.js
new file mode 100644 (file)
index 0000000..0d31c7d
--- /dev/null
+++ b/src/editor/modules/documentCanvas/canvas/elementsRegister.js
@@ -0,0 +1,59 @@
+define(function(require) {
+    
+'use strict';
+var _ = require('libs/underscore'),
+    wlxml = require('wlxml/wlxml');
+
+
+var ElementsRegister = function(basePrototype, defaultPrototype) {
+    this._register = {};
+    this.basePrototype = basePrototype;
+    this.DefaultType = this.createCanvasElementType(defaultPrototype);
+};
+
+_.extend(ElementsRegister.prototype, {
+    createCanvasElementType: function(elementPrototype, extending) {
+        var inheritFrom = this.basePrototype;
+        if(extending && extending.tag) {
+            inheritFrom = this.getElement(extending);
+        }
+        var Constructor = function() {
+            if(!this.super) {
+                this.super = inheritFrom.prototype;
+            }
+            inheritFrom.apply(this, Array.prototype.slice.call(arguments, 0));
+            
+        };
+        Constructor.prototype = Object.create(inheritFrom.prototype);
+        _.extend(Constructor.prototype, elementPrototype);
+        return Constructor;
+    },
+    register: function(params) {
+        params.klass = params.klass || '';
+        params.prototype = params.prototype || Object.create({});
+
+        this._register[params.tag] = this._register[params.tag] || {};
+        this._register[params.tag][params.klass] = this.createCanvasElementType(params.prototype, params.extending);
+    },
+    getElement: function(params) {
+        params.klass = params.klass || '';
+        var Factory;
+        if(this._register[params.tag]) {
+            wlxml.getClassHierarchy(params.klass).reverse().some(function(klass) {
+                Factory = this._register[params.tag][klass];
+                if(Factory) {
+                    return true;
+                }
+            }.bind(this));
+        }
+        if(!Factory) {
+            Factory = this.DefaultType;
+        }
+        return Factory;
+    }
+});
+
+
+return ElementsRegister;
+
+});