Introduce the convept of Feature to a topic.

mindplot/src/main/javascript/TopicFeature.js

@@ -0,0 +1,68 @@
+/*
+ *    Copyright [2011] [wisemapping]
+ *
+ *   Licensed under WiseMapping Public License, Version 1.0 (the "License").
+ *   It is basically the Apache License, Version 2.0 (the "License") plus the
+ *   "powered by wisemapping" text requirement on every single page;
+ *   you may not use this file except in compliance with the License.
+ *   You may obtain a copy of the license at
+ *
+ *       http://www.wisemapping.org/license
+ *
+ *   Unless required by applicable law or agreed to in writing, software
+ *   distributed under the License is distributed on an "AS IS" BASIS,
+ *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *   See the License for the specific language governing permissions and
+ *   limitations under the License.
+ */
+
+mindplot.TopicFeature = {
+    Icon: {
+        id:mindplot.model.IconModel.FEATURE_TYPE,
+        model: mindplot.model.IconModel,
+        icon : mindplot.ImageIcon
+    },
+
+    Link: {
+        id: mindplot.model.LinkModel.FEATURE_TYPE,
+        model: mindplot.model.LinkModel,
+        icon : mindplot.LinkIcon
+    },
+
+    Note: {
+        id: mindplot.model.NoteModel.FEATURE_TYPE,
+        model: mindplot.model.NoteModel,
+        icon : mindplot.NoteIcon
+    },
+
+    isSupported : function(id) {
+        return mindplot.TopicFeature._featuresMetadataById.some(function(elem) {
+            return elem.id == id;
+        });
+    },
+
+    createModel : function(id, topic, attributes) {
+        $assert(id, 'type can not be null');
+        $assert(topic, 'topic can not be null');
+        $assert(attributes, 'attributes can not be null');
+
+        var model = mindplot.TopicFeature._featuresMetadataById.filter(function(elem) {
+            return elem.id == id;
+        })[0].model;
+        return new model(topic, attributes);
+    },
+
+    createIcon : function(topic, model) {
+        $assert(topic, 'topic can not be null');
+        $assert(model, 'model can not be null');
+
+        var icon = mindplot.TopicFeature._featuresMetadataById.filter(function(elem) {
+            return elem.id == model.getType();
+        })[0].icon;
+        return new icon(topic, model);
+    }
+};
+
+mindplot.TopicFeature._featuresMetadataById = [mindplot.TopicFeature.Icon,mindplot.TopicFeature.Link,mindplot.TopicFeature.Note]
+
+