1 files changed, 123 insertions, 0 deletions
diff --git a/src/plugins/db.core/src/com/motorolamobility/studio/android/db/core/DbRootNodeReader.java b/src/plugins/db.core/src/com/motorolamobility/studio/android/db/core/DbRootNodeReader.java
new file mode 100644
index 0000000..aed0154
--- /dev/null
+++ b/src/plugins/db.core/src/com/motorolamobility/studio/android/db/core/DbRootNodeReader.java
@@ -0,0 +1,123 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * 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.
+ */
+package com.motorolamobility.studio.android.db.core;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IConfigurationElement;
+import org.eclipse.core.runtime.IExtension;
+import org.eclipse.core.runtime.IExtensionPoint;
+import org.eclipse.core.runtime.IExtensionRegistry;
+import org.eclipse.core.runtime.Platform;
+import org.eclipse.jface.resource.ImageDescriptor;
+import org.eclipse.ui.PartInitException;
+
+import com.motorola.studio.android.common.log.StudioLogger;
+import com.motorolamobility.studio.android.db.core.ui.AbstractTreeNode;
+
+public abstract class DbRootNodeReader
+{
+    public static final String DB_ROOT_NODE_EXTENSION_POINT_ID =
+            "com.motorolamobility.studio.android.db.core.dbRootNode"; //$NON-NLS-1$
+
+    public static final String DB_ROOT_NODE_EXTENSION_POINT_ATTRIBUTE_ID = "id"; //$NON-NLS-1$
+
+    public static final String DB_ROOT_NODE_EXTENSION_POINT_ATTRIBUTE_NAME = "name"; //$NON-NLS-1$
+
+    public static final String DB_ROOT_NODE_EXTENSION_POINT_ATTRIBUTE_ICON = "icon"; //$NON-NLS-1$
+
+    public static final String DB_ROOT_NODE_EXTENSION_POINT_ATTRIBUTE_CLASS = "class"; //$NON-NLS-1$
+
+    /**
+     * Load existing root nodes, mapped by extension id      
+     * 
+     * @param treeNodeList The map of root nodes to be populated 
+     * 
+     */
+    public static void loadRootNode(HashMap<String, AbstractTreeNode> treeNodeList)
+            throws PartInitException
+
+    {
+        List<String> failedNodeNames = new ArrayList<String>();
+        treeNodeList.clear();
+
+        IExtensionRegistry extReg = Platform.getExtensionRegistry();
+        IExtensionPoint extPoint = extReg.getExtensionPoint(DB_ROOT_NODE_EXTENSION_POINT_ID);
+
+        String id = null;
+        String name = null;
+        if (extPoint != null)
+        {
+
+            IExtension[] extensions = extPoint.getExtensions();
+
+            for (IExtension aExtension : extensions)
+            {
+                IConfigurationElement[] configElements = aExtension.getConfigurationElements();
+                for (IConfigurationElement aConfig : configElements)
+                {
+
+                    id = aConfig.getAttribute(DB_ROOT_NODE_EXTENSION_POINT_ATTRIBUTE_ID);
+                    name = aConfig.getAttribute(DB_ROOT_NODE_EXTENSION_POINT_ATTRIBUTE_NAME);
+
+                    String nodeClassName =
+                            aConfig.getAttribute(DB_ROOT_NODE_EXTENSION_POINT_ATTRIBUTE_CLASS);
+
+                    AbstractTreeNode treeNode = null;
+                    if (nodeClassName != null)
+                    {
+
+                        try
+                        {
+                            treeNode =
+                                    (AbstractTreeNode) aConfig
+                                            .createExecutableExtension(DB_ROOT_NODE_EXTENSION_POINT_ATTRIBUTE_CLASS);
+                            treeNode.setId(id);
+                            treeNode.setName(name);
+                            if (aConfig.getAttribute(DB_ROOT_NODE_EXTENSION_POINT_ATTRIBUTE_ICON) != null)
+                            {
+                                ImageDescriptor icon =
+                                        DbCoreActivator
+                                                .imageDescriptorFromPlugin(
+                                                        DbCoreActivator.PLUGIN_ID,
+                                                        aConfig.getAttribute(DB_ROOT_NODE_EXTENSION_POINT_ATTRIBUTE_ICON));
+                                treeNode.setIcon(icon);
+                            }
+
+                            treeNodeList.put(id, treeNode);
+                        }
+                        catch (CoreException e)
+                        {
+                            StudioLogger
+                                    .error(DbRootNodeReader.class,
+                                            "Unexpected error with the root node extension point. Name:" + name + " ID:" + id, e); //$NON-NLS-1$ //$NON-NLS-2$
+                            failedNodeNames.add(name);
+                        }
+                    }
+                }
+            }
+
+            if (!failedNodeNames.isEmpty())
+            {
+                throw new PartInitException("The following nodes could not be loaded : " //$NON-NLS-1$
+                        + failedNodeNames);
+            }
+        }
+    }
+}