Add a top-level node in the Files view to display the SDK libraries.

editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/filesview/SdkDirectoryNode.java

Index: editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/filesview/SdkDirectoryNode.java
===================================================================
--- editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/filesview/SdkDirectoryNode.java	(revision 0)
+++ editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/filesview/SdkDirectoryNode.java	(revision 0)
@@ -0,0 +1,96 @@
+/*
+ * Copyright (c) 2012, the Dart project authors.
+ * 
+ * Licensed under the Eclipse Public License v1.0 (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.eclipse.org/legal/epl-v10.html
+ * 
+ * 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.google.dart.tools.ui.internal.filesview;
+
+import com.google.dart.tools.core.internal.model.SystemLibraryManagerProvider;
+import com.google.dart.tools.ui.DartToolsPlugin;
+
+import org.eclipse.core.filesystem.EFS;
+import org.eclipse.core.runtime.IAdapterFactory;
+import org.eclipse.core.runtime.Platform;
+import org.eclipse.jface.resource.ImageDescriptor;
+import org.eclipse.ui.model.IWorkbenchAdapter;
+import org.eclipse.ui.model.WorkbenchAdapter;
+
+import java.io.File;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * A class used to represent the SDK directory.
+ */
+class SdkDirectoryNode {
+
+  static class SdkDirectoryWorkbenchAdapter extends WorkbenchAdapter implements IAdapterFactory {
+    @SuppressWarnings("rawtypes")
+    @Override
+    public Object getAdapter(Object adaptableObject, Class adapterType) {
+      if (adapterType == IWorkbenchAdapter.class) {
+        return this;
+      } else {
+        return null;
+      }
+    }
+
+    @SuppressWarnings("rawtypes")
+    @Override
+    public Class[] getAdapterList() {
+      return new Class[] {IWorkbenchAdapter.class};
+    }
+
+    @Override
+    public ImageDescriptor getImageDescriptor(Object object) {
+      return DartToolsPlugin.getImageDescriptor("icons/full/dart16/library_container.png");
+    }
+
+    @Override
+    public String getLabel(Object object) {
+      return ((SdkDirectoryNode) object).toString();
+    }
+  }
+
+  public static final SdkDirectoryNode INSTANCE = new SdkDirectoryNode();
+
+  static {
+    Platform.getAdapterManager().registerAdapters(new SdkDirectoryWorkbenchAdapter(),
+        SdkDirectoryNode.class);
+  }
+
+  private SdkLibraryNode[] libraries;
+
+  public SdkLibraryNode[] getLibraries() {
+    if (libraries == null) {
+      List<SdkLibraryNode> libs = new ArrayList<SdkLibraryNode>();
+
+      File file = SystemLibraryManagerProvider.getSystemLibraryManager().getLibrariesDir();
+
+      for (File child : file.listFiles()) {
+        if (child.isDirectory()) {
+          libs.add(new SdkLibraryNode(EFS.getLocalFileSystem().fromLocalFile(child)));
+        }
+      }
+
+      libraries = libs.toArray(new SdkLibraryNode[libs.size()]);
+    }
+
+    return libraries;
+  }
+
+  @Override
+  public String toString() {
+    return "SDK Libraries";
+  }
+
+}