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/SdkLibraryNode.java

Index: editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/filesview/SdkLibraryNode.java
===================================================================
--- editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/filesview/SdkLibraryNode.java	(revision 0)
+++ editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/filesview/SdkLibraryNode.java	(revision 0)
@@ -0,0 +1,104 @@
+/*
+ * 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.ui.DartPluginImages;
+
+import org.eclipse.core.filesystem.EFS;
+import org.eclipse.core.filesystem.IFileStore;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IAdapterFactory;
+import org.eclipse.core.runtime.NullProgressMonitor;
+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.util.ArrayList;
+import java.util.List;
+
+/**
+ * A representation of a sdk library (e.g. dart:core, dart:io, ...).
+ */
+class SdkLibraryNode {
+
+  static class SdkLibraryWorkbenchAdapter 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 DartPluginImages.DESC_DART_LIB_FILE;
+    }
+
+    @Override
+    public String getLabel(Object object) {
+      return ((SdkLibraryNode) object).toString();
+    }
+  }
+
+  static {
+    Platform.getAdapterManager().registerAdapters(new SdkLibraryWorkbenchAdapter(),
+        SdkLibraryNode.class);
+  }
+
+  private IFileStore root;
+
+  public SdkLibraryNode(IFileStore root) {
+    this.root = root;
+  }
+
+  public IFileStore[] getFiles() {
+    try {
+      List<IFileStore> members = filteredMembers(root);
+
+      return members.toArray(new IFileStore[members.size()]);
+    } catch (CoreException e) {
+      return new IFileStore[0];
+    }
+  }
+
+  @Override
+  public String toString() {
+    return "dart:" + root.getName();
+  }
+
+  private List<IFileStore> filteredMembers(IFileStore file) throws CoreException {
+    List<IFileStore> children = new ArrayList<IFileStore>();
+
+    for (IFileStore child : file.childStores(EFS.NONE, new NullProgressMonitor())) {
+      String name = child.getName();
+      if (!(name.startsWith("."))) {
+        children.add(child);
+      }
+    }
+
+    return children;
+  }
+
+}