Refresh action for the Files View.

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

Index: editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/filesview/RefreshAction.java
===================================================================
--- editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/filesview/RefreshAction.java	(revision 0)
+++ editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/filesview/RefreshAction.java	(revision 0)
@@ -0,0 +1,98 @@
+/*
+ * 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.resources.WorkspaceJob;
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IProgressMonitor;
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.core.runtime.Status;
+import org.eclipse.core.runtime.jobs.ISchedulingRule;
+import org.eclipse.jface.viewers.TreeViewer;
+import org.eclipse.jface.window.SameShellProvider;
+import org.eclipse.osgi.util.NLS;
+import org.eclipse.swt.widgets.Shell;
+import org.eclipse.ui.actions.WorkspaceModifyOperation;
+import org.eclipse.ui.internal.ide.IDEWorkbenchMessages;
+import org.eclipse.ui.internal.ide.StatusUtil;
+
+import java.lang.reflect.InvocationTargetException;
+
+/**
+ * Standard action for refreshing selected resources in the workspace.
+ */
+@SuppressWarnings("restriction")
+public class RefreshAction extends org.eclipse.ui.actions.RefreshAction {
+
+  private final FilesView view;
+
+  /**
+   * Creates a new action.
+   */
+  public RefreshAction(FilesView view) {
+    super(new SameShellProvider(view.getShell()));
+    DartPluginImages.setLocalImageDescriptors(this, "refresh.gif");//$NON-NLS-1$
+    this.view = view;
+  }
+
+  @Override
+  public void run() {
+
+    //viewer refresh smarts based on a similar action for the eclipse Resource Navigator
+    //(see org.eclipse.ui.views.navigator.WorkspaceActionGroup)
+
+    final IStatus[] errorStatus = new IStatus[1];
+    errorStatus[0] = Status.OK_STATUS;
+    final WorkspaceModifyOperation op = (WorkspaceModifyOperation) createOperation(errorStatus);
+    WorkspaceJob job = new WorkspaceJob("refresh") { //$NON-NLS-1$
+
+      @Override
+      public IStatus runInWorkspace(IProgressMonitor monitor) throws CoreException {
+        try {
+          op.run(monitor);
+          Shell shell = view.getShell();
+          if (shell != null && !shell.isDisposed()) {
+            shell.getDisplay().asyncExec(new Runnable() {
+              @Override
+              public void run() {
+                TreeViewer viewer = view.getViewer();
+                if (viewer != null && viewer.getControl() != null
+                    && !viewer.getControl().isDisposed()) {
+                  viewer.refresh();
+                }
+              }
+            });
+          }
+        } catch (InvocationTargetException e) {
+          String msg = NLS.bind(IDEWorkbenchMessages.WorkspaceAction_logTitle,
+              getClass().getName(), e.getTargetException());
+          throw new CoreException(StatusUtil.newStatus(IStatus.ERROR, msg, e.getTargetException()));
+        } catch (InterruptedException e) {
+          return Status.CANCEL_STATUS;
+        }
+        return errorStatus[0];
+      }
+
+    };
+    ISchedulingRule rule = op.getRule();
+    if (rule != null) {
+      job.setRule(rule);
+    }
+    job.setUser(true);
+    job.schedule();
+  }
+
+}