Files View copy/paste and keybindings/menu repair.

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

Index: editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/filesview/CopyAction.java
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--- editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/filesview/CopyAction.java	(revision 0)
+++ editor/tools/plugins/com.google.dart.tools.ui/src/com/google/dart/tools/ui/internal/filesview/CopyAction.java	(revision 0)
@@ -0,0 +1,222 @@
+/*
+ * 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.DartToolsPlugin;
+
+import org.eclipse.core.resources.IContainer;
+import org.eclipse.core.resources.IResource;
+import org.eclipse.core.runtime.Assert;
+import org.eclipse.core.runtime.IPath;
+import org.eclipse.jface.dialogs.MessageDialog;
+import org.eclipse.jface.viewers.IStructuredSelection;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.SWTError;
+import org.eclipse.swt.dnd.Clipboard;
+import org.eclipse.swt.dnd.DND;
+import org.eclipse.swt.dnd.FileTransfer;
+import org.eclipse.swt.dnd.TextTransfer;
+import org.eclipse.swt.dnd.Transfer;
+import org.eclipse.swt.widgets.Shell;
+import org.eclipse.ui.ISharedImages;
+import org.eclipse.ui.PlatformUI;
+import org.eclipse.ui.actions.SelectionListenerAction;
+import org.eclipse.ui.internal.views.navigator.ResourceNavigatorMessages;
+import org.eclipse.ui.part.ResourceTransfer;
+
+import java.util.Iterator;
+import java.util.List;
+
+/**
+ * Standard action for copying the currently selected resources to the clipboard.
+ * <p>
+ * Based on the package private <code>org.eclipse.ui.views.navigator.CopyAction</code>.
+ * </p>
+ */
+@SuppressWarnings({"restriction", "rawtypes"})
+public class CopyAction extends SelectionListenerAction {
+
+  /**
+   * The id of this action.
+   */
+  public static final String ID = DartToolsPlugin.PLUGIN_ID + ".CopyAction"; //$NON-NLS-1$
+
+  /**
+   * The shell in which to show any dialogs.
+   */
+  private Shell shell;
+
+  /**
+   * System clipboard
+   */
+  private Clipboard clipboard;
+
+  /**
+   * Associated paste action. May be <code>null</code>
+   */
+  private PasteAction pasteAction;
+
+  /**
+   * Creates a new action.
+   * 
+   * @param shell the shell for any dialogs
+   * @param clipboard a platform clipboard
+   */
+  public CopyAction(Shell shell, Clipboard clipboard) {
+    super(ResourceNavigatorMessages.CopyAction_title);
+    Assert.isNotNull(shell);
+    Assert.isNotNull(clipboard);
+    this.shell = shell;
+    this.clipboard = clipboard;
+    setToolTipText(ResourceNavigatorMessages.CopyAction_toolTip);
+    setId(CopyAction.ID);
+    setAccelerator(SWT.MOD1 | 'c');
+    setImageDescriptor(PlatformUI.getWorkbench().getSharedImages().getImageDescriptor(
+        ISharedImages.IMG_TOOL_COPY));
+    setDisabledImageDescriptor(PlatformUI.getWorkbench().getSharedImages().getImageDescriptor(
+        ISharedImages.IMG_TOOL_COPY_DISABLED));
+
+  }
+
+  /**
+   * Creates a new action.
+   * 
+   * @param shell the shell for any dialogs
+   * @param clipboard a platform clipboard
+   * @param pasteAction a paste action
+   */
+  public CopyAction(Shell shell, Clipboard clipboard, PasteAction pasteAction) {
+    this(shell, clipboard);
+    this.pasteAction = pasteAction;
+  }
+
+  @SuppressWarnings("unchecked")
+  @Override
+  public void run() {
+
+    List selectedResources = getSelectedResources();
+    IResource[] resources = (IResource[]) selectedResources.toArray(new IResource[selectedResources.size()]);
+
+    // Get the file names and a string representation
+    final int length = resources.length;
+    int actualLength = 0;
+    String[] fileNames = new String[length];
+    StringBuffer buf = new StringBuffer();
+    for (int i = 0; i < length; i++) {
+      IPath location = resources[i].getLocation();
+      // location may be null. See bug 29491.
+      if (location != null) {
+        fileNames[actualLength++] = location.toOSString();
+      }
+      if (i > 0) {
+        buf.append("\n"); //$NON-NLS-1$
+      }
+      buf.append(resources[i].getName());
+    }
+    // was one or more of the locations null?
+    if (actualLength < length) {
+      String[] tempFileNames = fileNames;
+      fileNames = new String[actualLength];
+      for (int i = 0; i < actualLength; i++) {
+        fileNames[i] = tempFileNames[i];
+      }
+    }
+    setClipboard(resources, fileNames, buf.toString());
+
+    // update the enablement of the paste action
+    // workaround since the clipboard does not suppot callbacks
+    if (pasteAction != null && pasteAction.getStructuredSelection() != null) {
+      pasteAction.selectionChanged(pasteAction.getStructuredSelection());
+    }
+  }
+
+  @Override
+  protected boolean updateSelection(IStructuredSelection selection) {
+
+    /**
+     * The <code>CopyAction</code> implementation of this <code>SelectionListenerAction</code>
+     * method enables this action if one or more resources of compatible types are selected.
+     */
+
+    if (!super.updateSelection(selection)) {
+      return false;
+    }
+
+    if (getSelectedNonResources().size() > 0) {
+      return false;
+    }
+
+    List selectedResources = getSelectedResources();
+    if (selectedResources.size() == 0) {
+      return false;
+    }
+
+    boolean projSelected = selectionIsOfType(IResource.PROJECT);
+    boolean fileFoldersSelected = selectionIsOfType(IResource.FILE | IResource.FOLDER);
+    if (!projSelected && !fileFoldersSelected) {
+      return false;
+    }
+
+    // selection must be homogeneous
+    if (projSelected && fileFoldersSelected) {
+      return false;
+    }
+
+    // must have a common parent  
+    IContainer firstParent = ((IResource) selectedResources.get(0)).getParent();
+    if (firstParent == null) {
+      return false;
+    }
+
+    Iterator resourcesEnum = selectedResources.iterator();
+    while (resourcesEnum.hasNext()) {
+      IResource currentResource = (IResource) resourcesEnum.next();
+      if (!currentResource.getParent().equals(firstParent)) {
+        return false;
+      }
+    }
+
+    return true;
+  }
+
+  /**
+   * Set the clipboard contents. Prompt to retry if clipboard is busy.
+   * 
+   * @param resources the resources to copy to the clipboard
+   * @param fileNames file names of the resources to copy to the clipboard
+   * @param names string representation of all names
+   */
+  private void setClipboard(IResource[] resources, String[] fileNames, String names) {
+    try {
+      // set the clipboard contents
+      if (fileNames.length > 0) {
+        clipboard.setContents(new Object[] {resources, fileNames, names}, new Transfer[] {
+            ResourceTransfer.getInstance(), FileTransfer.getInstance(), TextTransfer.getInstance()});
+      } else {
+        clipboard.setContents(new Object[] {resources, names},
+            new Transfer[] {ResourceTransfer.getInstance(), TextTransfer.getInstance()});
+      }
+    } catch (SWTError e) {
+      if (e.code != DND.ERROR_CANNOT_SET_CLIPBOARD) {
+        throw e;
+      }
+      if (MessageDialog.openQuestion(shell,
+          ResourceNavigatorMessages.CopyToClipboardProblemDialog_title,
+          ResourceNavigatorMessages.CopyToClipboardProblemDialog_message)) {
+        setClipboard(resources, fileNames, names);
+      }
+    }
+  }
+
+}