case-study/jdt-before/ui/org/eclipse/jdt/internal/ui/callhierarchy/LocationCopyAction.java

   1 /*******************************************************************************
   2  * Copyright (c) 2006, 2011 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Eclipse Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/epl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package org.eclipse.jdt.internal.ui.callhierarchy;
  12
  13 import java.util.Iterator;
  14
  15 import org.eclipse.swt.SWTError;
  16 import org.eclipse.swt.dnd.Clipboard;
  17 import org.eclipse.swt.dnd.DND;
  18 import org.eclipse.swt.dnd.TextTransfer;
  19 import org.eclipse.swt.dnd.Transfer;
  20
  21 import org.eclipse.jface.action.Action;
  22 import org.eclipse.jface.dialogs.MessageDialog;
  23 import org.eclipse.jface.viewers.ISelectionChangedListener;
  24 import org.eclipse.jface.viewers.IStructuredSelection;
  25 import org.eclipse.jface.viewers.SelectionChangedEvent;
  26
  27 import org.eclipse.ui.IViewSite;
  28 import org.eclipse.ui.IWorkbenchCommandConstants;
  29
  30
  31 import org.eclipse.jdt.internal.corext.callhierarchy.CallLocation;
  32
  33 /**
  34  * Copies the selection from the location viewer.
  35  */
  36 class LocationCopyAction extends Action {
  37         private final Clipboard fClipboard;
  38         private final IViewSite fViewSite;
  39         private final LocationViewer fLocationViewer;
  40
  41         LocationCopyAction(IViewSite viewSite, Clipboard clipboard, LocationViewer locationViewer) {
  42                 fClipboard= clipboard;
  43                 fViewSite= viewSite;
  44                 fLocationViewer= locationViewer;
  45
  46                 setText(CallHierarchyMessages.LocationCopyAction_copy);
  47                 setActionDefinitionId(IWorkbenchCommandConstants.EDIT_COPY);
  48                 setEnabled(!fLocationViewer.getSelection().isEmpty());
  49
  50                 locationViewer.addSelectionChangedListener(new ISelectionChangedListener() {
  51                         public void selectionChanged(SelectionChangedEvent event) {
  52                                 setEnabled(! event.getSelection().isEmpty());
  53                         }
  54                 });
  55         }
  56
  57         @Override
  58         public void run() {
  59                 IStructuredSelection selection= (IStructuredSelection) fLocationViewer.getSelection();
  60                 StringBuffer buf= new StringBuffer();
  61                 for (Iterator<?> iterator= selection.iterator(); iterator.hasNext();) {
  62                         CallLocation location= (CallLocation) iterator.next();
  63                         buf.append(location.getLineNumber()).append('\t').append(location.getCallText());
  64                         buf.append('\n');
  65                 }
  66                 TextTransfer plainTextTransfer = TextTransfer.getInstance();
  67                 try {
  68                         fClipboard.setContents(
  69                                         new String[]{ CopyCallHierarchyAction.convertLineTerminators(buf.toString()) },
  70                                         new Transfer[]{ plainTextTransfer });
  71                 } catch (SWTError e){
  72                         if (e.code != DND.ERROR_CANNOT_SET_CLIPBOARD)
  73                                 throw e;
  74                         if (MessageDialog.openQuestion(fViewSite.getShell(), CallHierarchyMessages.CopyCallHierarchyAction_problem, CallHierarchyMessages.CopyCallHierarchyAction_clipboard_busy))
  75                                 run();
  76                 }
  77         }
  78 }