| /******************************************************************************* |
| * Copyright (c) 2011, 2015 Wind River Systems, Inc. and others. All rights reserved. |
| * This program and the accompanying materials are made available under the terms |
| * of the Eclipse Public License v1.0 which accompanies this distribution, and is |
| * available at http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Wind River Systems - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.tcf.te.tcf.filesystem.ui.internal.operations; |
| |
| import java.beans.PropertyChangeEvent; |
| import java.util.List; |
| import java.util.concurrent.atomic.AtomicReference; |
| |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.swt.SWTException; |
| import org.eclipse.swt.dnd.Clipboard; |
| import org.eclipse.swt.dnd.Transfer; |
| import org.eclipse.swt.widgets.Display; |
| import org.eclipse.tcf.te.core.utils.PropertyChangeProvider; |
| import org.eclipse.tcf.te.tcf.filesystem.core.interfaces.runtime.IFSTreeNode; |
| import org.eclipse.tcf.te.ui.swt.DisplayUtil; |
| import org.eclipse.ui.PlatformUI; |
| |
| /** |
| * The clip board to which copy or cut files/folders. |
| */ |
| public class FsClipboard extends PropertyChangeProvider { |
| |
| /* default */ static class FsClipboardContent { |
| // The constants to define the current operation type of the clip board. |
| public static final int CUT = 0; |
| public static final int COPY = 1; |
| |
| // The operation type, CUT, COPY or NONE. |
| public final int operation; |
| // The currently selected files/folders. |
| public final List<IFSTreeNode> files; |
| |
| /** |
| * Constructor |
| */ |
| public FsClipboardContent(int operation, List<IFSTreeNode> files) { |
| Assert.isTrue(operation == CUT || operation == COPY); |
| this.operation = operation; |
| Assert.isNotNull(files); |
| this.files = files; |
| } |
| } |
| |
| /* default */ final Clipboard clipboard; |
| |
| /** |
| * Create a clip board instance. |
| */ |
| public FsClipboard() { |
| clipboard = new Clipboard(PlatformUI.getWorkbench().getDisplay()); |
| } |
| |
| public boolean isCutOp() { |
| final AtomicReference<Object> object = new AtomicReference<Object>(); |
| |
| Runnable runnable = new Runnable() { |
| @Override |
| public void run() { |
| object.set(clipboard.getContents(FsClipboardTransfer.getInstance())); |
| } |
| }; |
| |
| exec(runnable); |
| |
| FsClipboardContent content = (FsClipboardContent) object.get(); |
| |
| return content != null && content.operation == FsClipboardContent.CUT; |
| } |
| |
| public boolean isCopyOp() { |
| final AtomicReference<Object> object = new AtomicReference<Object>(); |
| |
| Runnable runnable = new Runnable() { |
| @Override |
| public void run() { |
| object.set(clipboard.getContents(FsClipboardTransfer.getInstance())); |
| } |
| }; |
| |
| exec(runnable); |
| |
| FsClipboardContent content = (FsClipboardContent) object.get(); |
| |
| return content != null && content.operation == FsClipboardContent.COPY; |
| } |
| |
| public boolean isEmpty() { |
| final AtomicReference<Object> object = new AtomicReference<Object>(); |
| |
| Runnable runnable = new Runnable() { |
| @Override |
| public void run() { |
| object.set(clipboard.getContents(FsClipboardTransfer.getInstance())); |
| } |
| }; |
| |
| exec(runnable); |
| |
| FsClipboardContent content = (FsClipboardContent) object.get(); |
| |
| return content == null || content.files.isEmpty(); |
| } |
| |
| /** |
| * Get the currently selected files/folders to operated. |
| */ |
| public List<IFSTreeNode> getFiles() { |
| final AtomicReference<Object> object = new AtomicReference<Object>(); |
| |
| Runnable runnable = new Runnable() { |
| @Override |
| public void run() { |
| object.set(clipboard.getContents(FsClipboardTransfer.getInstance())); |
| } |
| }; |
| |
| exec(runnable); |
| |
| FsClipboardContent content = (FsClipboardContent) object.get(); |
| |
| return content.files; |
| } |
| |
| /** |
| * Cut the specified files/folders to the clip board. |
| */ |
| public void cutFiles(List<IFSTreeNode> files) { |
| Assert.isNotNull(files); |
| |
| final FsClipboardContent content = new FsClipboardContent(FsClipboardContent.CUT, files); |
| final FsClipboardTransfer transfer = FsClipboardTransfer.getInstance(); |
| transfer.setContent(content); |
| |
| Runnable runnable = new Runnable() { |
| @Override |
| public void run() { |
| clipboard.setContents(new Object[] { content }, new Transfer[] { transfer }); |
| |
| PropertyChangeEvent event = new PropertyChangeEvent(this, "cut", null, null); //$NON-NLS-1$ |
| firePropertyChange(event); |
| } |
| }; |
| |
| exec(runnable); |
| } |
| |
| /** |
| * Copy the specified files/folders to the clip board. |
| * |
| * @param files The file/folder nodes. |
| */ |
| public void copyFiles(List<IFSTreeNode> files) { |
| Assert.isNotNull(files); |
| |
| final FsClipboardContent content = new FsClipboardContent(FsClipboardContent.COPY, files); |
| final FsClipboardTransfer transfer = FsClipboardTransfer.getInstance(); |
| transfer.setContent(content); |
| |
| Runnable runnable = new Runnable() { |
| @Override |
| public void run() { |
| clipboard.setContents(new Object[] { content }, new Transfer[] { transfer }); |
| |
| PropertyChangeEvent event = new PropertyChangeEvent(this, "copy", null, null); //$NON-NLS-1$ |
| firePropertyChange(event); |
| } |
| }; |
| |
| exec(runnable); |
| } |
| |
| /** |
| * Clear the clip board. |
| */ |
| public void clear() { |
| Runnable runnable = new Runnable() { |
| @Override |
| public void run() { |
| clipboard.clearContents(); |
| |
| PropertyChangeEvent event = new PropertyChangeEvent(this, "clear", null, null); //$NON-NLS-1$ |
| firePropertyChange(event); |
| } |
| }; |
| |
| exec(runnable); |
| } |
| |
| /** |
| * Executes the given runnable in the UI thread synchronously. |
| * |
| * @param runnable The runnable. Must not be <code>null</code>. |
| */ |
| private void exec(Runnable runnable) { |
| Assert.isNotNull(runnable); |
| |
| if (Display.getCurrent() != null) { |
| runnable.run(); |
| } else { |
| DisplayUtil.safeSyncExec(runnable); |
| } |
| } |
| |
| /** |
| * Dispose the clip board. |
| */ |
| public void dispose() { |
| Runnable runnable = new Runnable() { |
| @Override |
| public void run() { |
| if (!clipboard.isDisposed()) { |
| try { clipboard.dispose(); } catch (SWTException e) {} |
| } |
| } |
| }; |
| |
| exec(runnable); |
| } |
| |
| /** |
| * Get the system clip board. |
| * |
| * @return The system clip board. |
| */ |
| public final Clipboard getSystemClipboard() { |
| return clipboard; |
| } |
| } |