1 files changed, 110 insertions, 0 deletions
diff --git a/target_explorer/plugins/org.eclipse.tcf.te.tcf.filesystem.ui/src/org/eclipse/tcf/te/tcf/filesystem/ui/internal/testers/ClipboardPropertyTester.java b/target_explorer/plugins/org.eclipse.tcf.te.tcf.filesystem.ui/src/org/eclipse/tcf/te/tcf/filesystem/ui/internal/testers/ClipboardPropertyTester.java
new file mode 100644
index 000000000..d300f4a0f
--- /dev/null
+++ b/target_explorer/plugins/org.eclipse.tcf.te.tcf.filesystem.ui/src/org/eclipse/tcf/te/tcf/filesystem/ui/internal/testers/ClipboardPropertyTester.java
@@ -0,0 +1,110 @@
+/*******************************************************************************
+ * Copyright (c) 2011 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.testers;
+
+import java.util.List;
+
+import org.eclipse.core.expressions.PropertyTester;
+import org.eclipse.core.runtime.Assert;
+import org.eclipse.jface.viewers.IStructuredSelection;
+import org.eclipse.swt.dnd.Clipboard;
+import org.eclipse.swt.dnd.FileTransfer;
+import org.eclipse.tcf.te.tcf.filesystem.core.model.FSTreeNode;
+import org.eclipse.tcf.te.tcf.filesystem.ui.activator.UIPlugin;
+import org.eclipse.tcf.te.tcf.filesystem.ui.internal.operations.FsClipboard;
+/**
+ * Provide a tester to test if the paste operation is enabled.
+ */
+public class ClipboardPropertyTester extends PropertyTester {
+
+	/**
+	 * Create an instance.
+	 */
+	public ClipboardPropertyTester() {
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see org.eclipse.core.expressions.IPropertyTester#test(java.lang.Object, java.lang.String, java.lang.Object[], java.lang.Object)
+	 */
+	@Override
+	public boolean test(Object receiver, String property, Object[] args, Object expectedValue) {
+		Assert.isTrue(receiver instanceof IStructuredSelection);
+		if (property.equals("canPaste")) { //$NON-NLS-1$
+			FsClipboard cb = UIPlugin.getClipboard();
+			Clipboard clipboard = cb.getSystemClipboard();
+			Object contents = clipboard.getContents(FileTransfer.getInstance());
+			if(contents != null) {
+				List<FSTreeNode> selection = ((IStructuredSelection) receiver).toList();
+				FSTreeNode hovered = null;
+				Assert.isTrue(!selection.isEmpty());
+				if (selection.size() == 1) {
+					FSTreeNode node = selection.get(0);
+					if (node.isFile()) {
+						hovered = node.parent;
+					}
+					else {
+						hovered = node;
+					}
+				}
+				else {
+					for (FSTreeNode node : selection) {
+						if (hovered == null) hovered = node.parent;
+						else if (hovered != node.parent) return false;
+					}
+				}
+				if (hovered.isDirectory() && hovered.isWritable()) {
+					return true;
+				}
+				return false;
+			} 
+			else if (!cb.isEmpty()) {
+				List<FSTreeNode> nodes = cb.getFiles();
+				boolean moving = cb.isCutOp();
+				boolean copying = cb.isCopyOp();
+				List<FSTreeNode> selection = ((IStructuredSelection) receiver).toList();
+				FSTreeNode hovered = null;
+				Assert.isTrue(!selection.isEmpty());
+				if (selection.size() == 1) {
+					FSTreeNode node = selection.get(0);
+					if (node.isDirectory() && moving) {
+						hovered = node;
+					}
+					else if (node.isRoot()) {
+						hovered = node;
+					}
+					else {
+						hovered = node.parent;
+					}
+				}
+				else {
+					for (FSTreeNode node : selection) {
+						if (hovered == null) hovered = node.parent;
+						else if (hovered != node.parent) return false;
+					}
+				}
+				if (hovered.isDirectory() && hovered.isWritable() && (moving || copying)) {
+					FSTreeNode head = nodes.get(0);
+					String hid = head.peerNode.getPeerId();
+					String tid = hovered.peerNode.getPeerId();
+					if (hid.equals(tid)) {
+						for (FSTreeNode node : nodes) {
+							if (moving && node.parent == hovered || node.isAncestorOf(hovered)) {
+								return false;
+							}
+						}
+						return true;
+					}
+				}
+			}
+		}
+		return false;
+	}
+}