X-Git-Url: http://secure.phpeclipse.com

diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/dnd/LocalSelectionTransfer.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/dnd/LocalSelectionTransfer.java
new file mode 100644
index 0000000..6a870fd
--- /dev/null
+++ b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/dnd/LocalSelectionTransfer.java
@@ -0,0 +1,104 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2003 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials 
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ * 
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package net.sourceforge.phpdt.internal.ui.dnd;
+
+import net.sourceforge.phpdt.internal.ui.PHPUIMessages;
+import net.sourceforge.phpeclipse.PHPeclipsePlugin;
+
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.swt.dnd.ByteArrayTransfer;
+import org.eclipse.swt.dnd.TransferData;
+
+public class LocalSelectionTransfer extends ByteArrayTransfer {
+
+	// First attempt to create a UUID for the type name to make sure that
+	// different Eclipse applications use different "types" of
+	// <code>LocalSelectionTransfer</code>
+	private static final String TYPE_NAME = "local-selection-transfer-format" + (new Long(System.currentTimeMillis())).toString(); //$NON-NLS-1$;
+
+	private static final int TYPEID = registerType(TYPE_NAME);
+
+	private static final LocalSelectionTransfer INSTANCE = new LocalSelectionTransfer();
+
+	private ISelection fSelection;
+
+	private int fSelectionSetTime;
+
+	private LocalSelectionTransfer() {
+	}
+
+	/**
+	 * Returns the singleton.
+	 */
+	public static LocalSelectionTransfer getInstance() {
+		return INSTANCE;
+	}
+
+	/**
+	 * Sets the transfer data for local use.
+	 */
+	public void setSelection(ISelection s) {
+		fSelection = s;
+	}
+
+	/**
+	 * Returns the local transfer data.
+	 */
+	public ISelection getSelection() {
+		return fSelection;
+	}
+
+	public void javaToNative(Object object, TransferData transferData) {
+		// No encoding needed since this is a hardcoded string read and written
+		// in the same process.
+		// See nativeToJava below
+		byte[] check = TYPE_NAME.getBytes();
+		super.javaToNative(check, transferData);
+	}
+
+	public Object nativeToJava(TransferData transferData) {
+		Object result = super.nativeToJava(transferData);
+		if (isInvalidNativeType(result)) {
+			PHPeclipsePlugin.log(IStatus.ERROR, PHPUIMessages
+					.getString("LocalSelectionTransfer.errorMessage")); //$NON-NLS-1$
+		}
+		return fSelection;
+	}
+
+	private boolean isInvalidNativeType(Object result) {
+		// No encoding needed since this is a hardcoded string read and written
+		// in the same process.
+		// See javaToNative above
+		return !(result instanceof byte[])
+				|| !TYPE_NAME.equals(new String((byte[]) result));
+	}
+
+	/**
+	 * The type id used to identify this transfer.
+	 */
+	protected int[] getTypeIds() {
+		return new int[] { TYPEID };
+	}
+
+	protected String[] getTypeNames() {
+		return new String[] { TYPE_NAME };
+	}
+
+	public int getSelectionSetTime() {
+		return fSelectionSetTime;
+	}
+
+	public void setSelectionSetTime(int time) {
+		fSelectionSetTime = time;
+	}
+
+}