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

diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/dnd/BasicSelectionTransferDragAdapter.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/dnd/BasicSelectionTransferDragAdapter.java
new file mode 100644
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--- /dev/null
+++ b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/ui/dnd/BasicSelectionTransferDragAdapter.java
@@ -0,0 +1,88 @@
+/*******************************************************************************
+ * 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;
+
+//incastrix
+//import org.eclipse.jface.text.Assert;
+import org.eclipse.core.runtime.Assert;
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.jface.viewers.ISelectionProvider;
+import org.eclipse.swt.dnd.DND;
+import org.eclipse.swt.dnd.DragSourceAdapter;
+import org.eclipse.swt.dnd.DragSourceEvent;
+import org.eclipse.swt.dnd.Transfer;
+
+public class BasicSelectionTransferDragAdapter extends DragSourceAdapter
+		implements TransferDragSourceListener {
+
+	private ISelectionProvider fProvider;
+
+	public BasicSelectionTransferDragAdapter(ISelectionProvider provider) {
+		Assert.isNotNull(provider);
+		fProvider = provider;
+	}
+
+	/**
+	 * @see TransferDragSourceListener#getTransfer
+	 */
+	public Transfer getTransfer() {
+		return LocalSelectionTransfer.getInstance();
+	}
+
+	/*
+	 * non Java-doc
+	 * 
+	 * @see org.eclipse.swt.dnd.DragSourceListener#dragStart
+	 */
+	public void dragStart(DragSourceEvent event) {
+		ISelection selection = fProvider.getSelection();
+		LocalSelectionTransfer.getInstance().setSelection(selection);
+		LocalSelectionTransfer.getInstance().setSelectionSetTime(event.time);
+		event.doit = isDragable(selection);
+	}
+
+	/**
+	 * Checks if the elements contained in the given selection can be dragged.
+	 * <p>
+	 * Subclasses may override.
+	 * 
+	 * @param selection
+	 *            containing the elements to be dragged
+	 */
+	protected boolean isDragable(ISelection selection) {
+		return true;
+	}
+
+	/*
+	 * non Java-doc
+	 * 
+	 * @see org.eclipse.swt.dnd.DragSourceListener#dragSetData
+	 */
+	public void dragSetData(DragSourceEvent event) {
+		// For consistency set the data to the selection even though
+		// the selection is provided by the LocalSelectionTransfer
+		// to the drop target adapter.
+		event.data = LocalSelectionTransfer.getInstance().getSelection();
+	}
+
+	/*
+	 * non Java-doc
+	 * 
+	 * @see org.eclipse.swt.dnd.DragSourceListener#dragFinished
+	 */
+	public void dragFinished(DragSourceEvent event) {
+		// We assume that the drop target listener has done all
+		// the work.
+		Assert.isTrue(event.detail == DND.DROP_NONE);
+		LocalSelectionTransfer.getInstance().setSelection(null);
+		LocalSelectionTransfer.getInstance().setSelectionSetTime(0);
+	}
+}