1) Moved net.sourceforge.phpeclipse.ui\src\net\sourceforge\phpdt back to net.sourcefo...

[phpeclipse.git] / net.sourceforge.phpeclipse / src / net / sourceforge / phpdt / internal / ui / dnd / BasicSelectionTransferDragAdapter.java

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 (file)
index 0000000..6fc322a
--- /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);
+       }
+}