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Diffstat (limited to 'bundles/org.eclipse.wst.jsdt.ui/src/org/eclipse/wst/jsdt/internal/ui/dnd/DelegatingDragAdapter.java')
-rw-r--r--bundles/org.eclipse.wst.jsdt.ui/src/org/eclipse/wst/jsdt/internal/ui/dnd/DelegatingDragAdapter.java115
1 files changed, 0 insertions, 115 deletions
diff --git a/bundles/org.eclipse.wst.jsdt.ui/src/org/eclipse/wst/jsdt/internal/ui/dnd/DelegatingDragAdapter.java b/bundles/org.eclipse.wst.jsdt.ui/src/org/eclipse/wst/jsdt/internal/ui/dnd/DelegatingDragAdapter.java
deleted file mode 100644
index 013fc004..00000000
--- a/bundles/org.eclipse.wst.jsdt.ui/src/org/eclipse/wst/jsdt/internal/ui/dnd/DelegatingDragAdapter.java
+++ /dev/null
@@ -1,115 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2000, 2007 IBM Corporation 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:
- * IBM Corporation - initial API and implementation
- *******************************************************************************/
-package org.eclipse.wst.jsdt.internal.ui.dnd;
-
-import java.util.ArrayList;
-import java.util.Iterator;
-import java.util.List;
-
-import org.eclipse.core.runtime.Assert;
-import org.eclipse.jface.util.TransferDragSourceListener;
-import org.eclipse.swt.dnd.DragSource;
-import org.eclipse.swt.dnd.DragSourceEvent;
-import org.eclipse.swt.dnd.DragSourceListener;
-import org.eclipse.swt.dnd.Transfer;
-import org.eclipse.swt.dnd.TransferData;
-
-/**
- * A delegating drag adapter negotiates between a set of <code>TransferDragSourceListener</code>s
- * On <code>dragStart</code> the adapter determines the listener to be used for any further
- * <code>drag*</code> callback.
- */
-public class DelegatingDragAdapter implements DragSourceListener {
-
- private TransferDragSourceListener[] fPossibleListeners;
- private List fActiveListeners;
- private TransferDragSourceListener fFinishListener;
-
- public DelegatingDragAdapter(TransferDragSourceListener[] listeners) {
- setPossibleListeners(listeners);
- }
-
- protected void setPossibleListeners(TransferDragSourceListener[] listeners) {
- Assert.isNotNull(listeners);
- Assert.isTrue(fActiveListeners == null, "Can only set possible listeners before drag operation has started"); //$NON-NLS-1$
- fPossibleListeners= listeners;
- }
-
- /* non Java-doc
- * @see DragSourceListener
- */
- public void dragStart(DragSourceEvent event) {
- fFinishListener= null;
- boolean saveDoit= event.doit;
- Object saveData= event.data;
- boolean doIt= false;
- List transfers= new ArrayList(fPossibleListeners.length);
- fActiveListeners= new ArrayList(fPossibleListeners.length);
-
- for (int i= 0; i < fPossibleListeners.length; i++) {
- TransferDragSourceListener listener= fPossibleListeners[i];
- event.doit= saveDoit;
- listener.dragStart(event);
- if (event.doit) {
- transfers.add(listener.getTransfer());
- fActiveListeners.add(listener);
- }
- doIt= doIt || event.doit;
- }
- if (doIt) {
- ((DragSource)event.widget).setTransfer((Transfer[])transfers.toArray(new Transfer[transfers.size()]));
- }
- event.data= saveData;
- event.doit= doIt;
- }
-
- /* non Java-doc
- * @see DragSourceListener
- */
- public void dragSetData(DragSourceEvent event) {
- fFinishListener= getListener(event.dataType);
- if (fFinishListener != null)
- fFinishListener.dragSetData(event);
- }
-
- /* non Java-doc
- * @see DragSourceListener
- */
- public void dragFinished(DragSourceEvent event) {
- try{
- if (fFinishListener != null) {
- fFinishListener.dragFinished(event);
- } else {
- // If the user presses Escape then we get a dragFinished without
- // getting a dragSetData before.
- fFinishListener= getListener(event.dataType);
- if (fFinishListener != null)
- fFinishListener.dragFinished(event);
- }
- } finally{
- fFinishListener= null;
- fActiveListeners= null;
- }
- }
-
- private TransferDragSourceListener getListener(TransferData type) {
- if (type == null)
- return null;
-
- for (Iterator iter= fActiveListeners.iterator(); iter.hasNext();) {
- TransferDragSourceListener listener= (TransferDragSourceListener)iter.next();
- if (listener.getTransfer().isSupportedType(type)) {
- return listener;
- }
- }
- return null;
- }
-}

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