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/*******************************************************************************
* Copyright (c) 2000, 2009 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.swt.dnd;
import org.eclipse.swt.events.TypedEvent;
import org.eclipse.swt.widgets.Widget;
/**
* The DropTargetEvent contains the event information passed in the methods of the DropTargetListener.
*
* @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
*/
public class DropTargetEvent extends TypedEvent {
/**
* The x-cordinate of the cursor relative to the <code>Display</code>
*/
public int x;
/**
* The y-cordinate of the cursor relative to the <code>Display</code>
*/
public int y;
/**
* The operation being performed.
* @see DND#DROP_NONE
* @see DND#DROP_MOVE
* @see DND#DROP_COPY
* @see DND#DROP_LINK
* @see DND#DROP_DEFAULT
*/
public int detail;
/**
* A bitwise OR'ing of the operations that the DragSource can support
* (e.g. DND.DROP_MOVE | DND.DROP_COPY | DND.DROP_LINK).
* The detail value must be a member of this list or DND.DROP_NONE.
* @see DND#DROP_NONE
* @see DND#DROP_MOVE
* @see DND#DROP_COPY
* @see DND#DROP_LINK
* @see DND#DROP_DEFAULT
*/
public int operations;
/**
* A bitwise OR'ing of the drag under effect feedback to be displayed to the user
* (e.g. DND.FEEDBACK_SELECT | DND.FEEDBACK_SCROLL | DND.FEEDBACK_EXPAND).
* <p>A value of DND.FEEDBACK_NONE indicates that no drag under effect will be displayed.</p>
* <p>Feedback effects will only be applied if they are applicable.</p>
* <p>The default value is DND.FEEDBACK_SELECT.</p>
* @see DND#FEEDBACK_NONE
* @see DND#FEEDBACK_SELECT
* @see DND#FEEDBACK_INSERT_BEFORE
* @see DND#FEEDBACK_INSERT_AFTER
* @see DND#FEEDBACK_SCROLL
* @see DND#FEEDBACK_EXPAND
*/
public int feedback;
/**
* If the associated control is a table or tree, this field contains the item located
* at the cursor coordinates.
*/
public Widget item;
/**
* The type of data that will be dropped.
*/
public TransferData currentDataType;
/**
* A list of the types of data that the DragSource is capable of providing.
* The currentDataType must be a member of this list.
*/
public TransferData[] dataTypes;
static final long serialVersionUID = 3256727264573338678L;
/**
* Constructs a new instance of this class based on the
* information in the given untyped event.
*
* @param e the untyped event containing the information
*/
public DropTargetEvent(DNDEvent e) {
super(e);
this.data = e.data;
this.x = e.x;
this.y = e.y;
this.detail = e.detail;
this.currentDataType = e.dataType;
this.dataTypes = e.dataTypes;
this.operations = e.operations;
this.feedback = e.feedback;
this.item = e.item;
}
void updateEvent(DNDEvent e) {
e.widget = this.widget;
e.time = this.time;
e.data = this.data;
e.x = this.x;
e.y = this.y;
e.detail = this.detail;
e.dataType = this.currentDataType;
e.dataTypes = this.dataTypes;
e.operations = this.operations;
e.feedback = this.feedback;
e.item = this.item;
}
/**
* Returns a string containing a concise, human-readable
* description of the receiver.
*
* @return a string representation of the event
*/
public String toString() {
String string = super.toString ();
StringBuffer sb = new StringBuffer();
sb.append(string.substring (0, string.length() - 1)); // remove trailing '}'
sb.append(" x="); sb.append(x);
sb.append(" y="); sb.append(y);
sb.append(" item="); sb.append(item);
sb.append(" operations="); sb.append(operations);
sb.append(" operation="); sb.append(detail);
sb.append(" feedback="); sb.append(feedback);
sb.append(" dataTypes={ ");
if (dataTypes != null) {
for (int i = 0; i < dataTypes.length; i++) {
sb.append(dataTypes[i].type); sb.append(' ');
}
}
sb.append('}');
sb.append(" currentDataType="); sb.append(currentDataType != null ? currentDataType.type : '0');
sb.append('}');
return sb.toString();
}
}
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