org.eclipse.swt.dnd.DropTargetEvent Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2009, 2012 Innoopract Informationssysteme GmbH 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:
* Innoopract - initial implementation
* EclipseSource - ongoing development
******************************************************************************/
package org.eclipse.swt.dnd;
import org.eclipse.swt.events.TypedEvent;
import org.eclipse.swt.internal.dnd.DNDEvent;
import org.eclipse.swt.widgets.Widget;
/**
* The DropTargetEvent contains the event information passed in the methods of
* the DropTargetListener.
*
* @since 1.3
*/
public class DropTargetEvent extends TypedEvent {
private static final long serialVersionUID = 1L;
/**
* The x-cordinate of the cursor relative to the Display
*/
public int x;
/**
* The y-cordinate of the cursor relative to the Display
*/
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).
*
* A value of DND.FEEDBACK_NONE indicates that no drag under effect will be
* displayed.
*
*
* Feedback effects will only be applied if they are applicable.
*
*
* The default value is DND.FEEDBACK_SELECT.
*
*
* @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;
/**
* Constructs a new instance of this class based on the
* information in the given untyped event.
*
* @param e the untyped event containing the information
* @since 2.0
*/
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;
}
@Override
public String toString() {
String string = super.toString();
StringBuilder sb = new StringBuilder();
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();
}
}