/*******************************************************************************
* Copyright (c) 2012, 2013 Original authors 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:
* Original authors and others - initial API and implementation
******************************************************************************/
package org.eclipse.nebula.widgets.nattable.edit.action;
import org.eclipse.nebula.widgets.nattable.NatTable;
import org.eclipse.nebula.widgets.nattable.edit.command.EditCellCommand;
import org.eclipse.nebula.widgets.nattable.selection.action.CellSelectionDragMode;
import org.eclipse.swt.events.MouseEvent;
/**
* Specialisation of CellSelectionDragMode that is used in the context of
* editing. If a drag&drop operation is executed on the same cell, the
* corresponding editor will be activated, just as if you performed a click into
* that cell.
* <p>
* This is needed to treat minimal (not intended) drag&drop operations like
* clicks. It sometimes happens that on performing a click, the mouse moves a
* bit. So between mouseDown and mouseUp there is a movement registered, so it
* is not interpreted as a click anymore, but as a drag&drop operation. With
* this implementation registered the described behaviour is avoided.
*/
public class CellEditDragMode extends CellSelectionDragMode {
private int originalColumnPosition;
private int originalRowPosition;
@Override
public void mouseDown(NatTable natTable, MouseEvent event) {
super.mouseDown(natTable, event);
originalColumnPosition = natTable.getColumnPositionByX(event.x);
originalRowPosition = natTable.getRowPositionByY(event.y);
}
@Override
public void mouseMove(NatTable natTable, MouseEvent event) {
super.mouseMove(natTable, event);
int columnPosition = natTable.getColumnPositionByX(event.x);
int rowPosition = natTable.getRowPositionByY(event.y);
if (columnPosition != originalColumnPosition
|| rowPosition != originalRowPosition) {
// Left original cell, cancel edit
originalColumnPosition = -1;
originalRowPosition = -1;
}
}
@Override
public void mouseUp(NatTable natTable, MouseEvent event) {
super.mouseUp(natTable, event);
int columnPosition = natTable.getColumnPositionByX(event.x);
int rowPosition = natTable.getRowPositionByY(event.y);
if (columnPosition == originalColumnPosition
&& rowPosition == originalRowPosition) {
natTable.doCommand(new EditCellCommand(natTable, natTable
.getConfigRegistry(), natTable.getCellByPosition(
columnPosition, rowPosition)));
}
}
}