/*******************************************************************************
* This file is part of OpenNMS(R).
*
* Copyright (C) 2010-2011 The OpenNMS Group, Inc.
* OpenNMS(R) is Copyright (C) 1999-2011 The OpenNMS Group, Inc.
*
* OpenNMS(R) is a registered trademark of The OpenNMS Group, Inc.
*
* OpenNMS(R) is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published
* by the Free Software Foundation, either version 3 of the License,
* or (at your option) any later version.
*
* OpenNMS(R) is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with OpenNMS(R). If not, see:
* http://www.gnu.org/licenses/
*
* For more information contact:
* OpenNMS(R) Licensing <license@opennms.org>
* http://www.opennms.org/
* http://www.opennms.com/
*******************************************************************************/
package org.opennms.features.dashboard.client.dnd;
import com.google.gwt.user.client.ui.AbsolutePanel;
import com.google.gwt.user.client.ui.Widget;
import com.allen_sauer.gwt.dnd.client.AbstractDragController;
import com.allen_sauer.gwt.dnd.client.drop.BoundaryDropController;
import java.util.HashMap;
import org.opennms.features.dashboard.client.portlet.AbsPopup;
import org.opennms.features.dashboard.client.portlet.DirectionConstant;
import org.opennms.features.dashboard.client.portlet.IBasicPortlet;
/**
* author: Tharindu Munasinghe (tharindumunasinghe@gmail.com)
* org.opennms.features.dashboard
*/
public final class ResizeDragController extends AbstractDragController {
private static final int MIN_WIDGET_SIZE = 50;
private HashMap<Widget, DirectionConstant> directionMap = new HashMap<Widget, DirectionConstant>();
private IBasicPortlet portlet = null;
public ResizeDragController(AbsolutePanel boundaryPanel) {
super(boundaryPanel);
}
@Override
public void dragMove() {
int direction = ((ResizeDragController) context.dragController).getDirection(context.draggable).directionBits;
if ((direction & AbsPopup.DIRECTION_SOUTH) != 0) {
int delta = context.desiredDraggableY
- context.draggable.getAbsoluteTop();
if (delta != 0 && (portlet.getContentHeight() + delta) > 0) {
portlet.setContentSize(portlet.getContentWidth(),
portlet.getContentHeight()
+ delta);
}
}
if ((direction & AbsPopup.DIRECTION_EAST) != 0) {
int delta = context.desiredDraggableX
- context.draggable.getAbsoluteLeft();
if (delta != 0 && (portlet.getContentWidth() + delta) > 0) {
portlet.setContentSize(portlet.getContentWidth()
+ delta, portlet.getContentHeight());
}
}
}
@Override
public void dragStart() {
super.dragStart();
portlet = (IBasicPortlet) context.draggable.getParent().getParent();
}
public void makeDraggable(Widget widget, DirectionConstant direction) {
super.makeDraggable(widget);
directionMap.put(widget, direction);
}
protected BoundaryDropController newBoundaryDropController(
AbsolutePanel boundaryPanel, boolean allowDroppingOnBoundaryPanel) {
if (allowDroppingOnBoundaryPanel) {
throw new IllegalArgumentException();
}
return new BoundaryDropController(boundaryPanel, false);
}
private DirectionConstant getDirection(Widget draggable) {
return directionMap.get(draggable);
}
}