/*
* Copyright 2012 JBoss Inc
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package org.uberfire.client.workbench.panels.impl;
import javax.enterprise.context.Dependent;
import com.google.gwt.core.client.Scheduler;
import com.google.gwt.core.client.Scheduler.ScheduledCommand;
import com.google.gwt.user.client.ui.RequiresResize;
import com.google.gwt.user.client.ui.ResizeComposite;
import com.google.gwt.user.client.ui.SimpleLayoutPanel;
import com.google.gwt.user.client.ui.Widget;
import org.uberfire.client.workbench.panels.SplitPanel;
import org.uberfire.client.workbench.panels.WorkbenchPanelView;
import org.uberfire.client.workbench.widgets.split.WorkbenchSplitLayoutPanel;
import org.uberfire.workbench.model.PanelDefinition;
import org.uberfire.workbench.model.Position;
/**
* A split panel to contain WorkbenchPanels split horizontally.
*/
@Dependent
public class HorizontalSplitterPanel extends ResizeComposite
implements
SplitPanel {
WorkbenchSplitLayoutPanel slp = new WorkbenchSplitLayoutPanel();
SimpleLayoutPanel eastWidgetContainer = new SimpleLayoutPanel();
SimpleLayoutPanel westWidgetContainer = new SimpleLayoutPanel();
public HorizontalSplitterPanel() {
initWidget( getSlp() );
}
@Override
public void setup( final WorkbenchPanelView eastWidget,
final WorkbenchPanelView westWidget,
final Position position,
final Integer preferredSize,
final Integer preferredMinSize ) {
final int size = assertSize( preferredSize );
final int minSize = assertMinimumSize( preferredMinSize );
switch ( position ) {
case EAST:
final int eastChildSize = getChildSize( eastWidget.getPresenter().getDefinition() );
getSlp().addEast( eastWidgetContainer,
size + eastChildSize );
getSlp().add( westWidgetContainer );
break;
case WEST:
final int westChildSize = getChildSize( westWidget.getPresenter().getDefinition() );
getSlp().addWest( westWidgetContainer,
size + westChildSize );
getSlp().add( eastWidgetContainer );
break;
default:
throw new IllegalArgumentException( "position must be either EAST or WEST" );
}
getSlp().setWidgetMinSize( eastWidgetContainer,
minSize );
getSlp().setWidgetMinSize( westWidgetContainer,
minSize );
westWidgetContainer.setWidget( westWidget );
eastWidgetContainer.setWidget( eastWidget );
scheduleResize( getSlp() );
}
WorkbenchSplitLayoutPanel getSlp() {
return slp;
}
@Override
public void clear() {
getSlp().clear();
}
@Override
public Widget getWidget( Position position ) {
switch ( position ) {
case EAST:
return this.westWidgetContainer.getWidget();
case WEST:
return this.eastWidgetContainer.getWidget();
default:
throw new IllegalArgumentException( "position must be either EAST or WEST" );
}
}
@Override
public void onResize() {
//It is possible that the SplitterPanel is removed from the DOM before the resize is called
if ( isAttached() ) {
final Widget parent = getParent();
setPixelSize( parent.getOffsetWidth(),
parent.getOffsetHeight() );
super.onResize();
}
}
private int assertSize( final Integer size ) {
return ( size == null ? DEFAULT_SIZE : size );
}
private int assertMinimumSize( final Integer minSize ) {
return ( minSize == null ? DEFAULT_MIN_SIZE : minSize );
}
int getChildSize( final PanelDefinition panel ) {
int childSize = 0;
final PanelDefinition eastPanel = panel.getChild( Position.EAST );
final PanelDefinition westPanel = panel.getChild( Position.WEST );
if ( eastPanel != null ) {
childSize = childSize + assertSize( eastPanel.getWidth() ) + getChildSize( eastPanel );
}
if ( westPanel != null ) {
childSize = childSize + assertSize( westPanel.getWidth() ) + getChildSize( westPanel );
}
return childSize;
}
private void scheduleResize( final Widget widget ) {
if ( widget instanceof RequiresResize ) {
final RequiresResize requiresResize = (RequiresResize) widget;
Scheduler.get().scheduleDeferred( new ScheduledCommand() {
@Override
public void execute() {
requiresResize.onResize();
}
} );
}
}
}