/*
* Copyright 2010 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.drools.guvnor.client.explorer;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import org.drools.guvnor.client.common.LoadingPopup;
import org.drools.guvnor.client.packages.PackageEditor;
import org.drools.guvnor.client.ruleeditor.GuvnorEditor;
import org.drools.guvnor.client.util.ScrollTabLayoutPanel;
import com.google.gwt.dom.client.Style.Unit;
import com.google.gwt.event.logical.shared.CloseEvent;
import com.google.gwt.event.logical.shared.CloseHandler;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.Panel;
import com.google.gwt.user.client.ui.ScrollPanel;
import com.google.gwt.user.client.ui.Widget;
/**
* This is the tab panel manager.
* @author Fernando Meyer, Michael Neale
*/
public class ExplorerViewCenterPanel extends Composite {
private final ScrollTabLayoutPanel tabLayoutPanel;
private MultiKeyMap<Panel> openedTabs = new MultiKeyMap<Panel>();
private static int id = 0;
/** to keep track of what is dirty, filthy */
private Map<String, GuvnorEditor> openedAssetEditors = new HashMap<String, GuvnorEditor>();
private Map<String, PackageEditor> openedPackageEditors = new HashMap<String, PackageEditor>();
private Map<Panel, String[]> itemWidgets = new HashMap<Panel, String[]>();
public ExplorerViewCenterPanel() {
tabLayoutPanel = new ScrollTabLayoutPanel( 2,
Unit.EM );
initWidget( tabLayoutPanel );
}
/**
* Add a new tab. Should only do this if have checked showIfOpen to avoid dupes being opened.
* @param tabname The displayed tab name.
* @param widget The contents.
* @param key A key which is unique.
*/
public void addTab(final String tabname,
Widget widget,
final String key) {
addTab( tabname,
widget,
new String[]{key} );
}
/**
* Add a new tab. Should only do this if have checked showIfOpen to avoid dupes being opened.
* @param tabname The displayed tab name.
* @param widget The contents.
* @param keys An array of keys which are unique.
*/
public void addTab(final String tabname,
Widget widget,
final String[] keys) {
final String panelId = (keys.length == 1 ? keys[0] + id++ : Arrays.toString( keys ) + id++);
ScrollPanel localTP = new ScrollPanel();
localTP.add( widget );
tabLayoutPanel.add( localTP,
newClosableLabel( localTP,
tabname ) );
tabLayoutPanel.selectTab( localTP );
//TODO: Dirtyable
/* localTP.ad( new PanelListenerAdapter() {
public void onDestroy(Component component) {
Panel p = openedTabs.remove( keys );
if ( p != null ) {
p.destroy();
}
openedAssetEditors.remove( panelId );
openedPackageEditors.remove( tabname );
}
} );
*/
if ( widget instanceof GuvnorEditor ) {
this.openedAssetEditors.put( panelId,
(GuvnorEditor) widget );
} else if ( widget instanceof PackageEditor ) {
this.getOpenedPackageEditors().put( tabname,
(PackageEditor) widget );
}
openedTabs.put( keys,
localTP );
itemWidgets.put( localTP,
keys );
}
private Widget newClosableLabel(final Panel panel,
final String title) {
ClosableLabel closableLabel = new ClosableLabel( title );
closableLabel.addCloseHandler( new CloseHandler<ClosableLabel>() {
public void onClose(CloseEvent<ClosableLabel> event) {
int widgetIndex = tabLayoutPanel.getWidgetIndex( panel );
if ( widgetIndex == tabLayoutPanel.getSelectedIndex() ) {
if ( isOnlyOneTabLeft() ) {
tabLayoutPanel.clear();
} else {
tabLayoutPanel.selectTab( widgetIndex - 1 );
}
}
tabLayoutPanel.remove( widgetIndex );
String[] keys = itemWidgets.remove( panel );
openedTabs.remove( keys );
}
private boolean isOnlyOneTabLeft() {
return tabLayoutPanel.getWidgetCount() == 1;
}
} );
return closableLabel;
}
/**
* Will open if existing. If not it will return false;
*/
public boolean showIfOpen(String key) {
if ( openedTabs.containsKey( key ) ) {
LoadingPopup.close();
Panel tpi = (Panel) openedTabs.get( key );
tabLayoutPanel.selectTab( tpi );
return true;
}
return false;
}
public void close(String key) {
Panel tpi = openedTabs.remove( key );
int widgetIndex = tabLayoutPanel.getWidgetIndex( tpi );
if ( widgetIndex == tabLayoutPanel.getSelectedIndex() ) {
tabLayoutPanel.selectTab( widgetIndex - 1 );
}
tabLayoutPanel.remove( widgetIndex );
itemWidgets.remove( tpi );
}
public Map<String, PackageEditor> getOpenedPackageEditors() {
return openedPackageEditors;
}
}