/*
* Copyright 2011 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.decisiontable.cells;
import com.google.gwt.core.client.Scheduler;
import com.google.gwt.core.client.Scheduler.ScheduledCommand;
import com.google.gwt.dom.client.Element;
import com.google.gwt.event.dom.client.KeyCodes;
import com.google.gwt.event.dom.client.KeyDownEvent;
import com.google.gwt.event.dom.client.KeyDownHandler;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.user.client.ui.PopupPanel.PositionCallback;
import com.google.gwt.user.client.ui.TextBox;
/**
* A Popup Text Editor.
*/
public class PopupTextEditCell extends AbstractPopupEditCell<String, String> {
private final TextBox textBox;
public PopupTextEditCell() {
super();
this.textBox = new TextBox();
// Tabbing out of the TextBox commits changes
textBox.addKeyDownHandler( new KeyDownHandler() {
public void onKeyDown(KeyDownEvent event) {
boolean keyTab = event.getNativeKeyCode() == KeyCodes.KEY_TAB;
boolean keyEnter = event.getNativeKeyCode() == KeyCodes.KEY_ENTER;
if ( keyTab
|| keyEnter ) {
commit();
}
}
} );
vPanel.add( textBox );
}
@Override
public void render(Context context,
String value,
SafeHtmlBuilder sb) {
if ( value != null ) {
sb.append( renderer.render( value ) );
}
}
// Commit the change
@Override
protected void commit() {
// Update values
String text = textBox.getValue();
if ( text.length() == 0 ) {
text = null;
}
setValue( lastContext,
lastParent,
text );
if ( valueUpdater != null ) {
valueUpdater.update( text );
}
panel.hide();
}
// Start editing the cell
@Override
protected void startEditing(final Context context,
final Element parent,
String value) {
textBox.setValue( value );
panel.setPopupPositionAndShow( new PositionCallback() {
public void setPosition(int offsetWidth,
int offsetHeight) {
panel.setPopupPosition( parent.getAbsoluteLeft()
+ offsetX,
parent.getAbsoluteTop()
+ offsetY );
// Focus the first enabled control
Scheduler.get().scheduleDeferred( new ScheduledCommand() {
public void execute() {
String text = textBox.getValue();
textBox.setFocus( true );
textBox.setCursorPos( text.length() );
textBox.setSelectionRange( 0,
text.length() );
}
} );
}
} );
}
}