/*
* Copyright 2005 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.ruleeditor;
import java.util.List;
import org.drools.guvnor.client.messages.Constants;
import org.drools.ide.common.client.modeldriven.brl.DSLSentence;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.BlurEvent;
import com.google.gwt.event.dom.client.BlurHandler;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.dom.client.FocusEvent;
import com.google.gwt.event.dom.client.FocusHandler;
import com.google.gwt.event.dom.client.KeyCodes;
import com.google.gwt.event.dom.client.KeyUpEvent;
import com.google.gwt.event.dom.client.KeyUpHandler;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.ListBox;
import com.google.gwt.user.client.ui.PopupPanel;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.VerticalPanel;
/**
* This is a popup list for "content assistance" - although on the web,
* its not assistance - its mandatory ;)
*/
public class ChoiceList extends PopupPanel {
private ListBox list;
private final DSLSentence[] sentences;
private HorizontalPanel buttons;
private TextBox filter;
private Constants constants = ((Constants) GWT.create( Constants.class ));
/**
* Pass in a list of suggestions for the popup lists.
* Set a click listener to get notified when the OK button is clicked.
*/
public ChoiceList(final DSLSentence[] sen,
final DSLRuleEditor self) {
super( true );
setGlassEnabled( true );
this.sentences = sen;
filter = new TextBox();
filter.setWidth( "100%" );
final String defaultMessage = constants.enterTextToFilterList();
filter.setText( defaultMessage );
filter.addFocusHandler( new FocusHandler() {
public void onFocus(FocusEvent event) {
filter.setText( "" );
}
} );
filter.addBlurHandler( new BlurHandler() {
public void onBlur(BlurEvent event) {
filter.setText( defaultMessage );
}
} );
filter.addKeyUpHandler( new KeyUpHandler() {
public void onKeyUp(KeyUpEvent event) {
if ( event.getNativeKeyCode() == KeyCodes.KEY_ENTER ) {
applyChoice( self );
} else {
populateList( ListUtil.filter( sentences,
filter.getText() ) );
}
}
} );
filter.setFocus( true );
VerticalPanel panel = new VerticalPanel();
panel.add( filter );
list = new ListBox();
list.setVisibleItemCount( 5 );
populateList( ListUtil.filter( this.sentences,
"" ) );
panel.add( list );
Button ok = new Button( constants.OK() );
ok.addClickHandler( new ClickHandler() {
public void onClick(ClickEvent event) {
applyChoice( self );
}
} );
Button cancel = new Button( constants.Cancel() );
cancel.addClickHandler( new ClickHandler() {
public void onClick(ClickEvent event) {
hide();
}
} );
buttons = new HorizontalPanel();
buttons.add( ok );
buttons.add( cancel );
panel.add( buttons );
add( panel );
setStyleName( "ks-popups-Popup" ); //NON-NLS
}
private void applyChoice(final DSLRuleEditor self) {
self.insertText( getSelectedItem() );
hide();
}
private void populateList(List<DSLSentence> filtered) {
list.clear();
for ( int i = 0; i < filtered.size(); i++ ) {
list.addItem( ((DSLSentence) filtered.get( i )).getDefinition() );
}
}
public String getSelectedItem() {
return list.getItemText( list.getSelectedIndex() );
}
}