/*
* 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.modeldriven.ui;
import org.drools.guvnor.client.common.ClickableLabel;
import org.drools.guvnor.client.common.DirtyableFlexTable;
import org.drools.guvnor.client.common.DirtyableHorizontalPane;
import org.drools.guvnor.client.common.FormStylePopup;
import org.drools.guvnor.client.common.ImageButton;
import org.drools.guvnor.client.messages.Constants;
import org.drools.guvnor.client.modeldriven.HumanReadable;
import org.drools.guvnor.client.resources.Images;
import org.drools.ide.common.client.modeldriven.SuggestionCompletionEngine;
import org.drools.ide.common.client.modeldriven.brl.FactPattern;
import org.drools.ide.common.client.modeldriven.brl.FromCompositeFactPattern;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ChangeEvent;
import com.google.gwt.event.dom.client.ChangeHandler;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.ListBox;
import com.google.gwt.user.client.ui.Widget;
public class FromCompositeFactPatternWidget extends RuleModellerWidget {
protected Constants constants = ((Constants) GWT.create( Constants.class ));
private static Images images = GWT.create( Images.class );
protected FromCompositeFactPattern pattern;
protected DirtyableFlexTable layout;
protected boolean readOnly;
private FactPatternWidget factPatternWidget;
private ExpressionBuilder expressionBuilder;
public FromCompositeFactPatternWidget(RuleModeller modeller, FromCompositeFactPattern pattern) {
this( modeller, pattern, null );
}
public FromCompositeFactPatternWidget(RuleModeller modeller, FromCompositeFactPattern pattern, Boolean readOnly) {
super( modeller );
this.pattern = pattern;
//if readOnly is null, the readOnly attribute is calculated.
if ( readOnly == null ) {
this.calculateReadOnly();
} else {
this.readOnly = readOnly;
}
this.layout = new DirtyableFlexTable();
if ( this.readOnly ) {
this.layout.addStyleName( "editor-disabled-widget" );
}
this.layout.addStyleName( "model-builderInner-Background" );
doLayout();
initWidget( layout );
}
protected void doLayout() {
int row = 0;
if ( pattern.getFactPattern() != null ) {
FactPattern fact = pattern.getFactPattern();
if ( fact != null ) {
this.layout.setWidget( row++, 0, createFactPatternWidget( fact ) );
}
}
this.layout.setWidget( row++, 0, getCompositeLabel() );
}
private Widget createFactPatternWidget(FactPattern fact) {
if ( this.readOnly ) {
//creates a new read-only FactPatternWidget
this.factPatternWidget = new FactPatternWidget( this.getModeller(), fact, false, true );
//this.layout.setWidget( 0, 0, factPatternWidget );
return this.factPatternWidget;
} else {
this.factPatternWidget = new FactPatternWidget( this.getModeller(), fact, true, false );
this.factPatternWidget.addOnModifiedCommand( new Command() {
public void execute() {
setModified( true );
}
} );
//this.layout.setWidget( 0, 0, addRemoveButton( factPatternWidget, createClickHandlerForAddRemoveButton() ) );
return addRemoveButton( factPatternWidget, createClickHandlerForAddRemoveButton() );
}
}
private ClickHandler createClickHandlerForAddRemoveButton() {
return new ClickHandler() {
public void onClick(ClickEvent event) {
if ( Window.confirm( constants.RemoveThisEntireConditionQ() ) ) {
setModified( true );
pattern.setFactPattern( null );
getModeller().refreshWidget();
}
}
};
}
protected Widget getCompositeLabel() {
ClickHandler click = new ClickHandler() {
public void onClick(ClickEvent event) {
Widget w = (Widget) event.getSource();
showFactTypeSelector( w );
}
};
String lbl = "<div class='form-field'>" + HumanReadable.getCEDisplayName( "from" ) + "</div>";
DirtyableFlexTable panel = new DirtyableFlexTable();
int r = 0;
if ( pattern.getFactPattern() == null ) {
panel.setWidget( r, 0, new ClickableLabel( "<br> <font color='red'>" + constants.clickToAddPatterns() + "</font>", click, !this.readOnly ) );
r++;
}
panel.setWidget( r, 0, new HTML( lbl ) );
this.expressionBuilder = new ExpressionBuilder( this.getModeller(), this.pattern.getExpression(), this.readOnly );
this.expressionBuilder.addOnModifiedCommand( new Command() {
public void execute() {
setModified( true );
}
} );
panel.setWidget( r, 1, this.expressionBuilder );
return panel;
}
/**
* Pops up the fact selector.
*/
protected void showFactTypeSelector(final Widget w) {
SuggestionCompletionEngine completions = this.getModeller().getSuggestionCompletions();
final ListBox box = new ListBox();
String[] facts = completions.getFactTypes();
box.addItem( constants.Choose() );
for ( int i = 0; i < facts.length; i++ ) {
box.addItem( facts[i] );
}
box.setSelectedIndex( 0 );
final FormStylePopup popup = new FormStylePopup();
popup.setTitle( constants.NewFactPattern() );
popup.addAttribute( constants.chooseFactType(), box );
box.addChangeHandler( new ChangeHandler() {
public void onChange(ChangeEvent event) {
pattern.setFactPattern( new FactPattern( box.getItemText( box.getSelectedIndex() ) ) );
setModified( true );
getModeller().refreshWidget();
popup.hide();
}
} );
popup.show();
}
protected Widget addRemoveButton(Widget w, ClickHandler listener) {
DirtyableHorizontalPane horiz = new DirtyableHorizontalPane();
final Image remove = new ImageButton( images.deleteItemSmall() );
remove.setTitle( constants.RemoveThisBlockOfData() );
remove.addClickHandler( listener );
horiz.setWidth( "100%" );
w.setWidth( "100%" );
horiz.add( w );
if ( !this.readOnly ) {
horiz.add( remove );
}
return horiz;
}
public boolean isDirty() {
return layout.hasDirty();
}
protected void calculateReadOnly() {
if ( this.pattern.factPattern != null ) {
this.readOnly = !this.getModeller().getSuggestionCompletions().containsFactType( this.pattern.factPattern.getFactType() );
}
}
@Override
public boolean isReadOnly() {
return this.readOnly;
}
}