/*
* 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.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.DirtyableVerticalPane;
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.CompositeFactPattern;
import org.drools.ide.common.client.modeldriven.brl.FactPattern;
import org.drools.ide.common.client.modeldriven.brl.FromAccumulateCompositeFactPattern;
import org.drools.ide.common.client.modeldriven.brl.FromCollectCompositeFactPattern;
import org.drools.ide.common.client.modeldriven.brl.FromCompositeFactPattern;
import org.drools.ide.common.client.modeldriven.brl.IFactPattern;
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.Button;
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;
/**
* This represents a top level CE, like an OR, NOT, EXIST etc... Contains a list
* of FactPatterns.
*/
public class CompositeFactPatternWidget extends RuleModellerWidget {
private static Images images = GWT.create( Images.class );
protected final SuggestionCompletionEngine completions;
protected Constants constants = ((Constants) GWT.create( Constants.class ));
protected DirtyableFlexTable layout;
protected CompositeFactPattern pattern;
protected boolean readOnly;
public CompositeFactPatternWidget(RuleModeller modeller,
CompositeFactPattern pattern) {
this( modeller,
pattern,
null );
}
public CompositeFactPatternWidget(RuleModeller modeller,
CompositeFactPattern pattern,
Boolean readOnly) {
super( modeller );
this.completions = modeller.getSuggestionCompletions();
this.pattern = pattern;
this.layout = new DirtyableFlexTable();
this.layout.setStyleName( "model-builderInner-Background" );
if ( readOnly != null ) {
this.readOnly = readOnly;
} else {
this.readOnly = false;
if ( this.pattern != null && this.pattern.getPatterns() != null ) {
IFactPattern[] patterns = this.pattern.getPatterns();
for ( int i = 0; i < patterns.length; i++ ) {
IFactPattern p = patterns[i];
//for empty FROM / ACCUMULATE / COLLECT patterns
if ( p.getFactType() == null ) {
continue;
}
if ( !completions.containsFactType( p.getFactType() ) ) {
this.readOnly = true;
break;
}
}
}
}
if ( this.readOnly ) {
layout.addStyleName( "editor-disabled-widget" );
}
doLayout();
initWidget( layout );
}
public boolean isDirty() {
return layout.hasDirty();
}
@Override
public boolean isReadOnly() {
return this.readOnly;
}
private HTML spacerWidget() {
HTML h = new HTML( " " );
h.setHeight( "2px" );
return h;
}
/**
* Wraps a RuleModellerWidget with an icon to delete the pattern
*/
private Widget wrapLHSWidget(final CompositeFactPattern model,
int i,
RuleModellerWidget w) {
DirtyableHorizontalPane horiz = new DirtyableHorizontalPane();
final Image remove = new ImageButton( images.deleteItemSmall() );
remove.setTitle( constants.RemoveThisENTIREConditionAndAllTheFieldConstraintsThatBelongToIt() );
final int idx = i;
remove.addClickHandler( new ClickHandler() {
public void onClick(ClickEvent event) {
if ( Window.confirm( constants.RemoveThisEntireConditionQ() ) ) {
if ( pattern.removeFactPattern( idx ) ) {
getModeller().refreshWidget();
}
}
}
} );
horiz.setWidth( "100%" );
w.setWidth( "100%" );
horiz.add( w );
if ( !(getModeller().lockLHS() || w.isReadOnly()) ) {
horiz.add( remove );
}
return horiz;
}
protected void doLayout() {
this.layout.setWidget( 0,
0,
getCompositeLabel() );
this.layout.getFlexCellFormatter().setColSpan( 0,
0,
2 );
//this.layout.getFlexCellFormatter().setWidth(0, 0, "15%");
this.layout.setWidget( 1,
0,
new HTML( " " ) );
if ( this.pattern.getPatterns() != null ) {
DirtyableVerticalPane vert = new DirtyableVerticalPane();
IFactPattern[] facts = pattern.getPatterns();
for ( int i = 0; i < facts.length; i++ ) {
RuleModellerWidget widget = this.getModeller().getWidgetFactory().getWidget( this.getModeller(),
facts[i],
this.readOnly );
widget.addOnModifiedCommand( new Command() {
public void execute() {
setModified( true );
}
} );
//Wrap widget so the Fact pattern can be deleted
vert.add( wrapLHSWidget( pattern,
i,
widget ) );
vert.add( spacerWidget() );
}
this.layout.setWidget( 1,
1,
vert );
}
}
protected Widget getCompositeLabel() {
ClickHandler click = new ClickHandler() {
public void onClick(ClickEvent event) {
Widget w = (Widget) event.getSource();
showFactTypeSelector( w );
}
};
String lbl = HumanReadable.getCEDisplayName( pattern.type );
if ( pattern.getPatterns() == null || pattern.getPatterns().length == 0 ) {
lbl += " <font color='red'>" + constants.clickToAddPatterns() + "</font>";
}
return new ClickableLabel( lbl + ":",
click,
!this.readOnly );
}
/**
* Pops up the fact selector.
*/
protected void showFactTypeSelector(final Widget w) {
final ListBox box = new ListBox();
SuggestionCompletionEngine completions = this.getModeller().getSuggestionCompletions();
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.addFactPattern( new FactPattern( box.getItemText( box.getSelectedIndex() ) ) );
setModified( true );
getModeller().refreshWidget();
popup.hide();
}
} );
final Button fromBtn = new Button( constants.From() );
final Button fromAccumulateBtn = new Button( constants.FromAccumulate() );
final Button fromCollectBtn = new Button( constants.FromCollect() );
ClickHandler btnsClickHandler = new ClickHandler() {
public void onClick(ClickEvent event) {
Widget sender = (Widget) event.getSource();
if ( sender == fromBtn ) {
pattern.addFactPattern(
new FromCompositeFactPattern() );
} else if ( sender == fromAccumulateBtn ) {
pattern.addFactPattern(
new FromAccumulateCompositeFactPattern() );
} else if ( sender == fromCollectBtn ) {
pattern.addFactPattern(
new FromCollectCompositeFactPattern() );
} else {
throw new IllegalArgumentException( "Unknown sender: "
+ sender );
}
setModified( true );
getModeller().refreshWidget();
popup.hide();
}
};
fromBtn.addClickHandler( btnsClickHandler );
fromAccumulateBtn.addClickHandler( btnsClickHandler );
fromCollectBtn.addClickHandler( btnsClickHandler );
popup.addAttribute( "",
fromBtn );
popup.addAttribute( "",
fromAccumulateBtn );
popup.addAttribute( "",
fromCollectBtn );
popup.show();
}
}