/*
* Copyright 2012 Red Hat, Inc. and/or its affiliates.
*
* 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.workbench.screens.guided.rule.client.widget;
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.event.shared.EventBus;
import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.FlexTable;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.Widget;
import org.drools.workbench.models.datamodel.rule.CompositeFactPattern;
import org.drools.workbench.models.datamodel.rule.FactPattern;
import org.drools.workbench.models.datamodel.rule.FromAccumulateCompositeFactPattern;
import org.drools.workbench.models.datamodel.rule.FromCollectCompositeFactPattern;
import org.drools.workbench.models.datamodel.rule.FromCompositeFactPattern;
import org.drools.workbench.models.datamodel.rule.IFactPattern;
import org.drools.workbench.screens.guided.rule.client.editor.RuleModeller;
import org.drools.workbench.screens.guided.rule.client.resources.GuidedRuleEditorResources;
import org.drools.workbench.screens.guided.rule.client.resources.images.GuidedRuleEditorImages508;
import org.gwtbootstrap3.client.ui.Button;
import org.gwtbootstrap3.client.ui.ListBox;
import org.kie.workbench.common.widgets.client.datamodel.AsyncPackageDataModelOracle;
import org.kie.workbench.common.widgets.client.resources.HumanReadable;
import org.kie.workbench.common.widgets.client.resources.i18n.HumanReadableConstants;
import org.uberfire.ext.widgets.common.client.common.ClickableLabel;
import org.uberfire.ext.widgets.common.client.common.DirtyableHorizontalPane;
import org.uberfire.ext.widgets.common.client.common.DirtyableVerticalPane;
import org.uberfire.ext.widgets.common.client.common.popups.FormStylePopup;
/**
* This represents a top level CE, like an OR, NOT, EXIST etc... Contains a list
* of FactPatterns.
*/
public class CompositeFactPatternWidget extends RuleModellerWidget {
protected final AsyncPackageDataModelOracle oracle;
protected FlexTable layout;
protected CompositeFactPattern pattern;
protected boolean readOnly;
protected boolean isFactTypeKnown;
public CompositeFactPatternWidget( RuleModeller modeller,
EventBus eventBus,
CompositeFactPattern pattern,
Boolean readOnly ) {
super( modeller,
eventBus );
this.oracle = modeller.getDataModelOracle();
this.pattern = pattern;
this.layout = new FlexTable();
if ( readOnly != null ) {
this.readOnly = readOnly;
this.isFactTypeKnown = true;
} else {
this.readOnly = false;
this.isFactTypeKnown = true;
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 ( !oracle.isFactTypeRecognized( p.getFactType() ) ) {
this.readOnly = true;
this.isFactTypeKnown = false;
break;
}
}
}
}
if ( this.readOnly ) {
layout.addStyleName( "editor-disabled-widget" );
}
doLayout();
initWidget( layout );
}
@Override
public boolean isReadOnly() {
return this.readOnly;
}
@Override
public boolean isFactTypeKnown() {
return this.isFactTypeKnown;
}
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 = GuidedRuleEditorImages508.INSTANCE.DeleteItemSmall();
remove.setTitle( GuidedRuleEditorResources.CONSTANTS.RemoveThisENTIREConditionAndAllTheFieldConstraintsThatBelongToIt() );
final int idx = i;
remove.addClickHandler( new ClickHandler() {
public void onClick( ClickEvent event ) {
if ( Window.confirm( GuidedRuleEditorResources.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(),
this.getEventBus(),
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.getType() );
if ( pattern.getPatterns() == null || pattern.getPatterns().length == 0 ) {
lbl += " <font color='red'>" + GuidedRuleEditorResources.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();
AsyncPackageDataModelOracle oracle = this.getModeller().getDataModelOracle();
String[] facts = oracle.getFactTypes();
box.addItem( GuidedRuleEditorResources.CONSTANTS.Choose() );
for ( int i = 0; i < facts.length; i++ ) {
box.addItem( facts[ i ] );
}
box.setSelectedIndex( 0 );
final FormStylePopup popup = new FormStylePopup( GuidedRuleEditorResources.CONSTANTS.NewFactPattern() );
popup.addAttribute( GuidedRuleEditorResources.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( HumanReadableConstants.INSTANCE.From() );
final Button fromAccumulateBtn = new Button( HumanReadableConstants.INSTANCE.FromAccumulate() );
final Button fromCollectBtn = new Button( HumanReadableConstants.INSTANCE.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();
}
}