/*
* Copyright 2012 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.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.HorizontalPanel;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.ListBox;
import com.google.gwt.user.client.ui.Widget;
import org.drools.workbench.models.commons.shared.rule.ActionFieldValue;
import org.drools.workbench.models.commons.shared.rule.ActionInsertFact;
import org.drools.workbench.models.commons.shared.rule.ActionSetField;
import org.drools.workbench.models.commons.shared.rule.ActionUpdateField;
import org.drools.workbench.screens.guided.rule.client.editor.ActionValueEditor;
import org.drools.workbench.screens.guided.rule.client.editor.RuleModeller;
import org.drools.workbench.screens.guided.rule.client.editor.events.TemplateVariablesChangedEvent;
import org.drools.workbench.screens.guided.rule.client.resources.i18n.Constants;
import org.drools.workbench.screens.guided.rule.client.resources.images.GuidedRuleEditorImages508;
import org.drools.workbench.screens.guided.rule.client.util.FieldNatureUtil;
import org.kie.workbench.common.widgets.client.resources.HumanReadable;
import org.drools.workbench.models.commons.shared.oracle.model.DropDownData;
import org.drools.workbench.models.commons.shared.oracle.model.FieldAccessorsAndMutators;
import org.drools.workbench.models.commons.shared.oracle.PackageDataModelOracle;
import org.uberfire.client.common.ClickableLabel;
import org.uberfire.client.common.DirtyableFlexTable;
import org.uberfire.client.common.FormStylePopup;
import org.uberfire.client.common.SmallLabel;
import org.uberfire.client.common.popups.errors.ErrorPopup;
/**
* This widget is for setting fields on a bound fact or global variable.
*/
public class ActionSetFieldWidget extends RuleModellerWidget {
final private ActionSetField model;
final private DirtyableFlexTable layout;
private boolean isBoundFact = false;
private String[] fieldCompletions;
private String variableClass;
private boolean readOnly;
private boolean isFactTypeKnown;
public ActionSetFieldWidget( RuleModeller mod,
EventBus eventBus,
ActionSetField set,
Boolean readOnly ) {
super( mod,
eventBus );
this.model = set;
this.layout = new DirtyableFlexTable();
layout.setStyleName( "model-builderInner-Background" );
PackageDataModelOracle completions = this.getModeller().getSuggestionCompletions();
if ( completions.isGlobalVariable( set.getVariable() ) ) {
this.fieldCompletions = completions.getFieldCompletionsForGlobalVariable( set.getVariable() );
this.variableClass = completions.getGlobalVariable( set.getVariable() );
} else {
String type = mod.getModel().getLHSBindingType( set.getVariable() );
if ( type != null ) {
this.fieldCompletions = completions.getFieldCompletions( FieldAccessorsAndMutators.MUTATOR,
type );
this.variableClass = type;
this.isBoundFact = true;
} else {
ActionInsertFact patternRhs = mod.getModel().getRHSBoundFact( set.getVariable() );
if ( patternRhs != null ) {
this.fieldCompletions = completions.getFieldCompletions( FieldAccessorsAndMutators.MUTATOR,
patternRhs.getFactType() );
this.variableClass = patternRhs.getFactType();
this.isBoundFact = true;
}
}
}
if ( this.variableClass == null ) {
readOnly = true;
ErrorPopup.showMessage( Constants.INSTANCE.CouldNotFindTheTypeForVariable0( set.getVariable() ) );
}
this.isFactTypeKnown = completions.isFactTypeRecognized( this.variableClass );
if ( readOnly == null ) {
this.readOnly = !this.isFactTypeKnown;
} else {
this.readOnly = readOnly;
}
if ( this.readOnly ) {
layout.addStyleName( "editor-disabled-widget" );
}
doLayout();
initWidget( this.layout );
}
private void doLayout() {
layout.clear();
for ( int i = 0; i < model.getFieldValues().length; i++ ) {
ActionFieldValue val = model.getFieldValues()[ i ];
layout.setWidget( i,
0,
getSetterLabel() );
layout.setWidget( i,
1,
fieldSelector( val ) );
layout.setWidget( i,
2,
valueEditor( val ) );
final int idx = i;
Image remove = GuidedRuleEditorImages508.INSTANCE.DeleteItemSmall();
remove.addClickHandler( new ClickHandler() {
public void onClick( ClickEvent event ) {
if ( Window.confirm( Constants.INSTANCE.RemoveThisItem() ) ) {
model.removeField( idx );
setModified( true );
getModeller().refreshWidget();
//Signal possible change in Template variables
TemplateVariablesChangedEvent tvce = new TemplateVariablesChangedEvent( getModeller().getModel() );
getEventBus().fireEventFromSource( tvce,
getModeller().getModel() );
}
}
} );
if ( !this.readOnly ) {
layout.setWidget( i,
3,
remove );
}
}
if ( model.getFieldValues().length == 0 ) {
HorizontalPanel h = new HorizontalPanel();
h.add( getSetterLabel() );
if ( !this.readOnly ) {
Image image = GuidedRuleEditorImages508.INSTANCE.Edit();
image.setAltText( Constants.INSTANCE.AddFirstNewField() );
image.setTitle( Constants.INSTANCE.AddFirstNewField() );
image.addClickHandler( new ClickHandler() {
public void onClick( ClickEvent sender ) {
showAddFieldPopup( sender );
}
} );
h.add( image );
}
layout.setWidget( 0,
0,
h );
}
//layout.setWidget( 0, 1, inner );
}
private Widget getSetterLabel() {
ClickHandler clk = new ClickHandler() {
public void onClick( ClickEvent event ) {
//Widget w = (Widget)event.getSource();
showAddFieldPopup( event );
}
};
String modifyType = "set";
if ( this.model instanceof ActionUpdateField) {
modifyType = "modify";
}
String type = this.getModeller().getModel().getLHSBindingType( model.getVariable() );
String descFact = ( type != null ) ? type + " <b>[" + model.getVariable() + "]</b>" : model.getVariable();
String sl = Constants.INSTANCE.setterLabel( HumanReadable.getActionDisplayName(modifyType),
descFact );
return new ClickableLabel( sl,
clk,
!this.readOnly );//HumanReadable.getActionDisplayName(modifyType) + " value of <b>[" + model.variable + "]</b>", clk);
}
protected void showAddFieldPopup( ClickEvent w ) {
final PackageDataModelOracle completions = this.getModeller().getSuggestionCompletions();
final FormStylePopup popup = new FormStylePopup( GuidedRuleEditorImages508.INSTANCE.Wizard(),
Constants.INSTANCE.AddAField() );
final ListBox box = new ListBox();
box.addItem( "..." );
for ( int i = 0; i < fieldCompletions.length; i++ ) {
box.addItem( fieldCompletions[ i ] );
}
box.setSelectedIndex( 0 );
popup.addAttribute( Constants.INSTANCE.AddField(),
box );
box.addChangeHandler( new ChangeHandler() {
public void onChange( ChangeEvent event ) {
String fieldName = box.getItemText( box.getSelectedIndex() );
String fieldType = completions.getFieldType( variableClass,
fieldName );
model.addFieldValue( new ActionFieldValue( fieldName,
"",
fieldType ) );
setModified( true );
getModeller().refreshWidget();
popup.hide();
}
} );
popup.show();
}
private Widget valueEditor( final ActionFieldValue val ) {
PackageDataModelOracle completions = this.getModeller().getSuggestionCompletions();
String type = "";
if ( completions.isGlobalVariable( this.model.getVariable() ) ) {
type = completions.getGlobalVariable( this.model.getVariable() );
} else {
type = this.getModeller().getModel().getLHSBindingType( this.model.getVariable() );
/*
* to take in account if the using a rhs bound variable
*/
if ( type == null && !this.readOnly ) {
type = this.getModeller().getModel().getRHSBoundFact( this.model.getVariable() ).getFactType();
}
}
DropDownData enums = completions.getEnums( type,
val.getField(),
FieldNatureUtil.toMap( this.model.getFieldValues() ) );
ActionValueEditor actionValueEditor = new ActionValueEditor( val,
enums,
this.getModeller(),
this.getEventBus(),
val.getType(),
this.readOnly );
actionValueEditor.setOnChangeCommand( new Command() {
public void execute() {
setModified( true );
}
} );
return actionValueEditor;
}
private Widget fieldSelector( final ActionFieldValue val ) {
return new SmallLabel( val.getField() );
}
/**
* This returns true if the values being set are on a fact.
*/
public boolean isBoundFact() {
return isBoundFact;
}
public boolean isDirty() {
return layout.hasDirty();
}
@Override
public boolean isReadOnly() {
return this.readOnly;
}
@Override
public boolean isFactTypeKnown() {
return this.isFactTypeKnown;
}
}