/*
* 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.FormStylePopup;
import org.drools.guvnor.client.common.ImageButton;
import org.drools.guvnor.client.common.SmallLabel;
import org.drools.guvnor.client.messages.Constants;
import org.drools.guvnor.client.modeldriven.HumanReadable;
import org.drools.guvnor.client.resources.Images;
import org.drools.guvnor.client.util.Format;
import org.drools.ide.common.client.modeldriven.DropDownData;
import org.drools.ide.common.client.modeldriven.FieldAccessorsAndMutators;
import org.drools.ide.common.client.modeldriven.SuggestionCompletionEngine;
import org.drools.ide.common.client.modeldriven.brl.ActionFieldValue;
import org.drools.ide.common.client.modeldriven.brl.ActionInsertFact;
import org.drools.ide.common.client.modeldriven.brl.ActionSetField;
import org.drools.ide.common.client.modeldriven.brl.ActionUpdateField;
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.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;
/**
* This widget is for setting fields on a bound fact or global variable.
*
* @author Michael Neale
*/
public class ActionSetFieldWidget extends RuleModellerWidget {
private Constants constants = GWT.create( Constants.class );
private static Images images = GWT.create( Images.class );
final private ActionSetField model;
final private DirtyableFlexTable layout;
private boolean isBoundFact = false;
private String[] fieldCompletions;
private String variableClass;
private boolean readOnly;
public ActionSetFieldWidget(RuleModeller mod,
ActionSetField set) {
this( mod,
set,
null );
}
public ActionSetFieldWidget(RuleModeller mod,
ActionSetField set,
Boolean readOnly) {
super( mod );
this.model = set;
this.layout = new DirtyableFlexTable();
layout.setStyleName( "model-builderInner-Background" );
SuggestionCompletionEngine completions = this.getModeller().getSuggestionCompletions();
if ( completions.isGlobalVariable( set.variable ) ) {
this.fieldCompletions = completions.getFieldCompletionsForGlobalVariable( set.variable );
this.variableClass = completions.getGlobalVariable( set.variable );
} else {
String type = mod.getModel().getBindingType( set.variable );
if ( type != null ) {
this.fieldCompletions = completions.getFieldCompletions( FieldAccessorsAndMutators.MUTATOR,
type );
this.variableClass = type;
this.isBoundFact = true;
} else {
ActionInsertFact patternRhs = mod.getModel().getRhsBoundFact( set.variable );
if ( patternRhs != null ) {
this.fieldCompletions = completions.getFieldCompletions( FieldAccessorsAndMutators.MUTATOR,
patternRhs.factType );
this.variableClass = patternRhs.factType;
this.isBoundFact = true;
}
}
}
if ( this.variableClass == null ) {
throw new IllegalStateException( "couldn't find type for variable: " + set.variable );
}
if ( readOnly == null ) {
this.readOnly = !completions.containsFactType( this.variableClass );
} 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.fieldValues.length; i++ ) {
ActionFieldValue val = model.fieldValues[i];
layout.setWidget( i,
0,
getSetterLabel() );
layout.setWidget( i,
1,
fieldSelector( val ) );
layout.setWidget( i,
2,
valueEditor( val ) );
final int idx = i;
Image remove = new ImageButton( images.deleteItemSmall() );
remove.addClickHandler( new ClickHandler() {
public void onClick(ClickEvent event) {
if ( Window.confirm( constants.RemoveThisItem() ) ) {
model.removeField( idx );
setModified( true );
getModeller().refreshWidget();
}
}
} );
if ( !this.readOnly ) {
layout.setWidget( i,
3,
remove );
}
}
if ( model.fieldValues.length == 0 ) {
HorizontalPanel h = new HorizontalPanel();
h.add( getSetterLabel() );
if ( !this.readOnly ) {
h.add( new ImageButton( images.editTiny(),
constants.AddFirstNewField(),
new ClickHandler() {
public void onClick(ClickEvent sender) {
showAddFieldPopup( sender );
}
} ) );
}
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().getBindingType( model.variable );
String descFact = (type != null) ? type + " <b>[" + model.variable + "]</b>" : model.variable;
String sl = Format.format( constants.setterLabel(),
new String[]{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 SuggestionCompletionEngine completions = this.getModeller().getSuggestionCompletions();
final FormStylePopup popup = new FormStylePopup( images.newexWiz(),
constants.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.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) {
SuggestionCompletionEngine completions = this.getModeller().getSuggestionCompletions();
String type = "";
if ( completions.isGlobalVariable( this.model.variable ) ) {
type = (String) completions.getGlobalVariable( this.model.variable );
} else {
type = this.getModeller().getModel().getBindingType( this.model.variable );
/*
* to take in account if the using a rhs bound variable
*/
if ( type == null ) {
type = this.getModeller().getModel().getRhsBoundFact( this.model.variable ).factType;
}
}
DropDownData enums = completions.getEnums( type,
this.model.fieldValues,
val.field );
ActionValueEditor actionValueEditor = new ActionValueEditor( val,
enums,
this.getModeller(),
val.type,
this.readOnly );
actionValueEditor.setOnChangeCommand( new Command() {
public void execute() {
setModified( true );
}
} );
return actionValueEditor;
}
private Widget fieldSelector(final ActionFieldValue val) {
return new SmallLabel( val.field );
}
/**
* 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;
}
}