/*
* 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.ActionInsertLogicalFact;
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.HorizontalPanel;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.ListBox;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.Widget;
/**
* This is used when asserting a new fact into working memory.
*
* @author Michael Neale
*
*/
public class ActionInsertFactWidget extends RuleModellerWidget {
private Constants constants = GWT.create( Constants.class );
private static Images images = GWT.create( Images.class );
private final DirtyableFlexTable layout;
private final ActionInsertFact model;
private final String[] fieldCompletions;
private final String factType;
private boolean readOnly;
public ActionInsertFactWidget(RuleModeller mod,
ActionInsertFact set) {
this( mod,
set,
null );
}
public ActionInsertFactWidget(RuleModeller mod,
ActionInsertFact set,
Boolean readOnly) {
super( mod );
this.model = set;
this.layout = new DirtyableFlexTable();
this.factType = set.factType;
SuggestionCompletionEngine completions = this.getModeller().getSuggestionCompletions();
this.fieldCompletions = completions.getFieldCompletions( FieldAccessorsAndMutators.MUTATOR,
set.factType );
layout.setStyleName( "model-builderInner-Background" ); //NON-NLS
if ( readOnly == null ) {
this.readOnly = !completions.containsFactType( set.factType );
} else {
this.readOnly = readOnly;
}
if ( this.readOnly ) {
layout.addStyleName( "editor-disabled-widget" );
}
doLayout();
initWidget( this.layout );
}
private void doLayout() {
layout.clear();
layout.setWidget( 0,
0,
getAssertLabel() );
layout.setWidget( 1,
0,
new HTML( " " ) );
layout.getFlexCellFormatter().setColSpan( 0,
0,
2 );
DirtyableFlexTable inner = new DirtyableFlexTable();
int col = 0;
for ( int i = 0; i < model.fieldValues.length; i++ ) {
ActionFieldValue val = model.fieldValues[i];
inner.setWidget( i,
0 + col,
fieldSelector( val ) );
inner.setWidget( i,
1 + col,
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 ) {
inner.setWidget( i,
2 + col,
remove );
}
}
layout.setWidget( 1,
1,
inner );
}
private Widget valueEditor(final ActionFieldValue val) {
SuggestionCompletionEngine completions = this.getModeller().getSuggestionCompletions();
DropDownData enums = completions.getEnums( this.factType,
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 );
}
private Widget getAssertLabel() {
ClickHandler cl = new ClickHandler() {
public void onClick(ClickEvent event) {
Widget w = (Widget) event.getSource();
showAddFieldPopup( w );
}
};
String assertType = "assert"; //NON-NLS
if ( this.model instanceof ActionInsertLogicalFact ) {
assertType = "assertLogical"; //NON-NLS
}
String lbl = (model.isBound() == false) ? HumanReadable.getActionDisplayName( assertType ) + " <b>" + this.model.factType + "</b>" : HumanReadable.getActionDisplayName( assertType ) + " <b>" + this.model.factType + "</b>" + " <b>["
+ model.getBoundName() + "]</b>";
if ( this.model.fieldValues != null && model.fieldValues.length > 0 ) {
lbl = lbl + ":";
}
return new ClickableLabel( lbl,
cl,
!this.readOnly );
}
protected void showAddFieldPopup(Widget 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( model.factType,
fieldName );
model.addFieldValue( new ActionFieldValue( fieldName,
"",
fieldType ) );
setModified( true );
getModeller().refreshWidget();
popup.hide();
}
} );
/*
* Propose a textBox to the user
* to make him set a variable name
*/
final HorizontalPanel vn = new HorizontalPanel();
final TextBox varName = new TextBox();
if ( this.model.getBoundName() != null ) {
varName.setText( this.model.getBoundName() );
}
final Button ok = new Button( constants.Set() );
vn.add( varName );
vn.add( ok );
ok.addClickHandler( new ClickHandler() {
public void onClick(ClickEvent event) {
String var = varName.getText();
if ( getModeller().isVariableNameUsed( var ) && ((model.getBoundName() != null && model.getBoundName().equals( var ) == false) || model.getBoundName() == null) ) {
Window.alert( Format.format( constants.TheVariableName0IsAlreadyTaken(),
var ) );
return;
}
model.setBoundName( var );
setModified( true );
getModeller().refreshWidget();
popup.hide();
}
} );
popup.addAttribute( constants.BoundVariable(),
vn );
popup.show();
}
@Override
public boolean isReadOnly() {
return this.readOnly;
}
}