package org.drools.guvnor.client.modeldriven.ui;
/*
* 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.
*/
import org.drools.guvnor.client.common.DirtyableComposite;
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.modeldriven.DropDownData;
import org.drools.guvnor.client.modeldriven.HumanReadable;
import org.drools.guvnor.client.modeldriven.SuggestionCompletionEngine;
import org.drools.guvnor.client.modeldriven.brl.ActionFieldValue;
import org.drools.guvnor.client.modeldriven.brl.ActionInsertFact;
import org.drools.guvnor.client.modeldriven.brl.ActionInsertLogicalFact;
import org.drools.guvnor.client.messages.Constants;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.ChangeListener;
import com.google.gwt.user.client.ui.ClickListener;
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 com.google.gwt.core.client.GWT;
/**
* This is used when asserting a new fact into working memory.
*
* @author Michael Neale
*
*/
public class ActionInsertFactWidget extends DirtyableComposite {
private final DirtyableFlexTable layout;
private final ActionInsertFact model;
private final SuggestionCompletionEngine completions;
private final String[] fieldCompletions;
private final RuleModeller modeller;
private final String factType;
private Constants constants = GWT.create(Constants.class);
public ActionInsertFactWidget(RuleModeller mod, ActionInsertFact set, SuggestionCompletionEngine com) {
this.model = set;
this.completions = com;
this.layout = new DirtyableFlexTable();
this.modeller = mod;
this.factType = set.factType;
this.fieldCompletions = this.completions.getFieldCompletions( set.factType );
layout.setStyleName( "model-builderInner-Background" ); //NON-NLS
doLayout();
initWidget(this.layout);
}
private void doLayout() {
layout.clear();
layout.setWidget( 0, 0, getAssertLabel() );
DirtyableFlexTable inner = new DirtyableFlexTable();
for ( int i = 0; i < model.fieldValues.length; i++ ) {
ActionFieldValue val = model.fieldValues[i];
inner.setWidget( i, 0, fieldSelector(val) );
inner.setWidget( i, 1, valueEditor(val) );
final int idx = i;
Image remove = new ImageButton("images/delete_item_small.gif");
remove.addClickListener( new ClickListener() {
public void onClick(Widget w) {
if (Window.confirm(constants.RemoveThisItem())) {
model.removeField( idx );
modeller.refreshWidget();
};
}
});
inner.setWidget( i, 2, remove );
}
layout.setWidget( 0, 1, inner );
}
private Widget valueEditor(final ActionFieldValue val) {
DropDownData enums = this.completions.getEnums(this.factType, this.model.fieldValues, val.field);
return new ActionValueEditor(val, enums);
}
private Widget fieldSelector(final ActionFieldValue val) {
return new SmallLabel(val.field);
}
private Widget getAssertLabel() {
HorizontalPanel horiz = new HorizontalPanel();
Image edit = new ImageButton("images/edit_tiny.gif");
edit.setTitle(constants.AddAnotherFieldToThisSoYouCanSetItsValue());
edit.addClickListener( new ClickListener() {
public void onClick(Widget w) {
showAddFieldPopup(w);
}
} );
String assertType = "assert"; //NON-NLS
if (this.model instanceof ActionInsertLogicalFact) {
assertType = "assertLogical"; //NON-NLS
}
horiz.add( new SmallLabel(HumanReadable.getActionDisplayName(assertType) + " <b>" + this.model.factType + "</b>") );
horiz.add( edit );
return horiz;
}
protected void showAddFieldPopup(Widget w) {
final FormStylePopup popup = new FormStylePopup("images/newex_wiz.gif", 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.addChangeListener( new ChangeListener() {
public void onChange(Widget w) {
String fieldName = box.getItemText( box.getSelectedIndex() );
String fieldType = completions.getFieldType( model.factType, fieldName );
model.addFieldValue( new ActionFieldValue( fieldName, "", fieldType ) );
modeller.refreshWidget();
popup.hide();
}
});
popup.show();
}
}