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.*;
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.ActionSetField;
import org.drools.guvnor.client.modeldriven.brl.ActionUpdateField;
import org.drools.guvnor.client.modeldriven.brl.FactPattern;
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;
import com.gwtext.client.util.Format;
/**
* This widget is for setting fields on a bound fact or global variable.
*
* @author Michael Neale
*/
public class ActionSetFieldWidget extends DirtyableComposite {
final private ActionSetField model;
final private SuggestionCompletionEngine completions;
final private DirtyableFlexTable layout;
private boolean isBoundFact = false;
final private String[] fieldCompletions;
final private RuleModeller modeller;
final private String variableClass;
private Constants constants = GWT.create(Constants.class);
public ActionSetFieldWidget(RuleModeller mod, ActionSetField set, SuggestionCompletionEngine com) {
this.model = set;
this.completions = com;
this.layout = new DirtyableFlexTable();
this.modeller = mod;
layout.setStyleName( "model-builderInner-Background" );
if (completions.isGlobalVariable( set.variable )) {
this.fieldCompletions = completions.getFieldCompletionsForGlobalVariable( set.variable );
this.variableClass = (String) completions.globalTypes.get( set.variable );
} else {
FactPattern pattern = mod.getModel().getBoundFact( set.variable );
this.fieldCompletions = completions.getFieldCompletions( pattern.factType );
this.variableClass = pattern.factType;
this.isBoundFact = true;
}
doLayout();
initWidget( this.layout );
}
private void doLayout() {
layout.clear();
layout.setWidget( 0, 0, getSetterLabel() );
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"); //NON-NLS
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 getSetterLabel() {
HorizontalPanel horiz = new HorizontalPanel();
Image edit = new ImageButton("images/edit_tiny.gif");
edit.setTitle(constants.AddAnotherFieldToThisSoYouCanSetItsValue());
ClickListener clk = new ClickListener() {
public void onClick(Widget w) {
showAddFieldPopup(w);
}
};
edit.addClickListener(clk);
String modifyType = "set";
if (this.model instanceof ActionUpdateField) {
modifyType = "modify";
}
String sl = Format.format(constants.setterLabel(), new String[] {HumanReadable.getActionDisplayName(modifyType), model.variable});
ClickableLabel lbl = new ClickableLabel(sl, clk);//HumanReadable.getActionDisplayName(modifyType) + " value of <b>[" + model.variable + "]</b>", clk);
horiz.add( lbl) ;
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( variableClass, fieldName );
model.addFieldValue( new ActionFieldValue( fieldName, "", fieldType ) );
modeller.refreshWidget();
popup.hide();
}
});
popup.show();
}
private Widget valueEditor(final ActionFieldValue val) {
String type = "";
if (this.completions.isGlobalVariable(this.model.variable)) {
type = (String) this.completions.globalTypes.get(this.model.variable);
} else {
type = this.modeller.getModel().getBoundFact(this.model.variable).factType;
}
DropDownData enums = this.completions.getEnums(type, this.model.fieldValues, val.field);
return new ActionValueEditor(val, enums);
}
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();
}
}