/*
* 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.DirtyableHorizontalPane;
import org.drools.guvnor.client.common.FormStyleLayout;
import org.drools.guvnor.client.common.InfoPopup;
import org.drools.guvnor.client.common.SmallLabel;
import org.drools.guvnor.client.messages.Constants;
import org.drools.guvnor.client.resources.Images;
import org.drools.ide.common.client.modeldriven.brl.RuleAttribute;
import org.drools.ide.common.client.modeldriven.brl.RuleMetadata;
import org.drools.ide.common.client.modeldriven.brl.RuleModel;
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.event.dom.client.KeyUpEvent;
import com.google.gwt.event.dom.client.KeyUpHandler;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.CheckBox;
import com.google.gwt.user.client.ui.Composite;
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;
/**
* Displays a list of rule options (attributes).
*
* @author Michael Neale
* <p/>
* Added support for metadata - Michael Rhoden 10/17/08
*/
public class RuleAttributeWidget extends Composite {
private Constants constants = GWT.create( Constants.class );
private static Images images = GWT.create( Images.class );
/**
* These are the names of all of the rule attributes for this widget
*/
public static final String SALIENCE_ATTR = "salience"; // needs to be public
private static final String ENABLED_ATTR = "enabled";
private static final String DATE_EFFECTIVE_ATTR = "date-effective";
private static final String DATE_EXPIRES_ATTR = "date-expires";
private static final String NO_LOOP_ATTR = "no-loop";
private static final String AGENDA_GROUP_ATTR = "agenda-group";
private static final String ACTIVATION_GROUP_ATTR = "activation-group";
private static final String DURATION_ATTR = "duration";
private static final String AUTO_FOCUS_ATTR = "auto-focus";
private static final String LOCK_ON_ACTIVE_ATTR = "lock-on-active";
private static final String RULEFLOW_GROUP_ATTR = "ruleflow-group";
private static final String DIALECT_ATTR = "dialect";
public static final String LOCK_LHS = "freeze_conditions";
public static final String LOCK_RHS = "freeze_actions";
/**
* If the rule attribute is represented visually by a checkbox, these are the values that will
* be stored in the model when checked/unchecked
*/
private static final String TRUE_VALUE = "true";
private static final String FALSE_VALUE = "false";
private RuleModel model;
private RuleModeller parent;
public RuleAttributeWidget(RuleModeller parent,
RuleModel model) {
this.parent = parent;
this.model = model;
FormStyleLayout layout = new FormStyleLayout();
//Adding metadata here, seems redundant to add a new widget for metadata. Model does handle meta data separate.
RuleMetadata[] meta = model.metadataList;
if ( meta.length > 0 ) {
HorizontalPanel hp = new HorizontalPanel();
hp.add( new SmallLabel( constants.Metadata2() ) );
layout.addRow( hp );
}
for ( int i = 0; i < meta.length; i++ ) {
RuleMetadata rmd = meta[i];
layout.addAttribute( rmd.attributeName,
getEditorWidget( rmd,
i ) );
}
RuleAttribute[] attrs = model.attributes;
if ( attrs.length > 0 ) {
HorizontalPanel hp = new HorizontalPanel();
hp.add( new SmallLabel( constants.Attributes1() ) );
layout.addRow( hp );
}
for ( int i = 0; i < attrs.length; i++ ) {
RuleAttribute at = attrs[i];
layout.addAttribute( at.attributeName,
getEditorWidget( at,
i ) );
}
initWidget( layout );
}
/**
* Return a listbox of choices for rule attributes.
*
* @return
*/
public static ListBox getAttributeList() {
Constants cons = ((Constants) GWT.create( Constants.class ));
ListBox list = new ListBox();
list.addItem( cons.Choose() );
list.addItem( SALIENCE_ATTR );
list.addItem( ENABLED_ATTR );
list.addItem( DATE_EFFECTIVE_ATTR );
list.addItem( DATE_EXPIRES_ATTR );
list.addItem( NO_LOOP_ATTR );
list.addItem( AGENDA_GROUP_ATTR );
list.addItem( ACTIVATION_GROUP_ATTR );
list.addItem( DURATION_ATTR );
list.addItem( AUTO_FOCUS_ATTR );
list.addItem( LOCK_ON_ACTIVE_ATTR );
list.addItem( RULEFLOW_GROUP_ATTR );
list.addItem( DIALECT_ATTR );
return list;
}
private Widget getEditorWidget(final RuleAttribute at,
final int idx) {
Widget editor;
if ( at.attributeName.equals( ENABLED_ATTR ) || at.attributeName.equals( AUTO_FOCUS_ATTR ) || at.attributeName.equals( LOCK_ON_ACTIVE_ATTR ) || at.attributeName.equals( NO_LOOP_ATTR ) ) {
editor = checkBoxEditor( at );
} else {
editor = textBoxEditor( at );
}
DirtyableHorizontalPane horiz = new DirtyableHorizontalPane();
horiz.add( editor );
horiz.add( getRemoveIcon( idx ) );
return horiz;
}
private Widget getEditorWidget(final RuleMetadata rm,
final int idx) {
Widget editor;
if ( rm.attributeName.equals( LOCK_LHS ) || rm.attributeName.equals( LOCK_RHS ) ) {
editor = new InfoPopup( constants.FrozenAreas(),
constants.FrozenExplanation() );
} else {
editor = textBoxEditor( rm );
}
DirtyableHorizontalPane horiz = new DirtyableHorizontalPane();
horiz.add( editor );
horiz.add( getRemoveMetaIcon( idx ) );
return horiz;
}
private Widget checkBoxEditor(final RuleAttribute at) {
final CheckBox box = new CheckBox();
if ( at.value == null ) {
box.setValue( true );
at.value = TRUE_VALUE;
} else {
box.setValue( (at.value.equals( TRUE_VALUE )) );
}
box.addClickHandler( new ClickHandler() {
public void onClick(ClickEvent event) {
at.value = (box.getValue()) ? TRUE_VALUE : FALSE_VALUE;
}
} );
return box;
}
private TextBox textBoxEditor(final RuleAttribute at) {
final TextBox box = new TextBox();
box.setVisibleLength( (at.value.length() < 3) ? 3 : at.value.length() );
box.setText( at.value );
box.addChangeHandler( new ChangeHandler() {
public void onChange(ChangeEvent event) {
at.value = box.getText();
}
} );
if ( at.attributeName.equals( DATE_EFFECTIVE_ATTR ) || at.attributeName.equals( DATE_EXPIRES_ATTR ) ) {
if ( at.value == null || "".equals( at.value ) ) box.setText( "" );
box.setVisibleLength( 10 );
}
box.addKeyUpHandler( new KeyUpHandler() {
public void onKeyUp(KeyUpEvent event) {
box.setVisibleLength( box.getText().length() );
}
} );
return box;
}
private TextBox textBoxEditor(final RuleMetadata rm) {
final TextBox box = new TextBox();
box.setVisibleLength( (rm.value.length() < 3) ? 3 : rm.value.length() );
box.setText( rm.value );
box.addChangeHandler( new ChangeHandler() {
public void onChange(ChangeEvent event) {
rm.value = box.getText();
}
} );
box.addKeyUpHandler( new KeyUpHandler() {
public void onKeyUp(KeyUpEvent event) {
box.setVisibleLength( box.getText().length() );
}
} );
return box;
}
private Image getRemoveIcon(final int idx) {
Image remove = new Image( images.deleteItemSmall() );
remove.addClickHandler( new ClickHandler() {
public void onClick(ClickEvent event) {
if ( Window.confirm( constants.RemoveThisRuleOption() ) ) {
model.removeAttribute( idx );
parent.refreshWidget();
}
}
} );
return remove;
}
private Image getRemoveMetaIcon(final int idx) {
Image remove = new Image( images.deleteItemSmall() );
remove.addClickHandler( new ClickHandler() {
public void onClick(ClickEvent event) {
if ( Window.confirm( constants.RemoveThisRuleOption() ) ) {
model.removeMetadata( idx );
parent.refreshWidget();
}
}
} );
return remove;
}
}