/**
* Copyright 2010 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.ruleeditor;
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.ui.Button;
import com.google.gwt.user.client.ui.ChangeListener;
import com.google.gwt.user.client.ui.ClickListener;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.FlexTable;
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.VerticalPanel;
import com.google.gwt.user.client.ui.Widget;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.drools.factconstraints.client.ConstraintConfiguration;
import org.drools.factconstraints.client.helper.ConstraintsContainer;
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.packages.SuggestionCompletionCache;
import org.drools.guvnor.client.rpc.RuleAsset;
import org.drools.guvnor.client.rpc.WorkingSetConfigData;
import org.drools.ide.common.client.modeldriven.SuggestionCompletionEngine;
/**
*
* @author esteban
*/
public class FactsConstraintsEditorPanel extends Composite {
private static int idGenerator = 0;
private Constants constants = GWT.create(Constants.class);
private ListBox factsCombo = new ListBox(false);
private ListBox fieldsCombo = new ListBox(false);
private ListBox constraintsCombo = new ListBox(false);
private VerticalPanel vpConstraintConf = new VerticalPanel();
private boolean validFactsChanged = true;
private Map<String, ConstraintConfiguration> contraintsMap = new HashMap<String, ConstraintConfiguration>();
private final RuleAsset workingSet;
private final WorkingSetEditor workingSetEditor;
public FactsConstraintsEditorPanel(WorkingSetEditor workingSetEditor) {
this.workingSetEditor = workingSetEditor;
this.workingSet = workingSetEditor.getWorkingSet();
factsCombo.setVisibleItemCount(1);
fieldsCombo.setVisibleItemCount(1);
constraintsCombo.setVisibleItemCount(5);
factsCombo.addChangeHandler(new ChangeHandler() {
public void onChange(ChangeEvent event) {
fillSelectedFactFields();
}
});
fieldsCombo.addChangeHandler(new ChangeHandler() {
public void onChange(ChangeEvent event) {
fillFieldConstrains();
}
});
Image addNewConstraint = new ImageButton("images/new_item.gif"); // NON-NLS
addNewConstraint.setTitle(constants.AddNewConstraint());
addNewConstraint.addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
showNewConstrainPop();
}
});
Image removeConstraint = new Image("images/trash.gif"); //NON-NLS
removeConstraint.setTitle(constants.removeConstraint());
removeConstraint.addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
removeConstraint();
}
});
final FlexTable table = new FlexTable();
VerticalPanel vp = new VerticalPanel();
vp.add(new SmallLabel(constants.FactTypes()));
vp.add(factsCombo);
table.setWidget(0, 0, vp);
vp = new VerticalPanel();
vp.add(new SmallLabel(constants.Field()));
vp.add(fieldsCombo);
table.setWidget(1, 0, vp);
vp = new VerticalPanel();
HorizontalPanel hp = new HorizontalPanel();
vp.add(new SmallLabel("Constraints")); //TODO i18n
hp.add(constraintsCombo);
VerticalPanel btnPanel = new VerticalPanel();
btnPanel.add(addNewConstraint);
btnPanel.add(removeConstraint);
hp.add(btnPanel);
vp.add(hp);
table.setWidget(2, 0, vp);
table.getFlexCellFormatter().setRowSpan(2, 0, 3);
constraintsCombo.addChangeHandler(new ChangeHandler() {
public void onChange(ChangeEvent event) {
showConstraintConfig();
}
});
vpConstraintConf.add(new SmallLabel("Contraints Parameters")); //TODO i18n
vpConstraintConf.add(new SmallLabel(""));
table.setWidget(0, 1, vpConstraintConf);
table.getFlexCellFormatter().setRowSpan(0, 1, 5);
fillSelectedFacts();
fillSelectedFactFields();
fillFieldConstrains();
showConstraintConfig();
this.initWidget(table);
}
protected final void fillSelectedFacts() {
if (validFactsChanged) {
String s = factsCombo.getSelectedIndex() != -1 ? factsCombo.getItemText(factsCombo.getSelectedIndex()) : "";
factsCombo.clear();
validFactsChanged = false;
for (int i = 0; i < workingSetEditor.getValidFactsListBox().getItemCount(); i++) {
String itemText = workingSetEditor.getValidFactsListBox().getItemText(i);
factsCombo.addItem(itemText);
if (s.equals(itemText)) {
factsCombo.setSelectedIndex(i);
}
}
if (factsCombo.getSelectedIndex() == -1 && factsCombo.getItemCount() > 0) {
factsCombo.setSelectedIndex(0);
}
fillSelectedFactFields();
}
}
private void fillSelectedFactFields() {
if (factsCombo.getSelectedIndex() != -1) {
String fact = factsCombo.getItemText(factsCombo.getSelectedIndex());
fieldsCombo.clear();
for (String field : getCompletionEngine().getFieldCompletions(fact)) {
fieldsCombo.addItem(field);
}
}
if (fieldsCombo.getSelectedIndex() == -1 && fieldsCombo.getItemCount() > 0) {
fieldsCombo.setSelectedIndex(0);
}
fillFieldConstrains();
}
private void fillFieldConstrains() {
if (fieldsCombo.getSelectedIndex() != -1) {
String fieldName = fieldsCombo.getItemText(fieldsCombo.getSelectedIndex());
String factField = factsCombo.getItemText(factsCombo.getSelectedIndex());
constraintsCombo.clear();
contraintsMap.clear();
for (ConstraintConfiguration c : this.workingSetEditor.getConstraintsConstrainer().getConstraints(factField, fieldName)) {
constraintsCombo.addItem(c.getConstraintName(), addContrainsMap(c));
}
vpConstraintConf.remove(vpConstraintConf.getWidgetCount() - 1);
vpConstraintConf.add(new SmallLabel());
}
showConstraintConfig();
}
synchronized private String addContrainsMap(ConstraintConfiguration c) {
String constraintId = String.valueOf(idGenerator++);
contraintsMap.put(constraintId, c);
return constraintId;
}
protected void removeConstraint() {
if (constraintsCombo.getSelectedIndex() != -1) {
ConstraintConfiguration c = contraintsMap.get(constraintsCombo.getValue(constraintsCombo.getSelectedIndex()));
((WorkingSetConfigData) workingSet.content).constraints = this.workingSetEditor.getConstraintsConstrainer().removeConstraint(c);
}
fillFieldConstrains();
}
private void showConstraintConfig() {
if (constraintsCombo.getItemCount() == 0) {
vpConstraintConf.remove(vpConstraintConf.getWidgetCount() - 1);
vpConstraintConf.add(new SmallLabel());
return;
}
if (constraintsCombo.getSelectedIndex() != -1) {
ConstraintConfiguration c = contraintsMap.get(constraintsCombo.getValue(constraintsCombo.getSelectedIndex()));
ConstraintEditor editor = new ConstraintEditor(c);
vpConstraintConf.remove(vpConstraintConf.getWidgetCount() - 1);
vpConstraintConf.add(editor);
}
}
private void showNewConstrainPop() {
final FormStylePopup pop = new FormStylePopup("images/config.png", constants.AddNewConstraint()); //NON-NLS
final Button addbutton = new Button(constants.OK());
final ListBox consDefsCombo = new ListBox(false);
consDefsCombo.setVisibleItemCount(5);
addbutton.setTitle(constants.AddNewConstraint());
List<String> names = new ArrayList<String>(ConstraintsContainer.getAllConfigurations().keySet());
Collections.sort(names);
for (String name : names) {
consDefsCombo.addItem(name);
}
addbutton.addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
String name = consDefsCombo.getItemText(consDefsCombo.getSelectedIndex());
ConstraintConfiguration config = ConstraintsContainer.getEmptyConfiguration(name);
if (config != null) {
String factName = factsCombo.getItemText(factsCombo.getSelectedIndex());
String fieldName = fieldsCombo.getItemText(fieldsCombo.getSelectedIndex());
config.setFactType(factName);
config.setFieldName(fieldName);
if (((WorkingSetConfigData) workingSet.content).constraints == null) {
((WorkingSetConfigData) workingSet.content).constraints = new ArrayList<ConstraintConfiguration>();
}
((WorkingSetConfigData) workingSet.content).constraints.add(config);
constraintsCombo.addItem(config.getConstraintName(), addContrainsMap(config));
workingSetEditor.getConstraintsConstrainer().addConstraint(config);
}
pop.hide();
}
});
pop.addAttribute(constants.WillExtendTheFollowingRuleCalled(), consDefsCombo);
pop.addAttribute("", addbutton);
pop.show();
}
private SuggestionCompletionEngine getCompletionEngine() {
return SuggestionCompletionCache.getInstance().getEngineFromCache(workingSet.metaData.packageName);
}
public void notifyValidFactsChanged(){
this.validFactsChanged = true;
}
}