/*
* Copyright 2013 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.artificer.ui.client.local.pages.details;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import javax.annotation.PostConstruct;
import javax.enterprise.context.Dependent;
import javax.enterprise.inject.Instance;
import javax.inject.Inject;
import org.artificer.ui.client.local.ClientMessages;
import org.artificer.ui.client.local.services.NotificationService;
import org.artificer.ui.client.local.services.OntologyServiceCaller;
import org.artificer.ui.client.local.services.callback.IServiceInvocationHandler;
import org.artificer.ui.client.local.widgets.ontologies.LoadingAllOntologies;
import org.artificer.ui.client.local.widgets.ontologies.OntologyDropDown;
import org.artificer.ui.client.shared.beans.OntologyBean;
import org.jboss.errai.ui.shared.api.annotations.DataField;
import org.jboss.errai.ui.shared.api.annotations.EventHandler;
import org.jboss.errai.ui.shared.api.annotations.Templated;
import org.overlord.commons.gwt.client.local.widgets.ModalDialog;
import org.artificer.ui.client.local.widgets.ontologies.OntologySelectorWithToolbar;
import com.google.gwt.event.dom.client.ChangeEvent;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.logical.shared.ValueChangeHandler;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.HasValue;
/**
* Dialog that allows the user to edit a property value.
*
* @author eric.wittmann@redhat.com
*/
@Templated("/org/artificer/ui/client/local/site/dialogs/modify-classifiers-dialog.html#modify-classifiers-dialog")
@Dependent
public class ModifyClassifiersDialog extends ModalDialog implements HasValue<List<String>>, IServiceInvocationHandler<List<OntologyBean>> {
@Inject
protected ClientMessages i18n;
@Inject
private OntologyServiceCaller ontologyServiceCaller;
@Inject
private NotificationService notificationService;
@Inject @DataField("modify-classifiers-dialog-body")
private FlowPanel body;
@Inject @DataField("modify-classifiers-dialog-ontology-selector")
private OntologyDropDown dropDown;
@Inject
private Instance<LoadingAllOntologies> loading;
@Inject
private Instance<OntologySelectorWithToolbar> selectorFactory;
@Inject @DataField("modify-classifiers-dialog-btn-ok")
private Button submitButton;
private Set<String> originalValue;
private List<String> value;
private Map<String, OntologySelectorWithToolbar> selectors = new HashMap<String, OntologySelectorWithToolbar>();
private OntologySelectorWithToolbar currentSelector;
/**
* Constructor.
*/
public ModifyClassifiersDialog() {
}
/**
* Called when the dialog is constructed by Errai.
*/
@PostConstruct
protected void onPostConstruct() {
submitButton.setEnabled(false);
}
/**
* Called when the user changes the drop-down value.
* @param event
*/
@EventHandler("modify-classifiers-dialog-ontology-selector")
public void onDropDownChange(ChangeEvent event) {
if (currentSelector != null)
currentSelector.setVisible(false);
String selectedBase = dropDown.getSelection();
OntologySelectorWithToolbar selector = selectors.get(selectedBase);
if (selector != null) {
selector.setVisible(true);
selector.expandAll();
currentSelector = selector;
} else {
currentSelector = null;
}
}
/**
* @see org.overlord.commons.gwt.client.local.widgets.ModalDialog#show()
*/
@Override
public void show() {
// Add the 'please wait' spinner
body.add(loading.get());
// Download all the ontologies
ontologyServiceCaller.getAll(false, this);
super.show();
}
/**
* Called when the user clicks the submit button.
* @param event
*/
@EventHandler("modify-classifiers-dialog-btn-ok")
protected void onSubmit(ClickEvent event) {
Set<String> newValue = new HashSet<String>();
Set<Entry<String,OntologySelectorWithToolbar>> entrySet = selectors.entrySet();
for (Entry<String, OntologySelectorWithToolbar> entry : entrySet) {
String base = entry.getKey();
OntologySelectorWithToolbar selector = entry.getValue();
Set<String> selection = selector.getSelection();
for (String id : selection) {
String uri = base + "#" + id;
newValue.add(uri);
}
}
this.value = new ArrayList<String>(newValue);
if (!newValue.equals(this.originalValue)) {
ValueChangeEvent.fire(this, this.value);
}
hide();
}
/**
* @see com.google.gwt.event.logical.shared.HasValueChangeHandlers#addValueChangeHandler(com.google.gwt.event.logical.shared.ValueChangeHandler)
*/
@Override
public HandlerRegistration addValueChangeHandler(ValueChangeHandler<List<String>> handler) {
return addHandler(handler, ValueChangeEvent.getType());
}
/**
* @see com.google.gwt.user.client.ui.HasValue#getValue()
*/
@Override
public List<String> getValue() {
return value;
}
/**
* @see com.google.gwt.user.client.ui.HasValue#setValue(java.lang.Object)
*/
@Override
public void setValue(List<String> value) {
setValue(value, false);
}
/**
* @see com.google.gwt.user.client.ui.HasValue#setValue(java.lang.Object, boolean)
*/
@Override
public void setValue(List<String> val, boolean fireEvents) {
List<String> value;
if(val==null){
value=new ArrayList<String>();
}
else{
value=val;
}
this.originalValue = new HashSet<String>(value);
this.value = new ArrayList<String>(value);
if (fireEvents) {
ValueChangeEvent.fire(this, this.value);
}
}
/**
* @see org.artificer.ui.client.local.services.callback.IServiceInvocationHandler#onReturn(java.lang.Object)
*/
@Override
public void onReturn(List<OntologyBean> ontologies) {
// Clear the loading spinner
body.clear();
// Set the options in the drop-down and add it to the dom.
dropDown.setOptions(ontologies);
body.add(dropDown);
// Create all the classifier selector w/ toolbar widgets - one for each ontology
for (OntologyBean ontologyBean : ontologies) {
OntologySelectorWithToolbar selectorWithToolbar = selectorFactory.get();
selectorWithToolbar.refresh(ontologyBean);
selectorWithToolbar.setVisible(false);
Set<String> selection = getValueFor(ontologyBean);
selectorWithToolbar.setSelection(selection);
body.add(selectorWithToolbar);
selectors.put(ontologyBean.getBase(), selectorWithToolbar);
}
this.submitButton.setEnabled(true);
}
/**
* @see org.artificer.ui.client.local.services.callback.IServiceInvocationHandler#onError(java.lang.Throwable)
*/
@Override
public void onError(Throwable error) {
notificationService.sendErrorNotification(i18n.format("modify-classifiers-dialog.error"), error);
}
/**
* Gets the current value sliced by the given ontology.
* @param ontologyBean
*/
private Set<String> getValueFor(OntologyBean ontologyBean) {
Set<String> items = new HashSet<String>();
for (String classifier : this.value) {
if (classifier.startsWith(ontologyBean.getBase() + "#")) {
items.add(classifier.substring(ontologyBean.getBase().length() + 1));
}
}
return items;
}
}