/*
* Copyright 2014-2016 CyberVision, 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.kaaproject.kaa.server.admin.client.mvp.activity;
import com.google.gwt.activity.shared.AbstractActivity;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.shared.EventBus;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.place.shared.Place;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.AcceptsOneWidget;
import org.kaaproject.avro.ui.gwt.client.util.BusyAsyncCallback;
import org.kaaproject.avro.ui.gwt.client.widget.grid.AbstractGrid;
import org.kaaproject.avro.ui.gwt.client.widget.grid.event.RowActionEvent;
import org.kaaproject.avro.ui.gwt.client.widget.grid.event.RowActionEventHandler;
import org.kaaproject.kaa.common.dto.HasId;
import org.kaaproject.kaa.server.admin.client.mvp.ClientFactory;
import org.kaaproject.kaa.server.admin.client.mvp.activity.grid.AbstractDataProvider;
import org.kaaproject.kaa.server.admin.client.mvp.event.data.DataEvent;
import org.kaaproject.kaa.server.admin.client.mvp.event.data.DataEventHandler;
import org.kaaproject.kaa.server.admin.client.mvp.place.TreePlace;
import org.kaaproject.kaa.server.admin.client.mvp.view.BaseListView;
import org.kaaproject.kaa.server.admin.client.util.Utils;
import java.util.ArrayList;
import java.util.List;
public abstract class AbstractListActivity<T extends HasId, P extends TreePlace>
extends AbstractActivity implements BaseListView.Presenter {
protected final ClientFactory clientFactory;
protected final Class<T> dataClass;
protected AbstractDataProvider<T, String> dataProvider;
protected List<HandlerRegistration> registrations = new ArrayList<HandlerRegistration>();
protected BaseListView<T> listView;
protected P place;
/**
* The constructor.
*/
public AbstractListActivity(P place, Class<T> dataClass, ClientFactory clientFactory) {
this.place = place;
this.clientFactory = clientFactory;
this.dataClass = dataClass;
}
@Override
public void start(AcceptsOneWidget containerWidget, EventBus eventBus) {
listView = getView();
this.dataProvider = getDataProvider(listView.getListWidget());
listView.setPresenter(this);
bind(eventBus);
containerWidget.setWidget(listView.asWidget());
}
protected abstract BaseListView<T> getView();
protected abstract AbstractDataProvider<T, String> getDataProvider(
AbstractGrid<T, String> dataGrid);
protected abstract Place newEntityPlace();
protected abstract Place existingEntityPlace(String id);
protected abstract void deleteEntity(String id, AsyncCallback<Void> callback);
@Override
public void onStop() {
for (HandlerRegistration registration : registrations) {
registration.removeHandler();
}
registrations.clear();
}
/**
* Navigate to a new Place in the browser.
*/
public void goTo(Place place) {
clientFactory.getPlaceController().goTo(place);
}
/**
* Bind method.
*
* @param eventBus the event bus
*/
public void bind(final EventBus eventBus) {
listView.clearError();
registrations.add(listView.getAddButton().addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
goTo(newEntityPlace());
}
}));
registrations.add(listView.getRowActionsSource().addRowActionHandler(
new RowActionEventHandler<String>() {
@Override
public void onRowAction(RowActionEvent<String> event) {
String id = event.getClickedId();
if (event.getAction() == RowActionEvent.CLICK) {
goTo(existingEntityPlace(id));
} else if (event.getAction() == RowActionEvent.DELETE) {
deleteEntity(id, new BusyAsyncCallback<Void>() {
@Override
public void onFailureImpl(Throwable caught) {
Utils.handleException(caught, listView);
}
@Override
public void onSuccessImpl(Void result) {
}
});
}
onCustomRowAction(event);
}
}));
registrations.add(eventBus.addHandler(DataEvent.getType(), new DataEventHandler() {
@Override
public void onDataChanged(DataEvent event) {
if (event.checkClass(dataClass)) {
dataProvider.reload();
onCustomDataChangedEvent(event);
}
}
}));
final Place previousPlace = place.getPreviousPlace();
if (previousPlace != null) {
listView.setBackEnabled(true);
registrations.add(listView.getBackButton().addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
goTo(previousPlace);
}
}));
}
}
protected void onCustomRowAction(RowActionEvent<String> event) {
}
protected void onCustomDataChangedEvent(DataEvent event) {
}
}