org.jacpfx.rcp.delegator.ComponentDelegator Maven / Gradle / Ivy
/************************************************************************
*
* Copyright (C) 2010 - 2014
*
* [FX2ComponentDelegator.java]
* JACPFX Project (https://github.com/JacpFX/JacpFX/)
* All rights reserved.
*
* 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.jacpfx.rcp.delegator;
import javafx.application.Platform;
import javafx.event.Event;
import javafx.event.EventHandler;
import org.jacpfx.api.component.Component;
import org.jacpfx.api.component.Perspective;
import org.jacpfx.api.component.SubComponent;
import org.jacpfx.api.handler.ComponentHandler;
import org.jacpfx.api.message.Message;
import org.jacpfx.api.util.QueueSizes;
import org.jacpfx.rcp.context.JacpContextImpl;
import org.jacpfx.rcp.message.MessageImpl;
import org.jacpfx.rcp.registry.PerspectiveRegistry;
import org.jacpfx.rcp.util.FXUtil;
import org.jacpfx.rcp.util.ShutdownThreadsHandler;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;
import java.util.logging.Logger;
/**
* The component delegator handles a component target change, find the correct
* perspective an add component to correct perspective
*
* @author Andy Moncsek
*
*/
public class ComponentDelegator extends Thread implements
org.jacpfx.api.delegator.ComponentDelegator, Event, Object> {
private final Logger logger = Logger.getLogger(this.getClass().getName());
private final BlockingQueue, Event, Object>> componentDelegateQueue = new ArrayBlockingQueue<>(
QueueSizes.COMPONENT_DELEGATOR_QUEUE_SIZE);
private ComponentHandler, Event, Object>, Message> componentHandler;
public ComponentDelegator() {
super("ComponentDelegator");
ShutdownThreadsHandler.registerThread(this);
}
@Override
public final void run() {
while (!Thread.interrupted()) {
try {
final SubComponent, Event, Object> component = this.componentDelegateQueue
.take();
final String targetId = JacpContextImpl.class.cast(component.getContext()).getExecutionTarget();
this.delegateTargetChange(targetId, component);
} catch (final InterruptedException e) {
logger.info("queue in ComponentDelegator interrupted");
break;
}
}
}
private void delegateTargetChange(final String target,
final SubComponent, Event, Object> component) {
// find responsible perspective
final Perspective, Event, Object> responsiblePerspective = PerspectiveRegistry.findPerspectiveById(target);
// find correct target in perspective
if (responsiblePerspective != null) {
this.handleTargetHit(responsiblePerspective, component);
} // End if
else {
this.handleTargetMiss();
} // End else
}
/**
* handle component delegate when target was found
*
* @param responsiblePerspective
* @param component
*/
private void handleTargetHit(
final Perspective, Event, Object> responsiblePerspective,
final SubComponent, Event, Object> component) {
activateInactiveComponent(responsiblePerspective);
responsiblePerspective.registerComponent(component);
responsiblePerspective.getComponentHandler().initComponent(
new MessageImpl(component.getContext().getId(), component.getContext().getId(), FXUtil.MessageUtil.INIT, null),
component);
}
private void activateInactiveComponent(
final Perspective, Event, Object> responsiblePerspective) {
if (!responsiblePerspective.getContext().isActive()) {
// 1. init perspective (do not register component before perspective
// is active, otherwise component will be handled once again)
this.handleInActivePerspective(responsiblePerspective,
new MessageImpl(responsiblePerspective.getContext().getId(),
responsiblePerspective.getContext().getId(), FXUtil.MessageUtil.INIT, null));
} // End if
}
private , Object>> void handleInActivePerspective(
final P component, final Message action) {
component.getContext().setActive(true);
//noinspection unchecked
Platform.runLater(() -> ComponentDelegator.this.componentHandler
.initComponent(
action,
(Perspective, Event, Object>) component));
}
/**
* handle component delegate when no target found
*/
private void handleTargetMiss() {
throw new UnsupportedOperationException(
"No responsible perspective found. Handling not implemented yet.");
}
@SuppressWarnings("unchecked")
@Override
public , Object>> void setPerspectiveHandler(
final ComponentHandler> handler) {
this.componentHandler = (ComponentHandler, Event, Object>, Message>) handler;
}
@Override
public BlockingQueue, Event, Object>> getComponentDelegateQueue() {
return this.componentDelegateQueue;
}
@Override
public void delegateComponent(
final SubComponent, Event, Object> component) {
try {
this.componentDelegateQueue.put(component);
} catch (InterruptedException e) {
e.printStackTrace();
//TODO handle exception global
}
}
}