com.gwtplatform.mvp.client.ViewWithUiHandlers Maven / Gradle / Ivy
/*
* Copyright 2011 ArcBees 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 com.gwtplatform.mvp.client;
import java.util.logging.Logger;
/**
* Base class for a {@link View} that implements the {@link HasUiHandlers}
* interface. You should always call {@link #setUiHandlers(UiHandlers)} from your
* presenter's constructor.
*
* Important! Never call {@link #getUiHandlers()} inside your constructor
* since the {@link UiHandlers} are not yet set.
*
* @param Your {@link UiHandlers} interface type.
*/
public abstract class ViewWithUiHandlers extends ViewImpl
implements HasUiHandlers {
private static final Logger logger = Logger.getLogger(ViewWithUiHandlers.class.getName());
private C uiHandlers;
/**
* Access the {@link UiHandlers} associated with this {@link View}.
*
* Important! Never call {@link #getUiHandlers()} inside your constructor
* since the {@link UiHandlers} are not yet set.
*
* @return The {@link UiHandlers}, or {@code null} if they are not yet set.
*/
protected C getUiHandlers() {
if (uiHandlers == null) {
logger.severe("uiHandlers are not set. Did you call getUiHandlers() from your view's constructor?");
}
return uiHandlers;
}
@Override
public void setUiHandlers(final C uiHandlers) {
this.uiHandlers = uiHandlers;
}
}