de.hdawg.wci.portlets.bookmarks.client.AppController.java Source code

Introduction

Here is the source code for de.hdawg.wci.portlets.bookmarks.client.AppController.java

Source

/*
 * Copyright 2010
 *
 * 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 de.hdawg.wci.portlets.bookmarks.client;

import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.logical.shared.ValueChangeHandler;
import com.google.gwt.event.shared.HandlerManager;
import com.google.gwt.user.client.History;
import com.google.gwt.user.client.ui.HasWidgets;

import de.hdawg.wci.portlets.bookmarks.client.event.AdminBookmarksCancelledEvent;
import de.hdawg.wci.portlets.bookmarks.client.event.AdminBookmarksCancelledEventHandler;
import de.hdawg.wci.portlets.bookmarks.client.event.AdminBookmarksEvent;
import de.hdawg.wci.portlets.bookmarks.client.event.AdminBookmarksEventHandler;
import de.hdawg.wci.portlets.bookmarks.client.event.AdminBookmarksSavedEvent;
import de.hdawg.wci.portlets.bookmarks.client.event.AdminBookmarksSavedEventHandler;
import de.hdawg.wci.portlets.bookmarks.client.presenter.AdminBookmarksPresenter;
import de.hdawg.wci.portlets.bookmarks.client.presenter.BookmarksPresenter;
import de.hdawg.wci.portlets.bookmarks.client.presenter.Presenter;
import de.hdawg.wci.portlets.bookmarks.client.view.AdminBookmarksView;
import de.hdawg.wci.portlets.bookmarks.client.view.BookmarksView;

/**
 * @author Hauke Wesselmann
 */
public class AppController implements Presenter, ValueChangeHandler<String> {
    private final HandlerManager eventBus;
    private final BookmarkServiceAsync rpcService;
    private HasWidgets container;

    public AppController(BookmarkServiceAsync rpcService, HandlerManager eventBus) {
        this.eventBus = eventBus;
        this.rpcService = rpcService;
        bind();
    }

    private void bind() {
        History.addValueChangeHandler(this);

        eventBus.addHandler(AdminBookmarksEvent.TYPE, new AdminBookmarksEventHandler() {
            @Override
            public void onAdminBookmarks(AdminBookmarksEvent event) {
                doAdminBookmarks();
            }
        });

        eventBus.addHandler(AdminBookmarksSavedEvent.TYPE, new AdminBookmarksSavedEventHandler() {
            @Override
            public void onAdminBookmarksSaved(AdminBookmarksSavedEvent event) {
                doAdminBookmarksSaved();
            }
        });

        eventBus.addHandler(AdminBookmarksCancelledEvent.TYPE, new AdminBookmarksCancelledEventHandler() {
            @Override
            public void onCancelAdmin(AdminBookmarksCancelledEvent event) {
                doAdminBookmarksCancelled();
            }
        });
    }

    private void doAdminBookmarks() {
        History.newItem("admin");
    }

    private void doAdminBookmarksCancelled() {
        History.newItem("list");
    }

    private void doAdminBookmarksSaved() {
        History.newItem("list");
    }

    public void go(final HasWidgets container) {
        this.container = container;

        if ("".equals(History.getToken())) {
            History.newItem("list");
        } else {
            History.fireCurrentHistoryState();
        }
    }

    public void onValueChange(ValueChangeEvent<String> event) {
        String token = event.getValue();

        if (token != null) {
            Presenter presenter = null;

            if (token.equals("list")) {
                presenter = new BookmarksPresenter(rpcService, eventBus, new BookmarksView());
            } else if (token.equals("admin")) {
                presenter = new AdminBookmarksPresenter(rpcService, eventBus, new AdminBookmarksView());
            }

            if (presenter != null) {
                presenter.go(container);
            }
        }
    }
}