org.activiti.explorer.ui.MainMenuBar.java Source code

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Here is the source code for org.activiti.explorer.ui.MainMenuBar.java

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/* 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.activiti.explorer.ui;

import java.util.HashMap;
import java.util.Map;

import org.activiti.explorer.ExplorerApp;
import org.activiti.explorer.I18nManager;
import org.activiti.explorer.LoggedInUser;
import org.activiti.explorer.Messages;
import org.activiti.explorer.ViewManager;
import org.activiti.explorer.ui.profile.ChangePasswordPopupWindow;

import com.vaadin.terminal.Resource;
import com.vaadin.ui.Alignment;
import com.vaadin.ui.Button;
import com.vaadin.ui.Button.ClickEvent;
import com.vaadin.ui.Button.ClickListener;
import com.vaadin.ui.HorizontalLayout;
import com.vaadin.ui.Label;
import com.vaadin.ui.MenuBar;
import com.vaadin.ui.MenuBar.Command;
import com.vaadin.ui.MenuBar.MenuItem;
import com.vaadin.ui.themes.Reindeer;

/**
 * @author Joram Barrez
 * @author Frederik Heremans
 */
@SuppressWarnings("serial")
public class MainMenuBar extends HorizontalLayout {

    private static final long serialVersionUID = 1L;

    protected ViewManager viewManager;
    protected I18nManager i18nManager;
    protected Map<String, Button> menuItemButtons;
    protected String currentMainNavigation;

    public MainMenuBar() {
        this.viewManager = ExplorerApp.get().getViewManager();
        this.i18nManager = ExplorerApp.get().getI18nManager();

        menuItemButtons = new HashMap<String, Button>();
        init();
    }

    /**
     * Highlights the given main navigation in the menubar.
     */
    public synchronized void setMainNavigation(String navigation) {
        if (currentMainNavigation != null) {
            menuItemButtons.get(currentMainNavigation).removeStyleName(ExplorerLayout.STYLE_ACTIVE);
        }
        currentMainNavigation = navigation;

        Button current = menuItemButtons.get(navigation);
        if (current != null) {
            current.addStyleName(ExplorerLayout.STYLE_ACTIVE);
        }
    }

    protected void init() {
        setHeight(54, UNITS_PIXELS);
        setWidth(100, UNITS_PERCENTAGE);

        setMargin(false, true, false, false);

        initTitle();
        initButtons();
        initProfileButton();
    }

    protected void initButtons() {
        // TODO: fixed widths based on i18n strings?
        Button taskButton = addMenuButton(ViewManager.MAIN_NAVIGATION_TASKS,
                i18nManager.getMessage(Messages.MAIN_MENU_TASKS), Images.MAIN_MENU_TASKS, false, 80);
        taskButton.addListener(new ShowTasksClickListener());
        menuItemButtons.put(ViewManager.MAIN_NAVIGATION_TASKS, taskButton);

        Button flowsButton = addMenuButton(ViewManager.MAIN_NAVIGATION_FLOWS,
                i18nManager.getMessage(Messages.MAIN_MENU_FLOWS), Images.MAIN_MENU_FLOWS, false, 80);
        flowsButton.addListener(new ShowFlowsClickListener());
        menuItemButtons.put(ViewManager.MAIN_NAVIGATION_FLOWS, flowsButton);

        if (ExplorerApp.get().getLoggedInUser().isAdmin()) {
            Button manageButton = addMenuButton(ViewManager.MAIN_NAVIGATION_MANAGE,
                    i18nManager.getMessage(Messages.MAIN_MENU_MANAGEMENT), Images.MAIN_MENU_MANAGE, false, 90);
            manageButton.addListener(new ShowManagementClickListener());
            menuItemButtons.put(ViewManager.MAIN_NAVIGATION_MANAGE, manageButton);
        }
    }

    protected void initTitle() {
        Label title = new Label();
        title.addStyleName(Reindeer.LABEL_H1);
        title.addStyleName(ExplorerLayout.STYLE_APPLICATION_LOGO);

        addComponent(title);

        setExpandRatio(title, 1.0f);
    }

    protected Button addMenuButton(String type, String label, Resource icon, boolean active, float width) {
        Button button = new Button(label);
        button.addStyleName(type);
        button.addStyleName(ExplorerLayout.STYLE_MAIN_MENU_BUTTON);
        button.addStyleName(Reindeer.BUTTON_LINK);
        button.setHeight(54, UNITS_PIXELS);
        button.setIcon(icon);
        button.setWidth(width, UNITS_PIXELS);

        addComponent(button);
        setComponentAlignment(button, Alignment.TOP_CENTER);

        return button;
    }

    protected void initProfileButton() {
        final LoggedInUser user = ExplorerApp.get().getLoggedInUser();

        // User name + link to profile 
        MenuBar profileMenu = new MenuBar();
        profileMenu.addStyleName(ExplorerLayout.STYLE_HEADER_PROFILE_BOX);
        MenuItem rootItem = profileMenu.addItem(user.getFirstName() + " " + user.getLastName(), null);
        rootItem.setStyleName(ExplorerLayout.STYLE_HEADER_PROFILE_MENU);

        // Show profile
        rootItem.addItem(i18nManager.getMessage(Messages.PROFILE_SHOW), new Command() {
            public void menuSelected(MenuItem selectedItem) {
                ExplorerApp.get().getViewManager().showProfilePopup(user.getId());
            }
        });

        // Edit profile
        rootItem.addItem(i18nManager.getMessage(Messages.PROFILE_EDIT), new Command() {

            public void menuSelected(MenuItem selectedItem) {
                // TODO: Show in edit-mode
                ExplorerApp.get().getViewManager().showProfilePopup(user.getId());
            }
        });

        // Change password
        rootItem.addItem(i18nManager.getMessage(Messages.PASSWORD_CHANGE), new Command() {
            public void menuSelected(MenuItem selectedItem) {
                ExplorerApp.get().getViewManager().showPopupWindow(new ChangePasswordPopupWindow());
            }
        });

        rootItem.addSeparator();
        // Logout
        rootItem.addItem(i18nManager.getMessage(Messages.HEADER_LOGOUT), new Command() {
            public void menuSelected(MenuItem selectedItem) {
                ExplorerApp.get().close();
            }
        });

        addComponent(profileMenu);
        setComponentAlignment(profileMenu, Alignment.TOP_RIGHT);
        setExpandRatio(profileMenu, 1.0f);
    }

    // Listener classes
    private class ShowTasksClickListener implements ClickListener {

        public void buttonClick(ClickEvent event) {
            ExplorerApp.get().getViewManager().showCasesPage();
        }
    }

    private class ShowFlowsClickListener implements ClickListener {

        public void buttonClick(ClickEvent event) {
            ExplorerApp.get().getViewManager().showFlowPage();
        }
    }

    private class ShowManagementClickListener implements ClickListener {

        public void buttonClick(ClickEvent event) {
            ExplorerApp.get().getViewManager().showDatabasePage();
        }
    }

}