Java tutorial
/* 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 org.activiti.explorer.ui.custom.ToolBar; import com.vaadin.ui.Component; import com.vaadin.ui.GridLayout; /** * Superclass for one view pages * * @author Tijs Rademakers */ public abstract class AbstractOneViewPage extends AbstractPage { private static final long serialVersionUID = 1L; /** * Override this method (and call super()) when you want to influence the UI. */ protected void initUi() { addMainLayout(); setSizeFull(); addMenuBar(); } /** * Subclasses are expected to provide their own menuBar. */ protected void addMenuBar() { // Remove any old menu bar String activeEntry = null; if (toolBar != null) { activeEntry = toolBar.getCurrentEntryKey(); grid.removeComponent(toolBar); } // Create menu bar ToolBar menuBar = createMenuBar(); if (menuBar != null) { toolBar = createMenuBar(); grid.addComponent(toolBar, 0, 0); if (activeEntry != null) { toolBar.setActiveEntry(activeEntry); } } } protected void addMainLayout() { grid = new GridLayout(1, 2); grid.setSizeFull(); // Height division grid.setRowExpandRatio(1, 1.0f); setCompositionRoot(grid); } protected void setDetailComponent(Component detail) { if (grid.getComponent(0, 1) != null) { grid.removeComponent(0, 1); } if (detail != null) { grid.addComponent(detail, 0, 1); } } protected Component getDetailComponent() { return grid.getComponent(0, 1); } }