Java tutorial
/////////////////////////////////////////////////////////////////////////////// // // PACKAGE : com.astra.ses.spell.gui.views // // FILE : NavigationView.java // // DATE : 2008-11-21 08:55 // // Copyright (C) 2008, 2010 SES ENGINEERING, Luxembourg S.A.R.L. // // By using this software in any way, you are agreeing to be bound by // the terms of this license. // // All rights reserved. This program and the accompanying materials // are made available under the terms of the Eclipse Public License v1.0 // which accompanies this distribution, and is available at // http://www.eclipse.org/legal/epl-v10.html // // NO WARRANTY // EXCEPT AS EXPRESSLY SET FORTH IN THIS AGREEMENT, THE PROGRAM IS PROVIDED // ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, EITHER // EXPRESS OR IMPLIED INCLUDING, WITHOUT LIMITATION, ANY WARRANTIES OR // CONDITIONS OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A // PARTICULAR PURPOSE. Each Recipient is solely responsible for determining // the appropriateness of using and distributing the Program and assumes all // risks associated with its exercise of rights under this Agreement , // including but not limited to the risks and costs of program errors, // compliance with applicable laws, damage to or loss of data, programs or // equipment, and unavailability or interruption of operations. // // DISCLAIMER OF LIABILITY // EXCEPT AS EXPRESSLY SET FORTH IN THIS AGREEMENT, NEITHER RECIPIENT NOR ANY // CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING WITHOUT LIMITATION // LOST PROFITS), HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) // ARISING IN ANY WAY OUT OF THE USE OR DISTRIBUTION OF THE PROGRAM OR THE // EXERCISE OF ANY RIGHTS GRANTED HEREUNDER, EVEN IF ADVISED OF THE // POSSIBILITY OF SUCH DAMAGES. // // Contributors: // SES ENGINEERING - initial API and implementation and/or initial documentation // // PROJECT : SPELL // // SUBPROJECT: SPELL GUI Client // /////////////////////////////////////////////////////////////////////////////// package com.astra.ses.spell.gui.views; import org.eclipse.jface.viewers.IOpenListener; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.OpenEvent; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.TreeSelection; import org.eclipse.jface.viewers.TreeViewer; import org.eclipse.swt.SWT; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.ui.part.ViewPart; import com.astra.ses.spell.gui.core.model.types.Level; import com.astra.ses.spell.gui.core.services.Logger; import com.astra.ses.spell.gui.core.services.ServiceManager; import com.astra.ses.spell.gui.model.IConfig; import com.astra.ses.spell.gui.model.commands.OpenProcedure; import com.astra.ses.spell.gui.model.commands.helpers.CommandHelper; import com.astra.ses.spell.gui.model.nav.ProcedureListContentProvider; import com.astra.ses.spell.gui.model.nav.ProcedureListLabelProvider; import com.astra.ses.spell.gui.model.nav.ProceduresStructureManager; import com.astra.ses.spell.gui.model.nav.content.NodeSorter; import com.astra.ses.spell.gui.model.nav.content.ProcedureNode; import com.astra.ses.spell.gui.services.ConfigurationManager; import com.astra.ses.spell.gui.services.ViewManager; /******************************************************************************* * @brief This view allows go over the list of available procedures and to * select one of them to be opened. * @date 09/10/07 * @author Rafael Chinchilla Camara (GMV) ******************************************************************************/ public class NavigationView extends ViewPart implements IOpenListener, ISelectionChangedListener { // ========================================================================= // STATIC DATA MEMBERS // ========================================================================= // PRIVATE ----------------------------------------------------------------- // PROTECTED --------------------------------------------------------------- // PUBLIC ------------------------------------------------------------------ public static final String ID = "com.astra.ses.spell.gui.views.NavigationView"; // ========================================================================= // INSTANCE DATA MEMBERS // ========================================================================= // PRIVATE ----------------------------------------------------------------- private TreeViewer m_procTree; /** Procedures structure manager */ private ProceduresStructureManager m_proceduresManager; // PROTECTED --------------------------------------------------------------- // PUBLIC ------------------------------------------------------------------ // ========================================================================= // ACCESSIBLE METHODS // ========================================================================= /*********************************************************************** * Create the view contents. * * @param parent The top composite of the view **********************************************************************/ public void createPartControl(Composite parent) { Logger.debug("Created", Level.INIT, this); FillLayout layout = (FillLayout) parent.getLayout(); layout.spacing = 5; layout.type = SWT.VERTICAL; m_proceduresManager = new ProceduresStructureManager(); m_proceduresManager.setView(this); m_procTree = new TreeViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL | SWT.BORDER); // Set the providers m_procTree.setContentProvider(new ProcedureListContentProvider()); m_procTree.setLabelProvider(new ProcedureListLabelProvider()); m_procTree.setSorter(new NodeSorter()); // Set the procedure manager as the model provider m_procTree.setInput(m_proceduresManager.getRootElements()); // Register the navigation view in the selection service getSite().setSelectionProvider(m_procTree); // Register this view as open listener as well m_procTree.addOpenListener(this); m_procTree.addSelectionChangedListener(this); // Register the view as a service listener for the procedure manager // in order to receive updates when the list of available procedures // may have changed. ViewManager vmgr = (ViewManager) ServiceManager.get(ViewManager.ID); vmgr.registerView(ID, this); } /*********************************************************************** * Destroy the view. **********************************************************************/ public void dispose() { m_proceduresManager.setView(null); super.dispose(); Logger.debug("Disposed", Level.PROC, this); } /*********************************************************************** * Receive the input focus. **********************************************************************/ public void setFocus() { m_procTree.getControl().setFocus(); } /*********************************************************************** * Refresh the view **********************************************************************/ public void refresh() { m_procTree.setInput(m_proceduresManager.getRootElements()); m_procTree.refresh(); } /*********************************************************************** * Obtain the model **********************************************************************/ public ProceduresStructureManager getModel() { return m_proceduresManager; } /*********************************************************************** * Open event on double click **********************************************************************/ @Override public void open(OpenEvent event) { TreeSelection sel = (TreeSelection) event.getSelection(); try { ProcedureNode item = (ProcedureNode) sel.getFirstElement(); // Open procedures only, ignore categories String category = item.getProcID(); if (category == null || category.equals("") || category.equals("CATEGORY")) { return; } CommandHelper.execute(OpenProcedure.ID); } catch (Exception e) { return; } } /*********************************************************************** * Selection changed on the tree **********************************************************************/ @Override public void selectionChanged(SelectionChangedEvent event) { TreeSelection sel = (TreeSelection) event.getSelection(); ConfigurationManager cfg = (ConfigurationManager) ServiceManager.get(ConfigurationManager.ID); try { ProcedureNode item = (ProcedureNode) sel.getFirstElement(); cfg.setSelection(IConfig.ID_NAVIGATION_VIEW_SELECTION, item.getProcID()); } catch (Exception ex) { cfg.setSelection(IConfig.ID_NAVIGATION_VIEW_SELECTION, null); } } }