Java tutorial
/////////////////////////////////////////////////////////////////////////////// // // PACKAGE : com.astra.ses.spell.gui.presentation.text.preferences // // FILE : TextViewPreferencePage.java // // DATE : Aug 20, 2013 // // Copyright (C) 2008, 2014 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 // /////////////////////////////////////////////////////////////////////////////// package com.astra.ses.spell.gui.presentation.text.preferences; import org.eclipse.jface.preference.PreferencePage; import org.eclipse.jface.util.IPropertyChangeListener; import org.eclipse.jface.util.PropertyChangeEvent; import org.eclipse.swt.SWT; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Text; import org.eclipse.ui.IWorkbench; import org.eclipse.ui.IWorkbenchPreferencePage; import com.astra.ses.spell.gui.core.interfaces.ServiceManager; import com.astra.ses.spell.gui.preferences.interfaces.IConfigurationManager; import com.astra.ses.spell.gui.preferences.keys.PropertyKey; public class TextViewPreferencePage extends PreferencePage implements IWorkbenchPreferencePage, IPropertyChangeListener { /** Configuration manager */ private IConfigurationManager m_conf; /** Show date line or not */ private Button m_showTimestamp; /** Max items kept for each code line */ private Text m_lineHistoryItems; /*************************************************************************** * **************************************************************************/ public TextViewPreferencePage() { super(); setDescription("Preferences for Text View presentation\n"); } /*************************************************************************** * **************************************************************************/ public void init(IWorkbench workbench) { m_conf = (IConfigurationManager) ServiceManager.get(IConfigurationManager.class); m_conf.addPropertyChangeListener(this); } /*************************************************************************** * Get the configuration manager to use for retrieving or storing * preferences values * * @return **************************************************************************/ public IConfigurationManager getConfigurationManager() { return m_conf; } /*************************************************************************** * **************************************************************************/ @Override public boolean performOk() { if (okToLeave()) { performApply(); m_conf.removePropertyChangeListener(this); } return okToLeave(); } /*************************************************************************** * **************************************************************************/ @Override public boolean performCancel() { m_conf.removePropertyChangeListener(this); return super.performCancel(); } /*************************************************************************** * **************************************************************************/ @Override protected Control createContents(Composite parent) { // CONTAINER Composite container = new Composite(parent, SWT.NONE); GridLayout layout = new GridLayout(3, true); GridData layoutData = new GridData(GridData.FILL_BOTH); container.setLayout(layout); container.setLayoutData(layoutData); // Show date line Label showDateLineLabel = new Label(container, SWT.NONE); showDateLineLabel.setText("Show timestamp on each line"); m_showTimestamp = new Button(container, SWT.CHECK); m_showTimestamp.setSelection(true); new Label(container, SWT.NONE); // Max lines kept new Label(container, SWT.NONE).setText("Line history"); m_lineHistoryItems = new Text(container, SWT.BORDER | SWT.RIGHT); m_lineHistoryItems.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); new Label(container, SWT.NONE).setText("items"); refreshPage(); return container; } /*************************************************************************** * **************************************************************************/ @Override public void propertyChange(PropertyChangeEvent event) { String property = event.getProperty(); if (property.equals("shall_refresh_page")) { refreshPage(); } } /*************************************************************************** * **************************************************************************/ @Override public void performApply() { // time line boolean timeLine = m_showTimestamp.getSelection(); m_conf.setBooleanProperty(PropertyKey.TEXT_TIMESTAMP, timeLine); // history items String lineHistoryItems = m_lineHistoryItems.getText(); m_conf.setProperty(PropertyKey.TEXT_HISTORY_ITEMS, lineHistoryItems); } /*************************************************************************** * **************************************************************************/ public void refreshPage() { boolean showDateLine = m_conf.getBooleanProperty(PropertyKey.TEXT_TIMESTAMP); m_showTimestamp.setSelection(showDateLine); String lineHistoryItems = m_conf.getProperty(PropertyKey.TEXT_HISTORY_ITEMS); m_lineHistoryItems.setText(lineHistoryItems); } }