Java tutorial
/* * $Id$ * * SARL is an general-purpose agent programming language. * More details on http://www.sarl.io * * Copyright (C) 2014-2016 the original authors or authors. * * 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 io.sarl.eclipse.properties; import com.google.common.base.Objects; import com.google.common.base.Strings; import org.eclipse.core.resources.IProject; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.QualifiedName; import org.eclipse.jdt.internal.ui.preferences.PropertyAndPreferencePage; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import io.sarl.eclipse.SARLEclipsePlugin; import io.sarl.eclipse.runtime.ISREInstall; import io.sarl.eclipse.runtime.SARLRuntime; import io.sarl.eclipse.runtime.SREConfigurationBlock; /** Property page for selecting the SARL runtime environment * associated to this page. * * @author $Author: sgalland$ * @version $FullVersion$ * @mavengroupid $GroupId$ * @mavenartifactid $ArtifactId$ */ public class RuntimeEnvironmentPropertyPage extends PropertyAndPreferencePage { /** Identifier of the property page. */ public static final String PROPERTY_PAGE_ID = "io.sarl.eclipse.properties.SRE"; //$NON-NLS-1$ /** Identifier of the preference page. */ public static final String PREFERENCE_PAGE_ID = "io.sarl.eclipse.preferences.SREsPreferencePage"; //$NON-NLS-1$ /** Identifier of the context of the properties managed by this page. */ public static final String PROPERTY_QUALIFIER = "io.sarl.eclipse.launch.SRE"; //$NON-NLS-1$ /** Name of the property that contains the SRE install id. */ public static final String PROPERTY_NAME_SRE_INSTALL_ID = "SRE_INSTALL_ID"; //$NON-NLS-1$ /** Name of the property that indicates if the system-wide SRE should be used.. */ public static final String PROPERTY_NAME_USE_SYSTEM_WIDE_SRE = "USE_SYSTEM_WIDE_SRE"; //$NON-NLS-1$ /** Name of the property that indicates if the project has specific options. */ public static final String PROPERTY_NAME_HAS_PROJECT_SPECIFIC = "HAS_PROJECT_SPECIFIC"; //$NON-NLS-1$ private SREConfigurationBlock sreBlock; /** * Constructor for RuntimeEnvironmentPropertyPage. */ public RuntimeEnvironmentPropertyPage() { super(); } /** Create a qualified name with the given name. * * @param name - the name. * @return the qualified name. */ public static QualifiedName qualify(String name) { return new QualifiedName(PROPERTY_QUALIFIER, name); } @Override protected String getPreferencePageID() { return PREFERENCE_PAGE_ID; } @Override protected String getPropertyPageID() { return PROPERTY_PAGE_ID; } @Override protected Control createPreferenceContent(Composite composite) { this.sreBlock = new SREConfigurationBlock(true, null, null); Control ctrl = this.sreBlock.createControl(composite); this.sreBlock.initialize(); try { String useSystemWide = getProject().getPersistentProperty(qualify(PROPERTY_NAME_USE_SYSTEM_WIDE_SRE)); String sreInstallId = getProject().getPersistentProperty(qualify(PROPERTY_NAME_SRE_INSTALL_ID)); ISREInstall sre = SARLRuntime.getSREFromId(sreInstallId); boolean notify = this.sreBlock.getNotify(); try { this.sreBlock.setNotify(false); this.sreBlock.selectSpecificSRE(sre); if (Boolean.parseBoolean( Objects.firstNonNull(Strings.emptyToNull(useSystemWide), Boolean.TRUE.toString()))) { this.sreBlock.selectSystemWideSRE(); } else { this.sreBlock.selectSpecificSRE(); } } finally { this.sreBlock.setNotify(notify); } } catch (CoreException e) { SARLEclipsePlugin.getDefault().log(e); } return ctrl; } @Override protected boolean hasProjectSpecificOptions(IProject project) { try { String value = project.getPersistentProperty(qualify(PROPERTY_NAME_HAS_PROJECT_SPECIFIC)); return Boolean.parseBoolean(value); } catch (CoreException e) { SARLEclipsePlugin.getDefault().log(e); } return false; } /** Save the flag that indicates if the specific project options must be * used. * * @param project - the project. * @param useSpecificOptions - indicates if the specifi options must be used. * @return <code>true</code> if the property was saved successfully. */ @SuppressWarnings("static-method") protected boolean saveProjectSpecificOptions(IProject project, boolean useSpecificOptions) { if (project != null) { try { project.setPersistentProperty(qualify(PROPERTY_NAME_HAS_PROJECT_SPECIFIC), Boolean.toString(useSpecificOptions)); return true; } catch (CoreException e) { SARLEclipsePlugin.getDefault().log(e); } } return false; } @Override protected void performDefaults() { this.sreBlock.selectSRE(null); super.performDefaults(); } @Override public boolean performOk() { IProject prj = getProject(); if (prj == null || !super.performOk() || !saveProjectSpecificOptions(getProject(), useProjectSettings())) { return false; } ISREInstall projectSRE = this.sreBlock.getSelectedSRE(); boolean isSystemWide = this.sreBlock.isSystemWideDefaultSRE(); String id = (projectSRE == null) ? null : projectSRE.getId(); try { prj.setPersistentProperty(qualify(PROPERTY_NAME_USE_SYSTEM_WIDE_SRE), Boolean.toString(isSystemWide)); prj.setPersistentProperty(qualify(PROPERTY_NAME_SRE_INSTALL_ID), id); return true; } catch (CoreException e) { SARLEclipsePlugin.getDefault().log(e); } return false; } }