Java tutorial
/******************************************************************************* * Copyright (c) 2007, 2012 IBM Corporation and others. * 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 * * Contributors: * IBM Corporation - initial API and implementation *******************************************************************************/ package com.yannicklerestif.metapojos.plugin.project; import java.lang.reflect.InvocationTargetException; import java.util.ArrayList; import java.util.List; import org.eclipse.core.resources.IResource; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.IAdaptable; import org.eclipse.debug.core.DebugPlugin; import org.eclipse.debug.core.ILaunchConfiguration; import org.eclipse.debug.core.ILaunchConfigurationType; import org.eclipse.debug.core.ILaunchConfigurationWorkingCopy; import org.eclipse.debug.core.ILaunchManager; import org.eclipse.jdt.core.IJavaElement; import org.eclipse.jdt.core.IMember; import org.eclipse.jdt.core.IMethod; import org.eclipse.jdt.core.IType; import org.eclipse.jdt.core.JavaModelException; import org.eclipse.jdt.core.search.IJavaSearchScope; import org.eclipse.jdt.core.search.SearchEngine; import org.eclipse.jdt.debug.ui.launchConfigurations.JavaLaunchShortcut; import org.eclipse.jdt.internal.debug.ui.JDIDebugUIPlugin; import org.eclipse.jdt.internal.debug.ui.launcher.LauncherMessages; import org.eclipse.jdt.internal.debug.ui.launcher.MainMethodSearchEngine; import org.eclipse.jdt.launching.IJavaLaunchConfigurationConstants; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.operation.IRunnableContext; /** * Launch shortcut for local Java applications. * <p> * This class may be instantiated or sub-classed. * </p> * @since 3.3 */ public class MetaPojosLaunchShortcut extends JavaLaunchShortcut { /** * Returns the Java elements corresponding to the given objects. Members are translated * to corresponding declaring types where possible. * * @param objects selected objects * @return corresponding Java elements * @since 3.5 */ protected IJavaElement[] getJavaElements(Object[] objects) { List<IJavaElement> list = new ArrayList<IJavaElement>(objects.length); for (int i = 0; i < objects.length; i++) { Object object = objects[i]; if (object instanceof IAdaptable) { IJavaElement element = (IJavaElement) ((IAdaptable) object).getAdapter(IJavaElement.class); if (element != null) { if (element instanceof IMember) { // Use the declaring type if available IJavaElement type = ((IMember) element).getDeclaringType(); if (type != null) { element = type; } } list.add(element); } } } return list.toArray(new IJavaElement[list.size()]); } /* (non-Javadoc) * @see org.eclipse.jdt.debug.ui.launchConfigurations.JavaLaunchShortcut#createConfiguration(org.eclipse.jdt.core.IType) */ @Override protected ILaunchConfiguration createConfiguration(IType type) { ILaunchConfiguration config = null; ILaunchConfigurationWorkingCopy wc = null; try { ILaunchConfigurationType configType = getConfigurationType(); wc = configType.newInstance(null, getLaunchManager().generateLaunchConfigurationName(type.getTypeQualifiedName('.'))); wc.setAttribute(IJavaLaunchConfigurationConstants.ATTR_MAIN_TYPE_NAME, type.getFullyQualifiedName()); wc.setAttribute(IJavaLaunchConfigurationConstants.ATTR_PROJECT_NAME, type.getJavaProject().getElementName()); wc.setMappedResources(new IResource[] { type.getUnderlyingResource() }); config = wc.doSave(); } catch (CoreException exception) { MessageDialog.openError(JDIDebugUIPlugin.getActiveWorkbenchShell(), LauncherMessages.JavaLaunchShortcut_3, exception.getStatus().getMessage()); } return config; } /* (non-Javadoc) * @see org.eclipse.jdt.debug.ui.launchConfigurations.JavaLaunchShortcut#getConfigurationType() */ @Override protected ILaunchConfigurationType getConfigurationType() { return getLaunchManager().getLaunchConfigurationType(MetaPojosLaunchConfigurationDelegate.LAUNCHER_ID); } /** * Returns the singleton launch manager. * * @return launch manager */ private ILaunchManager getLaunchManager() { return DebugPlugin.getDefault().getLaunchManager(); } /* (non-Javadoc) * @see org.eclipse.jdt.debug.ui.launchConfigurations.JavaLaunchShortcut#findTypes(java.lang.Object[], org.eclipse.jface.operation.IRunnableContext) */ @Override protected IType[] findTypes(Object[] elements, IRunnableContext context) throws InterruptedException, CoreException { try { if (elements.length == 1) { IType type = isMainMethod(elements[0]); if (type != null) { return new IType[] { type }; } } IJavaElement[] javaElements = getJavaElements(elements); MainMethodSearchEngine engine = new MainMethodSearchEngine(); int constraints = IJavaSearchScope.SOURCES; constraints |= IJavaSearchScope.APPLICATION_LIBRARIES; IJavaSearchScope scope = SearchEngine.createJavaSearchScope(javaElements, constraints); return engine.searchMainMethods(context, scope, true); } catch (InvocationTargetException e) { throw (CoreException) e.getTargetException(); } } /** * Returns the smallest enclosing <code>IType</code> if the specified object is a main method, or <code>null</code> * @param o the object to inspect * @return the smallest enclosing <code>IType</code> of the specified object if it is a main method or <code>null</code> if it is not */ private IType isMainMethod(Object o) { if (o instanceof IAdaptable) { IAdaptable adapt = (IAdaptable) o; IJavaElement element = (IJavaElement) adapt.getAdapter(IJavaElement.class); if (element != null && element.getElementType() == IJavaElement.METHOD) { try { IMethod method = (IMethod) element; if (method.isMainMethod()) { return method.getDeclaringType(); } } catch (JavaModelException jme) { JDIDebugUIPlugin.log(jme); } } } return null; } /* (non-Javadoc) * @see org.eclipse.jdt.debug.ui.launchConfigurations.JavaLaunchShortcut#getTypeSelectionTitle() */ @Override protected String getTypeSelectionTitle() { return LauncherMessages.JavaApplicationLaunchShortcut_0; } /* (non-Javadoc) * @see org.eclipse.jdt.debug.ui.launchConfigurations.JavaLaunchShortcut#getEditorEmptyMessage() */ @Override protected String getEditorEmptyMessage() { return LauncherMessages.JavaApplicationLaunchShortcut_1; } /* (non-Javadoc) * @see org.eclipse.jdt.debug.ui.launchConfigurations.JavaLaunchShortcut#getSelectionEmptyMessage() */ @Override protected String getSelectionEmptyMessage() { return LauncherMessages.JavaApplicationLaunchShortcut_2; } }