Java tutorial
/******************************************************************************* * Copyright (c) 2005, 2010 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.redhat.ceylon.eclipse.core.launch; import static com.redhat.ceylon.eclipse.ui.CeylonPlugin.PLUGIN_ID; import java.lang.reflect.InvocationTargetException; import org.eclipse.core.resources.IProject; import org.eclipse.core.resources.IResource; import org.eclipse.core.resources.IWorkspace; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.core.runtime.CoreException; import org.eclipse.core.runtime.IStatus; import org.eclipse.debug.core.ILaunchConfiguration; import org.eclipse.debug.core.ILaunchConfigurationWorkingCopy; import org.eclipse.debug.internal.ui.SWTFactory; import org.eclipse.jdt.core.IJavaElement; import org.eclipse.jdt.core.IJavaModel; import org.eclipse.jdt.core.IJavaProject; import org.eclipse.jdt.core.IType; import org.eclipse.jdt.core.JavaCore; import org.eclipse.jdt.core.JavaModelException; import org.eclipse.jdt.core.search.IJavaSearchScope; import org.eclipse.jdt.core.search.SearchEngine; import org.eclipse.jdt.internal.debug.ui.IJavaDebugHelpContextIds; import org.eclipse.jdt.internal.debug.ui.JDIDebugUIPlugin; import org.eclipse.jdt.internal.debug.ui.launcher.DebugTypeSelectionDialog; import org.eclipse.jdt.internal.debug.ui.launcher.LauncherMessages; import org.eclipse.jdt.internal.debug.ui.launcher.MainMethodSearchEngine; import org.eclipse.jdt.internal.debug.ui.launcher.SharedJavaMainTab; import org.eclipse.jdt.launching.IJavaLaunchConfigurationConstants; import org.eclipse.jdt.ui.ISharedImages; import org.eclipse.jdt.ui.JavaUI; import org.eclipse.jface.window.Window; import org.eclipse.swt.graphics.Image; 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.ui.PlatformUI; /** * A launch configuration tab that displays and edits project and * main type name launch configuration attributes. * <p> * This class may be instantiated. * </p> * @since 3.2 * @noextend This class is not intended to be subclassed by clients. */ public class CeylonMainTab extends SharedJavaMainTab { private Button fStopInMainCheckButton; /* (non-Javadoc) * @see org.eclipse.debug.ui.ILaunchConfigurationTab#createControl(org.eclipse.swt.widgets.Composite) */ public void createControl(Composite parent) { Composite comp = SWTFactory.createComposite(parent, parent.getFont(), 1, 1, GridData.FILL_BOTH); ((GridLayout) comp.getLayout()).verticalSpacing = 0; createProjectEditor(comp); createVerticalSpacer(comp, 1); createMainTypeEditor(comp, LauncherMessages.JavaMainTab_Main_cla_ss__4); setControl(comp); PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(), IJavaDebugHelpContextIds.LAUNCH_CONFIGURATION_DIALOG_MAIN_TAB); } /** * @see org.eclipse.jdt.internal.debug.ui.launcher.SharedJavaMainTab#createMainTypeExtensions(org.eclipse.swt.widgets.Composite) */ protected void createMainTypeExtensions(Composite parent) { fStopInMainCheckButton = SWTFactory.createCheckButton(parent, LauncherMessages.JavaMainTab_St_op_in_main_1, null, false, 1); fStopInMainCheckButton.addSelectionListener(getDefaultListener()); } /* (non-Javadoc) * @see org.eclipse.debug.ui.AbstractLaunchConfigurationTab#getImage() */ public Image getImage() { return JavaUI.getSharedImages().getImage(ISharedImages.IMG_OBJS_CLASS); } /* (non-Javadoc) * @see org.eclipse.debug.ui.ILaunchConfigurationTab#getName() */ public String getName() { return LauncherMessages.JavaMainTab__Main_19; } /** * @see org.eclipse.debug.ui.AbstractLaunchConfigurationTab#getId() * * @since 3.3 */ public String getId() { return PLUGIN_ID + ".ceylonMainTab"; //$NON-NLS-1$ } /** * Show a dialog that lists all main types */ protected void handleSearchButtonSelected() { IJavaProject project = getJavaProject(); IJavaElement[] elements = null; if ((project == null) || !project.exists()) { IJavaModel model = JavaCore.create(ResourcesPlugin.getWorkspace().getRoot()); if (model != null) { try { elements = model.getJavaProjects(); } catch (JavaModelException e) { JDIDebugUIPlugin.log(e); } } } else { elements = new IJavaElement[] { project }; } if (elements == null) { elements = new IJavaElement[] {}; } int constraints = IJavaSearchScope.SOURCES; constraints |= IJavaSearchScope.APPLICATION_LIBRARIES; IJavaSearchScope searchScope = SearchEngine.createJavaSearchScope(elements, constraints); MainMethodSearchEngine engine = new MainMethodSearchEngine(); IType[] types = null; try { types = engine.searchMainMethods(getLaunchConfigurationDialog(), searchScope, false); } catch (InvocationTargetException e) { setErrorMessage(e.getMessage()); return; } catch (InterruptedException e) { setErrorMessage(e.getMessage()); return; } DebugTypeSelectionDialog mmsd = new DebugTypeSelectionDialog(getShell(), types, LauncherMessages.JavaMainTab_Choose_Main_Type_11); if (mmsd.open() == Window.CANCEL) { return; } Object[] results = mmsd.getResult(); IType type = (IType) results[0]; if (type != null) { fMainText.setText(type.getFullyQualifiedName()); fProjText.setText(type.getJavaProject().getElementName()); } } /* (non-Javadoc) * @see org.eclipse.jdt.internal.debug.ui.launcher.AbstractJavaMainTab#initializeFrom(org.eclipse.debug.core.ILaunchConfiguration) */ public void initializeFrom(ILaunchConfiguration config) { super.initializeFrom(config); updateMainTypeFromConfig(config); updateStopInMainFromConfig(config); } /* (non-Javadoc) * @see org.eclipse.debug.ui.AbstractLaunchConfigurationTab#isValid(org.eclipse.debug.core.ILaunchConfiguration) */ public boolean isValid(ILaunchConfiguration config) { setErrorMessage(null); setMessage(null); String name = fProjText.getText().trim(); if (name.length() > 0) { IWorkspace workspace = ResourcesPlugin.getWorkspace(); IStatus status = workspace.validateName(name, IResource.PROJECT); if (status.isOK()) { IProject project = ResourcesPlugin.getWorkspace().getRoot().getProject(name); if (!project.exists()) { setErrorMessage("The project " + name + " does no exist."); return false; } if (!project.isOpen()) { setErrorMessage("The project " + name + " is not opened"); return false; } } else { setErrorMessage("Error : " + status.getMessage()); return false; } } name = fMainText.getText().trim(); if (name.length() == 0) { setErrorMessage("The main method or class is not specified"); return false; } return true; } /* (non-Javadoc) * @see org.eclipse.debug.ui.ILaunchConfigurationTab#performApply(org.eclipse.debug.core.ILaunchConfigurationWorkingCopy) */ public void performApply(ILaunchConfigurationWorkingCopy config) { config.setAttribute(IJavaLaunchConfigurationConstants.ATTR_PROJECT_NAME, fProjText.getText().trim()); config.setAttribute(IJavaLaunchConfigurationConstants.ATTR_MAIN_TYPE_NAME, fMainText.getText().trim()); mapResources(config); // attribute added in 2.1, so null must be used instead of false for backwards compatibility if (fStopInMainCheckButton.getSelection()) { config.setAttribute(IJavaLaunchConfigurationConstants.ATTR_STOP_IN_MAIN, true); } else { config.setAttribute(IJavaLaunchConfigurationConstants.ATTR_STOP_IN_MAIN, (String) null); } } /* (non-Javadoc) * @see org.eclipse.debug.ui.ILaunchConfigurationTab#setDefaults(org.eclipse.debug.core.ILaunchConfigurationWorkingCopy) */ public void setDefaults(ILaunchConfigurationWorkingCopy config) { IJavaElement javaElement = getContext(); if (javaElement != null) { initializeJavaProject(javaElement, config); } else { config.setAttribute(IJavaLaunchConfigurationConstants.ATTR_PROJECT_NAME, EMPTY_STRING); } initializeMainTypeAndName(javaElement, config); } /** * updates the stop in main attribute from the specified launch config * @param config the config to load the stop in main attribute from */ private void updateStopInMainFromConfig(ILaunchConfiguration config) { boolean stop = false; try { stop = config.getAttribute(IJavaLaunchConfigurationConstants.ATTR_STOP_IN_MAIN, false); } catch (CoreException e) { JDIDebugUIPlugin.log(e); } fStopInMainCheckButton.setSelection(stop); } }