Java tutorial
/******************************************************************************* * Copyright (c) 2000, 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 org.eclipse.jdt.internal.debug.ui.launcher; import java.util.ArrayList; import java.util.List; import org.eclipse.core.runtime.CoreException; import org.eclipse.debug.core.ILaunchConfiguration; import org.eclipse.debug.core.ILaunchConfigurationWorkingCopy; import org.eclipse.debug.ui.ILaunchConfigurationTab; import org.eclipse.jdt.debug.ui.JavaUISourceLocator; import org.eclipse.jdt.internal.debug.ui.JDIDebugUIPlugin; import org.eclipse.jdt.internal.debug.ui.actions.AddAdvancedAction; import org.eclipse.jdt.internal.debug.ui.actions.AddExternalFolderAction; import org.eclipse.jdt.internal.debug.ui.actions.AddExternalJarAction; import org.eclipse.jdt.internal.debug.ui.actions.AddFolderAction; import org.eclipse.jdt.internal.debug.ui.actions.AddJarAction; import org.eclipse.jdt.internal.debug.ui.actions.AddLibraryAction; import org.eclipse.jdt.internal.debug.ui.actions.AddProjectAction; import org.eclipse.jdt.internal.debug.ui.actions.AddVariableAction; import org.eclipse.jdt.internal.debug.ui.actions.AttachSourceAction; import org.eclipse.jdt.internal.debug.ui.actions.MoveDownAction; import org.eclipse.jdt.internal.debug.ui.actions.MoveUpAction; import org.eclipse.jdt.internal.debug.ui.actions.RemoveAction; import org.eclipse.jdt.internal.debug.ui.actions.RuntimeClasspathAction; import org.eclipse.jdt.launching.IJavaLaunchConfigurationConstants; import org.eclipse.jdt.launching.IRuntimeClasspathEntry; import org.eclipse.jdt.launching.JavaRuntime; import org.eclipse.jface.action.IAction; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.graphics.Font; import org.eclipse.swt.graphics.FontMetrics; import org.eclipse.swt.graphics.GC; 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.Label; /** * Control used to edit the source lookup path for a Java launch configuration. */ public class SourceLookupBlock extends AbstractJavaClasspathTab implements ILaunchConfigurationTab { protected ILaunchConfiguration fConfig; protected RuntimeClasspathViewer fPathViewer; protected Button fDefaultButton; protected Button fDuplicatesButton; protected static final String DIALOG_SETTINGS_PREFIX = "SourceLookupBlock"; //$NON-NLS-1$ /** * Creates and returns the source lookup control. * * @param parent the parent widget of this control */ public void createControl(Composite parent) { Font font = parent.getFont(); Composite comp = new Composite(parent, SWT.NONE); GridLayout topLayout = new GridLayout(); topLayout.numColumns = 2; comp.setLayout(topLayout); GridData gd = new GridData(GridData.FILL_BOTH); comp.setLayoutData(gd); Label viewerLabel = new Label(comp, SWT.LEFT); viewerLabel.setText(LauncherMessages.SourceLookupBlock__Source_Lookup_Path__1); gd = new GridData(GridData.HORIZONTAL_ALIGN_FILL); gd.horizontalSpan = 2; viewerLabel.setLayoutData(gd); viewerLabel.setFont(font); fPathViewer = new RuntimeClasspathViewer(comp); fPathViewer.addEntriesChangedListener(this); gd = new GridData(GridData.FILL_BOTH); fPathViewer.getControl().setLayoutData(gd); fPathViewer.getControl().setFont(font); Composite pathButtonComp = new Composite(comp, SWT.NONE); GridLayout pathButtonLayout = new GridLayout(); pathButtonLayout.marginHeight = 0; pathButtonLayout.marginWidth = 0; pathButtonComp.setLayout(pathButtonLayout); gd = new GridData(GridData.VERTICAL_ALIGN_BEGINNING | GridData.HORIZONTAL_ALIGN_FILL); pathButtonComp.setLayoutData(gd); pathButtonComp.setFont(font); createVerticalSpacer(comp, 2); fDefaultButton = new Button(comp, SWT.CHECK); fDefaultButton.setText(LauncherMessages.SourceLookupBlock_Use_defau_lt_source_lookup_path_1); gd = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING); gd.horizontalSpan = 2; fDefaultButton.setLayoutData(gd); fDefaultButton.setFont(font); fDefaultButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent evt) { handleDefaultButtonSelected(); } }); fDuplicatesButton = new Button(comp, SWT.CHECK); fDuplicatesButton.setText(LauncherMessages.SourceLookupBlock__Search_for_duplicate_source_files_on_path_1); gd = new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING); gd.horizontalSpan = 2; fDuplicatesButton.setLayoutData(gd); fDuplicatesButton.setFont(font); fDuplicatesButton.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent evt) { setDirty(true); updateLaunchConfigurationDialog(); } }); List<RuntimeClasspathAction> advancedActions = new ArrayList<RuntimeClasspathAction>(5); GC gc = new GC(parent); gc.setFont(parent.getFont()); FontMetrics fontMetrics = gc.getFontMetrics(); gc.dispose(); RuntimeClasspathAction action = new MoveUpAction(fPathViewer); Button button = createPushButton(pathButtonComp, action.getText(), fontMetrics); action.setButton(button); action = new MoveDownAction(fPathViewer); button = createPushButton(pathButtonComp, action.getText(), fontMetrics); action.setButton(button); action = new RemoveAction(fPathViewer); button = createPushButton(pathButtonComp, action.getText(), fontMetrics); action.setButton(button); action = new AddProjectAction(fPathViewer); button = createPushButton(pathButtonComp, action.getText(), fontMetrics); action.setButton(button); action = new AddJarAction(fPathViewer); button = createPushButton(pathButtonComp, action.getText(), fontMetrics); action.setButton(button); action = new AddExternalJarAction(fPathViewer, DIALOG_SETTINGS_PREFIX); button = createPushButton(pathButtonComp, action.getText(), fontMetrics); action.setButton(button); action = new AddFolderAction(fPathViewer); advancedActions.add(action); action = new AddExternalFolderAction(fPathViewer, DIALOG_SETTINGS_PREFIX); advancedActions.add(action); action = new AddVariableAction(fPathViewer); advancedActions.add(action); action = new AddLibraryAction(null); advancedActions.add(action); action = new AttachSourceAction(fPathViewer, SWT.RADIO); advancedActions.add(action); IAction[] adv = advancedActions.toArray(new IAction[advancedActions.size()]); action = new AddAdvancedAction(fPathViewer, adv); button = createPushButton(pathButtonComp, action.getText(), fontMetrics); action.setButton(button); setControl(comp); } /** * The "default" button has been toggled */ protected void handleDefaultButtonSelected() { setDirty(true); boolean def = fDefaultButton.getSelection(); if (def) { try { ILaunchConfiguration config = getLaunchConfiguration(); ILaunchConfigurationWorkingCopy wc = null; if (config.isWorkingCopy()) { wc = (ILaunchConfigurationWorkingCopy) config; } else { wc = config.getWorkingCopy(); } performApply(wc); IRuntimeClasspathEntry[] defs = JavaRuntime.computeUnresolvedSourceLookupPath(wc); fPathViewer.setEntries(defs); } catch (CoreException e) { JDIDebugUIPlugin.log(e); } } fPathViewer.setEnabled(!def); updateLaunchConfigurationDialog(); } /** * Creates and returns a button * * @param parent parent widget * @param label label * @return Button */ protected Button createPushButton(Composite parent, String label, FontMetrics fontMetrics) { Button button = new Button(parent, SWT.PUSH); button.setFont(parent.getFont()); button.setText(label); GridData gd = getButtonGridData(button, fontMetrics); button.setLayoutData(gd); return button; } private GridData getButtonGridData(Button button, FontMetrics fontMetrics) { GridData gd = new GridData(GridData.FILL_HORIZONTAL | GridData.VERTICAL_ALIGN_BEGINNING); int widthHint = Dialog.convertHorizontalDLUsToPixels(fontMetrics, IDialogConstants.BUTTON_WIDTH); gd.widthHint = Math.max(widthHint, button.computeSize(SWT.DEFAULT, SWT.DEFAULT, true).x); return gd; } /* (non-Javadoc) * @see org.eclipse.debug.ui.ILaunchConfigurationTab#initializeFrom(org.eclipse.debug.core.ILaunchConfiguration) */ @Override public void initializeFrom(ILaunchConfiguration config) { boolean useDefault = true; setErrorMessage(null); try { useDefault = config.getAttribute(IJavaLaunchConfigurationConstants.ATTR_DEFAULT_SOURCE_PATH, true); } catch (CoreException e) { JDIDebugUIPlugin.log(e); } if (config == getLaunchConfiguration()) { // same as previously viewed launch config if (!useDefault && !fDefaultButton.getSelection()) { // If an explicit classpath is being used, it must be the same as before. // No need to refresh setDirty(false); return; } } setLaunchConfiguration(config); fDefaultButton.setSelection(useDefault); try { IRuntimeClasspathEntry[] entries = JavaRuntime.computeUnresolvedSourceLookupPath(config); fPathViewer.setEntries(entries); } catch (CoreException e) { setErrorMessage(e.getMessage()); } fPathViewer.setEnabled(!useDefault); fPathViewer.setLaunchConfiguration(config); try { fDuplicatesButton .setSelection(config.getAttribute(JavaUISourceLocator.ATTR_FIND_ALL_SOURCE_ELEMENTS, false)); } catch (CoreException e) { JDIDebugUIPlugin.log(e); } setDirty(false); } /* (non-Javadoc) * @see org.eclipse.debug.ui.ILaunchConfigurationTab#performApply(org.eclipse.debug.core.ILaunchConfigurationWorkingCopy) */ public void performApply(ILaunchConfigurationWorkingCopy configuration) { if (isDirty()) { boolean def = fDefaultButton.getSelection(); if (def) { configuration.setAttribute(IJavaLaunchConfigurationConstants.ATTR_DEFAULT_SOURCE_PATH, (String) null); configuration.setAttribute(IJavaLaunchConfigurationConstants.ATTR_SOURCE_PATH, (List<String>) null); } else { configuration.setAttribute(IJavaLaunchConfigurationConstants.ATTR_DEFAULT_SOURCE_PATH, def); try { IRuntimeClasspathEntry[] entries = fPathViewer.getEntries(); List<String> mementos = new ArrayList<String>(entries.length); for (int i = 0; i < entries.length; i++) { mementos.add(entries[i].getMemento()); } configuration.setAttribute(IJavaLaunchConfigurationConstants.ATTR_SOURCE_PATH, mementos); } catch (CoreException e) { JDIDebugUIPlugin.statusDialog( LauncherMessages.SourceLookupBlock_Unable_to_save_source_lookup_path_1, e.getStatus()); } } boolean dup = fDuplicatesButton.getSelection(); if (dup) { configuration.setAttribute(JavaUISourceLocator.ATTR_FIND_ALL_SOURCE_ELEMENTS, true); } else { configuration.setAttribute(JavaUISourceLocator.ATTR_FIND_ALL_SOURCE_ELEMENTS, (String) null); } } } /** * Returns the entries visible in the viewer */ public IRuntimeClasspathEntry[] getEntries() { return fPathViewer.getEntries(); } /** * Sets the configuration associated with this source lookup * block. * * @param configuration launch configuration */ private void setLaunchConfiguration(ILaunchConfiguration configuration) { fConfig = configuration; } /** * Sets the configuration associated with this source lookup * block. * * @param configuration launch configuration */ protected ILaunchConfiguration getLaunchConfiguration() { return fConfig; } /* (non-Javadoc) * @see org.eclipse.debug.ui.ILaunchConfigurationTab#getName() */ public String getName() { return LauncherMessages.SourceLookupBlock_Source_1; } /* (non-Javadoc) * @see org.eclipse.debug.ui.ILaunchConfigurationTab#setDefaults(org.eclipse.debug.core.ILaunchConfigurationWorkingCopy) */ public void setDefaults(ILaunchConfigurationWorkingCopy configuration) { configuration.setAttribute(IJavaLaunchConfigurationConstants.ATTR_DEFAULT_SOURCE_PATH, (String) null); configuration.setAttribute(IJavaLaunchConfigurationConstants.ATTR_SOURCE_PATH, (List<String>) null); configuration.setAttribute(JavaUISourceLocator.ATTR_FIND_ALL_SOURCE_ELEMENTS, (String) null); } /* (non-Javadoc) * @see org.eclipse.debug.ui.AbstractLaunchConfigurationTab#updateLaunchConfigurationDialog() */ @Override protected void updateLaunchConfigurationDialog() { if (getLaunchConfigurationDialog() != null) { super.updateLaunchConfigurationDialog(); } } /* (non-Javadoc) * @see org.eclipse.debug.ui.ILaunchConfigurationTab#dispose() */ @Override public void dispose() { fPathViewer.removeEntriesChangedListener(this); super.dispose(); } }