Java tutorial
/** * This file Copyright (c) 2005-2008 Aptana, Inc. This program is * dual-licensed under both the Aptana Public License and the GNU General * Public license. You may elect to use one or the other of these licenses. * * This program is distributed in the hope that it will be useful, but * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or * NONINFRINGEMENT. Redistribution, except as permitted by whichever of * the GPL or APL you select, is prohibited. * * 1. For the GPL license (GPL), you can redistribute and/or modify this * program under the terms of the GNU General Public License, * Version 3, as published by the Free Software Foundation. You should * have received a copy of the GNU General Public License, Version 3 along * with this program; if not, write to the Free Software Foundation, Inc., 51 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Aptana provides a special exception to allow redistribution of this file * with certain other free and open source software ("FOSS") code and certain additional terms * pursuant to Section 7 of the GPL. You may view the exception and these * terms on the web at http://www.aptana.com/legal/gpl/. * * 2. For the Aptana Public License (APL), this program and the * accompanying materials are made available under the terms of the APL * v1.0 which accompanies this distribution, and is available at * http://www.aptana.com/legal/apl/. * * You may view the GPL, Aptana's exception and additional terms, and the * APL in the file titled license.html at the root of the corresponding * plugin containing this source file. * * Any modifications to this file must keep this entire header intact. */ package com.aptana.ide.debug.internal.ui.preferences; import java.util.ArrayList; import java.util.Collection; import java.util.Iterator; import java.util.List; import java.util.Set; import java.util.TreeSet; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.layout.GridLayoutFactory; import org.eclipse.jface.preference.PreferencePage; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.jface.text.Document; import org.eclipse.jface.text.source.SourceViewer; import org.eclipse.jface.viewers.ArrayContentProvider; import org.eclipse.jface.viewers.CheckStateChangedEvent; import org.eclipse.jface.viewers.CheckboxTableViewer; import org.eclipse.jface.viewers.DoubleClickEvent; import org.eclipse.jface.viewers.ICheckStateListener; import org.eclipse.jface.viewers.IDoubleClickListener; import org.eclipse.jface.viewers.ISelectionChangedListener; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.viewers.LabelProvider; import org.eclipse.jface.viewers.SelectionChangedEvent; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.jface.window.Window; import org.eclipse.swt.SWT; import org.eclipse.swt.events.KeyAdapter; import org.eclipse.swt.events.KeyEvent; import org.eclipse.swt.graphics.Font; 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.Event; import org.eclipse.swt.widgets.Group; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Listener; import org.eclipse.swt.widgets.Table; import org.eclipse.ui.IWorkbench; import org.eclipse.ui.IWorkbenchPreferencePage; import org.eclipse.ui.PlatformUI; import com.aptana.ide.core.StringUtils; import com.aptana.ide.debug.core.DetailFormatter; import com.aptana.ide.debug.core.JSDetailFormattersManager; import com.aptana.ide.debug.internal.ui.IDebugHelpContextIds; import com.aptana.ide.debug.internal.ui.IDebugUIConstants; import com.aptana.ide.debug.internal.ui.dialogs.DetailFormatterDialog; import com.aptana.ide.debug.ui.DebugUiPlugin; /** * @author Max Stepanov */ public class JSDetailFormattersPreferencePage extends PreferencePage implements IWorkbenchPreferencePage { private Label listLabel; private Button addFormatterButton; private Button removeFormatterButton; private Button editFormatterButton; private Button inlineButton; private Button inlineAllButton; private CheckboxTableViewer listViewer; private SourceViewer sourceViewer; private List<String> types; private Set<DetailFormatter> formatters; /** * JSDetailFormattersPreferencePage */ public JSDetailFormattersPreferencePage() { super(); setTitle(Messages.JSDetailFormattersPreferencePage_DetailFormatters); setPreferenceStore(DebugUiPlugin.getDefault().getPreferenceStore()); setDescription(Messages.JSDetailFormattersPreferencePage_OverrideDefault); } protected Control createContents(Composite parent) { initializeDialogUnits(parent); Composite composite = new Composite(parent, SWT.NONE); composite.setLayout(GridLayoutFactory.swtDefaults().numColumns(2).margins(0, 0).create()); GridDataFactory.fillDefaults().applyTo(composite); composite.setFont(parent.getFont()); createFormattersList(composite); createOptions(composite); Dialog.applyDialogFont(composite); noDefaultAndApplyButton(); PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(), IDebugHelpContextIds.JS_DETAIL_FORMATTER_PREFERENCE_PAGE); return composite; } public void init(IWorkbench workbench) { } private void createOptions(Composite parent) { Group group = new Group(parent, SWT.NONE); group.setText(Messages.JSDetailFormattersPreferencePage_ShowVariableDetails); GridDataFactory.fillDefaults().span(2, 1).applyTo(group); group.setLayout(new GridLayout()); String preference = getPreferenceStore().getString(IDebugUIConstants.PREF_SHOW_DETAILS); inlineButton = new Button(group, SWT.RADIO); inlineButton.setText(Messages.JSDetailFormattersPreferencePage_AsLabelForVariablesWithDetailFormatters); inlineButton.setSelection(preference.equals(IDebugUIConstants.INLINE_FORMATTERS)); inlineAllButton = new Button(group, SWT.RADIO); inlineAllButton.setText(Messages.JSDetailFormattersPreferencePage_AsLabelForAllVariables); inlineAllButton.setSelection(preference.equals(IDebugUIConstants.INLINE_ALL)); Button detailPane = new Button(group, SWT.RADIO); detailPane.setText(Messages.JSDetailFormattersPreferencePage_InDetailPaneOnly); detailPane.setSelection(preference.equals(IDebugUIConstants.DETAIL_PANE) || preference.length() == 0); } private Control createFormattersList(Composite parent) { Font font = parent.getFont(); listLabel = new Label(parent, SWT.NONE); listLabel.setText(Messages.JSDetailFormattersPreferencePage_TypesWithDetailFormatters); GridDataFactory.swtDefaults().span(2, 1).applyTo(listLabel); listLabel.setFont(font); listViewer = CheckboxTableViewer.newCheckList(parent, SWT.CHECK | SWT.FULL_SELECTION | SWT.MULTI | SWT.BORDER); Table table = (Table) listViewer.getControl(); GridDataFactory.fillDefaults().grab(true, true).hint(convertWidthInCharsToPixels(10), SWT.DEFAULT) .applyTo(table); table.setFont(font); listViewer.setContentProvider(new ArrayContentProvider()); listViewer.setLabelProvider(new LabelProvider() { public String getText(Object element) { if (element instanceof DetailFormatter) { return ((DetailFormatter) element).getTypeName(); } return null; } }); // button container Composite composite = new Composite(parent, SWT.NONE); GridDataFactory.fillDefaults().grab(false, true).applyTo(composite); composite.setLayout(GridLayoutFactory.fillDefaults().create()); // Add button addFormatterButton = new Button(composite, SWT.PUSH); addFormatterButton.setText(StringUtils.ellipsify(Messages.JSDetailFormattersPreferencePage_Add)); addFormatterButton .setToolTipText(Messages.JSDetailFormattersPreferencePage_AllowToCreateNewDetailFormatter); setButtonLayoutData(addFormatterButton); addFormatterButton.setFont(font); // Edit button editFormatterButton = new Button(composite, SWT.PUSH); editFormatterButton.setText(StringUtils.ellipsify(Messages.JSDetailFormattersPreferencePage_Edit)); editFormatterButton.setToolTipText(Messages.JSDetailFormattersPreferencePage_EditSelectedDetailFormatter); setButtonLayoutData(editFormatterButton); editFormatterButton.setFont(font); // Remove button removeFormatterButton = new Button(composite, SWT.PUSH); removeFormatterButton.setText(Messages.JSDetailFormattersPreferencePage_Remove); removeFormatterButton .setToolTipText(Messages.JSDetailFormattersPreferencePage_RemoveAllSelectedDetailFormatters); setButtonLayoutData(removeFormatterButton); removeFormatterButton.setFont(font); Label label = new Label(parent, SWT.NONE); label.setText(Messages.JSDetailFormattersPreferencePage_DetailFormatterCodeSnippetDefinedForSelectedType); GridDataFactory.fillDefaults().grab(true, false).span(2, 1).applyTo(label); label.setFont(font); sourceViewer = new SourceViewer(parent, null, SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL); sourceViewer.getTextWidget() .setBackground(getShell().getDisplay().getSystemColor(SWT.COLOR_WIDGET_BACKGROUND)); sourceViewer.getTextWidget().setFont(JFaceResources.getTextFont()); GridDataFactory.fillDefaults().grab(true, true).span(2, 1).applyTo(sourceViewer.getControl()); // listeners listViewer.addSelectionChangedListener(new ISelectionChangedListener() { public void selectionChanged(SelectionChangedEvent event) { updatePage((IStructuredSelection) event.getSelection()); } }); listViewer.addDoubleClickListener(new IDoubleClickListener() { public void doubleClick(DoubleClickEvent event) { if (!event.getSelection().isEmpty()) { editType(); } } }); listViewer.addCheckStateListener(new ICheckStateListener() { public void checkStateChanged(CheckStateChangedEvent event) { ((DetailFormatter) event.getElement()).setEnabled(event.getChecked()); } }); table.addKeyListener(new KeyAdapter() { public void keyPressed(KeyEvent event) { if (event.character == SWT.DEL && event.stateMask == 0) { removeTypes(); } } }); addFormatterButton.addListener(SWT.Selection, new Listener() { public void handleEvent(Event e) { addType(); } }); editFormatterButton.addListener(SWT.Selection, new Listener() { public void handleEvent(Event e) { editType(); } }); removeFormatterButton.addListener(SWT.Selection, new Listener() { public void handleEvent(Event e) { removeTypes(); } }); editFormatterButton.setEnabled(false); removeFormatterButton.setEnabled(false); sourceViewer.setEditable(false); sourceViewer.setDocument(new Document()); loadDetailFormatters(); listViewer.setInput(formatters); updateViewerCheckboxes(); return parent; } private void updatePage(IStructuredSelection selection) { removeFormatterButton.setEnabled(!selection.isEmpty()); editFormatterButton.setEnabled(selection.size() == 1); sourceViewer.getDocument() .set(selection.size() == 1 ? ((DetailFormatter) selection.getFirstElement()).getSnippet() : StringUtils.EMPTY); } private void addType() { DetailFormatter detailFormatfer = new DetailFormatter(StringUtils.EMPTY, StringUtils.EMPTY, true); DetailFormatterDialog dlg = new DetailFormatterDialog(getShell(), detailFormatfer, types, false); if (dlg.open() == Window.OK) { addDetailFormatter(detailFormatfer); } } private void removeTypes() { Object[] list = formatters.toArray(); IStructuredSelection selection = (IStructuredSelection) listViewer.getSelection(); Object first = selection.getFirstElement(); int index = -1; for (int i = 0; i < list.length; i++) { if (list[i].equals(first)) { index = i; break; } } removeDetailFormatters(selection.toArray()); list = formatters.toArray(); if (index > list.length - 1) { index = list.length - 1; } if (index >= 0) { listViewer.setSelection(new StructuredSelection(list[index])); } } private void editType() { IStructuredSelection selection = (IStructuredSelection) listViewer.getSelection(); DetailFormatterDialog dlg = new DetailFormatterDialog(getShell(), (DetailFormatter) (selection).getFirstElement(), null, true, true); if (dlg.open() == Window.OK) { listViewer.refresh(); updateViewerCheckboxes(); updatePage(selection); } } public boolean performOk() { JSDetailFormattersManager.getDefault().setDetailFormatters(formatters); String value = IDebugUIConstants.DETAIL_PANE; if (inlineAllButton.getSelection()) { value = IDebugUIConstants.INLINE_ALL; } else if (inlineButton.getSelection()) { value = IDebugUIConstants.INLINE_FORMATTERS; } getPreferenceStore().setValue(IDebugUIConstants.PREF_SHOW_DETAILS, value); DebugUiPlugin.getDefault().savePluginPreferences(); return true; } private void updateViewerCheckboxes() { DetailFormatter[] checkedElementsTmp = new DetailFormatter[formatters.size()]; int i = 0; for (Iterator iter = formatters.iterator(); iter.hasNext();) { DetailFormatter detailFormatter = (DetailFormatter) iter.next(); if (detailFormatter.isEnabled()) { checkedElementsTmp[i++] = detailFormatter; } } DetailFormatter[] checkedElements = new DetailFormatter[i]; System.arraycopy(checkedElementsTmp, 0, checkedElements, 0, i); listViewer.setAllChecked(false); listViewer.setCheckedElements(checkedElements); } private void addDetailFormatter(DetailFormatter detailFormatter) { formatters.add(detailFormatter); types.add(detailFormatter.getTypeName()); listViewer.refresh(); updateViewerCheckboxes(); IStructuredSelection selection = new StructuredSelection(detailFormatter); listViewer.setSelection(selection); updatePage(selection); } private void removeDetailFormatters(Object[] detailFormatters) { for (int i = 0; i < detailFormatters.length; ++i) { formatters.remove(detailFormatters[i]); types.remove(((DetailFormatter) detailFormatters[i]).getTypeName()); } listViewer.refresh(); listViewer.setSelection(StructuredSelection.EMPTY); updatePage(StructuredSelection.EMPTY); } private void loadDetailFormatters() { formatters = new TreeSet<DetailFormatter>(); Collection detailFormatters = JSDetailFormattersManager.getDefault().getDetailFormatters(); types = new ArrayList<String>(detailFormatters.size()); for (Iterator i = detailFormatters.iterator(); i.hasNext();) { DetailFormatter detailFormatter = (DetailFormatter) i.next(); formatters.add(detailFormatter); types.add(detailFormatter.getTypeName()); } } }