Java tutorial
/******************************************************************************* * Copyright (c) 2000, 2011 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 ext.org.eclipse.jdt.internal.ui.preferences; import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.Font; import org.eclipse.swt.graphics.Point; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.jdt.ui.PreferenceConstants; import org.eclipse.jdt.ui.text.IJavaPartitions; import patch.org.eclipse.jdt.ui.text.JavaTextTools; import org.eclipse.jface.preference.IPreferenceStore; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.jface.viewers.IStructuredSelection; import org.eclipse.jface.window.Window; import org.eclipse.jface.text.Document; import org.eclipse.jface.text.IDocument; import org.eclipse.jface.text.source.SourceViewer; import org.eclipse.jface.text.templates.Template; import org.eclipse.jface.text.templates.TemplateContextType; import org.eclipse.jface.text.templates.persistence.TemplatePersistenceData; import org.eclipse.ui.PlatformUI; import org.eclipse.ui.texteditor.templates.TemplatePreferencePage; import patch.org.eclipse.jdt.internal.ui.JavaPlugin; import ext.org.eclipse.jdt.internal.ui.IJavaHelpContextIds; import ext.org.eclipse.jdt.internal.ui.javaeditor.JavaSourceViewer; import ext.org.eclipse.jdt.internal.ui.text.SimpleJavaSourceViewerConfiguration; import ext.org.eclipse.jdt.internal.ui.text.template.preferences.TemplateVariableProcessor; public class JavaTemplatePreferencePage extends TemplatePreferencePage { private TemplateVariableProcessor fTemplateProcessor; public JavaTemplatePreferencePage() { setPreferenceStore(JavaPlugin.getDefault().getPreferenceStore()); setTemplateStore(JavaPlugin.getDefault().getTemplateStore()); setContextTypeRegistry(JavaPlugin.getDefault().getTemplateContextRegistry()); fTemplateProcessor = new TemplateVariableProcessor(); } /* * @see PreferencePage#createControl(Composite) */ @Override public void createControl(Composite parent) { super.createControl(parent); PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(), IJavaHelpContextIds.TEMPLATE_PREFERENCE_PAGE); } /* * @see org.eclipse.ui.texteditor.templates.TemplatePreferencePage#createContents(org.eclipse.swt.widgets.Composite) * @since 3.3 */ @Override protected Control createContents(Composite ancestor) { ScrolledPageContent scrolled = new ScrolledPageContent(ancestor, SWT.H_SCROLL | SWT.V_SCROLL); scrolled.setExpandHorizontal(true); scrolled.setExpandVertical(true); Control control = super.createContents(scrolled); scrolled.setContent(control); final Point size = control.computeSize(SWT.DEFAULT, SWT.DEFAULT); scrolled.setMinSize(size.x, size.y); return scrolled; } /* * @see org.eclipse.jface.preference.IPreferencePage#performOk() */ @Override public boolean performOk() { boolean ok = super.performOk(); JavaPlugin.flushInstanceScope(); return ok; } /* * @see org.eclipse.ui.texteditor.templates.TemplatePreferencePage#getFormatterPreferenceKey() */ @Override protected String getFormatterPreferenceKey() { return PreferenceConstants.TEMPLATES_USE_CODEFORMATTER; } /* * @see org.eclipse.ui.texteditor.templates.TemplatePreferencePage#createTemplateEditDialog2(org.eclipse.jface.text.templates.Template, boolean, boolean) */ @Override protected Template editTemplate(Template template, boolean edit, boolean isNameModifiable) { ext.org.eclipse.jdt.internal.ui.preferences.EditTemplateDialog dialog = new ext.org.eclipse.jdt.internal.ui.preferences.EditTemplateDialog( getShell(), template, edit, isNameModifiable, getContextTypeRegistry()); if (dialog.open() == Window.OK) { return dialog.getTemplate(); } return null; } /* * @see org.eclipse.ui.texteditor.templates.TemplatePreferencePage#createViewer(org.eclipse.swt.widgets.Composite) */ @Override protected SourceViewer createViewer(Composite parent) { IDocument document = new Document(); JavaTextTools tools = JavaPlugin.getDefault().getJavaTextTools(); tools.setupJavaDocumentPartitioner(document, IJavaPartitions.JAVA_PARTITIONING); IPreferenceStore store = JavaPlugin.getDefault().getCombinedPreferenceStore(); SourceViewer viewer = new JavaSourceViewer(parent, null, null, false, SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL, store); SimpleJavaSourceViewerConfiguration configuration = new SimpleJavaSourceViewerConfiguration( tools.getColorManager(), store, null, IJavaPartitions.JAVA_PARTITIONING, false); viewer.configure(configuration); viewer.setEditable(false); viewer.setDocument(document); Font font = JFaceResources.getFont(PreferenceConstants.EDITOR_TEXT_FONT); viewer.getTextWidget().setFont(font); new JavaSourcePreviewerUpdater(viewer, configuration, store); Control control = viewer.getControl(); GridData data = new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.FILL_VERTICAL); control.setLayoutData(data); return viewer; } /* * @see org.eclipse.ui.texteditor.templates.TemplatePreferencePage#updateViewerInput() */ @Override protected void updateViewerInput() { IStructuredSelection selection = (IStructuredSelection) getTableViewer().getSelection(); SourceViewer viewer = getViewer(); if (selection.size() == 1 && selection.getFirstElement() instanceof TemplatePersistenceData) { TemplatePersistenceData data = (TemplatePersistenceData) selection.getFirstElement(); Template template = data.getTemplate(); String contextId = template.getContextTypeId(); TemplateContextType type = JavaPlugin.getDefault().getTemplateContextRegistry() .getContextType(contextId); fTemplateProcessor.setContextType(type); IDocument doc = viewer.getDocument(); String start = null; if ("javadoc".equals(contextId)) { //$NON-NLS-1$ start = "/**" + doc.getLegalLineDelimiters()[0]; //$NON-NLS-1$ } else start = ""; //$NON-NLS-1$ doc.set(start + template.getPattern()); int startLen = start.length(); viewer.setDocument(doc, startLen, doc.getLength() - startLen); } else { viewer.getDocument().set(""); //$NON-NLS-1$ } } }