Java tutorial
/******************************************************************************* * Copyright (c) 2002, 2013 GEBIT Gesellschaft fuer EDV-Beratung * und Informatik-Technologien mbH, * Berlin, Duesseldorf, Frankfurt (Germany) 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: * GEBIT Gesellschaft fuer EDV-Beratung und Informatik-Technologien mbH - initial API and implementation * IBM Corporation - bug fixes * John-Mason P. Shackelford - bug 40255 * Rob Dingwell - bug 68886 *******************************************************************************/ package org.eclipse.ant.internal.ui.editor; import java.util.ArrayList; import java.util.List; import java.util.Map; import org.eclipse.ant.internal.core.IAntCoreConstants; import org.eclipse.ant.internal.ui.AntSourceViewerConfiguration; import org.eclipse.ant.internal.ui.editor.formatter.XmlDocumentFormattingStrategy; import org.eclipse.ant.internal.ui.editor.formatter.XmlElementFormattingStrategy; import org.eclipse.ant.internal.ui.editor.text.AntDocumentSetupParticipant; import org.eclipse.ant.internal.ui.editor.text.AntEditorPartitionScanner; import org.eclipse.ant.internal.ui.editor.text.AntInformationProvider; import org.eclipse.ant.internal.ui.editor.text.NotifyingReconciler; import org.eclipse.ant.internal.ui.editor.text.XMLAnnotationHover; import org.eclipse.ant.internal.ui.editor.text.XMLReconcilingStrategy; import org.eclipse.ant.internal.ui.editor.text.XMLTextHover; import org.eclipse.ant.internal.ui.preferences.AntEditorPreferenceConstants; import org.eclipse.core.runtime.IAdaptable; import org.eclipse.jface.preference.JFacePreferences; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.jface.text.DefaultInformationControl; import org.eclipse.jface.text.IAutoEditStrategy; import org.eclipse.jface.text.IDocument; import org.eclipse.jface.text.IInformationControl; import org.eclipse.jface.text.IInformationControlCreator; import org.eclipse.jface.text.ITextHover; import org.eclipse.jface.text.contentassist.ContentAssistant; import org.eclipse.jface.text.contentassist.IContentAssistant; import org.eclipse.jface.text.formatter.IContentFormatter; import org.eclipse.jface.text.formatter.MultiPassContentFormatter; import org.eclipse.jface.text.information.IInformationPresenter; import org.eclipse.jface.text.information.IInformationProvider; import org.eclipse.jface.text.information.InformationPresenter; import org.eclipse.jface.text.reconciler.IReconciler; import org.eclipse.jface.text.source.IAnnotationHover; import org.eclipse.jface.text.source.ISourceViewer; import org.eclipse.jface.util.PropertyChangeEvent; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.widgets.Shell; /** * The source viewer configuration for the Ant Editor. */ public class AntEditorSourceViewerConfiguration extends AntSourceViewerConfiguration { private AntEditor fEditor; private XMLTextHover fTextHover; private ContentAssistant fContentAssistant; private AntAutoEditStrategy[] fAutoEditorStategies; /** * Creates an instance with the specified color manager. */ public AntEditorSourceViewerConfiguration(AntEditor editor) { super(); fEditor = editor; } /* * (non-Javadoc) * * @see org.eclipse.jface.text.source.SourceViewerConfiguration#getContentAssistant(ISourceViewer) */ @Override public IContentAssistant getContentAssistant(ISourceViewer sourceViewer) { fContentAssistant = new ContentAssistant(); AntEditorCompletionProcessor processor = new AntEditorCompletionProcessor(fEditor.getAntModel()); fContentAssistant.setContentAssistProcessor(processor, IDocument.DEFAULT_CONTENT_TYPE); fContentAssistant.setContentAssistProcessor(processor, AntEditorPartitionScanner.XML_TAG); fContentAssistant.setDocumentPartitioning(AntDocumentSetupParticipant.ANT_PARTITIONING); String triggers = fPreferenceStore .getString(AntEditorPreferenceConstants.CODEASSIST_AUTOACTIVATION_TRIGGERS); if (triggers != null) { processor.setCompletionProposalAutoActivationCharacters(triggers.toCharArray()); } fContentAssistant .enableAutoInsert(fPreferenceStore.getBoolean(AntEditorPreferenceConstants.CODEASSIST_AUTOINSERT)); fContentAssistant.enableAutoActivation( fPreferenceStore.getBoolean(AntEditorPreferenceConstants.CODEASSIST_AUTOACTIVATION)); fContentAssistant.setAutoActivationDelay( fPreferenceStore.getInt(AntEditorPreferenceConstants.CODEASSIST_AUTOACTIVATION_DELAY)); fContentAssistant.setProposalPopupOrientation(IContentAssistant.PROPOSAL_OVERLAY); fContentAssistant.setContextInformationPopupOrientation(IContentAssistant.CONTEXT_INFO_ABOVE); fContentAssistant.setInformationControlCreator(getInformationControlCreator(sourceViewer)); Color background = JFaceResources.getColorRegistry().get(JFacePreferences.CONTENT_ASSIST_BACKGROUND_COLOR); fContentAssistant.setContextInformationPopupBackground(background); fContentAssistant.setContextSelectorBackground(background); Color foreground = JFaceResources.getColorRegistry().get(JFacePreferences.CONTENT_ASSIST_FOREGROUND_COLOR); fContentAssistant.setContextInformationPopupForeground(foreground); fContentAssistant.setContextSelectorForeground(foreground); IInformationControlCreator creator = getInformationControlCreator(sourceViewer); fContentAssistant.setInformationControlCreator(creator); fContentAssistant.setRepeatedInvocationMode(true); fContentAssistant.setStatusLineVisible(true); fContentAssistant.setShowEmptyList(true); fContentAssistant.addCompletionListener(processor); return fContentAssistant; } /* * (non-Javadoc) * * @see org.eclipse.jface.text.source.SourceViewerConfiguration#getReconciler(org.eclipse.jface.text.source.ISourceViewer) */ @Override public IReconciler getReconciler(ISourceViewer sourceViewer) { NotifyingReconciler reconciler = new NotifyingReconciler(new XMLReconcilingStrategy(fEditor)); reconciler.setDelay(XMLReconcilingStrategy.DELAY); reconciler.addReconcilingParticipant(fEditor); return reconciler; } /* * @see org.eclipse.jface.text.source.SourceViewerConfiguration#getAnnotationHover(org.eclipse.jface.text.source.ISourceViewer) */ @Override public IAnnotationHover getAnnotationHover(ISourceViewer sourceViewer) { return new XMLAnnotationHover(); } /* * @see org.eclipse.jface.text.source.SourceViewerConfiguration#getInformationControlCreator(org.eclipse.jface.text.source.ISourceViewer) */ @Override public IInformationControlCreator getInformationControlCreator(ISourceViewer sourceViewer) { return new IInformationControlCreator() { @Override public IInformationControl createInformationControl(Shell parent) { return new DefaultInformationControl(parent, false); } }; } /* * @see org.eclipse.jface.text.source.SourceViewerConfiguration#getTextHover(org.eclipse.jface.text.source.ISourceViewer, java.lang.String) */ @Override public ITextHover getTextHover(ISourceViewer sourceViewer, String contentType) { if (fTextHover == null) { fTextHover = new XMLTextHover(fEditor); } return fTextHover; } protected void changeConfiguration(PropertyChangeEvent event) { String p = event.getProperty(); if (AntEditorPreferenceConstants.CODEASSIST_AUTOACTIVATION.equals(p)) { boolean enabled = fPreferenceStore.getBoolean(AntEditorPreferenceConstants.CODEASSIST_AUTOACTIVATION); fContentAssistant.enableAutoActivation(enabled); } else if (AntEditorPreferenceConstants.CODEASSIST_AUTOACTIVATION_DELAY.equals(p) && fContentAssistant != null) { int delay = fPreferenceStore.getInt(AntEditorPreferenceConstants.CODEASSIST_AUTOACTIVATION_DELAY); fContentAssistant.setAutoActivationDelay(delay); } else if (AntEditorPreferenceConstants.CODEASSIST_AUTOINSERT.equals(p) && fContentAssistant != null) { boolean enabled = fPreferenceStore.getBoolean(AntEditorPreferenceConstants.CODEASSIST_AUTOINSERT); fContentAssistant.enableAutoInsert(enabled); } else if (AntEditorPreferenceConstants.CODEASSIST_AUTOACTIVATION_TRIGGERS.equals(p)) { changeContentAssistProcessor(); } } private void changeContentAssistProcessor() { String triggers = fPreferenceStore .getString(AntEditorPreferenceConstants.CODEASSIST_AUTOACTIVATION_TRIGGERS); if (triggers != null) { AntEditorCompletionProcessor cp = (AntEditorCompletionProcessor) fContentAssistant .getContentAssistProcessor(IDocument.DEFAULT_CONTENT_TYPE); if (cp != null) { cp.setCompletionProposalAutoActivationCharacters(triggers.toCharArray()); } } } /* * (non-Javadoc) * * @see org.eclipse.jface.text.source.SourceViewerConfiguration#getContentFormatter(org.eclipse.jface.text.source.ISourceViewer) */ @Override public IContentFormatter getContentFormatter(ISourceViewer sourceViewer) { MultiPassContentFormatter formatter = new MultiPassContentFormatter( getConfiguredDocumentPartitioning(sourceViewer), IDocument.DEFAULT_CONTENT_TYPE); formatter.setMasterStrategy(new XmlDocumentFormattingStrategy()); formatter.setSlaveStrategy(new XmlElementFormattingStrategy(), AntEditorPartitionScanner.XML_TAG); // formatter.setSlaveStrategy(new XmlCommentFormattingStrategy(), AntEditorPartitionScanner.XML_COMMENT); return formatter; } /* * (non-Javadoc) * * @see org.eclipse.jface.text.source.SourceViewerConfiguration#getInformationPresenter(org.eclipse.jface.text.source.ISourceViewer) */ @Override public IInformationPresenter getInformationPresenter(ISourceViewer sourceViewer) { InformationPresenter presenter = new InformationPresenter(getInformationPresenterControlCreator()); presenter.setDocumentPartitioning(getConfiguredDocumentPartitioning(sourceViewer)); IInformationProvider provider = new AntInformationProvider(new XMLTextHover(fEditor)); presenter.setInformationProvider(provider, IDocument.DEFAULT_CONTENT_TYPE); presenter.setInformationProvider(provider, AntEditorPartitionScanner.XML_CDATA); presenter.setInformationProvider(provider, AntEditorPartitionScanner.XML_COMMENT); presenter.setInformationProvider(provider, AntEditorPartitionScanner.XML_DTD); presenter.setInformationProvider(provider, AntEditorPartitionScanner.XML_TAG); presenter.setSizeConstraints(60, 10, true, true); return presenter; } /** * Returns the information presenter control creator. The creator is a factory creating the presenter controls for the given source viewer. This * implementation always returns a creator for <code>DefaultInformationControl</code> instances. * * @return an information control creator * @since 3.1 */ public static IInformationControlCreator getInformationPresenterControlCreator() { return new IInformationControlCreator() { @Override public IInformationControl createInformationControl(Shell parent) { return new DefaultInformationControl(parent, true); } }; } /* * (non-Javadoc) * * @see org.eclipse.jface.text.source.SourceViewerConfiguration#getIndentPrefixes(org.eclipse.jface.text.source.ISourceViewer, java.lang.String) */ @Override public String[] getIndentPrefixes(ISourceViewer sourceViewer, String contentType) { List<String> list = new ArrayList<>(); // prefix[0] is either '\t' or ' ' x tabWidth, depending on useSpaces int tabWidth = getTabWidth(sourceViewer); boolean useSpaces = fEditor.isTabsToSpacesConversionEnabled(); for (int i = 0; i <= tabWidth; i++) { StringBuffer prefix = new StringBuffer(); if (useSpaces) { for (int j = 0; j + i < tabWidth; j++) { prefix.append(' '); } if (i != 0) { prefix.append('\t'); } } else { for (int j = 0; j < i; j++) { prefix.append(' '); } if (i != tabWidth) { prefix.append('\t'); } } list.add(prefix.toString()); } list.add(IAntCoreConstants.EMPTY_STRING); return list.toArray(new String[list.size()]); } /* * @see org.eclipse.jface.text.source.SourceViewerConfiguration#getAutoEditStrategies(org.eclipse.jface.text.source.ISourceViewer, * java.lang.String) */ @Override public IAutoEditStrategy[] getAutoEditStrategies(ISourceViewer sourceViewer, String contentType) { if (AntEditorPartitionScanner.XML_COMMENT.equals(contentType)) { return super.getAutoEditStrategies(sourceViewer, contentType); } if (fAutoEditorStategies == null) { fAutoEditorStategies = new AntAutoEditStrategy[] { new AntAutoEditStrategy(fEditor.getAntModel()) }; } return fAutoEditorStategies; } /* * @see org.eclipse.ui.editors.text.TextSourceViewerConfiguration#getHyperlinkDetectorTargets(org.eclipse.jface.text.source.ISourceViewer) */ @Override protected Map<String, IAdaptable> getHyperlinkDetectorTargets(ISourceViewer sourceViewer) { Map<String, IAdaptable> targets = super.getHyperlinkDetectorTargets(sourceViewer); targets.put("org.eclipse.ant.ui.buildFiles", fEditor); //$NON-NLS-1$ return targets; } }