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/*******************************************************************************
* Copyright (c) 2004, 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 org.eclipse.wst.css.ui;
import java.util.ArrayList;
import java.util.List;
import java.util.Vector;
import org.eclipse.core.runtime.Preferences;
import org.eclipse.jface.text.IAutoEditStrategy;
import org.eclipse.jface.text.contentassist.IContentAssistProcessor;
import org.eclipse.jface.text.formatter.IContentFormatter;
import org.eclipse.jface.text.formatter.MultiPassContentFormatter;
import org.eclipse.jface.text.source.ISourceViewer;
import org.eclipse.wst.css.core.internal.CSSCorePlugin;
import org.eclipse.wst.css.core.internal.format.FormatProcessorCSS;
import org.eclipse.wst.css.core.internal.preferences.CSSCorePreferenceNames;
import org.eclipse.wst.css.core.text.ICSSPartitions;
import org.eclipse.wst.css.ui.internal.contentassist.CSSStructuredContentAssistProcessor;
import org.eclipse.wst.css.ui.internal.style.LineStyleProviderForCSS;
import org.eclipse.wst.sse.core.text.IStructuredPartitions;
import org.eclipse.wst.sse.ui.StructuredTextViewerConfiguration;
import org.eclipse.wst.sse.ui.internal.format.StructuredFormattingStrategy;
import org.eclipse.wst.sse.ui.internal.provisional.style.LineStyleProvider;
/**
* Configuration for a source viewer which shows CSS.
* <p>
* Clients can subclass and override just those methods which must be specific
* to their needs.
* </p>
*
* @see org.eclipse.wst.sse.ui.StructuredTextViewerConfiguration
* @since 1.0
*/
public class StructuredTextViewerConfigurationCSS extends StructuredTextViewerConfiguration {
/*
* One instance per configuration because not sourceviewer-specific and
* it's a String array
*/
private String[] fConfiguredContentTypes;
/*
* One instance per configuration
*/
private LineStyleProvider fLineStyleProviderForCSS;
/**
* Create new instance of StructuredTextViewerConfigurationCSS
*/
public StructuredTextViewerConfigurationCSS() {
// Must have empty constructor to createExecutableExtension
super();
}
public IAutoEditStrategy[] getAutoEditStrategies(ISourceViewer sourceViewer, String contentType) {
List allStrategies = new ArrayList(0);
IAutoEditStrategy[] superStrategies = super.getAutoEditStrategies(sourceViewer, contentType);
for (int i = 0; i < superStrategies.length; i++) {
allStrategies.add(superStrategies[i]);
}
return (IAutoEditStrategy[]) allStrategies.toArray(new IAutoEditStrategy[0]);
}
public String[] getConfiguredContentTypes(ISourceViewer sourceViewer) {
if (fConfiguredContentTypes == null) {
fConfiguredContentTypes = new String[]{ICSSPartitions.STYLE, ICSSPartitions.COMMENT, IStructuredPartitions.DEFAULT_PARTITION, IStructuredPartitions.UNKNOWN_PARTITION};
}
return fConfiguredContentTypes;
}
/**
* @see org.eclipse.wst.sse.ui.StructuredTextViewerConfiguration#getContentAssistProcessors(
* org.eclipse.jface.text.source.ISourceViewer, java.lang.String)
*/
protected IContentAssistProcessor[] getContentAssistProcessors(ISourceViewer sourceViewer, String partitionType) {
IContentAssistProcessor processor = new CSSStructuredContentAssistProcessor(
this.getContentAssistant(), partitionType, sourceViewer);
return new IContentAssistProcessor[]{processor};
}
public IContentFormatter getContentFormatter(ISourceViewer sourceViewer) {
IContentFormatter formatter = super.getContentFormatter(sourceViewer);
// super was unable to create a formatter, probably because
// sourceViewer does not have document set yet, so just create a
// generic one
if (!(formatter instanceof MultiPassContentFormatter))
formatter = new MultiPassContentFormatter(getConfiguredDocumentPartitioning(sourceViewer), ICSSPartitions.STYLE);
((MultiPassContentFormatter) formatter).setMasterStrategy(new StructuredFormattingStrategy(new FormatProcessorCSS()));
return formatter;
}
public String[] getIndentPrefixes(ISourceViewer sourceViewer, String contentType) {
Vector vector = new Vector();
// prefix[0] is either '\t' or ' ' x tabWidth, depending on preference
Preferences preferences = CSSCorePlugin.getDefault().getPluginPreferences();
int indentationWidth = preferences.getInt(CSSCorePreferenceNames.INDENTATION_SIZE);
String indentCharPref = preferences.getString(CSSCorePreferenceNames.INDENTATION_CHAR);
boolean useSpaces = CSSCorePreferenceNames.SPACE.equals(indentCharPref);
for (int i = 0; i <= indentationWidth; i++) {
StringBuffer prefix = new StringBuffer();
boolean appendTab = false;
if (useSpaces) {
for (int j = 0; j + i < indentationWidth; j++)
prefix.append(' ');
if (i != 0)
appendTab = true;
}
else {
for (int j = 0; j < i; j++)
prefix.append(' ');
if (i != indentationWidth)
appendTab = true;
}
if (appendTab) {
prefix.append('\t');
vector.add(prefix.toString());
// remove the tab so that indentation - tab is also an indent
// prefix
prefix.deleteCharAt(prefix.length() - 1);
}
vector.add(prefix.toString());
}
vector.add(""); //$NON-NLS-1$
return (String[]) vector.toArray(new String[vector.size()]);
}
public LineStyleProvider[] getLineStyleProviders(ISourceViewer sourceViewer, String partitionType) {
LineStyleProvider[] providers = null;
if (partitionType == ICSSPartitions.STYLE || partitionType == ICSSPartitions.COMMENT) {
providers = new LineStyleProvider[]{getLineStyleProviderForCSS()};
}
return providers;
}
private LineStyleProvider getLineStyleProviderForCSS() {
if (fLineStyleProviderForCSS == null) {
fLineStyleProviderForCSS = new LineStyleProviderForCSS();
}
return fLineStyleProviderForCSS;
}
}
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