org.eclipse.birt.report.designer.internal.ui.script.JSSourceViewerConfiguration.java Source code

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Here is the source code for org.eclipse.birt.report.designer.internal.ui.script.JSSourceViewerConfiguration.java

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/*************************************************************************************
 * Copyright (c) 2004 Actuate 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:
 *     Actuate Corporation - Initial implementation.
 ************************************************************************************/

package org.eclipse.birt.report.designer.internal.ui.script;

import org.eclipse.birt.report.designer.internal.ui.editors.ReportColorConstants;
import org.eclipse.birt.report.designer.internal.ui.util.UIUtil;
import org.eclipse.birt.report.designer.ui.ReportPlugin;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.contentassist.ContentAssistant;
import org.eclipse.jface.text.contentassist.IContentAssistant;
import org.eclipse.jface.text.presentation.IPresentationReconciler;
import org.eclipse.jface.text.presentation.PresentationReconciler;
import org.eclipse.jface.text.rules.DefaultDamagerRepairer;
import org.eclipse.jface.text.rules.RuleBasedScanner;
import org.eclipse.jface.text.rules.Token;
import org.eclipse.jface.text.source.ISourceViewer;
import org.eclipse.jface.text.source.SourceViewer;
import org.eclipse.jface.text.source.SourceViewerConfiguration;
import org.eclipse.swt.graphics.Color;

/**
 * Sets JS configuration the editor needs
 * 
 */
public class JSSourceViewerConfiguration extends SourceViewerConfiguration {

    private RuleBasedScanner scanner;
    protected JSSyntaxContext context;

    public JSSourceViewerConfiguration() {
        this(new JSSyntaxContext());
    }

    public JSSourceViewerConfiguration(JSSyntaxContext context) {
        this.context = context;
    }

    /**
     * gets color for a given category
     * 
     * @param categoryColor
     * @return Color
     */
    public static Color getColorByCategory(String categoryColor) {
        return getRgbString(categoryColor);
    }

    /**
     * @see SourceViewerConfiguration#getConfiguredContentTypes(ISourceViewer)
     */
    public String[] getConfiguredContentTypes(ISourceViewer sourceViewer) {
        return new String[] { IDocument.DEFAULT_CONTENT_TYPE, JSPartitionScanner.JS_COMMENT,
                JSPartitionScanner.JS_KEYWORD, JSPartitionScanner.JS_STRING };
    }

    /**
     * Gets default scanner
     * 
     * @return scanner
     */
    protected RuleBasedScanner getDefaultScanner() {
        if (scanner == null) {
            scanner = new JSScanner();
            scanner.setDefaultReturnToken(
                    new Token(UIUtil.getAttributeFor(ReportPlugin.EXPRESSION_CONTENT_COLOR_PREFERENCE)));
        }
        return scanner;
    }

    /**
     * @see SourceViewerConfiguration#getPresentationReconciler(ISourceViewer)
     */
    public IPresentationReconciler getPresentationReconciler(ISourceViewer sourceViewer) {
        PresentationReconciler reconciler = new PresentationReconciler();

        DefaultDamagerRepairer dr = new DefaultDamagerRepairer(getDefaultScanner());
        reconciler.setDamager(dr, IDocument.DEFAULT_CONTENT_TYPE);
        reconciler.setRepairer(dr, IDocument.DEFAULT_CONTENT_TYPE);

        NonRuleBasedDamagerRepairer commentRepairer = new NonRuleBasedDamagerRepairer(
                UIUtil.getAttributeFor(ReportPlugin.EXPRESSION_COMMENT_COLOR_PREFERENCE));
        reconciler.setDamager(commentRepairer, JSPartitionScanner.JS_COMMENT);
        reconciler.setRepairer(commentRepairer, JSPartitionScanner.JS_COMMENT);

        NonRuleBasedDamagerRepairer stringRepairer = new NonRuleBasedDamagerRepairer(
                UIUtil.getAttributeFor(ReportPlugin.EXPRESSION_STRING_COLOR_PREFERENCE));
        reconciler.setDamager(stringRepairer, JSPartitionScanner.JS_STRING);
        reconciler.setRepairer(stringRepairer, JSPartitionScanner.JS_STRING);

        NonRuleBasedDamagerRepairer keywordRepairer = new NonRuleBasedDamagerRepairer(
                UIUtil.getAttributeFor(ReportPlugin.EXPRESSION_KEYWORD_COLOR_PREFERENCE));
        reconciler.setDamager(keywordRepairer, JSPartitionScanner.JS_KEYWORD);
        reconciler.setRepairer(keywordRepairer, JSPartitionScanner.JS_KEYWORD);

        return reconciler;
    }

    private static Color getRgbString(String name) {
        if (PreferenceNames.P_COMMENT_COLOR.equals(name)) {
            //rgbStr = "63,127,95"; //$NON-NLS-1$
            return ReportColorConstants.JSCOMMENTCOLOR;
        } else if (PreferenceNames.P_STRING_COLOR.equals(name)) {
            //rgbStr = "42,0,255"; //$NON-NLS-1$
            return ReportColorConstants.JSSTRINGCOLOR;
        } else if (PreferenceNames.P_KEYWORD_COLOR.equals(name)) {
            //rgbStr = "127,0,85"; //$NON-NLS-1$
            return ReportColorConstants.JSKEYWORDCOLOR;
        } else if (PreferenceNames.P_LINENUMBER_COLOR.equals(name)) {
            //rgbStr = "127,127,127"; //$NON-NLS-1$
            return ReportColorConstants.JSLINENUMBERCOLOR;
        }
        return ReportColorConstants.ReportForeground;
    }

    public IContentAssistant getContentAssistant(ISourceViewer sourceViewer) {
        ContentAssistant assistant = new ContentAssistant();
        assistant.setContentAssistProcessor(new JSCompletionProcessor(context), IDocument.DEFAULT_CONTENT_TYPE);
        assistant.enableAutoActivation(true);
        assistant.setAutoActivationDelay(500);
        assistant.setProposalPopupOrientation(IContentAssistant.PROPOSAL_OVERLAY);
        return assistant;
    }

    public void resetScannerColor() {
        if (scanner != null) {
            scanner.setDefaultReturnToken(
                    new Token(UIUtil.getAttributeFor(ReportPlugin.EXPRESSION_CONTENT_COLOR_PREFERENCE)));
        }
    }

    public static void updateSourceFont(SourceViewer sourceViewer) {
        // Always set default text font to source viewer
        sourceViewer.getTextWidget().setFont(JFaceResources.getTextFont());
    }
}