org.jboss.tools.asciidoc.texteditor.internal.document.partition.AbstractPartitionScanner.java Source code

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Here is the source code for org.jboss.tools.asciidoc.texteditor.internal.document.partition.AbstractPartitionScanner.java

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/******************************************************************************* 
 * Copyright (c) 2008 Red Hat, Inc. 
 * Distributed under license by Red Hat, Inc. All rights reserved. 
 * This program is 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: 
 * Xavier Coulon - Initial API and implementation 
 ******************************************************************************/

package org.jboss.tools.asciidoc.texteditor.internal.document.partition;

import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.text.TextAttribute;
import org.eclipse.jface.text.rules.RuleBasedScanner;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.jboss.tools.asciidoc.texteditor.AsciidocTextEditorActivator;
import org.jboss.tools.asciidoc.texteditor.internal.preferences.ColorManager;
import org.jboss.tools.asciidoc.texteditor.internal.preferences.IPreferenceConstants;

/**
 * @author xcoulon
 * 
 */
public abstract class AbstractPartitionScanner extends RuleBasedScanner implements IPartitionScanner {

    /**
     * Generates a {@link TextAttribute} for the given colorId, using the
     * {@link IPreferenceStore} to determine the style to apply.
     * 
     * @param colorId the text color id 
     * @param defaultBold ?  if the text should be bold by default (ie, if plugin's {@link IPreferenceStore} has no specific value for the given colorId
     * @param italic if the text should be italic by default (ie, if plugin's {@link IPreferenceStore} has no specific value for the given colorId
     * @return the style ({@link TextAttribute}) that will be applied on the text matching the rule in the partition.
     * @see {@link ColorManager}
     */
    static TextAttribute createTextAttribute(final String colorId, final int defaultBold, final int defaultItalic) {
        final Color color = ColorManager.getColor(colorId);
        final IPreferenceStore store = AsciidocTextEditorActivator.getDefault().getPreferenceStore();
        final int style = getBoldStyle(store, colorId + IPreferenceConstants.BOLD_SUFFIX, defaultBold)
                + getItalicStyle(store, colorId + IPreferenceConstants.ITALIC_SUFFIX, defaultItalic);
        return new TextAttribute(color, null, style);
    }

    private static int getBoldStyle(final IPreferenceStore store, final String key, final int defaultValue) {
        if (store.contains(key)) {
            return store.getBoolean(key) ? SWT.BOLD : SWT.NORMAL;
        }
        return defaultValue;
    }

    private static int getItalicStyle(final IPreferenceStore store, final String key, final int defaultValue) {
        if (store.contains(key)) {
            return store.getBoolean(key) ? SWT.ITALIC : SWT.NORMAL;
        }
        return defaultValue;

    }
}