org.eclipse.rcptt.ui.editors.ecl.EclSourceViewer.java Source code

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Here is the source code for org.eclipse.rcptt.ui.editors.ecl.EclSourceViewer.java

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/*******************************************************************************
 * Copyright (c) 2009, 2014 Xored Software Inc 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:
 *     Xored Software Inc - initial API and implementation and/or initial documentation
 *******************************************************************************/
package org.eclipse.rcptt.ui.editors.ecl;

import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.text.source.CompositeRuler;
import org.eclipse.jface.text.source.IOverviewRuler;
import org.eclipse.jface.text.source.IVerticalRuler;
import org.eclipse.jface.text.source.LineNumberRulerColumn;
import org.eclipse.jface.text.source.SourceViewerConfiguration;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.widgets.Composite;

import org.eclipse.rcptt.core.model.IQ7NamedElement;
import org.eclipse.rcptt.core.ecl.model.Q7ElementContainer;

public class EclSourceViewer extends EnhancedSourceViewer {

    private Q7ElementContainer elementContainer;
    private IQ7NamedElement element;

    public EclSourceViewer(Composite parent, IVerticalRuler ruler) {
        this(parent, ruler, null, false, SWT.MULTI | SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
    }

    public EclSourceViewer(Composite parent, IVerticalRuler ruler, IOverviewRuler overviewRuler,
            boolean showsAnnotationOverview, int styles) {
        super(parent, ruler, overviewRuler, showsAnnotationOverview, styles);
    }

    @Override
    public void configure(SourceViewerConfiguration configuration) {
        super.configure(configuration);
    };

    @Override
    public Composite getControl() {
        return (Composite) super.getControl();
    }

    public static EclSourceViewer createEclSourceViewer(Composite parent) {
        CompositeRuler ruler = new CompositeRuler();
        LineNumberRulerColumn column = new LineNumberRulerColumn() {
            @Override
            public int getWidth() {
                return super.getWidth() + 10;
            }
        };
        Font font = JFaceResources.getTextFont();
        column.setFont(font);
        column.setForeground(parent.getDisplay().getSystemColor(SWT.COLOR_DARK_GRAY));
        ruler.addDecorator(0, column);
        return new EclSourceViewer(parent, ruler);
    }

    public void ignoreAutoEditStrategies(boolean ignore) {
        super.ignoreAutoEditStrategies(ignore);
    }

    public synchronized Q7ElementContainer getElementContainer() {
        if (elementContainer != null && this.element != null) {
            if (!elementContainer.isSameContent(getDocument().get(), element)) {
                elementContainer = null;
            }
        }
        if (elementContainer == null) {
            elementContainer = new Q7ElementContainer(element, getDocument().get(), getDocument().getLength(),
                    true);
        }
        return elementContainer;
    }

    public synchronized void clearElementContainer() {
        if (elementContainer != null && this.element != null) {
            if (elementContainer.isSameContent(getDocument().get(), element)) {
                return; // Don't need to clear it is same.
            }
        }
        this.elementContainer = null;
    }

    public IQ7NamedElement getElement() {
        return this.element;
    }

    public void setElement(IQ7NamedElement element) {
        if (elementContainer != null) {
            this.elementContainer = null;
        }
        this.element = element;
    }
}