/*******************************************************************************
 * Copyright (c) 2009, 2010 Progress Software Corporation.
 * 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
 ******************************************************************************/
package org.fusesource.tools.core.ui;

import org.eclipse.jface.preference.FieldEditor;
import org.eclipse.jface.text.source.SourceViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;

public class XMLViewerComponentEditor extends FieldEditor {

    protected SourceViewer xmlViewer;

    protected String defaultString;

    public XMLViewerComponentEditor(Composite parent, String tracerPreference, String defaultString) {
        createControl(parent);
        this.defaultString = defaultString;
        setPreferenceName(tracerPreference);
    }

    @Override
    protected void adjustForNumColumns(int numColumns) {
    }

    @Override
    protected void doFillIntoGrid(Composite parent, int numColumns) {
        Composite composite = new Composite(parent, SWT.NONE);
        GridData gridData = new GridData(SWT.FILL, SWT.FILL, true, true);
        gridData.horizontalSpan = numColumns;
        composite.setLayoutData(gridData);
        composite.setLayout(new FillLayout());

        xmlViewer = TextViewerComponent.createXMLViewer(composite, SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL);
        xmlViewer.getDocument().set(defaultString);
    }

    @Override
    protected void doLoad() {
        String tracerBean = getPreferenceStore().getString(getPreferenceName());
        if (tracerBean == null) {
            xmlViewer.getDocument().set(defaultString);
        }
        xmlViewer.getDocument().set(tracerBean);
    }

    @Override
    protected void doLoadDefault() {
        xmlViewer.getDocument().set(defaultString);
    }

    @Override
    protected void doStore() {
        getPreferenceStore().setValue(getPreferenceName(), xmlViewer.getDocument().get());
    }

    @Override
    public int getNumberOfControls() {
        return 1;
    }
}