org.eclipse.papyrus.infra.gmfdiag.preferences.jface.preference.FontFieldEditor.java Source code

Introduction

Here is the source code for org.eclipse.papyrus.infra.gmfdiag.preferences.jface.preference.FontFieldEditor.java

Source

/****************************************************************************
 * Copyright (c) 2008 Atos Origin.
 *  
 * 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:
 *      Thibault Landre (Atos Origin) - Initial API and implementation
 *
 *****************************************************************************/

package org.eclipse.papyrus.infra.gmfdiag.preferences.jface.preference;

import org.eclipse.gmf.runtime.common.core.util.StringStatics;
import org.eclipse.gmf.runtime.diagram.ui.properties.internal.l10n.DiagramUIPropertiesImages;
import org.eclipse.gmf.runtime.diagram.ui.properties.internal.l10n.DiagramUIPropertiesMessages;
import org.eclipse.jface.preference.FieldEditor;
import org.eclipse.jface.preference.PreferenceConverter;
import org.eclipse.papyrus.infra.gmfdiag.preferences.utils.FontHelper;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Composite;

/**
 * A field editor for GMF Font preferences. This field editor handles :
 * <ul>
 * <li>Font Style</li>
 * <li>Font Size</li>
 * <li>Bold</li>
 * <li>Italic</li>
 * </ul>
 * This field editor is inspired by the class {@link org.eclipse.gmf.runtime.diagram.ui.properties.sections.appearance.ColorsAndFontsPropertySection
 * <em>ColorsAndFontsPropertySection</em>}
 * 
 * @author tlandre
 */
public class FontFieldEditor extends FieldEditor {

    private Button fontBoldButton;

    private Button fontItalicButton;

    private Combo fontNameCombo;

    private Combo fontSizeCombo;

    /** value changed string */
    // @unused
    static protected String VALUE_CHANGED_STRING = DiagramUIPropertiesMessages.AbstractPropertySection_UndoIntervalPropertyString;

    /** properties */
    // @unused
    protected static final String FONT_COMMAND_NAME = DiagramUIPropertiesMessages.Font_commandText
            + StringStatics.SPACE + VALUE_CHANGED_STRING;

    // @unused
    protected static final String FONTS_AND_COLORS_LABEL = DiagramUIPropertiesMessages.FontAndColor_nameLabel;

    private FontData fontData;

    /**
     * Constructor
     * 
     * @param preferenceName
     *        the preference used for the Font
     * @param parent
     *        the parent composite in which this field editor will be placed.
     */
    public FontFieldEditor(String preferenceName, Composite parent) {
        super(preferenceName, "", parent); //$NON-NLS-1$
    }

    /**
     * @see org.eclipse.jface.preference.FieldEditor#adjustForNumColumns(int)
     */
    @Override
    protected void adjustForNumColumns(int numColumns) {
        // TODO Auto-generated method stub

    }

    /**
     * @see org.eclipse.jface.preference.FieldEditor#doFillIntoGrid(org.eclipse.swt.widgets.Composite, int)
     */
    @Override
    protected void doFillIntoGrid(Composite parent, int numColumns) {
        // TODO Auto-generated method stub

    }

    /**
     * @see org.eclipse.jface.preference.FieldEditor#doLoad()
     */
    @Override
    protected void doLoad() {
        fontData = PreferenceConverter.getFontData(getPreferenceStore(), getPreferenceName());
        initFontData();
    }

    /**
     * @see org.eclipse.jface.preference.FieldEditor#doLoadDefault()
     */
    @Override
    protected void doLoadDefault() {
        fontData = PreferenceConverter.getDefaultFontData(getPreferenceStore(), getPreferenceName());
        initFontData();
    }

    private void initFontData() {

        // Name Combo
        fontNameCombo.setText(fontData.getName());
        // Size combo
        fontSizeCombo.setText("" + fontData.getHeight()); //$NON-NLS-1$

        int style = fontData.getStyle();
        // Bold Button
        if ((style & SWT.BOLD) == SWT.BOLD) {
            fontBoldButton.setSelection(true);
        } else {
            fontBoldButton.setSelection(false);
        }
        // Italic Button
        if ((style & SWT.ITALIC) == SWT.ITALIC) {
            fontItalicButton.setSelection(true);
        } else {
            fontItalicButton.setSelection(false);
        }
    }

    /**
     * @see org.eclipse.jface.preference.FieldEditor#doStore()
     */
    @Override
    protected void doStore() {
        fontData = new FontData();
        fontData.setName(fontNameCombo.getText());
        fontData.setHeight(Integer.parseInt(fontSizeCombo.getText()));
        fontData.setStyle(getStyle());
        PreferenceConverter.setValue(getPreferenceStore(), getPreferenceName(), fontData);

    }

    private int getStyle() {
        int style = SWT.NORMAL;
        if (fontBoldButton.getSelection()) {
            style |= SWT.BOLD;
        }
        if (fontItalicButton.getSelection()) {
            style |= SWT.ITALIC;
        }
        return style;
    }

    @Override
    public void dispose() {
        super.dispose();
        fontBoldButton.dispose();
        fontItalicButton.dispose();
        fontNameCombo.dispose();
        fontSizeCombo.dispose();
    }

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

    @Override
    protected void createControl(Composite parent) {
        Composite compo = new Composite(parent, SWT.NONE);
        GridLayout gl = new GridLayout(3, false);
        gl.marginWidth = 0;
        gl.marginHeight = 0;
        compo.setLayout(gl);

        fontNameCombo = new Combo(compo, SWT.DROP_DOWN | SWT.READ_ONLY | SWT.BORDER);
        fontNameCombo.setItems(FontHelper.getFontNames());

        GridData gridData = new GridData(SWT.BEGINNING, SWT.CENTER, true, false);
        gridData.horizontalSpan = 3;

        fontNameCombo.setLayoutData(gridData);

        fontBoldButton = new Button(compo, SWT.TOGGLE);
        fontBoldButton.setImage(DiagramUIPropertiesImages.get(DiagramUIPropertiesImages.IMG_BOLD));

        fontItalicButton = new Button(compo, SWT.TOGGLE);
        fontItalicButton.setImage(DiagramUIPropertiesImages.get(DiagramUIPropertiesImages.IMG_ITALIC));

        fontSizeCombo = new Combo(compo, SWT.DROP_DOWN | SWT.READ_ONLY | SWT.BORDER);
        fontSizeCombo.setItems(FontHelper.getFontSizes());

        gridData = new GridData(SWT.END, SWT.CENTER, true, false);
        fontSizeCombo.setLayoutData(gridData);

    }

}