uk.ac.bath.cs.asp.ide.lparse.internal.preferences.LparsePreferencePage.java Source code

Introduction

Here is the source code for uk.ac.bath.cs.asp.ide.lparse.internal.preferences.LparsePreferencePage.java

Source

/**************
 * APE: AnsProlog* Programming Environment plug-in for the Eclipse platform
 * Copyright (C) 2006  Adrian Sureshkumar
 * 
 * This program is free software; you can redistribute it and/or modify it under the
 * terms of the GNU General Public License as published by the Free Software
 * Foundation; either version 2 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
 * PARTICULAR PURPOSE.  See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with this
 * program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street,
 * Fifth Floor, Boston, MA  02110-1301, USA.
 **************/

package uk.ac.bath.cs.asp.ide.lparse.internal.preferences;

import org.eclipse.core.runtime.preferences.InstanceScope;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.preference.FieldEditorPreferencePage;
import org.eclipse.jface.preference.FileFieldEditor;
import org.eclipse.swt.graphics.FontMetrics;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPreferencePage;
import org.eclipse.ui.preferences.ScopedPreferenceStore;

import uk.ac.bath.cs.asp.ide.lparse.LparsePreferenceConstants;

/**
 * Preference page for lparse
 * 
 * @author Adrian Sureshkumar
 */
public class LparsePreferencePage extends FieldEditorPreferencePage implements IWorkbenchPreferencePage {

    public LparsePreferencePage() {
        super(GRID);
        setPreferenceStore(new ScopedPreferenceStore(new InstanceScope(), "uk.ac.bath.cs.asp.ide.lparse"));
    }

    protected void createFieldEditors() {
        final Composite parent = getFieldEditorParent();

        final FileFieldEditor locationEditor = new FileFieldEditor(
                LparsePreferenceConstants.LPARSE_PROGRAM_LOCATION, "Program Location", parent);
        // locationEditor.setEmptyStringAllowed(false);

        // Limit the width of the text field to 20 characters
        final Text fileText = locationEditor.getTextControl(parent);

        final GC gc = new GC(fileText);
        gc.setFont(fileText.getFont());
        final FontMetrics fontMetrics = gc.getFontMetrics();
        gc.dispose();

        final int width = Dialog.convertWidthInCharsToPixels(fontMetrics, 20);

        final GridData gridData = (GridData) fileText.getLayoutData();
        gridData.widthHint = width;
        gridData.grabExcessHorizontalSpace = true;

        // Add the field to the page
        addField(locationEditor);
    }

    public void init(IWorkbench workbench) {
        // TODO Auto-generated method stub
    }

}