org.eclipse.stem.ui.populationmodels.preferences.PopulationPreferencePage.java Source code

Introduction

Here is the source code for org.eclipse.stem.ui.populationmodels.preferences.PopulationPreferencePage.java

Source

package org.eclipse.stem.ui.populationmodels.preferences;

/*******************************************************************************
 * Copyright (c) 2006 IBM Corporation 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/

import org.eclipse.jface.preference.FieldEditorPreferencePage;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.preference.StringFieldEditor;
import org.eclipse.stem.ui.Activator;
import org.eclipse.stem.ui.populationmodels.standard.wizards.PopulationModelWizardMessages;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPreferencePage;

/**
 * This class represents a preference page that is contributed to the
 * Preferences dialog. By sub-classing <samp>FieldEditorPreferencePage</samp>,
 * we can use the field support built into JFace that allows us to create a page
 * that is small and knows how to save, restore and apply itself.
 * <p>
 * This page is used to modify preferences only. They are stored in the
 * preference store that belongs to the main plug-in class. That way,
 * preferences can be accessed directly via the preference store.
 */

public class PopulationPreferencePage extends FieldEditorPreferencePage implements IWorkbenchPreferencePage {

    /**
     * Constructor
     */
    public PopulationPreferencePage() {
        super(GRID);
        setPreferenceStore(Activator.getDefault().getPreferenceStore());
        setDescription(PopulationModelWizardMessages.getString("PopulationPPageTITLE")); //$NON-NLS-1$
    }

    /**
     * Creates the field editors. Field editors are abstractions of the common
     * GUI blocks needed to manipulate various types of preferences. Each field
     * editor knows how to save and restore itself.
     */
    @Override
    public void createFieldEditors() {

        IPreferenceStore store = Activator.getDefault().getPreferenceStore();
        long refPop = store.getLong(PreferenceConstants.REFERENCE_POPULATION);
        long refDens = store.getLong(PreferenceConstants.REFERENCE_DENSITY);

        final StringFieldEditor referencePopulationThreadsFieldEditor = new StringFieldEditor(
                PreferenceConstants.REFERENCE_POPULATION,
                PopulationModelWizardMessages.getString("ReferencePopulation"), getFieldEditorParent()); //$NON-NLS-1$

        referencePopulationThreadsFieldEditor.setStringValue("" + refPop);
        addField(referencePopulationThreadsFieldEditor);

        final StringFieldEditor referenceDensityThreadsFieldEditor = new StringFieldEditor(
                PreferenceConstants.REFERENCE_DENSITY, PopulationModelWizardMessages.getString("ReferenceDensity"), //$NON-NLS-1$
                getFieldEditorParent());
        referencePopulationThreadsFieldEditor.setStringValue("" + refDens);
        addField(referenceDensityThreadsFieldEditor);

    } // createFieldEditors

    /**
     * @see org.eclipse.ui.IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench)
     */
    public void init(IWorkbench workbench) {
        // Nothing
    }

} // PopulationPreferencePage