bundles/core/org.eclipse.apogy.core.environment.ui.jme3/src/org/eclipse/apogy/core/environment/ui/jme3/preferences/ApogyEnvironmentUIJME3PreferencesPage.java

/*******************************************************************************
 * Copyright (c) 2018 Agence spatiale canadienne / Canadian Space Agency 
 * 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:
 *     Pierre Allard,
 *     Regent L'Archeveque - initial API and implementation
 *
 * SPDX-License-Identifier: EPL-1.0
 *     
 *******************************************************************************/
package org.eclipse.apogy.core.environment.ui.jme3.preferences;

import java.util.ArrayList;
import java.util.List;

import org.eclipse.apogy.core.environment.ui.jme3.Activator;
import org.eclipse.jface.preference.FieldEditor;
import org.eclipse.jface.preference.PreferencePage;
import org.eclipse.jface.preference.StringFieldEditor;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPreferencePage;

public class ApogyEnvironmentUIJME3PreferencesPage extends PreferencePage implements IWorkbenchPreferencePage {

	private StringFieldEditor shadowMapSizeEditor;

	private final List<FieldEditor> editors = new ArrayList<FieldEditor>();

	/**
	 * Create the preference page.
	 */
	public ApogyEnvironmentUIJME3PreferencesPage() {
	}

	/**
	 * Create contents of the preference page.
	 * 
	 * @param parent
	 */
	@Override
	public Control createContents(Composite parent) {
		Composite container = new Composite(parent, SWT.NULL);
		container.setLayout(new GridLayout(1, true));

		// Shadows.
		Group earthSkyGroup = new Group(container, SWT.NONE);
		earthSkyGroup.setLayout(new GridLayout(2, true));
		earthSkyGroup.setLayoutData(new GridData(SWT.FILL, SWT.TOP, true, true, 1, 1));
		earthSkyGroup.setText("Shadows");

		Label earthSkyShadowMapSizeLabel = new Label(earthSkyGroup, SWT.NONE);
		earthSkyShadowMapSizeLabel.setLayoutData(new GridData(SWT.LEFT, SWT.CENTER, true, true, 1, 1));
		earthSkyShadowMapSizeLabel.setText("Shadow Map Size");
		this.shadowMapSizeEditor = createStringFieldEditor(earthSkyGroup,
				ApogyEnvironmentUIJME3PreferencesConstants.DEFAULT_SHADOW_MAP_SIZE_ID, "");
		this.editors.add(this.shadowMapSizeEditor);

		return container;
	}

	/**
	 * Initialize the preference page.
	 */
	@Override
	public void init(IWorkbench workbench) {
		setPreferenceStore(Activator.getDefault().getPreferenceStore());
	}

	@Override
	public boolean performOk() {
		storePreferences();
		return super.performOk();
	}

	@Override
	protected void performApply() {
		storePreferences();
		super.performApply();
	}

	@Override
	protected void performDefaults() {
		for (FieldEditor editor : this.editors) {
			editor.loadDefault();
		}

		super.performDefaults();
	}

	private StringFieldEditor createStringFieldEditor(final Composite container, final String preferenceID,
			final String preferenceLabel) {
		Composite editorContainer = new Composite(container, SWT.NULL);
		editorContainer.setLayout(new GridLayout(1, true));
		editorContainer.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true, 1, 1));

		StringFieldEditor editor = new StringFieldEditor(preferenceID, preferenceLabel, editorContainer);

		// Set the editor up to use this page
		editor.setPreferenceStore(getPreferenceStore());
		editor.load();

		return editor;
	}

	private void storePreferences() {
		for (FieldEditor editor : this.editors) {
			editor.store();
		}
	}
}