org.eclipse.osbp.preferences.ui.page/src/org/eclipse/osbp/preferences/ui/component/HookedBooleanFieldEditor.java

/**
 *                                                                            
 * Copyright (c) 2011, 2016 - Loetz GmbH&Co.KG (69115 Heidelberg, Germany)
 *                                                                            
 * 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:   
 * Christophe Loetz (Loetz GmbH&Co.KG) - initial implementation 
 */
package org.eclipse.osbp.preferences.ui.component;

import org.eclipse.jface.preference.BooleanFieldEditor;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.CLabel;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.events.KeyEvent;
import org.eclipse.swt.events.KeyListener;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;

public class HookedBooleanFieldEditor extends BooleanFieldEditor {

    protected CLabel label;
	
	public HookedBooleanFieldEditor(String name, String label, Composite parent) {
		super(name, label, SEPARATE_LABEL, parent);
	}

	@Override
	protected void doFillIntoGrid(Composite parent, int numColumns) {
		super.doFillIntoGrid(parent, numColumns);
		getChangeControl(parent).addKeyListener(new KeyListener() {
			@Override
			public void keyReleased(KeyEvent e) {
			}
			@Override
			public void keyPressed(KeyEvent e) {
				showDefaultHint();
			}
		});
		getChangeControl(parent).addSelectionListener(new SelectionListener() {
			@Override
			public void widgetSelected(SelectionEvent e) {
				showDefaultHint();
			}
			@Override
			public void widgetDefaultSelected(SelectionEvent e) {
			}
		});
	}

	protected void showDefaultHint() {
		APreferencePage.showLabelDefaultHint(label, getBooleanValue() == getPreferenceStore().getDefaultBoolean(getPreferenceName()));
	}
	
	@Override
    public Label getLabelControl(Composite parent) {
        if (label == null) {
            label = new CLabel(parent, SWT.LEFT | SWT.RIGHT_TO_LEFT);
            label.setFont(parent.getFont());
            String text = getLabelText();
            if (text != null) {
				label.setText(text);
			}
            label.addDisposeListener(new DisposeListener() {
                @Override
				public void widgetDisposed(DisposeEvent event) {
                    label = null;
                }
            });
        } else {
            checkParent(label, parent);
        }
        return null;
    }

	@Override
    public void setEnabled(boolean enabled, Composite parent) {
        label.setEnabled(enabled);
    }
	
	@Override
	protected void doLoad() {
		super.doLoad();
		showDefaultHint();
	}

	@Override
	protected void doLoadDefault() {
		super.doLoadDefault();
		showDefaultHint();
	}
}