/*******************************************************************************
 * Copyright (c) 2000, 2004 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
 *******************************************************************************/

package org.eclipse.jdt.internal.ui.preferences;

import org.eclipse.core.resources.IProject;

import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;

import org.eclipse.ui.IWorkbenchPreferencePage;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.preferences.IWorkbenchPreferenceContainer;

import org.eclipse.jdt.internal.ui.IJavaHelpContextIds;


/**
 * Code Assist preference page.
 * <p>
 * Note: Must be public since it is referenced from plugin.xml
 * </p>
 * 
 * @since 3.0
 */
public class CodeAssistPreferencePage extends PropertyAndPreferencePage implements IWorkbenchPreferencePage {

	private CodeAssistConfigurationBlock fConfigurationBlock;

	public void createControl(Composite parent) {
		IWorkbenchPreferenceContainer container= (IWorkbenchPreferenceContainer) getContainer();
		fConfigurationBlock= new CodeAssistConfigurationBlock(getNewStatusChangedListener(), container);
		
		super.createControl(parent);
		PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(), IJavaHelpContextIds.JAVA_EDITOR_PREFERENCE_PAGE);
	}

	protected Control createPreferenceContent(Composite composite) {
		return fConfigurationBlock.createContents(composite);
	}

	protected boolean hasProjectSpecificOptions(IProject project) {
		return false;
	}

	protected String getPreferencePageID() {
		return "org.eclipse.jdt.ui.preferences.CodeAssistPreferencePage"; //$NON-NLS-1$
	}

	protected String getPropertyPageID() {
		return null;
	}
	
		/* (non-Javadoc)
	 * @see org.eclipse.jface.dialogs.DialogPage#dispose()
	 */
	public void dispose() {
		if (fConfigurationBlock != null) {
			fConfigurationBlock.dispose();
		}
		super.dispose();
	}
	
	/*
	 * @see org.eclipse.jface.preference.IPreferencePage#performDefaults()
	 */
	protected void performDefaults() {
		super.performDefaults();
		if (fConfigurationBlock != null) {
			fConfigurationBlock.performDefaults();
		}
	}

	/*
	 * @see org.eclipse.jface.preference.IPreferencePage#performOk()
	 */
	public boolean performOk() {
		if (fConfigurationBlock != null && !fConfigurationBlock.performOk(true)) {
			return false;
		}	
		return super.performOk();
	}
	
	/*
	 * @see org.eclipse.jface.preference.IPreferencePage#performApply()
	 */
	public void performApply() {
		if (fConfigurationBlock != null) {
			boolean enabled= !isProjectPreferencePage() || useProjectSettings();
			fConfigurationBlock.performApply(enabled);
		}
	}

}
