/*

* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). 

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

*

* Configuration interface implementation

*

*/

package com.nokia.tracebuilder.preferences;

import java.util.ArrayList;

import java.util.Iterator;

import org.eclipse.jface.preference.IPreferenceStore;

import org.eclipse.jface.util.IPropertyChangeListener;

import org.eclipse.jface.util.PropertyChangeEvent;

import com.nokia.tracebuilder.engine.TraceBuilderConfiguration;

import com.nokia.tracebuilder.engine.TraceBuilderConfigurationListener;

import com.nokia.tracebuilder.view.TraceViewPlugin;

/**

 * Configuration interface implementation

 * 

 */

public final class ConfigurationImpl implements TraceBuilderConfiguration {

	/**

	 * UI preferences

	 */

	private IPreferenceStore uiPreferences;

	/**

	 * List of configuration listeners

	 */

	private ArrayList<TraceBuilderConfigurationListener> configurationListeners;

	/**

	 * Property change listener for preferences

	 */

	private IPropertyChangeListener propertyChangeListener = new IPropertyChangeListener() {

		/*

		 * (non-Javadoc)

		 * 

		 * @see org.eclipse.jface.util.IPropertyChangeListener#

		 *      propertyChange(org.eclipse.jface.util.PropertyChangeEvent)

		 */

		public void propertyChange(PropertyChangeEvent event) {

			if (configurationListeners != null) {

				Iterator<TraceBuilderConfigurationListener> itr = configurationListeners

						.iterator();

				while (itr.hasNext()) {

					itr.next().configurationChanged(event.getProperty(),

							event.getNewValue());

				}

			}

		}

	};

	/**

	 * Constructor

	 */

	public ConfigurationImpl() {

		uiPreferences = TraceViewPlugin.getDefault().getPreferenceStore();

		setDefaults();

		uiPreferences.addPropertyChangeListener(propertyChangeListener);

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see com.nokia.tracebuilder.engine.TraceBuilderConfiguration#hasEntry(java.lang.String)

	 */

	public boolean hasEntry(String entryName) {

		return uiPreferences.contains(entryName);

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see com.nokia.tracebuilder.engine.TraceBuilderConfiguration#setFlag(java.lang.String,

	 *      boolean)

	 */

	public void setFlag(String flagName, boolean flag) {

		uiPreferences.setValue(flagName, flag);

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see com.nokia.tracebuilder.engine.TraceBuilderConfiguration#getFlag(java.lang.String)

	 */

	public boolean getFlag(String flagName) {

		return uiPreferences.getBoolean(flagName);

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see com.nokia.tracebuilder.engine.TraceBuilderConfiguration#setValue(java.lang.String,

	 *      int)

	 */

	public void setValue(String valueName, int value) {

		uiPreferences.setValue(valueName, value);

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see com.nokia.tracebuilder.engine.TraceBuilderConfiguration#getValue(java.lang.String)

	 */

	public int getValue(String valueName) {

		return uiPreferences.getInt(valueName);

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see com.nokia.tracebuilder.engine.TraceBuilderConfiguration#setText(java.lang.String,

	 *      java.lang.String)

	 */

	public void setText(String textName, String text) {

		uiPreferences.setValue(textName, text);

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see com.nokia.tracebuilder.engine.TraceBuilderConfiguration#getText(java.lang.String)

	 */

	public String getText(String textName) {

		return uiPreferences.getString(textName);

	}

	/**

	 * Sets default values for configuration entries not found from

	 * configuration file

	 */

	private void setDefaults() {

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see com.nokia.tracebuilder.engine.TraceBuilderConfiguration#

	 *      addConfigurationListener(com.nokia.tracebuilder.engine.TraceBuilderConfigurationListener)

	 */

	public void addConfigurationListener(

			TraceBuilderConfigurationListener configurationListener) {

		if (configurationListeners == null) {

			configurationListeners = new ArrayList<TraceBuilderConfigurationListener>();

		}

		configurationListeners.add(configurationListener);

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see com.nokia.tracebuilder.engine.TraceBuilderConfiguration#

	 *      removeConfigurationListener(com.nokia.tracebuilder.engine.TraceBuilderConfigurationListener)

	 */

	public void removeConfigurationListener(

			TraceBuilderConfigurationListener configurationListener) {

		if (configurationListeners != null) {

			configurationListeners.remove(configurationListener);

		}

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see com.nokia.tracebuilder.engine.TraceBuilderConfiguration#isAvailable()

	 */

	public boolean isAvailable() {

		return true;

	}

}