/*
 *(c) Copyright QNX Software Systems Ltd. 2002.
 * All Rights Reserved.
 * 
 */
package org.eclipse.cdt.debug.internal.ui.actions;

import java.util.HashMap;

import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.jface.util.IPropertyChangeListener;
import org.eclipse.jface.util.ListenerList;
import org.eclipse.jface.util.PropertyChangeEvent;

/**
 * 
 * A preference store that presents the state of the properties
 * of a C/C++ breakpoint. Default settings are not supported.
 * 
 * @since Aug 27, 2002
 */
public class CBreakpointPreferenceStore implements IPreferenceStore
{
	protected final static String ENABLED = "ENABLED"; //$NON-NLS-1$
	protected final static String CONDITION = "CONDITION"; //$NON-NLS-1$
	protected final static String IGNORE_COUNT = "IGNORE_COUNT"; //$NON-NLS-1$

	protected HashMap fProperties;
	private boolean fIsDirty = false; 
	private ListenerList fListeners;

	/**
	 * Constructor for CBreakpointPreferenceStore.
	 */
	public CBreakpointPreferenceStore()
	{
		fProperties = new HashMap( 3 );
		fListeners = new ListenerList();
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#addPropertyChangeListener(IPropertyChangeListener)
	 */
	public void addPropertyChangeListener( IPropertyChangeListener listener )
	{
		fListeners.add( listener );
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#contains(String)
	 */
	public boolean contains( String name )
	{
		return fProperties.containsKey( name );
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#firePropertyChangeEvent(String, Object, Object)
	 */
	public void firePropertyChangeEvent( String name, Object oldValue, Object newValue )
	{
		Object[] listeners = fListeners.getListeners();
		if ( listeners.length > 0 && (oldValue == null || !oldValue.equals( newValue ) ) ) 
		{
			PropertyChangeEvent pe = new PropertyChangeEvent( this, name, oldValue, newValue );
			for ( int i = 0; i < listeners.length; ++i ) 
			{
				IPropertyChangeListener l = (IPropertyChangeListener)listeners[i];
				l.propertyChange( pe );
			}
		}
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#getBoolean(String)
	 */
	public boolean getBoolean( String name )
	{
		Object b = fProperties.get( name );
		if ( b instanceof Boolean )
		{
			return ((Boolean)b).booleanValue();
		}
		return false;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#getDefaultBoolean(String)
	 */
	public boolean getDefaultBoolean( String name )
	{
		return false;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#getDefaultDouble(String)
	 */
	public double getDefaultDouble( String name )
	{
		return 0;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#getDefaultFloat(String)
	 */
	public float getDefaultFloat( String name )
	{
		return 0;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#getDefaultInt(String)
	 */
	public int getDefaultInt( String name )
	{
		return 0;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#getDefaultLong(String)
	 */
	public long getDefaultLong( String name )
	{
		return 0;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#getDefaultString(String)
	 */
	public String getDefaultString( String name )
	{
		return null;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#getDouble(String)
	 */
	public double getDouble( String name )
	{
		return 0;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#getFloat(String)
	 */
	public float getFloat( String name )
	{
		return 0;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#getInt(String)
	 */
	public int getInt( String name )
	{
		Object i = fProperties.get( name );
		if ( i instanceof Integer )
		{
			return ((Integer)i).intValue();
		}
		return 1;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#getLong(String)
	 */
	public long getLong( String name )
	{
		return 0;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#getString(String)
	 */
	public String getString( String name )
	{
		Object str = fProperties.get( name );
		if ( str instanceof String )
		{
			return (String)str;
		}
		return null;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#isDefault(String)
	 */
	public boolean isDefault( String name )
	{
		return false;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#needsSaving()
	 */
	public boolean needsSaving()
	{
		return fIsDirty;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#putValue(String, String)
	 */
	public void putValue( String name, String newValue )
	{
		Object oldValue = fProperties.get( name );
		if ( oldValue == null || !oldValue.equals( newValue ) )
		{
			fProperties.put( name, newValue );
			setDirty( true );
		}
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#removePropertyChangeListener(IPropertyChangeListener)
	 */
	public void removePropertyChangeListener( IPropertyChangeListener listener )
	{
		fListeners.remove( listener );
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#setDefault(String, double)
	 */
	public void setDefault( String name, double value )
	{
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#setDefault(String, float)
	 */
	public void setDefault( String name, float value )
	{
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#setDefault(String, int)
	 */
	public void setDefault( String name, int value )
	{
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#setDefault(String, long)
	 */
	public void setDefault( String name, long value )
	{
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#setDefault(String, String)
	 */
	public void setDefault( String name, String defaultObject )
	{
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#setDefault(String, boolean)
	 */
	public void setDefault( String name, boolean value )
	{
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#setToDefault(String)
	 */
	public void setToDefault( String name )
	{
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#setValue(String, double)
	 */
	public void setValue( String name, double value )
	{
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#setValue(String, float)
	 */
	public void setValue( String name, float value )
	{
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#setValue(String, int)
	 */
	public void setValue( String name, int newValue )
	{
		int oldValue = getInt( name );
		if ( oldValue != newValue )
		{
			fProperties.put( name, new Integer( newValue ) );
			setDirty( true );
			firePropertyChangeEvent( name, new Integer( oldValue ), new Integer( newValue ) );
		}
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#setValue(String, long)
	 */
	public void setValue( String name, long value )
	{
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#setValue(String, String)
	 */
	public void setValue( String name, String newValue )
	{
		Object oldValue = fProperties.get( name );
		if ( oldValue == null || !oldValue.equals( newValue ) )
		{
			fProperties.put( name, newValue );
			setDirty( true );
			firePropertyChangeEvent( name, oldValue, newValue );
		}
	}

	/* (non-Javadoc)
	 * @see org.eclipse.jface.preference.IPreferenceStore#setValue(String, boolean)
	 */
	public void setValue( String name, boolean newValue )
	{
		boolean oldValue = getBoolean( name );
		if ( oldValue != newValue )
		{
			fProperties.put( name, new Boolean( newValue ) );
			setDirty(true);
			firePropertyChangeEvent( name, new Boolean( oldValue ), new Boolean( newValue ) );
		}
	}

	protected void setDirty( boolean isDirty )
	{
		fIsDirty = isDirty;
	}
}