/*
 * bonobo-property.idl: The Bonobo Property interfaces.
 *
 * Authors:
 *   Nat Friedman   (nat@nat.org)
 *   Michael Meeks  (michael@ximian.com)
 *   Dietmar Maurer (dietmar@ximian.com)
 *   Mike Kestner   (mkestner@ameritech.net)
 *
 * Copyright 1999, 2000, 2001 Ximian, Inc.
 * Copyright 2000, Mike Kestner
 */

 /*
  * Each PropertyBag is aggregated with an EventSource, so that it is
  * possible to attach event listeners. The event name is composed
  * of "Bonobo/Property", the type of the event and finally the property
  * name - everything separated by colons. At the moment there is only one 
  * type defined - "change". So if a property with name "autosave" changes
  * its value, we emit an event with the name: 
  * "Bonobo/Property:change:autosave"
  */

#ifndef BONOBO_PROPERTY_IDL
#define BONOBO_PROPERTY_IDL

#include "Bonobo_Unknown.idl"
#include "Bonobo_Listener.idl"

module Bonobo {

struct Pair {
	string name;
	any    value;
};

typedef sequence<Pair> PropertySet;

typedef sequence<string> KeyList;

typedef long PropertyFlags;
const PropertyFlags PROPERTY_READABLE        = 1;
const PropertyFlags PROPERTY_WRITEABLE       = 2;
const PropertyFlags PROPERTY_NO_LISTENING    = 4;
const PropertyFlags PROPERTY_NO_AUTONOTIFY   = 8;
const PropertyFlags PROPERTY_NO_PERSIST      = 16;

interface PropertyBag : Bonobo::Unknown {

	exception NotFound {};
	exception InvalidType {};
	exception _ReadOnly {};
	exception BackendFailed {};

	/**
	 * getKeys:
	 *
	 * Returns: A list of keys matching @filter.
	 */
	KeyList         getKeys    (in string filter)
		raises (NotFound, BackendFailed);
 
	/**
	 * getType:
	 * 
	 * Returns: The type of property @key.
	 */
#ifdef __ORBIT_IDL__
	TypeCode        getType     (in string key)
#else
	CORBA::TypeCode getType     (in string key)
#endif
		raises (NotFound, BackendFailed);


	/**
	 * getValue:
	 *
	 * Returns: The current value for property @key.
	 */
	any             getValue    (in string key)
		raises (NotFound, BackendFailed);

	/**
	 * setValue:
	 * 
	 * Sets the value for property @key to @value
	 */
	void            setValue    (in string key, in any value)
		raises (NotFound, InvalidType, ReadOnly, BackendFailed);
  

	/**
	 * getValue:
	 *
	 * Returns: A list of properties matching @filter.
	 */
	PropertySet     getValues   (in string filter)
 		raises (NotFound, BackendFailed);
	
	/**
	 * setValue:
	 * 
	 * Sets the values contained in @set. 
	 */
	void            setValues   (in PropertySet set)
		raises (InvalidType, ReadOnly, BackendFailed);
	
	/**
	 * getDefault:
	 *
	 * Returns: The default value for property @key.
	 *
	 * Property editors can use it to implement a "set property value to
	 * default" mechanism.
	 *
	 */
	any             getDefault  (in string key)
		raises (NotFound, BackendFailed);
                
	/**
	 * getDocTitle:
	 *
	 * Returns: A short string describing property @key.
	 */	
	string          getDocTitle (in string key)
		raises (NotFound, BackendFailed);
                
	/**
	 * getDoc:
	 *
	 * Returns: A verbose documentation describing property @key.
	 */	
	string          getDoc      (in string key)
		raises (NotFound, BackendFailed);

	/** 
	 * getFlags:
	 * 
	 * Returns:
	 */
	PropertyFlags   getFlags    (in string key)
		raises (NotFound, BackendFailed);

	void unImplemented1 ();
	void unImplemented2 ();
	void unImplemented3 ();
	void unImplemented4 ();
};

interface ConfigDatabase : PropertyBag {

	enum DBFlags {
		_DEFAULT,
		WRITE,
		MANDATORY
	};

	/** 
	 * isWriteable:
	 * 
	 * indicates whether the database is writeable or not
	 */
	readonly attribute boolean isWriteable;
	
	/** 
	 * getDirs:
	 * 
	 * Returns: A list of directory names.
	 */
	KeyList         getDirs     (in string dir)
		raises (NotFound, BackendFailed);

	/** 
	 * hasDir:
	 * 
	 * Returns: TRUE if @dir exists. 
	 */
	boolean         hasDir      (in string dir)
		raises (BackendFailed);
		
	/** 
	 * removeValue:
	 * 
	 * Remove a value from the database.
	 */
	void            removeValue (in string key)
		raises (BackendFailed);

	/** 
	 * removeDir:
	 * 
	 * Removes all values contained in directory.
	 */
	void            removeDir   (in string dir)
		raises (BackendFailed);

	/** 
	 * addDatabase:
	 * 
	 * The added database will be used to lookup default values.
	 */
	void            addDatabase (in ConfigDatabase db, in string key, 
				     in DBFlags flags)
		raises (BackendFailed);

	/** 
	 * sync:
	 * 
	 * Flush all buffers 
	 */
	void            sync        ()
		raises (BackendFailed);

	void unImplemented5 ();
	void unImplemented6 ();
	void unImplemented7 ();
	void unImplemented8 ();
};

};

#endif /* BONOBO_PROPERTY_IDL */
