File: nsIControllerCommandTable.idl

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/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsISupports.idl"
#include "nsIControllerCommand.idl"
#include "nsICommandParams.idl"

/**
 * nsIControllerCommandTable
 * 
 * An interface via which a controller can maintain a series of commands,
 * and efficiently dispatch commands to their respective handlers.
 *
 * Controllers that use an nsIControllerCommandTable should support
 * nsIInterfaceRequestor, and be able to return an interface to their
 * controller command table via getInterface().
 * 
 */

[scriptable, uuid(c847f90e-b8f3-49db-a4df-8867831f2800)]
interface nsIControllerCommandTable : nsISupports
{
  /**
   * Make this command table immutable, so that commands cannot
   * be registered or unregistered. Some command tables are made
   * mutable after command registration so that they can be 
   * used as singletons.
   */
  void  makeImmutable();
  
  /**
   * Register and unregister commands with the command table.
   *
   * @param aCommandName  the name of the command under which to register or
   *                      unregister the given command handler.
   *
   * @param aCommand      the handler for this command.
   */
  void    registerCommand(in string aCommandName, in nsIControllerCommand aCommand);
  void    unregisterCommand(in string aCommandName, in nsIControllerCommand aCommand);
  
  /**
   * Find the command handler which has been registered to handle the named command.
   *
   * @param aCommandName  the name of the command to find the handler for.
   */
  nsIControllerCommand findCommandHandler(in string aCommandName);

  /**
   * Get whether the named command is enabled.
   *
   * @param aCommandName    the name of the command to test
   * @param aCommandRefCon  the command context data
   */
	boolean isCommandEnabled(in string aCommandName, in nsISupports aCommandRefCon);

  /**
   * Tell the command to update its state (if it is a state updating command)
   *
   * @param aCommandName    the name of the command to update
   * @param aCommandRefCon  the command context data
   */
	void  updateCommandState(in string aCommandName, in nsISupports aCommandRefCon);

  /**
   * Get whether the named command is supported.
   *
   * @param aCommandName    the name of the command to test
   * @param aCommandRefCon  the command context data
   */
	boolean supportsCommand(in string aCommandName, in nsISupports aCommandRefCon);

  /**
   * Execute the named command.
   *
   * @param aCommandName    the name of the command to execute
   * @param aCommandRefCon  the command context data
   */
	void    doCommand(in string aCommandName, in nsISupports aCommandRefCon);

	void    doCommandParams(in string aCommandName, in nsICommandParams aParam, in nsISupports aCommandRefCon);

	void    getCommandState(in string aCommandName, in nsICommandParams aParam, in nsISupports aCommandRefCon);

  void getSupportedCommands(out unsigned long count,
                            [array, size_is(count), retval] out string commands);
};



%{C++
// {670ee5da-6ad5-11d7-9950-000393636592}
#define NS_CONTROLLERCOMMANDTABLE_CID \
  {0x670ee5da, 0x6ad5, 0x11d7, \
    { 0x99, 0x50, 0x00, 0x03, 0x93, 0x63, 0x65, 0x92 }}

#define NS_CONTROLLERCOMMANDTABLE_CONTRACTID \
 "@mozilla.org/embedcomp/controller-command-table;1"
%}