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audacity/src/commands/CommandHandler.cpp

67 lines
1.7 KiB
C++

/**********************************************************************
Audacity - A Digital Audio Editor
Copyright 1999-2009 Audacity Team
File License: wxWidgets
Dan Horgan
******************************************************************//**
\file CommandHandler.cpp
\brief Contains definitions for the CommandHandler class.
\class CommandHandler
\brief Contains methods for applying commands that are passed to it.
*//*******************************************************************/
#include <wx/event.h>
#include "CommandHandler.h"
#include "../Project.h"
#include "Command.h"
#include "AppCommandEvent.h"
#include "ScriptCommandRelay.h"
CommandHandler::CommandHandler(AudacityApp &app)
: mCurrentContext(new CommandExecutionContext(&app, GetActiveProject()))
{ }
CommandHandler::~CommandHandler()
{
delete mCurrentContext;
}
void CommandHandler::SetProject(AudacityProject *proj)
{
mCurrentContext->proj = proj;
}
void CommandHandler::OnReceiveCommand(AppCommandEvent &event)
{
// First retrieve the actual command from the event 'envelope'.
Command *cmd = event.GetCommand();
// Then apply it to current application & project. Note that the
// command may change the context - for example, switching to a
// different project.
cmd->Apply(*mCurrentContext);
// Done with the command so delete it.
delete cmd;
// Redraw the project
mCurrentContext->proj->RedrawProject();
}
// Indentation settings for Vim and Emacs and unique identifier for Arch, a
// version control system. Please do not modify past this point.
//
// Local Variables:
// c-basic-offset: 3
// indent-tabs-mode: nil
// End:
//
// vim: et sts=3 sw=3
// arch-tag: TBD