62 lines
1.7 KiB
C++
62 lines
1.7 KiB
C++
/**********************************************************************
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Audacity - A Digital Audio Editor
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Copyright 1999-2009 Audacity Team
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File License: wxWidgets
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Dan Horgan
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******************************************************************//**
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\file CommandHandler.cpp
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\brief Contains definitions for the CommandHandler class.
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\class CommandHandler
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\brief Contains methods for applying commands that are passed to it.
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*//*******************************************************************/
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#include <wx/event.h>
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#include "CommandHandler.h"
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#include "../Project.h"
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#include "Command.h"
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#include "AppCommandEvent.h"
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#include "ScriptCommandRelay.h"
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CommandHandler::CommandHandler(AudacityApp &app)
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: mCurrentContext(new CommandExecutionContext(&app, GetActiveProject()))
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{ }
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CommandHandler::~CommandHandler()
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{
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delete mCurrentContext;
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}
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void CommandHandler::SetProject(AudacityProject *)
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{
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// TODO: Review if the extend command handling is ever utilized
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// mCurrentContext->proj = proj;
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}
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void CommandHandler::OnReceiveCommand(AppCommandEvent &event)
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{
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// First retrieve the actual command from the event 'envelope'.
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Command *cmd = event.GetCommand();
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// JKC: In case the user changed the project, let us track that.
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// This saves us the embarrassment (crash) of a NEW project
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// being opened, the old one closed and still trying to act
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// on the old one.
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SetProject( GetActiveProject() );
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// Then apply it to current application & project. Note that the
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// command may change the context - for example, switching to a
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// different project.
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cmd->Apply(*mCurrentContext);
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// Done with the command so DELETE it.
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delete cmd;
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// Redraw the project
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mCurrentContext->GetProject()->RedrawProject();
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}
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