Aegisub/aegisub/src/auto4_base.h
2012-01-08 01:33:39 +00:00

321 lines
11 KiB
C++

// Copyright (c) 2006, Niels Martin Hansen
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// * Neither the name of the Aegisub Group nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// Aegisub Project http://www.aegisub.org/
//
// $Id$
/// @file auto4_base.h
/// @see auto4_base.cpp
/// @ingroup scripting
///
#pragma once
#ifndef AGI_PRE
#include <list>
#include <vector>
#include <wx/dialog.h>
#include <wx/filename.h>
#include <wx/gauge.h>
#include <wx/sizer.h>
#include <wx/stattext.h>
#include <wx/string.h>
#include <wx/textctrl.h>
#include <wx/timer.h>
#endif
#include <libaegisub/background_runner.h>
#include <libaegisub/exception.h>
#include <libaegisub/scoped_ptr.h>
#include <libaegisub/signal.h>
#include "ass_export_filter.h"
class AssFile;
class AssStyle;
class DialogProgress;
class SubtitleFormat;
class wxWindow;
class wxDialog;
class wxStopWatch;
class wxPathList;
namespace agi { struct Context; }
namespace cmd { class Command; }
/// DOCME
namespace Automation4 {
DEFINE_BASE_EXCEPTION_NOINNER(AutomationError, agi::Exception)
DEFINE_SIMPLE_EXCEPTION_NOINNER(ScriptLoadError, AutomationError, "automation/load/generic")
DEFINE_SIMPLE_EXCEPTION_NOINNER(MacroRunError, AutomationError, "automation/macro/generic")
// Calculate the extents of a text string given a style
bool CalculateTextExtents(AssStyle *style, wxString const& text, double &width, double &height, double &descent, double &extlead);
class ScriptDialog;
class ExportFilter : public AssExportFilter {
ScriptDialog *config_dialog;
/// subclasses should implement this, producing a new ScriptDialog
virtual ScriptDialog* GenerateConfigDialog(wxWindow *parent, agi::Context *c) = 0;
protected:
wxString GetScriptSettingsIdentifier();
public:
ExportFilter(wxString const& name, wxString const& description, int priority);
virtual ~ExportFilter();
wxWindow* GetConfigDialogWindow(wxWindow *parent, agi::Context *c);
void LoadSettings(bool is_default, agi::Context *c);
// Subclasses must implement ProcessSubs from AssExportFilter
};
/// A "dialog" which actually generates a non-top-level window that is then
/// either inserted into a dialog or into the export filter configuration
/// panel
class ScriptDialog {
public:
virtual ~ScriptDialog() { }
/// Create a window with the given parent
virtual wxWindow *CreateWindow(wxWindow *parent) = 0;
/// Read the values of the controls in this dialog and cache them in
/// some way so that they can be accessed from a background thread
virtual void ReadBack() = 0;
/// Serialize the values of the controls in this dialog to a string
/// suitable for storage in the subtitle script
virtual wxString Serialise() { return ""; }
/// Restore the values of the controls in this dialog from a string
/// stored in the subtitle script
virtual void Unserialise(wxString const& serialised) { }
};
class ProgressSink;
class BackgroundScriptRunner {
agi::scoped_ptr<DialogProgress> impl;
void OnDialog(wxThreadEvent &evt);
public:
void QueueEvent(wxEvent *evt);
void Run(std::tr1::function<void(ProgressSink*)> task);
BackgroundScriptRunner(wxWindow *parent, wxString const& title);
~BackgroundScriptRunner();
};
/// A wrapper around agi::ProgressSink which adds the ability to open
/// dialogs on the GUI thread
class ProgressSink : public agi::ProgressSink {
agi::ProgressSink *impl;
BackgroundScriptRunner *bsr;
int trace_level;
public:
void SetIndeterminate() { impl->SetIndeterminate(); }
void SetTitle(std::string const& title) { impl->SetTitle(title); }
void SetMessage(std::string const& msg) { impl->SetMessage(msg); }
void SetProgress(int cur, int max) { impl->SetProgress(cur, max); }
void Log(std::string const& str) { impl->Log(str); }
bool IsCancelled() { return impl->IsCancelled(); }
/// Show the passed dialog on the GUI thread, blocking the calling
/// thread until it closes
void ShowDialog(ScriptDialog *config_dialog);
/// Get the current automation trace level
int GetTraceLevel() const { return trace_level; }
ProgressSink(agi::ProgressSink *impl, BackgroundScriptRunner *bsr);
};
class Script {
wxString filename;
protected:
/// The automation include path, consisting of the user-specified paths
/// along with the script's path
wxPathList include_path;
Script(wxString const& filename);
public:
virtual ~Script() { }
/// Reload this script
virtual void Reload() = 0;
/// The script's file name with path
wxString GetFilename() const { return filename; }
/// The script's file name without path
wxString GetPrettyFilename() const { return wxFileName(filename).GetFullName(); }
/// The script's name. Not required to be unique.
virtual wxString GetName() const=0;
/// A short description of the script
virtual wxString GetDescription() const=0;
/// The author of the script
virtual wxString GetAuthor() const=0;
/// A version string that should not be used for anything but display
virtual wxString GetVersion() const=0;
/// Did the script load correctly?
virtual bool GetLoadedState() const=0;
/// Get a list of commands provided by this script
virtual std::vector<cmd::Command*> GetMacros() const=0;
/// Get a list of export filters provided by this script
virtual std::vector<ExportFilter*> GetFilters() const=0;
/// Get a list of subtitle formats provided by this script
virtual std::vector<SubtitleFormat*> GetFormats() const=0;
};
/// A manager of loaded automation scripts
class ScriptManager {
protected:
std::vector<Script*> scripts;
std::vector<cmd::Command*> macros;
agi::signal::Signal<> ScriptsChanged;
public:
/// Deletes all scripts managed
virtual ~ScriptManager();
/// Add a script to the manager. The ScriptManager takes ownership of the script and will automatically delete it.
void Add(Script *script);
/// Remove a script from the manager, and delete the Script object.
void Remove(Script *script);
/// Deletes all scripts managed
void RemoveAll();
/// Reload all scripts mananaged
virtual void Reload() = 0;
/// Reload a single managed script
virtual void Reload(Script *script);
/// Get all managed scripts (both loaded and invalid)
const std::vector<Script*>& GetScripts() const { return scripts; }
const std::vector<cmd::Command*>& GetMacros();
// No need to have getters for the other kinds of features, I think.
// They automatically register themselves in the relevant places.
DEFINE_SIGNAL_ADDERS(ScriptsChanged, AddScriptChangeListener)
};
/// Manager for scripts specified by a subtitle file
class LocalScriptManager : public ScriptManager {
std::list<agi::signal::Connection> slots;
agi::Context *context;
void OnSubtitlesSave();
public:
LocalScriptManager(agi::Context *context);
void Reload();
};
/// Manager for scripts in the autoload directory
class AutoloadScriptManager : public ScriptManager {
wxString path;
public:
AutoloadScriptManager(wxString const& path);
void Reload();
};
/// Both a base class for script factories and a manager of registered
/// script factories
class ScriptFactory {
/// Vector of loaded script engines
static std::vector<ScriptFactory*> *factories;
wxString engine_name;
wxString filename_pattern;
/// Load a file, or return NULL if the file is not in a supported
/// format. If the file is in a supported format but is invalid, a
/// script should be returned which returns false from IsLoaded and
/// an appropriate error message from GetDescription.
///
/// This is private as it should only ever be called through
/// CreateFromFile
virtual Script* Produce(wxString const& filename) const = 0;
protected:
ScriptFactory(wxString engine_name, wxString filename_pattern);
virtual ~ScriptFactory() { }
public:
/// Name of this automation engine
const wxString& GetEngineName() const { return engine_name; }
/// Extension which this engine supports
const wxString& GetFilenamePattern() const { return filename_pattern; }
/// Register an automation engine. Calling code retains ownership of pointer
static void Register(ScriptFactory *factory);
/// Unregister and delete an automation engine
static void Unregister(ScriptFactory *factory);
/// Is there an automation engine registered which can open the file?
static bool CanHandleScriptFormat(wxString const& filename);
/// Get the full wildcard string for all loaded engines
static wxString GetWildcardStr();
/// Load a script from a file
/// @param filename Script to load
/// @param log_errors Should load errors be displayed?
/// @return Always returns a valid Script, even if no engine could load the file
static Script* CreateFromFile(wxString const& filename, bool log_errors);
static const std::vector<ScriptFactory*>& GetFactories();
};
/// A script which represents a file not recognized by any registered
/// automation engines
class UnknownScript : public Script {
public:
UnknownScript(wxString const& filename);
void Reload() { }
wxString GetName() const { return wxFileName(GetFilename()).GetName(); }
wxString GetDescription() const { return _("File was not recognized as a script"); }
wxString GetAuthor() const { return ""; }
wxString GetVersion() const { return ""; }
bool GetLoadedState() const { return false; }
std::vector<cmd::Command*> GetMacros() const { return std::vector<cmd::Command*>(); }
std::vector<ExportFilter*> GetFilters() const { return std::vector<ExportFilter*>(); }
std::vector<SubtitleFormat*> GetFormats() const { return std::vector<SubtitleFormat*>(); }
};
}