// Copyright (c) 2005-2009, Rodrigo Braz Monteiro, 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/

/// @file utils.h
/// @see utils.cpp
/// @ingroup utility
///

#pragma once

#include <libaegisub/fs_fwd.h>

#include <algorithm>
#include <cstdint>
#include <functional>
#include <utility>
#include <vector>

#include <wx/app.h>
#include <wx/icon.h>
#include <wx/event.h>
#include <wx/thread.h>

class wxMouseEvent;
class wxWindow;
namespace cmd { class Command; }

wxString PrettySize(int bytes);

std::string float_to_string(double val);

void StatusTimeout(wxString const& msg, int ms = 10000);

/// @brief Get the smallest power of two that is greater or equal to x
///
/// Algorithm from http://bob.allegronetwork.com/prog/tricks.html
int SmallestPowerOf2(int x);

/// Get the length in characters of the longest line in the given text
size_t MaxLineLength(std::string const& text, bool ignore_whitespace);

/// @brief Launch a new copy of Aegisub.
///
/// Contrary to what the name suggests, this does not close the currently
/// running process.
void RestartAegisub();

/// Add the OS X 10.7+ full-screen button to a window
void AddFullScreenButton(wxWindow *window);

void SetFloatOnParent(wxWindow *window);

void SetPlaceholderText(wxWindow *window, wxString const& placeholder);

/// Forward a mouse wheel event to the window under the mouse if needed
/// @param source The initial target of the wheel event
/// @param evt The event
/// @return Should the calling code process the event?
bool ForwardMouseWheelEvent(wxWindow *source, wxMouseEvent &evt);

/// Clean up the given cache directory, limiting the size to max_size
/// @param directory Directory to clean
/// @param file_type Wildcard pattern for files to clean up
/// @param max_size Maximum size of directory in MB
/// @param max_files Maximum number of files
void CleanCache(agi::fs::path const& directory, std::string const& file_type, uint64_t max_size, uint64_t max_files = -1);

/// @brief Templated abs() function
template <typename T> T tabs(T x) { return x < 0 ? -x : x; }

/// Get the middle value of a, b, and c (i.e. clamp b to [a,c])
/// @precondition a <= c
template<typename T> inline T mid(T a, T b, T c) { return std::max(a, std::min(b, c)); }

/// Get the text contents of the clipboard, or empty string on failure
std::string GetClipboard();
/// Try to set the clipboard to the given string
void SetClipboard(std::string const& new_value);
void SetClipboard(wxBitmap const& new_value);

#ifndef FORCEINLINE
#ifdef __VISUALC__
#define FORCEINLINE __forceinline
#else
#define FORCEINLINE inline
// __attribute__((always_inline)) gives me errors on g++ ~amz
#endif
#endif

#define countof(array) (sizeof(array) / sizeof(array[0]))

template<class Out>
struct cast {
	template<class In>
	Out operator()(In *in) const {
		return dynamic_cast<Out>(in);
	}

	template<class In>
	Out operator()(In &in) const {
		return dynamic_cast<Out>(&in);
	}
};

wxString FontFace(std::string opt_prefix);

agi::fs::path OpenFileSelector(wxString const& message, std::string const& option_name, std::string const& default_filename, std::string const& default_extension, wxString const& wildcard, wxWindow *parent);
agi::fs::path SaveFileSelector(wxString const& message, std::string const& option_name, std::string const& default_filename, std::string const& default_extension, wxString const& wildcard, wxWindow *parent);