// Copyright (c) 2007, 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.
//
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// Aegisub Project http://www.aegisub.org/
//
// $Id$

/// @file tooltip_manager.cpp
/// @brief Generate tooltips for controls by combining a base text and any hotkeys found for the function
/// @ingroup custom_control
///

#include "config.h"

#include "tooltip_manager.h"

#include "include/aegisub/hotkey.h"

#include <libaegisub/hotkey.h>

#ifndef AGI_PRE
#include <wx/window.h>
#endif

#include <wx/weakref.h>

struct ToolTipBinding {
	wxWeakRef<wxWindow> window;
	wxString toolTip;
	const char *command;
	const char *context;
	void Update();

	ToolTipBinding(wxWindow *window, wxString toolTip, const char *command, const char *context)
	: window(window)
	, toolTip(toolTip)
	, command(command)
	, context(context)
	{
	}

	// clang doesn't like wxWeakRef's copy constructor, so use the assignment
	// operator instead
	ToolTipBinding(ToolTipBinding const& other)
	: toolTip(other.toolTip)
	, command(other.command)
	, context(other.context)
	{
		window = other.window;
	}
};

ToolTipManager::ToolTipManager() { }
ToolTipManager::~ToolTipManager() { }

void ToolTipManager::Bind(wxWindow *window, wxString tooltip, const char *context, const char *command) {
	ToolTipBinding tip(window, tooltip, command, context);
	tip.Update();

	static ToolTipManager instance;
	instance.tips.push_back(tip);
	hotkey::inst->AddHotkeyChangeListener(&ToolTipBinding::Update, &instance.tips.back());
}

void ToolTipBinding::Update() {
	if (!window.get()) return;

	std::vector<std::string> hotkeys = hotkey::get_hotkey_strs(context, command);

	std::string str;
	for (size_t i = 0; i < hotkeys.size(); ++i) {
		if (i > 0) str += "/";
		str += hotkeys[i];
	}
	if (str.empty()) {
		window->SetToolTip(toolTip);
	}
	else {
		window->SetToolTip(toolTip + " (" + str + ")");
	}
}
