RmlUi/Source/Core/TemplateCache.h

/*
 * This source file is part of RmlUi, the HTML/CSS Interface Middleware
 *
 * For the latest information, see http://github.com/mikke89/RmlUi
 *
 * Copyright (c) 2008-2010 CodePoint Ltd, Shift Technology Ltd
 * Copyright (c) 2019-2023 The RmlUi Team, and contributors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 */

#ifndef RMLUI_CORE_TEMPLATECACHE_H
#define RMLUI_CORE_TEMPLATECACHE_H

#include "../../Include/RmlUi/Core/Types.h"

namespace Rml {

class Template;

/**
    Manages requests for loading templates, caching as it goes.

    @author Lloyd Weehuizen
 */

class TemplateCache {
public:
	/// Initialisation and Shutdown
	static bool Initialise();
	static void Shutdown();

	/// Load the named template from the given path, if its already loaded get the cached copy
	static Template* LoadTemplate(const String& path);
	/// Get the template by id
	static Template* GetTemplate(const String& id);

	/// Clear the template cache.
	static void Clear();

private:
	TemplateCache();
	~TemplateCache();

	using Templates = UnorderedMap<String, Template*>;
	Templates templates;
	Templates template_ids;
};

} // namespace Rml
#endif