RmlUi/Source/Core/XMLNodeHandlerDefault.cpp

/*
 * 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 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.
 *
 */

#include "XMLNodeHandlerDefault.h"
#include "XMLParseTools.h"
#include "../../Include/RmlUi/Core/Log.h"
#include "../../Include/RmlUi/Core/Element.h"
#include "../../Include/RmlUi/Core/Factory.h"
#include "../../Include/RmlUi/Core/Profiling.h"
#include "../../Include/RmlUi/Core/XMLParser.h"


namespace Rml {
namespace Core {

XMLNodeHandlerDefault::XMLNodeHandlerDefault()
{
}

XMLNodeHandlerDefault::~XMLNodeHandlerDefault()
{
}

Element* XMLNodeHandlerDefault::ElementStart(XMLParser* parser, const String& name, const XMLAttributes& attributes)
{	
	RMLUI_ZoneScopedC(0x556B2F);

	// Determine the parent
	Element* parent = parser->GetParseFrame()->element;

	// Attempt to instance the element with the instancer
	ElementPtr element = Factory::InstanceElement(parent, name, name, attributes);
	if (!element)
	{
		Log::Message(Log::LT_ERROR, "Failed to create element for tag %s, instancer returned nullptr.", name.c_str());
		return nullptr;
	}

	// Move and append the element to the parent
	Element* result = parent->AppendChild(std::move(element));

	if (result->GetDataModel() && attributes.count("data-for") == 1)
	{
		parser->TreatElementContentAsCDATA();
	}

	return result;
}

bool XMLNodeHandlerDefault::ElementEnd(XMLParser* RMLUI_UNUSED_PARAMETER(parser), const String& RMLUI_UNUSED_PARAMETER(name))
{
	RMLUI_UNUSED(parser);
	RMLUI_UNUSED(name);

	return true;
}

bool XMLNodeHandlerDefault::ElementData(XMLParser* parser, const String& data)
{
	RMLUI_ZoneScopedC(0x006400);

	// Determine the parent
	Element* parent = parser->GetParseFrame()->element;
	
	RMLUI_ASSERT(parent);

	// TODO: Move somewhere else. Perhaps spawn a sub-element, or set an attribute with the rml contents.
	if (auto data_model = parent->GetDataModel())
	{
		if(auto attribute = parent->GetAttribute("data-for"))
		{
			String value_bind_name = attribute->Get<String>();

			auto view = std::make_unique<DataViewFor>(*data_model, parent, value_bind_name, data);
			if (*view)
				data_model->AddView(std::move(view));
			else
				Log::Message(Log::LT_WARNING, "Could not add data-for view to element '%s'.", parent->GetAddress().c_str());

			return true;
		}
	}


	// Parse the text into the element
	return Factory::InstanceElementText(parent, data);
}


}
}