C++ CL_DomNode::is_element方法代码示例

CL_DomElement CL_DomElement::get_next_sibling_element() const
{
	CL_DomNode node = get_next_sibling();
	while (!node.is_null() && !node.is_element())
		node = node.get_next_sibling();
	return node.to_element();
}

CL_String CL_DomNode::select_string(const CL_DomString &xpath_expression) const
{
	CL_DomNode node = select_node(xpath_expression);
	if (node.is_element())
		return node.to_element().get_text();
	else
		return node.get_node_value();
}

CL_DomElement CL_DomDocument::get_document_element()
{
	CL_DomNode cur = get_first_child();
	while (!cur.is_null())
	{
		if (cur.is_element())
			return cur.to_element();
		cur = cur.get_next_sibling();
	}
	return CL_DomElement();
}

CL_String CL_DomElement::get_text() const
{
	CL_String str;
	if (has_child_nodes() == false)
		return str;

	CL_DomNode cur = get_first_child();
	while (!cur.is_null())
	{
		if (cur.is_text() || cur.is_cdata_section())
			str.append(cur.get_node_value());
		if (cur.is_element())
			str.append(cur.to_element().get_text());
		cur = cur.get_next_sibling();
	}
	return str;
}

void CL_GUIComponent::load_css_layout(const CL_String &xml_filename, const CL_String &css_filename)
{
	CL_CSSDocument2 css_document;
	css_document.add_sheet(css_filename);

	CL_File file(xml_filename);
	CL_DomDocument dom(file, false);
	CL_DomNode cur = dom.get_document_element().get_first_child();
	std::vector<CL_CSSLayoutElement> element_stack;

	{
		CL_DomSelectNode select_node(dom.get_document_element());
		impl->css_element.apply_properties(css_document.select(&select_node));
		impl->css_element.apply_properties(dom.get_document_element().get_attribute("style"));
		impl->css_element.set_col_span(dom.get_document_element().get_attribute_int("colspan", 1));
		impl->css_element.set_row_span(dom.get_document_element().get_attribute_int("rowspan", 1));
	}

	element_stack.push_back(impl->css_element);
	while (!cur.is_null())
	{
		CL_CSSLayoutElement child_css_element;
		if (cur.is_element())
		{
			CL_DomElement cur_element = cur.to_element();
			CL_DomSelectNode select_node(cur_element);
			child_css_element = element_stack.back().create_element(cur_element.get_tag_name());
			child_css_element.apply_properties(css_document.select(&select_node));
			child_css_element.apply_properties(cur_element.get_attribute("style"));
			child_css_element.set_col_span(cur_element.get_attribute_int("colspan", 1));
			child_css_element.set_row_span(cur_element.get_attribute_int("rowspan", 1));
		}
		else if (cur.is_text())
		{
			CL_DomText cur_text = cur.to_text();
			element_stack.back().create_text(cur_text.get_node_value());
		}

		CL_DomNode next = cur.get_first_child();
		if (next.is_null())
		{
			next = cur.get_next_sibling();
			if (next.is_null())
			{
				next = cur.get_parent_node();
				while (!next.is_null() && next.get_next_sibling().is_null())
					next = next.get_parent_node();
				if (!next.is_null())
					next = next.get_next_sibling();
			}
		}
		else
		{
			element_stack.push_back(child_css_element);
		}
		cur = next;
	}

	CL_GraphicContext gc = get_gc();
	impl->css_layout.layout(gc, get_size());
}

CL_Resource CL_ResourceManager::create_resource(const CL_String &resource_id, const CL_String &type)
{
	if (resource_exists(resource_id))
		throw CL_Exception(cl_format("Resource %1 already exists", resource_id));

	std::vector<CL_String> path_elements = CL_PathHelp::split_basepath(resource_id);
	CL_String name = CL_PathHelp::get_filename(resource_id);

	// Walk tree as deep as we can get:
	CL_DomNode parent = impl->document.get_document_element();
	CL_DomNode cur = parent.get_first_child();
	std::vector<CL_String>::iterator path_it = path_elements.begin();
	while (!cur.is_null() && path_it != path_elements.end())
	{
		if (cur.is_element() &&
			cur.get_namespace_uri() == impl->ns_resources &&
			cur.get_local_name() == "section")
		{
			CL_DomElement element = cur.to_element();
			CL_String name = element.get_attribute_ns(impl->ns_resources, "name");
			if (name == *path_it)
			{
				++path_it;
				parent = cur;
				cur = cur.get_first_child();
				continue;
			}
		}
		cur = cur.get_next_sibling();
	}

	// Create any missing parent nodes:
	CL_String prefix = parent.get_prefix();
	while (path_it != path_elements.end())
	{
		CL_DomElement section;
		if (prefix.empty())
		{
			section = impl->document.create_element_ns( impl->ns_resources, (*path_it) );
		}
		else
		{
			section = impl->document.create_element_ns( impl->ns_resources,(prefix + ":" + *path_it));
		}
		parent.append_child(section);
		parent = section;
		++path_it;
	}

	// Create node:
	CL_DomElement resource_node;
	if (prefix.empty())
	{
		resource_node = impl->document.create_element_ns( impl->ns_resources, (type));
	}
	else
	{
		resource_node = impl->document.create_element_ns( impl->ns_resources,(prefix + ":" + type));
	}

	resource_node.set_attribute_ns(
		impl->ns_resources,
		prefix.empty() ? "name" : (prefix + ":name"),
		name);
	parent.append_child(resource_node);

	// Create resource:
	impl->resources[resource_id] = CL_Resource(resource_node, *this);
	return impl->resources[resource_id];
}

std::vector<CL_DomNode> CL_DomDocument::load(
	CL_IODevice &input,
	bool eat_whitespace,
	CL_DomNode insert_point)
{
	clear_all();

	CL_XMLTokenizer tokenizer(input);
	tokenizer.set_eat_whitespace(eat_whitespace);

	if (insert_point.is_element() == false)
		insert_point = *this;
		
	std::vector<CL_DomNode> node_stack;
	node_stack.push_back(insert_point);

	std::vector<CL_DomNode> result;
	
	try
	{
		CL_XMLToken cur_token;
		tokenizer.next(&cur_token);
		while (cur_token.type != CL_XMLToken::NULL_TOKEN)
		{
			switch (cur_token.type)
			{
			case CL_XMLToken::TEXT_TOKEN:
				node_stack.back().append_child(create_text_node(cur_token.value));
				if (node_stack.back() == insert_point)
					result.push_back(node_stack.back().get_last_child());
				break;

			case CL_XMLToken::CDATA_SECTION_TOKEN:
				node_stack.back().append_child(create_cdata_section(cur_token.value));
				if (node_stack.back() == insert_point)
					result.push_back(node_stack.back().get_last_child());
				break;

			case CL_XMLToken::ELEMENT_TOKEN:
				if (cur_token.variant != CL_XMLToken::END)
				{
					CL_DomString namespace_uri = CL_DomDocument_Generic::find_namespace_uri(cur_token.name, cur_token, node_stack.back());
					CL_DomElement element = create_element_ns(namespace_uri, cur_token.name);
					node_stack.back().append_child(element);
					if (node_stack.back() == insert_point)
						result.push_back(node_stack.back().get_last_child());

					int size = (int) cur_token.attributes.size();
					for (int i=0; i<size; i++)
					{
						CL_XMLToken::Attribute &attribute = cur_token.attributes[i];
						CL_DomString attribute_namespace_uri = CL_DomDocument_Generic::find_namespace_uri(attribute.first, cur_token, node_stack.back());
						element.set_attribute_ns(
							attribute_namespace_uri,
							attribute.first,
							attribute.second);
					}
				
					if (cur_token.variant == CL_XMLToken::BEGIN)
						node_stack.push_back(element);
				}
				else
				{
					node_stack.pop_back();
					if (node_stack.empty()) throw CL_Exception("Malformed XML tree!");
				}
				break;

			case CL_XMLToken::NULL_TOKEN: 
				break;

			case CL_XMLToken::ENTITY_REFERENCE_TOKEN: 
				break;

			case CL_XMLToken::ENTITY_TOKEN: 
				break;
			
			case CL_XMLToken::COMMENT_TOKEN:
				break;

			case CL_XMLToken::DOCUMENT_TYPE_TOKEN:
				break;

			case CL_XMLToken::NOTATION_TOKEN:
				break;

			case CL_XMLToken::PROCESSING_INSTRUCTION_TOKEN:
				break;
			}		

			tokenizer.next(&cur_token);
		}
	}
	catch (const CL_Exception& e)
	{
		for (std::vector<CL_DomNode>::size_type i = 0; i < result.size(); i++)
		{
			insert_point.remove_child(result[i]);
		}
		throw;
//.........这里部分代码省略.........

CL_DomNode CL_DomDocument::import_node(const CL_DomNode &node, bool deep)
{
	CL_DomNode imported_node;
	switch (node.get_node_type())
	{
	case NULL_NODE:
		return imported_node;
	case ELEMENT_NODE:
		imported_node = create_element_ns(node.get_namespace_uri(), node.get_node_name());
		break;
	case ATTRIBUTE_NODE:
		imported_node = create_attribute_ns(node.get_namespace_uri(), node.get_node_name());
		imported_node.set_node_value(node.get_node_value());
		break;
	case TEXT_NODE:
		imported_node = create_text_node(node.get_node_value());
		break;
	case CDATA_SECTION_NODE:
		imported_node = create_cdata_section(node.get_node_value());
		break;
	case ENTITY_REFERENCE_NODE:
		imported_node = create_entity_reference(node.get_node_name());
		break;
	case ENTITY_NODE:
		return imported_node;
	case PROCESSING_INSTRUCTION_NODE:
		imported_node = create_processing_instruction(node.to_processing_instruction().get_target(), node.to_processing_instruction().get_data());
		break;
	case COMMENT_NODE:
		imported_node = create_comment(node.get_node_value());
		break;
	case DOCUMENT_NODE:
		imported_node = create_document_fragment();
		break;
	case DOCUMENT_TYPE_NODE:
		return imported_node;
	case DOCUMENT_FRAGMENT_NODE:
		imported_node = create_document_fragment();
		break;
	case NOTATION_NODE:
		return imported_node;
	}

	if (node.is_element())
	{
		CL_DomElement import_element = imported_node.to_element();
		CL_DomNamedNodeMap node_attributes = node.get_attributes();
		int size = node_attributes.get_length();
		for (int index = 0; index < size; index++)
		{
			CL_DomNode attr = node_attributes.item(index);
			import_element.set_attribute_node_ns(import_node(attr, deep).to_attr());
		}
	}

	if (deep)
	{
		CL_DomNode cur = node.get_first_child();
		while (!cur.is_null())
		{
			imported_node.append_child(import_node(cur, true));
			cur = cur.get_next_sibling();
		}
	}

	return imported_node;
}