/* Binding to generate HTMLElement interface
 *
 * Copyright 2012 Vincent Sanders <vince@netsurf-browser.org>
 *
 * This file is part of NetSurf, http://www.netsurf-browser.org/
 *
 * Released under the terms of the MIT License,
 *         http://www.opensource.org/licenses/mit-license
 */

#include "dom.bnd"

webidlfile "html.idl";

hdrcomment "Copyright 2012 Vincent Sanders <vince@netsurf-browser.org>";
hdrcomment "This file is part of NetSurf, http://www.netsurf-browser.org/";
hdrcomment "Released under the terms of the MIT License,";
hdrcomment "        http://www.opensource.org/licenses/mit-license";

preamble %{

#include <dom/dom.h>

#include "utils/config.h"
#include "utils/log.h"

#include "javascript/jsapi.h"
#include "javascript/jsapi/binding.h"

%}

binding htmlelement {
    type js_libdom; /* the binding type */

    interface HTMLElement; /* Web IDL interface to generate */

    private "dom_element *" node;
    private "struct html_content *" htmlc;
}

api finalise %{
	if (private != NULL) {
		dom_node_unref(private->node);
	}
%}

/* interface Element in dom idl */

/*
 * DOM 3 has these as the element traversal  extension
 *
 * http://dev.w3.org/2006/webapi/ElementTraversal/publish/ElementTraversal.html
 */

getter firstElementChild %{
	dom_node *element;
	dom_exception exc;
	dom_node_type node_type;
	dom_node *next_node;

	exc = dom_node_get_first_child(private->node, &element);
	if (exc != DOM_NO_ERR) {
		return JS_FALSE;
	}

	while (element != NULL) {
		exc = dom_node_get_node_type(element, &node_type);
		if ((exc == DOM_NO_ERR) && (node_type == DOM_ELEMENT_NODE)) {
			/* found it */
			jsret = jsapi_new_HTMLElement(cx,
						      NULL,
						      NULL,
						      (dom_element *)element,
						      private->htmlc);
			break;
		}

		exc = dom_node_get_next_sibling(element, &next_node);
		dom_node_unref(element);
		if (exc == DOM_NO_ERR) {
			element = next_node;
		} else {
			element = NULL;
		}

	}


	%}

getter lastElementChild %{
	dom_node *element;
	dom_exception exc;
	dom_node_type node_type;
	dom_node *sib_node;

	exc = dom_node_get_last_child(private->node, &element);
	if (exc != DOM_NO_ERR) {
		return JS_FALSE;
	}

	while (element != NULL) {
		exc = dom_node_get_node_type(element, &node_type);
		if ((exc == DOM_NO_ERR) && (node_type == DOM_ELEMENT_NODE)) {
			/* found it */
			jsret = jsapi_new_HTMLElement(cx,
						      NULL,
						      NULL,
						      (dom_element *)element,
						      private->htmlc);
			break;
		}

		exc = dom_node_get_previous_sibling(element, &sib_node);
		dom_node_unref(element);
		if (exc == DOM_NO_ERR) {
			element = sib_node;
		} else {
			element = NULL;
		}

	}
	%}

getter previousElementSibling %{
	dom_node *element;
	dom_exception exc;
	dom_node_type node_type;
	dom_node *sib_node;

	exc = dom_node_get_previous_sibling(private->node, &element);
	if (exc != DOM_NO_ERR) {
		return JS_FALSE;
	}

	while (element != NULL) {
		exc = dom_node_get_node_type(element, &node_type);
		if ((exc == DOM_NO_ERR) && (node_type == DOM_ELEMENT_NODE)) {
			/* found it */
			jsret = jsapi_new_HTMLElement(cx,
						      NULL,
						      NULL,
						      (dom_element *)element,
						      private->htmlc);
			break;
		}

		exc = dom_node_get_previous_sibling(element, &sib_node);
		dom_node_unref(element);
		if (exc == DOM_NO_ERR) {
			element = sib_node;
		} else {
			element = NULL;
		}
	}
%}

getter nextElementSibling %{
	dom_node *element;
	dom_exception exc;
	dom_node_type node_type;
	dom_node *sib_node;

	exc = dom_node_get_next_sibling(private->node, &element);
	if (exc != DOM_NO_ERR) {
		return JS_FALSE;
	}

	while (element != NULL) {
		exc = dom_node_get_node_type(element, &node_type);
		if ((exc == DOM_NO_ERR) && (node_type == DOM_ELEMENT_NODE)) {
			/* found it */
			jsret = jsapi_new_HTMLElement(cx,
						      NULL,
						      NULL,
						      (dom_element *)element,
						      private->htmlc);
			break;
		}

		exc = dom_node_get_next_sibling(element, &sib_node);
		dom_node_unref(element);
		if (exc == DOM_NO_ERR) {
			element = sib_node;
		} else {
			element = NULL;
		}
	}
%}

getter childElementCount %{
	dom_node *element;
	dom_exception exc;
	dom_node_type node_type;
	dom_node *next_node;

	exc = dom_node_get_first_child(private->node, &element);
	if (exc != DOM_NO_ERR) {
		return JS_FALSE;
	}

	while (element != NULL) {
		exc = dom_node_get_node_type(element, &node_type);
		if ((exc == DOM_NO_ERR) && (node_type == DOM_ELEMENT_NODE)) {
			jsret += 1;
		}

		exc = dom_node_get_next_sibling(element, &next_node);
		dom_node_unref(element);
		if (exc == DOM_NO_ERR) {
			element = next_node;
		} else {
			element = NULL;
		}
	}
%}