netsurf/javascript/jsapi/document.c

/*
 * Copyright 2012 Vincent Sanders <vince@netsurf-browser.org>
 *
 * This file is part of NetSurf, http://www.netsurf-browser.org/
 *
 * NetSurf is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * NetSurf is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */


/* IDL http://dvcs.w3.org/hg/domcore/raw-file/tip/Overview.html#interface-document

interface Document : Node {
  readonly attribute DOMImplementation implementation;
  readonly attribute DOMString URL;
  readonly attribute DOMString documentURI;
  readonly attribute DOMString compatMode;
  readonly attribute DOMString characterSet;
  readonly attribute DOMString contentType;

  readonly attribute DocumentType? doctype;
  readonly attribute Element? documentElement;
  HTMLCollection getElementsByTagName(DOMString localName);
  HTMLCollection getElementsByTagNameNS(DOMString? namespace, DOMString localName);
  HTMLCollection getElementsByClassName(DOMString classNames);
  Element? getElementById(DOMString elementId);

  Element createElement(DOMString localName);
  Element createElementNS(DOMString? namespace, DOMString qualifiedName);
  DocumentFragment createDocumentFragment();
  Text createTextNode(DOMString data);
  Comment createComment(DOMString data);
  ProcessingInstruction createProcessingInstruction(DOMString target, DOMString data);

  Node importNode(Node node, optional boolean deep = true);
  Node adoptNode(Node node);

  Event createEvent(DOMString interface);

  Range createRange();

  // NodeFilter.SHOW_ALL = 0xFFFFFFFF
  NodeIterator createNodeIterator(Node root, optional unsigned long whatToShow = 0xFFFFFFFF, optional NodeFilter? filter = null);
  TreeWalker createTreeWalker(Node root, optional unsigned long whatToShow = 0xFFFFFFFF, optional NodeFilter? filter = null);

  // NEW
  void prepend((Node or DOMString)... nodes);
  void append((Node or DOMString)... nodes);
};


 */

#include "jsclass.h"

#include "node.c"

static JSBool JSAPI_NATIVE(getElementById, JSContext *cx, uintN argc, jsval *vp)
{
	JSString* u16_txt;
	char *txt;
	unsigned long txtlen;
	dom_string *idstr;
	dom_element *idelement;
	struct jsclass_document_priv *document;

	document = JS_GetInstancePrivate(cx, JS_THIS_OBJECT(cx,vp), &JSCLASS_OBJECT, NULL);
	if (document == NULL) {
		return JS_FALSE;
	}

	if (document->node == NULL) {
		/* no document available, this is obviously a problem
		 * for finding elements 
		 */
		JSAPI_SET_RVAL(cx, vp, JSVAL_NULL);

		return JS_TRUE;
	}

	if (!JS_ConvertArguments(cx, argc, JSAPI_ARGV(cx, vp), "S", &u16_txt))
		return JS_FALSE;

	JSString_to_char(u16_txt, txt, txtlen);

	dom_string_create((unsigned char*)txt, txtlen, &idstr);

	dom_document_get_element_by_id(document->node, idstr, &idelement);

	JSAPI_SET_RVAL(cx, vp, OBJECT_TO_JSVAL(jsapi_new_element(cx, JS_GetGlobalObject(cx), document->htmlc, idelement)));

	return JS_TRUE;
}

#define JSAPI_FS_DOCUMENT \
	JSAPI_FS_NODE, \
	JSAPI_FS(getElementById, 1, 0) \


#define JSAPI_PS_DOCUMENT						\
	JSAPI_PS_NODE