netsurf/javascript/jsapi/window.bnd

/* Binding to generate window 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
 */


webidlfile "html.idl";
webidlfile "dom.idl";
webidlfile "console.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 "utils/corestrings.h"
#include "render/html_internal.h"
#include "javascript/jsapi.h"

#include "console.h"
#include "navigator.h"
#include "event.h"
#include "node.h"
#include "htmlcollection.h"
#include "nodelist.h"
#include "htmldocument.h"
#include "text.h"
#include "comment.h"
#include "htmlelement.h"
#include "window.h"
#include "location.h"

struct browser_window *jsapi_get_browser_window(JSContext *cx);

%}

prologue %{

struct browser_window *jsapi_get_browser_window(JSContext *cx)
{
	struct jsclass_private *private;

	private = JS_GetInstancePrivate(cx,
					JS_GetGlobalObject(cx),
					&JSClass_Window,
					NULL);
	if (private != NULL) {
		return private->bw;
	}

	return NULL;
}

static bool
init_user_prototypes(JSContext *cx,
		     struct jsclass_private *private,
		     JSObject *parent)
{
	/* Initialises all the user javascript classes to make their
	 * prototypes available.
	 */
	/** @todo should we be managing these prototype objects ourselves */
	private->prototype_Document = jsapi_InitClass_Document(cx, parent);
	if (private->prototype_Document == NULL) {
		return false;
	}

	private->prototype_Navigator = jsapi_InitClass_Navigator(cx, parent);
	if (private->prototype_Navigator == NULL) {
		return false;
	}

	private->prototype_Location = jsapi_InitClass_Location(cx, parent);
	if (private->prototype_Location == NULL) {
		return false;
	}

	private->prototype_Console = jsapi_InitClass_Console(cx, parent);
	if (private->prototype_Console == NULL) {
		return false;
	}

	private->prototype_HTMLElement = jsapi_InitClass_HTMLElement(cx, parent);
	if (private->prototype_HTMLElement == NULL) {
		return false;
	}

	private->prototype_HTMLCollection = jsapi_InitClass_HTMLCollection(cx, parent);
	if (private->prototype_HTMLCollection == NULL) {
		return false;
	}

	private->prototype_NodeList = jsapi_InitClass_NodeList(cx, parent);
	if (private->prototype_NodeList == NULL) {
		return false;
	}

	private->prototype_Text = jsapi_InitClass_Text(cx, parent);
	if (private->prototype_Text == NULL) {
		return false;
	}

	private->prototype_Comment = jsapi_InitClass_Comment(cx, parent);
	if (private->prototype_Comment == NULL) {
		return false;
	}

	private->prototype_Node = jsapi_InitClass_Node(cx, parent);
	if (private->prototype_Node == NULL) {
		return false;
	}

	private->prototype_Event = jsapi_InitClass_Event(cx, parent);
	if (private->prototype_Event == NULL) {
		return false;
	}
	return true;
}

%}

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

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

	private "struct browser_window *" bw;
	private "struct html_content *" htmlc;

	/* prototypes held in this object */
	internal "JSObject *" prototype_Document;
	internal "JSObject *" prototype_Navigator;
	internal "JSObject *" prototype_Location;
	internal "JSObject *" prototype_Console;
	internal "JSObject *" prototype_HTMLElement;
	internal "JSObject *" prototype_HTMLCollection;
	internal "JSObject *" prototype_NodeList;
	internal "JSObject *" prototype_Text;
	internal "JSObject *" prototype_Comment;
	internal "JSObject *" prototype_Node;
	internal "JSObject *" prototype_Event;

	/** document instantiated on first use */
	property unshared document;

	/** navigator instantiated on first use */
	property unshared navigator;

	/** console instantiated on first use */
	property unshared console;

        /** location is unshared */
	property unshared location;

	/** @todo instantiate forms, history etc. attributes */

	/* events through a single interface */
	property unshared type EventHandler;
}

api mark %{

	if (private != NULL) {
		if (private->prototype_Document != NULL) {
			JSAPI_GCMARK(private->prototype_Document);
		}

		if (private->prototype_Navigator != NULL) {
			JSAPI_GCMARK(private->prototype_Navigator);
		}

		if (private->prototype_Location != NULL) {
			JSAPI_GCMARK(private->prototype_Location);
		}

		if (private->prototype_Console != NULL) {
			JSAPI_GCMARK(private->prototype_Console);
		}

		if (private->prototype_HTMLElement != NULL) {
			JSAPI_GCMARK(private->prototype_HTMLElement);
		}

		if (private->prototype_HTMLCollection != NULL) {
			JSAPI_GCMARK(private->prototype_HTMLCollection);
		}

		if (private->prototype_NodeList != NULL) {
			JSAPI_GCMARK(private->prototype_NodeList);
		}

		if (private->prototype_Text != NULL) {
			JSAPI_GCMARK(private->prototype_Text);
		}

		if (private->prototype_Comment != NULL) {
			JSAPI_GCMARK(private->prototype_Comment);
		}

		if (private->prototype_Node != NULL) {
			JSAPI_GCMARK(private->prototype_Node);
		}

		if (private->prototype_Event != NULL) {
			JSAPI_GCMARK(private->prototype_Event);
		}
	}
%}

api global %{
%}

api init %{
	prototype = JS_NewCompartmentAndGlobalObject(cx, &JSClass_Window, NULL);
	if (prototype == NULL) {
		return NULL;
	}

	/** @todo reconsider global object handling. future
	 * editions of spidermonkey appear to be removing the
	 * idea of a global so we probably need to handle
	 * global object references internally
	 */

	/* set the contexts global */
	JS_SetGlobalObject(cx, prototype);

	/* Populate the global object with the standard globals, like
	 *  Object and Array.
	 */
	if (!JS_InitStandardClasses(cx, prototype)) {
		return NULL;
	}

	/* add functions to prototype */
	if (!JS_DefineFunctions(cx, prototype, jsclass_functions)) {
		return NULL;
	}

	/* add properties to prototype */
	if (!JS_DefineProperties(cx, prototype, jsclass_properties))
		return NULL;

	/* as the global just got changed, force a GC run */
	JS_GC(cx);
%}

api new %{
	/* @todo sort out windows that are not globals */
	assert(parent == NULL);

	/* the window object is the global so its prototype *is* the instance */
	newobject = prototype;

	if (init_user_prototypes(cx, private, prototype) == false) {
		/* prototype initialisation failed */
		free(private);
		return NULL;
	}

	LOG(("Created new window object %p", newobject));
%}

getter document %{
	if (!JSVAL_IS_VOID(JSAPI_PROP_RVAL(cx, vp))) {
		/* already created - return it */
		return JS_TRUE;
	}

	/* instantiate the subclasses off the window global */
	jsret = jsapi_new_Document(cx,
				   NULL,
				   NULL,
				   (dom_document *)dom_node_ref(private->htmlc->document),
				   private->htmlc);
%}

getter navigator %{
	if (!JSVAL_IS_VOID(JSAPI_PROP_RVAL(cx, vp))) {
		/* already created - return it */
		return JS_TRUE;
	}

	jsret = jsapi_new_Navigator(cx, NULL, NULL);
%}

getter console %{
	if (!JSVAL_IS_VOID(JSAPI_PROP_RVAL(cx, vp))) {
		/* already created - return it */
		return JS_TRUE;
	}

	jsret = jsapi_new_Console(cx, NULL, NULL);
%}

operation confirm %{
	warn_user(message, NULL);
%}

operation alert %{
	warn_user(message, NULL);
%}

operation prompt %{
	warn_user(message, NULL);
%}

/* boolean dispatchEvent(Event event); */
operation dispatchEvent %{
	/* this implementation is unique to the window object as it is
	 * not a "real" dom node.
	 */

	/* caution, this must match the struct generated from event.bnd */
	struct {
		dom_event *event;
	} *event_private;
	dom_string *type_dom = NULL;
	dom_exception exc;
	jsval eventval = JSVAL_VOID;
	jsval event_argv[1];
	jsval event_rval;

	event_private = JS_GetInstancePrivate(cx, event, &JSClass_Event, NULL);
	if (event_private->event == NULL) {
		/** @todo type error? */
		jsret = JS_FALSE;
	} else {
		exc = dom_event_get_type(event_private->event, &type_dom);
		if (exc == DOM_NO_ERR) {

			if (dom_string_isequal(type_dom, corestring_dom_load)) {
				JS_GetProperty(cx, JSAPI_THIS_OBJECT(cx, vp), "onload", &eventval);
			}

			if (!JSVAL_IS_VOID(eventval)) {
				event_argv[0] = eventval;
				jsret = JS_CallFunctionValue(cx, NULL, eventval, 1, event_argv, &event_rval);
			}
		}
	}
%}

getter location %{
	if (!JSVAL_IS_VOID(JSAPI_PROP_RVAL(cx, vp))) {
		/* already created - return it */
		return JS_TRUE;
	}

/* should get the docuemnts location
	jsval loc;
	JS_GetProperty(cx, private->document, "location", &loc);
	jsret = JSVAL_TO_OBJECT(loc);
*/

	jsret = jsapi_new_Location(cx,
				   NULL,
				   NULL,
				   llcache_handle_get_url(private->htmlc->base.llcache));
%}

getter window %{
	jsret = obj;
%}

getter self %{
	jsret = obj;
%}

/* very iffy implementation */
getter top %{
	jsret = obj;
%}

getter EventHandler %{
	/* this implementation is unique to the window object as it is
	 * not a dom node.
	 */
	JSLOG("propname[%d]=\"%s\"",
	      tinyid,
	      jsclass_properties[tinyid].name);
%}

setter EventHandler %{
	/* this implementation is unique to the window object as it is
	 * not a dom node.
	 */
	JSLOG("propname[%d]=\"%s\"",
	      tinyid,
	      jsclass_properties[tinyid].name);
%}