From 135aae3921322afc7241185080e0dfc8a2de4fd4 Mon Sep 17 00:00:00 2001
From: Vincent Sanders <vince@netsurf-browser.org>
Date: Sun, 5 Aug 2012 23:42:30 +0100
Subject: [PATCH] add element object

---
 Makefile.sources            |   2 +-
 javascript/jsapi.h          |  12 ++++
 javascript/jsapi/document.c |   6 +-
 javascript/jsapi/element.c  | 106 ++++++++++++++++++++++++++++++++++++
 4 files changed, 120 insertions(+), 6 deletions(-)
 create mode 100644 javascript/jsapi/element.c

diff --git a/Makefile.sources b/Makefile.sources
index 95695f786..f7f05ca3a 100644
--- a/Makefile.sources
+++ b/Makefile.sources
@@ -31,7 +31,7 @@ S_DESKTOP := cookies.c history_global_core.c hotlist.c knockout.c	\
 
 # Javascript sources
 ifeq ($(NETSURF_USE_JS),YES)
-S_JSAPI = window.c document.c navigator.c console.c
+S_JSAPI = window.c document.c navigator.c console.c element.c
 S_JAVASCRIPT += content.c jsapi.c $(addprefix jsapi/,$(S_JSAPI))
 else
 S_JAVASCRIPT += none.c
diff --git a/javascript/jsapi.h b/javascript/jsapi.h
index a44323f77..b23b4d30a 100644
--- a/javascript/jsapi.h
+++ b/javascript/jsapi.h
@@ -136,6 +136,9 @@ JS_NewCompartmentAndGlobalObject(JSContext *cx,
 
 #endif
 
+typedef struct dom_element dom_element;
+typedef struct html_content html_content;
+
 /** Create a new javascript window object
  *
  * @param cx The javascript context.
@@ -170,4 +173,13 @@ JSObject *jsapi_new_console(JSContext *cx, JSObject *parent);
  */
 JSObject *jsapi_new_navigator(JSContext *cx, JSObject *parent);
 
+/** Create a new javascript element object
+ *
+ * @param cx The javascript context.
+ * @param parent The parent object, usually a global window object
+ * @param doc_priv The private context to set on the object
+ * @return new javascript object or NULL on error
+ */
+JSObject *jsapi_new_element(JSContext *cx, JSObject *parent, struct html_content *htmlc, struct dom_element *domelement);
+
 #endif
diff --git a/javascript/jsapi/document.c b/javascript/jsapi/document.c
index 49144c4a9..41d889873 100644
--- a/javascript/jsapi/document.c
+++ b/javascript/jsapi/document.c
@@ -144,11 +144,7 @@ static JSBool JSAPI_NATIVE(getElementById, JSContext *cx, uintN argc, jsval *vp)
 
 	dom_document_get_element_by_id(htmlc->document, idstr, &idelement);
 
-	if (idelement==NULL) {
-	JSAPI_SET_RVAL(cx, vp, JSVAL_NULL);
-	} else {
-		/* create element object and return it*/
-	}
+	JSAPI_SET_RVAL(cx, vp, OBJECT_TO_JSVAL(jsapi_new_element(cx, JS_GetGlobalObject(cx), htmlc, idelement)));
 
 	return JS_TRUE;
 }
diff --git a/javascript/jsapi/element.c b/javascript/jsapi/element.c
new file mode 100644
index 000000000..11d8b1a14
--- /dev/null
+++ b/javascript/jsapi/element.c
@@ -0,0 +1,106 @@
+/*
+ * 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/>.
+ */
+
+#include <dom/dom.h>
+
+
+#include "javascript/jsapi.h"
+#include "utils/config.h"
+#include "render/html_internal.h"
+#include "utils/log.h"
+
+static void jsfinalize_element(JSContext *cx, JSObject *obj);
+
+typedef struct {
+	struct html_content *htmlc;
+	struct dom_element *dom_element;
+} elementp;
+
+static JSClass jsclass_element =
+{
+        "element", 
+	JSCLASS_HAS_PRIVATE, 
+	JS_PropertyStub, 
+	JS_PropertyStub, 
+	JS_PropertyStub, 
+	JS_StrictPropertyStub,
+        JS_EnumerateStub, 
+	JS_ResolveStub, 
+	JS_ConvertStub, 
+	jsfinalize_element, 
+	JSCLASS_NO_OPTIONAL_MEMBERS
+};
+
+static void jsfinalize_element(JSContext *cx, JSObject *obj)
+{
+	elementp *element;
+	element = JS_GetInstancePrivate(cx, obj, &jsclass_element, NULL);
+	if (element != NULL) {
+		free(element);
+	}
+}
+
+
+
+static JSFunctionSpec jsfunctions_element[] = {
+	JSAPI_FS_END
+};
+
+
+JSObject *
+jsapi_new_element(JSContext *cx, 
+		  JSObject *parent, 
+		  struct html_content *htmlc, 
+		  struct dom_element *domelement)
+{
+	/* create element object and return it*/
+	JSObject *jselement;
+	elementp *element;
+
+	element = malloc(sizeof(element));
+	if (element == NULL) {
+		return NULL;
+	}
+	element->htmlc = htmlc;
+	element->dom_element = domelement;
+
+	jselement = JS_InitClass(cx, 
+			   parent, 
+			   NULL, 
+			   &jsclass_element, 
+			   NULL, 
+			   0, 
+			   NULL, 
+			   jsfunctions_element, 
+			   NULL, 
+			   NULL);
+	if (jselement == NULL) {
+		free(element);
+		return NULL;
+	}
+
+	LOG(("setting element private to %p", element));
+	/* private pointer to browsing context */
+	if (JS_SetPrivate(cx, jselement, element) != JS_TRUE) {
+		LOG(("failed to set content"));
+		free(element);
+		return NULL;
+	}
+
+	return jselement;
+}