зеркало из https://github.com/mozilla/gecko-dev.git
WIP, adding scriptable helpers for the DOM, will be used by XPConnect eventually. Not part of the build.
This commit is contained in:
jst%netscape.com
Родитель
a040c74c61
Коммит
2ec1c7ccaf
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@ -0,0 +1,378 @@
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are
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* Copyright (C) 2001 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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* Johnny Stenback <jst@netscape.com> (original author)
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*/
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#include "nsDOMScriptableHelper.h"
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#include "jsapi.h"
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#include "nsContentUtils.h"
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#include "nsString.h"
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#include "nsIServiceManager.h"
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// nsHTMLDocument helper includes
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#include "nsIDOMDocument.h"
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#include "nsIDOMHTMLDocument.h"
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#include "nsIDOMNSDocument.h"
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#include "nsIDOMLocation.h"
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#include "nsIDOMNodeList.h"
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// nsHTMLFormElement helper includes
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#include "nsIDOMHTMLFormElement.h"
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#include "nsIDOMHTMLCollection.h"
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#include "nsIDOMNSHTMLFormControlList.h"
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jsid nsDOMScriptableHelper::sLocation_id = nsnull;
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PRUint32 nsDOMScriptableHelper::sInstanceCount = 0;
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nsIXPConnect *nsDOMScriptableHelper::sXPConnect = nsnull;
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nsDOMScriptableHelper::nsDOMScriptableHelper()
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{
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NS_INIT_REFCNT();
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if (!sXPConnect) {
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nsServiceManager::GetService(nsIXPConnect::GetCID(),
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nsIXPConnect::GetIID(),
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(nsISupports **)&sXPConnect);
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}
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sInstanceCount++;
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}
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nsDOMScriptableHelper::~nsDOMScriptableHelper()
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{
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sInstanceCount--;
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if (!sInstanceCount) {
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NS_IF_RELEASE(sXPConnect);
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}
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}
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NS_IMPL_ADDREF(nsDOMScriptableHelper);
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NS_IMPL_RELEASE(nsDOMScriptableHelper);
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NS_INTERFACE_MAP_BEGIN(nsDOMScriptableHelper)
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NS_INTERFACE_MAP_ENTRY(nsIXPCScriptable)
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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XPC_IMPLEMENT_FORWARD_CREATE(nsDOMScriptableHelper)
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XPC_IMPLEMENT_FORWARD_GETFLAGS(nsDOMScriptableHelper)
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XPC_IMPLEMENT_FORWARD_LOOKUPPROPERTY(nsDOMScriptableHelper)
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XPC_IMPLEMENT_FORWARD_DEFINEPROPERTY(nsDOMScriptableHelper)
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XPC_IMPLEMENT_FORWARD_GETPROPERTY(nsDOMScriptableHelper)
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XPC_IMPLEMENT_FORWARD_SETPROPERTY(nsDOMScriptableHelper)
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XPC_IMPLEMENT_FORWARD_GETATTRIBUTES(nsDOMScriptableHelper)
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XPC_IMPLEMENT_FORWARD_SETATTRIBUTES(nsDOMScriptableHelper)
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XPC_IMPLEMENT_FORWARD_DELETEPROPERTY(nsDOMScriptableHelper)
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XPC_IMPLEMENT_FORWARD_DEFAULTVALUE(nsDOMScriptableHelper)
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XPC_IMPLEMENT_FORWARD_ENUMERATE(nsDOMScriptableHelper)
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XPC_IMPLEMENT_FORWARD_CHECKACCESS(nsDOMScriptableHelper)
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XPC_IMPLEMENT_FORWARD_CALL(nsDOMScriptableHelper)
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XPC_IMPLEMENT_FORWARD_CONSTRUCT(nsDOMScriptableHelper)
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XPC_IMPLEMENT_FORWARD_HASINSTANCE(nsDOMScriptableHelper)
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XPC_IMPLEMENT_FORWARD_FINALIZE(nsDOMScriptableHelper)
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// static
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nsresult
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nsDOMScriptableHelper::GetDefaultHelper(void **aHelper)
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{
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static nsIXPCScriptable *sHelper = nsnull;
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if (!sHelper) {
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nsresult rv = GetHelperBody(new nsDOMScriptableHelper, &sHelper);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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*aHelper = sHelper;
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NS_ADDREF(sHelper);
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return NS_OK;
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}
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nsresult
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nsDOMScriptableHelper::GetHelperBody(nsDOMScriptableHelper *aHelper,
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nsIXPCScriptable **aStaticHolder)
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{
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if (!aHelper) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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*aStaticHolder = aHelper;
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return nsContentUtils::ReleaseOnShutdown(NS_REINTERPRET_CAST(nsISupports **,
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aStaticHolder));
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}
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static PRBool
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DefineJSId(JSContext *cx, const char *str, jsval *val)
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{
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JSString *jsstr = ::JS_InternString(cx, str);
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if (!jsstr)
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return PR_FALSE;
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return ::JS_ValueToId(cx, STRING_TO_JSVAL(jsstr), val);
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}
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// static
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nsresult
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nsDOMScriptableHelper::DefineStaticJSIds(JSContext *cx)
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{
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if (!DefineJSId(cx, "location", &sLocation_id))
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return NS_ERROR_FAILURE;
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return NS_OK;
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}
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// nsHTMLDocument helper
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class nsHTMLDocHelper : nsDOMScriptableHelper
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{
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public:
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virtual ~nsHTMLDocHelper() {};
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NS_IMETHOD GetProperty(JSContext *cx, JSObject *obj,
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jsid id, jsval *vp,
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nsIXPConnectWrappedNative* wrapper,
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nsIXPCScriptable* arbitrary,
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JSBool* retval);
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NS_IMETHOD SetProperty(JSContext *cx, JSObject *obj, jsid id, jsval *vp,
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nsIXPConnectWrappedNative* wrapper,
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nsIXPCScriptable* arbitrary,
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JSBool* retval);
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};
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NS_IMETHODIMP
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nsHTMLDocHelper::GetProperty(JSContext *cx, JSObject *obj,
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jsid id, jsval *vp,
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nsIXPConnectWrappedNative* wrapper,
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nsIXPCScriptable* arbitrary,
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JSBool* retval)
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{
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jsval val;
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if (!::JS_IdToValue(cx, id, &val))
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return NS_ERROR_OUT_OF_MEMORY; // Is this correct?
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if (JSVAL_IS_STRING(val)) {
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NS_ENSURE_TRUE(sXPConnect, NS_ERROR_NOT_AVAILABLE);
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nsCOMPtr<nsISupports> native;
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wrapper->GetNative(getter_AddRefs(native));
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NS_ABORT_IF_FALSE(native, "No native!");
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nsCOMPtr<nsIDOMHTMLDocument> doc(do_QueryInterface(native));
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JSString *jsstr = JSVAL_TO_STRING(val);
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nsLiteralString prop_name(NS_REINTERPRET_CAST(const PRUnichar *,
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::JS_GetStringChars(jsstr)),
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::JS_GetStringLength(jsstr));
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nsCOMPtr<nsIDOMNodeList> node_list;
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doc->GetElementsByName(prop_name, getter_AddRefs(node_list));
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if (node_list) {
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nsCOMPtr<nsIXPConnectJSObjectHolder> holder;
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nsresult rv = sXPConnect->WrapNative(cx, obj, node_list,
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NS_GET_IID(nsIDOMNodeList /* nsISupports */),
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getter_AddRefs(holder));
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NS_ENSURE_SUCCESS(rv, rv);
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JSObject* prop_obj = nsnull; // XPConnect-wrapped property value.
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holder->GetJSObject(&prop_obj);
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if (prop_obj) {
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*vp = OBJECT_TO_JSVAL(prop_obj);
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*retval = PR_TRUE;
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return NS_OK;
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}
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}
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}
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return arbitrary->GetProperty(cx, obj, id, vp, wrapper, NULL, retval);
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}
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NS_IMETHODIMP
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nsHTMLDocHelper::SetProperty(JSContext *cx, JSObject *obj, jsid id, jsval *vp,
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nsIXPConnectWrappedNative* wrapper,
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nsIXPCScriptable* arbitrary,
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JSBool* retval)
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{
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if (!DidDefineStaticJSIds()) {
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DefineStaticJSIds(cx);
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}
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if (id == sLocation_id) {
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nsCOMPtr<nsISupports> native;
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wrapper->GetNative(getter_AddRefs(native));
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NS_ABORT_IF_FALSE(native, "No native!");
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nsCOMPtr<nsIDOMNSDocument> doc(do_QueryInterface(native));
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nsCOMPtr<nsIDOMLocation> location;
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doc->GetLocation(getter_AddRefs(location));
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if (!location)
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return NS_OK;
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JSString *jsstr = ::JS_ValueToString(cx, *vp);
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if (!jsstr)
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return NS_ERROR_OUT_OF_MEMORY;
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nsLiteralString str(NS_REINTERPRET_CAST(const PRUnichar *,
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::JS_GetStringChars(jsstr)),
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::JS_GetStringLength(jsstr));
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return location->SetHref(str);
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}
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return arbitrary->SetProperty(cx, obj, id, vp, wrapper, NULL, retval);
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}
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// static
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nsresult
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nsDOMScriptableHelper::GetHTMLDocHelper(void **aHelper)
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{
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static nsIXPCScriptable *sHelper = nsnull;
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if (!sHelper) {
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nsresult rv = GetHelperBody(new nsHTMLDocHelper, &sHelper);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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*aHelper = sHelper;
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NS_ADDREF(sHelper);
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return NS_OK;
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}
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// nsHTMLFormElement helper
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class nsHTMLFormHelper : nsDOMScriptableHelper
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{
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public:
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virtual ~nsHTMLFormHelper() {};
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NS_IMETHOD GetProperty(JSContext *cx, JSObject *obj,
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jsid id, jsval *vp,
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nsIXPConnectWrappedNative* wrapper,
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nsIXPCScriptable* arbitrary,
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JSBool* retval);
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};
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NS_IMETHODIMP
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nsHTMLFormHelper::GetProperty(JSContext *cx, JSObject *obj,
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jsid id, jsval *vp,
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nsIXPConnectWrappedNative* wrapper,
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nsIXPCScriptable* arbitrary,
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JSBool* retval)
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{
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jsval val;
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if (!::JS_IdToValue(cx, id, &val))
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return NS_ERROR_OUT_OF_MEMORY; // Is this correct?
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if (JSVAL_IS_STRING(val)) {
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nsCOMPtr<nsISupports> native;
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wrapper->GetNative(getter_AddRefs(native));
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NS_ABORT_IF_FALSE(native, "No native!");
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nsCOMPtr<nsIDOMHTMLFormElement> element(do_QueryInterface(native));
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nsCOMPtr<nsIDOMHTMLCollection> html_collection;
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element->GetElements(getter_AddRefs(html_collection));
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nsCOMPtr<nsIDOMNSHTMLFormControlList>
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form_ctrl_list(do_QueryInterface(html_collection));
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JSString *jsstr = JSVAL_TO_STRING(val);
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nsLiteralString prop(NS_REINTERPRET_CAST(const PRUnichar *,
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::JS_GetStringChars(jsstr)),
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::JS_GetStringLength(jsstr));
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nsCOMPtr<nsISupports> propValue;
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form_ctrl_list->NamedItem(prop, getter_AddRefs(propValue));
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if (propValue) {
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JSObject* interfaceObject; // XPConnect-wrapped property value.
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nsCOMPtr<nsIXPConnectJSObjectHolder> holder;
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nsresult rv = sXPConnect->WrapNative(cx, obj, propValue,
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NS_GET_IID(nsISupports),
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getter_AddRefs(holder));
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NS_ENSURE_SUCCESS(rv, rv);
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holder->GetJSObject(&interfaceObject);
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if (interfaceObject) {
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*vp = OBJECT_TO_JSVAL(interfaceObject);
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*retval = PR_TRUE;
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return NS_OK;
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}
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}
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}
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return arbitrary->GetProperty(cx, obj, id, vp, wrapper, NULL, retval);
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}
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// static
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nsresult
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nsDOMScriptableHelper::GetHTMLFormHelper(void **aHelper)
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{
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static nsIXPCScriptable *sHelper = nsnull;
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if (!sHelper) {
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nsresult rv = GetHelperBody(new nsHTMLDocHelper, &sHelper);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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*aHelper = sHelper;
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NS_ADDREF(sHelper);
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return NS_OK;
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}
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@ -0,0 +1,61 @@
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
||||
*
|
||||
* The contents of this file are subject to the Netscape Public
|
||||
* License Version 1.1 (the "License"); you may not use this file
|
||||
* except in compliance with the License. You may obtain a copy of
|
||||
* the License at http://www.mozilla.org/NPL/
|
||||
*
|
||||
* Software distributed under the License is distributed on an "AS
|
||||
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
|
||||
* implied. See the License for the specific language governing
|
||||
* rights and limitations under the License.
|
||||
*
|
||||
* The Original Code is Mozilla Communicator client code.
|
||||
*
|
||||
* The Initial Developer of the Original Code is Netscape Communications
|
||||
* Corporation. Portions created by Netscape are
|
||||
* Copyright (C) 2001 Netscape Communications Corporation. All
|
||||
* Rights Reserved.
|
||||
*
|
||||
* Contributor(s):
|
||||
* Johnny Stenback <jst@netscape.com> (original author)
|
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*/
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#ifndef nsDOMScriptableHelper_h___
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#define nsDOMScriptableHelper_h___
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#include "nsIXPCScriptable.h"
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class nsDOMScriptableHelper : public nsIXPCScriptable
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{
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public:
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// nsISupports
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NS_DECL_ISUPPORTS
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// nsIXPCScriptable
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XPC_DECLARE_IXPCSCRIPTABLE
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nsDOMScriptableHelper();
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virtual ~nsDOMScriptableHelper();
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static nsresult GetDefaultHelper(void **aHelper);
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static nsresult GetHTMLDocHelper(void **aHelper);
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static nsresult GetHTMLFormHelper(void **aHelper);
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protected:
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PRBool DidDefineStaticJSIds()
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{
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return sLocation_id;
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}
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nsresult DefineStaticJSIds(JSContext *cx);
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static nsresult GetHelperBody(nsDOMScriptableHelper *aHelper,
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nsIXPCScriptable **aStaticHolder);
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static jsid sLocation_id;
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static nsIXPConnect* sXPConnect;
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static PRUint32 sInstanceCount;
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};
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#endif /* nsDOMScriptableHelper_h___ */
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