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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsIXPConnect.h"
#include "mozStorageAsyncStatement.h"
#include "mozStorageService.h"
#include "nsMemory.h"
#include "nsString.h"
#include "nsServiceManagerUtils.h"
#include "mozStorageAsyncStatementJSHelper.h"
#include "mozStorageAsyncStatementParams.h"
#include "jsapi.h"
#include "xpc_make_class.h"
namespace mozilla {
namespace storage {
////////////////////////////////////////////////////////////////////////////////
//// AsyncStatementJSHelper
nsresult AsyncStatementJSHelper::getParams(AsyncStatement* aStatement,
JSContext* aCtx, JSObject* aScopeObj,
JS::Value* _params) {
MOZ_ASSERT(NS_IsMainThread());
#ifdef DEBUG
int32_t state;
(void)aStatement->GetState(&state);
NS_ASSERTION(state == mozIStorageAsyncStatement::MOZ_STORAGE_STATEMENT_READY,
"Invalid state to get the params object - all calls will fail!");
#endif
JS::RootedObject scope(aCtx, aScopeObj);
if (!aStatement->mStatementParamsHolder) {
dom::GlobalObject global(aCtx, scope);
if (global.Failed()) {
return NS_ERROR_UNEXPECTED;
}
nsCOMPtr<nsPIDOMWindowInner> window =
do_QueryInterface(global.GetAsSupports());
RefPtr<AsyncStatementParams> params(
new AsyncStatementParams(window, aStatement));
NS_ENSURE_TRUE(params, NS_ERROR_OUT_OF_MEMORY);
RefPtr<AsyncStatementParamsHolder> paramsHolder =
new AsyncStatementParamsHolder(params);
NS_ENSURE_TRUE(paramsHolder, NS_ERROR_OUT_OF_MEMORY);
aStatement->mStatementParamsHolder =
new nsMainThreadPtrHolder<AsyncStatementParamsHolder>(
"Statement::mStatementParamsHolder", paramsHolder);
}
RefPtr<AsyncStatementParams> params(
aStatement->mStatementParamsHolder->Get());
JSObject* obj = params->WrapObject(aCtx, nullptr);
if (!obj) {
return NS_ERROR_UNEXPECTED;
}
_params->setObject(*obj);
return NS_OK;
}
NS_IMETHODIMP_(MozExternalRefCountType) AsyncStatementJSHelper::AddRef() {
return 2;
}
NS_IMETHODIMP_(MozExternalRefCountType) AsyncStatementJSHelper::Release() {
return 1;
}
NS_INTERFACE_MAP_BEGIN(AsyncStatementJSHelper)
NS_INTERFACE_MAP_ENTRY(nsIXPCScriptable)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
////////////////////////////////////////////////////////////////////////////////
//// nsIXPCScriptable
#define XPC_MAP_CLASSNAME AsyncStatementJSHelper
#define XPC_MAP_QUOTED_CLASSNAME "AsyncStatementJSHelper"
#define XPC_MAP_FLAGS \
(XPC_SCRIPTABLE_WANT_RESOLVE | XPC_SCRIPTABLE_ALLOW_PROP_MODS_DURING_RESOLVE)
#include "xpc_map_end.h"
NS_IMETHODIMP
AsyncStatementJSHelper::Resolve(nsIXPConnectWrappedNative* aWrapper,
JSContext* aCtx, JSObject* aScopeObj, jsid aId,
bool* resolvedp, bool* _retval) {
if (!JSID_IS_STRING(aId)) return NS_OK;
// Cast to async via mozI* since direct from nsISupports is ambiguous.
JS::RootedObject scope(aCtx, aScopeObj);
JS::RootedId id(aCtx, aId);
mozIStorageAsyncStatement* iAsyncStmt =
static_cast<mozIStorageAsyncStatement*>(aWrapper->Native());
AsyncStatement* stmt = static_cast<AsyncStatement*>(iAsyncStmt);
#ifdef DEBUG
{
nsISupports* supp = aWrapper->Native();
nsCOMPtr<mozIStorageAsyncStatement> isStatement(do_QueryInterface(supp));
NS_ASSERTION(isStatement, "How is this not an async statement?!");
}
#endif
if (::JS_LinearStringEqualsLiteral(JSID_TO_LINEAR_STRING(id), "params")) {
JS::RootedValue val(aCtx);
nsresult rv = getParams(stmt, aCtx, scope, val.address());
NS_ENSURE_SUCCESS(rv, rv);
*_retval = ::JS_DefinePropertyById(aCtx, scope, id, val, JSPROP_RESOLVING);
*resolvedp = true;
return NS_OK;
}
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
//// AsyncStatementParamsHolder
NS_IMPL_ISUPPORTS0(AsyncStatementParamsHolder);
AsyncStatementParamsHolder::~AsyncStatementParamsHolder() {
MOZ_ASSERT(NS_IsMainThread());
// We are considered dead at this point, so any wrappers for row or params
// need to lose their reference to the statement.
mParams->mStatement = nullptr;
}
} // namespace storage
} // namespace mozilla