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Diffstat (limited to 'dom/xul/nsXULControllers.cpp')
| -rw-r--r-- | dom/xul/nsXULControllers.cpp | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/dom/xul/nsXULControllers.cpp b/dom/xul/nsXULControllers.cpp new file mode 100644 index 000000000..6b795b29a --- /dev/null +++ b/dom/xul/nsXULControllers.cpp @@ -0,0 +1,246 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* 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/. */ + +/* + + This file provides the implementation for the XUL "controllers" + object. + +*/ + +#include "nsString.h" + +#include "nsIControllers.h" +#include "nsIDOMElement.h" +#include "nsXULControllers.h" +#include "nsDOMClassInfoID.h" +#include "nsIController.h" + +//---------------------------------------------------------------------- + +nsXULControllers::nsXULControllers() +: mCurControllerID(0) +{ +} + +nsXULControllers::~nsXULControllers(void) +{ + DeleteControllers(); +} + +void +nsXULControllers::DeleteControllers() +{ + uint32_t count = mControllers.Length(); + for (uint32_t i = 0; i < count; i++) + { + nsXULControllerData* controllerData = mControllers.ElementAt(i); + delete controllerData; // releases the nsIController + } + + mControllers.Clear(); +} + + +nsresult +NS_NewXULControllers(nsISupports* aOuter, REFNSIID aIID, void** aResult) +{ + NS_PRECONDITION(aOuter == nullptr, "no aggregation"); + if (aOuter) + return NS_ERROR_NO_AGGREGATION; + + nsXULControllers* controllers = new nsXULControllers(); + nsresult rv; + NS_ADDREF(controllers); + rv = controllers->QueryInterface(aIID, aResult); + NS_RELEASE(controllers); + return rv; +} + +NS_IMPL_CYCLE_COLLECTION_CLASS(nsXULControllers) + +NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsXULControllers) + tmp->DeleteControllers(); +NS_IMPL_CYCLE_COLLECTION_UNLINK_END +NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsXULControllers) + { + uint32_t i, count = tmp->mControllers.Length(); + for (i = 0; i < count; ++i) { + nsXULControllerData* controllerData = tmp->mControllers[i]; + if (controllerData) { + cb.NoteXPCOMChild(controllerData->mController); + } + } + } +NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END + +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsXULControllers) + NS_INTERFACE_MAP_ENTRY(nsIControllers) + NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIControllers) + NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(XULControllers) +NS_INTERFACE_MAP_END + +NS_IMPL_CYCLE_COLLECTING_ADDREF(nsXULControllers) +NS_IMPL_CYCLE_COLLECTING_RELEASE(nsXULControllers) + +NS_IMETHODIMP +nsXULControllers::GetControllerForCommand(const char *aCommand, nsIController** _retval) +{ + NS_ENSURE_ARG_POINTER(_retval); + *_retval = nullptr; + + uint32_t count = mControllers.Length(); + for (uint32_t i=0; i < count; i++) + { + nsXULControllerData* controllerData = mControllers.ElementAt(i); + if (controllerData) + { + nsCOMPtr<nsIController> controller; + controllerData->GetController(getter_AddRefs(controller)); + if (controller) + { + bool supportsCommand; + controller->SupportsCommand(aCommand, &supportsCommand); + if (supportsCommand) { + controller.forget(_retval); + return NS_OK; + } + } + } + } + + return NS_OK; +} + +NS_IMETHODIMP +nsXULControllers::InsertControllerAt(uint32_t aIndex, nsIController *controller) +{ + nsXULControllerData* controllerData = new nsXULControllerData(++mCurControllerID, controller); +#ifdef DEBUG + nsXULControllerData** inserted = +#endif + mControllers.InsertElementAt(aIndex, controllerData); + NS_ASSERTION(inserted != nullptr, "Insertion of controller failed"); + return NS_OK; +} + +NS_IMETHODIMP +nsXULControllers::RemoveControllerAt(uint32_t aIndex, nsIController **_retval) +{ + NS_ENSURE_ARG_POINTER(_retval); + *_retval = nullptr; + + nsXULControllerData* controllerData = mControllers.SafeElementAt(aIndex); + if (!controllerData) return NS_ERROR_FAILURE; + + mControllers.RemoveElementAt(aIndex); + + controllerData->GetController(_retval); + delete controllerData; + + return NS_OK; +} + + +NS_IMETHODIMP +nsXULControllers::GetControllerAt(uint32_t aIndex, nsIController **_retval) +{ + NS_ENSURE_ARG_POINTER(_retval); + *_retval = nullptr; + + nsXULControllerData* controllerData = mControllers.SafeElementAt(aIndex); + if (!controllerData) return NS_ERROR_FAILURE; + + return controllerData->GetController(_retval); // does the addref +} + +NS_IMETHODIMP +nsXULControllers::AppendController(nsIController *controller) +{ + // This assigns controller IDs starting at 1 so we can use 0 to test if an ID was obtained + nsXULControllerData* controllerData = new nsXULControllerData(++mCurControllerID, controller); + +#ifdef DEBUG + nsXULControllerData** appended = +#endif + mControllers.AppendElement(controllerData); + NS_ASSERTION(appended != nullptr, "Appending controller failed"); + return NS_OK; +} + +NS_IMETHODIMP +nsXULControllers::RemoveController(nsIController *controller) +{ + // first get the identity pointer + nsCOMPtr<nsISupports> controllerSup(do_QueryInterface(controller)); + // then find it + uint32_t count = mControllers.Length(); + for (uint32_t i = 0; i < count; i++) + { + nsXULControllerData* controllerData = mControllers.ElementAt(i); + if (controllerData) + { + nsCOMPtr<nsIController> thisController; + controllerData->GetController(getter_AddRefs(thisController)); + nsCOMPtr<nsISupports> thisControllerSup(do_QueryInterface(thisController)); // get identity + if (thisControllerSup == controllerSup) + { + mControllers.RemoveElementAt(i); + delete controllerData; + return NS_OK; + } + } + } + return NS_ERROR_FAILURE; // right thing to return if no controller found? +} + +NS_IMETHODIMP +nsXULControllers::GetControllerId(nsIController *controller, uint32_t *_retval) +{ + NS_ENSURE_ARG_POINTER(_retval); + + uint32_t count = mControllers.Length(); + for (uint32_t i = 0; i < count; i++) + { + nsXULControllerData* controllerData = mControllers.ElementAt(i); + if (controllerData) + { + nsCOMPtr<nsIController> thisController; + controllerData->GetController(getter_AddRefs(thisController)); + if (thisController.get() == controller) + { + *_retval = controllerData->GetControllerID(); + return NS_OK; + } + } + } + return NS_ERROR_FAILURE; // none found +} + +NS_IMETHODIMP +nsXULControllers::GetControllerById(uint32_t controllerID, nsIController **_retval) +{ + NS_ENSURE_ARG_POINTER(_retval); + + uint32_t count = mControllers.Length(); + for (uint32_t i = 0; i < count; i++) + { + nsXULControllerData* controllerData = mControllers.ElementAt(i); + if (controllerData && controllerData->GetControllerID() == controllerID) + { + return controllerData->GetController(_retval); + } + } + return NS_ERROR_FAILURE; // none found +} + +NS_IMETHODIMP +nsXULControllers::GetControllerCount(uint32_t *_retval) +{ + NS_ENSURE_ARG_POINTER(_retval); + *_retval = mControllers.Length(); + return NS_OK; +} + |