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/* -*- 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 "nsXULControllers.h"
#include "nsIController.h"
#include "mozilla/RefPtr.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();
}
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_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;
}