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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 "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;
}
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