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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 "nsString.h"
#include "nsIControllerCommand.h"
#include "nsControllerCommandTable.h"
nsresult NS_NewControllerCommandTable(nsIControllerCommandTable** aResult);
// this value is used to size the hash table. Just a sensible upper bound
#define NUM_COMMANDS_LENGTH 32
nsControllerCommandTable::nsControllerCommandTable()
: mCommandsTable(NUM_COMMANDS_LENGTH)
, mMutable(true)
{
}
nsControllerCommandTable::~nsControllerCommandTable()
{
}
NS_IMPL_ISUPPORTS(nsControllerCommandTable, nsIControllerCommandTable,
nsISupportsWeakReference)
NS_IMETHODIMP
nsControllerCommandTable::MakeImmutable(void)
{
mMutable = false;
return NS_OK;
}
NS_IMETHODIMP
nsControllerCommandTable::RegisterCommand(const char* aCommandName,
nsIControllerCommand* aCommand)
{
NS_ENSURE_TRUE(mMutable, NS_ERROR_FAILURE);
mCommandsTable.Put(nsDependentCString(aCommandName), aCommand);
return NS_OK;
}
NS_IMETHODIMP
nsControllerCommandTable::UnregisterCommand(const char* aCommandName,
nsIControllerCommand* aCommand)
{
NS_ENSURE_TRUE(mMutable, NS_ERROR_FAILURE);
nsDependentCString commandKey(aCommandName);
if (!mCommandsTable.Get(commandKey, nullptr)) {
return NS_ERROR_FAILURE;
}
mCommandsTable.Remove(commandKey);
return NS_OK;
}
NS_IMETHODIMP
nsControllerCommandTable::FindCommandHandler(const char* aCommandName,
nsIControllerCommand** aResult)
{
NS_ENSURE_ARG_POINTER(aResult);
*aResult = nullptr;
nsCOMPtr<nsIControllerCommand> foundCommand;
mCommandsTable.Get(nsDependentCString(aCommandName),
getter_AddRefs(foundCommand));
if (!foundCommand) {
return NS_ERROR_FAILURE;
}
foundCommand.forget(aResult);
return NS_OK;
}
NS_IMETHODIMP
nsControllerCommandTable::IsCommandEnabled(const char* aCommandName,
nsISupports* aCommandRefCon,
bool* aResult)
{
NS_ENSURE_ARG_POINTER(aResult);
*aResult = false;
nsCOMPtr<nsIControllerCommand> commandHandler;
FindCommandHandler(aCommandName, getter_AddRefs(commandHandler));
if (!commandHandler) {
NS_WARNING("Controller command table asked about a command that it does "
"not handle");
return NS_OK;
}
return commandHandler->IsCommandEnabled(aCommandName, aCommandRefCon,
aResult);
}
NS_IMETHODIMP
nsControllerCommandTable::UpdateCommandState(const char* aCommandName,
nsISupports* aCommandRefCon)
{
nsCOMPtr<nsIControllerCommand> commandHandler;
FindCommandHandler(aCommandName, getter_AddRefs(commandHandler));
if (!commandHandler) {
NS_WARNING("Controller command table asked to update the state of a "
"command that it does not handle");
return NS_OK;
}
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsControllerCommandTable::SupportsCommand(const char* aCommandName,
nsISupports* aCommandRefCon,
bool* aResult)
{
NS_ENSURE_ARG_POINTER(aResult);
// XXX: need to check the readonly and disabled states
*aResult = false;
nsCOMPtr<nsIControllerCommand> commandHandler;
FindCommandHandler(aCommandName, getter_AddRefs(commandHandler));
*aResult = (commandHandler.get() != nullptr);
return NS_OK;
}
NS_IMETHODIMP
nsControllerCommandTable::DoCommand(const char* aCommandName,
nsISupports* aCommandRefCon)
{
nsCOMPtr<nsIControllerCommand> commandHandler;
FindCommandHandler(aCommandName, getter_AddRefs(commandHandler));
if (!commandHandler) {
NS_WARNING("Controller command table asked to do a command that it does "
"not handle");
return NS_OK;
}
return commandHandler->DoCommand(aCommandName, aCommandRefCon);
}
NS_IMETHODIMP
nsControllerCommandTable::DoCommandParams(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon)
{
nsCOMPtr<nsIControllerCommand> commandHandler;
FindCommandHandler(aCommandName, getter_AddRefs(commandHandler));
if (!commandHandler) {
NS_WARNING("Controller command table asked to do a command that it does "
"not handle");
return NS_OK;
}
return commandHandler->DoCommandParams(aCommandName, aParams, aCommandRefCon);
}
NS_IMETHODIMP
nsControllerCommandTable::GetCommandState(const char* aCommandName,
nsICommandParams* aParams,
nsISupports* aCommandRefCon)
{
nsCOMPtr<nsIControllerCommand> commandHandler;
FindCommandHandler(aCommandName, getter_AddRefs(commandHandler));
if (!commandHandler) {
NS_WARNING("Controller command table asked to do a command that it does "
"not handle");
return NS_OK;
}
return commandHandler->GetCommandStateParams(aCommandName, aParams,
aCommandRefCon);
}
NS_IMETHODIMP
nsControllerCommandTable::GetSupportedCommands(uint32_t* aCount,
char*** aCommands)
{
char** commands =
static_cast<char**>(moz_xmalloc(sizeof(char*) * mCommandsTable.Count()));
*aCount = mCommandsTable.Count();
*aCommands = commands;
for (auto iter = mCommandsTable.Iter(); !iter.Done(); iter.Next()) {
*commands = ToNewCString(iter.Key());
commands++;
}
return NS_OK;
}
nsresult
NS_NewControllerCommandTable(nsIControllerCommandTable** aResult)
{
NS_PRECONDITION(aResult != nullptr, "null ptr");
if (!aResult) {
return NS_ERROR_NULL_POINTER;
}
nsControllerCommandTable* newCommandTable = new nsControllerCommandTable();
NS_ADDREF(newCommandTable);
*aResult = newCommandTable;
return NS_OK;
}
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