diff options
Diffstat (limited to 'embedding/components/commandhandler/nsControllerCommandTable.cpp')
| -rw-r--r-- | embedding/components/commandhandler/nsControllerCommandTable.cpp | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/embedding/components/commandhandler/nsControllerCommandTable.cpp b/embedding/components/commandhandler/nsControllerCommandTable.cpp new file mode 100644 index 000000000..91075bba4 --- /dev/null +++ b/embedding/components/commandhandler/nsControllerCommandTable.cpp @@ -0,0 +1,209 @@ +/* -*- 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; +} |