1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/embedding/components/commandhandler/src/nsControllerCommandTable.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,206 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "nsString.h"
1.10 +#include "nsIControllerCommand.h"
1.11 +#include "nsControllerCommandTable.h"
1.12 +
1.13 +// prototype;
1.14 +nsresult
1.15 +NS_NewControllerCommandTable(nsIControllerCommandTable** aResult);
1.16 +
1.17 +
1.18 +// this value is used to size the hash table. Just a sensible upper bound
1.19 +#define NUM_COMMANDS_BOUNDS 64
1.20 +
1.21 +
1.22 +nsControllerCommandTable::nsControllerCommandTable()
1.23 +: mCommandsTable(NUM_COMMANDS_BOUNDS)
1.24 +, mMutable(true)
1.25 +{
1.26 +}
1.27 +
1.28 +
1.29 +nsControllerCommandTable::~nsControllerCommandTable()
1.30 +{
1.31 +}
1.32 +
1.33 +NS_IMPL_ISUPPORTS(nsControllerCommandTable, nsIControllerCommandTable, nsISupportsWeakReference)
1.34 +
1.35 +NS_IMETHODIMP
1.36 +nsControllerCommandTable::MakeImmutable(void)
1.37 +{
1.38 + mMutable = false;
1.39 + return NS_OK;
1.40 +}
1.41 +
1.42 +NS_IMETHODIMP
1.43 +nsControllerCommandTable::RegisterCommand(const char * aCommandName, nsIControllerCommand *aCommand)
1.44 +{
1.45 + NS_ENSURE_TRUE(mMutable, NS_ERROR_FAILURE);
1.46 +
1.47 + mCommandsTable.Put(nsDependentCString(aCommandName), aCommand);
1.48 +
1.49 + return NS_OK;
1.50 +}
1.51 +
1.52 +
1.53 +NS_IMETHODIMP
1.54 +nsControllerCommandTable::UnregisterCommand(const char * aCommandName, nsIControllerCommand *aCommand)
1.55 +{
1.56 + NS_ENSURE_TRUE(mMutable, NS_ERROR_FAILURE);
1.57 +
1.58 + nsDependentCString commandKey(aCommandName);
1.59 +
1.60 + if (!mCommandsTable.Get(commandKey, nullptr)) {
1.61 + return NS_ERROR_FAILURE;
1.62 + }
1.63 +
1.64 + mCommandsTable.Remove(commandKey);
1.65 + return NS_OK;
1.66 +}
1.67 +
1.68 +
1.69 +NS_IMETHODIMP
1.70 +nsControllerCommandTable::FindCommandHandler(const char * aCommandName, nsIControllerCommand **outCommand)
1.71 +{
1.72 + NS_ENSURE_ARG_POINTER(outCommand);
1.73 +
1.74 + *outCommand = nullptr;
1.75 +
1.76 + nsCOMPtr<nsIControllerCommand> foundCommand;
1.77 + mCommandsTable.Get(nsDependentCString(aCommandName), getter_AddRefs(foundCommand));
1.78 + if (!foundCommand) return NS_ERROR_FAILURE;
1.79 +
1.80 + foundCommand.forget(outCommand);
1.81 + return NS_OK;
1.82 +}
1.83 +
1.84 +
1.85 +
1.86 +/* boolean isCommandEnabled (in wstring command); */
1.87 +NS_IMETHODIMP
1.88 +nsControllerCommandTable::IsCommandEnabled(const char * aCommandName, nsISupports *aCommandRefCon, bool *aResult)
1.89 +{
1.90 + NS_ENSURE_ARG_POINTER(aResult);
1.91 +
1.92 + *aResult = false;
1.93 +
1.94 + // find the command
1.95 + nsCOMPtr<nsIControllerCommand> commandHandler;
1.96 + FindCommandHandler(aCommandName, getter_AddRefs(commandHandler));
1.97 + if (!commandHandler)
1.98 + {
1.99 +#if DEBUG
1.100 + NS_WARNING("Controller command table asked about a command that it does not handle -- ");
1.101 +#endif
1.102 + return NS_OK; // we don't handle this command
1.103 + }
1.104 +
1.105 + return commandHandler->IsCommandEnabled(aCommandName, aCommandRefCon, aResult);
1.106 +}
1.107 +
1.108 +
1.109 +NS_IMETHODIMP
1.110 +nsControllerCommandTable::UpdateCommandState(const char * aCommandName, nsISupports *aCommandRefCon)
1.111 +{
1.112 + // find the command
1.113 + nsCOMPtr<nsIControllerCommand> commandHandler;
1.114 + FindCommandHandler(aCommandName, getter_AddRefs(commandHandler));
1.115 + if (!commandHandler)
1.116 + {
1.117 +#if DEBUG
1.118 + NS_WARNING("Controller command table asked to update the state of a command that it does not handle -- ");
1.119 +#endif
1.120 + return NS_OK; // we don't handle this command
1.121 + }
1.122 +
1.123 + return NS_ERROR_NOT_IMPLEMENTED;
1.124 +}
1.125 +
1.126 +NS_IMETHODIMP
1.127 +nsControllerCommandTable::SupportsCommand(const char * aCommandName, nsISupports *aCommandRefCon, bool *aResult)
1.128 +{
1.129 + NS_ENSURE_ARG_POINTER(aResult);
1.130 +
1.131 + // XXX: need to check the readonly and disabled states
1.132 +
1.133 + *aResult = false;
1.134 +
1.135 + // find the command
1.136 + nsCOMPtr<nsIControllerCommand> commandHandler;
1.137 + FindCommandHandler(aCommandName, getter_AddRefs(commandHandler));
1.138 +
1.139 + *aResult = (commandHandler.get() != nullptr);
1.140 + return NS_OK;
1.141 +}
1.142 +
1.143 +/* void doCommand (in wstring command); */
1.144 +NS_IMETHODIMP
1.145 +nsControllerCommandTable::DoCommand(const char * aCommandName, nsISupports *aCommandRefCon)
1.146 +{
1.147 + // find the command
1.148 + nsCOMPtr<nsIControllerCommand> commandHandler;
1.149 + FindCommandHandler(aCommandName, getter_AddRefs(commandHandler));
1.150 + if (!commandHandler)
1.151 + {
1.152 +#if DEBUG
1.153 + NS_WARNING("Controller command table asked to do a command that it does not handle -- ");
1.154 +#endif
1.155 + return NS_OK; // we don't handle this command
1.156 + }
1.157 +
1.158 + return commandHandler->DoCommand(aCommandName, aCommandRefCon);
1.159 +}
1.160 +
1.161 +NS_IMETHODIMP
1.162 +nsControllerCommandTable::DoCommandParams(const char *aCommandName, nsICommandParams *aParams, nsISupports *aCommandRefCon)
1.163 +{
1.164 + // find the command
1.165 + nsCOMPtr<nsIControllerCommand> commandHandler;
1.166 + FindCommandHandler(aCommandName, getter_AddRefs(commandHandler));
1.167 + if (!commandHandler)
1.168 + {
1.169 +#if DEBUG
1.170 + NS_WARNING("Controller command table asked to do a command that it does not handle -- ");
1.171 +#endif
1.172 + return NS_OK; // we don't handle this command
1.173 + }
1.174 + return commandHandler->DoCommandParams(aCommandName, aParams, aCommandRefCon);
1.175 +}
1.176 +
1.177 +
1.178 +NS_IMETHODIMP
1.179 +nsControllerCommandTable::GetCommandState(const char *aCommandName, nsICommandParams *aParams, nsISupports *aCommandRefCon)
1.180 +{
1.181 + // find the command
1.182 + nsCOMPtr<nsIControllerCommand> commandHandler;
1.183 + FindCommandHandler(aCommandName, getter_AddRefs(commandHandler));
1.184 + if (!commandHandler)
1.185 + {
1.186 +#if DEBUG
1.187 + NS_WARNING("Controller command table asked to do a command that it does not handle -- ");
1.188 +#endif
1.189 + return NS_OK; // we don't handle this command
1.190 + }
1.191 + return commandHandler->GetCommandStateParams(aCommandName, aParams, aCommandRefCon);
1.192 +}
1.193 +
1.194 +
1.195 +nsresult
1.196 +NS_NewControllerCommandTable(nsIControllerCommandTable** aResult)
1.197 +{
1.198 + NS_PRECONDITION(aResult != nullptr, "null ptr");
1.199 + if (! aResult)
1.200 + return NS_ERROR_NULL_POINTER;
1.201 +
1.202 + nsControllerCommandTable* newCommandTable = new nsControllerCommandTable();
1.203 + if (! newCommandTable)
1.204 + return NS_ERROR_OUT_OF_MEMORY;
1.205 +
1.206 + NS_ADDREF(newCommandTable);
1.207 + *aResult = newCommandTable;
1.208 + return NS_OK;
1.209 +}
