зеркало из https://github.com/mozilla/gecko-dev.git
93 строки
3.1 KiB
C++
93 строки
3.1 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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// CTargetedUpdateMenuRegistry.cp
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//
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// CTargetedUpdateMenuRegistry is used in conjunction with LEventDispatchers
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// which are CTargetedUpdateMenuRegistry-aware to enable a more targeted
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// update of menus.
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//
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// One common example of this is menu items whose text should change when
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// certain modifiers are held down (Close -> Close All when optionKey is
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// held down, for example).
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//
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// Usage notes for callers of UpdateMenus:
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//
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// (1) Call SetCommands with a list of commands which should be updated.
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// (2) Call UpdateMenus.
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//
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// Usage notes for implementors of UpdateMenus:
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//
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// (1) When looping through commands in menus, determine if the registry
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// is active by calling UseRegistryToUpdateMenus.
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// (2) If the registry is active, then check to see if the command is
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// in the registry by calling CommandInRegistry before processing
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// command status for the command.
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//
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// Note: For the targeted update to be useful, there should generally be
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// a very small number of targeted commands. In fact, command lookup will
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// slow down if there are too many commands.
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#include "CTargetedUpdateMenuRegistry.h"
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// === Static Members ===
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Boolean CTargetedUpdateMenuRegistry::sUseRegistryToUpdateMenus = false;
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list<CommandT> CTargetedUpdateMenuRegistry::sCommands;
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// ---------------------------------------------------------------------------
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// <09> SetCommands
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// ---------------------------------------------------------------------------
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void
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CTargetedUpdateMenuRegistry::SetCommands(
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const list<CommandT>& inCommands)
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{
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sCommands = inCommands;
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}
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// ---------------------------------------------------------------------------
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// <09> UpdateMenus
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// ---------------------------------------------------------------------------
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void
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CTargetedUpdateMenuRegistry::UpdateMenus()
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{
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if (LEventDispatcher::GetCurrentEventDispatcher())
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{
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StValueChanger<Boolean> setUseRegistryToUpdateMenus(sUseRegistryToUpdateMenus, true);
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LEventDispatcher::GetCurrentEventDispatcher()->UpdateMenus();
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}
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}
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// ---------------------------------------------------------------------------
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// <09> CommandInRegistry
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// ---------------------------------------------------------------------------
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Boolean
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CTargetedUpdateMenuRegistry::CommandInRegistry(CommandT inCommand)
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{
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list<CommandT>::const_iterator theCommand = find(
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sCommands.begin(),
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sCommands.end(),
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inCommand);
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return (theCommand != sCommands.end());
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}
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