gecko-dev/accessible/atk/nsMaiInterfaceAction.cpp

124 строки
3.5 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=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 "InterfaceInitFuncs.h"
#include "Accessible-inl.h"
#include "nsMai.h"
#include "Role.h"
#include "mozilla/Likely.h"
#include "nsString.h"
using namespace mozilla::a11y;
extern "C" {
static gboolean
doActionCB(AtkAction *aAction, gint aActionIndex)
{
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aAction));
return accWrap && accWrap->DoAction(aActionIndex);
}
static gint
getActionCountCB(AtkAction *aAction)
{
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aAction));
return accWrap ? accWrap->ActionCount() : 0;
}
static const gchar*
getActionDescriptionCB(AtkAction *aAction, gint aActionIndex)
{
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aAction));
if (!accWrap)
return nullptr;
nsAutoString description;
nsresult rv = accWrap->GetActionDescription(aActionIndex, description);
NS_ENSURE_SUCCESS(rv, nullptr);
return AccessibleWrap::ReturnString(description);
}
static const gchar*
getActionNameCB(AtkAction *aAction, gint aActionIndex)
{
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aAction));
if (!accWrap)
return nullptr;
nsAutoString autoStr;
accWrap->ActionNameAt(aActionIndex, autoStr);
return AccessibleWrap::ReturnString(autoStr);
}
static const gchar*
getKeyBindingCB(AtkAction *aAction, gint aActionIndex)
{
AccessibleWrap* acc = GetAccessibleWrap(ATK_OBJECT(aAction));
if (!acc)
return nullptr;
// Return all key bindings including access key and keyboard shortcut.
nsAutoString keyBindingsStr;
// Get access key.
KeyBinding keyBinding = acc->AccessKey();
if (!keyBinding.IsEmpty()) {
keyBinding.AppendToString(keyBindingsStr, KeyBinding::eAtkFormat);
Accessible* parent = acc->Parent();
roles::Role role = parent ? parent->Role() : roles::NOTHING;
if (role == roles::PARENT_MENUITEM || role == roles::MENUITEM ||
role == roles::RADIO_MENU_ITEM || role == roles::CHECK_MENU_ITEM) {
// It is submenu, expose keyboard shortcuts from menu hierarchy like
// "s;<Alt>f:s"
nsAutoString keysInHierarchyStr = keyBindingsStr;
do {
KeyBinding parentKeyBinding = parent->AccessKey();
if (!parentKeyBinding.IsEmpty()) {
nsAutoString str;
parentKeyBinding.ToString(str, KeyBinding::eAtkFormat);
str.Append(':');
keysInHierarchyStr.Insert(str, 0);
}
} while ((parent = parent->Parent()) && parent->Role() != roles::MENUBAR);
keyBindingsStr.Append(';');
keyBindingsStr.Append(keysInHierarchyStr);
}
} else {
// No access key, add ';' to point this.
keyBindingsStr.Append(';');
}
// Get keyboard shortcut.
keyBindingsStr.Append(';');
keyBinding = acc->KeyboardShortcut();
if (!keyBinding.IsEmpty()) {
keyBinding.AppendToString(keyBindingsStr, KeyBinding::eAtkFormat);
}
return AccessibleWrap::ReturnString(keyBindingsStr);
}
}
void
actionInterfaceInitCB(AtkActionIface* aIface)
{
NS_ASSERTION(aIface, "Invalid aIface");
if (MOZ_UNLIKELY(!aIface))
return;
aIface->do_action = doActionCB;
aIface->get_n_actions = getActionCountCB;
aIface->get_description = getActionDescriptionCB;
aIface->get_keybinding = getKeyBindingCB;
aIface->get_name = getActionNameCB;
}