accessible/atk/nsMaiInterfaceAction.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "InterfaceInitFuncs.h"
   8
   9 #include "LocalAccessible-inl.h"
  10 #include "nsMai.h"
  11 #include "Role.h"
  12 #include "mozilla/Likely.h"
  13 #include "RemoteAccessible.h"
  14 #include "nsString.h"
  15
  16 using namespace mozilla::a11y;
  17
  18 extern "C" {
  19
  20 static gboolean doActionCB(AtkAction* aAction, gint aActionIndex) {
  21   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aAction));
  22   if (accWrap) {
  23     return accWrap->DoAction(aActionIndex);
  24   }
  25
  26   RemoteAccessible* proxy = GetProxy(ATK_OBJECT(aAction));
  27   return proxy && proxy->DoAction(aActionIndex);
  28 }
  29
  30 static gint getActionCountCB(AtkAction* aAction) {
  31   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aAction));
  32   if (accWrap) {
  33     return accWrap->ActionCount();
  34   }
  35
  36   RemoteAccessible* proxy = GetProxy(ATK_OBJECT(aAction));
  37   return proxy ? proxy->ActionCount() : 0;
  38 }
  39
  40 static const gchar* getActionDescriptionCB(AtkAction* aAction,
  41                                            gint aActionIndex) {
  42   nsAutoString description;
  43   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aAction));
  44   if (accWrap) {
  45     accWrap->ActionDescriptionAt(aActionIndex, description);
  46   } else if (RemoteAccessible* proxy = GetProxy(ATK_OBJECT(aAction))) {
  47     proxy->ActionDescriptionAt(aActionIndex, description);
  48   } else {
  49     return nullptr;
  50   }
  51
  52   return AccessibleWrap::ReturnString(description);
  53 }
  54
  55 static const gchar* getActionNameCB(AtkAction* aAction, gint aActionIndex) {
  56   nsAutoString autoStr;
  57   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aAction));
  58   if (accWrap) {
  59     accWrap->ActionNameAt(aActionIndex, autoStr);
  60   } else if (RemoteAccessible* proxy = GetProxy(ATK_OBJECT(aAction))) {
  61     proxy->ActionNameAt(aActionIndex, autoStr);
  62   } else {
  63     return nullptr;
  64   }
  65
  66   return AccessibleWrap::ReturnString(autoStr);
  67 }
  68
  69 static const gchar* getKeyBindingCB(AtkAction* aAction, gint aActionIndex) {
  70   nsAutoString keyBindingsStr;
  71   AccessibleWrap* acc = GetAccessibleWrap(ATK_OBJECT(aAction));
  72   if (acc) {
  73     AccessibleWrap::GetKeyBinding(acc, keyBindingsStr);
  74   } else if (RemoteAccessible* proxy = GetProxy(ATK_OBJECT(aAction))) {
  75     proxy->AtkKeyBinding(keyBindingsStr);
  76   } else {
  77     return nullptr;
  78   }
  79
  80   return AccessibleWrap::ReturnString(keyBindingsStr);
  81 }
  82 }
  83
  84 void actionInterfaceInitCB(AtkActionIface* aIface) {
  85   NS_ASSERTION(aIface, "Invalid aIface");
  86   if (MOZ_UNLIKELY(!aIface)) return;
  87
  88   aIface->do_action = doActionCB;
  89   aIface->get_n_actions = getActionCountCB;
  90   aIface->get_description = getActionDescriptionCB;
  91   aIface->get_keybinding = getKeyBindingCB;
  92   aIface->get_name = getActionNameCB;
  93 }