accessible/atk/nsMaiInterfaceSelection.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 "AccessibleWrap.h"
  11 #include "nsMai.h"
  12 #include "mozilla/Likely.h"
  13
  14 #include <atk/atkobject.h>
  15 #include <atk/atkselection.h>
  16
  17 using namespace mozilla::a11y;
  18
  19 extern "C" {
  20
  21 static gboolean addSelectionCB(AtkSelection* aSelection, gint i) {
  22   Accessible* acc = GetInternalObj(ATK_OBJECT(aSelection));
  23   if (acc && acc->IsSelect()) {
  24     return acc->AddItemToSelection(i);
  25   }
  26
  27   return FALSE;
  28 }
  29
  30 static gboolean clearSelectionCB(AtkSelection* aSelection) {
  31   Accessible* acc = GetInternalObj(ATK_OBJECT(aSelection));
  32   if (acc && acc->IsSelect()) {
  33     return acc->UnselectAll();
  34   }
  35
  36   return FALSE;
  37 }
  38
  39 static AtkObject* refSelectionCB(AtkSelection* aSelection, gint i) {
  40   AtkObject* atkObj = nullptr;
  41   Accessible* acc = GetInternalObj(ATK_OBJECT(aSelection));
  42   Accessible* selectedItem = acc->GetSelectedItem(i);
  43   if (selectedItem) {
  44     atkObj = GetWrapperFor(selectedItem);
  45   }
  46
  47   if (atkObj) {
  48     g_object_ref(atkObj);
  49   }
  50
  51   return atkObj;
  52 }
  53
  54 static gint getSelectionCountCB(AtkSelection* aSelection) {
  55   Accessible* acc = GetInternalObj(ATK_OBJECT(aSelection));
  56   if (acc && acc->IsSelect()) {
  57     return acc->SelectedItemCount();
  58   }
  59
  60   return -1;
  61 }
  62
  63 static gboolean isChildSelectedCB(AtkSelection* aSelection, gint i) {
  64   Accessible* acc = GetInternalObj(ATK_OBJECT(aSelection));
  65   if (acc && acc->IsSelect()) {
  66     return acc->IsItemSelected(i);
  67   }
  68
  69   return FALSE;
  70 }
  71
  72 static gboolean removeSelectionCB(AtkSelection* aSelection, gint i) {
  73   Accessible* acc = GetInternalObj(ATK_OBJECT(aSelection));
  74   if (acc && acc->IsSelect()) {
  75     return acc->RemoveItemFromSelection(i);
  76   }
  77
  78   return FALSE;
  79 }
  80
  81 static gboolean selectAllSelectionCB(AtkSelection* aSelection) {
  82   Accessible* acc = GetInternalObj(ATK_OBJECT(aSelection));
  83   if (acc && acc->IsSelect()) {
  84     return acc->SelectAll();
  85   }
  86
  87   return FALSE;
  88 }
  89 }
  90
  91 void selectionInterfaceInitCB(AtkSelectionIface* aIface) {
  92   NS_ASSERTION(aIface, "Invalid aIface");
  93   if (MOZ_UNLIKELY(!aIface)) return;
  94
  95   aIface->add_selection = addSelectionCB;
  96   aIface->clear_selection = clearSelectionCB;
  97   aIface->ref_selection = refSelectionCB;
  98   aIface->get_selection_count = getSelectionCountCB;
  99   aIface->is_child_selected = isChildSelectedCB;
 100   aIface->remove_selection = removeSelectionCB;
 101   aIface->select_all_selection = selectAllSelectionCB;
 102 }