accessible/xpcom/xpcAccessibleValue.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 file,
   5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "xpcAccessibleGeneric.h"
   8 #include "LocalAccessible.h"
   9 #include "LocalAccessible-inl.h"
  10
  11 using namespace mozilla;
  12 using namespace mozilla::a11y;
  13
  14 NS_IMETHODIMP
  15 xpcAccessibleValue::GetMaximumValue(double* aValue) {
  16   NS_ENSURE_ARG_POINTER(aValue);
  17   *aValue = 0;
  18
  19   if (!Intl()) return NS_ERROR_FAILURE;
  20
  21   if (Intl()->IsLocal() && Intl()->AsLocal()->IsDefunct()) {
  22     return NS_ERROR_FAILURE;
  23   }
  24
  25   double value = Intl()->MaxValue();
  26
  27   if (!std::isnan(value)) *aValue = value;
  28
  29   return NS_OK;
  30 }
  31
  32 NS_IMETHODIMP
  33 xpcAccessibleValue::GetMinimumValue(double* aValue) {
  34   NS_ENSURE_ARG_POINTER(aValue);
  35   *aValue = 0;
  36
  37   if (!Intl()) return NS_ERROR_FAILURE;
  38
  39   if (Intl()->IsLocal() && Intl()->AsLocal()->IsDefunct()) {
  40     return NS_ERROR_FAILURE;
  41   }
  42
  43   double value = Intl()->MinValue();
  44
  45   if (!std::isnan(value)) *aValue = value;
  46
  47   return NS_OK;
  48 }
  49
  50 NS_IMETHODIMP
  51 xpcAccessibleValue::GetCurrentValue(double* aValue) {
  52   NS_ENSURE_ARG_POINTER(aValue);
  53   *aValue = 0;
  54
  55   if (!Intl()) return NS_ERROR_FAILURE;
  56
  57   if (Intl()->IsLocal() && Intl()->AsLocal()->IsDefunct()) {
  58     return NS_ERROR_FAILURE;
  59   }
  60
  61   double value = Intl()->CurValue();
  62
  63   if (!std::isnan(value)) *aValue = value;
  64
  65   return NS_OK;
  66 }
  67
  68 NS_IMETHODIMP
  69 xpcAccessibleValue::SetCurrentValue(double aValue) {
  70   if (!Intl()) return NS_ERROR_FAILURE;
  71
  72   if (Intl()->IsLocal() && Intl()->AsLocal()->IsDefunct()) {
  73     return NS_ERROR_FAILURE;
  74   }
  75
  76   if (!Intl()->SetCurValue(aValue)) {
  77     return NS_ERROR_FAILURE;
  78   }
  79
  80   return NS_OK;
  81 }
  82
  83 NS_IMETHODIMP
  84 xpcAccessibleValue::GetMinimumIncrement(double* aValue) {
  85   NS_ENSURE_ARG_POINTER(aValue);
  86   *aValue = 0;
  87
  88   if (!Intl()) return NS_ERROR_FAILURE;
  89
  90   if (Intl()->IsLocal() && Intl()->AsLocal()->IsDefunct()) {
  91     return NS_ERROR_FAILURE;
  92   }
  93
  94   double value = Intl()->Step();
  95
  96   if (!std::isnan(value)) *aValue = value;
  97
  98   return NS_OK;
  99 }