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 "Accessible.h"
   9
  10 using namespace mozilla;
  11 using namespace mozilla::a11y;
  12
  13 NS_IMETHODIMP
  14 xpcAccessibleValue::GetMaximumValue(double* aValue) {
  15   NS_ENSURE_ARG_POINTER(aValue);
  16   *aValue = 0;
  17
  18   if (Intl().IsNull()) return NS_ERROR_FAILURE;
  19
  20   if (Intl().IsAccessible() && Intl().AsAccessible()->IsDefunct())
  21     return NS_ERROR_FAILURE;
  22
  23   double value;
  24   if (Intl().IsAccessible()) {
  25     value = Intl().AsAccessible()->MaxValue();
  26   } else {
  27     value = Intl().AsProxy()->MaxValue();
  28   }
  29
  30   if (!IsNaN(value)) *aValue = value;
  31
  32   return NS_OK;
  33 }
  34
  35 NS_IMETHODIMP
  36 xpcAccessibleValue::GetMinimumValue(double* aValue) {
  37   NS_ENSURE_ARG_POINTER(aValue);
  38   *aValue = 0;
  39
  40   if (Intl().IsNull()) return NS_ERROR_FAILURE;
  41
  42   if (Intl().IsAccessible() && Intl().AsAccessible()->IsDefunct())
  43     return NS_ERROR_FAILURE;
  44
  45   double value;
  46   if (Intl().IsAccessible()) {
  47     value = Intl().AsAccessible()->MinValue();
  48   } else {
  49     value = Intl().AsProxy()->MinValue();
  50   }
  51
  52   if (!IsNaN(value)) *aValue = value;
  53
  54   return NS_OK;
  55 }
  56
  57 NS_IMETHODIMP
  58 xpcAccessibleValue::GetCurrentValue(double* aValue) {
  59   NS_ENSURE_ARG_POINTER(aValue);
  60   *aValue = 0;
  61
  62   if (Intl().IsNull()) return NS_ERROR_FAILURE;
  63
  64   if (Intl().IsAccessible() && Intl().AsAccessible()->IsDefunct())
  65     return NS_ERROR_FAILURE;
  66
  67   double value;
  68   if (Intl().IsAccessible()) {
  69     value = Intl().AsAccessible()->CurValue();
  70   } else {
  71     value = Intl().AsProxy()->CurValue();
  72   }
  73
  74   if (!IsNaN(value)) *aValue = value;
  75
  76   return NS_OK;
  77 }
  78
  79 NS_IMETHODIMP
  80 xpcAccessibleValue::SetCurrentValue(double aValue) {
  81   if (Intl().IsNull()) return NS_ERROR_FAILURE;
  82
  83   if (Intl().IsAccessible() && Intl().AsAccessible()->IsDefunct())
  84     return NS_ERROR_FAILURE;
  85
  86   if (Intl().IsAccessible()) {
  87     Intl().AsAccessible()->SetCurValue(aValue);
  88   } else {
  89     Intl().AsProxy()->SetCurValue(aValue);
  90   }
  91
  92   return NS_OK;
  93 }
  94
  95 NS_IMETHODIMP
  96 xpcAccessibleValue::GetMinimumIncrement(double* aValue) {
  97   NS_ENSURE_ARG_POINTER(aValue);
  98   *aValue = 0;
  99
 100   if (Intl().IsNull()) return NS_ERROR_FAILURE;
 101
 102   if (Intl().IsAccessible() && Intl().AsAccessible()->IsDefunct())
 103     return NS_ERROR_FAILURE;
 104
 105   double value;
 106   if (Intl().IsAccessible()) {
 107     value = Intl().AsAccessible()->Step();
 108   } else {
 109     value = Intl().AsProxy()->Step();
 110   }
 111
 112   if (!IsNaN(value)) *aValue = value;
 113
 114   return NS_OK;
 115 }