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nsMaiInterfaceValue.cpp
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nsMaiInterfaceValue.cpp
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/* -*- 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 "mozilla/Likely.h"
#include "AccessibleWrap.h"
#include "nsMai.h"
using namespace mozilla::a11y;
extern "C" {
static void
getCurrentValueCB(AtkValue *obj, GValue *value)
{
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(obj));
if (!accWrap)
return;
nsCOMPtr<nsIAccessibleValue> accValue;
accWrap->QueryInterface(NS_GET_IID(nsIAccessibleValue),
getter_AddRefs(accValue));
if (!accValue)
return;
memset (value, 0, sizeof (GValue));
double accDouble;
if (NS_FAILED(accValue->GetCurrentValue(&accDouble)))
return;
g_value_init (value, G_TYPE_DOUBLE);
g_value_set_double (value, accDouble);
}
static void
getMaximumValueCB(AtkValue *obj, GValue *value)
{
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(obj));
if (!accWrap)
return;
nsCOMPtr<nsIAccessibleValue> accValue;
accWrap->QueryInterface(NS_GET_IID(nsIAccessibleValue),
getter_AddRefs(accValue));
if (!accValue)
return;
memset (value, 0, sizeof (GValue));
double accDouble;
if (NS_FAILED(accValue->GetMaximumValue(&accDouble)))
return;
g_value_init (value, G_TYPE_DOUBLE);
g_value_set_double (value, accDouble);
}
static void
getMinimumValueCB(AtkValue *obj, GValue *value)
{
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(obj));
if (!accWrap)
return;
nsCOMPtr<nsIAccessibleValue> accValue;
accWrap->QueryInterface(NS_GET_IID(nsIAccessibleValue),
getter_AddRefs(accValue));
if (!accValue)
return;
memset (value, 0, sizeof (GValue));
double accDouble;
if (NS_FAILED(accValue->GetMinimumValue(&accDouble)))
return;
g_value_init (value, G_TYPE_DOUBLE);
g_value_set_double (value, accDouble);
}
static void
getMinimumIncrementCB(AtkValue *obj, GValue *minimumIncrement)
{
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(obj));
if (!accWrap)
return;
nsCOMPtr<nsIAccessibleValue> accValue;
accWrap->QueryInterface(NS_GET_IID(nsIAccessibleValue),
getter_AddRefs(accValue));
if (!accValue)
return;
memset (minimumIncrement, 0, sizeof (GValue));
double accDouble;
if (NS_FAILED(accValue->GetMinimumIncrement(&accDouble)))
return;
g_value_init (minimumIncrement, G_TYPE_DOUBLE);
g_value_set_double (minimumIncrement, accDouble);
}
static gboolean
setCurrentValueCB(AtkValue *obj, const GValue *value)
{
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(obj));
if (!accWrap)
return FALSE;
nsCOMPtr<nsIAccessibleValue> accValue;
accWrap->QueryInterface(NS_GET_IID(nsIAccessibleValue),
getter_AddRefs(accValue));
NS_ENSURE_TRUE(accValue, FALSE);
double accDouble =g_value_get_double (value);
return !NS_FAILED(accValue->SetCurrentValue(accDouble));
}
}
void
valueInterfaceInitCB(AtkValueIface* aIface)
{
NS_ASSERTION(aIface, "Invalid aIface");
if (MOZ_UNLIKELY(!aIface))
return;
aIface->get_current_value = getCurrentValueCB;
aIface->get_maximum_value = getMaximumValueCB;
aIface->get_minimum_value = getMinimumValueCB;
aIface->get_minimum_increment = getMinimumIncrementCB;
aIface->set_current_value = setCurrentValueCB;
}