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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 "AccessibleWrap.h"
#include "nsMai.h"
#include "RemoteAccessible.h"
#include "mozilla/FloatingPoint.h"
#include "mozilla/Likely.h"
using namespace mozilla;
using namespace mozilla::a11y;
extern "C" {
static void getCurrentValueCB(AtkValue* obj, GValue* value) {
Accessible* acc = GetInternalObj(ATK_OBJECT(obj));
if (!acc) {
return;
}
memset(value, 0, sizeof(GValue));
double accValue = acc->CurValue();
if (IsNaN(accValue)) return;
g_value_init(value, G_TYPE_DOUBLE);
g_value_set_double(value, accValue);
}
static void getMaximumValueCB(AtkValue* obj, GValue* value) {
Accessible* acc = GetInternalObj(ATK_OBJECT(obj));
if (!acc) {
return;
}
memset(value, 0, sizeof(GValue));
double accValue = acc->MaxValue();
if (IsNaN(accValue)) return;
g_value_init(value, G_TYPE_DOUBLE);
g_value_set_double(value, accValue);
}
static void getMinimumValueCB(AtkValue* obj, GValue* value) {
Accessible* acc = GetInternalObj(ATK_OBJECT(obj));
if (!acc) {
return;
}
memset(value, 0, sizeof(GValue));
double accValue = acc->MinValue();
if (IsNaN(accValue)) return;
g_value_init(value, G_TYPE_DOUBLE);
g_value_set_double(value, accValue);
}
static void getMinimumIncrementCB(AtkValue* obj, GValue* minimumIncrement) {
Accessible* acc = GetInternalObj(ATK_OBJECT(obj));
if (!acc) {
return;
}
memset(minimumIncrement, 0, sizeof(GValue));
double accValue = acc->Step();
if (IsNaN(accValue)) {
accValue = 0; // zero if the minimum increment is undefined
}
g_value_init(minimumIncrement, G_TYPE_DOUBLE);
g_value_set_double(minimumIncrement, accValue);
}
static gboolean setCurrentValueCB(AtkValue* obj, const GValue* value) {
RemoteAccessible* proxy = nullptr;
AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(obj));
if (!accWrap) {
proxy = GetProxy(ATK_OBJECT(obj));
if (!proxy) {
return FALSE;
}
}
double accValue = g_value_get_double(value);
return accWrap ? accWrap->SetCurValue(accValue)
: proxy->SetCurValue(accValue);
}
}
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;
}
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