michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim: set ts=2 et sw=2 tw=80: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "InterfaceInitFuncs.h"
michael@0: 
michael@0: #include "AccessibleWrap.h"
michael@0: #include "nsMai.h"
michael@0: 
michael@0: #include "mozilla/FloatingPoint.h"
michael@0: #include "mozilla/Likely.h"
michael@0: 
michael@0: using namespace mozilla;
michael@0: using namespace mozilla::a11y;
michael@0: 
michael@0: extern "C" {
michael@0: 
michael@0: static void
michael@0: getCurrentValueCB(AtkValue *obj, GValue *value)
michael@0: {
michael@0:   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(obj));
michael@0:   if (!accWrap)
michael@0:     return;
michael@0: 
michael@0:   memset (value,  0, sizeof (GValue));
michael@0:   double accValue = accWrap->CurValue();
michael@0:   if (IsNaN(accValue))
michael@0:     return;
michael@0: 
michael@0:   g_value_init (value, G_TYPE_DOUBLE);
michael@0:   g_value_set_double (value, accValue);
michael@0: }
michael@0: 
michael@0: static void
michael@0: getMaximumValueCB(AtkValue *obj, GValue *value)
michael@0: {
michael@0:   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(obj));
michael@0:   if (!accWrap)
michael@0:     return;
michael@0: 
michael@0:   memset(value,  0, sizeof (GValue));
michael@0:   double accValue = accWrap->MaxValue();
michael@0:   if (IsNaN(accValue))
michael@0:     return;
michael@0: 
michael@0:   g_value_init(value, G_TYPE_DOUBLE);
michael@0:   g_value_set_double(value, accValue);
michael@0: }
michael@0: 
michael@0: static void
michael@0: getMinimumValueCB(AtkValue *obj, GValue *value)
michael@0: {
michael@0:   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(obj));
michael@0:   if (!accWrap)
michael@0:     return;
michael@0: 
michael@0:   memset(value,  0, sizeof (GValue));
michael@0:   double accValue = accWrap->MinValue();
michael@0:   if (IsNaN(accValue))
michael@0:     return;
michael@0: 
michael@0:   g_value_init(value, G_TYPE_DOUBLE);
michael@0:   g_value_set_double(value, accValue);
michael@0: }
michael@0: 
michael@0: static void
michael@0: getMinimumIncrementCB(AtkValue *obj, GValue *minimumIncrement)
michael@0: {
michael@0:   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(obj));
michael@0:   if (!accWrap)
michael@0:     return;
michael@0: 
michael@0:   memset(minimumIncrement,  0, sizeof (GValue));
michael@0:   double accValue = accWrap->Step();
michael@0:   if (IsNaN(accValue))
michael@0:     accValue = 0; // zero if the minimum increment is undefined
michael@0: 
michael@0:   g_value_init(minimumIncrement, G_TYPE_DOUBLE);
michael@0:   g_value_set_double(minimumIncrement, accValue);
michael@0: }
michael@0: 
michael@0: static gboolean
michael@0: setCurrentValueCB(AtkValue *obj, const GValue *value)
michael@0: {
michael@0:   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(obj));
michael@0:   if (!accWrap)
michael@0:     return FALSE;
michael@0: 
michael@0:   double accValue =g_value_get_double(value);
michael@0:   return accWrap->SetCurValue(accValue);
michael@0: }
michael@0: }
michael@0: 
michael@0: void
michael@0: valueInterfaceInitCB(AtkValueIface* aIface)
michael@0: {
michael@0:   NS_ASSERTION(aIface, "Invalid aIface");
michael@0:   if (MOZ_UNLIKELY(!aIface))
michael@0:     return;
michael@0: 
michael@0:   aIface->get_current_value = getCurrentValueCB;
michael@0:   aIface->get_maximum_value = getMaximumValueCB;
michael@0:   aIface->get_minimum_value = getMinimumValueCB;
michael@0:   aIface->get_minimum_increment = getMinimumIncrementCB;
michael@0:   aIface->set_current_value = setCurrentValueCB;
michael@0: }