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bug 151139, support nsIAccessibleValue in MAI (Mozilla ATK Implementation), patch=silvia.zhao, r=aaronl, this is for mozilla accessibility on unix, not a part of default build.
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jay.yan%sun.com
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214
widget/src/gtk2/mai/nsMaiInterfaceValue.cpp
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214
widget/src/gtk2/mai/nsMaiInterfaceValue.cpp
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* vim:expandtab:shiftwidth=4:tabstop=4:
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*/
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Sun Microsystems, Inc.
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* Portions created by Sun Microsystems are Copyright (C) 2002 Sun
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* Microsystems, Inc. All Rights Reserved.
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*
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* Original Author: Silvia Zhao (silvia.zhao@sun.com)
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsMaiInterfaceValue.h"
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#include "nsIAccessibleValue.h"
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/* helpers */
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static MaiInterfaceValue *getValue(AtkValue *aIface);
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G_BEGIN_DECLS
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/*value interface callbacks*/
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static void interfaceInitCB(AtkValueIface *aIface);
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static void getCurrentValueCB(AtkValue *obj,
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GValue *value);
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static void getMaximumValueCB(AtkValue *obj,
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GValue *value);
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static void getMinimumValueCB(AtkValue *obj,
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GValue *value);
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static gboolean setCurrentValueCB(AtkValue *obj,
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const GValue *value);
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G_END_DECLS
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MaiInterfaceValue::MaiInterfaceValue(MaiWidget *aMaiWidget):
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MaiInterface(aMaiWidget)
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{
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}
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MaiInterfaceValue::~MaiInterfaceValue()
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{
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}
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MaiInterfaceType
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MaiInterfaceValue::GetType()
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{
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return MAI_INTERFACE_VALUE;
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}
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const GInterfaceInfo *
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MaiInterfaceValue::GetInterfaceInfo()
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{
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static const GInterfaceInfo atk_if_value_info = {
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(GInterfaceInitFunc) interfaceInitCB,
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(GInterfaceFinalizeFunc) NULL,
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NULL
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};
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return &atk_if_value_info;
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}
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#define MAI_IFACE_RETURN_VAL_IF_FAIL(accessIface, retvalue) \
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nsIAccessible *tmpAccess = GetNSAccessible(); \
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nsCOMPtr<nsIAccessibleValue> \
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accessIface(do_QueryInterface(tmpAccess)); \
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if (!(accessIface)) \
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return (retvalue)
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#define MAI_IFACE_RETURN_IF_FAIL(accessIface) \
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nsIAccessible *tmpAccess = GetNSAccessible(); \
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nsCOMPtr<nsIAccessibleValue> \
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accessIface(do_QueryInterface(tmpAccess)); \
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if (!(accessIface)) \
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return
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void
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MaiInterfaceValue::GetCurrentValue(GValue *value)
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{
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memset (value, 0, sizeof (GValue));
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MAI_IFACE_RETURN_IF_FAIL(accessInterfaceValue);
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double accValue;
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if (NS_FAILED(accessInterfaceValue->GetCurrentValue(&accValue)))
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return;
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g_value_init (value, G_TYPE_DOUBLE);
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g_value_set_double (value, accValue);
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}
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void
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MaiInterfaceValue::GetMaximumValue(GValue *value)
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{
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memset (value, 0, sizeof (GValue));
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MAI_IFACE_RETURN_IF_FAIL(accessInterfaceValue);
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double accValue;
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if (NS_FAILED(accessInterfaceValue->GetMaximumValue(&accValue)))
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return;
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g_value_init (value, G_TYPE_DOUBLE);
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g_value_set_double (value, accValue);
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}
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void
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MaiInterfaceValue::GetMinimumValue(GValue *value)
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{
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memset (value, 0, sizeof (GValue));
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MAI_IFACE_RETURN_IF_FAIL(accessInterfaceValue);
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double accValue;
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if (NS_FAILED(accessInterfaceValue->GetMinimumValue(&accValue)))
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return;
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g_value_init (value, G_TYPE_DOUBLE);
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g_value_set_double (value, accValue);
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}
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gboolean
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MaiInterfaceValue::SetCurrentValue(const GValue *value)
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{
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MAI_IFACE_RETURN_VAL_IF_FAIL(accessInterfaceValue, FALSE);
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PRBool aBool;
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double aValue;
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aValue = g_value_get_double (value);
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accessInterfaceValue->SetCurrentValue(aValue, &aBool);
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return aBool;
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}
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/* static functions */
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/* do general checking for callbacks functions
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* return the MaiInterfaceValue extracted from atk value
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*/
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MaiInterfaceValue *getValue(AtkValue *atkValue)
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{
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MAI_CHECK_ATK_OBJECT_RETURN_VAL_IF_FAIL(atkValue, NULL);
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g_return_val_if_fail(MAI_IS_ATK_WIDGET(atkValue), NULL);
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MaiWidget *maiWidget =
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NS_STATIC_CAST(MaiWidget*, (MAI_ATK_OBJECT(atkValue)->maiObject));
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MaiInterfaceValue *maiInterfaceValue =
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NS_STATIC_CAST(MaiInterfaceValue*,
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maiWidget->GetMaiInterface(MAI_INTERFACE_VALUE));
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return maiInterfaceValue;
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}
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void
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interfaceInitCB(AtkValueIface *aIface)
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{
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g_return_if_fail(aIface != NULL);
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aIface->get_current_value = getCurrentValueCB;
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aIface->get_maximum_value = getMaximumValueCB;
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aIface->get_minimum_value = getMinimumValueCB;
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aIface->set_current_value = setCurrentValueCB;
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}
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void
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getCurrentValueCB(AtkValue *obj, GValue *value)
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{
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MaiInterfaceValue *maiInterfaceValue = getValue(obj);
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if (maiInterfaceValue)
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maiInterfaceValue->GetCurrentValue(value);
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}
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void
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getMaximumValueCB(AtkValue *obj, GValue *value)
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{
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MaiInterfaceValue *maiInterfaceValue = getValue(obj);
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if (maiInterfaceValue)
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maiInterfaceValue->GetMaximumValue(value);
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}
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void
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getMinimumValueCB(AtkValue *obj, GValue *value)
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{
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MaiInterfaceValue *maiInterfaceValue = getValue(obj);
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if (maiInterfaceValue)
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maiInterfaceValue->GetMinimumValue(value);
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}
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gboolean
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setCurrentValueCB(AtkValue *obj, const GValue *value)
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{
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MaiInterfaceValue *maiInterfaceValue = getValue(obj);
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if (!maiInterfaceValue)
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return FALSE;
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return maiInterfaceValue->SetCurrentValue(value);
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}
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64
widget/src/gtk2/mai/nsMaiInterfaceValue.h
Normal file
64
widget/src/gtk2/mai/nsMaiInterfaceValue.h
Normal file
@ -0,0 +1,64 @@
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* vim:expandtab:shiftwidth=4:tabstop=4:
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*/
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Sun Microsystems, Inc.
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* Portions created by Sun Microsystems are Copyright (C) 2002 Sun
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* Microsystems, Inc. All Rights Reserved.
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*
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* Original Author: Silvia Zhao (silvia.zhao@sun.com)
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
|
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef __MAI_INTERFACE_VALUE_H__
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#define __MAI_INTERFACE_VALUE_H__
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#include "nsMaiWidget.h"
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class MaiInterfaceValue: public MaiInterface
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{
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public:
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MaiInterfaceValue(MaiWidget*);
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~MaiInterfaceValue();
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virtual MaiInterfaceType GetType();
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virtual const GInterfaceInfo *GetInterfaceInfo();
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public:
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void GetCurrentValue(GValue *value);
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void GetMaximumValue(GValue *value);
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void GetMinimumValue(GValue *value);
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gboolean SetCurrentValue(const GValue *value);
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};
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#endif /* __MAI_INTERFACE_VALUE_H__ */
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