vcl/osx/a11ylistener.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include "osx/salinst.h"
  21 #include "osx/a11ylistener.hxx"
  22 #include "osx/a11yfactory.h"
  23 #include "osx/a11yfocustracker.hxx"
  24 #include "osx/a11ywrapper.h"
  25
  26 #include "a11ytextwrapper.h"
  27
  28 #include <com/sun/star/accessibility/AccessibleEventId.hpp>
  29 #include <com/sun/star/accessibility/AccessibleRole.hpp>
  30 #include <com/sun/star/accessibility/AccessibleTableModelChange.hpp>
  31 #include <com/sun/star/accessibility/AccessibleTableModelChangeType.hpp>
  32
  33 using namespace ::com::sun::star::accessibility;
  34 using namespace ::com::sun::star::awt;
  35 using namespace ::com::sun::star::lang;
  36 using namespace ::com::sun::star::uno;
  37
  38 NSString * getTableNotification( const AccessibleEventObject& aEvent )
  39 {
  40     AccessibleTableModelChange aChange;
  41     NSString * notification = nil;
  42
  43     if( (aEvent.NewValue >>= aChange) &&
  44         ( AccessibleTableModelChangeType::INSERT == aChange.Type || AccessibleTableModelChangeType::DELETE == aChange.Type ) &&
  45         aChange.FirstRow != aChange.LastRow )
  46     {
  47         notification = NSAccessibilityRowCountChangedNotification;
  48     }
  49
  50     return notification;
  51 }
  52
  53 AquaA11yEventListener::AquaA11yEventListener(id wrapperObject, sal_Int16 role) : m_wrapperObject(wrapperObject), m_role(role)
  54 {
  55     [ m_wrapperObject retain ];
  56 }
  57
  58 AquaA11yEventListener::~AquaA11yEventListener()
  59 {
  60     [ m_wrapperObject release ];
  61 }
  62
  63 void SAL_CALL
  64 AquaA11yEventListener::disposing( const EventObject& ) throw( RuntimeException, std::exception )
  65 {
  66     [ AquaA11yFactory removeFromWrapperRepositoryFor: [ (AquaA11yWrapper *) m_wrapperObject accessibleContext ] ];
  67 }
  68
  69 void SAL_CALL
  70 AquaA11yEventListener::notifyEvent( const AccessibleEventObject& aEvent ) throw( RuntimeException, std::exception )
  71 {
  72     NSString * notification = nil;
  73     id element = m_wrapperObject;
  74     ::css::awt::Rectangle bounds;
  75
  76     // TODO: NSAccessibilityValueChanged, NSAccessibilitySelectedRowsChangedNotification
  77     switch( aEvent.EventId )
  78     {
  79         case AccessibleEventId::ACTIVE_DESCENDANT_CHANGED:
  80             if( m_role != AccessibleRole::LIST ) {
  81                 Reference< XAccessible > xAccessible;
  82                 if( aEvent.NewValue >>= xAccessible )
  83                     AquaA11yFocusTracker::get().setFocusedObject( xAccessible );
  84             }
  85             break;
  86
  87         case AccessibleEventId::NAME_CHANGED:
  88             notification = NSAccessibilityTitleChangedNotification;
  89             break;
  90
  91         case AccessibleEventId::CHILD:
  92             // only needed for tooltips (says Apple)
  93             if ( m_role == AccessibleRole::TOOL_TIP ) {
  94                 if(aEvent.NewValue.hasValue()) {
  95                     notification = NSAccessibilityCreatedNotification;
  96                 } else if(aEvent.OldValue.hasValue()) {
  97                     notification = NSAccessibilityUIElementDestroyedNotification;
  98                 }
  99             }
 100             break;
 101
 102         case AccessibleEventId::INVALIDATE_ALL_CHILDREN:
 103             // TODO: depricate or remember all children
 104             break;
 105
 106         case AccessibleEventId::BOUNDRECT_CHANGED:
 107             bounds = [ element accessibleComponent ] -> getBounds();
 108             if ( m_oldBounds.X != 0 && ( bounds.X != m_oldBounds.X || bounds.Y != m_oldBounds.Y ) ) {
 109                 NSAccessibilityPostNotification(element, NSAccessibilityMovedNotification); // post directly since both cases can happen simultaneously
 110             }
 111             if ( m_oldBounds.X != 0 && ( bounds.Width != m_oldBounds.Width || bounds.Height != m_oldBounds.Height ) ) {
 112                 NSAccessibilityPostNotification(element, NSAccessibilityResizedNotification); // post directly since both cases can happen simultaneously
 113             }
 114             m_oldBounds = bounds;
 115             break;
 116
 117         case AccessibleEventId::SELECTION_CHANGED:
 118             notification = NSAccessibilitySelectedChildrenChangedNotification;
 119             break;
 120
 121         case AccessibleEventId::TEXT_SELECTION_CHANGED:
 122             notification = NSAccessibilitySelectedTextChangedNotification;
 123             break;
 124
 125         case AccessibleEventId::TABLE_MODEL_CHANGED:
 126             notification = getTableNotification(aEvent);
 127             break;
 128
 129         case AccessibleEventId::CARET_CHANGED:
 130             notification = NSAccessibilitySelectedTextChangedNotification;
 131             break;
 132
 133         case AccessibleEventId::TEXT_CHANGED:
 134             notification = NSAccessibilityValueChangedNotification;
 135             break;
 136
 137         default:
 138             break;
 139     }
 140
 141     if( nil != notification )
 142         NSAccessibilityPostNotification(element, notification);
 143 }
 144
 145 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */