vcl/unx/gtk3/a11y/gtk3atkselection.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 "atkwrapper.hxx"
  21
  22 #include <com/sun/star/accessibility/XAccessibleSelection.hpp>
  23
  24 using namespace ::com::sun::star;
  25
  26 /// @throws uno::RuntimeException
  27 static css::uno::Reference<css::accessibility::XAccessibleSelection>
  28     getSelection( AtkSelection *pSelection )
  29 {
  30     AtkObjectWrapper *pWrap = ATK_OBJECT_WRAPPER( pSelection );
  31     if( pWrap )
  32     {
  33         if( !pWrap->mpSelection.is() )
  34         {
  35             pWrap->mpSelection.set(pWrap->mpContext, css::uno::UNO_QUERY);
  36         }
  37
  38         return pWrap->mpSelection;
  39     }
  40
  41     return css::uno::Reference<css::accessibility::XAccessibleSelection>();
  42 }
  43
  44 extern "C" {
  45
  46 static gboolean
  47 selection_add_selection( AtkSelection *selection,
  48                          gint          i )
  49 {
  50     try {
  51         css::uno::Reference<css::accessibility::XAccessibleSelection> pSelection
  52             = getSelection( selection );
  53         if( pSelection.is() )
  54         {
  55             pSelection->selectAccessibleChild( i );
  56             return true;
  57         }
  58     }
  59     catch(const uno::Exception&) {
  60         g_warning( "Exception in selectAccessibleChild()" );
  61     }
  62
  63     return FALSE;
  64 }
  65
  66 static gboolean
  67 selection_clear_selection( AtkSelection *selection )
  68 {
  69     try {
  70         css::uno::Reference<css::accessibility::XAccessibleSelection> pSelection
  71             = getSelection( selection );
  72         if( pSelection.is() )
  73         {
  74             pSelection->clearAccessibleSelection();
  75             return true;
  76         }
  77     }
  78     catch(const uno::Exception&) {
  79         g_warning( "Exception in selectAccessibleChild()" );
  80     }
  81
  82     return FALSE;
  83 }
  84
  85 static AtkObject*
  86 selection_ref_selection( AtkSelection *selection,
  87                          gint          i )
  88 {
  89     try {
  90         css::uno::Reference<css::accessibility::XAccessibleSelection> pSelection
  91             = getSelection( selection );
  92         if( pSelection.is() )
  93             return atk_object_wrapper_ref( pSelection->getSelectedAccessibleChild( i ) );
  94     }
  95     catch(const uno::Exception&) {
  96         g_warning( "Exception in getSelectedAccessibleChild()" );
  97     }
  98
  99     return nullptr;
 100 }
 101
 102 static gint
 103 selection_get_selection_count( AtkSelection   *selection)
 104 {
 105     try {
 106         css::uno::Reference<css::accessibility::XAccessibleSelection> pSelection
 107             = getSelection( selection );
 108         if( pSelection.is() )
 109             return pSelection->getSelectedAccessibleChildCount();
 110     }
 111     catch(const uno::Exception&) {
 112         g_warning( "Exception in getSelectedAccessibleChildCount()" );
 113     }
 114
 115     return -1;
 116 }
 117
 118 static gboolean
 119 selection_is_child_selected( AtkSelection   *selection,
 120                               gint           i)
 121 {
 122     try {
 123         css::uno::Reference<css::accessibility::XAccessibleSelection> pSelection
 124             = getSelection( selection );
 125         if( pSelection.is() )
 126             return pSelection->isAccessibleChildSelected( i );
 127     }
 128     catch(const uno::Exception&) {
 129         g_warning( "Exception in getSelectedAccessibleChildCount()" );
 130     }
 131
 132     return FALSE;
 133 }
 134
 135 static gboolean
 136 selection_remove_selection( AtkSelection *selection,
 137                             gint           i )
 138 {
 139     try {
 140         css::uno::Reference<css::accessibility::XAccessibleSelection> pSelection
 141             = getSelection( selection );
 142         if( pSelection.is() )
 143         {
 144             pSelection->deselectAccessibleChild( i );
 145             return true;
 146         }
 147     }
 148     catch(const uno::Exception&) {
 149         g_warning( "Exception in getSelectedAccessibleChildCount()" );
 150     }
 151
 152     return FALSE;
 153 }
 154
 155 static gboolean
 156 selection_select_all_selection( AtkSelection   *selection)
 157 {
 158     try {
 159         css::uno::Reference<css::accessibility::XAccessibleSelection> pSelection
 160             = getSelection( selection );
 161         if( pSelection.is() )
 162         {
 163             pSelection->selectAllAccessibleChildren();
 164             return true;
 165         }
 166     }
 167     catch(const uno::Exception&) {
 168         g_warning( "Exception in getSelectedAccessibleChildCount()" );
 169     }
 170
 171     return FALSE;
 172 }
 173
 174 } // extern "C"
 175
 176 void
 177 selectionIfaceInit( AtkSelectionIface *iface)
 178 {
 179   g_return_if_fail (iface != nullptr);
 180
 181   iface->add_selection = selection_add_selection;
 182   iface->clear_selection = selection_clear_selection;
 183   iface->ref_selection = selection_ref_selection;
 184   iface->get_selection_count = selection_get_selection_count;
 185   iface->is_child_selected = selection_is_child_selected;
 186   iface->remove_selection = selection_remove_selection;
 187   iface->select_all_selection = selection_select_all_selection;
 188 }
 189
 190 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */