vcl/source/window/accmgr.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.
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   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
  21 #include <accel.h>
  22 #include <vcl/accel.hxx>
  23 #include <accmgr.hxx>
  24
  25 #include <algorithm>
  26
  27 ImplAccelManager::~ImplAccelManager()
  28 {
  29 }
  30
  31 bool ImplAccelManager::InsertAccel( Accelerator* pAccel )
  32 {
  33     if ( !mpAccelList ) {
  34         mpAccelList.reset( new std::vector< Accelerator* > );
  35     } else {
  36         for (Accelerator* i : *mpAccelList) {
  37             if ( i == pAccel ) {
  38                 return false;
  39             }
  40         }
  41     }
  42
  43     mpAccelList->insert( mpAccelList->begin(), pAccel );
  44     return true;
  45 }
  46
  47 void ImplAccelManager::RemoveAccel( Accelerator const * pAccel )
  48 {
  49     // do we have a list ?
  50     if ( !mpAccelList )
  51         return;
  52
  53     //e.g. #i90599#. Someone starts typing a sequence in a dialog, but doesn't
  54     //end it, and then closes the dialog, deleting the accelerators. So if
  55     //we're removing an accelerator that a sub-accelerator which is in the
  56     //sequence list, throw away the entire sequence
  57     if ( mpSequenceList ) {
  58         for (sal_uInt16 i = 0; i < pAccel->GetItemCount(); ++i) {
  59             Accelerator* pSubAccel = pAccel->GetAccel( pAccel->GetItemId(i) );
  60             for (Accelerator* j : *mpSequenceList) {
  61                 if ( j == pSubAccel ) {
  62                     EndSequence();
  63                     i = pAccel->GetItemCount();
  64                     break;
  65                 }
  66             }
  67         }
  68     }
  69
  70     // throw it away
  71     auto it = std::find(mpAccelList->begin(), mpAccelList->end(), pAccel);
  72     if (it != mpAccelList->end())
  73         mpAccelList->erase( it );
  74 }
  75
  76 void ImplAccelManager::EndSequence()
  77 {
  78     // are we in a list ?
  79     if ( !mpSequenceList )
  80         return;
  81
  82     for (Accelerator* pTempAccel : *mpSequenceList)
  83     {
  84         pTempAccel->mpDel = nullptr;
  85     }
  86
  87     // delete sequence-list
  88     mpSequenceList.reset();
  89 }
  90
  91 bool ImplAccelManager::IsAccelKey( const vcl::KeyCode& rKeyCode )
  92 {
  93     Accelerator* pAccel;
  94
  95     // do we have accelerators ??
  96     if ( !mpAccelList )
  97         return false;
  98     if ( mpAccelList->empty() )
  99         return false;
 100
 101     // are we in a sequence ?
 102     if ( mpSequenceList )
 103     {
 104         pAccel = mpSequenceList->empty() ? nullptr : (*mpSequenceList)[ 0 ];
 105
 106         // not found ?
 107         if ( !pAccel )
 108         {
 109             // abort sequence
 110             FlushAccel();
 111             return false;
 112         }
 113
 114         // can the entry be found ?
 115         ImplAccelEntry* pEntry = pAccel->ImplGetAccelData( rKeyCode );
 116         if ( pEntry )
 117         {
 118             Accelerator* pNextAccel = pEntry->mpAccel;
 119
 120             // is an accelerator coupled ?
 121             if ( pNextAccel )
 122             {
 123
 124                 mpSequenceList->insert( mpSequenceList->begin(), pNextAccel );
 125
 126                 // call Activate-Handler of the new one
 127                 pNextAccel->Activate();
 128                 return true;
 129             }
 130             else
 131             {
 132                 // it is there already !
 133                 if ( pEntry->mbEnabled )
 134                 {
 135                     // stop sequence (first call deactivate-handler)
 136                     EndSequence();
 137
 138                     // set accelerator of the actual item
 139                     // and call the handler
 140                     bool bDel = false;
 141                     pAccel->mnCurId         = pEntry->mnId;
 142                     pAccel->mpDel           = &bDel;
 143                     pAccel->Select();
 144
 145                     // did the accelerator survive the call
 146                     if ( !bDel )
 147                     {
 148                         pAccel->mnCurId         = 0;
 149                         pAccel->mpDel           = nullptr;
 150                     }
 151
 152                     return true;
 153                 }
 154                 else
 155                 {
 156                     // stop sequence as the accelerator was disabled
 157                     // transfer the key (to the system)
 158                     FlushAccel();
 159                     return false;
 160                 }
 161             }
 162         }
 163         else
 164         {
 165             // wrong key => stop sequence
 166             FlushAccel();
 167             return false;
 168         }
 169     }
 170
 171     // step through the list of accelerators
 172     for (Accelerator* i : *mpAccelList)
 173     {
 174         pAccel = i;
 175
 176         // is the entry contained ?
 177         ImplAccelEntry* pEntry = pAccel->ImplGetAccelData( rKeyCode );
 178         if ( pEntry )
 179         {
 180             Accelerator* pNextAccel = pEntry->mpAccel;
 181
 182             // is an accelerator assigned ?
 183             if ( pNextAccel )
 184             {
 185
 186                 // create sequence list
 187                 mpSequenceList.reset( new std::vector< Accelerator* > );
 188                 mpSequenceList->insert( mpSequenceList->begin(), pAccel     );
 189                 mpSequenceList->insert( mpSequenceList->begin(), pNextAccel );
 190
 191                 // call activate-Handler of the new one
 192                 pNextAccel->Activate();
 193
 194                 return true;
 195             }
 196             else
 197             {
 198                 // already assigned !
 199                 if ( pEntry->mbEnabled )
 200                 {
 201                     // first call activate/deactivate-Handler
 202                     pAccel->Activate();
 203
 204                     // define accelerator of the actual item
 205                     // and call the handler
 206                     bool bDel = false;
 207                     pAccel->mnCurId         = pEntry->mnId;
 208                     pAccel->mpDel           = &bDel;
 209                     pAccel->Select();
 210
 211                     // if the accelerator did survive the call
 212                     if ( !bDel )
 213                     {
 214                         pAccel->mnCurId         = 0;
 215                         pAccel->mpDel           = nullptr;
 216                     }
 217
 218                     return true;
 219                 }
 220                 else
 221                     return false;
 222             }
 223         }
 224     }
 225
 226     return false;
 227 }
 228
 229 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */