Line data    Source code

       1              : /*
       2              :  * SPDX-License-Identifier: GPL-3.0-only
       3              :  * MuseScore-CLA-applies
       4              :  *
       5              :  * MuseScore Studio
       6              :  * Music Composition & Notation
       7              :  *
       8              :  * Copyright (C) 2021 MuseScore Limited and others
       9              :  *
      10              :  * This program is free software: you can redistribute it and/or modify
      11              :  * it under the terms of the GNU General Public License version 3 as
      12              :  * published by the Free Software Foundation.
      13              :  *
      14              :  * This program is distributed in the hope that it will be useful,
      15              :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      16              :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      17              :  * GNU General Public License for more details.
      18              :  *
      19              :  * You should have received a copy of the GNU General Public License
      20              :  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
      21              :  */
      22              : #ifndef MUSE_MI_RESOURCELOCKGUARD_H
      23              : #define MUSE_MI_RESOURCELOCKGUARD_H
      24              : 
      25              : #include <string>
      26              : #include <memory>
      27              : 
      28              : #include "imultiwindowsprovider.h"
      29              : 
      30              : namespace muse::mi {
      31              : class ReadResourceLockGuard
      32              : {
      33              : public:
      34          395 :     ReadResourceLockGuard(std::shared_ptr<IMultiWindowsProvider> provider, const std::string& name)
      35          395 :         : m_provider(provider), m_name(name)
      36              :     {
      37          395 :         if (m_provider) {
      38          188 :             m_provider->lockResource(m_name);
      39              :         }
      40          395 :     }
      41              : 
      42          395 :     ~ReadResourceLockGuard()
      43              :     {
      44          395 :         if (m_provider) {
      45          188 :             m_provider->unlockResource(m_name);
      46              :         }
      47          395 :     }
      48              : 
      49              : protected:
      50              :     std::shared_ptr<IMultiWindowsProvider> m_provider = nullptr;
      51              :     std::string m_name;
      52              : };
      53              : 
      54              : class WriteResourceLockGuard : ReadResourceLockGuard
      55              : {
      56              : public:
      57          254 :     WriteResourceLockGuard(std::shared_ptr<IMultiWindowsProvider> provider, const std::string& name)
      58          254 :         : ReadResourceLockGuard(provider, name)
      59              :     {
      60          254 :     }
      61              : 
      62          254 :     ~WriteResourceLockGuard()
      63              :     {
      64          254 :         if (m_provider) {
      65           93 :             m_provider->notifyAboutResourceChanged(m_name);
      66              :         }
      67          254 :     }
      68              : };
      69              : }
      70              : 
      71              : #endif // MUSE_MI_RESOURCELOCKGUARD_H