OpenShot Audio Library | OpenShotAudio 0.4.0

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juce_ChangeBroadcaster.h
1/*
2 ==============================================================================
3
4 This file is part of the JUCE library.
5 Copyright (c) 2022 - Raw Material Software Limited
6
7 JUCE is an open source library subject to commercial or open-source
8 licensing.
9
10 The code included in this file is provided under the terms of the ISC license
11 http://www.isc.org/downloads/software-support-policy/isc-license. Permission
12 To use, copy, modify, and/or distribute this software for any purpose with or
13 without fee is hereby granted provided that the above copyright notice and
14 this permission notice appear in all copies.
15
16 JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
17 EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
18 DISCLAIMED.
19
20 ==============================================================================
21*/
22
23 namespace juce
24{
25
26//==============================================================================
34 class JUCE_API ChangeBroadcaster
35{
36 public:
37 //==============================================================================
39 ChangeBroadcaster() noexcept;
40
42 virtual ~ChangeBroadcaster();
43
44 //==============================================================================
48 void addChangeListener (ChangeListener* listener);
49
53 void removeChangeListener (ChangeListener* listener);
54
56 void removeAllChangeListeners();
57
58 //==============================================================================
65 void sendChangeMessage();
66
74 void sendSynchronousChangeMessage();
75
81 void dispatchPendingMessages();
82
83 private:
84 //==============================================================================
85 class ChangeBroadcasterCallback : public AsyncUpdater
86 {
87 public:
88 ChangeBroadcasterCallback();
89 ~ChangeBroadcasterCallback() override { cancelPendingUpdate(); }
90 void handleAsyncUpdate() override;
91
92 ChangeBroadcaster* owner;
93 };
94
95 friend class ChangeBroadcasterCallback;
96 ChangeBroadcasterCallback broadcastCallback;
97 ListenerList <ChangeListener> changeListeners;
98
99 std::atomic<bool> anyListeners { false };
100
101 void callListeners();
102
103 JUCE_DECLARE_NON_COPYABLE (ChangeBroadcaster)
104};
105
106} // namespace juce
juce::AsyncUpdater
Definition juce_AsyncUpdater.h:39
juce::ChangeBroadcaster
Definition juce_ChangeBroadcaster.h:35
juce::ChangeListener
Definition juce_ChangeListener.h:45