OpenShot Audio Library | OpenShotAudio 0.4.0

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juce_ActionBroadcaster.cpp
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 class ActionBroadcaster::ActionMessage final : public MessageManager::MessageBase
27{
28 public:
29 ActionMessage (const ActionBroadcaster* ab,
30 const String& messageText, ActionListener* l) noexcept
31 : broadcaster (const_cast<ActionBroadcaster*> (ab)),
32 message (messageText),
33 listener (l)
34 {}
35
36 void messageCallback() override
37 {
38 if (auto b = broadcaster.get())
39 if (b->actionListeners.contains (listener))
40 listener->actionListenerCallback (message);
41 }
42
43 private:
44 WeakReference<ActionBroadcaster> broadcaster;
45 const String message;
46 ActionListener* const listener;
47
48 JUCE_DECLARE_NON_COPYABLE (ActionMessage)
49};
50
51//==============================================================================
52 ActionBroadcaster::ActionBroadcaster()
53{
54 // are you trying to create this object before or after juce has been initialised??
55 JUCE_ASSERT_MESSAGE_MANAGER_EXISTS
56}
57
58 ActionBroadcaster::~ActionBroadcaster()
59{
60 // all event-based objects must be deleted BEFORE juce is shut down!
61 JUCE_ASSERT_MESSAGE_MANAGER_EXISTS
62}
63
64 void ActionBroadcaster::addActionListener (ActionListener* const listener)
65{
66 const ScopedLock sl (actionListenerLock);
67
68 if (listener != nullptr)
69 actionListeners.add (listener);
70}
71
72 void ActionBroadcaster::removeActionListener (ActionListener* const listener)
73{
74 const ScopedLock sl (actionListenerLock);
75 actionListeners.removeValue (listener);
76}
77
78 void ActionBroadcaster::removeAllActionListeners()
79{
80 const ScopedLock sl (actionListenerLock);
81 actionListeners.clear();
82}
83
84 void ActionBroadcaster::sendActionMessage (const String& message) const
85{
86 const ScopedLock sl (actionListenerLock);
87
88 for (int i = actionListeners.size(); --i >= 0;)
89 (new ActionMessage (this, message, actionListeners.getUnchecked (i)))->post();
90}
91
92} // namespace juce
juce::ActionBroadcaster::removeActionListener
void removeActionListener(ActionListener *listener)
Definition juce_ActionBroadcaster.cpp:72
juce::ActionBroadcaster::ActionBroadcaster
ActionBroadcaster()
Definition juce_ActionBroadcaster.cpp:52
juce::ActionBroadcaster::addActionListener
void addActionListener(ActionListener *listener)
Definition juce_ActionBroadcaster.cpp:64
juce::ActionBroadcaster::~ActionBroadcaster
virtual ~ActionBroadcaster()
Definition juce_ActionBroadcaster.cpp:58
juce::ActionBroadcaster::removeAllActionListeners
void removeAllActionListeners()
Definition juce_ActionBroadcaster.cpp:78
juce::ActionBroadcaster::sendActionMessage
void sendActionMessage(const String &message) const
Definition juce_ActionBroadcaster.cpp:84
juce::ActionListener
Definition juce_ActionListener.h:35
juce::ActionListener::actionListenerCallback
virtual void actionListenerCallback(const String &message)=0
juce::GenericScopedLock
Definition juce_ScopedLock.h:55
juce::String
Definition juce_String.h:53