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Side by Side Diff: services/media/factory_service/event.h

Issue 1822333002: Motown: wholesale clang-format (Closed) Base URL: https://github.com/domokit/mojo.git@master
Patch Set: dalesat Created 4 years, 9 months ago
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1 // Copyright 2016 The Chromium Authors. All rights reserved. 1 // Copyright 2016 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef MOJO_SERVICES_MEDIA_FACTORY_EVENT_H_ 5 #ifndef MOJO_SERVICES_MEDIA_FACTORY_EVENT_H_
6 #define MOJO_SERVICES_MEDIA_FACTORY_EVENT_H_ 6 #define MOJO_SERVICES_MEDIA_FACTORY_EVENT_H_
7 7
8 #include <memory> 8 #include <memory>
9 #include <vector> 9 #include <vector>
10 10
(...skipping 103 matching lines...) Expand 10 before | Expand all | Expand 10 after
114 return *this; 114 return *this;
115 } 115 }
116 116
117 // Makes this Event null. 117 // Makes this Event null.
118 const Event& operator=(std::nullptr_t) { 118 const Event& operator=(std::nullptr_t) {
119 impl_.reset(); 119 impl_.reset();
120 return *this; 120 return *this;
121 } 121 }
122 122
123 // Determines whether this Event is non-null. 123 // Determines whether this Event is non-null.
124 explicit operator bool() const { 124 explicit operator bool() const { return static_cast<bool>(impl_); }
125 return static_cast<bool>(impl_);
126 }
127 125
128 // Executes the consequence when this Event occurs. If this Event hasn't 126 // Executes the consequence when this Event occurs. If this Event hasn't
129 // occurred or been cancelled when this method is called, a copy of the 127 // occurred or been cancelled when this method is called, a copy of the
130 // consequence is held until this Event occurs or is cancelled. If this Event 128 // consequence is held until this Event occurs or is cancelled. If this Event
131 // has occurred when this method is called, the consequence is executed 129 // has occurred when this method is called, the consequence is executed
132 // immediately and no copy of the consequence is held. If this Event is 130 // immediately and no copy of the consequence is held. If this Event is
133 // cancelled when this method is called, the method does nothing. 131 // cancelled when this method is called, the method does nothing.
134 // Returns this. 132 // Returns this.
135 const Event& When(const std::function<void()>& consequence) const; 133 const Event& When(const std::function<void()>& consequence) const;
136 134
137 // Determines if this Event has occurred due to a past call to Occur or Run. 135 // Determines if this Event has occurred due to a past call to Occur or Run.
138 bool occurred() const; 136 bool occurred() const;
139 137
140 // Determines if this Event has been cancelled. 138 // Determines if this Event has been cancelled.
141 bool cancelled() const; 139 bool cancelled() const;
142 140
143 // If this Event hasn't yet occurred or been cancelled, this method makes 141 // If this Event hasn't yet occurred or been cancelled, this method makes
144 // this Event occur, executing and deleting all its consequences. Otherwise, 142 // this Event occur, executing and deleting all its consequences. Otherwise,
145 // does nothing. 143 // does nothing.
146 void Occur() const; 144 void Occur() const;
147 145
148 // If this Event hasn't yet occurred or been cancelled, this method cancels 146 // If this Event hasn't yet occurred or been cancelled, this method cancels
149 // this Event and deletes all its consequences. Otherwise, does nothing. 147 // this Event and deletes all its consequences. Otherwise, does nothing.
150 void Cancel() const; 148 void Cancel() const;
151 149
152 // Calls Occur. This method makes an Event convertible to 150 // Calls Occur. This method makes an Event convertible to
153 // mojo::Callback<void()>. 151 // mojo::Callback<void()>.
154 void Run() const { 152 void Run() const { Occur(); }
155 Occur();
156 }
157 153
158 private: 154 private:
159 explicit Event(const std::shared_ptr<EventImpl>& impl); 155 explicit Event(const std::shared_ptr<EventImpl>& impl);
160 156
161 std::shared_ptr<EventImpl> impl_; 157 std::shared_ptr<EventImpl> impl_;
162 }; 158 };
163 159
164 } // namespace media 160 } // namespace media
165 } // namespace mojo 161 } // namespace mojo
166 162
167 #endif // MOJO_SERVICES_MEDIA_FACTORY_EVENT_H_ 163 #endif // MOJO_SERVICES_MEDIA_FACTORY_EVENT_H_
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