55 lines
1.5 KiB
C++
55 lines
1.5 KiB
C++
// Copyright (c) 2015 GitHub, Inc.
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#ifndef ATOM_BROWSER_API_TRACKABLE_OBJECT_H_
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#define ATOM_BROWSER_API_TRACKABLE_OBJECT_H_
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#include "atom/browser/api/event_emitter.h"
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#include "atom/common/id_weak_map.h"
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namespace base {
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class SupportsUserData;
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}
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namespace mate {
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// All instances of TrackableObject will be kept in a weak map and can be got
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// from its ID.
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class TrackableObject : public mate::EventEmitter {
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public:
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// Find out the TrackableObject from its ID in weak map.
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static TrackableObject* FromWeakMapID(v8::Isolate* isolate, int32_t id);
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// Find out the TrackableObject from the class it wraps.
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static TrackableObject* FromWrappedClass(
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v8::Isolate* isolate, base::SupportsUserData* wrapped);
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// Releases all weak references in weak map, called when app is terminating.
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static void ReleaseAllWeakReferences();
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// mate::Wrappable:
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void AfterInit(v8::Isolate* isolate) override;
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// The ID in weak map.
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int32_t weak_map_id() const { return weak_map_id_; }
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protected:
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TrackableObject();
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~TrackableObject() override;
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// Wrap TrackableObject into a class that SupportsUserData.
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void AttachAsUserData(base::SupportsUserData* wrapped);
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private:
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static atom::IDWeakMap weak_map_;
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int32_t weak_map_id_;
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base::SupportsUserData* wrapped_;
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DISALLOW_COPY_AND_ASSIGN(TrackableObject);
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};
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} // namespace mate
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#endif // ATOM_BROWSER_API_TRACKABLE_OBJECT_H_
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