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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_UI_THUMBNAILS_THUMBNAIL_SCHEDULER_H_
#define CHROME_BROWSER_UI_THUMBNAILS_THUMBNAIL_SCHEDULER_H_
#include "chrome/browser/ui/thumbnails/thumbnail_capture_driver.h"
#include "chrome/browser/ui/thumbnails/thumbnail_readiness_tracker.h"
class ThumbnailScheduler {
public:
using PageReadiness = ThumbnailReadinessTracker::Readiness;
class TabCapturer {
public:
// Called with true when the scheduler permits a tab to start
// capturing, or with false when it is no longer allowed to capture.
// Will only be true for tabs that want to capture. Gets set to false
// if a tab doesn't want capture anymore.
//
// Capture should begin immediately when permitted, and should stop
// immediately when disallowed.
virtual void SetCapturePermittedByScheduler(bool capture_permitted) = 0;
protected:
virtual ~TabCapturer() = default;
};
enum class TabCapturePriority {
kNone = 0,
kLow,
kHigh,
};
ThumbnailScheduler() = default;
virtual ~ThumbnailScheduler() = default;
virtual void AddTab(TabCapturer* tab) = 0;
virtual void RemoveTab(TabCapturer* tab) = 0;
virtual void SetTabCapturePriority(TabCapturer* tab,
TabCapturePriority priority) = 0;
};
#endif // CHROME_BROWSER_UI_THUMBNAILS_THUMBNAIL_SCHEDULER_H_
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