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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_UI_APP_ICON_LOADER_H_
#define CHROME_BROWSER_UI_APP_ICON_LOADER_H_
#include <string>
#include "base/macros.h"
#include "chrome/browser/ui/app_icon_loader_delegate.h"
class Profile;
namespace gfx {
class ImageSkia;
}
// Base class that loads and updates Chrome app's icons.
class AppIconLoader {
public:
virtual ~AppIconLoader();
// Returns true is this AppIconLoader is able to load an image for the
// requested app.
virtual bool CanLoadImageForApp(const std::string& app_id) = 0;
// Fetches the image for the specified id. When done (which may be
// synchronous), this should invoke SetAppImage() on the delegate.
virtual void FetchImage(const std::string& app_id) = 0;
// Clears the image for the specified id.
virtual void ClearImage(const std::string& app_id) = 0;
// Updates the image for the specified id. This is called to re-create
// the app icon with latest app state (enabled or disabled/terminiated).
// SetAppImage() is called when done.
virtual void UpdateImage(const std::string& app_id) = 0;
protected:
AppIconLoader();
AppIconLoader(Profile* profile,
int icon_size,
AppIconLoaderDelegate* delegate);
Profile* profile() { return profile_; }
int icon_size() const { return icon_size_; }
AppIconLoaderDelegate* delegate() { return delegate_; }
private:
Profile* const profile_ = nullptr;
const int icon_size_ = 0;
// The delegate object which receives the icon images. No ownership.
AppIconLoaderDelegate* const delegate_ = nullptr;
DISALLOW_COPY_AND_ASSIGN(AppIconLoader);
};
#endif // CHROME_BROWSER_UI_APP_ICON_LOADER_H_
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