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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+ * Retrieves and displays icons on the macOS Touch Bar.
+ */
+
+#ifndef nsTouchBarInputIcon_h_
+#define nsTouchBarInputIcon_h_
+
+#import <Cocoa/Cocoa.h>
+
+#include "mozilla/widget/IconLoader.h"
+#include "nsTouchBarInput.h"
+
+using namespace mozilla::dom;
+
+class nsIURI;
+class nsIPrincipal;
+class imgRequestProxy;
+
+namespace mozilla::dom {
+class Document;
+}
+
+class nsTouchBarInputIcon : public mozilla::widget::IconLoader::Listener {
+ public:
+ explicit nsTouchBarInputIcon(RefPtr<Document> aDocument,
+ TouchBarInput* aInput, NSTouchBarItem* aItem);
+
+ NS_INLINE_DECL_REFCOUNTING(nsTouchBarInputIcon)
+
+ private:
+ virtual ~nsTouchBarInputIcon();
+
+ public:
+ // SetupIcon succeeds if it was able to set up the icon, or if there should
+ // be no icon, in which case it clears any existing icon but still succeeds.
+ nsresult SetupIcon(nsCOMPtr<nsIURI> aIconURI);
+
+ // Implements this method for mozilla::widget::IconLoader::Listener.
+ // Called once the icon load is complete.
+ nsresult OnComplete(imgIContainer* aImage) override;
+
+ // Unless we take precautions, we may outlive the object that created us
+ // (mTouchBar, which owns our native menu item (mTouchBarInput)).
+ // Destroy() should be called from mTouchBar's destructor to prevent
+ // this from happening.
+ void Destroy();
+
+ void ReleaseJSObjects();
+
+ protected:
+ RefPtr<Document> mDocument;
+ bool mSetIcon;
+ NSButton* mButton;
+ // We accept a mShareScrubber only as a special case since
+ // NSSharingServicePickerTouchBarItem does not expose an NSButton* on which we
+ // can set the `image` property.
+ NSSharingServicePickerTouchBarItem* mShareScrubber;
+ // We accept a popover only as a special case.
+ NSPopoverTouchBarItem* mPopoverItem;
+ // The icon loader object should never outlive its creating
+ // nsTouchBarInputIcon object.
+ RefPtr<mozilla::widget::IconLoader> mIconLoader;
+};
+
+#endif // nsTouchBarInputIcon_h_