From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001 From: "Matt A. Tobin" Date: Fri, 2 Feb 2018 04:16:08 -0500 Subject: Add m-esr52 at 52.6.0 --- image/IProgressObserver.h | 58 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 image/IProgressObserver.h (limited to 'image/IProgressObserver.h') diff --git a/image/IProgressObserver.h b/image/IProgressObserver.h new file mode 100644 index 000000000..ba2f1e9ac --- /dev/null +++ b/image/IProgressObserver.h @@ -0,0 +1,58 @@ +/* -*- 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/. */ + +#ifndef mozilla_image_IProgressObserver_h +#define mozilla_image_IProgressObserver_h + +#include "mozilla/WeakPtr.h" +#include "nsISupports.h" +#include "nsRect.h" + +namespace mozilla { +namespace image { + +/** + * An interface for observing changes to image state, as reported by + * ProgressTracker. + * + * This is the ImageLib-internal version of imgINotificationObserver, + * essentially, with implementation details that code outside of ImageLib + * shouldn't see. + * + * XXX(seth): It's preferable to avoid adding anything to this interface if + * possible. In the long term, it would be ideal to get to a place where we can + * just use the imgINotificationObserver interface internally as well. + */ +class IProgressObserver : public SupportsWeakPtr +{ +public: + MOZ_DECLARE_WEAKREFERENCE_TYPENAME(IProgressObserver) + + // Subclasses may or may not be XPCOM classes, so we just require that they + // implement AddRef and Release. + NS_IMETHOD_(MozExternalRefCountType) AddRef(void) = 0; + NS_IMETHOD_(MozExternalRefCountType) Release(void) = 0; + + // imgINotificationObserver methods: + virtual void Notify(int32_t aType, const nsIntRect* aRect = nullptr) = 0; + virtual void OnLoadComplete(bool aLastPart) = 0; + + // imgIOnloadBlocker methods: + virtual void BlockOnload() = 0; + virtual void UnblockOnload() = 0; + + // Other, internal-only methods: + virtual void SetHasImage() = 0; + virtual bool NotificationsDeferred() const = 0; + virtual void SetNotificationsDeferred(bool aDeferNotifications) = 0; + +protected: + virtual ~IProgressObserver() { } +}; + +} // namespace image +} // namespace mozilla + +#endif // mozilla_image_IProgressObserver_h -- cgit v1.2.3