1 files changed, 69 insertions, 0 deletions
diff --git a/layout/base/MVMContext.h b/layout/base/MVMContext.h
new file mode 100644
index 0000000000..bf5ae09fcd
--- /dev/null
+++ b/layout/base/MVMContext.h
@@ -0,0 +1,69 @@
+/* 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 MVMContext_h_
+#define MVMContext_h_
+
+#include "Units.h"
+#include "mozilla/Maybe.h"
+#include "mozilla/PresShellForwards.h"
+#include "nsISupportsImpl.h"
+#include "nsStringFwd.h"
+#include "nsViewportInfo.h"
+
+class nsIDOMEventListener;
+class nsIObserver;
+class nsISupports;
+
+namespace mozilla {
+
+/**
+ * The interface MobileViewportManager uses to interface with its surroundings.
+ * This mainly exists to facilitate testing MobileViewportManager in isolation
+ * from the rest of Gecko.
+ */
+class MVMContext {
+  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(MVMContext)
+ protected:
+  virtual ~MVMContext() {}
+
+ public:
+  virtual void AddEventListener(const nsAString& aType,
+                                nsIDOMEventListener* aListener,
+                                bool aUseCapture) = 0;
+  virtual void RemoveEventListener(const nsAString& aType,
+                                   nsIDOMEventListener* aListener,
+                                   bool aUseCapture) = 0;
+  virtual void AddObserver(nsIObserver* aObserver, const char* aTopic,
+                           bool aOwnsWeak) = 0;
+  virtual void RemoveObserver(nsIObserver* aObserver, const char* aTopic) = 0;
+  virtual void Destroy() = 0;
+
+  virtual nsViewportInfo GetViewportInfo(
+      const ScreenIntSize& aDisplaySize) const = 0;
+  virtual CSSToLayoutDeviceScale CSSToDevPixelScale() const = 0;
+  virtual float GetResolution() const = 0;
+  virtual bool SubjectMatchesDocument(nsISupports* aSubject) const = 0;
+  virtual Maybe<CSSRect> CalculateScrollableRectForRSF() const = 0;
+  virtual bool IsResolutionUpdatedByApz() const = 0;
+  virtual LayoutDeviceMargin ScrollbarAreaToExcludeFromCompositionBounds()
+      const = 0;
+  virtual Maybe<LayoutDeviceIntSize> GetDocumentViewerSize() const = 0;
+  virtual bool AllowZoomingForDocument() const = 0;
+  virtual bool IsInReaderMode() const = 0;
+  virtual bool IsDocumentLoading() const = 0;
+
+  virtual void SetResolutionAndScaleTo(float aResolution,
+                                       ResolutionChangeOrigin aOrigin) = 0;
+  virtual void SetVisualViewportSize(const CSSSize& aSize) = 0;
+  virtual void PostVisualViewportResizeEventByDynamicToolbar() = 0;
+  virtual void UpdateDisplayPortMargins() = 0;
+
+  virtual void Reflow(const CSSSize& aNewSize) = 0;
+  virtual ScreenIntCoord GetDynamicToolbarOffset() = 0;
+};
+
+}  // namespace mozilla
+
+#endif  // MVMContext_h_