Bug 1595800 - Part 1: Move screen orientation attributes from Document to BrowsingContext r=smaug

Differential Revision: https://phabricator.services.mozilla.com/D54999

--HG--
extra : moz-landing-system : lando

docshell/base/BrowsingContext.cpp

@@ -52,6 +52,17 @@ extern mozilla::LazyLogModule gAutoplayPermissionLog;
 #define AUTOPLAY_LOG(msg, ...) \
   MOZ_LOG(gAutoplayPermissionLog, LogLevel::Debug, (msg, ##__VA_ARGS__))
 
+namespace IPC {
+// Allow serialization and deserialization of OrientationType over IPC
+template <>
+struct ParamTraits<mozilla::dom::OrientationType>
+    : public ContiguousEnumSerializerInclusive<
+          mozilla::dom::OrientationType,
+          mozilla::dom::OrientationType::Portrait_primary,
+          mozilla::dom::OrientationType::Landscape_secondary> {};
+
+}  // namespace IPC
+
 namespace mozilla {
 namespace dom {
 

docshell/base/BrowsingContext.h

@@ -273,6 +273,18 @@ class BrowsingContext : public nsISupports,
 
   bool IsLoading();
 
+  // ScreenOrientation related APIs
+  void SetCurrentOrientation(OrientationType aType, float aAngle) {
+    SetCurrentOrientationType(aType);
+    SetCurrentOrientationAngle(aAngle);
+  }
+
+  void SetRDMPaneOrientation(OrientationType aType, float aAngle) {
+    if (mInRDMPane) {
+      SetCurrentOrientation(aType, aAngle);
+    }
+  }
+
   // Using the rules for choosing a browsing context we try to find
   // the browsing context with the given name in the set of
   // transitively reachable browsing contexts. Performs access control

docshell/base/BrowsingContextFieldList.h

@@ -42,6 +42,11 @@ MOZ_BC_FIELD(FeaturePolicy, RefPtr<mozilla::dom::FeaturePolicy>)
 // See nsSandboxFlags.h for the possible flags.
 MOZ_BC_FIELD(SandboxFlags, uint32_t)
 
+// ScreenOrientation-related APIs
+MOZ_BC_FIELD(CurrentOrientationAngle, float)
+
+MOZ_BC_FIELD(CurrentOrientationType, mozilla::dom::OrientationType)
+
 MOZ_BC_FIELD(HistoryID, nsID)
 
 MOZ_BC_FIELD(InRDMPane, bool)

dom/chrome-webidl/BrowsingContext.webidl

@@ -51,6 +51,10 @@ interface BrowsingContext {
   // The inRDMPane flag indicates whether or not Responsive Design Mode is
   // active for the browsing context.
   attribute boolean inRDMPane;
+
+  // Extension to give chrome JS the ability to set the window screen
+  // orientation while in RDM.
+  void setRDMPaneOrientation(OrientationType type, float rotationAngle);
 };
 
 [Exposed=Window, ChromeOnly]