Add m-esr52 at 52.6.0

1 files changed, 157 insertions, 0 deletions

diff --git a/widget/android/AndroidContentController.cpp b/widget/android/AndroidContentController.cpp
new file mode 100644
index 000000000..1df053afb
--- /dev/null
+++ b/widget/android/AndroidContentController.cpp
@@ -0,0 +1,157 @@
+/* -*- Mode: c++; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
+ * 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/. */
+
+#include "AndroidContentController.h"
+
+#include "AndroidBridge.h"
+#include "base/message_loop.h"
+#include "mozilla/layers/APZCCallbackHelper.h"
+#include "mozilla/layers/IAPZCTreeManager.h"
+#include "nsIObserverService.h"
+#include "nsLayoutUtils.h"
+#include "nsWindow.h"
+
+using mozilla::layers::IAPZCTreeManager;
+
+namespace mozilla {
+namespace widget {
+
+void
+AndroidContentController::Destroy()
+{
+    mAndroidWindow = nullptr;
+    ChromeProcessController::Destroy();
+}
+
+void
+AndroidContentController::NotifyDefaultPrevented(IAPZCTreeManager* aManager,
+                                                 uint64_t aInputBlockId,
+                                                 bool aDefaultPrevented)
+{
+    if (!AndroidBridge::IsJavaUiThread()) {
+        // The notification must reach the APZ on the Java UI thread (aka the
+        // APZ "controller" thread) but we get it from the Gecko thread, so we
+        // have to throw it onto the other thread.
+        AndroidBridge::Bridge()->PostTaskToUiThread(NewRunnableMethod<uint64_t, bool>(
+            aManager, &IAPZCTreeManager::ContentReceivedInputBlock,
+            aInputBlockId, aDefaultPrevented), 0);
+        return;
+    }
+
+    aManager->ContentReceivedInputBlock(aInputBlockId, aDefaultPrevented);
+}
+
+void
+AndroidContentController::DispatchSingleTapToObservers(const LayoutDevicePoint& aPoint,
+                                                       const ScrollableLayerGuid& aGuid) const
+{
+    nsIContent* content = nsLayoutUtils::FindContentFor(aGuid.mScrollId);
+    nsPresContext* context = content
+        ? mozilla::layers::APZCCallbackHelper::GetPresContextForContent(content)
+        : nullptr;
+
+    if (!context) {
+      return;
+    }
+
+    CSSPoint point = mozilla::layers::APZCCallbackHelper::ApplyCallbackTransform(
+        aPoint / context->CSSToDevPixelScale(), aGuid);
+
+    nsPresContext* rcdContext = context->GetToplevelContentDocumentPresContext();
+    if (rcdContext && rcdContext->PresShell()->ScaleToResolution()) {
+        // We need to convert from the root document to the root content document,
+        // by unapplying the resolution that's on the content document.
+        const float resolution = rcdContext->PresShell()->GetResolution();
+        point.x /= resolution;
+        point.y /= resolution;
+    }
+
+    CSSIntPoint rounded = RoundedToInt(point);
+    nsAppShell::PostEvent([rounded] {
+        nsCOMPtr<nsIObserverService> obsServ =
+            mozilla::services::GetObserverService();
+        if (!obsServ) {
+            return;
+        }
+
+        nsPrintfCString data("{\"x\":%d,\"y\":%d}", rounded.x, rounded.y);
+        obsServ->NotifyObservers(nullptr, "Gesture:SingleTap",
+                                 NS_ConvertASCIItoUTF16(data).get());
+    });
+}
+
+void
+AndroidContentController::HandleTap(TapType aType, const LayoutDevicePoint& aPoint,
+                                    Modifiers aModifiers,
+                                    const ScrollableLayerGuid& aGuid,
+                                    uint64_t aInputBlockId)
+{
+    // This function will get invoked first on the Java UI thread, and then
+    // again on the main thread (because of the code in ChromeProcessController::
+    // HandleTap). We want to post the SingleTap message once; it can be
+    // done from either thread but we need access to the callback transform
+    // so we do it from the main thread.
+    if (NS_IsMainThread() &&
+        (aType == TapType::eSingleTap || aType == TapType::eSecondTap)) {
+        DispatchSingleTapToObservers(aPoint, aGuid);
+    }
+
+    ChromeProcessController::HandleTap(aType, aPoint, aModifiers, aGuid, aInputBlockId);
+}
+
+void
+AndroidContentController::PostDelayedTask(already_AddRefed<Runnable> aTask, int aDelayMs)
+{
+    AndroidBridge::Bridge()->PostTaskToUiThread(Move(aTask), aDelayMs);
+}
+void
+AndroidContentController::UpdateOverscrollVelocity(const float aX, const float aY, const bool aIsRootContent)
+{
+  if (aIsRootContent && mAndroidWindow) {
+    mAndroidWindow->UpdateOverscrollVelocity(aX, aY);
+  }
+}
+
+void
+AndroidContentController::UpdateOverscrollOffset(const float aX, const float aY, const bool aIsRootContent)
+{
+  if (aIsRootContent && mAndroidWindow) {
+    mAndroidWindow->UpdateOverscrollOffset(aX, aY);
+  }
+}
+
+void
+AndroidContentController::SetScrollingRootContent(const bool isRootContent)
+{
+  if (mAndroidWindow) {
+    mAndroidWindow->SetScrollingRootContent(isRootContent);
+  }
+}
+
+void
+AndroidContentController::NotifyAPZStateChange(const ScrollableLayerGuid& aGuid,
+                                               APZStateChange aChange,
+                                               int aArg)
+{
+  // This function may get invoked twice, if the first invocation is not on
+  // the main thread then the ChromeProcessController version of this function
+  // will redispatch to the main thread. We want to make sure that our handling
+  // only happens on the main thread.
+  ChromeProcessController::NotifyAPZStateChange(aGuid, aChange, aArg);
+  if (NS_IsMainThread()) {
+    nsCOMPtr<nsIObserverService> observerService = mozilla::services::GetObserverService();
+    if (aChange == layers::GeckoContentController::APZStateChange::eTransformEnd) {
+      // This is used by tests to determine when the APZ is done doing whatever
+      // it's doing. XXX generify this as needed when writing additional tests.
+      observerService->NotifyObservers(nullptr, "APZ:TransformEnd", nullptr);
+      observerService->NotifyObservers(nullptr, "PanZoom:StateChange", u"NOTHING");
+    } else if (aChange == layers::GeckoContentController::APZStateChange::eTransformBegin) {
+      observerService->NotifyObservers(nullptr, "PanZoom:StateChange", u"PANNING");
+    }
+  }
+}
+
+} // namespace widget
+} // namespace mozilla