Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 217 insertions, 0 deletions

diff --git a/widget/android/nsAppShell.h b/widget/android/nsAppShell.h
new file mode 100644
index 0000000000..9b1dc5ca14
--- /dev/null
+++ b/widget/android/nsAppShell.h
@@ -0,0 +1,217 @@
+/* -*- Mode: c++; tab-width: 4; 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 nsAppShell_h__
+#define nsAppShell_h__
+
+#include <time.h>
+
+#include <type_traits>
+#include <utility>
+
+#include "mozilla/BackgroundHangMonitor.h"
+#include "mozilla/LinkedList.h"
+#include "mozilla/Monitor.h"
+#include "mozilla/StaticPtr.h"
+#include "mozilla/TimeStamp.h"  // for mozilla::TimeDuration
+#include "mozilla/UniquePtr.h"
+#include "mozilla/Unused.h"
+#include "mozilla/jni/Natives.h"
+#include "nsBaseAppShell.h"
+#include "nsCOMPtr.h"
+#include "nsIAndroidBridge.h"
+#include "nsInterfaceHashtable.h"
+#include "nsTArray.h"
+
+namespace mozilla {
+bool ProcessNextEvent();
+void NotifyEvent();
+}  // namespace mozilla
+
+class nsWindow;
+
+class nsAppShell : public nsBaseAppShell {
+ public:
+  struct Event : mozilla::LinkedListElement<Event> {
+    static uint64_t GetTime() {
+      timespec time;
+      if (clock_gettime(CLOCK_MONOTONIC, &time)) {
+        return 0ull;
+      }
+      return uint64_t(time.tv_sec) * 1000000000ull + time.tv_nsec;
+    }
+
+    uint64_t mPostTime{0};
+
+    bool HasSameTypeAs(const Event* other) const {
+      // Compare vtable addresses to determine same type.
+      return *reinterpret_cast<const uintptr_t*>(this) ==
+             *reinterpret_cast<const uintptr_t*>(other);
+    }
+
+    virtual ~Event() {}
+    virtual void Run() = 0;
+
+    virtual void PostTo(mozilla::LinkedList<Event>& queue) {
+      queue.insertBack(this);
+    }
+
+    virtual bool IsUIEvent() const { return false; }
+  };
+
+  template <typename T>
+  class LambdaEvent : public Event {
+   protected:
+    T lambda;
+
+   public:
+    explicit LambdaEvent(T&& l) : lambda(std::move(l)) {}
+    void Run() override { lambda(); }
+  };
+
+  class ProxyEvent : public Event {
+   protected:
+    mozilla::UniquePtr<Event> baseEvent;
+
+   public:
+    explicit ProxyEvent(mozilla::UniquePtr<Event>&& event)
+        : baseEvent(std::move(event)) {}
+
+    void PostTo(mozilla::LinkedList<Event>& queue) override {
+      baseEvent->PostTo(queue);
+    }
+
+    void Run() override { baseEvent->Run(); }
+  };
+
+  static nsAppShell* Get() {
+    MOZ_ASSERT(NS_IsMainThread());
+    return sAppShell;
+  }
+
+  nsAppShell();
+
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_NSIOBSERVER
+
+  nsresult Init();
+
+  void NotifyNativeEvent();
+  bool ProcessNextNativeEvent(bool mayWait) override;
+
+  // Post a subclass of Event.
+  // e.g. PostEvent(mozilla::MakeUnique<MyEvent>());
+  template <typename T, typename D>
+  static void PostEvent(mozilla::UniquePtr<T, D>&& event) {
+    mozilla::MutexAutoLock lock(*sAppShellLock);
+    if (!sAppShell) {
+      return;
+    }
+    sAppShell->mEventQueue.Post(std::move(event));
+  }
+
+  // Post a event that will call a lambda
+  // e.g. PostEvent([=] { /* do something */ });
+  template <typename T>
+  static void PostEvent(T&& lambda) {
+    mozilla::MutexAutoLock lock(*sAppShellLock);
+    if (!sAppShell) {
+      return;
+    }
+    sAppShell->mEventQueue.Post(
+        mozilla::MakeUnique<LambdaEvent<T>>(std::move(lambda)));
+  }
+
+  // Post a event and wait for it to finish running on the Gecko thread.
+  static bool SyncRunEvent(
+      Event&& event,
+      mozilla::UniquePtr<Event> (*eventFactory)(mozilla::UniquePtr<Event>&&) =
+          nullptr,
+      const mozilla::TimeDuration timeout = mozilla::TimeDuration::Forever());
+
+  template <typename T>
+  static std::enable_if_t<!std::is_base_of<Event, T>::value, void> SyncRunEvent(
+      T&& lambda) {
+    SyncRunEvent(LambdaEvent<T>(std::forward<T>(lambda)));
+  }
+
+  static already_AddRefed<nsIURI> ResolveURI(const nsCString& aUriStr);
+
+ protected:
+  static nsAppShell* sAppShell;
+  static mozilla::StaticAutoPtr<mozilla::Mutex> sAppShellLock;
+
+  virtual ~nsAppShell();
+
+  NS_IMETHOD Exit() override;
+  nsresult AddObserver(const nsAString& aObserverKey, nsIObserver* aObserver);
+
+  class NativeCallbackEvent : public Event {
+    // Capturing the nsAppShell instance is safe because if the app
+    // shell is destroyed, this lambda will not be called either.
+    nsAppShell* const appShell;
+
+   public:
+    explicit NativeCallbackEvent(nsAppShell* as) : appShell(as) {}
+    void Run() override { appShell->NativeEventCallback(); }
+  };
+
+  void ScheduleNativeEventCallback() override {
+    mEventQueue.Post(mozilla::MakeUnique<NativeCallbackEvent>(this));
+  }
+
+  class Queue {
+   private:
+    mozilla::Monitor mMonitor MOZ_UNANNOTATED;
+    mozilla::LinkedList<Event> mQueue;
+
+   public:
+    enum { LATENCY_UI, LATENCY_OTHER, LATENCY_COUNT };
+    Queue() : mMonitor("nsAppShell.Queue") {}
+
+    void Signal() {
+      mozilla::MonitorAutoLock lock(mMonitor);
+      lock.NotifyAll();
+    }
+
+    void Post(mozilla::UniquePtr<Event>&& event) {
+      MOZ_ASSERT(event && !event->isInList());
+
+      mozilla::MonitorAutoLock lock(mMonitor);
+      event->PostTo(mQueue);
+      if (event->isInList()) {
+        event->mPostTime = Event::GetTime();
+        // Ownership of event object transfers to the queue.
+        mozilla::Unused << event.release();
+      }
+      lock.NotifyAll();
+    }
+
+    mozilla::UniquePtr<Event> Pop(bool mayWait) {
+      mozilla::MonitorAutoLock lock(mMonitor);
+
+      if (mayWait && mQueue.isEmpty()) {
+        lock.Wait();
+      }
+
+      // Ownership of event object transfers to the return value.
+      mozilla::UniquePtr<Event> event(mQueue.popFirst());
+      if (!event || !event->mPostTime) {
+        return event;
+      }
+
+      return event;
+    }
+
+  } mEventQueue;
+
+ private:
+  mozilla::CondVar mSyncRunFinished;
+  bool mSyncRunQuit;
+
+  nsInterfaceHashtable<nsStringHashKey, nsIObserver> mObserversHash;
+};
+
+#endif  // nsAppShell_h__