1 files changed, 124 insertions, 0 deletions
diff --git a/widget/windows/nsWindowDbg.h b/widget/windows/nsWindowDbg.h
new file mode 100644
index 0000000000..e89541c11d
--- /dev/null
+++ b/widget/windows/nsWindowDbg.h
@@ -0,0 +1,124 @@
+/* -*- 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 WindowDbg_h__
+#define WindowDbg_h__
+
+/*
+ * nsWindowDbg - Debug related utilities for nsWindow.
+ */
+
+#include "nsWindowDefs.h"
+
+// Enables debug output for popup rollup hooks
+//#define POPUP_ROLLUP_DEBUG_OUTPUT
+
+// Enable window size and state debug output
+//#define WINSTATE_DEBUG_OUTPUT
+
+// nsIWidget defines a set of debug output statements
+// that are called in various places within the code.
+//#define WIDGET_DEBUG_OUTPUT
+
+// Enable IS_VK_DOWN debug output
+//#define DEBUG_VK
+
+namespace mozilla::widget {
+// Windows message debugging data
+struct EventMsgInfo {
+  const char* mStr;
+  UINT mId;
+  std::function<nsAutoCString(WPARAM, LPARAM, bool)> mParamInfoFn;
+  std::function<void(nsCString&, WPARAM, const char*, bool)> mWParamInfoFn;
+  const char* mWParamName;
+  std::function<void(nsCString&, LPARAM, const char*, bool)> mLParamInfoFn;
+  const char* mLParamName;
+  void LogParameters(nsCString& str, WPARAM wParam, LPARAM lParam,
+                     bool isPreCall);
+};
+extern std::unordered_map<UINT, EventMsgInfo> gAllEvents;
+
+// RAII-style class to log before and after an event is handled.
+class PrintEvent final {
+ public:
+  PrintEvent(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam,
+             LRESULT retValue);
+  void SetResult(bool result) { mResult = mozilla::Some(result); }
+  ~PrintEvent();
+
+ private:
+  bool PrintEventInternal();
+  const HWND mHwnd;
+  const UINT mMsg;
+  const WPARAM mWParam;
+  const LPARAM mLParam;
+  const LRESULT mRetValue;
+  mozilla::Maybe<long> mEventCounter;
+  // not const because it will be set after the event is handled
+  mozilla::Maybe<bool> mResult;
+  bool mShouldLogPostCall;
+};
+
+struct EnumValueAndName {
+  uint64_t mFlag;
+  const char* mName;
+};
+
+// Appends to str a description of the flags passed in.
+// flagsAndNames is a list of flag values with a string description
+// for each one. These are processed in order, so if there are
+// flag values that are combination of individual values (for example
+// something like WS_OVERLAPPEDWINDOW) they need to come first
+// in the flagsAndNames array.
+// A 0 flag value will only be written if the flags input is exactly
+// 0, and it must come last in the flagsAndNames array.
+// Returns whether any info was appended to str.
+bool AppendFlagsInfo(nsCString& str, uint64_t flags,
+                     const nsTArray<EnumValueAndName>& flagsAndNames,
+                     const char* name);
+
+nsAutoCString WmSizeParamInfo(uint64_t wParam, uint64_t lParam, bool isPreCall);
+void XLowWordYHighWordParamInfo(nsCString& str, uint64_t value,
+                                const char* name, bool isPreCall);
+void WindowPosParamInfo(nsCString& str, uint64_t value, const char* name,
+                        bool isPreCall);
+void WindowEdgeParamInfo(nsCString& str, uint64_t value, const char* name,
+                         bool isPreCall);
+void RectParamInfo(nsCString& str, uint64_t value, const char* name,
+                   bool isPreCall);
+void UiActionParamInfo(nsCString& str, uint64_t value, const char* name,
+                       bool isPreCall);
+void WideStringParamInfo(nsCString& result, uint64_t value, const char* name,
+                         bool isPreCall);
+void MinMaxInfoParamInfo(nsCString& result, uint64_t value, const char* name,
+                         bool isPreCall);
+nsAutoCString WmNcCalcSizeParamInfo(uint64_t wParam, uint64_t lParam,
+                                    bool isPreCall);
+}  // namespace mozilla::widget
+
+#if defined(POPUP_ROLLUP_DEBUG_OUTPUT)
+typedef struct {
+  char* mStr;
+  int mId;
+} MSGFEventMsgInfo;
+
+#  define DISPLAY_NMM_PRT(_arg) \
+    MOZ_LOG(gWindowsLog, mozilla::LogLevel::Info, ((_arg)));
+#else
+#  define DISPLAY_NMM_PRT(_arg)
+#endif  // defined(POPUP_ROLLUP_DEBUG_OUTPUT)
+
+#if defined(DEBUG)
+void DDError(const char* msg, HRESULT hr);
+#endif  // defined(DEBUG)
+
+#if defined(DEBUG_VK)
+bool is_vk_down(int vk);
+#  define IS_VK_DOWN is_vk_down
+#else
+#  define IS_VK_DOWN(a) (GetKeyState(a) < 0)
+#endif  // defined(DEBUG_VK)
+
+#endif /* WindowDbg_h__ */