serge-sans-paille
e68e3aea28
The compiler automatically generates a call to !(a==b) when (a!=b) is met and operator!= is not defined, so let's remove useless code. Cases automatically detected by an extension to the linter from Bug 2064388, also included in that patch. Differential Revision: https://phabricator.services.mozilla.com/D320346
72 lines
1.9 KiB
C++
72 lines
1.9 KiB
C++
/*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef _mozilla_WindowHook_h_
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#define _mozilla_WindowHook_h_
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#include <nsClassHashtable.h>
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#include <nsHashKeys.h>
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#include <nsTArray.h>
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#include <windows.h>
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#include "nsAppShell.h"
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class nsWindow;
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namespace mozilla {
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namespace widget {
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struct MSGResult;
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class WindowHook {
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public:
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// It is expected that most callbacks will return false
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typedef bool (*Callback)(void* aContext, HWND hWnd, UINT nMsg, WPARAM wParam,
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LPARAM lParam, LRESULT* aResult);
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nsresult AddHook(UINT nMsg, Callback callback, void* context);
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nsresult RemoveHook(UINT nMsg, Callback callback, void* context);
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nsresult AddMonitor(UINT nMsg, Callback callback, void* context);
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nsresult RemoveMonitor(UINT nMsg, Callback callback, void* context);
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private:
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struct CallbackData {
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Callback cb;
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void* context;
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CallbackData() : cb(nullptr), context(nullptr) {}
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CallbackData(Callback cb, void* ctx) : cb(cb), context(ctx) {}
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bool Invoke(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam,
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LRESULT* aResult);
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bool operator==(const CallbackData& rhs) const = default;
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explicit operator bool() const { return !!cb; }
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};
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typedef nsTArray<CallbackData> CallbackDataArray;
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struct MessageData {
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UINT nMsg;
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CallbackData hook;
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CallbackDataArray monitors;
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};
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bool Notify(HWND hWnd, UINT nMsg, WPARAM wParam, LPARAM lParam,
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MSGResult& aResult);
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MessageData* Lookup(UINT nMsg);
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MessageData* LookupOrCreate(UINT nMsg);
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void DeleteIfEmpty(MessageData* data);
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typedef nsTArray<MessageData> MessageDataArray;
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MessageDataArray mMessageData;
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// For Notify
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friend class ::nsWindow;
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};
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} // namespace widget
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} // namespace mozilla
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#endif // _mozilla_WindowHook_h_
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