PowerToys/src/modules/keyboardmanager/test/MockedInput.h

#pragma once
#include <keyboardmanager/common/InputInterface.h>
#include <vector>
#include <functional>

#include <common/LowlevelKeyboardEvent.h>

// Class for mocked keyboard input
class MockedInput :
    public InputInterface
{
private:
    // Stores the states for all the keys - false for key up, and true for key down
    std::vector<bool> keyboardState;

    // Function to be executed as a low level hook. By default it is nullptr so the hook is skipped
    std::function<intptr_t(LowlevelKeyboardEvent*)> hookProc;

    // Stores the count of sendVirtualInput calls given if the condition sendVirtualInputCallCondition is satisfied
    int sendVirtualInputCallCount = 0;
    std::function<bool(LowlevelKeyboardEvent*)> sendVirtualInputCallCondition;

    std::wstring currentProcess;

public:
    MockedInput()
    {
        keyboardState.resize(256, false);
    }

    // Set the keyboard hook procedure to be tested
    void SetHookProc(std::function<intptr_t(LowlevelKeyboardEvent*)> hookProcedure);

    // Function to simulate keyboard input
    UINT SendVirtualInput(UINT cInputs, LPINPUT pInputs, int cbSize);

    // Function to simulate keyboard hook behavior
    intptr_t MockedKeyboardHook(LowlevelKeyboardEvent* data);

    // Function to get the state of a particular key
    bool GetVirtualKeyState(int key);

    // Function to reset the mocked keyboard state
    void ResetKeyboardState();

    // Function to set SendVirtualInput call count condition
    void SetSendVirtualInputTestHandler(std::function<bool(LowlevelKeyboardEvent*)> condition);

    // Function to get SendVirtualInput call count
    int GetSendVirtualInputCallCount();

    // Function to get the foreground process name
    void SetForegroundProcess(std::wstring process);

    // Function to get the foreground process name
    void GetForegroundProcess(_Out_ std::wstring& foregroundProcess);
};