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docs(indicators): Refactored to use MovingAverage_Engine

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Indicators/MyIndicators/MFI_Pro.md
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@@ -29,24 +29,27 @@ Our MQL5 implementation follows a modern, object-oriented design to ensure stabi
- **Modular Calculation Engine (`MFI_Calculator.mqh`):**
The entire calculation logic is encapsulated within a reusable include file.
- **`CMFICalculator`**: The base class that performs the full MFI and signal line calculation.
- **`CMFICalculator_HA`**: A child class that inherits all logic and only overrides the data preparation step to use the Typical Price derived from smoothed Heikin Ashi candles.
- **Composition:** The calculator internally uses our universal `MovingAverage_Engine.mqh` to handle the smoothing of the Signal Line. This allows for advanced smoothing types (like DEMA or TEMA) beyond the standard SMA.
- **Selectable Display Mode:** The indicator includes a `Display Mode` input that allows the user to show either the MFI line by itself or the MFI line together with its moving average signal line.
- **Optimized Incremental Calculation (O(1)):**
Unlike basic implementations that recalculate the entire history on every tick, this indicator employs an intelligent incremental algorithm.
- **State Tracking:** It utilizes `prev_calculated` to process only new bars.
- **Persistent Buffers:** Internal buffers (Typical Price, Money Flow) persist their state between ticks.
- **Sliding Window:** The summation of Money Flow is handled by an efficient sliding window logic that updates incrementally.
- **Stability via Full Recalculation:** We employ a "brute-force" full recalculation within `OnCalculate` for maximum stability.
- **Efficient Calculation:** The summation of Money Flow is handled by an efficient **sliding window sum** technique.
- **Object-Oriented Design:**
- A base class, `CMFICalculator`, handles the core MFI algorithm.
- A derived class, `CMFICalculator_HA`, inherits from the base class and overrides the data preparation step to use the Typical Price derived from smoothed Heikin Ashi candles.
## 4. Parameters
- **MFI Period (`InpMFIPeriod`):** The lookback period for summing the money flows. The standard is `14`.
- **MFI Period (`InpMFIPeriod`):** The lookback period for summing the money flows. (Default: `14`).
- **Candle Source (`InpCandleSource`):** Allows the user to select the candle type for the Typical Price calculation (`Standard` or `Heikin Ashi`).
- **Volume Type (`InpVolumeType`):** Allows the user to select between Tick Volume and Real Volume.
- **Signal Line Settings:**
- `InpDisplayMode`: Toggles the visibility of the signal line.
- `InpMAPeriod`: The lookback period for the signal line.
- `InpMAMethod`: The type of moving average for the signal line.
- `InpMAMethod`: The type of moving average for the signal line. Supports: **SMA, EMA, SMMA, LWMA, TMA, DEMA, TEMA**.
## 5. Usage and Interpretation