Created InputHandler (markdown)

InputHandler.md

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+# InputHandler Class
+
+The `InputHandler` class is the main class for handling user input in the DynamicCursesInput gem. It is responsible for capturing user keystrokes and managing the input string and cursor position accordingly.
+
+## Methods
+
+### .catch_input(echo)
+
+This is a class method that creates a new instance of `InputHandler` and calls the `catch_input` instance method on it. It takes one parameter:
+
+- `echo`: a boolean value that determines whether the input should be echoed back to the user.
+
+### initialize(echo)
+
+This is the constructor for the `InputHandler` class. It initializes the instance variables and sets up Curses. It takes one parameter:
+
+- `echo`: a boolean value that determines whether the input should be echoed back to the user.
+
+### catch_input
+
+This instance method captures user keystrokes until the Enter key is pressed. It handles each keystroke by calling the `handle_key` method and then redraws the input by calling the `redraw_input` method. It returns the input string when the Enter key is pressed.
+
+### handle_key(chk)
+
+This private instance method handles a single keystroke. It takes one parameter:
+
+- `chk`: the keystroke to handle.
+
+Depending on the value of `chk`, it calls one of the following methods: `handle_left_key`, `handle_right_key`, `handle_backspace_key`, `handle_enter_key`, or `handle_default_key`.
+
+### handle_left_key
+
+This private instance method handles the Left arrow key. It moves the cursor one position to the left by calling the `CursorMover.left` method.
+
+### handle_right_key
+
+This private instance method handles the Right arrow key. It moves the cursor one position to the right by calling the `CursorMover.right` method.
+
+### handle_backspace_key
+
+This private instance method handles the Backspace key. It deletes the character at the cursor position and moves the cursor one position to the left by calling the `CharacterDeleter.delete` method.
+
+### handle_enter_key
+
+This private instance method handles the Enter key. It breaks the loop in the `catch_input` method.
+
+### handle_default_key(chk)
+
+This private instance method handles any other keystroke. It adds the character at the cursor position and moves the cursor one position to the right by calling the `CharacterAdder.add` method. It takes one parameter:
+
+- `chk`: the keystroke to handle.
+
+### redraw_input
+
+This private instance method redraws the input. It clears the line, prints the input string, and moves the cursor to the correct position.