Inesa/v1 docstrings (#5285)

* Docstrings and default values for IconButton

* remove ListTile example

* docstrings for ListTile

* ListTile, MenuBar

* MenuItemButton

* NavigationBar

* NavigationDrawer

* Delete a.txt

Author: InesaFitsner

packages/flet/lib/src/controls/menu_item_button.dart

@@ -77,7 +77,7 @@ class _MenuItemButtonControlState extends State<MenuItemButtonControl> {
           : null,
       leadingIcon: widget.control.buildWidget("leading"),
       trailingIcon: widget.control.buildWidget("trailing_icon"),
-      child: widget.control.buildWidget("content"),
+      child: widget.control.buildTextOrWidget("content"),
     );
 
     var focusValue = widget.control.getString("focus");

sdk/python/packages/flet/src/flet/controls/material/icon_button.py

@@ -26,9 +26,11 @@
 @control("IconButton")
 class IconButton(ConstrainedControl, AdaptiveControl):
     """
-    An icon button is a round button with an icon in the middle that reacts to touches by filling with color (ink).
+    An icon button is a round button with an icon in the middle that reacts to touches
+    by filling with color (ink).
 
-    Icon buttons are commonly used in the toolbars, but they can be used in many other places as well.
+    Icon buttons are commonly used in the toolbars, but they can be used in many other
+    places as well.
 
     Online docs: https://flet.dev/docs/controls/iconbutton
     """
@@ -44,35 +46,205 @@ def __setattr__(self, name, value):
         super().__setattr__(name, value)
 
     icon: Optional[IconValueOrControl] = None
+    """
+    Icon shown in the button.
+    """
+
     icon_color: OptionalColorValue = None
+    """
+    Icon [color](https://flet.dev/docs/reference/colors).
+    """
+
     icon_size: OptionalNumber = None
-    selected: bool = False
+    """
+    Icon size in virtual pixels.
+
+    Defaults to `24`.
+    """
+
+    selected: Optional[bool] = None
+    """
+    The optional selection state of the icon button.
+
+    If this property is not set, the button will behave as a normal push button, 
+    otherwise, the button will toggle between showing `icon` and `selected_icon` based
+    on the value of `selected`. 
+    
+    If True, it will show `selected_icon`, if False it will show `icon`.
+    """
+
     selected_icon: Optional[IconValueOrControl] = None
+    """
+    Icon shown in the button in selected state.
+    """
+
     selected_icon_color: OptionalColorValue = None
+    """
+    Icon [color](https://flet.dev/docs/reference/colors) for the selected state.
+
+    An example of icon toggle button:
+
+    <img src="/img/blog/gradients/toggle-icon-button.gif" className="screenshot-10" />
+
+    ```python
+    import flet as ft
+
+    def main(page: ft.Page):
+
+        def toggle_icon_button(e):
+            e.control.selected = not e.control.selected
+
+        page.add(
+            ft.IconButton(
+                icon=ft.Icons.BATTERY_1_BAR,
+                selected_icon=ft.Icons.BATTERY_FULL,
+                on_click=toggle_icon_button,
+                selected=False,
+                style=ft.ButtonStyle(
+                    color={"selected": ft.Colors.GREEN, "": ft.Colors.RED},
+                ),
+            )
+        )
+
+    ft.app(main)
+    ```
+    """
+
     bgcolor: OptionalColorValue = None
+    """
+    TBD
+    """
+
     highlight_color: OptionalColorValue = None
+    """
+    The button's [color](https://flet.dev/docs/reference/colors) when the button is 
+    pressed. The highlight fades in quickly as the button is held down.
+    """
+
     style: Optional[ButtonStyle] = None
+    """
+    Value is of type [`ButtonStyle`](https://flet.dev/docs/reference/types/buttonstyle).
+    """
+
     autofocus: bool = False
+    """
+    True if the control will be selected as the initial focus. If there is more than 
+    one control on a page with autofocus set, then the first one added to the page will 
+    get focus.
+    """
+
     disabled_color: OptionalColorValue = None
+    """
+    The [color](https://flet.dev/docs/reference/colors) to use for the icon inside the
+      button when disabled.
+    """
+
     hover_color: OptionalColorValue = None
+    """
+    The button's [color](https://flet.dev/docs/reference/colors) when hovered.
+    """
+
     focus_color: OptionalColorValue = None
+    """
+    The button's [color](https://flet.dev/docs/reference/colors) when in focus.
+    """
+
     splash_color: OptionalColorValue = None
+    """
+    The primary [color](https://flet.dev/docs/reference/colors) of the button when the 
+    button is in the down (pressed) state.
+    """
+
     splash_radius: OptionalNumber = None
+    """
+    The splash radius. Honoured only when in Material 2.
+    """
+
     alignment: Optional[Alignment] = None
+    """
+    Defines how the icon is positioned within the IconButton. Alignment is an instance
+    of [`Alignment`](https://flet.dev/docs/reference/types/alignment) class.
+
+    Defaults to `alignment.center`.
+    """
+
     padding: OptionalPaddingValue = None
-    enable_feedback: Optional[bool] = True
+    """
+    Defines the padding around this button. The entire padded icon will react to input 
+    gestures.
+
+    Value is of type [`Padding`](https://flet.dev/docs/reference/types/padding) and 
+    defaults to `Padding.all(8)`.
+    """
+
+    enable_feedback: Optional[bool] = None
+    """
+    Whether detected gestures should provide acoustic and/or haptic feedback. 
+    On Android, for example, setting this to `True` produce a click sound and a 
+    long-press will produce a short vibration. 
+    """
+
     url: Optional[str] = None
+    """
+    The URL to open when the button is clicked. If registered, `on_click` event is fired
+    after that.
+    """
+
     url_target: Optional[UrlTarget] = None
+    """
+    Where to open URL in the web mode.
+
+    Value is of type [`UrlTarget`](https://flet.dev/docs/reference/types/urltarget).
+    """
+
     mouse_cursor: Optional[MouseCursor] = None
+    """
+    The cursor to be displayed when a mouse pointer enters or is hovering over this 
+    control.
+
+    Value is of type [`MouseCursor`](https://flet.dev/docs/reference/types/mousecursor).
+    """
+
     visual_density: Optional[VisualDensity] = None
+    """
+    Defines how compact the control's layout will be.
+
+    Value is of type [`VisualDensity`](https://flet.dev/docs/reference/types/visualdensity).
+    """
+
     size_constraints: Optional[BoxConstraints] = None
+    """
+    TBD
+    """
+
     on_click: OptionalControlEventCallable = None
+    """
+    Fires when a user clicks the button.
+    """
+
     on_focus: OptionalControlEventCallable = None
+    """
+    Fires when the control has received focus.
+    """
+
     on_blur: OptionalControlEventCallable = None
+    """
+    Fires when the control has lost focus.
+    """
+
     content: Optional[Control] = None  # todo(0.70.3): remove in favor of icon
+    """
+    A Control representing custom button content.
+    """
 
     async def focus_async(self):
+        """
+        Moves focus to a button.
+        """
         await self._invoke_method_async("focus")
 
     def focus(self):
+        """
+        Moves focus to a button.
+        """
         asyncio.create_task(self.focus_async())