ensure_visible_when_focused

Description:

ensure visible when focused

Introduction #
I was having a hard time scrolling to a specific wdget in a scenario where I had a very large form, with lots of form fields.
I found an issue with no concrete answer https://github.com/flutter/flutter/issues/58877
After digging a litlle deeper I found a solution to this problem https://www.didierboelens.com/2018/04/hint-4 -ensure-a-textfield-or-textformfield-is-visible-in-the-viewport-when-has-the-focus/. Hence the idea of ​​creating and making this widget available.
This widget solves this problem in a very elegant way. You just have to give the same FocusNode of the widget you want to scroll to.
Basic Usage #
The widget is very simple to use. You need to Wrap your widget on a EnsureVisibleWhenFocused widget. You have to pass the FocusNode of the widget you want to scroll to when it's given focus.
EnsureVisibleWhenFocused(
focusNode: _focusNode,
child: TextFormField(
focusNode: _focusNode,
),
)
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With the setup above, every time the TextFormField gains focus, a scroll will be made to it.
You can give focus to a field just doing:
_focusNode.requestFocus();
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You can configure more things, such as the scroll duration and it's curve.

Suggestions & Bugs #
For any suggestions or bug report please head to issue tracker.