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Can a checkbox have three states?
A tri-state checkbox can be checked, not checked, or partially checked. The condition of being partially checked is based on the selection of child elements. If all child elements are selected, the parent checkbox is checked. If some child elements are selected, the parent checkbox is partially checked.
What is mixed state for checkbox?
A mixed state checkbox represents the state of a set of checkboxes. If none of the checkboxes in the set are checked, the mixed state checkbox is not checked, and if all members of the set are checked, the mixed state checkbox is checked.
What is tristate in flutter?
The tristate field allows you to define whether the value field can be null. If you set the tristate to true then you can just use a nullable boolean as the input!
