Revamp FormItem styling, add arrow symbol to DropDown, add focus-driven style
options, add InputField autocomplete style options, provide DropDownOption in
DropDown handlers and provide ListItem in List handlers.
See merge request tslocum/cview!5
BREAKING CHANGE:
`SetFormAttributes` has been removed. To migrate your project, use `SetAttributes` which expects any combination of attribute setters.
Example:
`formItem.SetAttributes(cview.WithLabelWidth(10), cview.WithLabelColor(tcell.ColorYellow))`
or
`formItem.SetAttributes(cview.WithBackgroundColor(tcell.ColorBlack))`
BREAKING CHANGE:
DropDown:
- The signature of `GetCurrentOption` has been changed to return the index and the newly exposed `DropDownOption`
- `AddOption` has been renamed to `AddOptions` and accepts now multiple `DropDownOption`s. A convenience func called `AddOptionsSimple` has been added to simply add options by only providing its text.
- The signature of `SetOptions` has been changed to accept the global `selected` handler with the newly exposed `DropDownOption` and multiple `DropDownOption`s to set. A convenience func, namely `SetOptionsSimple`, has been added to simply add options by only providing its text.
- The signature of `SetSelectedFunc` has been changed to accept a handler expecting an index and the newly exposed `DropDownOption`
Form:
- The signature of `AddDropDown` has been changed to accept an array of the newly exposed `DropDownOption`. A convenience func, namely `AddDropDownSimple`, has been added to simply add a DropDown by only providing the option's text.
BREAKING CHANGE:
- The signature of `SetChangedFunc` and `SetSelectedFunc` has changed to pass the newly exposed `ListItem` instead of its properties
- The signature of `AddItem` and `InsertItem` has changed to expect a `ListItem` instead of the properties them self
Trevor Slocum
Andreas Bieber