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Added a wrap-around flag to the List. Resolves #380

tablepad
Oliver 3 years ago
parent
commit
6e00e540f2
  1. 26
      list.go

26
list.go

@ -51,6 +51,9 @@ type List struct {
// If true, the entire row is highlighted when selected.
highlightFullLine bool
// Whether or not navigating the list will wrap around.
wrapAround bool
// The number of list items skipped at the top before the first item is drawn.
offset int
@ -71,6 +74,7 @@ func NewList() *List {
return &List{
Box: NewBox(),
showSecondaryText: true,
wrapAround: true,
mainTextColor: Styles.PrimaryTextColor,
secondaryTextColor: Styles.TertiaryTextColor,
shortcutColor: Styles.SecondaryTextColor,
@ -212,6 +216,16 @@ func (l *List) ShowSecondaryText(show bool) *List {
return l
}
// SetWrapAround sets the flag that determines whether navigating the list will
// wrap around. That is, navigating downwards on the last item will move the
// selection to the first item (similarly in the other direction). If set to
// false, the selection won't change when navigating downwards on the last item
// or navigating upwards on the first item.
func (l *List) SetWrapAround(wrapAround bool) *List {
l.wrapAround = wrapAround
return l
}
// SetChangedFunc sets the function which is called when the user navigates to
// a list item. The function receives the item's index in the list of items
// (starting with 0), its main text, secondary text, and its shortcut rune.
@ -516,9 +530,17 @@ func (l *List) InputHandler() func(event *tcell.EventKey, setFocus func(p Primit
}
if l.currentItem < 0 {
l.currentItem = len(l.items) - 1
if l.wrapAround {
l.currentItem = len(l.items) - 1
} else {
l.currentItem = 0
}
} else if l.currentItem >= len(l.items) {
l.currentItem = 0
if l.wrapAround {
l.currentItem = 0
} else {
l.currentItem = len(l.items) - 1
}
}
if l.currentItem != previousItem && l.currentItem < len(l.items) && l.changed != nil {

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