lazydocker/pkg/gui/panels/list_panel.go
2022-11-09 21:21:36 +11:00

42 lines
954 B
Go

package panels
import (
"github.com/jesseduffield/gocui"
lcUtils "github.com/jesseduffield/lazycore/pkg/utils"
)
type ListPanel[T comparable] struct {
SelectedIdx int
List *FilteredList[T]
View *gocui.View
}
func (self *ListPanel[T]) SetSelectedLineIdx(value int) {
clampedValue := 0
if self.List.Len() > 0 {
clampedValue = lcUtils.Clamp(value, 0, self.List.Len()-1)
}
self.SelectedIdx = clampedValue
}
func (self *ListPanel[T]) clampSelectedLineIdx() {
clamped := lcUtils.Clamp(self.SelectedIdx, 0, self.List.Len()-1)
if clamped != self.SelectedIdx {
self.SelectedIdx = clamped
}
}
// moves the cursor up or down by the given amount (up for negative values)
func (self *ListPanel[T]) moveSelectedLine(delta int) {
self.SetSelectedLineIdx(self.SelectedIdx + delta)
}
func (self *ListPanel[T]) SelectNextLine() {
self.moveSelectedLine(1)
}
func (self *ListPanel[T]) SelectPrevLine() {
self.moveSelectedLine(-1)
}