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package context
import (
"github.com/jesseduffield/gocui"
"github.com/jesseduffield/lazygit/pkg/utils"
)
const HORIZONTAL_SCROLL_FACTOR = 3
type ViewTrait struct {
getView func() *gocui.View
}
func NewViewTrait(getView func() *gocui.View) *ViewTrait {
return &ViewTrait{getView: getView}
}
func (self *ViewTrait) FocusPoint(yIdx int) {
view := self.getView()
view.FocusPoint(view.OriginX(), yIdx)
}
func (self *ViewTrait) SetViewPortContent(content string) {
view := self.getView()
_, y := view.Origin()
view.OverwriteLines(y, content)
}
func (self *ViewTrait) SetContent(content string) {
self.getView().SetContent(content)
}
func (self *ViewTrait) SetFooter(value string) {
self.getView().Footer = value
}
func (self *ViewTrait) SetOriginX(value int) {
self.getView().SetOriginX(value)
}
// tells us the bounds of line indexes shown in the view currently
func (self *ViewTrait) ViewPortYBounds() (int, int) {
view := self.getView()
_, min := view.Origin()
max := view.InnerHeight() + 1
return min, max
}
func (self *ViewTrait) ScrollLeft() {
view := self.getView()
newOriginX := utils.Max(view.OriginX()-view.InnerWidth()/HORIZONTAL_SCROLL_FACTOR, 0)
_ = view.SetOriginX(newOriginX)
}
func (self *ViewTrait) ScrollRight() {
view := self.getView()
_ = view.SetOriginX(view.OriginX() + view.InnerWidth()/HORIZONTAL_SCROLL_FACTOR)
}
// this returns the amount we'll scroll if we want to scroll by a page.
func (self *ViewTrait) PageDelta() int {
view := self.getView()
_, height := view.Size()
delta := height - 1
if delta == 0 {
return 1
}
return delta
}
func (self *ViewTrait) SelectedLineIdx() int {
return self.getView().SelectedLineIdx()
}
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