44 lines
796 B
Go
44 lines
796 B
Go
package main
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import (
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"log"
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"github.com/jroimartin/gocui"
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)
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type Binding struct {
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Key gocui.Key
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Mod gocui.Modifier
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Handler func(g *gocui.Gui, v *gocui.View) error
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}
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func (vc *View) CursorUp(g *gocui.Gui, v *gocui.View) error {
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return MoveCursor(-1, g, v)
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}
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func (vc *View) CursorDown(g *gocui.Gui, v *gocui.View) error {
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return MoveCursor(1, g, v)
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}
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func MoveCursor(mod int, g *gocui.Gui, v *gocui.View) error {
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if v == nil {
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return nil
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}
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_, my := v.Size()
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cx, cy := v.Cursor()
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log.Printf("my: %d, cx: %d, cy: %d", my, cx, cy)
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if cy+mod < 0 || cy+mod == my {
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return nil
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}
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if err := v.SetCursor(cx, cy+mod); err != nil {
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if mod == -1 {
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return nil
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}
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ox, oy := v.Origin()
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if err := v.SetOrigin(ox, oy+mod); err != nil {
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return err
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}
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}
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return nil
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}
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