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107 lines
1.9 KiB
Go
107 lines
1.9 KiB
Go
package views
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import (
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"fmt"
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"github.com/jroimartin/gocui"
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"github.com/edouardparis/lntop/ui/color"
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)
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const (
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HELP = "help"
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)
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type Help struct {
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view *gocui.View
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}
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func (h Help) Name() string {
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return HELP
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}
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func (h *Help) Wrap(v *gocui.View) view {
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h.view = v
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return h
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}
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func (h *Help) CursorDown() error {
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if h.view != nil {
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cx, cy := h.view.Cursor()
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err := h.view.SetCursor(cx, cy+1)
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if err != nil {
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ox, oy := h.view.Origin()
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err := h.view.SetOrigin(ox, oy+1)
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if err != nil {
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return err
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}
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}
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}
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return nil
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}
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func (h *Help) CursorUp() error {
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if h.view != nil {
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ox, oy := h.view.Origin()
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cx, cy := h.view.Cursor()
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err := h.view.SetCursor(cx, cy-1)
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if err != nil && oy > 0 {
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err := h.view.SetOrigin(ox, oy-1)
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if err != nil {
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return err
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}
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}
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}
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return nil
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}
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func (h *Help) CursorRight() error {
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if h.view != nil {
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cx, cy := h.view.Cursor()
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err := h.view.SetCursor(cx+2, cy)
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if err != nil {
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ox, oy := h.view.Origin()
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err := h.view.SetOrigin(ox+2, oy)
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if err != nil {
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return err
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}
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}
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}
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return nil
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}
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func (h *Help) CursorLeft() error {
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if h.view != nil {
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ox, oy := h.view.Origin()
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cx, cy := h.view.Cursor()
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err := h.view.SetCursor(cx-2, cy)
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if err != nil && ox > 1 {
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err := h.view.SetOrigin(ox-2, oy)
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if err != nil {
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return err
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}
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}
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}
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return nil
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}
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func (h Help) Set(g *gocui.Gui, x0, y0, x1, y1 int) error {
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var err error
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h.view, err = g.SetView(HELP, x0-1, y0, x1, y1)
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if err != nil {
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if err != gocui.ErrUnknownView {
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return err
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}
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}
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h.view.Frame = false
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fmt.Fprintln(h.view, "lntop 0.0.1 - (C) 2019 Edouard Paris")
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fmt.Fprintln(h.view, "Released under the MIT License")
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fmt.Fprintln(h.view, "")
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fmt.Fprintln(h.view, fmt.Sprintf("%5s %s",
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color.Cyan("F1 h:"), "show this help screen"))
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_, err = g.SetCurrentView(HELP)
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return err
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}
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func NewHelp() *Help { return &Help{} }
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