87 lines
2.5 KiB
Go
87 lines
2.5 KiB
Go
package password
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import (
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"github.com/ayn2op/tview"
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"github.com/ayn2op/tview/button"
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"github.com/ayn2op/tview/column"
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"github.com/ayn2op/tview/layout"
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"github.com/ayn2op/tview/row"
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"github.com/ayn2op/tview/text"
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"github.com/ayn2op/tview/textinput"
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"github.com/gdamore/tcell/v3"
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)
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// focus is the input or button that receives keys.
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type focus int
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const (
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focusLogin focus = iota
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focusPassword
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focusButton
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focusCount
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)
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// Model is a login and a password input above a button. Tab and the arrow keys move the focus, Enter in an input moves to the next one, and Enter on the button or clicking it logs in.
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type Model struct {
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login, password string
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// loginCursor and passwordCursor are the byte offsets of the cursor in login and password.
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loginCursor, passwordCursor int
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focus focus
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}
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var _ tview.Model[Model] = Model{}
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func (Model) Label() string {
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return "Password"
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}
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func (Model) Init() tview.Cmd { return nil }
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func (m Model) Update(msg tview.Msg) (Model, tview.Cmd) {
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switch msg := msg.(type) {
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case loginMsg:
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m.login, m.loginCursor = msg.text, msg.cursor
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case passwordMsg:
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m.password, m.passwordCursor = msg.text, msg.cursor
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case focusMsg:
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m.focus = focus(msg)
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case tview.KeyMsg:
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switch msg.Key() {
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case tcell.KeyTab, tcell.KeyDown:
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m.focus = (m.focus + 1) % focusCount
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case tcell.KeyBacktab, tcell.KeyUp:
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m.focus = (m.focus + focusCount - 1) % focusCount
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}
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case submitMsg:
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if m.login == "" || m.password == "" {
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return m, nil
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}
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return m, submitLogin(m.login, m.password)
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}
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return m, nil
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}
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func (m Model) View() tview.Widget {
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labelWidth := layout.Fixed(len("Password") + 1)
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login := textinput.New(m.login, m.loginCursor).
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Focused(m.focus == focusLogin).
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OnInput(func(text string, cursor int) tview.Msg { return loginMsg{text, cursor} }).
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OnSubmit(focusMsg(focusPassword))
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password := textinput.New(m.password, m.passwordCursor).
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Mask("*").
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Focused(m.focus == focusPassword).
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OnInput(func(text string, cursor int) tview.Msg { return passwordMsg{text, cursor} }).
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OnSubmit(focusMsg(focusButton))
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submit := button.New().
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Label("Login").
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Width(layout.Fixed(len("Login") + 4)).
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Height(layout.Fixed(1)).
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Focused(m.focus == focusButton).
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OnClick(submitMsg{})
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return column.New(
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row.New(column.New(text.New("Login")).Width(labelWidth), login).Height(layout.Shrink),
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row.New(column.New(text.New("Password")).Width(labelWidth), password).Height(layout.Shrink),
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submit,
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).Spacing(1).Align(tview.AlignmentCenter)
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}
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