139 lines
3.1 KiB
Go
139 lines
3.1 KiB
Go
// Package zenity provides cross-platform access to simple dialogs that interact
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// graphically with the user.
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//
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// It is inspired by, and closely follows the API of, the zenity program, which
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// it uses to provide the functionality on various Unixes. See:
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//
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// https://help.gnome.org/users/zenity/stable/
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//
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// This package does not require cgo, and it does not impose any threading or
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// initialization requirements.
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package zenity
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import (
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"context"
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"image/color"
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)
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type stringErr string
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func (e stringErr) Error() string { return string(e) }
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func stringPtr(s string) *string { return &s }
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type options struct {
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// General options
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title *string
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width uint
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height uint
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okLabel *string
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cancelLabel *string
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extraButton *string
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icon DialogIcon
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// Entry options
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entryText string
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hideText bool
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username bool
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// Message options
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noWrap bool
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ellipsize bool
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defaultCancel bool
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// List options
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disallowEmpty bool
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defaultItems []string
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// File selection options
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directory bool
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confirmOverwrite bool
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confirmCreate bool
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showHidden bool
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filename string
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fileFilters []FileFilter
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// Color selection options
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color color.Color
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showPalette bool
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// Context for timeout
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ctx context.Context
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}
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// An Option is an argument passed to dialog functions to customize their
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// behavior.
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type Option interface {
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apply(*options)
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}
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type funcOption func(*options)
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func (f funcOption) apply(o *options) { f(o) }
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func applyOptions(options []Option) (res options) {
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for _, o := range options {
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o.apply(&res)
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}
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return
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}
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// Title returns an Option to set the dialog title.
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func Title(title string) Option {
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return funcOption(func(o *options) { o.title = &title })
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}
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// Width returns an Option to set the dialog width (Unix only).
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func Width(width uint) Option {
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return funcOption(func(o *options) {
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o.width = width
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})
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}
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// Height returns an Option to set the dialog height (Unix only).
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func Height(height uint) Option {
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return funcOption(func(o *options) {
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o.height = height
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})
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}
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// OKLabel returns an Option to set the label of the OK button.
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func OKLabel(ok string) Option {
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return funcOption(func(o *options) { o.okLabel = &ok })
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}
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// CancelLabel returns an Option to set the label of the Cancel button.
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func CancelLabel(cancel string) Option {
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return funcOption(func(o *options) { o.cancelLabel = &cancel })
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}
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// ExtraButton returns an Option to add an extra button.
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func ExtraButton(extra string) Option {
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return funcOption(func(o *options) { o.extraButton = &extra })
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}
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// DialogIcon is the enumeration for dialog icons.
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type DialogIcon int
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// The stock dialog icons.
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const (
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ErrorIcon DialogIcon = iota + 1
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WarningIcon
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InfoIcon
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QuestionIcon
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PasswordIcon
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NoIcon
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)
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// Icon returns an Option to set the dialog icon.
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func Icon(icon DialogIcon) Option {
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return funcOption(func(o *options) { o.icon = icon })
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}
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// Context returns an Option to set a Context that can dismiss the dialog.
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//
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// Dialogs dismissed by the Context return Context.Err.
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func Context(ctx context.Context) Option {
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return funcOption(func(o *options) { o.ctx = ctx })
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}
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