zenity

package module
v0.5.4 Latest Latest
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 Go to latest Published: Mar 4, 2021 License: MIT Imports: 8 Imported by: 130

README

Zenity dialogs for Golang, Windows and macOS

PkgGoDev Go Report

This repo includes both a cross-platform Go package providing Zenity-like dialogs (simple dialogs that interact graphically with the user), as well as a “port” of the zenity command to both Windows and macOS based on that library.

This is a work in progress.

Lots of things are missing. For now, these are the only implemented dialogs:

Behavior on Windows, macOS and other Unixes might differ slightly. Some of that is intended (reflecting platform differences), other bits are unfortunate limitations, others still are open to be fixed.

Why?

There are a bunch of other dialog packages for Go.
Why reinvent this particular wheel?

Benefits:
  • no cgo (see benefits, mostly cross-compilation)
  • no main loop (or any other threading or initialization requirements)
  • cancelation through context
  • on Windows:
    • no additional dependencies
      • Explorer shell not required
      • works in Server Core
    • Unicode support
    • WSL/Cygwin/MSYS2 support
  • on macOS:
    • only dependency is osascript
  • on other Unixes:
    • wraps either one of zenity, qarma, matedialog

Documentation

Overview

Package zenity provides cross-platform access to simple dialogs that interact graphically with the user.

It is inspired by, and closely follows the API of, the zenity program, which it uses to provide the functionality on various Unixes. See:

https://help.gnome.org/users/zenity/stable/

This package does not require cgo, and it does not impose any threading or initialization requirements.

Index

Examples

Constants

View Source 
const ErrExtraButton = stringErr("Extra button pressed")

ErrExtraButton is returned by dialog functions when the extra button is pressed.

Variables

This section is empty.

Functions

func Error 

func Error(text string, options ...Option) (bool, error)

Error displays the error dialog.

Returns true on OK, false on dismiss, or ErrExtraButton.

Valid options: Title, Width, Height, Icon, OKLabel, ExtraButton, NoWrap, Ellipsize.

Example 
package main

import (
	"github.com/ncruces/zenity"
)

func main() {
	zenity.Error("An error has occurred.",
		zenity.Title("Error"),
		zenity.Icon(zenity.ErrorIcon))
}

Output:

func Info 

func Info(text string, options ...Option) (bool, error)

Info displays the info dialog.

Returns true on OK, false on dismiss, or ErrExtraButton.

Valid options: Title, Width, Height, Icon, OKLabel, ExtraButton, NoWrap, Ellipsize.

Example 
package main

import (
	"github.com/ncruces/zenity"
)

func main() {
	zenity.Info("All updates are complete.",
		zenity.Title("Information"),
		zenity.Icon(zenity.InfoIcon))
}

Output:

func Notify added in v0.4.0 

func Notify(text string, options ...Option) error

Notify displays a notification.

Valid options: Title, Icon.

Example 
package main

import (
	"github.com/ncruces/zenity"
)

func main() {
	zenity.Notify("There are system updates necessary!",
		zenity.Title("Warning"),
		zenity.Icon(zenity.InfoIcon))
}

Output:

func Question 

func Question(text string, options ...Option) (bool, error)

Question displays the question dialog.

Returns true on OK, false on Cancel, or ErrExtraButton.

Valid options: Title, Width, Height, Icon, OKLabel, CancelLabel, ExtraButton, NoWrap, Ellipsize, DefaultCancel.

Example 
package main

import (
	"github.com/ncruces/zenity"
)

func main() {
	zenity.Question("Are you sure you want to proceed?",
		zenity.Title("Question"),
		zenity.Icon(zenity.QuestionIcon))
}

Output:

func SelectColor added in v0.2.2 

func SelectColor(options ...Option) (color.Color, error)

SelectColor displays the color selection dialog.

Returns nil on cancel.

Valid options: Title, Color, ShowPalette.

Example 
package main

import (
	"image/color"

	"github.com/ncruces/zenity"
)

func main() {
	zenity.SelectColor(
		zenity.Color(color.NRGBA{R: 0x66, G: 0x33, B: 0x99, A: 0x80}))
}

Output:
Example (Palette) 
package main

import (
	"image/color"

	"github.com/ncruces/zenity"
)

func main() {
	zenity.SelectColor(
		zenity.ShowPalette(),
		zenity.Color(color.NRGBA{R: 0x66, G: 0x33, B: 0x99, A: 0xff}))
}

Output:

func SelectFile 

func SelectFile(options ...Option) (string, error)

SelectFile displays the file selection dialog.

Returns an empty string on cancel.

Valid options: Title, Directory, Filename, ShowHidden, FileFilter(s).

Example 
package main

import (
	"github.com/ncruces/zenity"
)

const defaultPath = ""

func main() {
	zenity.SelectFile(
		zenity.Filename(defaultPath),
		zenity.FileFilters{
			{"Go files", []string{"*.go"}},
			{"Web files", []string{"*.html", "*.js", "*.css"}},
			{"Image files", []string{"*.png", "*.gif", "*.ico", "*.jpg", "*.webp"}},
		})
}

Output:
Example (Directory) 
package main

import (
	"github.com/ncruces/zenity"
)

const defaultPath = ""

func main() {
	zenity.SelectFile(
		zenity.Filename(defaultPath),
		zenity.Directory())
}

Output:

func SelectFileMutiple 

func SelectFileMutiple(options ...Option) ([]string, error)

SelectFileMutiple displays the multiple file selection dialog.

Returns a nil slice on cancel.

Valid options: Title, Directory, Filename, ShowHidden, FileFilter(s).

Example 
package main

import (
	"github.com/ncruces/zenity"
)

const defaultPath = ""

func main() {
	zenity.SelectFileMutiple(
		zenity.Filename(defaultPath),
		zenity.FileFilters{
			{"Go files", []string{"*.go"}},
			{"Web files", []string{"*.html", "*.js", "*.css"}},
			{"Image files", []string{"*.png", "*.gif", "*.ico", "*.jpg", "*.webp"}},
		})
}

Output:
Example (Directory) 
package main

import (
	"github.com/ncruces/zenity"
)

const defaultPath = ""

func main() {
	zenity.SelectFileMutiple(
		zenity.Filename(defaultPath),
		zenity.Directory())
}

Output:

func SelectFileSave 

func SelectFileSave(options ...Option) (string, error)

SelectFileSave displays the save file selection dialog.

Returns an empty string on cancel.

Valid options: Title, Filename, ConfirmOverwrite, ConfirmCreate, ShowHidden, FileFilter(s).

Example 
package main

import (
	"github.com/ncruces/zenity"
)

const defaultName = ""

func main() {
	zenity.SelectFileSave(
		zenity.ConfirmOverwrite(),
		zenity.Filename(defaultName),
		zenity.FileFilters{
			{"Go files", []string{"*.go"}},
			{"Web files", []string{"*.html", "*.js", "*.css"}},
			{"Image files", []string{"*.png", "*.gif", "*.ico", "*.jpg", "*.webp"}},
		})
}

Output:

func Warning 

func Warning(text string, options ...Option) (bool, error)

Warning displays the warning dialog.

Returns true on OK, false on dismiss, or ErrExtraButton.

Valid options: Title, Width, Height, Icon, OKLabel, ExtraButton, NoWrap, Ellipsize.

Example 
package main

import (
	"github.com/ncruces/zenity"
)

func main() {
	zenity.Warning("Are you sure you want to proceed?",
		zenity.Title("Warning"),
		zenity.Icon(zenity.WarningIcon))
}

Output:

Types

type DialogIcon added in v0.4.0 

type DialogIcon int

DialogIcon is the enumeration for dialog icons. 

const (
	ErrorIcon DialogIcon = iota + 1
	WarningIcon
	InfoIcon
	QuestionIcon
	NoIcon
)

The stock dialog icons.

type FileFilter 

type FileFilter struct {
	Name     string   // display string that describes the filter (optional)
	Patterns []string // filter patterns for the display string
}

FileFilter is an Option that sets a filename filter.

macOS hides filename filters from the user, and only supports filtering by extension (or "type").

type FileFilters 

type FileFilters []FileFilter

FileFilters is an Option that sets multiple filename filters.

type Option 

type Option interface {
	// contains filtered or unexported methods
}

An Option is an argument passed to dialog functions to customize their behavior.

func CancelLabel 

func CancelLabel(cancel string) Option

CancelLabel returns an Option to set the label of the Cancel button.

func Color added in v0.2.2 

func Color(c color.Color) Option

Color returns an Option to set the color.

func ConfirmCreate added in v0.2.0 

func ConfirmCreate() Option

ConfirmCreate returns an Option to confirm file selection if filename does not yet exist (Windows only).

func ConfirmOverwrite 

func ConfirmOverwrite() Option

ConfirmOverwrite returns an Option to confirm file selection if filename already exists.

func Context added in v0.4.2 

func Context(ctx context.Context) Option

Context returns an Option to set a Context that can dismiss the dialog.

Dialogs dismissed by the Context return Context.Err.

func DefaultCancel 

func DefaultCancel() Option

DefaultCancel returns an Option to give the Cancel button focus by default.

func Directory 

func Directory() Option

Directory returns an Option to activate directory-only selection.

func Ellipsize 

func Ellipsize() Option

Ellipsize returns an Option to enable ellipsizing in the dialog text (Unix only).

func ExtraButton 

func ExtraButton(extra string) Option

ExtraButton returns an Option to add an extra button.

func Filename 

func Filename(filename string) Option

Filename returns an Option to set the filename.

You can specify a file name, a directory path, or both. Specifying a file name, makes it the default selected file. Specifying a directory path, makes it the default dialog location.

func Height added in v0.5.3 

func Height(height uint) Option

Height returns an Option to set the dialog height (Unix only).

func Icon 

func Icon(icon DialogIcon) Option

Icon returns an Option to set the dialog icon.

func NoWrap 

func NoWrap() Option

NoWrap returns an Option to disable enable text wrapping (Unix only).

func OKLabel 

func OKLabel(ok string) Option

OKLabel returns an Option to set the label of the OK button.

func ShowHidden added in v0.2.0 

func ShowHidden() Option

ShowHidden returns an Option to show hidden files (Windows and macOS only).

func ShowPalette added in v0.2.2 

func ShowPalette() Option

ShowPalette returns an Option to show the palette.

func Title 

func Title(title string) Option

Title returns an Option to set the dialog title.

func Width added in v0.5.3 

func Width(width uint) Option

Width returns an Option to set the dialog width (Unix only).

Source Files

View all Source files

Directories

Path Synopsis
cmd
zenity
internal
zenutil
Package zenutil is internal.
 Package zenutil is internal.

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