podcasts/hammond-gtk/src/widgets/episode_states.rs
2018-02-15 05:31:36 +02:00

700 lines
16 KiB
Rust

// TODO: Things that should be done.
//
// * Wherever there's a function that take 2 or more arguments of the same type,
// eg: fn new(total_size: gtk::Label, local_size: gtk::Label ..)
// Wrap the types into Struct-tuples and imple deref so it won't be possible to pass
// the wrong argument to the wrong position.
use chrono;
use gtk;
use gtk::prelude::*;
#[derive(Debug, Clone)]
pub struct UnInitialized;
#[derive(Debug, Clone)]
pub struct Shown;
#[derive(Debug, Clone)]
pub struct Hidden;
pub trait Visibility {}
impl Visibility for Shown {}
impl Visibility for Hidden {}
impl From<Hidden> for Shown {
fn from(_: Hidden) -> Self {
Shown {}
}
}
impl From<Shown> for Hidden {
fn from(_: Shown) -> Self {
Hidden {}
}
}
impl Into<Hidden> for UnInitialized {
fn into(self) -> Hidden {
Hidden {}
}
}
impl Into<Shown> for UnInitialized {
fn into(self) -> Shown {
Shown {}
}
}
#[derive(Debug, Clone)]
pub struct Normal;
#[derive(Debug, Clone)]
pub struct GreyedOut;
impl From<Normal> for GreyedOut {
fn from(_: Normal) -> Self {
GreyedOut {}
}
}
impl From<GreyedOut> for Normal {
fn from(_: GreyedOut) -> Self {
Normal {}
}
}
#[derive(Debug, Clone)]
pub struct Title<S> {
title: gtk::Label,
state: S,
}
impl<S> Title<S> {
#[allow(unused_must_use)]
// This does not need to be &mut since gtk-rs does not model ownership
// But I think it wouldn't heart if we treat it as a Rust api.
fn set_title(&mut self, s: &str) {
self.title.set_text(s);
}
}
impl Title<Normal> {
fn new(title: gtk::Label) -> Self {
Title {
title,
state: Normal {},
}
}
}
impl From<Title<Normal>> for Title<GreyedOut> {
fn from(f: Title<Normal>) -> Self {
f.title
.get_style_context()
.map(|c| c.add_class("dim-label"));
Title {
title: f.title,
state: f.state.into(),
}
}
}
impl From<Title<GreyedOut>> for Title<Normal> {
fn from(f: Title<GreyedOut>) -> Self {
f.title
.get_style_context()
.map(|c| c.remove_class("dim-label"));
Title {
title: f.title,
state: f.state.into(),
}
}
}
#[derive(Debug, Clone)]
pub enum TitleMachine {
Normal(Title<Normal>),
GreyedOut(Title<GreyedOut>),
}
impl TitleMachine {
pub fn new(label: gtk::Label, is_played: bool) -> Self {
let m = TitleMachine::Normal(Title::<Normal>::new(label));
m.determine_state(is_played)
}
pub fn determine_state(self, is_played: bool) -> Self {
use self::TitleMachine::*;
match (self, is_played) {
(title @ Normal(_), false) => title,
(title @ GreyedOut(_), true) => title,
(Normal(val), true) => GreyedOut(val.into()),
(GreyedOut(val), false) => Normal(val.into()),
}
}
pub fn set_title(&mut self, s: &str) {
use self::TitleMachine::*;
match *self {
Normal(ref mut val) => val.set_title(s),
GreyedOut(ref mut val) => val.set_title(s),
}
}
}
#[derive(Debug, Clone)]
pub struct Duration<S: Visibility> {
// TODO: make duration and separator diff types
duration: gtk::Label,
separator: gtk::Label,
state: S,
}
impl<S: Visibility> Duration<S> {
// This needs a better name.
// TODO: make me mut
fn set_duration(&self, minutes: i64) {
self.duration.set_text(&format!("{} min", minutes));
}
}
impl Duration<Hidden> {
fn new(duration: gtk::Label, separator: gtk::Label) -> Self {
duration.hide();
separator.hide();
Duration {
duration,
separator,
state: Hidden {},
}
}
}
impl From<Duration<Hidden>> for Duration<Shown> {
fn from(f: Duration<Hidden>) -> Self {
f.duration.show();
f.separator.show();
Duration {
duration: f.duration,
separator: f.separator,
state: f.state.into(),
}
}
}
impl From<Duration<Shown>> for Duration<Hidden> {
fn from(f: Duration<Shown>) -> Self {
f.duration.hide();
f.separator.hide();
Duration {
duration: f.duration,
separator: f.separator,
state: f.state.into(),
}
}
}
#[derive(Debug, Clone)]
pub enum DurationMachine {
Hidden(Duration<Hidden>),
Shown(Duration<Shown>),
}
impl DurationMachine {
pub fn new(duration: gtk::Label, separator: gtk::Label, seconds: Option<i32>) -> Self {
let m = DurationMachine::Hidden(Duration::<Hidden>::new(duration, separator));
m.determine_state(seconds)
}
pub fn determine_state(self, seconds: Option<i32>) -> Self {
match (self, seconds) {
(DurationMachine::Hidden(val), None) => DurationMachine::Hidden(val.into()),
(DurationMachine::Shown(val), None) => DurationMachine::Hidden(val.into()),
(DurationMachine::Hidden(val), Some(s)) => {
let minutes = chrono::Duration::seconds(s.into()).num_minutes();
if minutes == 0 {
DurationMachine::Hidden(val.into())
} else {
val.set_duration(minutes);
DurationMachine::Shown(val.into())
}
}
(DurationMachine::Shown(val), Some(s)) => {
let minutes = chrono::Duration::seconds(s.into()).num_minutes();
if minutes == 0 {
DurationMachine::Hidden(val.into())
} else {
val.set_duration(minutes);
DurationMachine::Shown(val.into())
}
}
}
}
}
#[derive(Debug, Clone)]
pub struct Size<S> {
size: gtk::Label,
separator: gtk::Label,
state: S,
}
impl Size<Shown> {
fn set_size(self, s: &str) -> Size<Shown> {
self.size.set_text(s);
self.separator.show();
self.into()
}
}
impl Size<Hidden> {
fn set_size(self, s: &str) -> Size<Shown> {
self.size.set_text(s);
self.separator.show();
self.into()
}
}
impl Size<UnInitialized> {
fn new(size: gtk::Label, separator: gtk::Label) -> Self {
size.hide();
separator.hide();
Size {
size,
separator,
state: UnInitialized {},
}
}
fn set_size(self, s: &str) -> Size<Shown> {
self.size.set_text(s);
self.separator.show();
self.into()
}
}
impl From<Size<Shown>> for Size<Hidden> {
fn from(f: Size<Shown>) -> Self {
f.size.hide();
f.separator.hide();
Size {
size: f.size,
separator: f.separator,
state: f.state.into(),
}
}
}
impl From<Size<Hidden>> for Size<Shown> {
fn from(f: Size<Hidden>) -> Self {
f.size.show();
f.separator.show();
Size {
size: f.size,
separator: f.separator,
state: f.state.into(),
}
}
}
impl From<Size<UnInitialized>> for Size<Shown> {
/// This is suposed to be called only from Size::<UnInitialized>::set_size.
fn from(f: Size<UnInitialized>) -> Self {
f.size.show();
f.separator.show();
Size {
size: f.size,
separator: f.separator,
state: f.state.into(),
}
}
}
impl From<Size<UnInitialized>> for Size<Hidden> {
/// This is suposed to be called only from Size::<UnInitialized>::set_size.
fn from(f: Size<UnInitialized>) -> Self {
f.size.hide();
f.separator.hide();
Size {
size: f.size,
separator: f.separator,
state: f.state.into(),
}
}
}
#[derive(Debug, Clone)]
pub struct Download;
#[derive(Debug, Clone)]
pub struct Play;
#[derive(Debug, Clone)]
// FIXME: Needs better name.
// Should each button also has it's own type and machine?
pub struct DownloadPlay<S> {
play: gtk::Button,
download: gtk::Button,
state: S,
}
impl DownloadPlay<UnInitialized> {
fn new(play: gtk::Button, download: gtk::Button) -> Self {
play.hide();
download.hide();
DownloadPlay {
play,
download,
state: UnInitialized {},
}
}
}
impl From<DownloadPlay<Play>> for DownloadPlay<Download> {
fn from(f: DownloadPlay<Play>) -> Self {
f.play.hide();
f.download.show();
DownloadPlay {
play: f.play,
download: f.download,
state: Download {},
}
}
}
impl From<DownloadPlay<Download>> for DownloadPlay<Play> {
fn from(f: DownloadPlay<Download>) -> Self {
f.play.show();
f.download.hide();
DownloadPlay {
play: f.play,
download: f.download,
state: Play {},
}
}
}
impl From<DownloadPlay<Play>> for DownloadPlay<Hidden> {
fn from(f: DownloadPlay<Play>) -> Self {
f.play.hide();
f.download.hide();
DownloadPlay {
play: f.play,
download: f.download,
state: Hidden {},
}
}
}
impl From<DownloadPlay<Download>> for DownloadPlay<Hidden> {
fn from(f: DownloadPlay<Download>) -> Self {
f.play.hide();
f.download.hide();
DownloadPlay {
play: f.play,
download: f.download,
state: Hidden {},
}
}
}
impl From<DownloadPlay<Hidden>> for DownloadPlay<Download> {
fn from(f: DownloadPlay<Hidden>) -> Self {
f.play.hide();
f.download.show();
DownloadPlay {
play: f.play,
download: f.download,
state: Download {},
}
}
}
impl From<DownloadPlay<Hidden>> for DownloadPlay<Play> {
fn from(f: DownloadPlay<Hidden>) -> Self {
f.play.show();
f.download.show();
DownloadPlay {
play: f.play,
download: f.download,
state: Play {},
}
}
}
impl From<DownloadPlay<UnInitialized>> for DownloadPlay<Download> {
fn from(f: DownloadPlay<UnInitialized>) -> Self {
f.play.hide();
f.download.show();
DownloadPlay {
play: f.play,
download: f.download,
state: Download {},
}
}
}
impl From<DownloadPlay<UnInitialized>> for DownloadPlay<Play> {
fn from(f: DownloadPlay<UnInitialized>) -> Self {
f.play.show();
f.download.show();
DownloadPlay {
play: f.play,
download: f.download,
state: Play {},
}
}
}
impl From<DownloadPlay<UnInitialized>> for DownloadPlay<Hidden> {
fn from(f: DownloadPlay<UnInitialized>) -> Self {
f.play.hide();
f.download.hide();
DownloadPlay {
play: f.play,
download: f.download,
state: Hidden {},
}
}
}
#[derive(Debug, Clone)]
pub struct Progress<S> {
bar: gtk::ProgressBar,
cancel: gtk::Button,
local_size: gtk::Label,
prog_separator: gtk::Label,
state: S,
}
impl Progress<UnInitialized> {
fn new(
bar: gtk::ProgressBar,
cancel: gtk::Button,
local_size: gtk::Label,
prog_separator: gtk::Label,
) -> Self {
bar.hide();
cancel.hide();
local_size.hide();
prog_separator.hide();
Progress {
bar,
cancel,
local_size,
prog_separator,
state: UnInitialized {},
}
}
}
impl From<Progress<Hidden>> for Progress<Shown> {
fn from(f: Progress<Hidden>) -> Self {
f.bar.show();
f.cancel.show();
f.local_size.show();
f.prog_separator.show();
Progress {
bar: f.bar,
cancel: f.cancel,
local_size: f.local_size,
prog_separator: f.prog_separator,
state: Shown {},
}
}
}
impl From<Progress<Shown>> for Progress<Hidden> {
fn from(f: Progress<Shown>) -> Self {
f.bar.hide();
f.cancel.hide();
f.local_size.hide();
f.prog_separator.hide();
Progress {
bar: f.bar,
cancel: f.cancel,
local_size: f.local_size,
prog_separator: f.prog_separator,
state: Hidden {},
}
}
}
impl From<Progress<UnInitialized>> for Progress<Shown> {
fn from(f: Progress<UnInitialized>) -> Self {
f.bar.show();
f.cancel.show();
f.local_size.show();
f.prog_separator.show();
Progress {
bar: f.bar,
cancel: f.cancel,
local_size: f.local_size,
prog_separator: f.prog_separator,
state: Shown {},
}
}
}
impl From<Progress<UnInitialized>> for Progress<Hidden> {
fn from(f: Progress<UnInitialized>) -> Self {
f.bar.hide();
f.cancel.hide();
f.local_size.hide();
f.prog_separator.hide();
Progress {
bar: f.bar,
cancel: f.cancel,
local_size: f.local_size,
prog_separator: f.prog_separator,
state: Hidden {},
}
}
}
#[derive(Debug, Clone)]
pub struct Media<X, Y, Z> {
dl: DownloadPlay<X>,
size: Size<Y>,
progress: Progress<Z>,
}
// From New from InProgress
impl From<Media<Download, Hidden, Shown>> for Media<Hidden, Shown, Shown> {
fn from(f: Media<Download, Hidden, Shown>) -> Self {
Media {
dl: f.dl.into(),
size: f.size.into(),
progress: f.progress.into(),
}
}
}
// From NewWithoutSize from InProgress
impl From<Media<Download, Hidden, Hidden>> for Media<Hidden, Shown, Shown> {
fn from(f: Media<Download, Hidden, Hidden>) -> Self {
Media {
dl: f.dl.into(),
size: f.size.into(),
progress: f.progress.into(),
}
}
}
// Into New
impl Into<Media<Download, Hidden, Shown>> for Media<UnInitialized, UnInitialized, UnInitialized> {
fn into(self) -> Media<Download, Hidden, Shown> {
Media {
dl: self.dl.into(),
size: self.size.into(),
progress: self.progress.into(),
}
}
}
// Into NewWithoutSize
impl Into<Media<Download, Hidden, Hidden>> for Media<UnInitialized, UnInitialized, UnInitialized> {
fn into(self) -> Media<Download, Hidden, Hidden> {
Media {
dl: self.dl.into(),
size: self.size.into(),
progress: self.progress.into(),
}
}
}
// Into Playable
impl Into<Media<Play, Hidden, Shown>> for Media<UnInitialized, UnInitialized, UnInitialized> {
fn into(self) -> Media<Play, Hidden, Shown> {
Media {
dl: self.dl.into(),
size: self.size.into(),
progress: self.progress.into(),
}
}
}
// Into PlayableWithoutSize
impl Into<Media<Play, Hidden, Hidden>> for Media<UnInitialized, UnInitialized, UnInitialized> {
fn into(self) -> Media<Play, Hidden, Hidden> {
Media {
dl: self.dl.into(),
size: self.size.into(),
progress: self.progress.into(),
}
}
}
// Into InProgress
impl Into<Media<Hidden, Shown, Shown>> for Media<UnInitialized, UnInitialized, UnInitialized> {
fn into(self) -> Media<Hidden, Shown, Shown> {
Media {
dl: self.dl.into(),
size: self.size.into(),
progress: self.progress.into(),
}
}
}
#[derive(Debug, Clone)]
pub enum MediaMachine {
UnInitialized(Media<UnInitialized, UnInitialized, UnInitialized>),
New(Media<Download, Shown, Hidden>),
NewWithoutSize(Media<Download, Hidden, Hidden>),
Playable(Media<Play, Shown, Hidden>),
PlayableWithoutSize(Media<Play, Hidden, Hidden>),
InProgress(Media<Hidden, Shown, Shown>),
}
impl MediaMachine {
pub fn new(
play: gtk::Button,
download: gtk::Button,
bar: gtk::ProgressBar,
cancel: gtk::Button,
total_size: gtk::Label,
local_size: gtk::Label,
separator: gtk::Label,
prog_separator: gtk::Label,
) -> Self {
let dl = DownloadPlay::<UnInitialized>::new(play, download);
let progress = Progress::<UnInitialized>::new(bar, cancel, local_size, prog_separator);
let size = Size::<UnInitialized>::new(total_size, separator);
MediaMachine::UnInitialized(Media { dl, progress, size })
}
pub fn determine_state(self, is_downloaded: bool, is_active: bool) -> Self {
// use self::MediaMachine::*;
unimplemented!()
}
}