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use crate::Klask;
use clap::{Arg, ArgSettings, ValueHint};
use eframe::egui::{widgets::Widget, ComboBox, Response, TextEdit, Ui};
use inflector::Inflector;
use native_dialog::FileDialog;
use uuid::Uuid;
#[derive(Debug, Clone)]
pub struct ArgState {
pub name: String,
pub call_name: Option<String>,
pub desc: Option<String>,
pub optional: bool,
pub use_equals: bool,
pub forbid_empty: bool,
pub kind: ArgKind,
pub validation_error: Option<String>,
}
#[derive(Debug, Clone)]
pub enum ArgKind {
String {
value: (String, Uuid),
default: Option<String>,
possible: Vec<String>,
value_hint: ValueHint,
},
MultipleStrings {
values: Vec<(String, Uuid)>,
default: Vec<String>,
possible: Vec<String>,
multiple_values: bool,
multiple_occurrences: bool,
use_delimiter: bool,
req_delimiter: bool,
value_hint: ValueHint,
},
Occurences(i32),
Bool(bool),
}
impl ArgState {
pub fn new(arg: &Arg) -> Self {
let kind = if arg.is_set(ArgSettings::TakesValue) {
let mut default = arg
.get_default_values()
.iter()
.map(|s| s.to_string_lossy().into_owned());
let possible = arg
.get_possible_values()
.unwrap_or_default()
.iter()
.map(|v| v.get_name().to_string())
.collect();
let multiple_values = arg.is_set(ArgSettings::MultipleValues);
let multiple_occurrences = arg.is_set(ArgSettings::MultipleOccurrences);
if multiple_occurrences | multiple_values {
ArgKind::MultipleStrings {
values: vec![],
default: default.collect(),
possible,
multiple_values,
multiple_occurrences,
use_delimiter: arg.is_set(ArgSettings::UseValueDelimiter)
| arg.is_set(ArgSettings::RequireDelimiter),
req_delimiter: arg.is_set(ArgSettings::RequireDelimiter),
value_hint: arg.get_value_hint(),
}
} else {
ArgKind::String {
value: ("".to_string(), Uuid::new_v4()),
default: default.next(),
possible,
value_hint: arg.get_value_hint(),
}
}
} else if arg.is_set(ArgSettings::MultipleOccurrences) {
ArgKind::Occurences(0)
} else {
ArgKind::Bool(false)
};
Self {
name: arg.get_name().to_string().to_sentence_case(),
call_name: arg
.get_long()
.map(|s| format!("--{}", s))
.or_else(|| arg.get_short().map(|c| format!("-{}", c))),
desc: arg
.get_long_help()
.map(ToString::to_string)
.or_else(|| arg.get_help().map(ToString::to_string)),
optional: !arg.is_set(ArgSettings::Required),
use_equals: arg.is_set(ArgSettings::RequireEquals),
forbid_empty: arg.is_set(ArgSettings::ForbidEmptyValues),
kind,
validation_error: None,
}
}
pub fn update_validation_error(&mut self, name: &str, message: &str) {
self.validation_error = (self.name == name).then(|| message.to_string());
}
pub fn ui_single_row(
ui: &mut Ui,
(value, id): &mut (String, Uuid),
default: &Option<String>,
possible: &[String],
value_hint: ValueHint,
optional: bool,
validation_error: bool,
) -> Response {
let is_error = (!optional && value.is_empty()) || validation_error;
if is_error {
ui.set_style(Klask::error_style());
}
let inner_response = if possible.is_empty() {
ui.horizontal(|ui| {
if matches!(
value_hint,
ValueHint::AnyPath | ValueHint::FilePath | ValueHint::ExecutablePath
) && ui.button("Select file...").clicked()
{
if let Some(file) = FileDialog::new().show_open_single_file().ok().flatten() {
*value = file.to_string_lossy().into_owned();
}
}
if matches!(value_hint, ValueHint::AnyPath | ValueHint::DirPath)
&& ui.button("Select directory...").clicked()
{
if let Some(file) = FileDialog::new().show_open_single_dir().ok().flatten() {
*value = file.to_string_lossy().into_owned();
}
}
ui.add(
TextEdit::singleline(value).hint_text(match (default, optional) {
(Some(default), _) => default.as_str(),
(_, true) => "(Optional)",
(_, false) => "",
}),
);
Some(())
})
} else {
ComboBox::from_id_source(id)
.selected_text(&value)
.show_ui(ui, |ui| {
if optional {
ui.selectable_value(value, String::new(), "None");
}
for p in possible {
ui.selectable_value(value, p.clone(), p);
}
})
};
if is_error {
ui.set_style(Klask::klask_style());
}
inner_response.response
}
pub fn get_cmd_args(&self, mut args: Vec<String>) -> Result<Vec<String>, String> {
match &self.kind {
ArgKind::String {
value: (value, _), ..
} => {
if !value.is_empty() {
if let Some(call_name) = self.call_name.as_ref() {
if self.use_equals {
args.push(format!("{}={}", call_name, value));
} else {
args.extend_from_slice(&[call_name.clone(), value.clone()]);
}
} else {
args.push(value.clone());
}
} else if !self.optional {
return Err(format!("{} is required.", self.name));
}
}
ArgKind::MultipleStrings {
values,
multiple_values,
multiple_occurrences,
use_delimiter,
req_delimiter,
..
} => {
if !values.is_empty() {
if let Some(call_name) = &self.call_name {
let single = *use_delimiter || values.len() == 1;
match (
self.use_equals,
*multiple_values,
*multiple_occurrences,
single,
) {
(true, true, _, true) => {
args.push(format!(
"{}={}",
call_name,
&values
.iter()
.map(|(s, _)| format!(",{}", s))
.collect::<String>()[1..]
));
}
(false, true, _, _) => {
args.push(call_name.clone());
if *req_delimiter {
args.push(
(&values
.iter()
.map(|(s, _)| format!(",{}", s))
.collect::<String>()[1..])
.to_string(),
);
} else {
for value in values {
args.push(value.0.clone());
}
}
}
(true, _, true, _) => {
for value in values {
args.push(format!("{}={}", call_name, value.0));
}
}
(false, _, true, _) => {
for value in values {
args.extend_from_slice(&[call_name.clone(), value.0.clone()]);
}
}
(_, false, false, _) => unreachable!(
"Either multiple_values or multiple_occurrences must be true"
),
(true, true, false, false) => return Err("Can't be represented".into()),
}
} else {
for value in values {
args.push(value.0.clone());
}
}
}
}
&ArgKind::Occurences(i) => {
for _ in 0..i {
args.push(
self.call_name
.clone()
.ok_or_else(|| "Internal error.".to_string())?,
);
}
}
&ArgKind::Bool(bool) => {
if bool {
args.push(
self.call_name
.clone()
.ok_or_else(|| "Internal error.".to_string())?,
);
}
}
}
Ok(args)
}
}
impl Widget for &mut ArgState {
fn ui(self, ui: &mut Ui) -> eframe::egui::Response {
let label = ui.label(&self.name);
if let Some(desc) = &self.desc {
label.on_hover_text(desc);
}
// Grid column automatically switches here
let is_validation_error = self.validation_error.is_some();
match &mut self.kind {
ArgKind::String {
value,
default,
possible,
value_hint,
} => ArgState::ui_single_row(
ui,
value,
default,
possible,
*value_hint,
self.optional && !self.forbid_empty,
is_validation_error,
),
ArgKind::MultipleStrings {
values,
default,
possible,
value_hint,
..
} => {
let forbid_empty = self.forbid_empty;
let mut list = ui
.vertical(|ui| {
let mut remove_index = None;
for (index, value) in values.iter_mut().enumerate() {
ui.horizontal(|ui| {
if ui.small_button("-").clicked() {
remove_index = Some(index);
}
ArgState::ui_single_row(
ui,
value,
&None,
possible,
*value_hint,
!forbid_empty,
is_validation_error,
);
});
}
if let Some(index) = remove_index {
values.remove(index);
}
ui.horizontal(|ui| {
if ui.button("New value").clicked() {
values.push(("".into(), Uuid::new_v4()));
}
let text = if default.is_empty() {
"Reset"
} else {
"Reset to default"
};
ui.add_space(20.0);
if ui.button(text).clicked() {
*values = default
.iter()
.map(|s| (s.to_string(), Uuid::new_v4()))
.collect();
}
});
})
.response;
if let Some(message) = &mut self.validation_error {
list = list.on_hover_text(message);
if list.changed() {
self.validation_error = None;
}
}
list
}
ArgKind::Occurences(i) => {
ui.horizontal(|ui| {
if ui.small_button("-").clicked() {
*i = (*i - 1).max(0);
}
ui.label(i.to_string());
if ui.small_button("+").clicked() {
*i += 1;
}
})
.response
}
ArgKind::Bool(bool) => ui.checkbox(bool, ""),
}
}
}