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use jiff::civil::{Date, Weekday};
use egui::{Align, Button, Color32, ComboBox, Direction, Id, Layout, RichText, Ui, Vec2};
use super::{button::DatePickerButtonState, month_data};
use crate::{Column, Size, StripBuilder, TableBuilder};
#[derive(Default, Clone)]
#[cfg_attr(feature = "serde", derive(serde::Deserialize, serde::Serialize))]
struct DatePickerPopupState {
year: i16,
month: i8,
day: i8,
setup: bool,
year_scroll_needed: bool,
}
impl DatePickerPopupState {
fn last_day_of_month(&self) -> i8 {
Date::new(self.year, self.month, 1)
.expect("Could not create Date")
.days_in_month()
}
}
pub(crate) struct DatePickerPopup<'a> {
pub selection: &'a mut Date,
pub button_id: Id,
pub combo_boxes: bool,
pub arrows: bool,
pub calendar: bool,
pub calendar_week: bool,
pub highlight_weekends: bool,
pub start_end_years: Option<std::ops::RangeInclusive<i16>>,
pub reverse_years: bool,
pub year_scroll_to: Option<i16>,
}
impl DatePickerPopup<'_> {
/// Returns `true` if user pressed `Save` button.
pub fn draw(&mut self, ui: &mut Ui) -> bool {
let id = ui.make_persistent_id("date_picker");
let today = jiff::Zoned::now().date();
let mut popup_state = ui
.data_mut(|data| data.get_persisted::<DatePickerPopupState>(id))
.unwrap_or_default();
if !popup_state.setup {
popup_state.year = self.selection.year();
popup_state.month = self.selection.month();
popup_state.day = self.selection.day();
popup_state.setup = true;
popup_state.year_scroll_needed = true;
ui.data_mut(|data| data.insert_persisted(id, popup_state.clone()));
}
let weeks = month_data(popup_state.year, popup_state.month);
let (mut close, mut saved) = (false, false);
let height = 20.0;
let spacing = 2.0;
ui.spacing_mut().item_spacing = Vec2::splat(spacing);
ui.style_mut().wrap_mode = Some(egui::TextWrapMode::Extend);
StripBuilder::new(ui)
.clip(false)
.sizes(
Size::exact(height),
match (self.combo_boxes, self.arrows) {
(true, true) => 2,
(true, false) | (false, true) => 1,
(false, false) => 0,
},
)
.sizes(
Size::exact((spacing + height) * (weeks.len() + 1) as f32),
self.calendar as usize,
)
.size(Size::exact(height))
.vertical(|mut strip| {
if self.combo_boxes {
strip.strip(|builder| {
builder.sizes(Size::remainder(), 3).horizontal(|mut strip| {
strip.cell(|ui| {
ComboBox::from_id_salt("date_picker_year")
.selected_text(popup_state.year.to_string())
.show_ui(ui, |ui| {
let (start_year, end_year) = match &self.start_end_years {
Some(range) => (*range.start(), *range.end()),
None => (today.year() - 100, today.year() + 10),
};
let scroll_to_year =
self.year_scroll_to.unwrap_or(popup_state.year);
let years: Vec<i16> = if self.reverse_years {
(start_year..=end_year).rev().collect()
} else {
(start_year..=end_year).collect()
};
for year in years {
let resp = ui.selectable_value(
&mut popup_state.year,
year,
year.to_string(),
);
if popup_state.year_scroll_needed
&& year == scroll_to_year
{
resp.scroll_to_me(Some(Align::Center));
popup_state.year_scroll_needed = false;
ui.memory_mut(|mem| {
mem.data
.insert_persisted(id, popup_state.clone());
});
}
if resp.changed() {
popup_state.day = popup_state
.day
.min(popup_state.last_day_of_month());
ui.memory_mut(|mem| {
mem.data
.insert_persisted(id, popup_state.clone());
});
}
}
});
});
strip.cell(|ui| {
ComboBox::from_id_salt("date_picker_month")
.selected_text(month_name(popup_state.month))
.show_ui(ui, |ui| {
for month in 1i8..=12 {
if ui
.selectable_value(
&mut popup_state.month,
month,
month_name(month),
)
.changed()
{
popup_state.day = popup_state
.day
.min(popup_state.last_day_of_month());
ui.memory_mut(|mem| {
mem.data
.insert_persisted(id, popup_state.clone());
});
}
}
});
});
strip.cell(|ui| {
ComboBox::from_id_salt("date_picker_day")
.selected_text(popup_state.day.to_string())
.show_ui(ui, |ui| {
for day in 1i8..=popup_state.last_day_of_month() {
if ui
.selectable_value(
&mut popup_state.day,
day,
day.to_string(),
)
.changed()
{
ui.memory_mut(|mem| {
mem.data
.insert_persisted(id, popup_state.clone());
});
}
}
});
});
});
});
}
if self.arrows {
strip.strip(|builder| {
builder.sizes(Size::remainder(), 6).horizontal(|mut strip| {
strip.cell(|ui| {
ui.with_layout(Layout::top_down_justified(Align::Center), |ui| {
if ui
.button("<<<")
.on_hover_text("subtract one year")
.clicked()
{
popup_state.year -= 1;
popup_state.day =
popup_state.day.min(popup_state.last_day_of_month());
ui.data_mut(|data| {
data.insert_persisted(id, popup_state.clone());
});
}
});
});
strip.cell(|ui| {
ui.with_layout(Layout::top_down_justified(Align::Center), |ui| {
if ui
.button("<<")
.on_hover_text("subtract one month")
.clicked()
{
popup_state.month -= 1;
if popup_state.month == 0 {
popup_state.month = 12;
popup_state.year -= 1;
}
popup_state.day =
popup_state.day.min(popup_state.last_day_of_month());
ui.data_mut(|data| {
data.insert_persisted(id, popup_state.clone());
});
}
});
});
strip.cell(|ui| {
ui.with_layout(Layout::top_down_justified(Align::Center), |ui| {
if ui.button("<").on_hover_text("subtract one day").clicked() {
popup_state.day -= 1;
if popup_state.day == 0 {
popup_state.month -= 1;
if popup_state.month == 0 {
popup_state.year -= 1;
popup_state.month = 12;
}
popup_state.day = popup_state.last_day_of_month();
}
ui.data_mut(|data| {
data.insert_persisted(id, popup_state.clone());
});
}
});
});
strip.cell(|ui| {
ui.with_layout(Layout::top_down_justified(Align::Center), |ui| {
if ui.button(">").on_hover_text("add one day").clicked() {
popup_state.day += 1;
if popup_state.day > popup_state.last_day_of_month() {
popup_state.day = 1;
popup_state.month += 1;
if popup_state.month > 12 {
popup_state.month = 1;
popup_state.year += 1;
}
}
ui.data_mut(|data| {
data.insert_persisted(id, popup_state.clone());
});
}
});
});
strip.cell(|ui| {
ui.with_layout(Layout::top_down_justified(Align::Center), |ui| {
if ui.button(">>").on_hover_text("add one month").clicked() {
popup_state.month += 1;
if popup_state.month > 12 {
popup_state.month = 1;
popup_state.year += 1;
}
popup_state.day =
popup_state.day.min(popup_state.last_day_of_month());
ui.data_mut(|data| {
data.insert_persisted(id, popup_state.clone());
});
}
});
});
strip.cell(|ui| {
ui.with_layout(Layout::top_down_justified(Align::Center), |ui| {
if ui.button(">>>").on_hover_text("add one year").clicked() {
popup_state.year += 1;
popup_state.day =
popup_state.day.min(popup_state.last_day_of_month());
ui.data_mut(|data| {
data.insert_persisted(id, popup_state.clone());
});
}
});
});
});
});
}
if self.calendar {
strip.cell(|ui| {
ui.spacing_mut().item_spacing = Vec2::new(1.0, 2.0);
TableBuilder::new(ui)
.vscroll(false)
.columns(Column::remainder(), if self.calendar_week { 8 } else { 7 })
.header(height, |mut header| {
if self.calendar_week {
header.col(|ui| {
ui.with_layout(
Layout::centered_and_justified(Direction::TopDown),
|ui| {
ui.label("Week");
},
);
});
}
//TODO(elwerene): Locale
for name in ["Mo", "Tu", "We", "Th", "Fr", "Sa", "Su"] {
header.col(|ui| {
ui.with_layout(
Layout::centered_and_justified(Direction::TopDown),
|ui| {
ui.label(name);
},
);
});
}
})
.body(|mut body| {
for week in weeks {
body.row(height, |mut row| {
if self.calendar_week {
row.col(|ui| {
ui.label(week.number.to_string());
});
}
for day in week.days {
row.col(|ui| {
ui.with_layout(
Layout::top_down_justified(Align::Center),
|ui| {
let fill_color = if popup_state.year
== day.year()
&& popup_state.month == day.month()
&& popup_state.day == day.day()
{
ui.visuals().selection.bg_fill
} else if (matches!(
day.weekday(),
Weekday::Saturday | Weekday::Sunday
)) && self.highlight_weekends
{
if ui.visuals().dark_mode {
Color32::DARK_RED
} else {
Color32::LIGHT_RED
}
} else {
ui.visuals().extreme_bg_color
};
let mut text_color = ui
.visuals()
.widgets
.inactive
.text_color();
if day.month() != popup_state.month {
text_color =
text_color.linear_multiply(0.5);
}
let button_response = ui.add(
Button::new(
RichText::new(
day.day().to_string(),
)
.color(text_color),
)
.fill(fill_color),
);
if day == today {
let stroke = ui
.visuals()
.widgets
.inactive
.fg_stroke;
ui.painter().circle_stroke(
button_response.rect.center(),
8.0,
stroke,
);
}
if button_response.clicked() {
popup_state.year = day.year();
popup_state.month = day.month();
popup_state.day = day.day();
ui.data_mut(|data| {
data.insert_persisted(
id,
popup_state.clone(),
);
});
}
},
);
});
}
});
}
});
});
}
strip.strip(|builder| {
builder.sizes(Size::remainder(), 3).horizontal(|mut strip| {
strip.empty();
strip.cell(|ui| {
ui.with_layout(Layout::top_down_justified(Align::Center), |ui| {
if ui.button("Cancel").clicked() {
close = true;
}
});
});
strip.cell(|ui| {
ui.with_layout(Layout::top_down_justified(Align::Center), |ui| {
if ui.button("Save").clicked() {
*self.selection = Date::new(
popup_state.year,
popup_state.month,
popup_state.day,
)
.expect("Could not create Date");
saved = true;
close = true;
}
});
});
});
});
});
if close {
popup_state.setup = false;
ui.data_mut(|data| {
data.insert_persisted(id, popup_state);
data.get_persisted_mut_or_default::<DatePickerButtonState>(self.button_id)
.picker_visible = false;
});
}
saved && close
}
}
fn month_name(i: i8) -> &'static str {
match i {
1 => "January",
2 => "February",
3 => "March",
4 => "April",
5 => "May",
6 => "June",
7 => "July",
8 => "August",
9 => "September",
10 => "October",
11 => "November",
12 => "December",
_ => panic!("Unknown month: {i}"),
}
}