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use std::sync::Mutex;
use iced::widget::{Button, Image, PickList, QRCode, Rule, Space, Svg, Themer, Toggler};
use iced::{widget::Text, Element};
use iced::{Length, Pixels, Theme};
use once_cell::sync::Lazy;
use tracing::{debug, info};
use crate::data::{DataProvider, DataType};
use crate::error::ConversionError;
use crate::message::Message;
use crate::parser::Attributes;
use crate::parser::Value;
use crate::{Error, MarkupTree};
pub struct SnowcapWidget;
impl SnowcapWidget {
pub fn convert<'a, SnowcapMessage, AppMessage>(
name: &String,
attrs: &'a Attributes,
content: &'a MarkupTree<AppMessage>,
) -> Result<Element<'a, SnowcapMessage>, Error>
where
SnowcapMessage: 'a + Clone + From<Message<AppMessage>>,
AppMessage: 'a + Clone + std::fmt::Debug,
{
match name.as_str() {
"text" => {
let mut text = Text::new(content);
for attr in attrs {
match attr.name().as_str() {
"size" => {
let pixels: iced::Pixels = attr.try_into()?;
text = text.size(pixels);
}
_ => {}
};
}
Ok(text.into())
}
"space" => {
let width: Length = if let Some(width) = attrs.get("width") {
width.try_into()?
} else {
Length::Fixed(0.0)
};
let height: Length = if let Some(height) = attrs.get("height") {
height.try_into()?
} else {
Length::Fixed(0.0)
};
let space = Space::new(width, height);
Ok(space.into())
}
"button" => {
let content: Element<'a, SnowcapMessage> = content.try_into()?;
let button =
Button::new(content).on_press_with(|| SnowcapMessage::from(Message::Button));
Ok(button.into())
}
"rule-horizontal" => {
let height: Pixels = attrs
.get("height")
.ok_or_else(|| Error::MissingAttribute("height".to_string()))?
.try_into()?;
debug!("[Rule horizontal height={height:?}]");
Ok(Rule::horizontal(height).into())
}
"rule-vertical" => {
let width: Pixels = attrs
.get("width")
.ok_or_else(|| Error::MissingAttribute("height".to_string()))?
.try_into()?;
Ok(Rule::vertical(width).into())
}
"toggler" => {
let is_toggled: bool = if let Some(width) = attrs.get("toggled") {
width.try_into()?
} else {
false
};
let mut toggler = Toggler::new(is_toggled).on_toggle(|toggled| {
attrs.set("toggled", Value::Boolean(toggled));
SnowcapMessage::from(Message::Toggler(toggled))
});
for attr in attrs {
toggler = match attr.name().as_str() {
"size" => {
let pixels: iced::Pixels = attr.try_into()?;
toggler.size(pixels)
}
"label" => toggler.label(attr),
_ => toggler,
};
}
Ok(toggler.into())
}
"qr-code" => {
if let MarkupTree::Value(Value::DataSource {
name: _,
value: _,
provider,
}) = content
{
let mut qr: QRCode = QRCode::new(provider.try_into()?);
for attr in attrs {
qr = match attr.name().as_str() {
"cell-size" => {
let cell_size: u16 = attr.try_into()?;
qr.cell_size(cell_size)
}
_ => qr,
};
}
Ok(qr.into())
} else {
Err(Error::Conversion(ConversionError::Missing("data".into())))
}
}
"markdown" => {
if let MarkupTree::Value(Value::DataSource {
name: _,
value: _,
provider,
}) = content
{
if let DataProvider::File(file) = provider {
if let DataType::Markdown(data) = file.data() {
let element = iced::widget::markdown::view(
data,
iced::widget::markdown::Settings::default(),
iced::widget::markdown::Style::from_palette(
iced::Theme::TokyoNightStorm.palette(),
),
);
Ok(element
.map(|url| SnowcapMessage::from(Message::Markdown(url)))
.into())
} else {
panic!("Expecting DataType::Markdown")
}
} else {
panic!("Expect DataProvider::File");
}
} else {
panic!("Expect MarkupType::Value::DataSource")
}
}
"image" => {
if let MarkupTree::Value(Value::DataSource {
name: _,
value: _,
provider,
}) = content
{
if let DataProvider::File(file) = provider {
if let DataType::Image(handle) = file.data() {
let image = Image::new(handle);
Ok(image.into())
} else {
panic!("Expecting DataType::Image")
}
} else {
panic!("Expecting DataProvider::File")
}
} else {
panic!("Expect MarkupType::Value::DataSource")
}
}
"themer" => {
// Create an iced::Theme from the name in the "theme" attribute
let theme: Theme = attrs
.get("theme")
.ok_or_else(|| Error::MissingAttribute("theme".to_string()))?
.try_into()?;
let content: Element<'a, SnowcapMessage, Theme> = content.try_into()?;
let themer = Themer::new(
move |old_theme| {
info!("Themer from {:?} to {:?}", old_theme, theme);
theme.clone()
},
content,
);
Ok(themer.into())
}
"svg" => {
if let MarkupTree::Value(Value::DataSource {
name: _,
value: _,
provider,
}) = content
{
if let DataProvider::File(file) = provider {
if let DataType::Svg(handle) = file.data() {
let svg = Svg::new(handle.clone());
Ok(svg.into())
} else {
panic!("Expecting DataType::Svg")
}
} else {
panic!("Expecting DataProvider::File")
}
} else {
panic!("Expect MarkupTree::Value::DataSource")
}
}
"pick-list" => match content {
MarkupTree::Value(value) => {
if let Value::Array(values) = value {
let values: Result<Vec<String>, ConversionError> =
values.iter().map(|v| v.try_into()).collect();
static CURRENT_SELECTION: Lazy<Mutex<Option<String>>> =
Lazy::new(move || Mutex::new(None));
let current = match &*CURRENT_SELECTION.lock().unwrap() {
Some(selection) => selection.clone(),
None => {
// Return the first item as the inital selection
values.as_ref().unwrap().first().unwrap().clone()
}
};
let picklist = PickList::new(values?, Some(current), |selected| {
// Store the selected item in the static
*CURRENT_SELECTION.lock().unwrap() = Some(selected.clone());
SnowcapMessage::from(Message::PickListSelected(selected.into()))
});
Ok(picklist.into())
} else {
panic!("Expecting Value::Array")
}
}
_ => panic!("Expecting MarkupTree::Value"),
},
_ => {
return Err(Error::Conversion(ConversionError::UnsupportedAttribute(
format!("Unhandled element type {name}"),
)))
}
}
}
}