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use super::{async_view, help_view::HasHelpView, link_dialog, traits::*, utils};
use crate::prelude::*;
/// ArticleView is a View used to display the content of a web page in reader mode
pub struct ArticleView {
article: Article,
links: Vec<String>,
width: usize,
view: ScrollView<LinearLayout>,
raw_command: String,
}
impl ViewWrapper for ArticleView {
wrap_impl!(self.view: ScrollView<LinearLayout>);
fn wrap_layout(&mut self, size: Vec2) {
if self.width != size.x {
// got a new width since the last time the article view is rendered,
// re-parse the article using the new width
self.width = size.x;
match self.article.parse(self.width.saturating_sub(5)) {
Ok(result) => {
self.set_article_content(result.s);
self.links = result.links;
}
Err(err) => {
warn!("failed to parse the article: {}", err);
}
}
}
self.with_view_mut(|v| v.layout(size));
}
fn wrap_take_focus(&mut self, _: Direction) -> Result<EventResult, CannotFocus> {
Ok(EventResult::Consumed(None))
}
}
impl ArticleView {
pub fn new(article: Article) -> Self {
let component_style = &config::get_config_theme().component_style;
let unknown = "[unknown]".to_string();
let desc = format!(
"by: {}, date_published: {}",
article.author.as_ref().unwrap_or(&unknown),
article.date_published.as_ref().unwrap_or(&unknown),
);
let view = LinearLayout::vertical()
.child(TextView::new(&article.title).center().full_width())
.child(
TextView::new(StyledString::styled(desc, component_style.metadata))
.center()
.full_width(),
)
.child(PaddedView::lrtb(1, 1, 1, 1, TextView::new("")))
.scrollable();
ArticleView {
article,
links: vec![],
width: 0,
view,
raw_command: "".to_string(),
}
}
/// Update the content of the article
pub fn set_article_content(&mut self, new_content: StyledString) {
self.view
.get_inner_mut()
.get_child_mut(2)
.expect("The article view should have 3 children")
.downcast_mut::<PaddedView<TextView>>()
.expect("The 3rd child of the article view should be a padded text view")
.get_inner_mut()
.set_content(new_content)
}
inner_getters!(self.view: ScrollView<LinearLayout>);
}
impl ScrollViewContainer for ArticleView {
type ScrollInner = LinearLayout;
fn get_inner_scroll_view(&self) -> &ScrollView<LinearLayout> {
self.get_inner()
}
fn get_inner_scroll_view_mut(&mut self) -> &mut ScrollView<LinearLayout> {
self.get_inner_mut()
}
}
fn construct_article_main_view(
client: &'static client::HNClient,
article: Article,
) -> OnEventView<ArticleView> {
let is_suffix_key = |c: &Event| -> bool {
let article_view_keymap = config::get_article_view_keymap();
article_view_keymap.open_link_in_browser.has_event(c)
|| article_view_keymap.open_link_in_article_view.has_event(c)
};
let article_view_keymap = config::get_article_view_keymap().clone();
OnEventView::new(ArticleView::new(article))
.on_pre_event_inner(EventTrigger::from_fn(|_| true), move |s, e| {
match *e {
Event::Char(c) if c.is_ascii_digit() => {
s.raw_command.push(c);
}
_ => {
if !is_suffix_key(e) {
s.raw_command.clear();
}
}
};
None
})
.on_pre_event_inner(article_view_keymap.open_link_dialog, move |s, _| {
Some(EventResult::with_cb({
let links = s.links.clone();
move |s| {
s.add_layer(link_dialog::get_link_dialog(client, &links));
}
}))
})
.on_pre_event_inner(article_view_keymap.open_link_in_browser, |s, _| {
match s.raw_command.parse::<usize>() {
Ok(num) => {
s.raw_command.clear();
utils::open_ith_link_in_browser(&s.links, num)
}
Err(_) => None,
}
})
.on_pre_event_inner(
article_view_keymap.open_link_in_article_view,
move |s, _| match s.raw_command.parse::<usize>() {
Ok(num) => {
s.raw_command.clear();
utils::open_ith_link_in_article_view(client, &s.links, num)
}
Err(_) => None,
},
)
.on_pre_event_inner(article_view_keymap.open_article_in_browser, |s, _| {
utils::open_url_in_browser(&s.article.url);
Some(EventResult::Consumed(None))
})
.on_pre_event(config::get_global_keymap().open_help_dialog.clone(), |s| {
s.add_layer(ArticleView::construct_on_event_help_view())
})
.on_scroll_events()
}
/// Construct an article view of an article
pub fn construct_article_view(client: &'static client::HNClient, article: Article) -> impl View {
let desc = format!("Article View - {}", article.title);
let main_view = construct_article_main_view(client, article).full_height();
let mut view = LinearLayout::vertical()
.child(utils::construct_view_title_bar(&desc))
.child(main_view)
.child(utils::construct_footer_view::<ArticleView>());
view.set_focus_index(1)
.unwrap_or(EventResult::Consumed(None));
view
}
/// Retrieve an article from a given `url` and construct an article view of that article
pub fn construct_and_add_new_article_view(
client: &'static client::HNClient,
s: &mut Cursive,
url: &str,
) {
let async_view = async_view::construct_article_view_async(client, s, url);
s.screen_mut().add_transparent_layer(Layer::new(async_view))
}
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