From 9a9b852bc51e09312c985e66fe13ed36826e086b Mon Sep 17 00:00:00 2001
From: FliegendeWurst <2012gdwu+github@posteo.de>
Date: Tue, 20 Apr 2021 21:32:13 +0200
Subject: [PATCH] browse: shortcut to view mail fullscreen

---
 src/bin/browse.rs | 30 +++++++++++++++++++++++++++---
 1 file changed, 27 insertions(+), 3 deletions(-)

diff --git a/src/bin/browse.rs b/src/bin/browse.rs
index 2f9cdb8..e67d9d8 100644
--- a/src/bin/browse.rs
+++ b/src/bin/browse.rs
@@ -1,8 +1,8 @@
 #![feature(internal_output_capture)]
 
-use std::{cell::RefCell, cmp, collections::{HashMap, HashSet}, env, fmt::Display, io, sync::Arc};
+use std::{cell::RefCell, cmp, collections::{HashMap, HashSet}, env, fmt::Display, io, sync::{Arc, atomic::{AtomicBool, Ordering}}};
 
-use cursive::{Cursive, Vec2};
+use cursive::{Cursive, Vec2, view::ViewWrapper};
 use cursive::align::HAlign;
 use cursive::event::{Event, Key};
 use cursive::traits::Identifiable;
@@ -286,7 +286,31 @@ fn show_listing(mailbox: &str) -> Result<()> {
 		});
 	let tree_resized = ResizedView::new(SizeConstraint::AtMost(120), SizeConstraint::Free, tree);
 	let mail_info = MailInfoView::new().with_name("mail_info");
-	let mail_content = TextView::new("").with_name("mail").scrollable().with_name("mail_scroller");
+	let mail_content = TextView::new("").with_name("mail");
+	static MAIL_FULLSCREEN: AtomicBool = AtomicBool::new(false);
+	let dummy = std::rc::Rc::new(RefCell::new(Some(OnEventView::new(TextView::new("dummy").with_name("dummy"))))); // TODO dummy content
+	let dummy_ = dummy.clone();
+	let mail_content = OnEventView::new(mail_content)
+		.on_event('f', move |s| {
+			let dummy__ = dummy_.clone();
+			if MAIL_FULLSCREEN.load(Ordering::SeqCst) {
+				let layer = s.pop_layer().unwrap();
+				if let Ok(textview) = layer.downcast::<ResizedView<OnEventView<NamedView<TextView>>>>() {
+					dummy__.borrow_mut().replace(textview.into_inner().unwrap_or_else(|_| panic!("?")));
+					s.call_on_name("mail_event_host", move |this: &mut OnEventView<NamedView<TextView>>| {
+						std::mem::swap(dummy__.borrow_mut().as_mut().unwrap(), this);
+					});
+				}
+				MAIL_FULLSCREEN.store(false, Ordering::SeqCst);
+			} else {
+				s.call_on_name("mail_event_host", move |this: &mut OnEventView<NamedView<TextView>>| {
+					std::mem::swap(dummy__.borrow_mut().as_mut().unwrap(), this);
+				});
+				s.add_fullscreen_layer(ResizedView::with_full_screen(dummy_.borrow_mut().take().unwrap()));
+				MAIL_FULLSCREEN.store(true, Ordering::SeqCst);
+			}
+		}).with_name("mail_event_host");
+	let mail_content = mail_content.scrollable().with_name("mail_scroller");
 	let mut mail_part_select = TreeView::<MailPart>::new();
 	mail_part_select.set_on_select(|siv, row| {
 		let mail = siv.call_on_name("part_select", |tree: &mut TreeView<MailPart>| {