ui: add envelope views in new tab action

ui/src/components/mail/view.rs

@@ -37,7 +37,7 @@ pub use self::envelope::*;
 
 use mime_apps::query_default_app;
 
-#[derive(PartialEq, Debug)]
+#[derive(PartialEq, Debug, Clone)]
 enum ViewMode {
     Normal,
     Url,
@@ -77,6 +77,18 @@ pub struct MailView {
     id: ComponentId,
 }
 
+impl Clone for MailView {
+    fn clone(&self) -> Self {
+        MailView {
+            subview: None,
+            cmd_buf: String::with_capacity(4),
+            pager: self.pager.clone(),
+            mode: self.mode.clone(),
+            ..*self
+        }
+    }
+}
+
 impl fmt::Display for MailView {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         // TODO display subject/info
@@ -974,6 +986,12 @@ impl Component for MailView {
                     }
                 }
             }
+            UIEvent::Action(Listing(OpenInNewTab)) => {
+                context
+                    .replies
+                    .push_back(UIEvent::Action(Tab(New(Some(Box::new(self.clone()))))));
+                return true;
+            }
             _ => {}
         }
         false
@@ -1035,7 +1053,15 @@ impl Component for MailView {
     fn id(&self) -> ComponentId {
         self.id
     }
+
     fn set_id(&mut self, id: ComponentId) {
         self.id = id;
     }
+
+    fn kill(&mut self, id: ComponentId, context: &mut Context) {
+        debug_assert!(self.id == id);
+        context
+            .replies
+            .push_back(UIEvent::Action(Tab(Kill(self.id))));
+    }
 }

ui/src/components/mail/view/thread.rs

@@ -44,7 +44,7 @@ struct ThreadEntry {
     heading: String,
 }
 
-#[derive(Debug, Default)]
+#[derive(Debug, Default, Clone)]
 pub struct ThreadView {
     new_cursor_pos: usize,
     cursor_pos: usize,
@@ -896,9 +896,24 @@ impl Component for ThreadView {
         }
     }
     fn process_event(&mut self, event: &mut UIEvent, context: &mut Context) -> bool {
+        match event {
+            UIEvent::Action(Listing(OpenInNewTab)) => {
+                /* Handle this before self.mailview does */
+                context
+                    .replies
+                    .push_back(UIEvent::Action(Tab(New(Some(Box::new(Self {
+                        initiated: false,
+                        ..self.clone()
+                    }))))));
+                return true;
+            }
+            _ => {}
+        }
+
         if self.show_mailview && self.mailview.process_event(event, context) {
             return true;
         }
+
         let shortcuts = &self.get_shortcuts(context)[ThreadView::DESCRIPTION];
         match *event {
             UIEvent::Input(Key::Char('R')) => {
@@ -1102,7 +1117,15 @@ impl Component for ThreadView {
     fn id(&self) -> ComponentId {
         self.id
     }
+
     fn set_id(&mut self, id: ComponentId) {
         self.id = id;
     }
+
+    fn kill(&mut self, id: ComponentId, context: &mut Context) {
+        debug_assert!(self.id == id);
+        context
+            .replies
+            .push_back(UIEvent::Action(Tab(Kill(self.id))));
+    }
 }

ui/src/components/utilities.rs

@@ -263,7 +263,7 @@ impl Component for VSplit {
     }
 }
 
-#[derive(Debug)]
+#[derive(Debug, Clone, Copy)]
 pub enum PageMovement {
     Home,
     PageUp,
@@ -274,7 +274,7 @@ pub enum PageMovement {
 /// A pager for text.
 /// `Pager` holds its own content in its own `CellBuffer` and when `draw` is called, it draws the
 /// current view of the text. It is responsible for scrolling etc.
-#[derive(Default, Debug)]
+#[derive(Default, Debug, Clone)]
 pub struct Pager {
     text: String,
     cursor_pos: usize,
@@ -1393,7 +1393,7 @@ impl Component for Tabbed {
 
 type EntryIdentifier = Vec<u8>;
 /// Shows selection to user
-#[derive(Debug, PartialEq)]
+#[derive(Debug, PartialEq, Clone)]
 pub struct Selector {
     single_only: bool,
     /// allow only one selection

ui/src/execute.rs

@@ -285,6 +285,17 @@ define_commands!([
                               )
                       );
                   )
+                },
+                { tags: ["open-in-tab"],
+                  desc: "opens envelope view in new tab",
+                  parser:(
+                      named!( open_in_new_tab<Action>,
+                              do_parse!(
+                                  ws!(tag!("open-in-tab"))
+                                  >> (Listing(OpenInNewTab))
+                              )
+                      );
+                  )
                 }
 ]);
 
@@ -334,7 +345,7 @@ named!(
 
 named!(
     listing_action<Action>,
-    alt_complete!(toggle | envelope_action | filter | toggle_thread_snooze)
+    alt_complete!(toggle | envelope_action | filter | toggle_thread_snooze | open_in_new_tab)
 );
 
 named!(

ui/src/execute/actions.rs

@@ -42,6 +42,7 @@ pub enum ListingAction {
     SetSeen,
     SetUnseen,
     Delete,
+    OpenInNewTab,
 }
 
 #[derive(Debug)]