Add scrollback hotkeys

This offers a few additional hotkeys that can be used in combination
with scrollback. None of these are used by default yet.

This implements the following bindings:
 - ScrollPageUp: Scroll exactly one screen height up
 - ScrollPageDown: Scroll exactly one screen height down
 - ScrollToTop: Scroll as far up as possible
 - ScrollToBottom: Scroll as far down as possible

This fixes #1151.

1 files changed, 12 insertions, 0 deletions

diff --git a/src/event.rs b/src/event.rs
index c079ddfb..322f0278 100644
--- a/src/event.rs
+++ b/src/event.rs
@@ -61,6 +61,18 @@ impl<'a, N: Notify + 'a> input::ActionContext for ActionContext<'a, N> {
         self.terminal.reset_scroll();
     }
 
+    fn scroll_to_top(&mut self) {
+        self.terminal.scroll_to_top();
+    }
+
+    fn scroll_page_up(&mut self) {
+        self.terminal.scroll_page_up();
+    }
+
+    fn scroll_page_down(&mut self) {
+        self.terminal.scroll_page_down();
+    }
+
     fn copy_selection(&self, buffer: ::copypasta::Buffer) {
         self.terminal
             .selection_to_string()