Rerender certain views when their width changes

Situations where a view's width changes:
- changing screen modes
- enter staging or patch building
- resizing the terminal window

For the first of these we currently have special code to force a rerender, since
some views render different content depending on whether they are in full-screen
mode. We'll be able to remove that code now, since this new generic mechanism
takes care of that too.

But we will need this more general mechanism for cases where views truncate
their content to the view width; we'll add one example for that later in this
branch.

1 files changed, 3 insertions, 0 deletions

diff --git a/pkg/gui/types/context.go b/pkg/gui/types/context.go
index c47945aee..aca694228 100644
--- a/pkg/gui/types/context.go
+++ b/pkg/gui/types/context.go
@@ -60,6 +60,9 @@ type IBaseContext interface {
 	// determined independently.
 	HasControlledBounds() bool
 
+	// true if the view needs to be rerendered when its width changes
+	NeedsRerenderOnWidthChange() bool
+
 	// returns the desired title for the view upon activation. If there is no desired title (returns empty string), then
 	// no title will be set
 	Title() string