[gnome-shell] screenshot-ui: Add mode argument to open()

[Marge Bot <marge-bot src gnome org>]

commit b757f165a315b7efa10834acef92d0d1f9cb33b1
Author: Ivan Molodetskikh <yalterz gmail com>
Date:   Thu Feb 3 22:47:07 2022 +0300

    screenshot-ui: Add mode argument to open()
    
    In a subsequent commit we will add a function to open the screenshot UI
    in the screencast mode. This argument will allow us to do that without
    resorting to accessing private fields from the outside.
    
    Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2107>

 js/ui/screenshot.js | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)
---
diff --git a/js/ui/screenshot.js b/js/ui/screenshot.js
index 3740975b1d..eb9d21a5df 100644
--- a/js/ui/screenshot.js
+++ b/js/ui/screenshot.js
@@ -988,6 +988,11 @@ class UIWindowSelector extends St.Widget {
     }
 });
 
+const UIMode = {
+    SCREENSHOT: 0,
+    SCREENCAST: 1,
+};
+
 var ScreenshotUI = GObject.registerClass({
     Properties: {
         'screencast-in-progress': GObject.ParamSpec.boolean(
@@ -1408,13 +1413,15 @@ var ScreenshotUI = GObject.registerClass({
             this._screenSelectors[Main.layoutManager.primaryIndex].checked = true;
     }
 
-    async open() {
+    async open(mode = UIMode.SCREENSHOT) {
         if (this._openingCoroutineInProgress)
             return;
 
         if (this._screencastInProgress)
             return;
 
+        this._castButton.checked = mode === UIMode.SCREENCAST;
+
         if (!this.visible) {
             // Screenshot UI is opening from completely closed state
             // (rather than opening back from in process of closing).