[gnome-shell] modalDialog: Fix auto-completion of prompts immediately upon display

[Stefan Walter <stefw src gnome org>]

commit 7b705dd6703973880472c741ad127c5684b1b036
Author: Stef Walter <stefw gnome org>
Date:   Wed Feb 13 21:57:02 2013 +0100

    modalDialog: Fix auto-completion of prompts immediately upon display
    
    Shell modal dialogs can take their action on a certain key's
    key-release-event. For example on <enter> the affirmative action is
    usually run.
    
    Make sure that the key was also pressed on the dialog and we're not
    seeing a spurious key-release-event from a key that was pressed before
    the dialog was displayed.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=692937

 js/ui/modalDialog.js |   13 ++++++++++++-
 1 files changed, 12 insertions(+), 1 deletions(-)
---
diff --git a/js/ui/modalDialog.js b/js/ui/modalDialog.js
index 5c20b08..304733e 100644
--- a/js/ui/modalDialog.js
+++ b/js/ui/modalDialog.js
@@ -58,7 +58,9 @@ const ModalDialog = new Lang.Class({
 
         this._group.connect('destroy', Lang.bind(this, this._onGroupDestroy));
 
+        this._pressedKey = null;
         this._buttonKeys = {};
+        this._group.connect('key-press-event', Lang.bind(this, this._onKeyPressEvent));
         this._group.connect('key-release-event', Lang.bind(this, this._onKeyReleaseEvent));
 
         this._backgroundBin = new St.Bin();
@@ -179,10 +181,19 @@ const ModalDialog = new Lang.Class({
         return button;
     },
 
+    _onKeyPressEvent: function(object, event) {
+        this._pressedKey = event.get_key_symbol();
+    },
+
     _onKeyReleaseEvent: function(object, event) {
+        let pressedKey = this._pressedKey;
+        this._pressedKey = null;
+
         let symbol = event.get_key_symbol();
-        let buttonInfo = this._buttonKeys[symbol];
+        if (symbol != pressedKey)
+            return false;
 
+        let buttonInfo = this._buttonKeys[symbol];
         if (!buttonInfo)
             return false;