Qt: Validate FindLineEdit regexp

Check if regexp is valid and set valid/invalid background color.

Change-Id: Ibf4d3fa84463afbd7c68631cfaddec8261807b8f
Reviewed-on: https://code.wireshark.org/review/13962
Petri-Dish: Stig Bjørlykke <stig@bjorlykke.org>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Stig Bjørlykke <stig@bjorlykke.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/ui/qt/find_line_edit.h b/ui/qt/find_line_edit.h
index 03996323ea..5b9c9f3fcd 100644
--- a/ui/qt/find_line_edit.h
+++ b/ui/qt/find_line_edit.h
@@ -40,11 +40,14 @@ signals:
     void useRegexFind(bool);
 
 private slots:
-    void contextMenuEvent(QContextMenuEvent *event);
     void setUseTextual();
     void setUseRegex();
 
 private:
+    void contextMenuEvent(QContextMenuEvent *event);
+    void keyPressEvent(QKeyEvent *event);
+    void validateText();
+
     bool use_regex_;
 };