From 82d43fa1ee6818d556c52f956f962b660b6032af Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Tue, 15 Nov 2022 03:24:19 +0100
Subject: [PATCH] Allow empty text in prompter

---
 libs/widgets/prompter.cc        | 16 ++++++++++++++--
 libs/widgets/widgets/prompter.h |  2 ++
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/libs/widgets/prompter.cc b/libs/widgets/prompter.cc
index 9f2df26b5e..a178cfc511 100644
--- a/libs/widgets/prompter.cc
+++ b/libs/widgets/prompter.cc
@@ -77,6 +77,18 @@ Prompter::init (bool with_cancel)
 	show_all_children();
 }
 
+void
+Prompter::set_allow_empty (bool yn)
+{
+	if (yn == allow_empty) {
+		return;
+	}
+	allow_empty = yn;
+	if (allow_empty) {
+		can_accept_from_entry = true;
+	}
+}
+
 void
 Prompter::on_show ()
 {
@@ -87,7 +99,7 @@ Prompter::on_show ()
 	if (first_show) {
 		entry.signal_changed().connect (mem_fun (*this, &Prompter::on_entry_changed));
 		entry.signal_activate().connect (mem_fun (*this, &Prompter::entry_activated));
-		can_accept_from_entry = !entry.get_text().empty();
+		can_accept_from_entry = !entry.get_text().empty() || allow_empty;
 		first_show = false;
 	}
 
@@ -130,7 +142,7 @@ Prompter::on_entry_changed ()
 	   button, nothing will happen at all.
 	*/
 
-	if (!entry.get_text().empty()) {
+	if (!entry.get_text().empty() || allow_empty) {
 		set_response_sensitive (Gtk::RESPONSE_ACCEPT, true);
 		set_default_response (Gtk::RESPONSE_ACCEPT);
 		can_accept_from_entry = true;
diff --git a/libs/widgets/widgets/prompter.h b/libs/widgets/widgets/prompter.h
index 8ed7aa36f5..7237007bac 100644
--- a/libs/widgets/widgets/prompter.h
+++ b/libs/widgets/widgets/prompter.h
@@ -57,6 +57,7 @@ public:
 	void change_labels (std::string ok, std::string cancel);
 
 	void get_result (std::string &str, bool strip=true);
+	void set_allow_empty (bool yn = true);
 
 protected:
 	Gtk::Entry& the_entry() { return entry; }
@@ -70,6 +71,7 @@ private:
 	Gtk::Label entryLabel;
 	bool first_show;
 	bool can_accept_from_entry;
+	bool allow_empty;
 
 	void init (bool with_cancel);
 	void entry_activated ();