From 474578fd04355c3247e8f9f6383d17e37c2c3015 Mon Sep 17 00:00:00 2001
From: Mikko Rasa <tdb@tdb.fi>
Date: Mon, 16 Sep 2019 19:40:24 +0300
Subject: [PATCH] Add a signal for Entry widget text changes

---
 source/entry.cpp | 18 ++++++++++++++----
 source/entry.h   |  3 ++-
 2 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/source/entry.cpp b/source/entry.cpp
index 54c5fb7..751f173 100644
--- a/source/entry.cpp
+++ b/source/entry.cpp
@@ -62,6 +62,9 @@ void Entry::set_text(const string &t)
 
 void Entry::insert(unsigned pos, const string &t)
 {
+	if(t.empty())
+		return;
+
 	text.insert(pos, t);
 
 	unsigned old_edit_pos = edit_pos;
@@ -70,6 +73,7 @@ void Entry::insert(unsigned pos, const string &t)
 	if(selection_active && selection_pos>=pos)
 		selection_pos += t.size();
 
+	signal_text_changed.emit(text.get());
 	if(edit_pos!=old_edit_pos)
 		signal_edit_position_changed.emit(edit_pos);
 
@@ -81,6 +85,9 @@ void Entry::insert(unsigned pos, const string &t)
 
 void Entry::erase(unsigned pos, unsigned len)
 {
+	if(!len)
+		return;
+
 	text.erase(pos, len);
 
 	unsigned old_edit_pos = edit_pos;
@@ -96,6 +103,7 @@ void Entry::erase(unsigned pos, unsigned len)
 			selection_pos = pos;
 	}
 
+	signal_text_changed.emit(text.get());
 	if(edit_pos!=old_edit_pos)
 		signal_edit_position_changed.emit(edit_pos);
 
@@ -255,14 +263,14 @@ bool Entry::key_press(unsigned key, unsigned mod)
 	if(key==Input::KEY_BACKSPACE)
 	{
 		if(selection_active)
-			erase_selection();
+			erase_selection(true);
 		else if(edit_pos>0)
 			erase(edit_pos-1, 1);
 	}
 	else if(key==Input::KEY_DELETE)
 	{
 		if(selection_active)
-			erase_selection();
+			erase_selection(true);
 		else
 			erase(edit_pos, 1);
 	}
@@ -299,7 +307,7 @@ bool Entry::character(wchar_t ch)
 	if(got_key_press && ch>=' ' && ch!=0x7F)
 	{
 		if(selection_active)
-			erase_selection();
+			erase_selection(false);
 		insert(edit_pos, StringCodec::encode<StringCodec::Utf8>(StringCodec::ustring(1, ch)));
 		return true;
 	}
@@ -406,13 +414,15 @@ void Entry::set_edit_position(unsigned ep, bool select)
 	rebuild();
 }
 
-void Entry::erase_selection()
+void Entry::erase_selection(bool emit_change)
 {
 	unsigned start, end;
 	if(!get_selection(start, end))
 		return;
 
 	text.erase(start, end-start);
+	if(emit_change)
+		signal_text_changed.emit(text.get());
 	set_edit_position(start, false);
 }
 
diff --git a/source/entry.h b/source/entry.h
index 02d1f2e..58e45fb 100644
--- a/source/entry.h
+++ b/source/entry.h
@@ -33,6 +33,7 @@ public:
 
 	sigc::signal<void, unsigned> signal_edit_position_changed;
 	sigc::signal<void, unsigned> signal_scroll_position_changed;
+	sigc::signal<void, const std::string &> signal_text_changed;
 
 	// Deprecated
 	sigc::signal<void> signal_enter;
@@ -99,7 +100,7 @@ private:
 
 	void move_edit_position(Navigation, bool);
 	void set_edit_position(unsigned, bool);
-	void erase_selection();
+	void erase_selection(bool);
 	void check_cursor_blink();
 	void check_view_range();
 	void slider_value_changed(double);
-- 
2.45.2