From 430929e75a4e6c81d7dd2746570f925bb45e674e Mon Sep 17 00:00:00 2001
From: ShadowNinja <shadowninja@minetest.net>
Date: Sat, 27 Feb 2016 16:04:44 -0500
Subject: Add text selection and copying to console

---
 src/chat.cpp | 64 +++++++++++++++++++++++++++++++-----------------------------
 1 file changed, 33 insertions(+), 31 deletions(-)

(limited to 'src/chat.cpp')

diff --git a/src/chat.cpp b/src/chat.cpp
index d8cf3efd9..809d4e422 100644
--- a/src/chat.cpp
+++ b/src/chat.cpp
@@ -390,6 +390,7 @@ ChatPrompt::ChatPrompt(std::wstring prompt, u32 history_limit):
 	m_cols(0),
 	m_view(0),
 	m_cursor(0),
+	m_cursor_len(0),
 	m_nick_completion_start(0),
 	m_nick_completion_end(0)
 {
@@ -426,11 +427,6 @@ void ChatPrompt::addToHistory(std::wstring line)
 	m_history_index = m_history.size();
 }
 
-std::wstring ChatPrompt::getLine()
-{
-	return m_line;
-}
-
 void ChatPrompt::clear()
 {
 	m_line.clear();
@@ -590,14 +586,12 @@ void ChatPrompt::cursorOperation(CursorOp op, CursorOpDir dir, CursorOpScope sco
 	s32 length = m_line.size();
 	s32 increment = (dir == CURSOROP_DIR_RIGHT) ? 1 : -1;
 
-	if (scope == CURSOROP_SCOPE_CHARACTER)
-	{
+	switch (scope) {
+	case CURSOROP_SCOPE_CHARACTER:
 		new_cursor += increment;
-	}
-	else if (scope == CURSOROP_SCOPE_WORD)
-	{
-		if (increment > 0)
-		{
+		break;
+	case CURSOROP_SCOPE_WORD:
+		if (dir == CURSOROP_DIR_RIGHT) {
 			// skip one word to the right
 			while (new_cursor < length && isspace(m_line[new_cursor]))
 				new_cursor++;
@@ -605,39 +599,47 @@ void ChatPrompt::cursorOperation(CursorOp op, CursorOpDir dir, CursorOpScope sco
 				new_cursor++;
 			while (new_cursor < length && isspace(m_line[new_cursor]))
 				new_cursor++;
-		}
-		else
-		{
+		} else {
 			// skip one word to the left
 			while (new_cursor >= 1 && isspace(m_line[new_cursor - 1]))
 				new_cursor--;
 			while (new_cursor >= 1 && !isspace(m_line[new_cursor - 1]))
 				new_cursor--;
 		}
-	}
-	else if (scope == CURSOROP_SCOPE_LINE)
-	{
+		break;
+	case CURSOROP_SCOPE_LINE:
 		new_cursor += increment * length;
+		break;
+	case CURSOROP_SCOPE_SELECTION:
+		break;
 	}
 
 	new_cursor = MYMAX(MYMIN(new_cursor, length), 0);
 
-	if (op == CURSOROP_MOVE)
-	{
+	switch (op) {
+	case CURSOROP_MOVE:
 		m_cursor = new_cursor;
-	}
-	else if (op == CURSOROP_DELETE)
-	{
-		if (new_cursor < old_cursor)
-		{
-			m_line.erase(new_cursor, old_cursor - new_cursor);
-			m_cursor = new_cursor;
+		m_cursor_len = 0;
+		break;
+	case CURSOROP_DELETE:
+		if (m_cursor_len > 0) { // Delete selected text first
+			m_line.erase(m_cursor, m_cursor_len);
+		} else {
+			m_cursor = MYMIN(new_cursor, old_cursor);
+			m_line.erase(m_cursor, abs(new_cursor - old_cursor));
 		}
-		else if (new_cursor > old_cursor)
-		{
-			m_line.erase(old_cursor, new_cursor - old_cursor);
-			m_cursor = old_cursor;
+		m_cursor_len = 0;
+		break;
+	case CURSOROP_SELECT:
+		if (scope == CURSOROP_SCOPE_LINE) {
+			m_cursor = 0;
+			m_cursor_len = length;
+		} else {
+			m_cursor = MYMIN(new_cursor, old_cursor);
+			m_cursor_len += abs(new_cursor - old_cursor);
+			m_cursor_len = MYMIN(m_cursor_len, length - m_cursor);
 		}
+		break;
 	}
 
 	clampView();
-- 
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