Lua: Add TextCursor:selectedText binding

Change-Id: I7613b5c6d03dcdd94ec553bcf17f532fe6b650c7
Reviewed-by: David Schulz <david.schulz@qt.io>

src/plugins/lua/bindings/texteditor.cpp

@@ -176,7 +176,11 @@ void setupTextEditorModule()
             "columnNumber",
             &QTextCursor::columnNumber,
             "hasSelection",
-            &QTextCursor::hasSelection);
+            &QTextCursor::hasSelection,
+            "selectedText",
+            [](QTextCursor *cursor) {
+                return cursor->selectedText().replace(QChar::ParagraphSeparator, '\n');
+            });
 
         result.new_usertype<TextEditor::BaseTextEditor>(
             "TextEditor",

src/plugins/lua/meta/texteditor.lua

@@ -6,6 +6,9 @@ local textEditor = {}
 ---@field blockNumber integer The block (line) number of the cursor.
 ---@field columnNumber integer The column number of the cursor.
 local TextCursor = {}
+---Returns the selected text of the cursor.
+---@return string selectedText The selected text of the cursor.
+function TextCursor:selectedText() end
 
 ---@class MultiTextCursor
 ---@field mainCursor TextCursor The main cursor.