Lua: Refactor Clipboard access

Clipboard is now accessed via "qt.clipboard()" to stay in line
with other code that returns a global singleton.

Also fixed documentation.

Change-Id: I4298f036ef6558e48f36d156d6482fc0bde5d898
Reviewed-by: Artur Twardy <atw@spyro-soft.com>
Reviewed-by: hjk <hjk@qt.io>

src/plugins/lua/bindings/qt.cpp

@@ -29,29 +29,27 @@ void setupQtModule()
             "currentCompletion",
             &QCompleter::currentCompletion,
             "completionMode",
-            sol::property(&QCompleter::completionMode,
-                          [](QCompleter *c, QCompleter::CompletionMode mode) {
-                              c->setCompletionMode(mode);
-                          }),
+            sol::property(
+                &QCompleter::completionMode,
+                [](QCompleter *c, QCompleter::CompletionMode mode) { c->setCompletionMode(mode); }),
             "onActivated",
             sol::property([guard = pluginSpec](QCompleter &obj, sol::function callback) {
-                QObject::connect(&obj,
-                                 QOverload<const QString &>::of(&QCompleter::activated),
-                                 guard->connectionGuard.get(),
-                                 [callback](const QString &arg) {
-                                     void_safe_call(callback, arg);
-                                 });})
-            );
+                QObject::connect(
+                    &obj,
+                    QOverload<const QString &>::of(&QCompleter::activated),
+                    guard->connectionGuard.get(),
+                    [callback](const QString &arg) { void_safe_call(callback, arg); });
+            }));
 
         qt.new_usertype<QClipboard>(
             "QClipboard",
-            sol::call_constructor,
-            &QApplication::clipboard,
+            sol::no_constructor,
             "text",
-            sol::property([](QClipboard &self) { return self.text(); },
-                          [](QClipboard &self, const QString &value) { self.setText(value); })
-            );
+            sol::property(
+                [](QClipboard &self) { return self.text(); },
+                [](QClipboard &self, const QString &value) { self.setText(value); }));
 
+        qt["clipboard"] = &QApplication::clipboard;
 
         mirrorEnum(qt, QMetaEnum::fromType<QCompleter::CompletionMode>(), "QCompleterCompletionMode");
 

src/plugins/lua/meta/qt.lua

@@ -11,27 +11,28 @@ qt.CompleterCompletionMode = {
     UnfilteredPopupCompletion = 2,
 };
 
----Creates QCompleter.
 ---@class QCompleter
 ---@field completionMode CompleterCompletionMode The completion mode.
 local QCompleter = {}
 
+---Creates a new Completer.
+---@param params string[] The list of suggestions.
+---@return QCompleter completer The new Completer.
+function qt.QCompleter.create(params) end
+
 ---Returns current completion.
 ---@return string
 function qt.QCompleter:currentCompletion() end
+---@param callback function The function to be called when user choice is selected from popup.
+function qt.QCompleter.onActivated(callback) end
 
----@param params string list A list of suggestions.
----@return QCompleter Created Completer.
-function qt.QCompleter.create(params) end
+---@class QClipboard A Lua wrapper for the Qt `QClipboard` class.
+---@field text string The text content of the clipboard. Gets or sets the text content of the clipboard.
+qt.QClipboard = {}
 
----@param function The function to be called when user choice is selected from popup.
-function qt.QCompleter.onActivated(function) end
-
----@class QClipboard
---- A Lua wrapper for the Qt `QClipboard` class.
-
-qt.QClipboard() Creates QClipboard object, which is a singleton instance of the system clipboard.
----@field text The text content of the clipboard. Gets or sets the text content of the clipboard.
+---Returns the global clipboard object.
+---@return QClipboard globalClipboard The global clipboard object.
+function qt.clipboard() end
 
 ---@enum TextElideMode
 qt.TextElideMode = {