From e9919c5e4ccf5b8a174b1b918a6a9c5173329549 Mon Sep 17 00:00:00 2001
From: Ali Kianian <ali.kianian@qt.io>
Date: Thu, 3 Apr 2025 14:59:25 +0300
Subject: [PATCH] QmlDesigner: Update paste action on clipboard changes

Fixes: QDS-10999
Change-Id: I03e477be64036ffbd3baf2c2286406f3ef2ae2b7
Reviewed-by: David Schulz <david.schulz@qt.io>
---
 src/plugins/texteditor/texteditor.cpp | 24 ++++++++++++++++++------
 1 file changed, 18 insertions(+), 6 deletions(-)

diff --git a/src/plugins/texteditor/texteditor.cpp b/src/plugins/texteditor/texteditor.cpp
index 2560315ad70..8bd65c7018f 100644
--- a/src/plugins/texteditor/texteditor.cpp
+++ b/src/plugins/texteditor/texteditor.cpp
@@ -877,6 +877,7 @@ public:
     void updateRedoAction();
     void updateUndoAction();
     void updateCopyAction(bool on);
+    void updatePasteAction();
 
 public:
     TextEditorWidget *q;
@@ -1074,6 +1075,7 @@ public:
     QAction *m_copyAction = nullptr;
     QAction *m_copyHtmlAction = nullptr;
     QAction *m_cutAction = nullptr;
+    QAction *m_pasteAction = nullptr;
     QAction *m_autoIndentAction = nullptr;
     QAction *m_autoFormatAction = nullptr;
     QAction *m_visualizeWhitespaceAction = nullptr;
@@ -1272,6 +1274,8 @@ TextEditorWidgetPrivate::TextEditorWidgetPrivate(TextEditorWidget *parent)
     connect(q, &QPlainTextEdit::copyAvailable,
             this, &TextEditorWidgetPrivate::updateCopyAction);
 
+    connect(qApp->clipboard(), &QClipboard::changed, this, &TextEditorWidgetPrivate::updatePasteAction);
+
     m_parenthesesMatchingTimer.setSingleShot(true);
     m_parenthesesMatchingTimer.setInterval(50);
     connect(&m_parenthesesMatchingTimer, &QTimer::timeout,
@@ -4257,11 +4261,13 @@ void TextEditorWidgetPrivate::registerActions()
                       .addOnTriggered([this] { q->cut(); })
                       .setScriptable(true)
                       .contextAction();
-    m_modifyingActions << ActionBuilder(this, PASTE)
-                              .setContext(m_editorContext)
-                              .addOnTriggered([this] { q->paste(); })
-                              .setScriptable(true)
-                              .contextAction();
+    m_pasteAction = ActionBuilder(this, PASTE)
+                                  .setContext(m_editorContext)
+                                  .addOnTriggered([this] { q->paste(); })
+                                  .setScriptable(true)
+                                  .contextAction();
+    m_modifyingActions << m_pasteAction;
+
     ActionBuilder(this, SELECTALL)
         .setContext(m_editorContext)
         .setScriptable(true)
@@ -4710,7 +4716,7 @@ void TextEditorWidgetPrivate::updateActions()
     updateRedoAction();
     updateUndoAction();
     updateCopyAction(q->textCursor().hasSelection());
-
+    updatePasteAction();
     updateOptionalActions();
 }
 
@@ -4755,6 +4761,12 @@ void TextEditorWidgetPrivate::updateCopyAction(bool hasCopyableText)
         m_copyHtmlAction->setEnabled(hasCopyableText);
 }
 
+void TextEditorWidgetPrivate::updatePasteAction()
+{
+    if (m_pasteAction)
+        m_pasteAction->setEnabled(!q->isReadOnly() && !qApp->clipboard()->text(QClipboard::Mode::Clipboard).isEmpty());
+}
+
 bool TextEditorWidget::codeFoldingVisible() const
 {
     return d->m_codeFoldingVisible;