TextEditor: Add modified handling

Add a modified property to the document and add
handling in onClosing(). Connect the actions to
call close() instead of Qt.quit() for it to
become active.

Change-Id: I0fec75629db64e91508ed8ba45d4fb60be146b1b
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>

1 files changed, 15 insertions, 0 deletions

diff --git a/examples/quickcontrols2/texteditor/documenthandler.cpp b/examples/quickcontrols2/texteditor/documenthandler.cpp
index 25a83592..5def1b61 100644
--- a/examples/quickcontrols2/texteditor/documenthandler.cpp
+++ b/examples/quickcontrols2/texteditor/documenthandler.cpp
@@ -80,7 +80,11 @@ void DocumentHandler::setDocument(QQuickTextDocument *document)
     if (document == m_document)
         return;
 
+    if (m_document)
+        m_document->textDocument()->disconnect(this);
     m_document = document;
+    if (m_document)
+        connect(m_document->textDocument(), &QTextDocument::modificationChanged, this, &DocumentHandler::modifiedChanged);
     emit documentChanged();
 }
 
@@ -370,3 +374,14 @@ void DocumentHandler::mergeFormatOnWordOrSelection(const QTextCharFormat &format
         cursor.select(QTextCursor::WordUnderCursor);
     cursor.mergeCharFormat(format);
 }
+
+bool DocumentHandler::modified() const
+{
+    return m_document && m_document->textDocument()->isModified();
+}
+
+void DocumentHandler::setModified(bool m)
+{
+    if (m_document)
+        m_document->textDocument()->setModified(m);
+}