Introduce hook for text cursor changes in QTextEdit and QPlainTextEdit

Currently it is hard for Q{Plain}TextEdit subclasses to keep track
of changes of the text cursor by direct calls to setTextCursor from
arbitrary code. By redirecting the setTextCursor to a virtual
function subclasses get the chance to intercept such calls.

Change-Id: Id92d9c86928b97285b0f5b7b39790442dfac3e50
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/src/widgets/widgets/qtextedit.cpp b/src/widgets/widgets/qtextedit.cpp
index 0ab76db5d3..0b31c536ac 100644
--- a/src/widgets/widgets/qtextedit.cpp
+++ b/src/widgets/widgets/qtextedit.cpp
@@ -757,6 +757,17 @@ QTextDocument *QTextEdit::document() const
 */
 void QTextEdit::setTextCursor(const QTextCursor &cursor)
 {
+    doSetTextCursor(cursor);
+}
+
+/*!
+    \internal
+
+     This provides a hook for subclasses to intercept cursor changes.
+*/
+
+void QTextEdit::doSetTextCursor(const QTextCursor &cursor)
+{
     Q_D(QTextEdit);
     d->control->setTextCursor(cursor);
 }