Terminal: Support Ctrl+C/V on Windows

When a selection is present, let Ctrl+C work as copy
on Windows.

Remove sending ESC key in clearSelection as it interfered
with a Paste after copy.

Change-Id: I92db7f263e1eb433bca8aa5500fcecb637a23f90
Reviewed-by: Cristian Adam <cristian.adam@qt.io>

src/plugins/terminal/shortcutmap.cpp

@@ -9,6 +9,7 @@
 
 #include <algorithm>
 
+#include <QAction>
 #include <QGuiApplication>
 #include <QKeyEvent>
 #include <QLoggingCategory>
@@ -216,8 +217,6 @@ QKeySequence::SequenceMatch ShortcutMap::state()
 */
 bool ShortcutMap::tryShortcut(QKeyEvent *e)
 {
-    Q_D(ShortcutMap);
-
     if (e->key() == Qt::Key_unknown)
         return false;
 
@@ -234,14 +233,8 @@ bool ShortcutMap::tryShortcut(QKeyEvent *e)
         // but we need to say we did, so that we get the follow-up key-presses.
         return true;
     case QKeySequence::ExactMatch: {
-        // Save number of identical matches before dispatching
-        // to keep ShortcutMap and tryShortcut reentrant.
-        const int identicalMatches = d->identicals.size();
         resetState();
-        dispatchEvent(e);
-        // If there are no identicals we've only found disabled shortcuts, and
-        // shouldn't say that we handled the event.
-        return identicalMatches > 0;
+        return dispatchEvent(e);
     }
     }
 #if QT_VERSION >= QT_VERSION_CHECK(6, 5, 0)
@@ -510,11 +503,11 @@ QList<const ShortcutEntry *> ShortcutMap::matches() const
 /*! \internal
     Dispatches QShortcutEvents to widgets who grabbed the matched key sequence.
 */
-void ShortcutMap::dispatchEvent(QKeyEvent *e)
+bool ShortcutMap::dispatchEvent(QKeyEvent *e)
 {
     Q_D(ShortcutMap);
     if (!d->identicals.size())
-        return;
+        return false;
 
     const QKeySequence &curKey = d->identicals.at(0)->keyseq;
     if (d->prevSequence != curKey) {
@@ -541,7 +534,7 @@ void ShortcutMap::dispatchEvent(QKeyEvent *e)
     // Don't trigger shortcut if we're autorepeating and the shortcut is
     // grabbed with not accepting autorepeats.
     if (!next || (e->isAutoRepeat() && !next->autorepeat))
-        return;
+        return false;
     // Dispatch next enabled
     if (lcShortcutMap().isDebugEnabled()) {
         if (ambiguousShortcuts.size() > 1) {
@@ -559,6 +552,12 @@ void ShortcutMap::dispatchEvent(QKeyEvent *e)
     }
     QShortcutEvent se(next->keyseq, next->id, enabledShortcuts > 1);
     QCoreApplication::sendEvent(const_cast<QObject *>(next->owner), &se);
+
+    QAction *action = qobject_cast<QAction *>(next->owner);
+    if (action)
+        return action->isEnabled();
+
+    return true;
 }
 
 } // namespace Terminal::Internal