Change the QInputMethodQueryEvent to be able to query a set of properties

The event now takes a Qt::InputMethodQueries bitfield. Like this the
editor can set all properties in one go on the event instead of
having to process many query events.

Change-Id: Ifd9d7328a9fce0c21625371ec744ea2090e163be
Reviewed-on: http://codereview.qt-project.org/4448
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>

src/gui/kernel/qevent.cpp

@@ -1787,9 +1787,9 @@ void QInputMethodEvent::setCommitString(const QString &commitString, int replace
     The object should call setValue() on the event to fill in the requested
     data before calling accept().
 */
-QInputMethodQueryEvent::QInputMethodQueryEvent(Qt::InputMethodQuery query)
+QInputMethodQueryEvent::QInputMethodQueryEvent(Qt::InputMethodQueries queries)
     : QEvent(InputMethodQuery),
-      m_query(query)
+      m_queries(queries)
 {
 }
 
@@ -1797,6 +1797,27 @@ QInputMethodQueryEvent::~QInputMethodQueryEvent()
 {
 }
 
+
+void QInputMethodQueryEvent::setValue(Qt::InputMethodQuery q, const QVariant &v)
+{
+    for (int i = 0; i < m_values.size(); ++i) {
+        if (m_values.at(i).query == q) {
+            m_values[i].value = v;
+            return;
+        }
+    }
+    QueryPair pair = { q, v };
+    m_values.append(pair);
+}
+
+QVariant QInputMethodQueryEvent::value(Qt::InputMethodQuery q) const
+{
+    for (int i = 0; i < m_values.size(); ++i)
+        if (m_values.at(i).query == q)
+            return m_values.at(i).value;
+    return QVariant();
+}
+
 /*!
     \fn Qt::InputMethodQuery QInputMethodQueryEvent::query() const
 

src/gui/kernel/qevent.h

@@ -52,6 +52,7 @@
 #include <QtGui/qmime.h>
 #include <QtCore/qvariant.h>
 #include <QtCore/qmap.h>
+#include <QtCore/qvector.h>
 #include <QtCore/qset.h>
 #include <QtCore/qfile.h>
 
@@ -451,16 +452,20 @@ private:
 class Q_GUI_EXPORT QInputMethodQueryEvent : public QEvent
 {
 public:
-    QInputMethodQueryEvent(Qt::InputMethodQuery query);
+    QInputMethodQueryEvent(Qt::InputMethodQueries queries);
     ~QInputMethodQueryEvent();
 
-    Qt::InputMethodQuery query() const { return m_query; }
+    Qt::InputMethodQueries queries() const { return m_queries; }
 
-    void setValue(const QVariant &v) { m_value = v; }
-    QVariant value() const { return m_value; }
+    void setValue(Qt::InputMethodQuery q, const QVariant &v);
+    QVariant value(Qt::InputMethodQuery q) const;
 private:
-    Qt::InputMethodQuery m_query;
-    QVariant m_value;
+    Qt::InputMethodQueries m_queries;
+    struct QueryPair {
+        Qt::InputMethodQuery query;
+        QVariant value;
+    };
+    QVector<QueryPair> m_values;
 };
 
 #endif // QT_NO_INPUTMETHOD

src/gui/kernel/qinputpanel.cpp

@@ -101,7 +101,7 @@ QRectF QInputPanel::cursorRectangle() const
 
     QInputMethodQueryEvent query(Qt::ImCursorRectangle);
     QGuiApplication::sendEvent(d->inputItem.data(), &query);
-    QRect r = query.value().toRect();
+    QRect r = query.value(Qt::ImCursorRectangle).toRect();
     if (!r.isValid())
         return QRect();
 

src/widgets/kernel/qwidget.cpp

@@ -8358,9 +8358,14 @@ bool QWidget::event(QEvent *event)
     case QEvent::InputMethodQuery:
         if (testAttribute(Qt::WA_InputMethodEnabled)) {
             QInputMethodQueryEvent *query = static_cast<QInputMethodQueryEvent *>(event);
-            QVariant v = inputMethodQuery(query->query());
-
-            query->setValue(v);
+            Qt::InputMethodQueries queries = query->queries();
+            for (uint i = 0; i < 32; ++i) {
+                Qt::InputMethodQuery q = (Qt::InputMethodQuery)(int)(queries & (1<<i));
+                if (q) {
+                    QVariant v = inputMethodQuery(q);
+                    query->setValue(q, v);
+                }
+            }
             query->accept();
             break;
         }