Forward some events from QSearchField's internal lineEdit to QSearchField, so we can be aware of some events (like getting/losing focus).

Implemented for non-mac; something certainly still needs to be done for Mac

3rdparty/qocoa/qsearchfield.h

@@ -27,6 +27,7 @@ signals:
 
 protected:
     void resizeEvent(QResizeEvent*);
+    bool eventFilter(QObject*, QEvent*);
 
 private:
     friend class QSearchFieldPrivate;

3rdparty/qocoa/qsearchfield_nonmac.cpp

@@ -22,6 +22,8 @@ THE SOFTWARE.
 
 #include "qsearchfield.h"
 
+#include <QApplication>
+#include <QEvent>
 #include <QLineEdit>
 #include <QVBoxLayout>
 #include <QToolButton>
@@ -79,6 +81,8 @@ QSearchField::QSearchField(QWidget *parent) : QWidget(parent)
     QVBoxLayout *layout = new QVBoxLayout(this);
     layout->setMargin(0);
     layout->addWidget(lineEdit);
+
+    lineEdit->installEventFilter(this);
 }
 
 void QSearchField::setText(const QString &text)
@@ -150,3 +154,18 @@ void QSearchField::resizeEvent(QResizeEvent *resizeEvent)
     const int y = (height() - pimpl->clearButton->height())/2;
     pimpl->clearButton->move(x, y);
 }
+
+bool QSearchField::eventFilter(QObject *o, QEvent *e)
+{
+    if (pimpl && pimpl->lineEdit && o == pimpl->lineEdit) {
+        // Forward some lineEdit events to QSearchField (only those we need for
+        // now, but some might be added later if needed)
+        switch (e->type()) {
+            case QEvent::FocusIn:
+            case QEvent::FocusOut:
+                QApplication::sendEvent(this, e);
+            break;
+        }
+    }
+    QWidget::eventFilter(o, e);
+}

src/widgets/didyoumean.cpp

@@ -93,8 +93,6 @@ bool DidYouMean::eventFilter(QObject* object, QEvent* event) {
 
       break;
 
-    // FIXME: FocusOut doesn't work with QSearchField, which is used as buddy
-    // in Spotify Service :(
     case QEvent::FocusOut:
     case QEvent::WindowDeactivate:
       hide();

src/widgets/didyoumean.h

@@ -59,7 +59,7 @@ private:
   QString did_you_mean_;
   QString press_enter_;
 
-  // Size of the text to display, according to QFont above
+  // Size of the text to display, according to QFonts above.
   // Stored here to avoid to recompute them each time
   int did_you_mean_size_;
   int press_enter_size_;