Enable filter items on availability

If there are items inside the results pane that match the filter
item filtering for these kind of results will be enabled.

plugins/autotest/testresultmodel.cpp

@@ -109,6 +109,7 @@ void TestResultModel::addTestResult(const TestResult &testResult)
     beginInsertRows(QModelIndex(), m_testResults.size(), m_testResults.size());
     m_testResults.append(testResult);
     endInsertRows();
+    m_availableResultTypes.insert(testResult.result());
 }
 
 void TestResultModel::clearTestResults()
@@ -121,6 +122,7 @@ void TestResultModel::clearTestResults()
     m_maxWidthOfFileName = 0;
     m_widthOfLineNumber = 0;
     endRemoveRows();
+    m_availableResultTypes.clear();
 }
 
 TestResult TestResultModel::testResult(const QModelIndex &index) const

plugins/autotest/testresultmodel.h

@@ -52,6 +52,7 @@ public:
 
     void enableAllResultTypes();
     void toggleTestResultType(ResultType type);
+    bool hasResultType(ResultType type) { return m_availableResultTypes.contains(type); }
 
 signals:
 
@@ -63,6 +64,7 @@ private:
     int m_maxWidthOfFileName;
     int m_lastMaxWidthIndex;
     QFont m_measurementFont;
+    QSet<ResultType> m_availableResultTypes;
 };
 
 class TestResultFilterModel : public QSortFilterProxyModel

plugins/autotest/testresultspane.cpp

@@ -86,6 +86,7 @@ void TestResultsPane::createToolButtons()
     m_filterButton->setPopupMode(QToolButton::InstantPopup);
     m_filterMenu = new QMenu(m_filterButton);
     initializeFilterMenu();
+    connect(m_filterMenu, &QMenu::aboutToShow, this, &TestResultsPane::updateFilterMenu);
     connect(m_filterMenu, &QMenu::triggered, this, &TestResultsPane::filterMenuTriggered);
     m_filterButton->setMenu(m_filterMenu);
 }
@@ -241,7 +242,6 @@ void TestResultsPane::onRunSelectedTriggered()
 void TestResultsPane::initializeFilterMenu()
 {
     QMap<ResultType, QString> textAndType;
-    textAndType.clear();
     textAndType.insert(ResultType::PASS, QLatin1String("Pass"));
     textAndType.insert(ResultType::FAIL, QLatin1String("Fail"));
     textAndType.insert(ResultType::EXPECTED_FAIL, QLatin1String("Expected Fail"));
@@ -260,6 +260,14 @@ void TestResultsPane::initializeFilterMenu()
     }
 }
 
+void TestResultsPane::updateFilterMenu()
+{
+    foreach (QAction *action, m_filterMenu->actions()) {
+        action->setEnabled(m_model->hasResultType(
+                               static_cast<ResultType>(action->data().value<int>())));
+    }
+}
+
 void TestResultsPane::filterMenuTriggered(QAction *action)
 {
     m_filterModel->toggleTestResultType(static_cast<ResultType>(action->data().value<int>()));

plugins/autotest/testresultspane.h

@@ -76,11 +76,12 @@ private slots:
     void onItemActivated(const QModelIndex &index);
     void onRunAllTriggered();
     void onRunSelectedTriggered();
-    void initializeFilterMenu();
+    void updateFilterMenu();
     void filterMenuTriggered(QAction *action);
 
 private:
     explicit TestResultsPane(QObject *parent = 0);
+    void initializeFilterMenu();
     void createToolButtons();
     void onTestRunStarted();
     void onTestRunFinished();