ClangTools: Enable filtering in config widget

This makes it easy to search for certain checks.

Fixes: QTCREATORBUG-24851
Change-Id: I94521aade4b54e80113aa31db9bed91ecb230016
Reviewed-by: David Schulz <david.schulz@qt.io>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>

src/plugins/clangtools/clazychecks.ui

@@ -63,13 +63,23 @@
             </sizepolicy>
            </property>
            <property name="title">
-            <string>Topic Filter</string>
+            <string>Filters</string>
            </property>
            <layout class="QVBoxLayout" name="verticalLayout_3">
+            <item>
+             <widget class="Utils::FancyLineEdit" name="filterLineEdit">
+              <property name="sizePolicy">
+               <sizepolicy hsizetype="Minimum" vsizetype="Fixed">
+                <horstretch>0</horstretch>
+                <verstretch>0</verstretch>
+               </sizepolicy>
+              </property>
+             </widget>
+            </item>
             <item>
              <widget class="QPushButton" name="topicsResetButton">
               <property name="text">
-               <string>Reset Filter</string>
+               <string>Reset Topic Filter</string>
               </property>
              </widget>
             </item>
@@ -162,6 +172,11 @@ Set a valid executable first.</string>
    <extends>QLabel</extends>
    <header location="global">utils/infolabel.h</header>
   </customwidget>
+  <customwidget>
+   <class>Utils::FancyLineEdit</class>
+   <extends>QLineEdit</extends>
+   <header location="global">utils/fancylineedit.h</header>
+  </customwidget>
  </customwidgets>
  <resources/>
  <connections/>

src/plugins/clangtools/diagnosticconfigswidget.cpp

@@ -734,6 +734,9 @@ public:
 
     bool filterAcceptsRow(int sourceRow, const QModelIndex &sourceParent) const override
     {
+        if (!QSortFilterProxyModel::filterAcceptsRow(sourceRow, sourceParent))
+            return false;
+
         const QModelIndex index = sourceModel()->index(sourceRow, 0, sourceParent);
         if (!index.isValid())
             return false;
@@ -823,7 +826,16 @@ DiagnosticConfigsWidget::DiagnosticConfigsWidget(const ClangDiagnosticConfigs &c
     m_clazyChecks->invalidExecutableLabel->setElideMode(Qt::ElideNone);
     m_clazySortFilterProxyModel = new ClazyChecksSortFilterModel(this);
     m_clazySortFilterProxyModel->setSourceModel(m_clazyTreeModel.get());
+    m_clazySortFilterProxyModel->setRecursiveFilteringEnabled(true);
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    m_clazySortFilterProxyModel->setAutoAcceptChildRows(true);
+#endif
     setupTreeView(m_clazyChecks->checksView, m_clazySortFilterProxyModel, 2);
+    m_clazyChecks->filterLineEdit->setFiltering(true);
+    m_clazyChecks->filterLineEdit->setPlaceholderText(tr("Textual Filter"));
+    connect(m_clazyChecks->filterLineEdit, &Utils::FancyLineEdit::filterChanged,
+            m_clazySortFilterProxyModel,
+            qOverload<const QString &>(&QSortFilterProxyModel::setFilterRegularExpression));
     m_clazyChecks->checksView->setSortingEnabled(true);
     m_clazyChecks->checksView->sortByColumn(0, Qt::AscendingOrder);
     auto topicsModel = new QStringListModel(Utils::toList(m_clazyTreeModel->topics()), this);
@@ -865,11 +877,21 @@ DiagnosticConfigsWidget::DiagnosticConfigsWidget(const ClangDiagnosticConfigs &c
     m_tidyChecks->setupUi(m_tidyChecksWidget);
     m_tidyChecks->invalidExecutableLabel->setType(Utils::InfoLabel::Warning);
     m_tidyChecks->invalidExecutableLabel->setElideMode(Qt::ElideNone);
-    setupTreeView(m_tidyChecks->checksPrefixesTree, m_tidyTreeModel.get());
+    const auto tidyFilterModel = new QSortFilterProxyModel(this);
+    tidyFilterModel->setRecursiveFilteringEnabled(true);
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+    tidyFilterModel->setAutoAcceptChildRows(true);
+#endif
+    tidyFilterModel->setSourceModel(m_tidyTreeModel.get());
+    setupTreeView(m_tidyChecks->checksPrefixesTree, tidyFilterModel);
+    m_tidyChecks->filterLineEdit->setFiltering(true);
+    connect(m_tidyChecks->filterLineEdit, &Utils::FancyLineEdit::filterChanged, tidyFilterModel,
+            qOverload<const QString &>(&QSortFilterProxyModel::setFilterRegularExpression));
 
     connect(m_tidyChecks->checksPrefixesTree,
             &QTreeView::clicked,
-            [this](const QModelIndex &index) {
+            [this, tidyFilterModel](const QModelIndex &proxyIndex) {
+                const QModelIndex index = tidyFilterModel->mapToSource(proxyIndex);
                 if (index.column() == 2) {
                     if (m_tidyTreeModel->hasChildren(index))
                         return;

src/plugins/clangtools/tidychecks.ui

@@ -49,6 +49,9 @@
        </property>
       </widget>
      </item>
+     <item>
+      <widget class="Utils::FancyLineEdit" name="filterLineEdit"/>
+     </item>
      <item>
       <spacer name="horizontalSpacer">
        <property name="orientation">
@@ -164,6 +167,11 @@ Set a valid executable first.</string>
    <extends>QLabel</extends>
    <header location="global">utils/infolabel.h</header>
   </customwidget>
+  <customwidget>
+   <class>Utils::FancyLineEdit</class>
+   <extends>QLineEdit</extends>
+   <header location="global">utils/fancylineedit.h</header>
+  </customwidget>
  </customwidgets>
  <resources/>
  <connections/>