CMake: Allow CMake configuration to be forced to string type

This allows editing values with misidentified types in Project Mode.

Change-Id: Ic74da2ca71cc9046cbbeb1202075976c9edd28b7
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

src/plugins/cmakeprojectmanager/cmakebuildsettingswidget.cpp

@@ -140,6 +140,8 @@ CMakeBuildSettingsWidget::CMakeBuildSettingsWidget(CMakeBuildConfiguration *bc)
             tree, [tree](const QModelIndex &idx) { tree->edit(idx); });
     m_configView = tree;
 
+    m_configView->viewport()->installEventFilter(this);
+
     m_configFilterModel->setSourceModel(m_configModel);
     m_configFilterModel->setFilterKeyColumn(0);
     m_configFilterModel->setFilterRole(ConfigModel::ItemIsAdvancedRole);
@@ -339,6 +341,9 @@ void CMakeBuildSettingsWidget::updateFromKit()
 
 static QModelIndex mapToSource(const QAbstractItemView *view, const QModelIndex &idx)
 {
+    if (!idx.isValid())
+        return idx;
+
     QAbstractItemModel *model = view->model();
     QModelIndex result = idx;
     while (QSortFilterProxyModel *proxy = qobject_cast<QSortFilterProxyModel *>(model)) {
@@ -356,5 +361,30 @@ void CMakeBuildSettingsWidget::updateSelection(const QModelIndex &current, const
         m_editButton->setEnabled(currentModelIndex.flags().testFlag(Qt::ItemIsEditable));
 }
 
+bool CMakeBuildSettingsWidget::eventFilter(QObject *target, QEvent *event)
+{
+    // handle context menu events:
+    if (target != m_configView->viewport() || event->type() != QEvent::ContextMenu)
+        return false;
+
+    auto e = static_cast<QContextMenuEvent *>(event);
+    const QModelIndex idx = mapToSource(m_configView, m_configView->indexAt(e->pos()));
+    if (!idx.isValid())
+        return false;
+
+    QMenu *menu = new QMenu(this);
+    connect(menu, &QMenu::triggered, menu, &QMenu::deleteLater);
+
+    QAction *forceToStringAction = new QAction(tr("Force to String"));
+    forceToStringAction->setEnabled(m_configModel->canForceToString(idx));
+    menu->addAction(forceToStringAction);
+    connect(forceToStringAction, &QAction::triggered, this, [this, idx]() { m_configModel->forceToString(idx); });
+
+    menu->move(e->globalPos());
+    menu->show();
+
+    return true;
+}
+
 } // namespace Internal
 } // namespace CMakeProjectManager

src/plugins/cmakeprojectmanager/cmakebuildsettingswidget.h

@@ -66,6 +66,8 @@ private:
 
     void updateSelection(const QModelIndex &current, const QModelIndex &previous);
 
+    bool eventFilter(QObject *target, QEvent *event);
+
     CMakeBuildConfiguration *m_buildConfiguration;
     QTreeView *m_configView;
     ConfigModel *m_configModel;

src/plugins/cmakeprojectmanager/configmodel.cpp

@@ -134,6 +134,26 @@ bool ConfigModel::hasCMakeChanges() const
     return Utils::contains(m_configuration, [](const InternalDataItem &i) { return i.isCMakeChanged; });
 }
 
+bool ConfigModel::canForceToString(const QModelIndex &idx) const
+{
+    if (idx.model() != const_cast<ConfigModel *>(this) || idx.column() != 1)
+        return false;
+    Utils::TreeItem *item = itemForIndex(idx);
+    auto cmti = dynamic_cast<Internal::ConfigModelTreeItem *>(item);
+    return cmti && (cmti->dataItem->type != DataItem::STRING);
+}
+
+void ConfigModel::forceToString(const QModelIndex &idx)
+{
+    QTC_ASSERT(canForceToString(idx), return);
+    Utils::TreeItem *item = itemForIndex(idx);
+    auto cmti = dynamic_cast<Internal::ConfigModelTreeItem *>(item);
+
+    cmti->dataItem->type = DataItem::STRING;
+    const QModelIndex valueIdx = idx.sibling(1, idx.column());
+    emit dataChanged(valueIdx, valueIdx);
+}
+
 QList<ConfigModel::DataItem> ConfigModel::configurationChanges() const
 {
     const QList<InternalDataItem> tmp

src/plugins/cmakeprojectmanager/configmodel.h

@@ -75,6 +75,9 @@ public:
     bool hasChanges() const;
     bool hasCMakeChanges() const;
 
+    bool canForceToString(const QModelIndex &idx) const;
+    void forceToString(const QModelIndex &idx);
+
     QList<DataItem> configurationChanges() const;
 
 private: