Make BuildStepConfigWidget hideable

Some steps only want to show a summary text.

Change-Id: I125fa90c13f0757ea78b6b50834c43b1beb484c5
Reviewed-by: Nikolai Kosjar
Reviewed-by: Daniel Teske <daniel.teske@nokia.com>

src/libs/utils/detailswidget.cpp

@@ -139,8 +139,10 @@ QPixmap DetailsWidgetPrivate::cacheBackground(const QSize &size, bool expanded)
     pixmap.fill(Qt::transparent);
     QPainter p(&pixmap);
 
-    int topHeight = qMax(m_detailsButton->height(),
+    int topHeight = m_useCheckBox ? m_summaryCheckBox->height() : m_summaryLabel->height();
-                         m_useCheckBox ? m_summaryCheckBox->height() : m_summaryLabel->height());
+    if (m_state == DetailsWidget::Expanded || m_state == DetailsWidget::Collapsed) // Details Button is shown
+        topHeight = qMax(m_detailsButton->height(), topHeight);
+
     QRect topRect(0, 0, size.width(), topHeight);
     QRect fullRect(0, 0, size.width(), size.height());
 #ifdef Q_WS_MAC
@@ -175,7 +177,7 @@ void DetailsWidgetPrivate::updateControls()
     if (m_widget)
         m_widget->setVisible(m_state == DetailsWidget::Expanded || m_state == DetailsWidget::NoSummary);
     m_detailsButton->setChecked(m_state == DetailsWidget::Expanded && m_widget);
-    m_detailsButton->setVisible(m_state != DetailsWidget::NoSummary);
+    m_detailsButton->setVisible(m_state == DetailsWidget::Expanded || m_state == DetailsWidget::Collapsed);
     m_summaryLabel->setVisible(m_state != DetailsWidget::NoSummary && !m_useCheckBox);
     m_summaryCheckBox->setVisible(m_state != DetailsWidget::NoSummary && m_useCheckBox);
 
@@ -269,7 +271,7 @@ void DetailsWidget::paintEvent(QPaintEvent *paintEvent)
     QPoint topLeft(topLeftWidget->geometry().left() - MARGIN, contentsRect().top());
     const QRect paintArea(topLeft, contentsRect().bottomRight());
 
-    if (d->m_state != Expanded) {
+    if (d->m_state == Collapsed) {
         if (d->m_collapsedPixmap.isNull() ||
             d->m_collapsedPixmap.size() != size())
             d->m_collapsedPixmap = d->cacheBackground(paintArea.size(), false);

src/libs/utils/detailswidget.h

@@ -56,7 +56,8 @@ public:
     enum State {
         Expanded,
         Collapsed,
-        NoSummary
+        NoSummary,
+        OnlySummary
     };
 
     explicit DetailsWidget(QWidget *parent = 0);

src/plugins/projectexplorer/buildstep.h

@@ -140,6 +140,7 @@ public:
     virtual QString summaryText() const = 0;
     virtual QString additionalSummaryText() const { return QString(); }
     virtual QString displayName() const = 0;
+    virtual bool showWidget() const { return true; }
 
 signals:
     void updateSummary();

src/plugins/projectexplorer/buildstepspage.cpp

@@ -180,6 +180,8 @@ void BuildStepListWidget::init(BuildStepList *bsl)
 
     for (int i = 0; i < bsl->count(); ++i) {
         addBuildStep(i);
+        // addBuilStep expands the config widget by default, which we don't want here
+        if (m_buildStepsData.at(i)->widget->showWidget())
             m_buildStepsData.at(i)->detailsWidget->setState(Utils::DetailsWidget::Collapsed);
     }
 
@@ -261,7 +263,11 @@ void BuildStepListWidget::addBuildStep(int pos)
     BuildStep *newStep = m_buildStepList->at(pos);
     addBuildStepWidget(pos, newStep);
     BuildStepsWidgetData *s = m_buildStepsData.at(pos);
+    // Expand new build steps by default
+    if (s->widget->showWidget())
         s->detailsWidget->setState(Utils::DetailsWidget::Expanded);
+    else
+        s->detailsWidget->setState(Utils::DetailsWidget::OnlySummary);
 
     m_noStepsLabel->setVisible(false);
     updateBuildStepButtonsState();