BuildstepConfigWidgets can be set expanded by default

(cherry picked from commit 517aef8b8bc705b055b10ef0b7b0b234fd80b920)

Change-Id: I517aef8b8bc705b055b10ef0b7b0b234fd80b920x
Merge-request: 2193
Reviewed-on: http://codereview.qt.nokia.com/398Reviewed-by: hjk <qthjk@ovi.com>

src/plugins/projectexplorer/buildstep.h

@@ -167,6 +167,7 @@ public:
     virtual void init() = 0;
     virtual QString summaryText() const = 0;
     virtual QString displayName() const = 0;
+    virtual bool showExpanded() const { return false; }
 signals:
     void updateSummary();
 };

src/plugins/projectexplorer/buildstepspage.cpp

@@ -159,6 +159,8 @@ void BuildStepListWidget::addBuildStepWidget(int pos, BuildStep *step)
     s.detailsWidget = new Utils::DetailsWidget(this);
     s.detailsWidget->setSummaryText(s.widget->summaryText());
     s.detailsWidget->setWidget(s.widget);
+    if(s.widget->showExpanded())
+        s.detailsWidget->setState(Utils::DetailsWidget::Expanded);
 
     // layout
     Utils::FadingPanel *toolWidget = new Utils::FadingPanel(s.detailsWidget);