LayoutSaver: Add some utilities

Author: iamsergio

src/LayoutSaver.cpp

@@ -528,6 +528,19 @@ bool LayoutSaver::Frame::isValid() const
     return true;
 }
 
+bool LayoutSaver::Frame::hasSingleDockWidget() const
+{
+    return dockWidgets.size() == 1;
+}
+
+LayoutSaver::DockWidget::Ptr LayoutSaver::Frame::singleDockWidget() const
+{
+    if (!hasSingleDockWidget())
+        return {};
+
+   return dockWidgets.first();
+}
+
 void LayoutSaver::Frame::scaleSizes(const ScalingInfo &scalingInfo)
 {
     scalingInfo.applyFactorsTo(geometry);
@@ -621,6 +634,16 @@ bool LayoutSaver::FloatingWindow::isValid() const
     return true;
 }
 
+bool LayoutSaver::FloatingWindow::hasSingleDockWidget() const
+{
+    return multiSplitterLayout.hasSingleDockWidget();
+}
+
+LayoutSaver::DockWidget::Ptr LayoutSaver::FloatingWindow::singleDockWidget() const
+{
+    return multiSplitterLayout.singleDockWidget();
+}
+
 void LayoutSaver::FloatingWindow::scaleSizes(const ScalingInfo &scalingInfo)
 {
     scalingInfo.applyFactorsTo(/*by-ref*/geometry);
@@ -747,6 +770,19 @@ bool LayoutSaver::MultiSplitter::isValid() const
     return true;
 }
 
+bool LayoutSaver::MultiSplitter::hasSingleDockWidget() const
+{
+    return frames.size() == 1 && frames.cbegin()->hasSingleDockWidget();
+}
+
+LayoutSaver::DockWidget::Ptr LayoutSaver::MultiSplitter::singleDockWidget() const
+{
+    if (!hasSingleDockWidget())
+        return {};
+
+    return frames.cbegin()->singleDockWidget();
+}
+
 void LayoutSaver::MultiSplitter::scaleSizes(const ScalingInfo &)
 {
     // scalingInfo.applyFactorsTo(/*by-ref*/size);

src/LayoutSaver_p.h

@@ -173,6 +173,11 @@ struct LayoutSaver::Frame
 {
     bool isValid() const;
 
+    bool hasSingleDockWidget() const;
+
+    /// @brief in case this frame only has one frame, returns the name of that dock widget
+    LayoutSaver::DockWidget::Ptr singleDockWidget() const;
+
     /// Iterates through the layout and patches all absolute sizes. See RestoreOption_RelativeToMainWindow.
     void scaleSizes(const ScalingInfo &scalingInfo);
 
@@ -192,6 +197,10 @@ struct LayoutSaver::Frame
 struct LayoutSaver::MultiSplitter
 {
     bool isValid() const;
+
+    bool hasSingleDockWidget() const;
+    LayoutSaver::DockWidget::Ptr singleDockWidget() const;
+
     /// Iterates through the layout and patches all absolute sizes. See RestoreOption_RelativeToMainWindow.
     void scaleSizes(const ScalingInfo &scalingInfo);
 
@@ -208,6 +217,9 @@ struct LayoutSaver::FloatingWindow
 
     bool isValid() const;
 
+    bool hasSingleDockWidget() const;
+    LayoutSaver::DockWidget::Ptr singleDockWidget() const;
+
     /// Iterates through the layout and patches all absolute sizes. See RestoreOption_RelativeToMainWindow.
     void scaleSizes(const ScalingInfo &);