Many bugfixes related to ProjectionObserver.

* Correct handling of relative metrics in UI
* undo(), reset() methods added
* Main class responsible for undoing and resetting both history
  and the observer (MUST BE AT THE SAME TIME! -- this might indicate
  a design issue to be addressed in the future)

1 files changed, 2 insertions, 6 deletions

diff --git a/main.cpp b/main.cpp
index 6eed197..a5aaf68 100644
--- a/main.cpp
+++ b/main.cpp
@@ -247,14 +247,10 @@ int main(int argc, char **argv)
             m->rpBarChart, &BarChart::brushItem);
 
     // Recompute values whenever projection changes
-    ProjectionObserver projectionObserver(X, cpIndices, m->projectionHistory);
+    ProjectionObserver projectionObserver(X, cpIndices);
     m->projectionObserver = &projectionObserver;
     QObject::connect(m->projectionHistory, &ProjectionHistory::mapAdded,
-            m->projectionObserver, &ProjectionObserver::setMap);
-    QObject::connect(m->projectionHistory, &ProjectionHistory::undoPerformed,
-            m->projectionObserver, &ProjectionObserver::setMap);
-    QObject::connect(m->projectionHistory, &ProjectionHistory::resetPerformed,
-            m->projectionObserver, &ProjectionObserver::setMap);
+            m->projectionObserver, &ProjectionObserver::addMap);
     QObject::connect(m->projectionObserver, &ProjectionObserver::cpValuesChanged,
             m->cpPlot, &Scatterplot::setColorData);
     QObject::connect(m->projectionObserver, &ProjectionObserver::rpValuesChanged,