4 files changed, 33 insertions, 11 deletions
diff --git a/Source/CursesDialog/cmCursesLongMessageForm.cxx b/Source/CursesDialog/cmCursesLongMessageForm.cxx
index 91d759e..afd2b6b 100644
--- a/Source/CursesDialog/cmCursesLongMessageForm.cxx
+++ b/Source/CursesDialog/cmCursesLongMessageForm.cxx
@@ -35,6 +35,22 @@ cmCursesLongMessageForm::~cmCursesLongMessageForm()
   }
 }
 
+void cmCursesLongMessageForm::UpdateContent(std::string const& output,
+                                            std::string const& title)
+{
+  this->Title = title;
+
+  if (!output.empty() && this->Messages.size() < MAX_CONTENT_SIZE) {
+    this->Messages.append("\n" + output);
+    form_driver(this->Form, REQ_NEW_LINE);
+    this->DrawMessage(output.c_str());
+  }
+
+  this->UpdateStatusBar();
+  touchwin(stdscr);
+  refresh();
+}
+
 void cmCursesLongMessageForm::UpdateStatusBar()
 {
   int x;
diff --git a/Source/CursesDialog/cmCursesLongMessageForm.h b/Source/CursesDialog/cmCursesLongMessageForm.h
index a482e61..da9fea2 100644
--- a/Source/CursesDialog/cmCursesLongMessageForm.h
+++ b/Source/CursesDialog/cmCursesLongMessageForm.h
@@ -27,6 +27,8 @@ public:
   cmCursesLongMessageForm(cmCursesLongMessageForm const&) = delete;
   cmCursesLongMessageForm& operator=(cmCursesLongMessageForm const&) = delete;
 
+  void UpdateContent(std::string const& output, std::string const& title);
+
   // Description:
   // Handle user input.
   void HandleInput() override;
diff --git a/Source/CursesDialog/cmCursesMainForm.cxx b/Source/CursesDialog/cmCursesMainForm.cxx
index 2c92835..65376d1 100644
--- a/Source/CursesDialog/cmCursesMainForm.cxx
+++ b/Source/CursesDialog/cmCursesMainForm.cxx
@@ -453,11 +453,11 @@ void cmCursesMainForm::UpdateProgress(const std::string& msg, float prog)
     this->LastProgress.append(progressBarCompleted, '#');
     this->LastProgress.append(progressBarWidth - progressBarCompleted, ' ');
     this->LastProgress += "] " + msg + "...";
+    this->DisplayOutputs(std::string());
   } else {
     this->Outputs.emplace_back(msg);
+    this->DisplayOutputs(msg);
   }
-
-  this->DisplayOutputs();
 }
 
 int cmCursesMainForm::Configure(int noconfigure)
@@ -589,7 +589,7 @@ void cmCursesMainForm::AddError(const std::string& message,
 {
   this->Outputs.emplace_back(message);
   this->HasNonStatusOutputs = true;
-  this->DisplayOutputs();
+  this->DisplayOutputs(message);
 }
 
 void cmCursesMainForm::RemoveEntry(const char* value)
@@ -995,18 +995,22 @@ void cmCursesMainForm::ResetOutputs()
   this->LastProgress.clear();
 }
 
-void cmCursesMainForm::DisplayOutputs()
+void cmCursesMainForm::DisplayOutputs(std::string const& newOutput)
 {
   int xi;
   int yi;
   getmaxyx(stdscr, yi, xi);
 
-  auto newLogForm = new cmCursesLongMessageForm(
-    this->Outputs, this->LastProgress.c_str(),
-    cmCursesLongMessageForm::ScrollBehavior::ScrollDown);
-  CurrentForm = newLogForm;
-  this->LogForm.reset(newLogForm);
-  this->LogForm->Render(1, 1, xi, yi);
+  if (CurrentForm != this->LogForm.get()) {
+    auto newLogForm = new cmCursesLongMessageForm(
+      this->Outputs, this->LastProgress.c_str(),
+      cmCursesLongMessageForm::ScrollBehavior::ScrollDown);
+    CurrentForm = newLogForm;
+    this->LogForm.reset(newLogForm);
+    this->LogForm->Render(1, 1, xi, yi);
+  } else {
+    this->LogForm->UpdateContent(newOutput, this->LastProgress);
+  }
 }
 
 const char* cmCursesMainForm::s_ConstHelpMessage =
diff --git a/Source/CursesDialog/cmCursesMainForm.h b/Source/CursesDialog/cmCursesMainForm.h
index b7c204d..2e06b90 100644
--- a/Source/CursesDialog/cmCursesMainForm.h
+++ b/Source/CursesDialog/cmCursesMainForm.h
@@ -129,7 +129,7 @@ protected:
   void ResetOutputs();
 
   // Display the current progress and output
-  void DisplayOutputs();
+  void DisplayOutputs(std::string const& newOutput);
 
   // Copies of cache entries stored in the user interface
   std::vector<cmCursesCacheEntryComposite> Entries;