From ba378b2a43ecf7bece799ed155f30b0844769d59 Mon Sep 17 00:00:00 2001
From: Christian Burger <christian@krikkel.de>
Date: Fri, 20 May 2022 20:41:45 +0200
Subject: [PATCH] window manager: inverting all windows' visibility

Introducing a method that makes all visible windows invisible and vice-
versa.
---
 DemoApp.cpp                              |  4 ++++
 TilingWindowManager.cpp                  | 21 +++++++++++++++++++++
 include/kNCurses/TilingWindowManager.hpp |  1 +
 3 files changed, 26 insertions(+)

diff --git a/DemoApp.cpp b/DemoApp.cpp
index 1fe0f30..fc3c1df 100644
--- a/DemoApp.cpp
+++ b/DemoApp.cpp
@@ -130,6 +130,10 @@ namespace krikkel::NCurses
                         windowManager->updateLayout();
                         windowManager->refresh();
                         break;
+                    case KEY_F(4):
+                        windowManager->invertWindowsVisibility();
+                        windowManager->updateLayout();
+                        windowManager->refresh();
                     case KEY_F(5):
                         windowManager->refresh();
                         break;
diff --git a/TilingWindowManager.cpp b/TilingWindowManager.cpp
index ca4efda..3ddeb41 100644
--- a/TilingWindowManager.cpp
+++ b/TilingWindowManager.cpp
@@ -65,6 +65,27 @@ namespace krikkel::NCurses
         }
     }
 
+    void TilingWindowManager::invertWindowsVisibility()
+    {
+        list<WindowStackElement> originallyVisibleStack(visibleStack);
+        list<WindowStackElement>::iterator originallyVisibleStackIterator = originallyVisibleStack.begin();
+        visibleStack.clear();
+
+        for(WindowStackElement currentWindowElement : stack)
+            if(originallyVisibleStackIterator != originallyVisibleStack.end()
+                    && currentWindowElement == *originallyVisibleStackIterator)
+            {
+                currentWindowElement.first->hidden = true;
+                ++originallyVisibleStackIterator;
+                continue;
+            }
+            else
+            {
+                currentWindowElement.first->hidden = false;
+                visibleStack.push_back(currentWindowElement);
+            }
+    }
+
     int TilingWindowManager::resize(int rows, int cols)
     {
         int result = Window::resize(rows, cols);
diff --git a/include/kNCurses/TilingWindowManager.hpp b/include/kNCurses/TilingWindowManager.hpp
index f900227..8ea8e2c 100644
--- a/include/kNCurses/TilingWindowManager.hpp
+++ b/include/kNCurses/TilingWindowManager.hpp
@@ -45,6 +45,7 @@ namespace krikkel::NCurses
 
             void hideWindow(Window *window);
             void showWindow(Window *window);
+            void invertWindowsVisibility();
 
         protected:
             /// @todo rename to `nCursesMutex`?