1 files changed, 58 insertions, 11 deletions

diff --git a/src/ui.c b/src/ui.c
index 296f658..9f1ce74 100644
--- a/src/ui.c
+++ b/src/ui.c
@@ -1,9 +1,9 @@
 #include "ui.h"
 
-FloatingWindow createFloatingWindow(const char* title)
+FloatingWindow createFloatingWindow(const char* title, Rectangle rect)
 {
   FloatingWindow window = (FloatingWindow){
-    .rect = (Rectangle){0.0, 0.0, 100.0, 100.0},
+    .rect = rect,
     .minimized = false,
     .moving = false,
     .resizing = false,
@@ -187,15 +187,24 @@ void updateFloatingWindowNotMinimized(FloatingWindow* window)
               window->rect.y + window->rect.height - 20, 1, GREEN);
 }
 
-void updateFloatingWindow(FloatingWindow* window)
+bool updateFloatingWindow(FloatingWindow* window)
 {
+  bool focusOnThisWindow = false;
+  bool isMouseLeftClick = IsMouseButtonPressed(MOUSE_LEFT_BUTTON);
+  
   // Window movement and resize input and collision check.
-  if (IsMouseButtonPressed(MOUSE_LEFT_BUTTON) && !window->moving
-      && !window->resizing)
+  if (isMouseLeftClick && !window->moving && !window->resizing)
   {
     floatingWindowTransformCollisionCheck(window);
   }
 
+  // Focus on window.
+  if (isMouseLeftClick && CheckCollisionPointRec(GetMousePosition(),
+                                                 window->rect))
+  {
+    focusOnThisWindow = true;
+  }
+
   // Window movement and resize update.
   if (window->moving)
   {
@@ -206,7 +215,7 @@ void updateFloatingWindow(FloatingWindow* window)
     updateFloatingWindowResizing(window);
   }
 
-  // window and content drawing with scissor and scroll area
+  // Window and content drawing with scissor and scroll area.
   if(window->minimized)
   {
     updateFloatingWindowMinimized(window);
@@ -215,17 +224,55 @@ void updateFloatingWindow(FloatingWindow* window)
   {
     updateFloatingWindowNotMinimized(window);
   }
+
+  return focusOnThisWindow;
+}
+
+void initWindowManager(WindowManager* wm)
+{
+  memset(wm, 0, sizeof(WindowManager));
+}
+
+void updateWindowManager(WindowManager* wm)
+{
+  int focusOnto = -1;
+  
+  for (int index = 0; index < wm->windowCount; ++index)
+  {
+    if (updateFloatingWindow(&wm->windows[index])
+        && index != wm->windowCount - 1)
+    {
+      focusOnto = index;
+    }
+  }
+
+  if (focusOnto != -1)
+  {
+    focusOnWindow(wm, focusOnto);
+  }
 }
 
-void initWindowManager(WindowManager* windowManager)
+void addWindowToWindowManager(WindowManager* wm, FloatingWindow window)
 {
-  memset(windowManager, 0, sizeof(WindowManager));
+  if (wm->windowCount < UI_WINDOW_MAX)
+  {
+    wm->windows[wm->windowCount] = window;
+    ++wm->windowCount;
+  }
+  else
+  {
+    TraceLog(LOG_ERROR, "'wm->windowCount' went over the limit");
+  }
 }
 
-void updateWindowManager(WindowManager* windowManager)
+void focusOnWindow(WindowManager* wm, int windowIndex)
 {
-  for (int index = 0; index < windowManager->windowCount; ++index)
+  FloatingWindow window = wm->windows[windowIndex];
+  
+  for (int index = windowIndex + 1; index < wm->windowCount; ++index)
   {
-    updateFloatingWindow(&windowManager->windows[index]);
+    wm->windows[index - 1] = wm->windows[index];
   }
+
+  wm->windows[wm->windowCount - 1] = window;
 }