Move selected windows to ids instead of pointers

src/text_editor/commands.cpp

@@ -144,11 +144,11 @@ bool GlobalCommand(Event event) {
             bool mouse_in_total     = CheckCollisionPointRec(mouse, window->total_rect);
             bool mouse_in_scrollbar = CheckCollisionPointRec(mouse, window->scrollbar_rect);
 
-            if (!DocumentSelected && (mouse_in_scrollbar || ScrollbarSelected)) {
+            if (!IsDocumentSelectionValid() && (mouse_in_scrollbar || IsScrollbarSelectionValid())) {
                 SDL_MouseCursor = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_DEFAULT);
                 SDL_SetCursor(SDL_MouseCursor);
                 break;
-            } else if (mouse_in_total || DocumentSelected) {
+            } else if (mouse_in_total || IsDocumentSelectionValid()) {
                 SDL_MouseCursor = SDL_CreateSystemCursor(SDL_SYSTEM_CURSOR_TEXT);
                 SDL_SetCursor(SDL_MouseCursor);
                 break;
@@ -182,15 +182,15 @@ bool GlobalCommand(Event event) {
     // Handle selected window scrollbar
     // @note: the order here assumes that we won't run this code on the
     // same event as the scroll was pressed
-    if (ScrollbarSelected && Mouse(LEFT_UP)) {
-        Assert(DocumentSelected == NULL);
-        ScrollbarSelected = NULL;
-    } else if (ScrollbarSelected) {
+    if (IsScrollbarSelectionValid() && Mouse(LEFT_UP)) {
+        Assert(DocumentSelected.id == -1);
+        ScrollbarSelected.id = -1;
+    } else if (IsScrollbarSelectionValid()) {
         // :ScrollbarImprovement
         // @todo: it generally works ok but it moves the scrollbar a bit on click
         // when mouse is not even moving
-        Assert(DocumentSelected == NULL);
-        Window  *window     = ScrollbarSelected;
+        Assert(DocumentSelected.id == -1);
+        Window  *window     = GetWindow(ScrollbarSelected);
         View    *view       = GetView(window->active_view);
         Vec2     mouse_vec2 = MouseVec2();
         Scroller s          = ComputeScrollerRect(window);
@@ -202,14 +202,14 @@ bool GlobalCommand(Event event) {
         run_window_command  = false;
     }
 
-    if (DocumentSelected != GetActiveWindow()) {
-        DocumentSelected = NULL;
-    } else if (DocumentSelected && MouseUp()) {
-        Assert(ScrollbarSelected == NULL);
-        DocumentSelected = NULL;
-    } else if (DocumentSelected) {
-        Assert(ScrollbarSelected == NULL);
-        Window *window = DocumentSelected;
+    if (DocumentSelected.id != ActiveWindow.id) {
+        DocumentSelected.id = -1;
+    } else if (IsDocumentSelectionValid() && MouseUp()) {
+        Assert(ScrollbarSelected.id == -1);
+        DocumentSelected.id = -1;
+    } else if (IsDocumentSelectionValid()) {
+        Assert(ScrollbarSelected.id == -1);
+        Window *window = GetWindow(DocumentSelected);
         View   *view   = GetView(window->active_view);
         Buffer *buffer = GetBuffer(view->active_buffer);
 
@@ -293,8 +293,8 @@ bool GlobalCommand(Event event) {
     } else if (Mouse(LEFT)) {
         Vec2I mouse = MouseVec2I();
         {
-            Assert(ScrollbarSelected == NULL);
-            Assert(DocumentSelected == NULL);
+            Assert(ScrollbarSelected.id == -1);
+            Assert(DocumentSelected.id == -1);
 
             Window *window                = GetActiveWindow();
             bool    mouse_in_document     = CheckCollisionPointRec(mouse, window->document_rect);
@@ -302,7 +302,7 @@ bool GlobalCommand(Event event) {
             if (mouse_in_document || mouse_in_line_numbers) {
                 View   *view     = GetView(window->active_view);
                 Buffer *buffer   = GetBuffer(view->active_buffer);
-                DocumentSelected = window;
+                DocumentSelected = window->id;
 
                 Int    p     = ScreenSpaceToBufferPos(window, view, buffer, mouse);
                 Caret &caret = view->carets[0];
@@ -362,7 +362,7 @@ bool GlobalCommand(Event event) {
             if (!window->visible) continue;
             bool mouse_in_scrollbar = CheckCollisionPointRec(mouse, window->scrollbar_rect);
             if (mouse_in_scrollbar) {
-                ScrollbarSelected = window;
+                ScrollbarSelected = window->id;
 
                 View    *view       = GetView(window->active_view);
                 Vec2     mouse_vec2 = MouseVec2();

src/text_editor/management.cpp

@@ -29,9 +29,19 @@ Array<WindowID>  WindowSwitchHistory; // @todo: probably better as a circular bu
 Array<GotoCrumb> GotoCrumbs;
 Int              CaretChangeID;
 
-Window *ScrollbarSelected = NULL;
-Window *DocumentSelected  = NULL;
-Range   DocumentRangeAnchor;
+WindowID ScrollbarSelected = {-1};
+WindowID DocumentSelected  = {-1};
+Range    DocumentRangeAnchor;
+
+inline bool IsDocumentSelectionValid() {
+    if (DocumentSelected.id == -1) return false;
+    return true;
+}
+
+inline bool IsScrollbarSelectionValid() {
+    if (ScrollbarSelected.id == -1) return false;
+    return true;
+}
 
 inline ViewID   AllocViewID(View *view) { return {ViewIDs.id++, view}; }
 inline WindowID AllocWindowID(Window *window) { return {WindowIDs.id++, window}; }
@@ -92,11 +102,6 @@ Buffer *CreateTempBuffer(Allocator allocator, Int size = 4096) {
 }
 
 Window *CreateWindow() {
-    if (Windows.data == NULL) {
-        Reserve(&Windows, 256);
-    }
-    Assert(Windows.len + 1 <= Windows.cap);
-
     Window *w            = Alloc(&Windows);
     w->visible           = true;
     w->draw_scrollbar    = StyleDrawScrollbar;

src/text_editor/text_editor.cpp

@@ -315,7 +315,7 @@ int main()
         }
 
         WaitForEvents = true;
-        if (DocumentSelected || ScrollbarSelected || ActiveProcesses.len) {
+        if (IsDocumentSelectionValid() || IsScrollbarSelectionValid()) {
             WaitForEvents = false;
         }
 

src/text_editor/todo.txt

@@ -1,6 +1,5 @@
 - delete raylib utils, delete WaitForExit?
 - remove pointers from ids since they will quickly get invalidated, move fully to array stuff
-- try waiting for events despite of running processes, I remember there was a problem with this in 4Coder, your PC would just start going ham
 - Attach BufferID to process, append to that buffer
 - kill all processes on exit https://devblogs.microsoft.com/oldnewthing/20131209-00/?p=2433
 - AppendToConsole should scroll only if caret is at end and one caret otherwise the carets should not change

src/text_editor/window_draw.cpp

@@ -270,7 +270,7 @@ void DrawWindow(Window *window, Event &event) {
         Scroller scroller = ComputeScrollerRect(window);
         Rect2    rect     = Shrink(scroller.rect, 2);
         Color    color    = ColorScrollbarScroller;
-        if (ScrollbarSelected == window) color = ColorScrollbarScrollerSelected;
+        if (ScrollbarSelected.id == window->id.id) color = ColorScrollbarScrollerSelected;
         DrawRect(rect, color);
     }