Add message dialog asking to save on quit

src/text_editor/buffer.cpp

@@ -1460,16 +1460,21 @@ String GetUniqueBufferName(String working_dir, String prepend_name, String exten
 void InitBuffers() {
     Allocator sys_allocator = GetSystemAllocator();
     Scratch scratch;
-    Buffer   *null_buffer   = CreateBuffer(sys_allocator, GetUniqueBufferName(GetWorkingDir(scratch), "console"));
+    Buffer   *null_buffer = CreateBuffer(sys_allocator, GetUniqueBufferName(GetWorkingDir(scratch), "console"));
-    View     *null_view     = CreateView(null_buffer->id);
+    null_buffer->dont_warn_on_save = true;
+    View *null_view = CreateView(null_buffer->id);
     Assert(null_buffer->id == NullBufferID && null_view->id == NullViewID);
-    TraceBuffer             = CreateBuffer(sys_allocator, GetUniqueBufferName(WorkDir, "trace"));
+    TraceBuffer = CreateBuffer(sys_allocator, GetUniqueBufferName(WorkDir, "trace"));
-    TraceView               = CreateView(TraceBuffer->id);
+    TraceBuffer->dont_warn_on_save = true;
-    GCInfoBuffer            = CreateBuffer(sys_allocator, GetUniqueBufferName(WorkDir, "gc"));
+    TraceView = CreateView(TraceBuffer->id);
-    EventBuffer             = CreateBuffer(sys_allocator, GetUniqueBufferName(WorkDir, "events"));
+    GCInfoBuffer = CreateBuffer(sys_allocator, GetUniqueBufferName(WorkDir, "gc"));
-    ScratchBuffer           = BufferOpenFile(GetUniqueBufferName(WorkDir, "scratch"));
+    GCInfoBuffer->dont_warn_on_save = true;
-    EventBuffer->no_history = true;
     GCInfoBuffer->no_history = true;
+    EventBuffer = CreateBuffer(sys_allocator, GetUniqueBufferName(WorkDir, "events"));
+    EventBuffer->dont_warn_on_save = true;
+    EventBuffer->no_history = true;
+    ScratchBuffer = BufferOpenFile(GetUniqueBufferName(WorkDir, "scratch"));
+    ScratchBuffer->dont_warn_on_save = true;
 }
 
 Int ConvertUTF8ToUTF16UnixLine(String string, char16_t *buffer, Int buffer_cap) {

src/text_editor/buffer.h

@@ -34,11 +34,12 @@ struct Buffer {
     Array<HistoryEntry> redo_stack;
     int                 edit_phase;
     struct {
-        int no_history : 1;
+        unsigned no_history : 1;
-        int no_line_starts : 1;
+        unsigned no_line_starts : 1;
-        int dirty : 1;
+        unsigned dirty : 1;
-        int changed_on_disk : 1;
+        unsigned changed_on_disk : 1;
-        int garbage : 1;
+        unsigned garbage : 1;
+        unsigned dont_warn_on_save : 1;
     };
 };
 

src/text_editor/commands.cpp

@@ -175,6 +175,42 @@ void Appendf(View *view, const char *fmt, ...) {
     Append(view, string, true);
 }
 
+bool YesNoMessageBox(const char *title, const char *msg) {
+    SDL_MessageBoxButtonData buttons[] = {
+        { SDL_MESSAGEBOX_BUTTON_ESCAPEKEY_DEFAULT, 1, "No" },
+        { SDL_MESSAGEBOX_BUTTON_RETURNKEY_DEFAULT, 0, "Yes" },
+    };
+    SDL_MessageBoxData data = {};
+    data.flags = SDL_MESSAGEBOX_WARNING;
+    data.title = title;
+    data.message = msg;
+    data.numbuttons = 2;
+    data.buttons = buttons;
+    int resp;
+    bool status = SDL_ShowMessageBox(&data, &resp);
+    Assert(status);
+    bool result = resp == 0;
+    return result;
+}
+
+int SaveMessageBox(const char *title, const char *msg) {
+    SDL_MessageBoxButtonData buttons[] = {
+        { SDL_MESSAGEBOX_BUTTON_RETURNKEY_DEFAULT, 2, "Save" },
+        { 0, 1, "Don't save" },
+        { SDL_MESSAGEBOX_BUTTON_ESCAPEKEY_DEFAULT, 0, "Cancel" },
+    };
+    SDL_MessageBoxData data = {};
+    data.flags = SDL_MESSAGEBOX_WARNING;
+    data.title = title;
+    data.message = msg;
+    data.numbuttons = 3;
+    data.buttons = buttons;
+    int resp;
+    bool status = SDL_ShowMessageBox(&data, &resp);
+    Assert(status);
+    return resp;
+}
+
 void ReportErrorf(const char *fmt, ...) {
     Scratch scratch;
     STRING_FORMAT(scratch, fmt, string);
@@ -453,6 +489,8 @@ void ListFilesRecursive(Buffer *buffer, String dir) {
 
 View *ExecHidden(String buffer_name, String cmd, String working_dir) {
     View *view = OpenBufferView(buffer_name);
+    Buffer *buffer = GetBuffer(view->active_buffer);
+    buffer->dont_warn_on_save = true;
     Exec(view->id, true, cmd, working_dir);
     return view;
 }

src/text_editor/text_editor.cpp

@@ -408,6 +408,30 @@ void OnCommand(Event event) {
         String16 string16 = ToString16(scratch, event.text);
         Replace(active.view, string16);
     }
+
+    if (event.kind == EVENT_QUIT) {
+        Scratch scratch;
+        bool do_quit = true;
+        For (Buffers) {
+            if (it->garbage || it->dont_warn_on_save) {
+                continue;
+            }
+            if (it->dirty) {
+                String message = Format(scratch, "Do you really want to quit? Unsaved buffer: %S", it->name);
+                int save = SaveMessageBox("There are unsaved changes, do you really want to quit!", message.data);
+                if (save == 0) {
+                    break;
+                }
+                if (save == 2) {
+                    SaveBuffer(it);
+                }
+            }
+        }
+
+        if (do_quit) {
+            AppIsRunning = false;
+        }
+    }
 }
 
 void GarbageCollect() {
@@ -556,10 +580,6 @@ void MainLoop() {
         if (it.kind != 1) {
             if (!Testing) Serialize(&ser, &it);
         }
-        if (it.kind == EVENT_QUIT) {
-            AppIsRunning = false;
-            return;
-        }
 
         if (it.xwindow == 0 || it.ywindow == 0) {
             int xwindow, ywindow;

src/text_editor/window_command.cpp

@@ -2,6 +2,7 @@ void CommandWindowInit() {
     Window *window = CreateWind();
     CommandBarWindowID = window->id;
     Buffer *buffer = CreateBuffer(SysAllocator, "command_bar");
+    buffer->dont_warn_on_save = true;
     View *view = CreateView(buffer->id);
     window->active_view = view->id;
     window->draw_line_numbers = false;

src/text_editor/window_debug.cpp

@@ -1,20 +1,20 @@
 void DebugWindowInit() {
-    Window  *window           = CreateWind();
+    Window  *window = CreateWind();
-    DebugWindowID             = window->id;
+    DebugWindowID = window->id;
     window->draw_line_numbers = false;
-    window->draw_scrollbar    = false;
+    window->draw_scrollbar = false;
-    window->visible           = false;
+    window->visible = false;
-    window->z                 = 2;
+    window->z = 2;
-    window->layout            = false;
+    window->layout = false;
 
-    Buffer *buffer     = CreateBuffer(SysAllocator, GetUniqueBufferName(WorkDir, "debug"));
+    Buffer *buffer = CreateBuffer(SysAllocator, GetUniqueBufferName(WorkDir, "debug"));
-    DebugBufferID      = buffer->id;
+    DebugBufferID = buffer->id;
+    buffer->dont_warn_on_save = true;
     buffer->no_history = true;
 
     View *view          = CreateView(buffer->id);
     DebugViewID         = view->id;
     window->active_view = view->id;
-
     window->visible = false;
 }
 

src/text_editor/window_search.cpp

@@ -2,6 +2,7 @@ void SearchWindowInit() {
     Window *window = CreateWind();
     SearchBarWindowID = window->id;
     Buffer *buffer = CreateBuffer(SysAllocator, "search_bar");
+    buffer->dont_warn_on_save = true;
     SearchBufferID = buffer->id;
     View *view = CreateView(buffer->id);
     SearchViewID = view->id;

src/text_editor/window_status.cpp

@@ -2,6 +2,7 @@ void StatusWindowInit() {
     Window *window = CreateWind();
     StatusBarWindowID = window->id;
     Buffer *buffer = CreateBuffer(SysAllocator, "status_bar");
+    buffer->dont_warn_on_save = true;
     View *view = CreateView(buffer->id);
     window->active_view = view->id;
     window->font = &SecondaryFont;