From dac924c707110e59c0e6d972ec69e1e11f7c55b9 Mon Sep 17 00:00:00 2001
From: Alec Murphy <alec@checksum.fail>
Date: Thu, 25 Sep 2025 08:24:27 -0400
Subject: [PATCH] System/Libraries/Widget: Initial support for ListViewWidget

---
 System/Core/Compositor.HC  | 10 +++++++
 System/Libraries/Widget.HC | 56 ++++++++++++++++++++++++++++++--------
 2 files changed, 55 insertions(+), 11 deletions(-)

diff --git a/System/Core/Compositor.HC b/System/Core/Compositor.HC
index b3d1ec0..981884f 100644
--- a/System/Core/Compositor.HC
+++ b/System/Core/Compositor.HC
@@ -786,6 +786,16 @@ U0 @compositor_handle_window_input_events(Window* win)
                 }
             }
         }
+        if (win->focused_widget->type == WIDGET_TYPE_LISTVIEW) {
+            if (@widget_listview_handle_key(win->focused_widget)) {
+                msg = CAlloc(sizeof(IpcMessage));
+                System.Log(Fs, "Sent message → WinKeyPress");
+                msg->client = win->client;
+                msg->type = CPZ_MSG_WIN_KEY_PRESS;
+                msg->payload = win;
+                Ipc.MsgSend(msg->client, msg);
+            }
+        }
     }
 
     if (Mouse.z != Compositor.mouse.delta_z) {
diff --git a/System/Libraries/Widget.HC b/System/Libraries/Widget.HC
index f63f009..931aa4d 100644
--- a/System/Libraries/Widget.HC
+++ b/System/Libraries/Widget.HC
@@ -232,18 +232,12 @@ class VerticalScrollBarWidget : Widget {
     I64 value;
 };
 
-class @list_view_item
-{
-    @list_view_item* prev;
-    @list_view_item* next;
-    Context2D* icon;
-    U8 text[1024];
-};
-
 class ListViewWidget : Widget {
     BitmapFont* font;
     U32 color;
-    @list_view_item* items;
+    I64 index;
+    JsonArray* columns;
+    JsonArray* items;
 };
 
 class TabPanelTab {
@@ -650,6 +644,42 @@ Bool @widget_input_handle_key(BitmapFontTextInputWidget* widget)
     return FALSE;
 }
 
+U0 @widget_listview_select_row(ListViewWidget* widget)
+{
+    if (widget->index > -1 && widget->items && widget->items->length && widget->index < widget->items->length) {
+        widget->items->o(widget->index)->set("selected", 1);
+    }
+}
+
+Bool @widget_listview_handle_key(ListViewWidget* widget)
+{
+    I64 key = Keyboard.active_key;
+    I64 tS = Keyboard.active_key_tS;
+    I64 i;
+    if (key && tS != Keyboard.last_key_tS) {
+        if (!KeyDown(SC_SHIFT)) {
+            // Clear selection
+            for (i = 0; i < widget->items->length; i++) {
+                widget->items->o(i)->set("selected", 0);
+            }
+        }
+        switch (key) {
+        case SC_CURSOR_UP:
+            widget->index = Max(0, widget->index - 1);
+            @widget_listview_select_row(widget);
+            break;
+        case SC_CURSOR_DOWN:
+            widget->index = Min(widget->items->length - 1, widget->index + 1);
+            @widget_listview_select_row(widget);
+            break;
+        default:
+            break;
+        }
+        return TRUE;
+    }
+    return FALSE;
+}
+
 Widget* @widget_create_widget(Window* win, I64 type, I64 x, I64 y, I64 width,
     I64 height)
 {
@@ -750,7 +780,9 @@ Widget* @widget_create_widget(Window* win, I64 type, I64 x, I64 y, I64 width,
         break;
     case WIDGET_TYPE_LISTVIEW:
         widget(ListViewWidget*)->color = Color(0, 0, 0);
-        widget(ListViewWidget*)->items = CAlloc(sizeof(@list_view_item));
+        widget(ListViewWidget*)->columns = Json.CreateArray(Fs);
+        widget(ListViewWidget*)->items = Json.CreateArray(Fs);
+        widget(ListViewWidget*)->index = -1;
         break;
     }
 
@@ -874,7 +906,9 @@ U0 @widget_init_widget(Widget* widget, Window* win, I64 type, I64 x, I64 y,
         break;
     case WIDGET_TYPE_LISTVIEW:
         widget(ListViewWidget*)->color = Color(0, 0, 0);
-        widget(ListViewWidget*)->items = CAlloc(sizeof(@list_view_item));
+        widget(ListViewWidget*)->columns = Json.CreateArray(Fs);
+        widget(ListViewWidget*)->items = Json.CreateArray(Fs);
+        widget(ListViewWidget*)->index = -1;
         break;
     }