lua: gui library (WIP)

res/layouts/inventory.xml

@@ -1,3 +1,10 @@
-<inventory color="#1F1F1FE0" size="400,0">
+<inventory color="#1F1F1FE0" size="0,400">
     <slots-grid rows="4" count="40" sharefunc="inventory_share_func"/>
+    <button id="btn" 
+            coord="8,300" 
+            size="140,30" 
+            z-index="1" 
+            onclick="document.btn.text = tostring(time.uptime())">
+            -----
+    </button>
 </inventory>

res/layouts/inventory.xml.lua

@@ -1,9 +1,12 @@
-function on_open(inv)
-    print("OPEN", inv)
+local Document = require("core:document")
+document = Document.new(DOC_NAME)
+
+function on_open(invid)
+    print("OPEN", invid)
 end
 
-function on_close(inv)
-    print("CLOSE", inv)
+function on_close(invid)
+    print("CLOSE", invid)
 end
 
 function inventory_share_func(invid, slotid)