samples/pop_pop_win: now based on StageXL

samples/pop_pop_win/web/platform_web.dart

 library ppw_platform_web;
 
 import 'dart:async';
 import 'dart:html';
 import 'package:pop_pop_win/platform_target.dart';
 
 class PlatformWeb extends PlatformTarget {
-  static const String _BIG_HASH = '#big';
   static const String _ABOUT_HASH = '#about';
+  bool _sizeAccessed = false;
 
   final StreamController _aboutController = new StreamController(sync: true);
 
-  PlatformWeb(): super.base() {
+  PlatformWeb() : super.base() {
     window.onPopState.listen((args) => _processUrlHash());
   }
 
   @override
   Future clearValues() {
     window.localStorage.clear();
     return new Future.value();
   }
 
   @override
   Future setValue(String key, String value) {
     window.localStorage[key] = value;
     return new Future.value();
   }
 
   @override
   Future<String> getValue(String key) =>
       new Future.value(window.localStorage[key]);
 
-  bool get renderBig => _urlHash == _BIG_HASH;
+  int get size {
+    _sizeAccessed = true;
+    var hash = (_urlHash == null) ? '7' : _urlHash;
+    hash = hash.replaceAll('#', '');
+    return int.parse(hash, onError: (e) => 7);
+  }
 
   bool get showAbout => _urlHash == _ABOUT_HASH;
 
   Stream get aboutChanged => _aboutController.stream;
 
   void toggleAbout([bool value]) {
     var loc = window.location;
     // ensure we treat empty hash like '#', which makes comparison easy later
     var hash = loc.hash.length == 0 ? '#' : loc.hash;
 
@@ skipping 10 matching lines @@
     _aboutController.add(null);
   }
 
   String get _urlHash => window.location.hash;
 
   void _processUrlHash() {
     var loc = window.location;
     var hash = loc.hash;
     var href = loc.href;
 
-    final History history = window.history;
     switch (hash) {
       case "#reset":
         assert(href.endsWith(hash));
         var newLoc = href.substring(0, href.length - hash.length);
 
         window.localStorage.clear();
 
         loc.replace(newLoc);
         break;
-      case _BIG_HASH:
-        if (!renderBig) loc.reload();
-        break;
       case _ABOUT_HASH:
         _aboutController.add(null);
         break;
+      default:
+        if (hash.isNotEmpty && _sizeAccessed) {
+          loc.reload();
+        }
+        break;
     }
   }
 }