X-Git-Url: https://git.openstreetmap.org/rails.git/blobdiff_plain/35458c009652645972a9167d80aba1c4fdce82cf..653f7c0d74ba29a761865248728db7fd439a749e:/app/assets/javascripts/router.js

diff --git a/app/assets/javascripts/router.js b/app/assets/javascripts/router.js
index 654ec860b..cbd418895 100644
--- a/app/assets/javascripts/router.js
+++ b/app/assets/javascripts/router.js
@@ -1,4 +1,4 @@
-OSM.Router = function(rts) {
+OSM.Router = function(map, rts) {
   var escapeRegExp  = /[\-{}\[\]+?.,\\\^$|#\s]/g;
   var optionalParam = /\((.*?)\)/g;
   var namedParam    = /(\(\?)?:\w+/g;
@@ -28,7 +28,7 @@ OSM.Router = function(rts) {
         });
       }
 
-      (controller[action] || $.noop).apply(controller, params);
+      return (controller[action] || $.noop).apply(controller, params);
     };
 
     return route;
@@ -45,34 +45,89 @@ OSM.Router = function(rts) {
   };
 
   var currentPath = window.location.pathname + window.location.search,
-    currentRoute = routes.recognize(currentPath);
+    currentRoute = routes.recognize(currentPath),
+    currentHash = location.hash || OSM.formatHash(map);
 
-  currentRoute.run('load', currentPath);
+  var router, stateChange;
 
   if (window.history && window.history.pushState) {
-    $(window).on('popstate', function() {
+    $(window).on('popstate', function(e) {
+      if (!e.originalEvent.state) return; // Is it a real popstate event or just a hash change?
       var path = window.location.pathname + window.location.search;
       if (path === currentPath) return;
       currentRoute.run('unload');
       currentPath = path;
       currentRoute = routes.recognize(currentPath);
       currentRoute.run('popstate', currentPath);
+      var state = e.originalEvent.state;
+      if (state.center) {
+        map.setView(state.center, state.zoom, {animate: false});
+        map.updateLayers(state.layers);
+      }
     });
 
-    return function (url) {
+    router = function (url) {
       var path = url.replace(/#.*/, ''),
         route = routes.recognize(path);
       if (!route) return false;
-      window.history.pushState({}, document.title, url);
+      window.history.pushState(OSM.parseHash(url) || {}, document.title, url);
       currentRoute.run('unload');
       currentPath = path;
       currentRoute = route;
       currentRoute.run('pushstate', currentPath);
       return true;
-    }
+    };
+
+    router.stateChange = function(state) {
+      if (state.center) {
+        window.history.replaceState(state, document.title, OSM.formatHash(state));
+      } else {
+        window.history.replaceState(state, document.title, window.location);
+      }
+    };
   } else {
-    return function (url) {
+    router = function (url) {
       window.location.assign(url);
-    }
+    };
+
+    router.stateChange = function(state) {
+      if (state.center) window.location.replace(OSM.formatHash(state));
+    };
   }
+
+  router.updateHash = function() {
+    var hash = OSM.formatHash(map);
+    if (hash === currentHash) return;
+    currentHash = hash;
+    router.stateChange(OSM.parseHash(hash));
+  };
+
+  router.hashUpdated = function() {
+    var hash = location.hash;
+    if (hash === currentHash) return;
+    currentHash = hash;
+    var state = OSM.parseHash(hash);
+    if (!state) return;
+    map.setView(state.center, state.zoom);
+    map.updateLayers(state.layers);
+    router.stateChange(state, hash);
+  };
+
+  router.moveListenerOn = function() {
+    map.on('moveend', router.updateHash);
+  };
+
+  router.moveListenerOff = function() {
+    map.off('moveend', router.updateHash);
+  };
+
+  router.load = function() {
+    var loadState = currentRoute.run('load', currentPath);
+    router.stateChange(loadState || {});
+  };
+
+  map.on('moveend baselayerchange overlaylayerchange', router.updateHash);
+  $(window).on('hashchange', router.hashUpdated);
+
+  return router;
 };