From 193222ec5040e7e50603c902ce5dacf731869854 Mon Sep 17 00:00:00 2001
From: Michael Jackson <mjijackson@gmail.com>
Date: Fri, 13 Feb 2015 14:45:56 -0800
Subject: [PATCH] [added] StaticLocation, for server-side rendering

---
 modules/createRouter.js             | 30 ++++++++---------------------
 modules/index.js                    |  1 +
 modules/locations/StaticLocation.js | 23 ++++++++++++++++++++++
 3 files changed, 32 insertions(+), 22 deletions(-)
 create mode 100644 modules/locations/StaticLocation.js

diff --git a/modules/createRouter.js b/modules/createRouter.js
index 92778773d9..7034d3cbf7 100644
--- a/modules/createRouter.js
+++ b/modules/createRouter.js
@@ -8,6 +8,7 @@ var ImitateBrowserBehavior = require('./behaviors/ImitateBrowserBehavior');
 var HashLocation = require('./locations/HashLocation');
 var HistoryLocation = require('./locations/HistoryLocation');
 var RefreshLocation = require('./locations/RefreshLocation');
+var StaticLocation = require('./locations/StaticLocation');
 var NavigationContext = require('./NavigationContext');
 var StateContext = require('./StateContext');
 var Scrolling = require('./Scrolling');
@@ -139,6 +140,8 @@ function createRouter(options) {
       'You should not use a static location in a DOM environment because ' +
       'the router will not be kept in sync with the current URL'
     );
+
+    location = new StaticLocation(location);
   } else {
     invariant(
       canUseDOM || location.needsDOM === false,
@@ -240,11 +243,6 @@ function createRouter(options) {
        * a new URL onto the history stack.
        */
       transitionTo: function (to, params, query) {
-        invariant(
-          typeof location !== 'string',
-          'You cannot use transitionTo with a static location'
-        );
-
         var path = this.makePath(to, params, query);
 
         if (pendingTransition) {
@@ -260,11 +258,6 @@ function createRouter(options) {
        * the current URL in the history stack.
        */
       replaceWith: function (to, params, query) {
-        invariant(
-          typeof location !== 'string',
-          'You cannot use replaceWith with a static location'
-        );
-
         location.replace(this.makePath(to, params, query));
       },
 
@@ -280,11 +273,6 @@ function createRouter(options) {
        * because we cannot reliably track history length.
        */
       goBack: function () {
-        invariant(
-          typeof location !== 'string',
-          'You cannot use goBack with a static location'
-        );
-
         if (History.length > 1 || location === RefreshLocation) {
           location.pop();
           return true;
@@ -296,7 +284,7 @@ function createRouter(options) {
       },
 
       handleAbort: options.onAbort || function (abortReason) {
-        if (typeof location === 'string')
+        if (location instanceof StaticLocation)
           throw new Error('Unhandled aborted transition! Reason: ' + abortReason);
 
         if (abortReason instanceof Cancellation) {
@@ -431,17 +419,15 @@ function createRouter(options) {
           }
         };
 
-        if (typeof location === 'string') {
-          Router.dispatch(location, null);
-        } else {
+        if (!(location instanceof StaticLocation)) {
           if (location.addChangeListener)
             location.addChangeListener(Router.handleLocationChange);
 
           this.isRunning = true;
-
-          // Bootstrap using the current path.
-          this.refresh();
         }
+
+        // Bootstrap using the current path.
+        this.refresh();
       },
 
       refresh: function () {
diff --git a/modules/index.js b/modules/index.js
index f4acb203a3..145be66a99 100644
--- a/modules/index.js
+++ b/modules/index.js
@@ -8,6 +8,7 @@ exports.RouteHandler = require('./components/RouteHandler');
 exports.HashLocation = require('./locations/HashLocation');
 exports.HistoryLocation = require('./locations/HistoryLocation');
 exports.RefreshLocation = require('./locations/RefreshLocation');
+exports.StaticLocation = require('./locations/StaticLocation');
 
 exports.ImitateBrowserBehavior = require('./behaviors/ImitateBrowserBehavior');
 exports.ScrollToTopBehavior = require('./behaviors/ScrollToTopBehavior');
diff --git a/modules/locations/StaticLocation.js b/modules/locations/StaticLocation.js
new file mode 100644
index 0000000000..1f4f4e1c97
--- /dev/null
+++ b/modules/locations/StaticLocation.js
@@ -0,0 +1,23 @@
+var invariant = require('react/lib/invariant');
+
+function throwCannotModify() {
+  invariant(false, 'You cannot modify a static location');
+}
+
+function StaticLocation(path) {
+  this.path = path;
+}
+
+StaticLocation.prototype.push = throwCannotModify;
+StaticLocation.prototype.replace = throwCannotModify;
+StaticLocation.prototype.pop = throwCannotModify;
+
+StaticLocation.prototype.getCurrentPath = function () {
+  return this.path;
+};
+
+StaticLocation.prototype.toString = function () {
+  return '<StaticLocation path="' + this.path + '">';
+};
+
+module.exports = StaticLocation;