From 3f047704c70a957596371fec554d3e1fb066a29d Mon Sep 17 00:00:00 2001
From: Richard Collins <richardcrichardc@gmail.com>
Date: Mon, 24 Feb 2014 11:44:52 +1300
Subject: [PATCH] fix($location): make legacy browsers behave like modern ones
 in html5Mode

Previously, LocationHashbangInHtml5Url, which is used when html5Mode is enabled
in browsers which do not support the history API (IE8/9), would behave very
inconsistently WRT relative URLs always being resolved relative to the app root
url.

This fix enables these legacy browsers to behave like history enabled browsers,
by processing href attributes in order to resolve urls correctly.

Closes #6162
Closes #6421
Closes #6899
Closes #6832
Closes #6834
---
 src/ng/location.js | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/src/ng/location.js b/src/ng/location.js
index a6c3952a9036..1ed352f1d62d 100644
--- a/src/ng/location.js
+++ b/src/ng/location.js
@@ -268,6 +268,16 @@ function LocationHashbangInHtml5Url(appBase, hashPrefix) {
       return appBaseNoFile;
     }
   };
+
+  this.$$compose = function() {
+    var search = toKeyValue(this.$$search),
+        hash = this.$$hash ? '#' + encodeUriSegment(this.$$hash) : '';
+
+    this.$$url = encodePath(this.$$path) + (search ? '?' + search : '') + hash;
+    // include hashPrefix in $$absUrl when $$url is empty so IE8 & 9 do not reload page because of removal of '#'
+    this.$$absUrl = appBase + hashPrefix + this.$$url;
+  };
+
 }
 
 
@@ -642,6 +652,38 @@ function $LocationProvider(){
         absHref = urlResolve(absHref.animVal).href;
       }
 
+      // Make relative links work in HTML5 mode for legacy browsers (or at least IE8 & 9)
+      // The href should be a regular url e.g. /link/somewhere or link/somewhere or ../somewhere or somewhere#anchor or http://example.com/somewhere
+      if (LocationMode === LocationHashbangInHtml5Url) {
+        // get the actual href attribute - see http://msdn.microsoft.com/en-us/library/ie/dd347148(v=vs.85).aspx
+        // TODO check browser is in standards mode
+        var href = elm[0].getAttribute('href');
+
+        if (href.indexOf('://' == -1)) {         // Ignore absolute URLs
+          if (href[0] == '/') {
+            // absolute path - replace old path
+            absHref = serverBase(absHref) + href;
+          } else if (href[0] == '#') {
+            // local anchor
+            absHref = serverBase(absHref) + $location.path() + href;
+          } else {
+            // relative path - join with current path
+            var stack = $location.path().split("/"),
+              parts = href.split("/");
+            stack.pop(); // remove top file
+            for (var i=0; i<parts.length; i++) {
+              if (parts[i] == ".")
+                continue;
+              else if (parts[i] == "..")
+                stack.pop();
+              else
+                stack.push(parts[i]);
+            }
+            absHref = serverBase(absHref) + stack.join("/");
+          }
+        }
+      }
+
       var rewrittenUrl = $location.$$rewrite(absHref);
 
       if (absHref && !elm.attr('target') && rewrittenUrl && !event.isDefaultPrevented()) {