fix($location): parse xlink:href for SVGAElements

Before this fix, the xlink:href property of an SVG <a> element could not be parsed
on click, as the property is an SVGAnimatedString rather than a DOMString.

This patch parses the xlink:href's animVal into a DOMString in order to prevent
an `Object #<SVGAnimatedString> has no method 'indexOf'` exception from being thrown,
and also to update the location if necessary as expected.

Closes #5472
Closes #5198
Closes #5199
Closes #4098
Closes #1420

1 files changed, 7 insertions, 0 deletions

diff --git a/src/ng/location.js b/src/ng/location.js
index 402db3cf..12f6c14c 100644
--- a/src/ng/location.js
+++ b/src/ng/location.js
@@ -629,6 +629,13 @@ function $LocationProvider(){
       }
 
       var absHref = elm.prop('href');
+
+      if (isObject(absHref) && absHref.toString() === '[object SVGAnimatedString]') {
+        // SVGAnimatedString.animVal should be identical to SVGAnimatedString.baseVal, unless during
+        // an animation.
+        absHref = urlResolve(absHref.animVal).href;
+      }
+
       var rewrittenUrl = $location.$$rewrite(absHref);
 
       if (absHref && !elm.attr('target') && rewrittenUrl && !event.isDefaultPrevented()) {