some improvements in automatic svg replacement

1 files changed, 28 insertions, 22 deletions

diff --git a/core/js/js.js b/core/js/js.js
index ee841227695..770ce4ea695 100644
--- a/core/js/js.js
+++ b/core/js/js.js
@@ -180,8 +180,32 @@ if (!Array.prototype.indexOf){
  * check if the browser support svg images
  */
 function SVGSupport() {
-	return !!document.createElementNS && !!document.createElementNS('http://www.w3.org/2000/svg', "svg").createSVGRect;
+	return SVGSupport.checkMimeType.correct && !!document.createElementNS && !!document.createElementNS('http://www.w3.org/2000/svg', "svg").createSVGRect;
 }
+SVGSupport.checkMimeType=function(){
+	$.ajax({
+		url: OC.imagePath('core','breadcrumb.svg'),
+		success:function(data,text,xhr){
+			var headerParts=xhr.getAllResponseHeaders().split("\n");
+			var headers={};
+			$.each(headerParts,function(i,text){
+				if(text){
+					var parts=text.split(':',2);
+					var value=parts[1].trim();
+					if(value[0]=='"'){
+						value=value.substr(1,value.length-2);
+					}
+					headers[parts[0]]=value;
+				}
+			});
+			if(headers["Content-Type"]!='image/svg+xml'){
+				replaceSVG();
+				SVGSupport.checkMimeType.correct=false
+			}
+		}
+	});
+}
+SVGSupport.checkMimeType.correct=true;
 
 //replace all svg images with png for browser compatibility
 function replaceSVG(){
@@ -223,27 +247,9 @@ function object(o) {
 $(document).ready(function(){
 	if(!SVGSupport()){//replace all svg images with png images for browser that dont support svg
 		replaceSVG();
-	};
-	$.ajax({
-		url: OC.imagePath('core','breadcrumb.svg'),
-		success:function(data,text,xhr){
-			var headerParts=xhr.getAllResponseHeaders().split("\n");
-			var headers={};
-			$.each(headerParts,function(i,text){
-				if(text){
-					var parts=text.split(':',2);
-					var value=parts[1].trim();
-					if(value[0]=='"'){
-						value=value.substr(1,value.length-2);
-					}
-					headers[parts[0]]=value;
-				}
-			});
-			if(headers["Content-Type"]!='image/svg+xml'){
-				replaceSVG();
-			}
-		}
-	});
+	}else{
+		SVGSupport.checkMimeType();
+	}
 	$('form.searchbox').submit(function(event){
 		event.preventDefault();
 	})