support for defaultPattern

Author: dmolsen

src/js/styleguide.js

@@ -502,17 +502,17 @@
     updateViewportWidth(vpWidth);
   }
 
-  // load the iframe source
-  var patternName = "all";
-  var patternPath = "";
-  var iFramePath  = window.location.protocol+"//"+window.location.host+window.location.pathname.replace("index.html","")+"styleguide/html/styleguide.html?"+Date.now();
+  // set up the defaults for the
+  var baseIframePath = window.location.protocol+"//"+window.location.host+window.location.pathname.replace("index.html","");
+  var patternName    = ((config.defaultPattern !== undefined) && (typeof config.defaultPattern === 'string') && (config.defaultPattern.trim().length > 0)) ? config.defaultPattern : 'all';
+  var iFramePath     = baseIframePath+"styleguide/html/styleguide.html?"+Date.now();
   if ((oGetVars.p !== undefined) || (oGetVars.pattern !== undefined)) {
     patternName = (oGetVars.p !== undefined) ? oGetVars.p : oGetVars.pattern;
-    patternPath = urlHandler.getFileName(patternName);
-    iFramePath  = (patternPath !== "") ? window.location.protocol+"//"+window.location.host+window.location.pathname.replace("index.html","")+patternPath+"?"+Date.now() : iFramePath;
   }
 
   if (patternName !== "all") {
+    patternPath = urlHandler.getFileName(patternName);
+    iFramePath  = (patternPath !== "") ? baseIframePath+patternPath+"?"+Date.now() : iFramePath;
     document.getElementById("title").innerHTML = "Pattern Lab - "+patternName;
     history.replaceState({ "pattern": patternName }, null, null);
   }