loadUrl enhancements (#134)

`loadUrl` enhancements

- Make `options` parameter optional
- Allow partial overriding of instance options when calling `loadUrl` directly
- Make `requestOptions` optional
- Document `loadUrl` usage and provide examples

lib/proto/attach-form.js

@@ -1,5 +1,5 @@
 var on = require("../events/on")
-var clone = require("../clone")
+var clone = require("../util/clone")
 
 var attrClick = "data-pjax-click-state"
 

lib/proto/attach-link.js

@@ -1,5 +1,5 @@
 var on = require("../events/on")
-var clone = require("../clone")
+var clone = require("../util/clone")
 
 var attrClick = "data-pjax-click-state"
 var attrKey = "data-pjax-keyup-state"
@@ -9,9 +9,6 @@ var linkAction = function(el, event) {
   // clone it so the changes don't persist
   var options = clone(this.options)
 
-  // Initialize requestOptions since loadUrl expects it to be an object
-  options.requestOptions = {}
-
   // Don’t break browser special behavior on links (like page in new window)
   if (event.which > 1 || event.metaKey || event.ctrlKey || event.shiftKey || event.altKey) {
     el.setAttribute(attrClick, "modifier")

lib/proto/parse-options.js

@@ -1,40 +0,0 @@
-/* global _gaq: true, ga: true */
-
-var defaultSwitches = require("../switches")
-
-module.exports = function(options) {
-  options = options || {}
-  options.elements = options.elements || "a[href], form[action]"
-  options.selectors = options.selectors || ["title", ".js-Pjax"]
-  options.switches = options.switches || {}
-  options.switchesOptions = options.switchesOptions || {}
-  options.history = options.history || true
-  options.analytics = (typeof options.analytics === "function" || options.analytics === false) ?
-    options.analytics :
-    function() {
-      if (window._gaq) {
-        _gaq.push(["_trackPageview"])
-      }
-      if (window.ga) {
-        ga("send", "pageview", {page: location.pathname, title: document.title})
-      }
-    }
-  options.scrollTo = (typeof options.scrollTo === "undefined") ? 0 : options.scrollTo
-  options.scrollRestoration = (typeof options.scrollRestoration !== "undefined") ? options.scrollRestoration : true
-  options.cacheBust = (typeof options.cacheBust === "undefined") ? true : options.cacheBust
-  options.debug = options.debug || false
-  options.timeout = options.timeout || 0
-  options.currentUrlFullReload = (typeof options.currentUrlFullReload === "undefined") ? false : options.currentUrlFullReload
-
-  // We can’t replace body.outerHTML or head.outerHTML.
-  // It creates a bug where a new body or head are created in the DOM.
-  // If you set head.outerHTML, a new body tag is appended, so the DOM has 2 body nodes, and vice versa
-  if (!options.switches.head) {
-    options.switches.head = defaultSwitches.switchElementsAlt
-  }
-  if (!options.switches.body) {
-    options.switches.body = defaultSwitches.switchElementsAlt
-  }
-
-  this.options = options
-}