inital setup/cleaning for v3

lib/epubjs/spine.js

@@ -0,0 +1,91 @@
+EPUBJS.Spine = function(_package, _request){
+  this.items = _package.spine;
+  this.manifest = _package.manifest;
+  this.spineNodeIndex = _package.spineNodeIndex;
+  this.baseUrl = _package.baseUrl || '';
+  this.request = _request;
+  this.length = this.items.length;
+  this.epubcfi = new EPUBJS.EpubCFI();
+  this.spineItems = [];
+  this.spineByHref = {};
+  this.spineById = {};
+
+  this.items.forEach(function(item, index){
+    var cfiBase = this.epubcfi.generateChapterComponent(this.spineNodeIndex, item.index, item.idref);
+    var href, url;
+    var manifestItem = this.manifest[item.idref];
+    var spineItem;
+
+    if(manifestItem) {
+      href = manifestItem.href;
+      url = this.baseUrl + href;
+    }
+
+    spineItem = new EPUBJS.SpineItem(item, href, url, cfiBase);
+    this.spineItems.push(spineItem);
+
+    this.spineByHref[spineItem.href] = index;
+    this.spineById[spineItem.idref] = index;
+
+
+  }.bind(this));
+
+};
+
+// book.spine.get();
+// book.spine.get(1);
+// book.spine.get("chap1.html");
+// book.spine.get("#id1234");
+EPUBJS.Spine.prototype.get = function(target) {
+  var index = 1;
+
+  if(typeof target === "number" || isNaN(target) === false){
+    index = target-1;
+  } else if(target.indexOf("#") === 0) {
+    index = this.spineById[target.substring(1)];
+  } else {
+    index = this.spineByHref[target];
+  }
+
+  return this.spineItems[index];
+};
+
+
+EPUBJS.SpineItem = function(item, href, url, cfiBase){
+    this.idref = item.idref;
+    this.linear = item.linear;
+    this.properties = item.properties;
+    this.index = item.index;
+    this.href = href;
+    this.url = url;
+    this.cfiBase = cfiBase;
+};
+
+
+EPUBJS.SpineItem.prototype.load = function(_request){
+  var request = _request || this.request || EPUBJS.core.request;
+  var loading = new RSVP.defer();
+  var loaded = loading.promise;
+
+  if(this.contents) {
+    loading.resolve(this.contents);
+  } else {  
+    request(this.url, 'xml').then(function(xml){
+      this.contents = xml.documentElement;
+      loading.resolve(this.contents);
+    }.bind(this));
+  }
+  
+  return loaded;
+};
+
+EPUBJS.SpineItem.prototype.render = function(){
+  return this.load().then(function(contents){
+    var serializer = new XMLSerializer();
+    return serializer.serializeToString(contents);
+  });
+};
+
+EPUBJS.SpineItem.prototype.find = function(_query){
+
+};