First separation commit.

Added LICENSE, README.md, CONTRIBUTORS.md

src/scripts/autobackdrops.js

@@ -0,0 +1,53 @@
+define(["backdrop", "userSettings", "libraryMenu"], function(backdrop, userSettings, libraryMenu) {
+    "use strict";
+
+    function enabled() {
+        return userSettings.enableBackdrops()
+    }
+
+    function getBackdropItemIds(apiClient, userId, types, parentId) {
+        var key = "backdrops2_" + userId + (types || "") + (parentId || ""),
+            data = cache[key];
+        if (data) return console.log("Found backdrop id list in cache. Key: " + key), data = JSON.parse(data), Promise.resolve(data);
+        var options = {
+            SortBy: "IsFavoriteOrLiked,Random",
+            Limit: 20,
+            Recursive: !0,
+            IncludeItemTypes: types,
+            ImageTypes: "Backdrop",
+            ParentId: parentId,
+            EnableTotalRecordCount: !1
+        };
+        return apiClient.getItems(apiClient.getCurrentUserId(), options).then(function(result) {
+            var images = result.Items.map(function(i) {
+                return {
+                    Id: i.Id,
+                    tag: i.BackdropImageTags[0],
+                    ServerId: i.ServerId
+                }
+            });
+            return cache[key] = JSON.stringify(images), images
+        })
+    }
+
+    function showBackdrop(type, parentId) {
+        var apiClient = window.ApiClient;
+        apiClient && getBackdropItemIds(apiClient, apiClient.getCurrentUserId(), type, parentId).then(function(images) {
+            images.length ? backdrop.setBackdrops(images.map(function(i) {
+                return i.BackdropImageTags = [i.tag], i
+            })) : backdrop.clear()
+        })
+    }
+    var cache = {};
+    pageClassOn("pagebeforeshow", "page", function() {
+        var page = this;
+        if (!page.classList.contains("selfBackdropPage"))
+            if (page.classList.contains("backdropPage"))
+                if (enabled()) {
+                    var type = page.getAttribute("data-backdroptype"),
+                        parentId = page.classList.contains("globalBackdropPage") ? "" : libraryMenu.getTopParentId();
+                    showBackdrop(type, parentId)
+                } else page.classList.remove("backdropPage"), backdrop.clear();
+        else backdrop.clear()
+    })
+});