Code cleanup part #1: move all the services and directive JS code in the app.js file into its own files

static/js/services/angular-poll-channel.js

@@ -0,0 +1,72 @@
+/**
+ * Specialized class for conducting an HTTP poll, while properly preventing multiple calls.
+ */
+angular.module('quay').factory('AngularPollChannel', ['ApiService', '$timeout', function(ApiService, $timeout) {
+  var _PollChannel = function(scope, requester, opt_sleeptime) {
+    this.scope_ = scope;
+    this.requester_ = requester;
+    this.sleeptime_ = opt_sleeptime || (60 * 1000 /* 60s */);
+    this.timer_ = null;
+
+    this.working = false;
+    this.polling = false;
+
+    var that = this;
+    scope.$on('$destroy', function() {
+      that.stop();
+    });
+  };
+
+  _PollChannel.prototype.stop = function() {
+    if (this.timer_) {
+      $timeout.cancel(this.timer_);
+      this.timer_ = null;
+      this.polling_ = false;
+    }
+
+    this.working = false;
+  };
+
+  _PollChannel.prototype.start = function() {
+    // Make sure we invoke call outside the normal digest cycle, since
+    // we'll call $scope.$apply ourselves.
+    var that = this;
+    setTimeout(function() { that.call_(); }, 0);
+  };
+
+  _PollChannel.prototype.call_ = function() {
+    if (this.working) { return; }
+
+    var that = this;
+    this.working = true;
+    this.scope_.$apply(function() {
+      that.requester_(function(status) {
+        if (status) {
+          that.working = false;
+          that.setupTimer_();
+        } else {
+          that.stop();
+        }
+      });
+    });
+  };
+
+  _PollChannel.prototype.setupTimer_ = function() {
+    if (this.timer_) { return; }
+
+    var that = this;
+    this.polling = true;
+    this.timer_ = $timeout(function() {
+      that.timer_ = null;
+      that.call_();
+    }, this.sleeptime_)
+  };
+
+  var service = {
+    'create': function(scope, requester, opt_sleeptime) {
+      return new _PollChannel(scope, requester, opt_sleeptime);
+    }
+  };
+
+  return service;
+}]);