From 7a8a7f30f2fc809bc3d2faa8c28bde9dec342098 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@helsinki.at>
Date: Sat, 14 Jan 2017 14:54:39 +0100
Subject: limit date range


diff --git a/www/js/todo.js b/www/js/todo.js
index 37eb292..23768b7 100644
--- a/www/js/todo.js
+++ b/www/js/todo.js
@@ -38,14 +38,19 @@ rh.ShowList = function(d) {
     this.current = d;
   }
   this.current_week = get_rd_week(this.current.valueOf());
+  this.request_sent = false;
 };
 
 rh.ShowList.prototype.fetch = function() {
   var self = this;
   this.current_week = get_rd_week(this.current.valueOf());
 
+  this.request_sent = true;
+  self.$this.trigger('update-hdr');
   $.getJSON( "/rh-bin/schedules.json?DAYS=1&START=" + format_date_iso(this.current), function(data) {
     if(data.status == "OK") {
+      history.replaceState(null, null, '/todo/' + format_date_iso(self.current));
+      self.last_succeeded = self.current;
       self.shows = [];
       $(data.shows).each(function(index, showdata) {
         var show = new rh.Show(showdata);
@@ -53,19 +58,30 @@ rh.ShowList.prototype.fetch = function() {
       });
       self.$this.trigger('update');
     }
+  }).fail(function() {
+    if((Object.prototype.toString.call(self.last_succeeded) === '[object Date]') &&
+       (self.last_succeeded.toString() !== 'Invalid Date')) {
+      self.current = self.last_succeeded;
+      self.current_week = get_rd_week(self.current.valueOf());
+      self.$this.trigger('update');
+    }
+  }).always(function() {
+    self.request_sent = false;
   });
 };
 
 rh.ShowList.prototype.prev = function() {
-  this.current = new Date(this.current.valueOf() - 24*3600*1000);
-  history.replaceState(null, null, '/todo/' + format_date_iso(this.current));
-  this.fetch();
+  if(!this.request_sent) {
+    this.current = new Date(this.current.valueOf() - 24*3600*1000);
+    this.fetch();
+  }
 };
 
 rh.ShowList.prototype.next = function() {
-  this.current = new Date(this.current.valueOf() + 24*3600*1000);
-  history.replaceState(null, null, '/todo/' + format_date_iso(this.current));
-  this.fetch();
+  if(!this.request_sent) {
+    this.current = new Date(this.current.valueOf() + 24*3600*1000);
+    this.fetch();
+  }
 };
 
 rh.Show = function(show) {
@@ -87,13 +103,16 @@ rh.ShowListView = function(model) {
   this.showViews = [];
 
   var self = this;
+  $(this.model).on('update-hdr', function() {
+    self.render_hdr();
+  });
   $(this.model).on('update', function() {
     self.render();
   });
   this.model.fetch();
 };
 
-rh.ShowListView.prototype.render = function() {
+rh.ShowListView.prototype.render_hdr = function() {
   var hdr = $('#header');
   $('span.date', hdr).text(format_date(this.model.current));
   var weekspan = $('span.week', hdr).removeClass().addClass('week').addClass('label');
@@ -117,7 +136,12 @@ rh.ShowListView.prototype.render = function() {
   var list = $('#shows');
   $('div.show', list).remove();
   this.showViews = [];
+};
 
+rh.ShowListView.prototype.render = function() {
+  this.render_hdr();
+
+  var list = $('#shows');
   for (var i = 0; i < this.model.shows.length; i++) {
     var showView = new rh.ShowView(this.model.shows[i], this);
     this.showViews.push(showView);
@@ -154,7 +178,7 @@ function todo_init() {
   var d = new Date();
   if(url.path.length > 1) {
     var tmp = new Date(url.path[1]);
-    if((Object.prototype.toString.call(tmp) === '[object Date]') || (tmp.toString() !== 'Invalid Date')) {
+    if((Object.prototype.toString.call(tmp) === '[object Date]') && (tmp.toString() !== 'Invalid Date')) {
       d = tmp;
     }
   }
-- 
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