data/UpdateStore.js

   1 /*
   2  * Extends the Ext.data.Store type with  startUpdate() and stopUpdate() methods
   3  * to refresh the store data in the background.
   4  * Components using this store directly will flicker due to the redisplay of
   5  * the element ater 'config.interval' ms.
   6  *
   7  * Note that you have to set 'autoStart' or call startUpdate() once yourself
   8  * for the background load to begin.
   9  */
  10 Ext.define('Proxmox.data.UpdateStore', {
  11     extend: 'Ext.data.Store',
  12     alias: 'store.update',
  13
  14     config: {
  15         interval: 3000,
  16
  17         isStopped: true,
  18
  19         autoStart: false,
  20     },
  21
  22     destroy: function() {
  23         let me = this;
  24         me.stopUpdate();
  25         me.callParent();
  26     },
  27
  28     constructor: function(config) {
  29         let me = this;
  30
  31         config = config || {};
  32         if (config.interval === undefined) {
  33             delete config.interval;
  34         }
  35
  36         if (!config.storeid) {
  37             throw "no storeid specified";
  38         }
  39
  40         let load_task = new Ext.util.DelayedTask();
  41
  42         let run_load_task = function() {
  43             if (me.getIsStopped()) {
  44                 return;
  45             }
  46
  47             if (Proxmox.Utils.authOK()) {
  48                 let start = new Date();
  49                 me.load(function() {
  50                     let runtime = new Date() - start;
  51                     let interval = me.getInterval() + runtime*2;
  52                     load_task.delay(interval, run_load_task);
  53                 });
  54             } else {
  55                 load_task.delay(200, run_load_task);
  56             }
  57         };
  58
  59         Ext.apply(config, {
  60             startUpdate: function() {
  61                 me.setIsStopped(false);
  62                 // run_load_task(); this makes problems with chrome
  63                 load_task.delay(1, run_load_task);
  64             },
  65             stopUpdate: function() {
  66                 me.setIsStopped(true);
  67                 load_task.cancel();
  68             },
  69         });
  70
  71         me.callParent([config]);
  72
  73         me.load_task = load_task;
  74
  75         if (me.getAutoStart()) {
  76             me.startUpdate();
  77         }
  78     },
  79 });