chrome/browser/resources/print_preview/data/ticket_items/vendor_items.js

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 cr.define('print_preview.ticket_items', function() {
   6   'use strict';
   7
   8   /**
   9    * An object that represents a user modifiable item in a print ticket. Each
  10    * ticket item has a value which can be set by the user. Ticket items can also
  11    * be unavailable for modifying if the print destination doesn't support it or
  12    * if other ticket item constraints are not met.
  13    * @param {print_preview.AppState} appState Application state model to update
  14    *     when ticket items update.
  15    * @param {print_preview.DestinationStore} destinationStore Used listen for
  16    *     changes in the currently selected destination's capabilities. Since
  17    *     this is a common dependency of ticket items, it's handled in the base
  18    *     class.
  19    * @constructor
  20    * @extends {cr.EventTarget}
  21    */
  22   function VendorItems(appState, destinationStore) {
  23     cr.EventTarget.call(this);
  24
  25     /**
  26      * Application state model to update when ticket items update.
  27      * @private {print_preview.AppState}
  28      */
  29     this.appState_ = appState || null;
  30
  31     /**
  32      * Used listen for changes in the currently selected destination's
  33      * capabilities.
  34      * @private {print_preview.DestinationStore}
  35      */
  36     this.destinationStore_ = destinationStore || null;
  37
  38     /**
  39      * Vendor ticket items store, maps item id to the item value.
  40      * @private {!Object<string>}
  41      */
  42     this.items_ = {};
  43   };
  44
  45   VendorItems.prototype = {
  46     __proto__: cr.EventTarget.prototype,
  47
  48     /** @return {boolean} Whether vendor capabilities are available. */
  49     isCapabilityAvailable: function() {
  50       return !!this.capability;
  51     },
  52
  53     /** @return {boolean} Whether the ticket item was modified by the user. */
  54     isUserEdited: function() {
  55       // If there's at least one ticket item stored in values, it was edited.
  56       for (var key in this.items_) {
  57         if (this.items_.hasOwnProperty(key))
  58           return true;
  59       }
  60       return false;
  61     },
  62
  63     /** @return {Object} Vendor capabilities of the selected destination. */
  64     get capability() {
  65       var destination = this.destinationStore_ ?
  66           this.destinationStore_.selectedDestination : null;
  67       if (!destination)
  68         return null;
  69       if (destination.id == print_preview.Destination.GooglePromotedId.FEDEX ||
  70           destination.type == print_preview.Destination.Type.MOBILE) {
  71         return null;
  72       }
  73       return (destination.capabilities &&
  74               destination.capabilities.printer &&
  75               destination.capabilities.printer.vendor_capability) ||
  76              null;
  77     },
  78
  79     /**
  80      * Vendor ticket items store, maps item id to the item value.
  81      * @return {!Object<string>}
  82      */
  83     get ticketItems() {
  84       return this.items_;
  85     },
  86
  87     /**
  88      * @param {!Object<string>} values Values to set as the values of vendor
  89      *     ticket items. Maps vendor item id to the value.
  90      */
  91     updateValue: function(values) {
  92       this.items_ = {};
  93       if (typeof values == 'object') {
  94         for (var key in values) {
  95           if (values.hasOwnProperty(key) && typeof values[key] == 'string') {
  96             // Let's empirically limit each value at 2K.
  97             this.items_[key] = values[key].substring(0, 2048);
  98           }
  99         }
 100       }
 101
 102       if (this.appState_) {
 103         this.appState_.persistField(
 104             print_preview.AppState.Field.VENDOR_OPTIONS, this.items_);
 105       }
 106     }
 107   };
 108
 109   // Export
 110   return {
 111     VendorItems: VendorItems
 112   };
 113 });