Print Preview: Refactoring layout mode related logic to LayoutSettings class.

chrome/browser/resources/print_preview/copies_settings.js

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 cr.define('print_preview', function() {
   'use strict';
 
   /**
    * Creates a CopiesSettings object.
    * @constructor
    */
   function CopiesSettings() {
+    this.copiesOption_ = $('copies-option');
     this.textfield_ = $('copies');
     this.incrementButton_ = $('increment');
     this.decrementButton_ = $('decrement');
     // Minimum allowed value for number of copies.
     this.minValue_ = 1;
     // Maximum allowed value for number of copies.
     this.maxValue_ = 999;
     this.collateOption_ = $('collate-option');
+    this.collateCheckbox_ = $('collate');
     this.hint_ = $('copies-hint');
     this.twoSidedCheckbox_ = $('two-sided');
   }
 
   cr.addSingletonGetter(CopiesSettings);
 
   CopiesSettings.prototype = {
     /**
      * The number of copies represented by the contents of |this.textfield_|.
      * If the text is not valid returns |this.minValue_|.
@@ skipping 16 matching lines @@
 
     /**
      * Getter method for |twoSidedCheckbox_|.
      * @type {HTMLInputElement}
      */
     get twoSidedCheckbox() {
       return this.twoSidedCheckbox_;
     },
 
     /**
+     * Gets the duplex mode for printing.
+     * @return {number} duplex mode.
+     */
+     get duplexMode() {
+      // Constant values matches printing::DuplexMode enum. Not using const
+      // keyword because it is not allowed by JS strict mode.
+      var SIMPLEX = 0;
+      var LONG_EDGE = 1;
+      return !this.twoSidedCheckbox_.checked ? SIMPLEX : LONG_EDGE;
+    },
+
+    /**
      * @return {boolean} true if |this.textfield_| is empty, or represents a
      *     positive integer value.
      */
     isValid: function() {
       return !this.textfield_.value || isPositiveInteger(this.textfield_.value);
     },
 
     /**
+     * Checks whether the preview collate setting value is set or not.
+     * @return {boolean} true if collate option is enabled and checked.
+     */
+    isCollated: function() {
+      return !this.collateOption_.hidden && this.collateCheckbox_.checked;
+    },
+
+    /**
      * Resets |this.textfield_| to |this.minValue_|.
      * @private
      */
     reset_: function() {
       this.textfield_.value = this.minValue_;
     },
 
     /**
      * Listener function to execute whenever the increment/decrement buttons are
      * clicked.
@@ skipping 38 matching lines @@
     addEventListeners: function() {
       this.textfield_.oninput = this.onTextfieldChanged_.bind(this);
       this.incrementButton_.onclick = this.onIncrementButtonClicked_.bind(this);
       this.decrementButton_.onclick = this.onDecrementButtonClicked_.bind(this);
       this.twoSidedCheckbox_.onclick = function() {
         if (!hasPendingPreviewRequest)
           updatePrintSummary();
       }
       document.addEventListener('PDFLoaded',
                                 this.updateButtonsState_.bind(this));
+      document.addEventListener('printerCapabilitiesUpdated',
+                                this.onPrinterCapabilitiesUpdated_.bind(this));
     },
 
     /**
+     * Listener triggered when a printerCapabilitiesUpdated event occurs.
+     * @private
+     */
+    onPrinterCapabilitiesUpdated_: function(e) {
+      if (e.printerCapabilities.disableCopiesOption) {
+        fadeOutElement(this.copiesOption_);
+        $('hr-before-copies').classList.remove('invisible');
+      } else {
+        fadeInElement(this.copiesOption_);
+        $('hr-before-copies').classList.add('invisible');
+      }
+      this.twoSidedCheckbox_.checked = e.printerCapabilities.setDuplexAsDefault;
+    },
+
+    /**
      * Listener triggered when |incrementButton_| is clicked.
      * @private
      */
     onIncrementButtonClicked_: function() {
       this.onButtonClicked_(1);
     },
 
     /**
      * Listener triggered when |decrementButton_| is clicked.
      * @private
@@ skipping 27 matching lines @@
         this.decrementButton_.disabled = this.numberOfCopies == this.minValue_;
         fadeOutElement(this.hint_);
       }
     }
   };
 
   return {
     CopiesSettings: CopiesSettings,
   };
 });