Begins preview generation as soon as initial state is loaded. Doesn't wait for print destination to…

chrome/browser/resources/print_preview/data/print_ticket_store.js

 // Copyright (c) 2012 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';
 
   // TODO(rltoscano): Maybe clear print ticket when destination changes. Or
   // better yet, carry over any print ticket state that is possible. I.e. if
   // destination changes, the new destination might not support duplex anymore,
@@ skipping 254 matching lines @@
       if (this.appState_.hasField(
           print_preview.AppState.Field.IS_COLLATE_ENABLED)) {
         this.collate_.updateValue(this.appState_.getField(
             print_preview.AppState.Field.IS_COLLATE_ENABLED));
       }
       if (this.appState_.hasField(
           print_preview.AppState.Field.IS_CSS_BACKGROUND_ENABLED)) {
         this.cssBackground_.updateValue(this.appState_.getField(
             print_preview.AppState.Field.IS_CSS_BACKGROUND_ENABLED));
       }
+      this.isInitialized_ = true;
+      cr.dispatchSimpleEvent(this, PrintTicketStore.EventType.INITIALIZE);
     },
 
     /** @return {boolean} Whether the header-footer capability is available. */
     hasHeaderFooterCapability: function() {
       return this.headerFooter_.isCapabilityAvailable();
     },
 
     /** @return {boolean} Whether the header-footer setting is enabled. */
     isHeaderFooterEnabled: function() {
       return this.headerFooter_.getValue();
@@ skipping 227 matching lines @@
     },
 
     /**
      * Called when the capabilities of the selected destination are ready.
      * @private
      */
     onSelectedDestinationCapabilitiesReady_: function() {
       var caps = this.destinationStore_.selectedDestination.capabilities;
       var isFirstUpdate = this.capabilitiesHolder_.get() == null;
       this.capabilitiesHolder_.set(caps);
-      if (isFirstUpdate) {
-        this.isInitialized_ = true;
-        cr.dispatchSimpleEvent(this, PrintTicketStore.EventType.INITIALIZE);
-      } else {
+      if (!isFirstUpdate) {
         // Reset user selection for certain ticket items.
         this.customMargins_.updateValue(null);
         this.appState_.persistCustomMargins(null);
 
         if (this.marginsType_.getValue() ==
             print_preview.ticket_items.MarginsType.Value.CUSTOM) {
           this.marginsType_.updateValue(
               print_preview.ticket_items.MarginsType.Value.DEFAULT);
           this.appState_.persistMarginsType(
               print_preview.ticket_items.MarginsType.Value.DEFAULT);
@@ skipping 11 matching lines @@
     onDocumentInfoChange_: function() {
       cr.dispatchSimpleEvent(this, PrintTicketStore.EventType.DOCUMENT_CHANGE);
     }
   };
 
   // Export
   return {
     PrintTicketStore: PrintTicketStore
   };
 });