Introduce concept of provisional destinations to print preview

chrome/browser/resources/print_preview/native_layer.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.exportPath('print_preview');
 
 /**
  * @typedef {{selectSaveAsPdfDestination: boolean,
  *            layoutSettings.portrait: boolean,
  *            pageRange: string,
@@ skipping 49 matching lines @@
         this.onPrivetCapabilitiesSet_.bind(this);
     global.onPrivetPrintFailed = this.onPrivetPrintFailed_.bind(this);
     global.onExtensionPrintersAdded =
         this.onExtensionPrintersAdded_.bind(this);
     global.onExtensionCapabilitiesSet =
         this.onExtensionCapabilitiesSet_.bind(this);
     global.onEnableManipulateSettingsForTest =
         this.onEnableManipulateSettingsForTest_.bind(this);
     global.printPresetOptionsFromDocument =
         this.onPrintPresetOptionsFromDocument_.bind(this);
+    global.onProvisionalDestinationResolved =
+        this.onProvisionalDestinationResolved_.bind(this);
+    global.failedToResolveProvisionalDestination =
+        this.failedToResolveProvisionalDestination_.bind(this);
   };
 
   /**
    * Event types dispatched from the Chromium native layer.
    * @enum {string}
    * @const
    */
   NativeLayer.EventType = {
     ACCESS_TOKEN_READY: 'print_preview.NativeLayer.ACCESS_TOKEN_READY',
     CAPABILITIES_SET: 'print_preview.NativeLayer.CAPABILITIES_SET',
@@ skipping 19 matching lines @@
     SETTINGS_INVALID: 'print_preview.NativeLayer.SETTINGS_INVALID',
     PRIVET_PRINTER_CHANGED: 'print_preview.NativeLayer.PRIVET_PRINTER_CHANGED',
     PRIVET_CAPABILITIES_SET:
         'print_preview.NativeLayer.PRIVET_CAPABILITIES_SET',
     PRIVET_PRINT_FAILED: 'print_preview.NativeLayer.PRIVET_PRINT_FAILED',
     EXTENSION_PRINTERS_ADDED:
         'print_preview.NativeLayer.EXTENSION_PRINTERS_ADDED',
     EXTENSION_CAPABILITIES_SET:
         'print_preview.NativeLayer.EXTENSION_CAPABILITIES_SET',
     PRINT_PRESET_OPTIONS: 'print_preview.NativeLayer.PRINT_PRESET_OPTIONS',
+    EXTENSION_USB_PRINTER_RESOLVED:
+        'print_preview.NativeLayer.EXTENSION_USB_PRINTER_RESOLVED'
   };
 
   /**
    * Constant values matching printing::DuplexMode enum.
    * @enum {number}
    */
   NativeLayer.DuplexMode = {
     SIMPLEX: 0,
     LONG_EDGE: 1,
     UNKNOWN_DUPLEX_MODE: -1
@@ skipping 88 matching lines @@
     /**
      * Requests the destination's printing capabilities. A CAPABILITIES_SET
      * event will be dispatched in response.
      * @param {string} destinationId ID of the destination.
      */
     startGetLocalDestinationCapabilities: function(destinationId) {
       chrome.send('getPrinterCapabilities', [destinationId]);
     },
 
     /**
+     * @param {string} provisionalDestinationId
+     * @param {string} extensionId
+     * @param {!number} usbId
+     */
+    grantUsbExtensionPermission:
+        function(provisionalDestinationId, extensionId, usbId) {
+      chrome.send('grantExtensionUsbPrinterAccess',
+                  [provisionalDestinationId, extensionId, usbId]);
+    },
+
+    /**
      * @param {!print_preview.Destination} destination Destination to print to.
      * @param {!print_preview.ticket_items.Color} color Color ticket item.
      * @return {number} Native layer color model.
      * @private
      */
     getNativeColorModel_: function(destination, color) {
       // For non-local printers native color model is ignored anyway.
       var option = destination.isLocal ? color.getSelectedOption() : null;
       var nativeColorModel = parseInt(option ? option.vendor_id : null, 10);
       if (isNaN(nativeColorModel)) {
@@ skipping 295 matching lines @@
      */
     onFailedToGetPrinterCapabilities_: function(destinationId) {
       var getCapsFailEvent = new Event(
           NativeLayer.EventType.GET_CAPABILITIES_FAIL);
       getCapsFailEvent.destinationId = destinationId;
       getCapsFailEvent.destinationOrigin =
           print_preview.Destination.Origin.LOCAL;
       this.dispatchEvent(getCapsFailEvent);
     },
 
+    failedToResolveProvisionalDestination_: function(provisionalDestinationId) {
+      var evt = new Event(
+          NativeLayer.EventType.EXTENSION_USB_PRINTER_RESOLVED);
+      evt.provisionalId = provisionalDestinationId;
+      evt.destination = null;
+      this.dispatchEvent(evt);
+    },
+
+    onProvisionalDestinationResolved_: function(provisionalDestinationId,
+                                                destinationInfo) {
+      var evt = new Event(
+          NativeLayer.EventType.EXTENSION_USB_PRINTER_RESOLVED);
+      evt.provisionalId = provisionalDestinationId;
+      evt.destination = destinationInfo;
+      this.dispatchEvent(evt);
+    },
+
     /**
      * Called when native layer gets settings information for a requested privet
      * destination.
      * @param {string} destinationId Printer affected by error.
      * @private
      */
     onFailedToGetPrivetPrinterCapabilities_: function(destinationId) {
       var getCapsFailEvent = new Event(
           NativeLayer.EventType.GET_CAPABILITIES_FAIL);
       getCapsFailEvent.destinationId = destinationId;
@@ skipping 491 matching lines @@
       return this.serializedAppStateStr_;
     }
   };
 
   // Export
   return {
     NativeInitialSettings: NativeInitialSettings,
     NativeLayer: NativeLayer
   };
 });