Support NumCopies print preset

Chrome side javascript changes to support NumCopies print preset
option. Copies in print preview dialog should be set to value set for
NumCopies in pdf source document.

BUG=169120

Review URL: https://codereview.chromium.org/407733002

Cr-Commit-Position: refs/heads/master@{#307454}

chrome/browser/resources/print_preview/native_layer.js

@@ -51,8 +51,6 @@ cr.define('print_preview', function() {
         this.onDidGetPreviewPageCount_.bind(this);
     global.onDidPreviewPage = this.onDidPreviewPage_.bind(this);
     global.updatePrintPreview = this.onUpdatePrintPreview_.bind(this);
-    global.printScalingDisabledForSourcePDF =
-        this.onPrintScalingDisabledForSourcePDF_.bind(this);
     global.onDidGetAccessToken = this.onDidGetAccessToken_.bind(this);
     global.autoCancelForTesting = this.autoCancelForTesting_.bind(this);
     global.onPrivetPrinterChanged = this.onPrivetPrinterChanged_.bind(this);
@@ -61,6 +59,8 @@ cr.define('print_preview', function() {
     global.onPrivetPrintFailed = this.onPrivetPrintFailed_.bind(this);
     global.onEnableManipulateSettingsForTest =
         this.onEnableManipulateSettingsForTest_.bind(this);
+    global.printPresetOptionsFromDocument =
+        this.onPrintPresetOptionsFromDocument_.bind(this);
   };
 
   /**
@@ -95,6 +95,7 @@ cr.define('print_preview', function() {
     PRIVET_CAPABILITIES_SET:
         'print_preview.NativeLayer.PRIVET_CAPABILITIES_SET',
     PRIVET_PRINT_FAILED: 'print_preview.NativeLayer.PRIVET_PRINT_FAILED',
+    PRINT_PRESET_OPTIONS: 'print_preview.NativeLayer.PRINT_PRESET_OPTIONS',
   };
 
   /**
@@ -652,15 +653,17 @@ cr.define('print_preview', function() {
     },
 
     /**
-     * Updates the fit to page option state based on the print scaling option of
-     * source pdf. PDF's have an option to enable/disable print scaling. When we
-     * find out that the print scaling option is disabled for the source pdf, we
-     * uncheck the fitToPage_ to page checkbox. This function is called from C++
-     * code.
+     * Updates print preset options from source PDF document.
+     * Called from PrintPreviewUI::OnSetOptionsFromDocument().
+     * @param {{disableScaling: boolean, copies: number}} options Specifies
+     *     printing options according to source document presets.
      * @private
      */
-    onPrintScalingDisabledForSourcePDF_: function() {
-      cr.dispatchSimpleEvent(this, NativeLayer.EventType.DISABLE_SCALING);
+    onPrintPresetOptionsFromDocument_: function(options) {
+      var printPresetOptionsEvent = new Event(
+          NativeLayer.EventType.PRINT_PRESET_OPTIONS);
+      printPresetOptionsEvent.optionsFromDocument = options;
+      this.dispatchEvent(printPresetOptionsEvent);
     },
 
     /**

chrome/browser/resources/print_preview/print_preview.js

@@ -347,8 +347,8 @@ cr.define('print_preview', function() {
           this.onSettingsInvalid_.bind(this));
       this.tracker.add(
           this.nativeLayer_,
-          print_preview.NativeLayer.EventType.DISABLE_SCALING,
-          this.onDisableScaling_.bind(this));
+          print_preview.NativeLayer.EventType.PRINT_PRESET_OPTIONS,
+          this.onPrintPresetOptionsFromDocument_.bind(this));
       this.tracker.add(
           this.nativeLayer_,
           print_preview.NativeLayer.EventType.PRIVET_PRINT_FAILED,
@@ -979,13 +979,21 @@ cr.define('print_preview', function() {
     },
 
     /**
-     * Called when the native layer dispatches a DISABLE_SCALING event. Resets
-     * fit-to-page selection and updates document info.
+     * Updates printing options according to source document presets.
+     * @param {Event} event Contains options from source document.
      * @private
      */
-    onDisableScaling_: function() {
-      this.printTicketStore_.fitToPage.updateValue(null);
-      this.documentInfo_.updateIsScalingDisabled(true);
+    onPrintPresetOptionsFromDocument_: function(event) {
+      if (event.optionsFromDocument.disableScaling) {
+        this.printTicketStore_.fitToPage.updateValue(null);
+        this.documentInfo_.updateIsScalingDisabled(true);
+      }
+
+      if (event.optionsFromDocument.copies > 0 &&
+          this.printTicketStore_.copies.isCapabilityAvailable()) {
+        this.printTicketStore_.copies.updateValue(
+            event.optionsFromDocument.copies);
+      }
     },
 
     /**

chrome/browser/ui/webui/print_preview/print_preview_ui.cc

@@ -628,9 +628,11 @@ void PrintPreviewUI::OnReloadPrintersList() {
 
 void PrintPreviewUI::OnSetOptionsFromDocument(
     const PrintHostMsg_SetOptionsFromDocument_Params& params) {
-  // Notify WebUI that print scaling is disabled
-  if (params.is_scaling_disabled)
-    web_ui()->CallJavascriptFunction("printScalingDisabledForSourcePDF");
+  base::DictionaryValue options;
+  options.SetBoolean(printing::kSettingDisableScaling,
+                     params.is_scaling_disabled);
+  options.SetInteger(printing::kSettingCopies, params.copies);
+  web_ui()->CallJavascriptFunction("printPresetOptionsFromDocument", options);
 }
 
 // static

chrome/test/data/webui/print_preview.js

@@ -474,8 +474,10 @@ TEST_F('PrintPreviewWebUITest', 'PrintScalingDisabledForPlugin', function() {
   this.setCapabilities(getCddTemplate("FooDevice"));
 
   // Indicate that the PDF does not support scaling by default.
-  cr.dispatchSimpleEvent(
-      this.nativeLayer_, print_preview.NativeLayer.EventType.DISABLE_SCALING);
+  var printPresetOptionsEvent = new Event(
+      print_preview.NativeLayer.EventType.PRINT_PRESET_OPTIONS);
+  printPresetOptionsEvent.optionsFromDocument = {disableScaling: true};
+  this.nativeLayer_.dispatchEvent(printPresetOptionsEvent);
 
   var otherOptions = $('other-options-settings');
   checkSectionVisible(otherOptions, true);
@@ -487,6 +489,32 @@ TEST_F('PrintPreviewWebUITest', 'PrintScalingDisabledForPlugin', function() {
   this.waitForAnimationToEnd('other-options-collapsible');
 });
 
+// When the number of copies print preset is set for source 'PDF', we update
+// copies value if capability is supported by printer.
+TEST_F('PrintPreviewWebUITest', 'CheckNumCopiesPrintPreset', function() {
+  this.initialSettings_.isDocumentModifiable_ = false;
+  this.setInitialSettings();
+  this.setLocalDestinations();
+  this.setCapabilities(getCddTemplate("FooDevice"));
+
+  // Indicate that the number of copies print preset is set for source PDF.
+  var printPresetOptions = {
+    disableScaling: true,
+    copies: 2
+  };
+  var printPresetOptionsEvent = new Event(
+      print_preview.NativeLayer.EventType.PRINT_PRESET_OPTIONS);
+  printPresetOptionsEvent.optionsFromDocument = printPresetOptions;
+  this.nativeLayer_.dispatchEvent(printPresetOptionsEvent);
+
+  checkSectionVisible($('copies-settings'), true);
+  expectEquals(
+      printPresetOptions.copies,
+      parseInt($('copies-settings').querySelector('.copies').value));
+
+  this.waitForAnimationToEnd('other-options-collapsible');
+});
+
 // Make sure that custom margins controls are properly set up.
 TEST_F('PrintPreviewWebUITest', 'CustomMarginsControlsCheck', function() {
   this.setInitialSettings();

printing/print_job_constants.cc

@@ -51,6 +51,9 @@ const char kSettingCopies[] = "copies";
 // Device name: Unique printer identifier.
 const char kSettingDeviceName[] = "deviceName";
 
+// Option to disable scaling. True if scaling is disabled else false.
+const char kSettingDisableScaling[] = "disableScaling";
+
 // Print job duplex mode.
 const char kSettingDuplexMode[] = "duplex";
 

printing/print_job_constants.h

@@ -25,6 +25,7 @@ PRINTING_EXPORT extern const char kSettingContentHeight[];
 PRINTING_EXPORT extern const char kSettingContentWidth[];
 PRINTING_EXPORT extern const char kSettingCopies[];
 PRINTING_EXPORT extern const char kSettingDeviceName[];
+PRINTING_EXPORT extern const char kSettingDisableScaling[];
 PRINTING_EXPORT extern const char kSettingDuplexMode[];
 PRINTING_EXPORT extern const char kSettingFitToPageEnabled[];
 PRINTING_EXPORT extern const char kSettingGenerateDraftData[];