Initial support for cloudprint in print preview

chrome/browser/resources/print_preview.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.
 
+// require: cr/ui/print_preview_cloud.js
+
 var localStrings = new LocalStrings();
 
+var useCloudPrint = false;
+var maxCloudPrinters = 10;
+
 // The total page count of the previewed document regardless of which pages the
 // user has selected.
 var totalPageCount = -1;
 
 // The previously selected pages by the user. It is used in
 // onPageSelectionMayHaveChanged() to make sure that a new preview is not
 // requested more often than necessary.
 var previouslySelectedPages = [];
 
 // The previously selected layout mode. It is used in order to prevent the
@@ skipping 11 matching lines @@
 // Indicates whether a preview has been requested but not received yet.
 var isPreviewStillLoading = true;
 
 // Currently selected printer capabilities.
 var printerCapabilities;
 
 // Used to disable some printing options when the preview is not modifiable.
 var previewModifiable = false;
 
 // Destination list special value constants.
+const ADD_PRINTER = 'addPrinter';
+const MANAGE_CLOUD_PRINTERS = 'manageCloudPrinters';
+const MANAGE_LOCAL_PRINTERS = 'manageLocalPrinters';
+const MORE_PRINTERS = 'morePrinters';
+const SIGN_IN = 'signIn';
 const PRINT_TO_PDF = 'Print To PDF';
-const MANAGE_PRINTERS = 'Manage Printers';
 
 /**
  * Window onload handler, sets up the page and starts print preview by getting
  * the printer list.
  */
 function onLoad() {
   $('system-dialog-link').addEventListener('click', showSystemDialog);
   $('cancel-button').addEventListener('click', handleCancelButtonClick);
 
   if (!checkCompatiblePluginExists()) {
@@ skipping 60 matching lines @@
 /**
  * Gets the selected printer capabilities and updates the controls accordingly.
  */
 function updateControlsWithSelectedPrinterCapabilities() {
   var printerList = $('printer-list');
   var selectedIndex = printerList.selectedIndex;
   if (selectedIndex < 0)
     return;
 
   var selectedValue = printerList.options[selectedIndex].value;
-  if (selectedValue == PRINT_TO_PDF) {
+  if (printerList.options[selectedIndex].isCloudPrint) {
+    // TODO(abodenha@chromium.org) Retrieve the correct printer caps.
+    updateWithPrinterCapabilities({});
+    return;
+  } else if (selectedValue == SIGN_IN ||
+             selectedValue == MANAGE_CLOUD_PRINTERS ||
+             selectedValue == MANAGE_LOCAL_PRINTERS) {
+    printerList.selectedIndex = lastSelectedPrinterIndex;
+    chrome.send(selectedValue);
+    return;
+  } else if (selectedValue == PRINT_TO_PDF) {
     updateWithPrinterCapabilities({'disableColorOption': true,
                                    'setColorAsDefault': true});
-  } else if (selectedValue == MANAGE_PRINTERS) {
-    printerList.selectedIndex = lastSelectedPrinterIndex;
-    chrome.send('managePrinters');
-    return;
   } else {
     // This message will call back to 'updateWithPrinterCapabilities'
     // function.
     chrome.send('getPrinterCapabilities', [selectedValue]);
   }
 
   lastSelectedPrinterIndex = selectedIndex;
 
   // Regenerate the preview data based on selected printer settings.
   setDefaultValuesAndRegeneratePreview();
@@ skipping 20 matching lines @@
     $('color-options').classList.remove("hidden");
 
   if (colorOption.checked != setColorAsDefault) {
     colorOption.checked = setColorAsDefault;
     bwOption.checked = !setColorAsDefault;
     setColor(colorOption.checked);
   }
 }
 
 /**
+ * Turn on the integration of Cloud Print.
+ * @param {enable} true if cloud print should be used.
+ */
+function setUseCloudPrint(enable, cloudPrintURL) {
+  useCloudPrint = enable;
+  cloudprint.setBaseURL(cloudPrintURL);
+}
+
+/**
+ * Take the PDF data handed to us and submit it to the cloud, closing the print
+ * preview tab once the upload is successful.
+ * @param {pdfData} data to send as the print job.
+ */
+function printToCloud(data) {
+  cloudprint.printToCloud(data, finishedCloudPrinting);
+}
+
+/**
+ * Cloud print upload of the PDF file is finished, time to close the dialog.
+ */
+function finishedCloudPrinting() {
+  chrome.send('closePrintPreviewTab');
+}
+
+/**
  * Disables or enables all controls in the options pane except for the cancel
  * button.
  */
 function setControlsDisabled(disabled) {
   var elementList = $('controls').elements;
   for (var i = 0; i < elementList.length; ++i) {
     if (elementList[i] == $('cancel-button'))
       continue;
     elementList[i].disabled = disabled;
   }
@@ skipping 106 matching lines @@
   const LONG_EDGE = 1;
   return !isTwoSided() ? SIMPLEX : LONG_EDGE;
 }
 
 /**
  * Creates a JSON string based on the values in the printer settings.
  *
  * @return {string} JSON string with print job settings.
  */
 function getSettingsJSON() {
+  var printerList = $('printer-list');
+  var selectedPrinter = printerList.selectedIndex;
   var printAll = $('all-pages').checked;
   var deviceName = getSelectedPrinterName();
   var printToPDF = (deviceName == PRINT_TO_PDF);
 
-  return JSON.stringify({'deviceName': deviceName,
-                         'pageRange': getSelectedPageRanges(),
-                         'printAll': printAll,
-                         'duplex': getDuplexMode(),
-                         'copies': getCopies(),
-                         'collate': isCollated(),
-                         'landscape': isLandscape(),
-                         'color': isColor(),
-                         'printToPDF': printToPDF});
+  var settings = {'deviceName': deviceName,
+                  'pageRange': getSelectedPageRanges(),
+                  'printAll': printAll,
+                  'duplex': getDuplexMode(),
+                  'copies': getCopies(),
+                  'collate': isCollated(),
+                  'landscape': isLandscape(),
+                  'color': isColor(),
+                  'printToPDF': printToPDF};
+  if (printerList.options[selectedPrinter].isCloudPrint) {
+    settings['cloudPrintID'] =
+        printerList.options[selectedPrinter].value;
+  }
+
+  return JSON.stringify(settings);
 }
 
 /**
  * Returns the name of the selected printer or the empty string if no
  * printer is selected.
  */
 function getSelectedPrinterName() {
   var printerList = $('printer-list')
   var selectedPrinter = printerList.selectedIndex;
   var deviceName = '';
@@ skipping 28 matching lines @@
 }
 
 /**
  * Fill the printer list drop down.
  * Called from PrintPreviewHandler::SendPrinterList().
  * @param {Array} printers Array of printer info objects.
  * @param {number} defaultPrinterIndex The index of the default printer.
  */
 function setPrinters(printers, defaultPrinterIndex) {
   var printerList = $('printer-list');
+  if (useCloudPrint) {
+    displayErrorMessage(localStrings.getString('loadingPrinters'));
+    cloudprint.fetchPrinters(addCloudPrinters);
+    if (printers.length > 0) {
+      option = addDestinationListOption('', '', false, true);
+      option = addDestinationListOption(localStrings.getString('localPrinters'),
+                                        '',
+                                        false,
+                                        true);
+    }
+  }
   for (var i = 0; i < printers.length; ++i) {
     addDestinationListOption(printers[i].printerName, printers[i].deviceName,
                              i == defaultPrinterIndex, false);
   }
 
   if (printers.length != 0)
     addDestinationListOption('', '', false, true);
 
   // Adding option for saving PDF to disk.
   addDestinationListOption(localStrings.getString('printToPDF'),
                            PRINT_TO_PDF, false, false);
   addDestinationListOption('', '', false, true);
 
-  // Add an option to manage printers.
-  addDestinationListOption(localStrings.getString('managePrinters'),
-                           MANAGE_PRINTERS, false, false);
+  // Add options to manage printers.
+  if (!cr.isChromeOS) {
+    addDestinationListOption(localStrings.getString('manageLocalPrinters'),
+        MANAGE_LOCAL_PRINTERS, false, false);
+  }
+  if (useCloudPrint) {
+    addDestinationListOption(localStrings.getString('manageCloudPrinters'),
+        MANAGE_CLOUD_PRINTERS, false, false);
+  }
 
   printerList.disabled = false;
   updateControlsWithSelectedPrinterCapabilities();
 }
 
 /**
  * Adds an option to the printer destination list.
  * @param {String} optionText specifies the option text content.
  * @param {String} optionValue specifies the option value.
  * @param {boolean} isDefault is true if the option needs to be selected.
  * @param {boolean} isDisabled is true if the option needs to be disabled.
  */
 function addDestinationListOption(optionText, optionValue, isDefault,
     isDisabled) {
   var option = document.createElement('option');
   option.textContent = optionText;
   option.value = optionValue;
   $('printer-list').add(option);
   option.selected = isDefault;
   option.disabled = isDisabled;
+  return option;
 }
 
 /**
+ * Add cloud printers to the list drop down.
+ * Called from the cloudprint object on receipt of printer information from the
+ * cloud print server.
+ */
+function addCloudPrinters(printers) {
+  addDestinationListOption(localStrings.getString('cloudPrinters'),
+                           '',
+                           false,
+                           true);
+  if (printers != null) {
+    var l = printers.length;
+    if (l > maxCloudPrinters) {
+      l = maxCloudPrinters;
+    }
+    for (var i = 0; i < l; i++) {
+      var option = addDestinationListOption(printers[i]['name'],
+                                            printers[i]['id'],
+                                            i == 0,
+                                            false);
+      option.isCloudPrint = true;
+    }
+    if (printers.length == 0) {
+      addDestinationListOption(localStrings.getString('addCloudPrinter'),
+          ADD_PRINTER, false, false);
+    }
+    if (l < printers.length) {
+      var option = addDestinationListOption('', '', false, true);
+      addDestinationListOption(localStrings.getString('morePrinters'),
+          MORE_PRINTERS, false, false);
+    }
+  } else {
+    addDestinationListOption(localStrings.getString('signIn'),
+        SIGN_IN, false, false);
+  }
+}
+
+/**
  * Sets the color mode for the PDF plugin.
  * Called from PrintPreviewHandler::ProcessColorSetting().
  * @param {boolean} color is true if the PDF plugin should display in color.
  */
 function setColor(color) {
   var pdfViewer = $('pdf-viewer');
   if (!pdfViewer) {
     return;
   }
   pdfViewer.grayscale(!color);
@@ skipping 516 matching lines @@
   if (!isNumberOfCopiesValid())
     copiesField.value = 1;
   else {
     var newValue = getCopies() + sign * 1;
     if (newValue < copiesField.min || newValue > copiesField.max)
       return;
     copiesField.value = newValue;
   }
   copiesFieldChanged();
 }
-