1 files changed, 73 insertions, 0 deletions
diff --git a/mobile/android/chrome/content/PrintHelper.js b/mobile/android/chrome/content/PrintHelper.js
new file mode 100644
index 000000000..9b071ee92
--- /dev/null
+++ b/mobile/android/chrome/content/PrintHelper.js
@@ -0,0 +1,73 @@
+// -*- Mode: js; tab-width: 2; indent-tabs-mode: nil; js2-basic-offset: 2; js2-skip-preprocessor-directives: t; -*-
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+XPCOMUtils.defineLazyModuleGetter(this, "Snackbars", "resource://gre/modules/Snackbars.jsm");
+
+var PrintHelper = {
+  init: function() {
+    Services.obs.addObserver(this, "Print:PDF", false);
+  },
+
+  observe: function (aSubject, aTopic, aData) {
+    let browser = BrowserApp.selectedBrowser;
+
+    switch (aTopic) {
+      case "Print:PDF":
+        Messaging.handleRequest(aTopic, aData, (data) => {
+          return this.generatePDF(browser);
+        });
+        break;
+    }
+  },
+
+  generatePDF: function(aBrowser) {
+    // Create the final destination file location
+    let fileName = ContentAreaUtils.getDefaultFileName(aBrowser.contentTitle, aBrowser.currentURI, null, null);
+    fileName = fileName.trim() + ".pdf";
+
+    let file = Services.dirsvc.get("TmpD", Ci.nsIFile);
+    file.append(fileName);
+    file.createUnique(file.NORMAL_FILE_TYPE, parseInt("666", 8));
+
+    let printSettings = Cc["@mozilla.org/gfx/printsettings-service;1"].getService(Ci.nsIPrintSettingsService).newPrintSettings;
+    printSettings.printSilent = true;
+    printSettings.showPrintProgress = false;
+    printSettings.printBGImages = false;
+    printSettings.printBGColors = false;
+    printSettings.printToFile = true;
+    printSettings.toFileName = file.path;
+    printSettings.printFrameType = Ci.nsIPrintSettings.kFramesAsIs;
+    printSettings.outputFormat = Ci.nsIPrintSettings.kOutputFormatPDF;
+
+    let webBrowserPrint = aBrowser.contentWindow.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(Ci.nsIWebBrowserPrint);
+
+    return new Promise((resolve, reject) => {
+      webBrowserPrint.print(printSettings, {
+        onStateChange: function(webProgress, request, stateFlags, status) {
+          // We get two STATE_START calls, one for STATE_IS_DOCUMENT and one for STATE_IS_NETWORK
+          if (stateFlags & Ci.nsIWebProgressListener.STATE_START && stateFlags & Ci.nsIWebProgressListener.STATE_IS_NETWORK) {
+            // Let the user know something is happening. Generating the PDF can take some time.
+            Snackbars.show(Strings.browser.GetStringFromName("alertPrintjobToast"), Snackbars.LENGTH_LONG);
+          }
+
+          // We get two STATE_STOP calls, one for STATE_IS_DOCUMENT and one for STATE_IS_NETWORK
+          if (stateFlags & Ci.nsIWebProgressListener.STATE_STOP && stateFlags & Ci.nsIWebProgressListener.STATE_IS_NETWORK) {
+            if (Components.isSuccessCode(status)) {
+              // Send the details to Java
+              resolve({ file: file.path, title: fileName });
+            } else {
+              reject();
+            }
+          }
+        },
+        onProgressChange: function () {},
+        onLocationChange: function () {},
+        onStatusChange: function () {},
+        onSecurityChange: function () {},
+      });
+    });
+  }
+};