Added missing files

ckan/public/base/datapreview/pdfpreview.js

@@ -0,0 +1,63 @@
+var CKAN = CKAN || {};
+
+CKAN.View = CKAN.View || {};
+CKAN.Model = CKAN.Model || {};
+CKAN.Utils = CKAN.Utils || {};
+CKAN.Strings = CKAN.Strings || {};
+
+(function ($) {
+  $(document).ready(function () {
+    //CKAN.PdfPreview.loadPreview(preload_resource);
+  });
+}(jQuery));
+
+/* =================== */
+/* == PDF Previewer == */
+/* =================== */
+CKAN.PdfPreview = function ($, my) {
+  my.dialogId = 'ckanext-pdfpreview';
+
+  // **Public: Opens a pdf preview**
+  //
+  // Returns nothing.
+  my.loadPreview = function(resourceData) {
+    'use strict';
+
+    // disable worker for now
+    // TODO: enable
+    PDFJS.disableWorker = true;
+
+    //
+    // Fetch the PDF document from the URL using promices
+    //
+    PDFJS.getDocument(resourceData['url']).then(function(pdf) {
+      // Using promise to fetch the page
+      pdf.getPage(1).then(function(page) {
+        var scale = 1.5;
+        var viewport = page.getViewport(scale);
+
+        //
+        // Prepare canvas using PDF page dimensions
+        //
+        var canvas = document.getElementById(my.dialogId);
+        var context = canvas.getContext('2d');
+        canvas.height = viewport.height;
+        canvas.width = viewport.width;
+
+        //
+        // Render PDF page into canvas context
+        //
+        var renderContext = {
+          canvasContext: context,
+          viewport: viewport
+        };
+        page.render(renderContext);
+      });
+    });
+  }
+
+  // Export the CKANEXT object onto the window.
+  $.extend(true, window, {CKANEXT: {}});
+  CKANEXT.PDFPREVIEW = my;
+  return my;
+}(jQuery, CKAN.PdfPreview || {});