Merged in feature/from-pantheon (pull request #16)

code from pantheon

* code from pantheon

wp/wp-includes/blocks/file/view.js

@@ -0,0 +1,82 @@
+"use strict";
+(self["__WordPressPrivateInteractivityAPI__"] = self["__WordPressPrivateInteractivityAPI__"] || []).push([[81],{
+
+/***/ 149:
+/***/ (function(__unused_webpack_module, __unused_webpack___webpack_exports__, __webpack_require__) {
+
+
+// EXTERNAL MODULE: ./node_modules/@wordpress/interactivity/src/index.js + 15 modules
+var src = __webpack_require__(754);
+;// CONCATENATED MODULE: ./node_modules/@wordpress/block-library/build-module/file/utils/index.js
+/**
+ * Uses a combination of user agent matching and feature detection to determine whether
+ * the current browser supports rendering PDFs inline.
+ *
+ * @return {boolean} Whether or not the browser supports inline PDFs.
+ */
+const browserSupportsPdfs = () => {
+  // Most mobile devices include "Mobi" in their UA.
+  if (window.navigator.userAgent.indexOf('Mobi') > -1) {
+    return false;
+  }
+
+  // Android tablets are the noteable exception.
+  if (window.navigator.userAgent.indexOf('Android') > -1) {
+    return false;
+  }
+
+  // iPad pretends to be a Mac.
+  if (window.navigator.userAgent.indexOf('Macintosh') > -1 && window.navigator.maxTouchPoints && window.navigator.maxTouchPoints > 2) {
+    return false;
+  }
+
+  // IE only supports PDFs when there's an ActiveX object available for it.
+  if (!!(window.ActiveXObject || 'ActiveXObject' in window) && !(createActiveXObject('AcroPDF.PDF') || createActiveXObject('PDF.PdfCtrl'))) {
+    return false;
+  }
+  return true;
+};
+
+/**
+ * Helper function for creating ActiveX objects, catching any errors that are thrown
+ * when it's generated.
+ *
+ * @param {string} type The name of the ActiveX object to create.
+ * @return {window.ActiveXObject|undefined} The generated ActiveXObject, or null if it failed.
+ */
+const createActiveXObject = type => {
+  let ax;
+  try {
+    ax = new window.ActiveXObject(type);
+  } catch (e) {
+    ax = undefined;
+  }
+  return ax;
+};
+;// CONCATENATED MODULE: ./node_modules/@wordpress/block-library/build-module/file/view.js
+/**
+ * WordPress dependencies
+ */
+
+/**
+ * Internal dependencies
+ */
+
+(0,src/* store */.h)({
+  selectors: {
+    core: {
+      file: {
+        hasPdfPreview: browserSupportsPdfs
+      }
+    }
+  }
+});
+
+/***/ })
+
+},
+/******/ function(__webpack_require__) { // webpackRuntimeModules
+/******/ var __webpack_exec__ = function(moduleId) { return __webpack_require__(__webpack_require__.s = moduleId); }
+/******/ var __webpack_exports__ = (__webpack_exec__(149));
+/******/ }
+]);