Set Cover Page Title in Epub 3 (2) (#2293)

* Make sure that the title of generated cover pages is set for epub 3

* hardcode the value of the title for the epub to Cover

Author: pjkaufman

plugin/js/EpubItemSupplier.js

@@ -39,11 +39,16 @@ class EpubItemSupplier { // eslint-disable-line no-unused-vars
         }
     }
 
-    makeCoverImageXhtmlFile(emptyDocFactory) {
+    makeCoverImageXhtmlFile(emptyDocFactory, title) {
         let doc = emptyDocFactory();
         let body = doc.getElementsByTagName("body")[0];
         let userPreferences = this.imageCollector.userPreferences;
         body.appendChild(this.coverImageInfo.createImageElement(userPreferences));
+
+        if (title) {
+            doc.querySelector("title").text = title;
+        }
+
         return util.xmlToString(doc);
     }
 

plugin/js/EpubPacker.js

@@ -345,7 +345,7 @@ class EpubPacker {
             file.packInEpub(zipWriter, this.emptyDocFactory, this.contentValidator);
         }
         if (epubItemSupplier.hasCoverImageFile()) {
-            let fileContent = epubItemSupplier.makeCoverImageXhtmlFile(this.emptyDocFactory);
+            let fileContent = epubItemSupplier.makeCoverImageXhtmlFile(this.emptyDocFactory, "Cover");
             zipWriter.add(EpubPacker.coverImageXhtmlHref(), new zip.TextReader(fileContent));
         }
     }