From 4717e212211d264204d4a16da277b3ee74cc8c60 Mon Sep 17 00:00:00 2001
From: MurakamiShinyu <murakami@vivliostyle.org>
Date: Wed, 30 Jan 2019 16:30:00 +0900
Subject: [PATCH] Add EPUB metadata and HTML title info in the location
 notification

---
 src/adapt/epub.js   | 2 ++
 src/adapt/viewer.js | 8 +++++---
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/adapt/epub.js b/src/adapt/epub.js
index 6d4dd724d..f8a316433 100644
--- a/src/adapt/epub.js
+++ b/src/adapt/epub.js
@@ -229,6 +229,7 @@ adapt.epub.OPFItem = function() {
     /** @type {?string} */ this.id = null;
     /** @type {string} */ this.src = "";
     /** @type {?string} */ this.mediaType = null;
+    /** @type {?string} */ this.title = null;
     /** @type {Element} */ this.itemRefElement = null;
     /** @type {number} */ this.spineIndex = -1;
     /** @type {number} */ this.compressedSize = 0;
@@ -2112,6 +2113,7 @@ adapt.epub.OPFView.prototype.getPageViewItem = function(spineIndex) {
     const item = self.opf.spine[spineIndex];
     const store = self.opf.store;
     store.load(item.src).then(xmldoc => {
+        item.title = xmldoc.document.title;
         const style = store.getStyleForDoc(xmldoc);
         const customRenderer = self.makeCustomRenderer(xmldoc);
         let viewport = self.viewport;
diff --git a/src/adapt/viewer.js b/src/adapt/viewer.js
index b5862594a..71dbb83a2 100644
--- a/src/adapt/viewer.js
+++ b/src/adapt/viewer.js
@@ -864,7 +864,9 @@ adapt.viewer.Viewer.prototype.resize = function() {
                         "t": "nav",
                         "epageCount": epageCount,
                         "first": self.currentPage.isFirstPage,
-                        "last": self.currentPage.isLastPage
+                        "last": self.currentPage.isLastPage,
+                        "metadata": self.opf.metadata,
+                        "itemTitle": self.opf.spine[self.pagePosition.spineIndex].title
                     };
                     if (self.currentPage.isFirstPage || self.pagePosition.pageIndex == 0 &&
                             self.opf.spine[self.pagePosition.spineIndex].epage) {
@@ -908,8 +910,8 @@ adapt.viewer.Viewer.prototype.resize = function() {
  */
 adapt.viewer.Viewer.prototype.sendLocationNotification = function(page, cfi) {
     /** @type {!adapt.task.Frame.<boolean>} */ const frame = adapt.task.newFrame("sendLocationNotification");
-    const notification = {"t": "nav", "first": page.isFirstPage,
-        "last": page.isLastPage};
+    const notification = {"t": "nav", "first": page.isFirstPage, "last": page.isLastPage,
+        "metadata": this.opf.metadata, "itemTitle": this.opf.spine[page.spineIndex].title};
     const self = this;
     this.opf.getEPageFromPosition(/** @type {adapt.epub.Position} */(self.pagePosition)).then(epage => {
         notification["epage"] = epage;