Method onMetadataChange

platform/java/example/ViewerCore.java:623–623

(String title, String author, String format, String encryption)

		public void onLayoutChange(int width, int height, int em);
		public void onLinearizedChange(boolean linearized);
		public void onMetadataChange(String title, String author, String format, String encryption);
		public void onOutlineChange(OutlineItem[] outline);
		public void onOutlineItemChange(int index);
		public void onPageChange(Location page, int chapterNumber, int pageNumber, Rect bbox);