From 3759157f6b035d43880b3c5425bc8dc558191da1 Mon Sep 17 00:00:00 2001
From: Bala Clark <balaclark@gmail.com>
Date: Sun, 28 Aug 2011 19:22:38 +0200
Subject: [PATCH] created functions for get/set hash

---
 lib/ComicBook.js | 26 +++++++++++++++++++-------
 1 file changed, 19 insertions(+), 7 deletions(-)
 mode change 100644 => 100755 lib/ComicBook.js

diff --git a/lib/ComicBook.js b/lib/ComicBook.js
old mode 100644
new mode 100755
index 468e339..4065b75
--- a/lib/ComicBook.js
+++ b/lib/ComicBook.js
@@ -70,13 +70,27 @@ function ComicBook(id, srcs, opts) {
 	 **/
 	function checkHash() {
 		
-		var hash = parseInt(location.hash.substring(1),10) - 1 || 0;
+		var hash = getHash();
 		
 		if (hash !== pointer && loaded.indexOf(hash) > -1) {
 			pointer = hash;
 			ComicBook.prototype.draw();
 		}
 	}
+
+	function getHash() {
+		return parseInt(location.hash.substring(1),10) - 1 || 0;
+	}
+
+	function setHash() {
+
+		var pageNo = pointer + 1;
+		
+		if (getHash() !== '#'+pageNo) {
+			location.hash = pageNo;
+			if (options.savePosition === true) { setLastPage(pageNo); };
+		}
+	}
 	
 	/**
 	 * Figure out the cursor position relative to the canvas.
@@ -104,9 +118,9 @@ function ComicBook(id, srcs, opts) {
 	/**
 	 * Tell the library app where the user is up to
 	 **/
-	function setLastPage() {
+	function setLastPage(pageNo) {
 		if (!options.data.comicId) { throw 'options.data.comicId is not set.'; }
-		$.post('/comic/setlastpage', { page: pointer+1, comic: options.data.comicId });
+		$.post('/comic/setlastpage', { page: pageNo, comic: options.data.comicId });
 	}
 
 	/**
@@ -220,8 +234,6 @@ function ComicBook(id, srcs, opts) {
 		var page = pages[pointer];
 		var page2 = pages[pointer + 1];
 
-		if (options.savePosition === true) { setLastPage(); };
-
 		if (typeof page !== "object") { throw "invalid page type '"+ typeof page +"'"; }
 		
 		var width = page.width;
@@ -299,8 +311,8 @@ function ComicBook(id, srcs, opts) {
 		context.drawImage(page, offsetW, offsetH, page_width, page_height);
 		if (options.displayMode === "double" && typeof page2 === "object") { context.drawImage(page2, page_width + offsetW, offsetH, page_width, page_height); }
 
-		location.hash = pointer + 1;
-		
+		setHash(pointer + 1);
+
 		// apply any image enhancements previously defined
 		$.each(options.enhance, function(action, options) {
 			ComicBook.prototype.enhance[action](options);