From 6597dba36d3680e21faa237e1df5503fe3f64df6 Mon Sep 17 00:00:00 2001
From: John Crepezzi <john.crepezzi@gmail.com>
Date: Fri, 18 Nov 2011 16:22:00 -0500
Subject: [PATCH] Handle push state entirely

---
 lib/document_handler.js |  2 ++
 lib/static_handler.js   |  9 ++++++---
 static/application.js   | 42 ++++++++++++++++++++++++++++++++++++-----
 static/index.html       | 12 +++++++++++-
 4 files changed, 56 insertions(+), 9 deletions(-)

diff --git a/lib/document_handler.js b/lib/document_handler.js
index cb4331d..742e910 100644
--- a/lib/document_handler.js
+++ b/lib/document_handler.js
@@ -41,4 +41,6 @@ DocumentHandler.prototype.handlePost = function(request, response) {
   });
 };
 
+// TODO block modifying
+
 module.exports = DocumentHandler;
diff --git a/lib/static_handler.js b/lib/static_handler.js
index 95b0e57..6a90dfb 100644
--- a/lib/static_handler.js
+++ b/lib/static_handler.js
@@ -25,6 +25,7 @@ StaticHandler.contentTypeFor = function(ext) {
 // Handle a request, and serve back the asset if it exists
 StaticHandler.prototype.handle = function(incPath, response) {
   var filePath = this.basePath + (incPath == '/' ? this.defaultPath : incPath);
+  var _this = this;
   path.exists(filePath, function(exists) {
     if (exists) {
       fs.readFile(filePath, function(error, content) {
@@ -41,9 +42,11 @@ StaticHandler.prototype.handle = function(incPath, response) {
       });    
     }
     else {
-      winston.warn('file not found', { path: filePath });
-      response.writeHead(404, { 'content-type': 'application/json' });
-      response.end(JSON.stringify({ message: 'file not found' }));
+      // TODO 404 if not match regex
+      //winston.warn('file not found', { path: filePath });
+      //response.writeHead(404, { 'content-type': 'application/json' });
+      //response.end(JSON.stringify({ message: 'file not found' }));
+      _this.handle('/', response);
     }
   }); 
 };
diff --git a/static/application.js b/static/application.js
index e16c3a6..9e5b95a 100644
--- a/static/application.js
+++ b/static/application.js
@@ -6,6 +6,28 @@ var heist_document = function() {
 
 };
 
+heist_document.prototype.load = function(key, callback) {
+
+  var _this = this;
+
+  $.ajax('/documents/' + key, {
+    type: 'get',
+    dataType: 'json',
+
+    success: function(res) {
+      _this.locked = true;
+      _this.data = res.data;
+      var high = hljs.highlightAuto(res.data);
+      callback({
+        value: high.value,
+        uuid: key,
+        language: high.language
+      });
+    }
+  });
+
+};
+
 heist_document.prototype.save = function(data, callback) {
 
   if (this.locked) {
@@ -60,10 +82,23 @@ heist.prototype.newDocument = function(ext) {
   this.doc = new heist_document();
   this.$box.hide();
   this.setTitle();
-  window.history.pushState(null, this.appName, '/');
   this.$textarea.val('').show().focus();
 }
 
+// Load a document and show it
+heist.prototype.loadDocument = function(key) {
+  var _this = this;
+  _this.doc = new heist_document();
+  _this.doc.load(key, function(ret) {
+    if (ret) {
+      _this.$code.html(ret.value);
+      _this.setTitle(ret.language ? ret.language : 'unknown');
+      _this.$textarea.val('').hide();
+      _this.$box.show();
+    }
+  });
+};
+
 // Duplicate the current document - only if locked
 heist.prototype.duplicateDocument = function() {
   if (this.doc.locked) {
@@ -79,7 +114,7 @@ heist.prototype.lockDocument = function() {
   this.doc.save(this.$textarea.val(), function(ret) {
     if (ret) {
       _this.$code.html(ret.value);
-      _this.setTitle(ret.language + '-' + ret.uuid);
+      _this.setTitle(ret.language ? ret.language : 'unknown');
       window.history.pushState(null, _this.appName + '-' + ret.uuid, '/' + ret.uuid);
       _this.$textarea.val('').hide();
       _this.$box.show();
@@ -112,11 +147,8 @@ heist.prototype.configureShortcuts = function() {
 
 // TODO handle not found gracefully
 // TODO refuse to lock empty documents
-// TODO support for browsers without pushstate
-// TODO support for push state navigation
 
 ///// Tab behavior in the textarea - 2 spaces per tab
-
 $(function() {
 
   $('textarea').keydown(function(evt) {
diff --git a/static/index.html b/static/index.html
index 323f274..46b4eb7 100644
--- a/static/index.html
+++ b/static/index.html
@@ -39,9 +39,19 @@
 
 		<script type="text/javascript">
 			$(function() {
+				// Set up
 				var app = new heist('heist');
-				app.newDocument();	
 				$('textarea').focus();
+				// Handle pops
+				window.onpopstate = function(evt) {
+					var path = evt.target.location.pathname;
+					if (path === '/') {
+						app.newDocument();	
+					}
+					else {
+						app.loadDocument(path.substring(1, path.length));
+					}
+				};
 			});
 		</script>