From 44fca1e662839a7ed97ba47441c7131b5340eaf6 Mon Sep 17 00:00:00 2001
From: Naeltard <t.rechel@webcraft-media.de>
Date: Tue, 27 Jan 2015 01:01:26 +0100
Subject: [PATCH] system history back/push fix

---
 files/sys/system.js | 134 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 134 insertions(+)
 create mode 100644 files/sys/system.js

diff --git a/files/sys/system.js b/files/sys/system.js
new file mode 100644
index 0000000..d4499e9
--- /dev/null
+++ b/files/sys/system.js
@@ -0,0 +1,134 @@
+var system = null;
+
+//mother object
+function SYSTEM(endpoint, group,start_state){
+    system = this;
+    
+    this.LOG_START  = 0;
+    this.LOG_INFO   = 1;
+    this.LOG_ERROR  = 2;
+    
+    this.endpoint = endpoint;
+    this.group = group;
+    this.pages = null;
+    this.start_state = start_state;
+    this.go_state(start_state);
+    
+    $(window).bind( 'hashchange', function( event ) {
+        system.go_state();});
+}
+//internal function to handle pagestate results
+SYSTEM.prototype.handle_call_pages = function (data,id) {
+    if(data['status']){
+        system.log(system.LOG_INFO,'load pages: endpoint '+system.endpoint+':group '+system.group+':state '+id+' - success');
+        if(id !== system.cur_state()){
+            window.history.pushState(null, "", '#'+id);}
+        data['result'].forEach(function(entry) {
+            //load pages
+            $.ajax({
+                    async: false,
+                    data: {},
+                    dataType: 'html',
+                    url: entry['url']+'&'+window.location.search.substr(1),
+                    success:    function(data){
+                        $(entry['div']).html(data);
+                        system.log(system.LOG_INFO,'load page: '+id+entry['div']+' '+entry['url']+'&'+window.location.search.substr(1)+' - success');},
+                        error: function(XMLHttpRequest, textStatus, errorThrown){system.log(system.LOG_ERROR,errorThrown);}
+            });
+            //load css
+            for(var i=0; i < entry['css'].length; i++){
+                system.load_css(entry['css'][i]);}
+            //load js
+            var call_func = true;
+            var loaded = 0;
+            for(var i=0; i < entry['js'].length; i++){
+                system.log(system.LOG_INFO,'load js: '+entry['js'][i]);
+                $.getScript(entry['js'][i]).done(function(response, status) {
+                    system.log(system.LOG_INFO,'load js: '+status);
+                    if(loaded++ == entry['js'].length-1){
+                        var fn = window[entry['func']];
+                        if(call_func && typeof fn === 'function'){
+                            call_func = false;
+                            fn();
+                            system.log(system.LOG_INFO,'call func: '+entry['func']);
+                        } else {
+                            system.log(system.LOG_ERROR,'call func: '+entry['func']+' - fail');
+                        }}
+                    });
+            }
+        });
+    } else {
+        console.log(data);
+        system.log(system.LOG_INFO,'Problem with your Pages: '+data['result']['message']);
+    }
+};
+//send a call to the endpoint
+SYSTEM.prototype.call = function(call,success,data,data_type,async){
+    $.ajax({
+            async: async,
+            data: data,
+            dataType: data_type,
+            url: this.endpoint+'?'+call,
+            success: success,
+            error: function(XMLHttpRequest, textStatus, errorThrown){system.log(system.LOG_ERROR,call+' '+XMLHttpRequest+' '+textStatus+' '+errorThrown);}
+    });
+};
+SYSTEM.prototype.log = function(type,msg){
+    var res = '';
+    switch(type){
+        case system.LOG_START:
+            res = '#SYSTEM: ';
+            break;
+        case system.LOG_INFO:
+            res = '-SYSTEM: ';
+            break;
+        case system.LOG_ERROR:
+            res = '!SYSTEM-ERROR: ';
+            break;
+    }
+    console.log(res+msg);
+};
+//get the pages and save em
+SYSTEM.prototype.load_page = function(){
+    result = false;
+    newps = this.pages;
+    if(!this.pages){
+        this.call('call=pages&group='+this.group,this.handle_call_pages,{},"json",false);
+    } else { result = true;}
+    this.pages = newps;
+    return result;
+};
+//load a pagestatewith given id
+SYSTEM.prototype.load = function(id){
+    system.log(system.LOG_START,'load page '+id);
+    this.call('call=pages&group='+this.group+'&state='+id,function(data){system.handle_call_pages(data,id);},{},"json",false);};
+
+SYSTEM.prototype.load_css = function loadCSS(csssrc) {
+    var snode = document.createElement('link');
+    snode.setAttribute('type','text/css');
+    snode.setAttribute('rel', 'stylesheet');
+    snode.setAttribute('href',csssrc);
+    document.getElementsByTagName('head')[0].appendChild(snode);
+    system.log(system.LOG_INFO,'load css '+csssrc);
+};
+
+//what?
+SYSTEM.prototype.cur_state = function() {
+    var pathName = window.location.href;
+    if (pathName.indexOf('#') != -1) {
+        return pathName.split('#').pop();}
+    return '';
+};
+
+SYSTEM.prototype.go_state = function(default_state){
+    var pageName = this.cur_state();
+    this.load(pageName ? pageName : default_state);
+};
+
+SYSTEM.prototype.back = function(){
+    window.history.back();
+};
+
+SYSTEM.prototype.forwad = function(){
+    window.history.forward();
+};
\ No newline at end of file