copy current state of medienstaatsvertrag.org, to be verified

website/agenda/planung/js/history.js

@@ -0,0 +1,148 @@
+function setCookie(name, value) {
+    document.cookie = name + "=" + value + "; "
+}
+
+function clearCookie(name) {
+    document.cookie = name + "=; "
+}
+
+function getCookie(name) {
+    var cookies = document.cookie.split('; ');
+    for(var i=0; i<cookies.length; i++) {
+        
+        if (cookies[i].indexOf(name+'=')==0){
+            return cookies[i].substring(name.length+1);
+        }
+    }
+    return "";
+}
+
+function getHistory(){
+    var value=getCookie("history");
+    var history = value.split("|");
+    return history;
+}
+
+function comeFromCalendar(){
+    var history=getHistory();
+    if (history.length<2)return false;
+    if (history[1].indexOf("calendar")==-1)return false;
+    return true;
+}
+
+//return history or null, if url should not be appended to history
+function isNewToHistory(url){
+    //if (window.location.search=='')return null;
+    
+    /*
+    if (contains(url,"action")){
+        //action defined but not show...,edit...
+        if (
+               (!contains(url,"action=show"))
+            && (!contains(url,"action=edit"))
+        ){
+            //alert("return");
+            //return null;
+        }
+    }
+    */
+    var params=window.location.search;
+
+    var history = getHistory();
+    //last page already in history
+    if (history[0] == url) return null;
+
+    //replace url in history by current one, if controller is the same
+    var urlController=url.split('.cgi').shift();
+    var historyController=history[0].split('.cgi').shift();
+
+    //remove last entry on same controller
+    if(urlController==historyController){
+        var ignore=0;
+        //provide back to series from series details
+        if(contains(url,'series')){
+            console.log(url);
+            console.log(history[0]);
+            if( (contains(url,'series_id')==true)  && (contains(history[0],'series_id')==false)) ignore=1;
+            console.log(ignore);
+        }
+        if (ignore==0) history.shift();
+    }
+
+    return history;
+}
+
+// for back button add url to history, if no POST and not visited before
+function appendHistory(url, rewrite){
+    if (url==null) url=window.location.href;
+    //no parameters -> propably POST?
+
+    var history=isNewToHistory(url);
+    if (history==null) return;
+
+    //remove first element
+    if(rewrite!=null)history.shift();
+
+    //limit size
+    if(history.length>20) history.pop();
+
+    if(history.length==0){
+        setCookie("history", url);
+    }else{
+        var content=url;
+        var i=0;
+        for (i in history){
+            if ((history[i]!=null)&&(history[i]!=''))content+='|'+history[i];
+        }
+        setCookie("history", content);
+    }
+    //showHistory();
+}
+
+function showHistory(){
+    var history=getHistory();
+    var s='<pre style="z-index:110;position:absolute;right:0;top:0">';
+    for (var i=5; i>=0;i--){
+        if(history[i]!=null) s+=i+" "+history[i]+"\n";
+    }
+    s+='</pre>';
+    //alert(s)
+    $('#content').prepend(s);
+}
+
+function getBack(){
+    var history=getHistory();
+    //alert("getBack")
+    if (history.length==0)return;
+    //remove current page
+    history.shift();
+    if (history.length==0)return;
+    //remove previous page
+    var url=history.shift();
+    setCookie("history", history.join("|"));
+    window.location.href=url;
+}
+
+// add back button if not existing
+function addBackButton(){
+
+    var backButton=$('#backButton');
+    if(backButton.length>0)return;
+    if (loc['button_back']==null)return;
+
+    // add back button if history exists
+    var history=getHistory();
+    //console.log(history.length);
+    if (history.length>1)  $('#calcms_admin_menu').first().prepend(
+        '<div><a id="backButton" href="#" onclick="getBack();">'
+        +loc['button_back']
+        +'</a></div>'
+    );
+    //showHistory();
+}
+
+$(document).ready(function(){
+    //clearCookie();
+    appendHistory();
+});
+