Added back button catching

amd/build/util/browserbuttonevents.min.js

@@ -0,0 +1,3 @@
+define("local_treestudyplan/util/browserbuttonevents",["exports","./debugger"],(function(_exports,_debugger){var obj;Object.defineProperty(_exports,"__esModule",{value:!0}),_exports.addBrowserButtonEvent=function(backwardCB){let forwardCB=arguments.length>1&&void 0!==arguments[1]?arguments[1]:null,reloadCB=arguments.length>2&&void 0!==arguments[2]?arguments[2]:null;debug.log("Registering navigation events",backwardCB,forwardCB,reloadCB);addEventListener("popstate",(e=>{const positionLastShown=Number(sessionStorage.getItem("positionLastShown"));let position=history.state;null===position&&(position=positionLastShown+1,history.replaceState(position,"")),sessionStorage.setItem("positionLastShown",String(position));const direction=Math.sign(position-positionLastShown);debug.log("Travel direction is "+direction),-1==direction&&backwardCB&&backwardCB(),1==direction&&forwardCB&&forwardCB(),0==direction&&reloadCB&&reloadCB()}))};const debug=new(_debugger=(obj=_debugger)&&obj.__esModule?obj:{default:obj}).default("browserbuttonevents")}));
+
+//# sourceMappingURL=browserbuttonevents.min.js.map

amd/build/util/browserbuttonevents.min.js.map

@@ -0,0 +1 @@
+{"version":3,"file":"browserbuttonevents.min.js","sources":["../../src/util/browserbuttonevents.js"],"sourcesContent":["/*eslint no-var: \"error\" */\n/*eslint no-unused-vars: \"off\" */\n/*eslint linebreak-style: \"off\" */\n/*eslint no-trailing-spaces: \"off\" */\n/*eslint-env es6*/\n\nimport Debugger from './debugger';\nconst debug = new Debugger(\"browserbuttonevents\");\n\n/**\n * \n * @param {function} backwardCB \n * @param {function} forwardCB \n * @param {function} reloadCB \n */\nexport function addBrowserButtonEvent(backwardCB, forwardCB = null, reloadCB = null) {\n    debug.log(\"Registering navigation events\",backwardCB,forwardCB,reloadCB);\n    const reorient = (e) => { // After travelling in the history stack\n        const positionLastShown = Number( // If none, then zero\n          sessionStorage.getItem( 'positionLastShown' ));\n//        debug.log(\"Popstate event\",e,positionLastShown,history);\n        let position = history.state; // Absolute position in stack\n        if( position === null ) { // Meaning a new entry on the stack\n            position = positionLastShown + 1; // Top of stack\n    \n            // (1) Stamp the entry with its own position in the stack\n            history.replaceState( position, /*no title*/'' ); \n        }\n    \n        // (2) Keep track of the last position shown\n        sessionStorage.setItem( 'positionLastShown', String(position) );\n    \n        // (3) Discover the direction of travel by comparing the two\n        const direction = Math.sign( position - positionLastShown );\n        debug.log( 'Travel direction is ' + direction ); \n          // One of backward (-1), reload (0) and forward (1)\n        if (direction == -1 && backwardCB) {\n            backwardCB();\n        }\n        if (direction == 1 && forwardCB) {\n            forwardCB();\n        }\n        if (direction == 0 && reloadCB) {\n            reloadCB();\n        }\n    };\n    //addEventListener( 'pageshow', reorient );\n    addEventListener( 'popstate', reorient ); // Travel in same page\n}"],"names":["backwardCB","forwardCB","reloadCB","debug","log","addEventListener","e","positionLastShown","Number","sessionStorage","getItem","position","history","state","replaceState","setItem","String","direction","Math","sign"],"mappings":"qNAesCA,gBAAYC,iEAAY,KAAMC,gEAAW,KAC3EC,MAAMC,IAAI,gCAAgCJ,WAAWC,UAAUC,UA+B/DG,iBAAkB,YA9BAC,UACRC,kBAAoBC,OACxBC,eAAeC,QAAS,0BAEtBC,SAAWC,QAAQC,MACN,OAAbF,WACAA,SAAWJ,kBAAoB,EAG/BK,QAAQE,aAAcH,SAAsB,KAIhDF,eAAeM,QAAS,oBAAqBC,OAAOL,iBAG9CM,UAAYC,KAAKC,KAAMR,SAAWJ,mBACxCJ,MAAMC,IAAK,uBAAyBa,YAElB,GAAdA,WAAmBjB,YACnBA,aAEa,GAAbiB,WAAkBhB,WAClBA,YAEa,GAAbgB,WAAkBf,UAClBA,qBApCNC,MAAQ,yEAAa"}

amd/build/util/debugger.min.js

@@ -1,3 +1,3 @@
-define("local_treestudyplan/util/debugger",["exports","core/config"],(function(_exports,_config){var obj;return Object.defineProperty(_exports,"__esModule",{value:!0}),_exports.default=function(handle){let output_enabled=_config.default.developerdebug;output_enabled?console.warn(`In development environment. Debugger output enabled for ${handle}`):console.warn(`In production environment. Debugger output disabled for ${handle}`);return{write(){if(output_enabled){let args=Array.prototype.slice.call(arguments);args.unshift(handle+": "),console.info.apply(console,args)}},info(){if(output_enabled){let args=Array.prototype.slice.call(arguments);args.unshift(handle+": "),console.info.apply(console,args)}},warn(){if(output_enabled){let args=Array.prototype.slice.call(arguments);args.unshift(handle+": "),console.warn.apply(console,args)}},error(){if(output_enabled){let args=Array.prototype.slice.call(arguments);args.unshift(handle+": "),console.error.apply(console,args)}},time(){if(output_enabled){let args=Array.prototype.slice.call(arguments);args.unshift(handle+": "),console.time.apply(console,args)}},timeEnd(){if(output_enabled){let args=Array.prototype.slice.call(arguments);args.unshift(handle+": "),console.timeEnd.apply(console,args)}},timeLog(){if(output_enabled){let args=Array.prototype.slice.call(arguments);args.unshift(handle+": "),console.timeLog.apply(console,args)}},timeStamp(){if(output_enabled){let args=Array.prototype.slice.call(arguments);args.unshift(handle+": "),console.timeStamp.apply(console,args)}},enable:function(){output_enabled=!0},disable:function(){output_enabled=!1}}},_config=(obj=_config)&&obj.__esModule?obj:{default:obj},_exports.default}));
+define("local_treestudyplan/util/debugger",["exports","core/config"],(function(_exports,_config){var obj;return Object.defineProperty(_exports,"__esModule",{value:!0}),_exports.default=function(handle){let output_enabled=_config.default.developerdebug;output_enabled?console.warn(`In development environment. Debugger output enabled for ${handle}`):console.warn(`In production environment. Debugger output disabled for ${handle}`);return{write(){if(output_enabled){let args=Array.prototype.slice.call(arguments);args.unshift(handle+": "),console.info.apply(console,args)}},log(){if(output_enabled){let args=Array.prototype.slice.call(arguments);args.unshift(handle+": "),console.log.apply(console,args)}},info(){if(output_enabled){let args=Array.prototype.slice.call(arguments);args.unshift(handle+": "),console.info.apply(console,args)}},warn(){if(output_enabled){let args=Array.prototype.slice.call(arguments);args.unshift(handle+": "),console.warn.apply(console,args)}},error(){if(output_enabled){let args=Array.prototype.slice.call(arguments);args.unshift(handle+": "),console.error.apply(console,args)}},time(){if(output_enabled){let args=Array.prototype.slice.call(arguments);args.unshift(handle+": "),console.time.apply(console,args)}},timeEnd(){if(output_enabled){let args=Array.prototype.slice.call(arguments);args.unshift(handle+": "),console.timeEnd.apply(console,args)}},timeLog(){if(output_enabled){let args=Array.prototype.slice.call(arguments);args.unshift(handle+": "),console.timeLog.apply(console,args)}},timeStamp(){if(output_enabled){let args=Array.prototype.slice.call(arguments);args.unshift(handle+": "),console.timeStamp.apply(console,args)}},enable:function(){output_enabled=!0},disable:function(){output_enabled=!1}}},_config=(obj=_config)&&obj.__esModule?obj:{default:obj},_exports.default}));
 
 //# sourceMappingURL=debugger.min.js.map

amd/build/util/debugger.min.js.map

@@ -1 +1 @@
-{"version":3,"file":"debugger.min.js","sources":["../../src/util/debugger.js"],"sourcesContent":["/*eslint no-var: \"error\"*/\n/*eslint no-console: \"off\"*/\n/*eslint-env es6*/\n\nimport Config from \"core/config\";\n\n/**\n * Start a new debugger\n * @param {*} handle The string to attach to all messages from this debugger\n * @returns Debugger object\n */\nexport default function (handle) {\n    let output_enabled = Config.developerdebug;\n    if(output_enabled){\n        console.warn(`In development environment. Debugger output enabled for ${handle}`);\n    } else {\n        console.warn(`In production environment. Debugger output disabled for ${handle}`);\n    }\n\n    return {\n        write() {\n            if (output_enabled) {\n                let args = Array.prototype.slice.call(arguments);\n                args.unshift(handle + \": \");\n                console.info.apply(console, args);\n            }\n        },\n        info() {\n            if (output_enabled) {\n                let args = Array.prototype.slice.call(arguments);\n                args.unshift(handle + \": \");\n                console.info.apply(console, args);\n            }\n        },\n        warn() {\n            if (output_enabled) {\n                let args = Array.prototype.slice.call(arguments);\n                args.unshift(handle + \": \");\n                console.warn.apply(console, args);\n            }\n        },\n        error() {\n            if (output_enabled) {\n                let args = Array.prototype.slice.call(arguments);\n                args.unshift(handle + \": \");\n                console.error.apply(console, args);\n            }\n        },\n        time() {\n            if (output_enabled) {\n                let args = Array.prototype.slice.call(arguments);\n                args.unshift(handle + \": \");\n                console.time.apply(console, args);\n            }\n        },\n        timeEnd() {\n            if (output_enabled) {\n                let args = Array.prototype.slice.call(arguments);\n                args.unshift(handle + \": \");\n                console.timeEnd.apply(console, args);\n            }\n        },\n        timeLog() {\n            if (output_enabled) {\n                let args = Array.prototype.slice.call(arguments);\n                args.unshift(handle + \": \");\n                console.timeLog.apply(console, args);\n            }\n        },\n        timeStamp() {\n            if (output_enabled) {\n                let args = Array.prototype.slice.call(arguments);\n                args.unshift(handle + \": \");\n                console.timeStamp.apply(console, args);\n            }\n        },\n        enable: function debugger_enable() {\n            output_enabled = true;\n        },\n\n        disable: function debugger_disable() {\n            output_enabled = false;\n        }\n    };\n\n}\n"],"names":["handle","output_enabled","Config","developerdebug","console","warn","write","args","Array","prototype","slice","call","arguments","unshift","info","apply","error","time","timeEnd","timeLog","timeStamp","enable","disable"],"mappings":"kMAWyBA,YACjBC,eAAiBC,gBAAOC,eACzBF,eACCG,QAAQC,KAAM,2DAA0DL,UAExEI,QAAQC,KAAM,2DAA0DL,gBAGrE,CACHM,WACQL,eAAgB,KACZM,KAAOC,MAAMC,UAAUC,MAAMC,KAAKC,WACtCL,KAAKM,QAAQb,OAAS,MACtBI,QAAQU,KAAKC,MAAMX,QAASG,QAGpCO,UACQb,eAAgB,KACZM,KAAOC,MAAMC,UAAUC,MAAMC,KAAKC,WACtCL,KAAKM,QAAQb,OAAS,MACtBI,QAAQU,KAAKC,MAAMX,QAASG,QAGpCF,UACQJ,eAAgB,KACZM,KAAOC,MAAMC,UAAUC,MAAMC,KAAKC,WACtCL,KAAKM,QAAQb,OAAS,MACtBI,QAAQC,KAAKU,MAAMX,QAASG,QAGpCS,WACQf,eAAgB,KACZM,KAAOC,MAAMC,UAAUC,MAAMC,KAAKC,WACtCL,KAAKM,QAAQb,OAAS,MACtBI,QAAQY,MAAMD,MAAMX,QAASG,QAGrCU,UACQhB,eAAgB,KACZM,KAAOC,MAAMC,UAAUC,MAAMC,KAAKC,WACtCL,KAAKM,QAAQb,OAAS,MACtBI,QAAQa,KAAKF,MAAMX,QAASG,QAGpCW,aACQjB,eAAgB,KACZM,KAAOC,MAAMC,UAAUC,MAAMC,KAAKC,WACtCL,KAAKM,QAAQb,OAAS,MACtBI,QAAQc,QAAQH,MAAMX,QAASG,QAGvCY,aACQlB,eAAgB,KACZM,KAAOC,MAAMC,UAAUC,MAAMC,KAAKC,WACtCL,KAAKM,QAAQb,OAAS,MACtBI,QAAQe,QAAQJ,MAAMX,QAASG,QAGvCa,eACQnB,eAAgB,KACZM,KAAOC,MAAMC,UAAUC,MAAMC,KAAKC,WACtCL,KAAKM,QAAQb,OAAS,MACtBI,QAAQgB,UAAUL,MAAMX,QAASG,QAGzCc,OAAQ,WACJpB,gBAAiB,GAGrBqB,QAAS,WACLrB,gBAAiB"}
+{"version":3,"file":"debugger.min.js","sources":["../../src/util/debugger.js"],"sourcesContent":["/*eslint no-var: \"error\"*/\n/*eslint no-console: \"off\"*/\n/*eslint-env es6*/\n\nimport Config from \"core/config\";\n\n/**\n * Start a new debugger\n * @param {*} handle The string to attach to all messages from this debugger\n * @returns Debugger object\n */\nexport default function (handle) {\n    let output_enabled = Config.developerdebug;\n    if(output_enabled){\n        console.warn(`In development environment. Debugger output enabled for ${handle}`);\n    } else {\n        console.warn(`In production environment. Debugger output disabled for ${handle}`);\n    }\n\n    return {\n        write() {\n            if (output_enabled) {\n                let args = Array.prototype.slice.call(arguments);\n                args.unshift(handle + \": \");\n                console.info.apply(console, args);\n            }\n        },\n        log() {\n            if (output_enabled) {\n                let args = Array.prototype.slice.call(arguments);\n                args.unshift(handle + \": \");\n                console.log.apply(console, args);\n            }\n        },\n        info() {\n            if (output_enabled) {\n                let args = Array.prototype.slice.call(arguments);\n                args.unshift(handle + \": \");\n                console.info.apply(console, args);\n            }\n        },\n        warn() {\n            if (output_enabled) {\n                let args = Array.prototype.slice.call(arguments);\n                args.unshift(handle + \": \");\n                console.warn.apply(console, args);\n            }\n        },\n        error() {\n            if (output_enabled) {\n                let args = Array.prototype.slice.call(arguments);\n                args.unshift(handle + \": \");\n                console.error.apply(console, args);\n            }\n        },\n        time() {\n            if (output_enabled) {\n                let args = Array.prototype.slice.call(arguments);\n                args.unshift(handle + \": \");\n                console.time.apply(console, args);\n            }\n        },\n        timeEnd() {\n            if (output_enabled) {\n                let args = Array.prototype.slice.call(arguments);\n                args.unshift(handle + \": \");\n                console.timeEnd.apply(console, args);\n            }\n        },\n        timeLog() {\n            if (output_enabled) {\n                let args = Array.prototype.slice.call(arguments);\n                args.unshift(handle + \": \");\n                console.timeLog.apply(console, args);\n            }\n        },\n        timeStamp() {\n            if (output_enabled) {\n                let args = Array.prototype.slice.call(arguments);\n                args.unshift(handle + \": \");\n                console.timeStamp.apply(console, args);\n            }\n        },\n        enable: function debugger_enable() {\n            output_enabled = true;\n        },\n\n        disable: function debugger_disable() {\n            output_enabled = false;\n        }\n    };\n\n}\n"],"names":["handle","output_enabled","Config","developerdebug","console","warn","write","args","Array","prototype","slice","call","arguments","unshift","info","apply","log","error","time","timeEnd","timeLog","timeStamp","enable","disable"],"mappings":"kMAWyBA,YACjBC,eAAiBC,gBAAOC,eACzBF,eACCG,QAAQC,KAAM,2DAA0DL,UAExEI,QAAQC,KAAM,2DAA0DL,gBAGrE,CACHM,WACQL,eAAgB,KACZM,KAAOC,MAAMC,UAAUC,MAAMC,KAAKC,WACtCL,KAAKM,QAAQb,OAAS,MACtBI,QAAQU,KAAKC,MAAMX,QAASG,QAGpCS,SACQf,eAAgB,KACZM,KAAOC,MAAMC,UAAUC,MAAMC,KAAKC,WACtCL,KAAKM,QAAQb,OAAS,MACtBI,QAAQY,IAAID,MAAMX,QAASG,QAGnCO,UACQb,eAAgB,KACZM,KAAOC,MAAMC,UAAUC,MAAMC,KAAKC,WACtCL,KAAKM,QAAQb,OAAS,MACtBI,QAAQU,KAAKC,MAAMX,QAASG,QAGpCF,UACQJ,eAAgB,KACZM,KAAOC,MAAMC,UAAUC,MAAMC,KAAKC,WACtCL,KAAKM,QAAQb,OAAS,MACtBI,QAAQC,KAAKU,MAAMX,QAASG,QAGpCU,WACQhB,eAAgB,KACZM,KAAOC,MAAMC,UAAUC,MAAMC,KAAKC,WACtCL,KAAKM,QAAQb,OAAS,MACtBI,QAAQa,MAAMF,MAAMX,QAASG,QAGrCW,UACQjB,eAAgB,KACZM,KAAOC,MAAMC,UAAUC,MAAMC,KAAKC,WACtCL,KAAKM,QAAQb,OAAS,MACtBI,QAAQc,KAAKH,MAAMX,QAASG,QAGpCY,aACQlB,eAAgB,KACZM,KAAOC,MAAMC,UAAUC,MAAMC,KAAKC,WACtCL,KAAKM,QAAQb,OAAS,MACtBI,QAAQe,QAAQJ,MAAMX,QAASG,QAGvCa,aACQnB,eAAgB,KACZM,KAAOC,MAAMC,UAAUC,MAAMC,KAAKC,WACtCL,KAAKM,QAAQb,OAAS,MACtBI,QAAQgB,QAAQL,MAAMX,QAASG,QAGvCc,eACQpB,eAAgB,KACZM,KAAOC,MAAMC,UAAUC,MAAMC,KAAKC,WACtCL,KAAKM,QAAQb,OAAS,MACtBI,QAAQiB,UAAUN,MAAMX,QAASG,QAGzCe,OAAQ,WACJrB,gBAAiB,GAGrBsB,QAAS,WACLtB,gBAAiB"}

amd/build/util/premium.min.js

@@ -1,3 +1,3 @@
-define("local_treestudyplan/util/premium",["exports","core/ajax","core/notification"],(function(_exports,_ajax,_notification){var obj;Object.defineProperty(_exports,"__esModule",{value:!0}),_exports.premiumenabled=function(){return!!premiumstatus().enabled},_notification=(obj=_notification)&&obj.__esModule?obj:{default:obj};let premiumstatus_cache=null;function premiumstatus(){return premiumstatus_cache||(0,_ajax.call)([{methodname:"local_treestudyplan_premiumstatus",args:{}}])[0].then((function(response){premiumstatus_cache=response})).catch(_notification.default.exception),premiumstatus_cache}premiumstatus()}));
+define("local_treestudyplan/util/premium",["exports","core/ajax","core/notification"],(function(_exports,_ajax,_notification){var obj;Object.defineProperty(_exports,"__esModule",{value:!0}),_exports.premiumenabled=function(){const premium=premiumstatus();return!premium||!!premium.enabled},_notification=(obj=_notification)&&obj.__esModule?obj:{default:obj};let premiumstatus_cache=null;function premiumstatus(){return premiumstatus_cache||(0,_ajax.call)([{methodname:"local_treestudyplan_premiumstatus",args:{}}])[0].then((function(response){premiumstatus_cache=response})).catch(_notification.default.exception),premiumstatus_cache}premiumstatus()}));
 
 //# sourceMappingURL=premium.min.js.map

amd/build/util/premium.min.js.map

@@ -1 +1 @@
-{"version":3,"file":"premium.min.js","sources":["../../src/util/premium.js"],"sourcesContent":["/*eslint no-var: \"error\" */\n/*eslint-env es6*/\n\nimport {call} from 'core/ajax';\nimport notification from 'core/notification';\n\n// Prepare default value.\nlet premiumstatus_cache = null;\n\n/**\n * Check if premium status is enabled.\n * @returns {Bool} True/False\n */\nexport function premiumenabled (){\n    const premium = premiumstatus();\n    return (premium.enabled)?true:false;\n}\n\n/**\n * Get premium status object\n * @returns {Object} The premium status object\n */\nfunction premiumstatus() {\n    if (!premiumstatus_cache) {\n        // Retrieve premium status if needed.\n        call([{\n            methodname: 'local_treestudyplan_premiumstatus',\n            args: {}\n        }])[0].then(function(response){\n            premiumstatus_cache = response;\n        }).catch(notification.exception);\n    }\n    return premiumstatus_cache;\n}\n\n// Preload premium status.\npremiumstatus();"],"names":["premiumstatus","enabled","premiumstatus_cache","methodname","args","then","response","catch","notification","exception"],"mappings":"yOAcoBA,gBACAC,iFARhBC,oBAAsB,cAejBF,uBACAE,oCAEI,CAAC,CACFC,WAAY,oCACZC,KAAM,MACN,GAAGC,MAAK,SAASC,UACjBJ,oBAAsBI,YACvBC,MAAMC,sBAAaC,WAEnBP,oBAIXF"}
+{"version":3,"file":"premium.min.js","sources":["../../src/util/premium.js"],"sourcesContent":["/*eslint no-var: \"error\" */\n/*eslint-env es6*/\n\nimport {call} from 'core/ajax';\nimport notification from 'core/notification';\n\n// Prepare default value.\nlet premiumstatus_cache = null;\n\n/**\n * Check if premium status is enabled.\n * @returns {Bool} True/False\n */\nexport function premiumenabled (){\n    const premium = premiumstatus();\n    if (premium) {\n        return (premium.enabled)?true:false;\n    } else {\n        return true; // Temporarily return true, that is easier than going full async.\n    }\n}\n\n/**\n * Get premium status object\n * @returns {Object} The premium status object\n */\nfunction premiumstatus() {\n    if (!premiumstatus_cache) {\n        // Retrieve premium status if needed.\n        call([{\n            methodname: 'local_treestudyplan_premiumstatus',\n            args: {}\n        }])[0].then(function(response){\n            premiumstatus_cache = response;\n        }).catch(notification.exception);\n    }\n    return premiumstatus_cache;\n}\n\n// Preload premium status.\npremiumstatus();"],"names":["premium","premiumstatus","enabled","premiumstatus_cache","methodname","args","then","response","catch","notification","exception"],"mappings":"uOAcUA,QAAUC,uBACZD,WACQA,QAAQE,iFATpBC,oBAAsB,cAmBjBF,uBACAE,oCAEI,CAAC,CACFC,WAAY,oCACZC,KAAM,MACN,GAAGC,MAAK,SAASC,UACjBJ,oBAAsBI,YACvBC,MAAMC,sBAAaC,WAEnBP,oBAIXF"}

amd/src/page-coach.js

@@ -15,6 +15,7 @@ import Debugger from './util/debugger';
 import {load_strings} from './util/string-helper';
 import {ProcessStudyplan} from './studyplan-processor';
 import {studyplanTiming} from './util/date-helper';
+import {addBrowserButtonEvent} from './util/browserbuttonevents';
 
 import EditorComponents from './studyplan-editor-components';
 Vue.use(EditorComponents);
@@ -50,6 +51,10 @@ export function init() {
     let app = new Vue({
         el: '#root',
         data: {
+            selected: {
+                planid: 0,
+                studentid: 0,
+            },
             displayedstudyplan: null,
             activestudyplan: null,
             associatedstudents: [],
@@ -88,32 +93,73 @@ export function init() {
                 const hash = window.location.hash.replace('#','');
                 const parts = hash.split("-");
 
-                if(!!parts && parts.length > 0){
+                if(!!parts && parts.length > 0 && parts[0] != ''){
                     for(let idx in app.studyplans){
                         if(app.studyplans[idx].id == parts[0]){
-                            app.selectStudyplan(app.studyplans[idx],parts[1]);
+                            app.selectStudyplan(app.studyplans[idx],parts[1],false);
                             break;
                         }
                     }
                 }
             }).catch(notification.exception);
+            addBrowserButtonEvent(this.navChanged, this.navChanged);
         },
         computed: {
         },
         methods: {
-            closeStudyplan() {
+            navChanged() {
+                const hash = window.location.hash.replace('#','');
+                const parts = hash.split("-");
+                debug.log("Navigation changed",hash,parts);
+
+                if(!!parts && parts.length > 0){
+                    const planid = Number(parts[0]);
+                    const studentid = (parts.length > 1)?Number(parts[1]):0;
+
+                    debug.log("Selected ids",planid,studentid,this.selected.planid,this.selected.studentid);
+                    if ( planid == 0) {
+                        if (planid != this.selected.planid) {
+                            this.closeStudyplan(false);
+                        }
+                    } else if ( this.selected.planid != planid || (studentid == 0 && this.selected.studentid != 0) ) {
+                        debug.info ("Requested plan changed - loading studyplan");
+                        for(let idx in app.studyplans){
+                            const plan = this.studyplans[idx];
+                            if(Number(plan.id) == planid){
+                                this.selectStudyplan(plan,studentid,false);
+                                break;
+                            }
+                        }
+                    } else if (this.selected.studentid != studentid) {
+                        for(const group of app.associatedstudents) {
+                            for(const student of group.users){
+                                if(Number(student.id) == studentid){
+                                    app.showStudentView(student,false);
+                                    break;
+                                }
+                            }
+                        }
+                    }
+                }
+            },
+            closeStudyplan(updatehash=true) {
+                app.selected.planid = 0;
+                app.selected.studentid = 0;
                 app.activestudyplan = null;
                 app.associatedstudents = [];
                 app.studentstudyplan = [];
                 app.displayedstudyplan = null;
-                window.location.hash = '';
+                if (updatehash) {
+                    window.location.hash = '';
+                }
             },
 
-            selectStudyplan(studyplan,studentid){
+            selectStudyplan(studyplan,studentid,updatehash=true){
+                app.selected.planid = Number(studyplan.id);
+                app.selected.studentid = studentid?Number(studentid):0;
                 // fetch studyplan
                 const self = this;
                 self.loadingstudyplan = true;
-                self.activestudyplan = null;
                 self.associatedstudents = [];
                 self.selectedstudent = null;
                 self.studentstudyplan = null;
@@ -122,32 +168,42 @@ export function init() {
                     args: { id: studyplan.id}
                 }])[0].then(function(response){
                     self.activestudyplan = ProcessStudyplan(response,true);
-                    self.displayedstudyplan = self.activestudyplan;
+
-                    self.loadingstudyplan = false;
-                    window.location.hash = self.activestudyplan.id;
                     call([{
                         methodname: 'local_treestudyplan_all_associated_grouped',
                         args: { studyplan_id: studyplan.id}
                     }])[0].then(function(response){
                         self.associatedstudents = response;
+                        let foundstudent = false;
                         if(studentid){
                             for(const group of self.associatedstudents) {
                                 for(const student of group.users){
                                     if(student.id == studentid){
+                                        foundstudent = true;
                                         self.showStudentView(student);
                                         break;
                                     }
                                 }
                             }
-                        } else {
+                        }
+                        if (!foundstudent) {
                             // Select first student available.
                             for(const group of self.associatedstudents) {
                                 for(const student of group.users){
+                                    foundstudent = true;
                                     self.showStudentView(student);
                                     break;
                                 }
                             }
                         }
+                        if (!foundstudent) { // update hash with just the studyplan if no student was available for display
+                            app.selected.studentid = 0;
+                            if (updatehash) {
+                                window.location.hash = app.activestudyplan.id;
+                            }
+                            self.displayedstudyplan = self.activestudyplan;
+                            self.loadingstudyplan = false;
+                        }
                     }).catch(notification.exception);
 
                 }).catch(function(error){
@@ -155,10 +211,11 @@ export function init() {
                     app.loadingstudyplan = false;
                 });
             },
-            showStudentView(student){
+            showStudentView(student,updatehash=true){
-                app.selectedstudent = student;
+                app.selected.studentid = student?Number(student.id):0;
-                app.studentstudyplan = null;
                 if (student) {
+                    app.selectedstudent = student;
+                    app.studentstudyplan = null;
                     app.loadingstudyplan = true;
                     call([{
                         methodname: 'local_treestudyplan_get_user_studyplan',
@@ -167,18 +224,26 @@ export function init() {
                         app.studentstudyplan = ProcessStudyplan(response,false);
                         app.displayedstudyplan = app.studentstudyplan;
                         app.loadingstudyplan = false;
-                        window.location.hash = app.activestudyplan.id + "-" + student.id;
+                        if (updatehash) {
+                            window.location.hash = app.activestudyplan.id + "-" + student.id;
+                        }
                     }).catch(function(error){
                         notification.exception(error);
                         app.loadingstudyplan = false;
                     });
+                } else {
+                    this.showOverview(updatehash);
                 }
             },
-            showOverview(){
+            showOverview(updatehash=true){
+                debug.info("Switch to overview",updatehash);
+                app.selected.studentid = 0;
                 app.selectedstudent = null;
                 app.studentstudyplan = null;
                 app.displayedstudyplan = app.activestudyplan;
-                window.location.hash = app.activestudyplan.id;
+                if (updatehash) {
+                    window.location.hash = app.activestudyplan.id;
+                }
             }
 
         },

amd/src/page-edit-plan.js

@@ -23,6 +23,7 @@ Vue.use(TSComponents);
 import ModalComponents from './modedit-modal';
 Vue.use(ModalComponents);
 import Debugger from './util/debugger';
+import {addBrowserButtonEvent} from './util/browserbuttonevents';
 
 import {load_strings} from './util/string-helper';
 import {ProcessStudyplan} from './studyplan-processor';
@@ -133,6 +134,10 @@ export function init(contextid,categoryid,options) {
         },
         mounted() {
             this.initialize();
+            addBrowserButtonEvent(this.backPressed);
+        },
+        beforeunmount() {
+
         },
         computed: {
             premiumenabled,
@@ -150,6 +155,13 @@ export function init(contextid,categoryid,options) {
 
         },
         methods: {
+            backPressed() {
+                debug.log("Back button pressed");
+                if (app.activestudyplan) {
+                    debug.log("Closing studyplan");
+                    this.closeStudyplan();
+                }
+            },
             initialize() {
                 call([{
                     methodname: 'local_treestudyplan_list_studyplans',

amd/src/page-view-plan.js

@@ -15,6 +15,7 @@ import Debugger from './util/debugger';
 import {load_strings} from './util/string-helper';
 import {ProcessStudyplan} from './studyplan-processor';
 import {studyplanTiming} from './util/date-helper';
+import {addBrowserButtonEvent} from './util/browserbuttonevents';
 
 import RVComponents from './report-viewer-components';
 Vue.use(RVComponents);
@@ -53,6 +54,10 @@ export function init(contextid,categoryid) {
     let app = new Vue({
         el: '#root',
         data: {
+            selected: {
+                planid: 0,
+                studentid: 0,
+            },
             displayedstudyplan: null,
             activestudyplan: null,
             associatedstudents: [],
@@ -90,7 +95,7 @@ export function init(contextid,categoryid) {
                 const hash = window.location.hash.replace('#','');
                 const parts = hash.split("-");
 
-                if(!!parts && parts.length > 0){
+                if(!!parts && parts.length > 0 && parts[0] != ''){
                     for(let idx in app.studyplans){
                         if(app.studyplans[idx].id == parts[0]){
                             app.selectStudyplan(app.studyplans[idx],parts[1]);
@@ -112,6 +117,7 @@ export function init(contextid,categoryid) {
                 }
                 app.usedcontexts = contexts;
             }).catch(notification.exception);
+            addBrowserButtonEvent(this.navChanged, this.navChanged);
         },
         computed: {
             dropdown_title(){
@@ -127,6 +133,41 @@ export function init(contextid,categoryid) {
             }
         },
         methods: {
+            navChanged() {
+                const hash = window.location.hash.replace('#','');
+                const parts = hash.split("-");
+                debug.log("Navigation changed",hash,parts);
+
+                if(!!parts && parts.length > 0){
+                    const planid = Number(parts[0]);
+                    const studentid = (parts.length > 1)?Number(parts[1]):0;
+
+                    debug.log("Selected ids",planid,studentid,this.selected.planid,this.selected.studentid);
+                    if ( planid == 0) {
+                        if (planid != this.selected.planid) {
+                            this.closeStudyplan(false);
+                        }
+                    } else if ( this.selected.planid != planid || (studentid == 0 && this.selected.studentid != 0) ) {
+                        debug.info ("Requested plan changed - loading studyplan");
+                        for(let idx in app.studyplans){
+                            const plan = this.studyplans[idx];
+                            if(Number(plan.id) == planid){
+                                this.selectStudyplan(plan,studentid,false);
+                                break;
+                            }
+                        }
+                    } else if (this.selected.studentid != studentid) {
+                        for(const group of app.associatedstudents) {
+                            for(const student of group.users){
+                                if(Number(student.id) == studentid){
+                                    app.showStudentView(student,false);
+                                    break;
+                                }
+                            }
+                        }
+                    }
+                } 
+            },
             switchContext(ctxid){
                 const params = new URLSearchParams(location.search);
                 params.delete('categoryid');
@@ -136,18 +177,23 @@ export function init(contextid,categoryid) {
                     window.location.href = window.location.pathname + "?" + params.toString();
                 },50);
             },
-            closeStudyplan() {
+            closeStudyplan(updatehash=true) {
+                app.selected.planid = 0;
+                app.selected.studentid = 0;
                 app.activestudyplan = null;
                 app.associatedstudents = [];
                 app.studentstudyplan = [];
                 app.displayedstudyplan = null;
-                window.location.hash = '';
+                if (updatehash) {
+                    window.location.hash = '';
+                }
             },
 
-            selectStudyplan(studyplan,studentid){
+            selectStudyplan(studyplan,studentid,updatehash=true){
+                app.selected.planid = Number(studyplan.id);
+                app.selected.studentid = studentid?Number(studentid):0;
                 // fetch studyplan
                 app.loadingstudyplan = true;
-                app.activestudyplan = null;
                 app.associatedstudents = [];
                 app.selectedstudent = null;
                 app.studentstudyplan = null;
@@ -156,24 +202,32 @@ export function init(contextid,categoryid) {
                     args: { id: studyplan.id}
                 }])[0].then(function(response){
                     app.activestudyplan = ProcessStudyplan(response,true);
-                    app.displayedstudyplan = app.activestudyplan;
+                    
-                    app.loadingstudyplan = false;
-                    window.location.hash = app.activestudyplan.id;
                     call([{
                         methodname: 'local_treestudyplan_all_associated_grouped',
                         args: { studyplan_id: studyplan.id}
                     }])[0].then(function(response){
                         app.associatedstudents = response;
+                        let foundstudent = false;
                         if(studentid){
                             for(const group of app.associatedstudents) {
                                 for(const student of group.users){
                                     if(student.id == studentid){
-                                        app.showStudentView(student);
+                                        foundstudent = true;
+                                        app.showStudentView(student,updatehash);
                                         break;
                                     }
                                 }
                             }
                         }
+                        if (!foundstudent) {
+                            app.selected.studentid = 0;
+                            if (updatehash) {
+                                window.location.hash = app.activestudyplan.id;
+                            }
+                            app.displayedstudyplan = app.activestudyplan;
+                            app.loadingstudyplan = false;
+                        }
                     }).catch(notification.exception);
 
                 }).catch(function(error){
@@ -181,30 +235,38 @@ export function init(contextid,categoryid) {
                     app.loadingstudyplan = false;
                 });
             },
-            showStudentView(student){
+            showStudentView(student,updatehash=true){
-                app.selectedstudent = student;
+                app.selected.studentid = student?Number(student.id):0;
-                app.studentstudyplan = null;
                 if (student) {
+                    app.selectedstudent = student;
+                    app.studentstudyplan = null;
                     app.loadingstudyplan = true;
                     call([{
                         methodname: 'local_treestudyplan_get_user_studyplan',
-                        args: { userid: student.id, studyplanid: app.activestudyplan.id}
+                        args: { userid: student.id, studyplanid: app.selected.planid}
                     }])[0].then(function(response){
                         app.studentstudyplan = ProcessStudyplan(response,false);
                         app.displayedstudyplan = app.studentstudyplan;
                         app.loadingstudyplan = false;
-                        window.location.hash = app.activestudyplan.id + "-" + student.id;
+                        if (updatehash) {
+                            window.location.hash = app.activestudyplan.id + "-" + student.id;
+                        }
                     }).catch(function(error){
                         notification.exception(error);
                         app.loadingstudyplan = false;
                     });
+                } else {
+                    this.showOverview(updatehash);
                 }
             },
-            showOverview(){
+            showOverview(updatehash=true){
+                app.selected.studentid = 0;
                 app.selectedstudent = null;
                 app.studentstudyplan = null;
                 app.displayedstudyplan = app.activestudyplan;
-                window.location.hash = app.activestudyplan.id;
+                if (updatehash) {
+                    window.location.hash = app.activestudyplan.id;
+                }
             }
 
         },

amd/src/report-viewer-components.js

@@ -10,6 +10,7 @@ import {SimpleLine} from './simpleline/simpleline';
 import {get_strings} from 'core/str';
 import {load_strings} from './util/string-helper';
 import {format_date, format_datetime, studyplanPageTiming,studyplanTiming} from './util/date-helper';
+import {addBrowserButtonEvent} from './util/browserbuttonevents';
 import {call} from 'core/ajax';
 import notification from 'core/notification';
 import {svgarcpath} from './util/svgarc';
@@ -384,9 +385,17 @@ export default {
             },
             mounted() {
                 this.loadStudyplans();
+                addBrowserButtonEvent(this.backPressed);
             },
 
             methods: {
+                backPressed() {
+                    debug.log("Back button pressed");
+                    if (this.selectedstudyplan) {
+                        debug.log("Closing studyplan");
+                        this.deselectStudyplan();
+                    }
+                },
                 call_args(o) {
                     const args = {};
                     if (typeof o == 'object' && !Array.isArray(o) && o !== null) {

amd/src/util/browserbuttonevents.js

@@ -0,0 +1,49 @@
+/*eslint no-var: "error" */
+/*eslint no-unused-vars: "off" */
+/*eslint linebreak-style: "off" */
+/*eslint no-trailing-spaces: "off" */
+/*eslint-env es6*/
+
+import Debugger from './debugger';
+const debug = new Debugger("browserbuttonevents");
+
+/**
+ * 
+ * @param {function} backwardCB 
+ * @param {function} forwardCB 
+ * @param {function} reloadCB 
+ */
+export function addBrowserButtonEvent(backwardCB, forwardCB = null, reloadCB = null) {
+    debug.log("Registering navigation events",backwardCB,forwardCB,reloadCB);
+    const reorient = (e) => { // After travelling in the history stack
+        const positionLastShown = Number( // If none, then zero
+          sessionStorage.getItem( 'positionLastShown' ));
+//        debug.log("Popstate event",e,positionLastShown,history);
+        let position = history.state; // Absolute position in stack
+        if( position === null ) { // Meaning a new entry on the stack
+            position = positionLastShown + 1; // Top of stack
+    
+            // (1) Stamp the entry with its own position in the stack
+            history.replaceState( position, /*no title*/'' ); 
+        }
+    
+        // (2) Keep track of the last position shown
+        sessionStorage.setItem( 'positionLastShown', String(position) );
+    
+        // (3) Discover the direction of travel by comparing the two
+        const direction = Math.sign( position - positionLastShown );
+        debug.log( 'Travel direction is ' + direction ); 
+          // One of backward (-1), reload (0) and forward (1)
+        if (direction == -1 && backwardCB) {
+            backwardCB();
+        }
+        if (direction == 1 && forwardCB) {
+            forwardCB();
+        }
+        if (direction == 0 && reloadCB) {
+            reloadCB();
+        }
+    };
+    //addEventListener( 'pageshow', reorient );
+    addEventListener( 'popstate', reorient ); // Travel in same page
+}

amd/src/util/debugger.js

@@ -25,6 +25,13 @@ export default function (handle) {
                 console.info.apply(console, args);
             }
         },
+        log() {
+            if (output_enabled) {
+                let args = Array.prototype.slice.call(arguments);
+                args.unshift(handle + ": ");
+                console.log.apply(console, args);
+            }
+        },
         info() {
             if (output_enabled) {
                 let args = Array.prototype.slice.call(arguments);

amd/src/util/premium.js

@@ -13,7 +13,11 @@ let premiumstatus_cache = null;
  */
 export function premiumenabled (){
     const premium = premiumstatus();
-    return (premium.enabled)?true:false;
+    if (premium) {
+        return (premium.enabled)?true:false;
+    } else {
+        return true; // Temporarily return true, that is easier than going full async.
+    }
 }
 
 /**

version.php

@@ -22,7 +22,7 @@
 defined('MOODLE_INTERNAL') || die();
 
 $plugin->component = 'local_treestudyplan';  // Recommended since 2.0.2 (MDL-26035). Required since 3.0 (MDL-48494).
-$plugin->version = 2024053103;  // YYYYMMDDHH (year, month, day, iteration).
+$plugin->version = 2024060200;  // YYYYMMDDHH (year, month, day, iteration).
 $plugin->requires = 2021051700; // YYYYMMDDHH (This is the release version for Moodle 3.11).
 
 $plugin->release = "1.3.0";