git.scottworley.com Git - vopamoi/blob - vopamoi.ts

   1 // Typescript doesn't know about MAX_SAFE_INTEGER??  This was supposed to be
   2 // fixed in typescript 2.0.1 in 2016, but is not working for me in typescript
   3 // 4.2.4 in 2022.  :( https://github.com/microsoft/TypeScript/issues/9937
   4 //const MAX_SAFE_INTEGER = Number.MAX_SAFE_INTEGER;
   5 const MAX_SAFE_INTEGER = 9007199254740991;
   6
   7 // A sane split that splits N *times*, leaving the last chunk unsplit.
   8 function splitN(str: string, delimiter: string, limit: number = MAX_SAFE_INTEGER): string[] {
   9   if (limit < 1) {
  10     return [str];
  11   }
  12   const at = str.indexOf(delimiter);
  13   return at === -1 ? [str] : [str.substring(0, at)].concat(splitN(str.substring(at + delimiter.length), delimiter, limit - 1));
  14 }
  15
  16 const Model = {
  17   createTask: function (timestamp: string, description: string) {
  18     const task = document.createElement("div");
  19     task.appendChild(document.createTextNode(description));
  20     task.setAttribute("tabindex", "0");
  21     task.setAttribute("data-created", timestamp);
  22     return task;
  23   },
  24
  25   addTask: function (timestamp: string, description: string) {
  26     document.body.appendChild(this.createTask(timestamp, description)).focus();
  27   },
  28
  29   moveCursor: function (offset: number) {
  30     var active = document.activeElement;
  31     if (offset === 1 && active) {
  32       active = active.nextElementSibling;
  33     }
  34     if (offset === -1 && active) {
  35       active = active.previousElementSibling;
  36     }
  37     if (active && active instanceof HTMLElement) active.focus();
  38   },
  39 };
  40
  41 const Log = (function () {
  42   var next_log_index = 0;
  43   return {
  44     apply: function (entry: string) {
  45       const [timestamp, command, data] = splitN(entry, " ", 2);
  46       if (command == "Create") {
  47         Model.addTask(timestamp, data);
  48       }
  49     },
  50
  51     record: function (entry: string) {
  52       window.localStorage.setItem(`${next_log_index++}`, entry);
  53     },
  54
  55     recordAndApply: function (entry: string) {
  56       this.record(entry);
  57       this.apply(entry);
  58     },
  59
  60     replay: function () {
  61       while (true) {
  62         const entry = window.localStorage.getItem(`${next_log_index}`);
  63         if (entry === null) {
  64           break;
  65         }
  66         this.apply(entry);
  67         next_log_index++;
  68       }
  69     },
  70   };
  71 })();
  72
  73 const UI = {
  74   addTask: function (description: string) {
  75     Log.recordAndApply(`${Date.now()} Create ${description}`);
  76   },
  77 };
  78
  79 function focusTaskNameInput(event: any) {
  80   document.getElementById("taskName")!.focus();
  81   event.preventDefault();
  82 }
  83
  84 function handleKey(event: any) {
  85   if (event.target.tagName !== "INPUT") {
  86     if (event.key == "j") return Model.moveCursor(1);
  87     if (event.key == "k") return Model.moveCursor(-1);
  88     if (event.key == "c") return focusTaskNameInput(event);
  89   }
  90 }
  91
  92 function browserCreateTask(form: any) {
  93   if (form.taskName.value) {
  94     UI.addTask(form.taskName.value);
  95   }
  96   form.taskName.value = "";
  97   return false;
  98 }
  99
 100 function browserInit() {
 101   document.body.addEventListener("keydown", handleKey, { capture: false });
 102   Log.replay();
 103 }