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): boolean {
  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) {
  38       active.focus();
  39       return true;
  40     }
  41     return false;
  42   },
  43 };
  44
  45 const Log = (function () {
  46   var next_log_index = 0;
  47   return {
  48     apply: function (entry: string) {
  49       const [timestamp, command, data] = splitN(entry, " ", 2);
  50       if (command == "Create") {
  51         Model.addTask(timestamp, data);
  52       }
  53     },
  54
  55     record: function (entry: string) {
  56       window.localStorage.setItem(`${next_log_index++}`, entry);
  57     },
  58
  59     recordAndApply: function (entry: string) {
  60       this.record(entry);
  61       this.apply(entry);
  62     },
  63
  64     replay: function () {
  65       while (true) {
  66         const entry = window.localStorage.getItem(`${next_log_index}`);
  67         if (entry === null) {
  68           break;
  69         }
  70         this.apply(entry);
  71         next_log_index++;
  72       }
  73     },
  74   };
  75 })();
  76
  77 const UI = {
  78   addTask: function (description: string) {
  79     Log.recordAndApply(`${Date.now()} Create ${description}`);
  80   },
  81 };
  82
  83 const BrowserUI = {
  84   addTask: function (form: any) {
  85     if (form.taskName.value) {
  86       UI.addTask(form.taskName.value);
  87       form.taskName.value = "";
  88     }
  89     return false;
  90   },
  91 };
  92
  93 function focusTaskNameInput(event: any) {
  94   document.getElementById("taskName")!.focus();
  95   event.preventDefault();
  96 }
  97
  98 function handleKey(event: any) {
  99   if (event.target.tagName !== "INPUT") {
 100     if (event.key == "j") return Model.moveCursor(1);
 101     if (event.key == "k") return Model.moveCursor(-1);
 102     if (event.key == "c") return focusTaskNameInput(event);
 103   }
 104 }
 105
 106 function browserInit() {
 107   document.body.addEventListener("keydown", handleKey, { capture: false });
 108   Log.replay();
 109 }