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 (description: string) {
  18     const task = document.createElement("div");
  19     task.appendChild(document.createTextNode(description));
  20     task.setAttribute("tabindex", "0");
  21     return task;
  22   },
  23
  24   addTask: function (description: string) {
  25     document.body.appendChild(this.createTask(description)).focus();
  26   },
  27
  28   moveCursor: function (offset: number) {
  29     var active = document.activeElement;
  30     if (offset === 1 && active) {
  31       active = active.nextElementSibling;
  32     }
  33     if (offset === -1 && active) {
  34       active = active.previousElementSibling;
  35     }
  36     if (active && active instanceof HTMLElement) active.focus();
  37   },
  38 };
  39
  40 const Log = (function () {
  41   var next_log_index = 0;
  42   return {
  43     apply: function (entry: string) {
  44       const [timestamp, command, data] = splitN(entry, " ", 2);
  45       if (command == "Create") {
  46         Model.addTask(data);
  47       }
  48     },
  49
  50     record: function (entry: string) {
  51       window.localStorage.setItem(`${next_log_index++}`, entry);
  52     },
  53
  54     recordAndApply: function (entry: string) {
  55       this.record(entry);
  56       this.apply(entry);
  57     },
  58
  59     replay: function () {
  60       while (true) {
  61         const entry = window.localStorage.getItem(`${next_log_index}`);
  62         if (entry === null) {
  63           break;
  64         }
  65         this.apply(entry);
  66         next_log_index++;
  67       }
  68     },
  69   };
  70 })();
  71
  72 const UI = {
  73   addTask: function (description: string) {
  74     Log.recordAndApply(`${Date.now()} Create ${description}`);
  75   },
  76 };
  77
  78 function focusTaskNameInput(event: any) {
  79   document.getElementById("taskName")!.focus();
  80   event.preventDefault();
  81 }
  82
  83 function handleKey(event: any) {
  84   if (event.target.tagName !== "INPUT") {
  85     if (event.key == "j") return Model.moveCursor(1);
  86     if (event.key == "k") return Model.moveCursor(-1);
  87     if (event.key == "c") return focusTaskNameInput(event);
  88   }
  89 }
  90
  91 function browserCreateTask(form: any) {
  92   if (form.taskName.value) {
  93     UI.addTask(form.taskName.value);
  94   }
  95   form.taskName.value = "";
  96   return false;
  97 }
  98
  99 function browserInit() {
 100   document.body.addEventListener("keydown", handleKey, { capture: false });
 101   Log.replay();
 102 }