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