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 = {
  41   addTask: function (description: string) {
  42     this.applyLogEntry(`${Date.now()} Create ${description}`);
  43   },
  44
  45   applyLogEntry: function (entry: string) {
  46     const [timestamp, command, data] = splitN(entry, " ", 2);
  47     if (command == "Create") {
  48       Model.addTask(data);
  49     }
  50   },
  51 };
  52
  53 function handleKey(event: any) {
  54   if (event.target.tagName !== "INPUT") {
  55     if (event.key == "j") Model.moveCursor(1);
  56     if (event.key == "k") Model.moveCursor(-1);
  57     if (event.key == "c") {
  58       document.getElementById("taskName")!.focus();
  59       event.preventDefault();
  60     }
  61   }
  62 }
  63
  64 function browserCreateTask(form: any) {
  65   if (form.taskName.value) {
  66     Log.addTask(form.taskName.value);
  67   }
  68   form.taskName.value = "";
  69   return false;
  70 }
  71
  72 function browserInit() {
  73   document.body.addEventListener("keydown", handleKey, { capture: false });
  74 }