"G" to Go to the count-prefixed line. eg: "1G" to go to the top

[vopamoi] / vopamoi.ts

diff --git a/vopamoi.ts b/vopamoi.ts
index 24b8774a4225036243e3fac4aaf81e9e5c791bc0..7d2f3ee425c60665455ac5eb1e413ebd1ed32ce3 100644 (file)
--- a/vopamoi.ts
+++ b/vopamoi.ts
@@ -215,36 +215,45 @@ function Log(prefix: string = "vp-") {
 const log = Log();
 
 function UI() {
-  const undoLog: string[] = [];
+  const undoLog: string[][] = [];
+  const redoLog: string[][] = [];
+  function perform(forward: string, reverse: string) {
+    undoLog.push([reverse, forward]);
+    return log.recordAndApply(`${clock.now()} ${forward}`);
+  }
   return {
     addTask: function (description: string): Element {
       const now = clock.now();
-      undoLog.push(`State ${now} deleted`);
+      undoLog.push([`State ${now} deleted`, `State ${now} todo`]);
       return <Element>log.recordAndApply(`${now} Create ${description}`);
     },
     addTag: function (createTimestamp: string, tag: string) {
-      undoLog.push(`Untag ${createTimestamp} ${tag}`);
-      return log.recordAndApply(`${clock.now()} Tag ${createTimestamp} ${tag}`);
+      return perform(`Tag ${createTimestamp} ${tag}`, `Untag ${createTimestamp} ${tag}`);
     },
     edit: function (createTimestamp: string, newDescription: string, oldDescription: string) {
-      undoLog.push(`Edit ${createTimestamp} ${oldDescription}`);
-      return log.recordAndApply(`${clock.now()} Edit ${createTimestamp} ${newDescription}`);
+      return perform(`Edit ${createTimestamp} ${newDescription}`, `Edit ${createTimestamp} ${oldDescription}`);
     },
     removeTag: function (createTimestamp: string, tag: string) {
-      undoLog.push(`Tag ${createTimestamp} ${tag}`);
-      return log.recordAndApply(`${clock.now()} Untag ${createTimestamp} ${tag}`);
+      return perform(`Untag ${createTimestamp} ${tag}`, `Tag ${createTimestamp} ${tag}`);
     },
     setPriority: function (createTimestamp: string, newPriority: number, oldPriority: number) {
-      undoLog.push(`Priority ${createTimestamp} ${oldPriority}`);
-      return log.recordAndApply(`${clock.now()} Priority ${createTimestamp} ${newPriority}`);
+      return perform(`Priority ${createTimestamp} ${newPriority}`, `Priority ${createTimestamp} ${oldPriority}`);
     },
     setState: function (createTimestamp: string, newState: string, oldState: string) {
-      undoLog.push(`State ${createTimestamp} ${oldState}`);
-      return log.recordAndApply(`${clock.now()} State ${createTimestamp} ${newState}`);
+      return perform(`State ${createTimestamp} ${newState}`, `State ${createTimestamp} ${oldState}`);
     },
     undo: function () {
-      if (undoLog.length > 0) {
-        return log.recordAndApply(`${clock.now()} ${undoLog.pop()}`);
+      const entry = undoLog.pop();
+      if (entry) {
+        redoLog.push(entry);
+        return log.recordAndApply(`${clock.now()} ${entry[0]}`);
+      }
+    },
+    redo: function () {
+      const entry = redoLog.pop();
+      if (entry) {
+        undoLog.push(entry);
+        return log.recordAndApply(`${clock.now()} ${entry[1]}`);
       }
     },
   };
@@ -369,6 +378,13 @@ function BrowserUI() {
       return valid_cursor;
     },
 
+    jumpCursor: function (position: number) {
+      const first = this.firstVisibleTask();
+      if (!first) return;
+      const dest = this.visibleTaskAtOffset(first, position - 1);
+      if (dest instanceof HTMLElement) dest.focus();
+    },
+
     makeTopPriority: function (task: Element | null = null) {
       if (!task) task = document.activeElement;
       if (!task) return;
@@ -465,6 +481,10 @@ function BrowserUI() {
       const ret = ui.undo();
       if (ret && ret instanceof HTMLElement) ret.focus();
     },
+    redo: function () {
+      const ret = ui.redo();
+      if (ret && ret instanceof HTMLElement) ret.focus();
+    },
   };
 }
 const browserUI = BrowserUI();
@@ -476,8 +496,10 @@ enum InputState {
   VS,
 }
 var inputState = InputState.Root;
+var inputCount: number | null = null;
 
 function handleKey(event: any) {
+  if (["Alt", "Control", "Meta", "Shift"].includes(event.key)) return;
   if (event.target.tagName === "INPUT") {
     if (event.target.id === "taskName") {
       if (event.key == "Enter") return browserUI.addTask(event);
@@ -491,23 +513,32 @@ function handleKey(event: any) {
     }
   } else {
     if (inputState === InputState.Root) {
-      if (event.key == "j") return browserUI.moveCursor(1);
-      if (event.key == "k") return browserUI.moveCursor(-1);
-      if (event.key == "J") return browserUI.moveTask(1);
-      if (event.key == "K") return browserUI.moveTask(-1);
-      if (event.key == "T") return browserUI.makeTopPriority();
-      if (event.key == "n") return browserUI.focusTaskNameInput(event);
-      if (event.key == "c") return browserUI.setState("cancelled");
-      if (event.key == "d") return browserUI.setState("done");
-      if (event.key == "q") return browserUI.setState("todo");
-      if (event.key == "s") return (inputState = InputState.S);
-      if (event.key == "w") return browserUI.setState("waiting");
-      if (event.key == "X") return browserUI.setState("deleted");
-      if (event.key == "x") return browserUI.removeTag();
-      if (event.key == "u") return browserUI.undo();
-      if (event.key == "e") return browserUI.beginEdit(event);
-      if (event.key == "t") return browserUI.beginTagEdit(event);
-      if (event.key == "v") return (inputState = InputState.V);
+      if ("0" <= event.key && event.key <= "9") {
+        return (inputCount = (inputCount ?? 0) * 10 + parseInt(event.key));
+      }
+      try {
+        if (event.key == "j") return browserUI.moveCursor(inputCount ?? 1);
+        if (event.key == "k") return browserUI.moveCursor(-(inputCount ?? 1));
+        if (event.key == "J") return browserUI.moveTask(inputCount ?? 1);
+        if (event.key == "K") return browserUI.moveTask(-(inputCount ?? 1));
+        if (event.key == "G") return browserUI.jumpCursor(inputCount ?? MAX_SAFE_INTEGER);
+        if (event.key == "T") return browserUI.makeTopPriority();
+        if (event.key == "n") return browserUI.focusTaskNameInput(event);
+        if (event.key == "c") return browserUI.setState("cancelled");
+        if (event.key == "d") return browserUI.setState("done");
+        if (event.key == "q") return browserUI.setState("todo");
+        if (event.key == "s") return (inputState = InputState.S);
+        if (event.key == "w") return browserUI.setState("waiting");
+        if (event.key == "X") return browserUI.setState("deleted");
+        if (event.key == "x") return browserUI.removeTag();
+        if (event.key == "u") return browserUI.undo();
+        if (event.key == "r") return browserUI.redo();
+        if (event.key == "e") return browserUI.beginEdit(event);
+        if (event.key == "t") return browserUI.beginTagEdit(event);
+        if (event.key == "v") return (inputState = InputState.V);
+      } finally {
+        inputCount = null;
+      }
     } else if (inputState === InputState.S) {
       inputState = InputState.Root;
       if (event.key == "m") return browserUI.setState("someday-maybe");