X-Git-Url: http://git.scottworley.com/vopamoi/blobdiff_plain/cddbdce1bb49d2568668fccc788c8356012b3fe2..32808c9a5b8154746bf98339e58ed827c399a9d3:/vopamoi.ts?ds=inline

diff --git a/vopamoi.ts b/vopamoi.ts
index 24b8774..a114959 100644
--- a/vopamoi.ts
+++ b/vopamoi.ts
@@ -46,7 +46,8 @@ const Model = {
     task.setAttribute("tabindex", "0");
     task.setAttribute("data-created", timestamp);
     task.setAttribute("data-state", "todo");
-    document.getElementById("tasks")!.appendChild(task);
+    const tasks = document.getElementById("tasks")!;
+    tasks.insertBefore(task, tasks.firstElementChild);
     return task;
   },
 
@@ -133,7 +134,7 @@ const Model = {
     if (!target) return null;
     target.setAttribute("data-priority", `${priority}`);
     for (const task of document.getElementsByClassName("task")) {
-      if (task !== target && this.getPriority(task) > priority) {
+      if (task !== target && this.getPriority(task) < priority) {
         task.parentElement!.insertBefore(target, task);
         return target;
       }
@@ -215,36 +216,45 @@ 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]}`);
       }
     },
   };
@@ -257,6 +267,15 @@ enum CommitOrAbort {
 }
 
 function BrowserUI() {
+  const viewColors: { [key: string]: string } = {
+    all: "Gold",
+    cancelled: "Red",
+    deleted: "Black",
+    done: "LawnGreen",
+    "someday-maybe": "DeepSkyBlue",
+    todo: "White",
+    waiting: "MediumOrchid",
+  };
   var currentViewState = "todo";
   var taskFocusedBeforeJumpingToInput: HTMLElement | null = null;
   var lastTagNameEntered = "";
@@ -273,12 +292,12 @@ function BrowserUI() {
       }
       input.value = "";
       if (event.getModifierState("Control")) {
-        this.makeTopPriority(task);
+        this.makeBottomPriority(task);
       }
     },
 
     beginEdit: function (event: Event) {
-      const task = document.activeElement;
+      const task = this.currentTask();
       if (!task) return;
       const input = document.createElement("input");
       const desc = task.getElementsByClassName("desc")[0];
@@ -293,7 +312,7 @@ function BrowserUI() {
     },
 
     beginTagEdit: function (event: Event) {
-      const task = document.activeElement;
+      const task = this.currentTask();
       if (!task) return;
       const input = document.createElement("input");
       input.classList.add("tag");
@@ -335,20 +354,41 @@ function BrowserUI() {
       }
     },
 
+    currentTag: function (): Element | null {
+      var target = document.activeElement;
+      if (!target) return null;
+      if (target.classList.contains("task")) {
+        const tags = target.getElementsByClassName("tag");
+        target = tags[tags.length - 1];
+      }
+      if (!target || !target.classList.contains("tag")) return null;
+      return target;
+    },
+
+    currentTask: function (): HTMLElement | null {
+      var target = document.activeElement;
+      if (!target) return null;
+      if (target.classList.contains("tag")) target = target.parentElement!;
+      return target as HTMLElement;
+    },
+
     firstVisibleTask: function () {
       for (const task of document.getElementsByClassName("task")) {
         const state = task.getAttribute("data-state");
-        if (task instanceof HTMLElement && (state === currentViewState || (currentViewState === "all" && state !== "deleted"))) {
+        if (
+          task instanceof HTMLElement &&
+          (state === currentViewState || (currentViewState === "all" && state !== "deleted")) &&
+          !task.classList.contains("hide")
+        ) {
           return task;
         }
       }
     },
 
     focusTaskNameInput: function (event: Event) {
-      if (document.activeElement instanceof HTMLElement) {
-        taskFocusedBeforeJumpingToInput = document.activeElement;
-      }
+      taskFocusedBeforeJumpingToInput = this.currentTask();
       document.getElementById("taskName")!.focus();
+      window.scroll(0, 0);
       event.preventDefault();
     },
 
@@ -360,7 +400,10 @@ function BrowserUI() {
         cursor = increment > 0 ? cursor.nextElementSibling : cursor.previousElementSibling;
         if (!cursor || !(cursor instanceof HTMLElement)) break;
         const state = cursor.getAttribute("data-state")!;
-        if (state === currentViewState || (currentViewState === "all" && state !== "deleted")) {
+        if (
+          (state === currentViewState || (currentViewState === "all" && state !== "deleted")) &&
+          !cursor.classList.contains("hide")
+        ) {
           offset -= increment;
           valid_cursor = cursor;
         }
@@ -369,14 +412,28 @@ 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();
+    },
+
+    makeBottomPriority: function (task: Element | null = null) {
+      if (!task) task = this.currentTask();
+      if (!task) return;
+      this.setPriority(task, document.getElementById("tasks")!.lastElementChild, null);
+    },
+
     makeTopPriority: function (task: Element | null = null) {
-      if (!task) task = document.activeElement;
+      if (!task) task = this.currentTask();
       if (!task) return;
-      this.setPriority(task, null, document.getElementsByClassName("task")[0]);
+      ui.setPriority(task.getAttribute("data-created")!, clock.now(), Model.getPriority(task));
+      task instanceof HTMLElement && task.focus();
     },
 
     moveCursor: function (offset: number): boolean {
-      const active = document.activeElement;
+      const active = this.currentTask();
       if (!active) return false;
       const dest = this.visibleTaskAtOffset(active, offset);
       if (dest !== active && dest instanceof HTMLElement) {
@@ -387,7 +444,7 @@ function BrowserUI() {
     },
 
     moveTask: function (offset: number) {
-      const active = document.activeElement;
+      const active = this.currentTask();
       if (!active) return;
       const dest = this.visibleTaskAtOffset(active, offset);
       if (dest === active) return; // Already extremal
@@ -401,16 +458,22 @@ function BrowserUI() {
     },
 
     removeTag: function () {
-      var target = document.activeElement;
+      const target = this.currentTag();
       if (!target) return;
-      if (target.classList.contains("task")) {
-        const tags = target.getElementsByClassName("tag");
-        target = tags[tags.length - 1];
-      }
-      if (!target || !target.classList.contains("tag")) return;
       ui.removeTag(target.parentElement!.getAttribute("data-created")!, target.textContent!);
     },
 
+    resetTagView: function () {
+      for (const task of document.getElementsByClassName("task")) {
+        task.classList.remove("hide");
+      }
+    },
+
+    resetView: function () {
+      this.setView("todo");
+      this.resetTagView();
+    },
+
     returnFocusAfterInput: function (): boolean {
       if (taskFocusedBeforeJumpingToInput) {
         taskFocusedBeforeJumpingToInput.focus();
@@ -421,20 +484,20 @@ function BrowserUI() {
 
     // Change task's priority to be between other tasks a and b.
     setPriority: function (task: Element, a: Element | null, b: Element | null) {
-      const aPriority = a === null ? 0 : Model.getPriority(a);
-      const bPriority = b === null ? clock.now() : Model.getPriority(b);
-      console.assert(aPriority < bPriority, aPriority, "<", bPriority);
-      const span = bPriority - aPriority;
-      const newPriority = aPriority + 0.1 * span + 0.8 * span * Math.random();
-      console.assert(aPriority < newPriority && newPriority < bPriority, aPriority, "<", newPriority, "<", bPriority);
+      const aPriority = a === null ? clock.now() : Model.getPriority(a);
+      const bPriority = b === null ? 0 : Model.getPriority(b);
+      console.assert(aPriority > bPriority, aPriority, ">", bPriority);
+      const span = aPriority - bPriority;
+      const newPriority = bPriority + 0.1 * span + 0.8 * span * Math.random();
+      console.assert(aPriority > newPriority && newPriority > bPriority, aPriority, ">", newPriority, ">", bPriority);
       const newPriorityRounded = Math.round(newPriority);
-      const okToRound = aPriority < newPriorityRounded && newPriorityRounded < bPriority;
+      const okToRound = aPriority > newPriorityRounded && newPriorityRounded > bPriority;
       ui.setPriority(task.getAttribute("data-created")!, okToRound ? newPriorityRounded : newPriority, Model.getPriority(task));
       task instanceof HTMLElement && task.focus();
     },
 
     setState: function (newState: string) {
-      const task = document.activeElement;
+      const task = this.currentTask();
       if (!task) return;
       const oldState = task.getAttribute("data-state")!;
       if (newState === oldState) return;
@@ -445,18 +508,31 @@ function BrowserUI() {
       return ui.setState(createTimestamp, newState, oldState);
     },
 
-    setView: function (state: string, color: string) {
+    setTagView: function () {
+      const target = this.currentTag();
+      if (!target) return;
+      const tag = target.textContent!;
+      for (const task of document.getElementsByClassName("task")) {
+        if (Model.hasTag(task, tag)) {
+          task.classList.remove("hide");
+        } else {
+          task.classList.add("hide");
+        }
+      }
+    },
+
+    setView: function (state: string) {
       const sheet = (document.getElementById("viewStyle") as HTMLStyleElement).sheet!;
       if (state === "all") {
         sheet.insertRule(`.task[data-state=deleted] { display: none }`);
       } else {
         sheet.insertRule(`.task:not([data-state=${state}]) { display: none }`);
       }
-      sheet.insertRule(`:root { --view-state-indicator-color: ${color}; }`);
+      sheet.insertRule(`:root { --view-state-indicator-color: ${viewColors[state]}; }`);
       sheet.removeRule(2);
       sheet.removeRule(2);
       currentViewState = state;
-      if (document.activeElement?.getAttribute("data-state") !== state) {
+      if (this.currentTask()?.getAttribute("data-state") !== state) {
         this.firstVisibleTask()?.focus();
       }
     },
@@ -465,10 +541,15 @@ 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();
 
+const scrollIncrement = 60;
 enum InputState {
   Root,
   S,
@@ -476,8 +557,10 @@ 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);
@@ -491,39 +574,55 @@ 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.ctrlKey) {
+          if (event.key == "e") return window.scrollBy(0, (inputCount ?? 1) * scrollIncrement);
+          if (event.key == "y") return window.scrollBy(0, (inputCount ?? 1) * -scrollIncrement);
+        } else {
+          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");
     } else if (inputState === InputState.V) {
       inputState = InputState.Root;
-      if (event.key == "a") return browserUI.setView("all", "Gold");
-      if (event.key == "c") return browserUI.setView("cancelled", "Red");
-      if (event.key == "d") return browserUI.setView("done", "LawnGreen");
-      if (event.key == "q") return browserUI.setView("todo", "White");
+      if (event.key == "a") return browserUI.setView("all");
+      if (event.key == "c") return browserUI.setView("cancelled");
+      if (event.key == "d") return browserUI.setView("done");
+      if (event.key == "q") return browserUI.setView("todo");
       if (event.key == "s") return (inputState = InputState.VS);
-      if (event.key == "v") return browserUI.setView("todo", "White");
-      if (event.key == "w") return browserUI.setView("waiting", "MediumOrchid");
-      if (event.key == "x") return browserUI.setView("deleted", "Black");
+      if (event.key == "T") return browserUI.resetTagView();
+      if (event.key == "t") return browserUI.setTagView();
+      if (event.key == "v") return browserUI.resetView();
+      if (event.key == "w") return browserUI.setView("waiting");
+      if (event.key == "x") return browserUI.setView("deleted");
     } else if (inputState === InputState.VS) {
       inputState = InputState.Root;
-      if (event.key == "m") return browserUI.setView("someday-maybe", "DeepSkyBlue");
+      if (event.key == "m") return browserUI.setView("someday-maybe");
     }
   }
 }