+function BrowserUI() {
+ var currentViewState = "todo";
+ var taskFocusedBeforeJumpingToInput: HTMLElement | null = null;
+ var lastTagNameEntered = "";
+ return {
+ addTask: function (event: KeyboardEvent) {
+ const input = <HTMLInputElement>document.getElementById("taskName");
+ if (input.value) {
+ const task = ui.addTask(input.value);
+ if (currentViewState === "todo") {
+ task instanceof HTMLElement && task.focus();
+ } else if (this.returnFocusAfterInput()) {
+ } else {
+ this.firstVisibleTask()?.focus();
+ }
+ input.value = "";
+ if (event.getModifierState("Control")) {
+ this.setPriority(task, null, document.getElementsByClassName("task")[0]);
+ }
+ }
+ },
+
+ beginEdit: function (event: Event) {
+ const task = document.activeElement;
+ if (!task) return;
+ const input = document.createElement("input");
+ const oldDescription = task.textContent!;
+ task.setAttribute("data-description", oldDescription);
+ input.value = oldDescription;
+ input.addEventListener("blur", this.completeEdit, { once: true });
+ task.textContent = "";
+ task.insertBefore(input, task.firstChild);
+ input.focus();
+ event.preventDefault();
+ },
+
+ beginTagEdit: function (event: Event) {
+ const task = document.activeElement;
+ if (!task) return;
+ const input = document.createElement("input");
+ input.classList.add("tag");
+ input.addEventListener("blur", this.completeTagEdit, { once: true });
+ input.value = lastTagNameEntered;
+ task.appendChild(input);
+ input.focus();
+ input.select();
+ event.preventDefault();
+ },
+
+ completeEdit: function (event: Event, resolution: CommitOrAbort = CommitOrAbort.Commit) {
+ const input = event.target as HTMLInputElement;
+ const task = input.parentElement!;
+ const oldDescription = task.getAttribute("data-description")!;
+ const newDescription = input.value;
+ input.removeEventListener("blur", this.completeEdit);
+ task.removeChild(input);
+ task.removeAttribute("data-description");
+ task.focus();
+ if (newDescription === oldDescription || resolution === CommitOrAbort.Abort) {
+ task.textContent = oldDescription;
+ } else {
+ ui.edit(task.getAttribute("data-created")!, newDescription, oldDescription);
+ }
+ },
+
+ completeTagEdit: function (event: Event, resolution: CommitOrAbort = CommitOrAbort.Commit) {
+ const input = event.target as HTMLInputElement;
+ const task = input.parentElement!;
+ const newTagName = input.value;
+ input.removeEventListener("blur", this.completeTagEdit);
+ task.removeChild(input);
+ task.focus();
+ if (resolution === CommitOrAbort.Commit && newTagName && !Model.hasTag(task, newTagName)) {
+ ui.addTag(task.getAttribute("data-created")!, newTagName);
+ lastTagNameEntered = newTagName;
+ }
+ },
+
+ firstVisibleTask: function () {
+ for (const task of document.getElementsByClassName("task")) {
+ if (task instanceof HTMLElement && task.getAttribute("data-state") === currentViewState) {
+ return task;
+ }
+ }
+ },
+
+ focusTaskNameInput: function (event: Event) {
+ if (document.activeElement instanceof HTMLElement) {
+ taskFocusedBeforeJumpingToInput = document.activeElement;
+ }
+ document.getElementById("taskName")!.focus();
+ event.preventDefault();
+ },
+
+ visibleTaskAtOffset(task: Element, offset: number): Element {
+ var cursor: Element | null = task;
+ var valid_cursor = cursor;
+ const increment = offset / Math.abs(offset);
+ while (true) {
+ cursor = increment > 0 ? cursor.nextElementSibling : cursor.previousElementSibling;
+ if (!cursor || !(cursor instanceof HTMLElement)) break;
+ if (cursor.getAttribute("data-state")! === currentViewState) {
+ offset -= increment;
+ valid_cursor = cursor;
+ }
+ if (Math.abs(offset) < 0.5) break;
+ }
+ return valid_cursor;
+ },
+
+ moveCursor: function (offset: number): boolean {
+ const active = document.activeElement;
+ if (!active) return false;
+ const dest = this.visibleTaskAtOffset(active, offset);
+ if (dest !== active && dest instanceof HTMLElement) {
+ dest.focus();
+ return true;
+ }
+ return false;
+ },
+
+ moveTask: function (offset: number) {
+ const active = document.activeElement;
+ if (!active) return;
+ const dest = this.visibleTaskAtOffset(active, offset);
+ if (dest === active) return; // Already extremal
+ var onePastDest: Element | null = this.visibleTaskAtOffset(dest, offset / Math.abs(offset));
+ if (onePastDest == dest) onePastDest = null; // Will become extremal
+ if (offset > 0) {
+ this.setPriority(active, dest, onePastDest);
+ } else {
+ this.setPriority(active, onePastDest, dest);
+ }
+ },
+
+ returnFocusAfterInput: function (): boolean {
+ if (taskFocusedBeforeJumpingToInput) {
+ taskFocusedBeforeJumpingToInput.focus();
+ return true;
+ }
+ return false;
+ },
+
+ // 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 newPriorityRounded = Math.round(newPriority);
+ 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;
+ if (!task) return;
+ const oldState = task.getAttribute("data-state")!;
+ if (newState === oldState) return;
+ const createTimestamp = task.getAttribute("data-created")!;
+ this.moveCursor(1) || this.moveCursor(-1);
+ return ui.setState(createTimestamp, newState, oldState);
+ },
+
+ setView: function (state: string) {
+ const sheet = (document.getElementById("viewStyle") as HTMLStyleElement).sheet!;
+ sheet.insertRule(`.task:not([data-state=${state}]) { display: none }`);
+ sheet.removeRule(1);
+ currentViewState = state;
+ if (document.activeElement?.getAttribute("data-state") !== state) {
+ this.firstVisibleTask()?.focus();
+ }
+ },
+
+ undo: function () {
+ const ret = ui.undo();
+ if (ret && ret instanceof HTMLElement) ret.focus();
+ },
+ };
projects / vopamoi / blobdiff