646 lines
17 KiB
TypeScript
646 lines
17 KiB
TypeScript
/* Copyright: Ankitects Pty Ltd and contributors
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* License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html */
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let currentField = null;
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let changeTimer = null;
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let currentNoteId = null;
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declare interface String {
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format(...args: string[]): string;
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}
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/* kept for compatibility with add-ons */
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String.prototype.format = function (...args: string[]): string {
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return this.replace(/\{\d+\}/g, (m: string): void => {
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const match = m.match(/\d+/)
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return match
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? args[match[0]]
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: "";
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})
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};
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function setFGButton(col: string): void {
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$("#forecolor")[0].style.backgroundColor = col;
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}
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function saveNow(keepFocus: boolean): void {
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if (!currentField) {
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return;
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}
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clearChangeTimer();
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if (keepFocus) {
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saveField("key");
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} else {
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// triggers onBlur, which saves
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currentField.blur();
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}
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}
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function triggerKeyTimer(): void {
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clearChangeTimer();
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changeTimer = setTimeout(function () {
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updateButtonState();
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saveField("key");
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}, 600);
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}
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interface Selection {
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modify(s: string, t: string, u: string): void;
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}
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function onKey(evt: KeyboardEvent): void {
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// esc clears focus, allowing dialog to close
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if (evt.code === "Escape") {
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currentField.blur();
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return;
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}
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// prefer <br> instead of <div></div>
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if (evt.code === "Enter" && !inListItem()) {
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evt.preventDefault();
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document.execCommand("insertLineBreak");
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return;
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}
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// fix Ctrl+right/left handling in RTL fields
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if (currentField.dir === "rtl") {
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const selection = window.getSelection();
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let granularity = "character";
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let alter = "move";
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if (evt.ctrlKey) {
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granularity = "word";
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}
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if (evt.shiftKey) {
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alter = "extend";
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}
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if (evt.code === "ArrowRight") {
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selection.modify(alter, "right", granularity);
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evt.preventDefault();
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return;
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} else if (evt.code === "ArrowLeft") {
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selection.modify(alter, "left", granularity);
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evt.preventDefault();
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return;
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}
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}
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triggerKeyTimer();
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}
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function onKeyUp(evt: KeyboardEvent): void {
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// Avoid div element on remove
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if (evt.code === "Enter" || evt.code === "Backspace") {
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const anchor = window.getSelection().anchorNode;
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if (
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nodeIsElement(anchor) &&
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anchor.tagName === "DIV" &&
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!anchor.classList.contains("field") &&
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anchor.childElementCount === 1 &&
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anchor.children[0].tagName === "BR"
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) {
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anchor.replaceWith(anchor.children[0]);
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}
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}
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}
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function nodeIsElement(node: Node): node is Element {
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return node.nodeType === Node.ELEMENT_NODE;
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}
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function inListItem(): boolean {
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const anchor = window.getSelection().anchorNode;
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let n = nodeIsElement(anchor) ? anchor : anchor.parentElement;
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let inList = false;
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while (n) {
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inList = inList || window.getComputedStyle(n).display == "list-item";
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n = n.parentElement;
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}
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return inList;
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}
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function insertNewline(): void {
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if (!inPreEnvironment()) {
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setFormat("insertText", "\n");
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return;
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}
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// in some cases inserting a newline will not show any changes,
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// as a trailing newline at the end of a block does not render
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// differently. so in such cases we note the height has not
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// changed and insert an extra newline.
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const r = window.getSelection().getRangeAt(0);
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if (!r.collapsed) {
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// delete any currently selected text first, making
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// sure the delete is undoable
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setFormat("delete");
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}
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const oldHeight = currentField.clientHeight;
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setFormat("inserthtml", "\n");
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if (currentField.clientHeight === oldHeight) {
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setFormat("inserthtml", "\n");
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}
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}
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// is the cursor in an environment that respects whitespace?
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function inPreEnvironment(): boolean {
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const anchor = window.getSelection().anchorNode;
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const n = nodeIsElement(anchor) ? anchor : anchor.parentElement;
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return window.getComputedStyle(n).whiteSpace.startsWith("pre");
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}
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function onInput(): void {
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// make sure IME changes get saved
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triggerKeyTimer();
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}
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function updateButtonState(): void {
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const buts = ["bold", "italic", "underline", "superscript", "subscript"];
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for (const name of buts) {
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if (document.queryCommandState(name)) {
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$(`#${name}`).addClass("highlighted");
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} else {
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$(`#${name}`).removeClass("highlighted");
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}
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}
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// fixme: forecolor
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// 'col': document.queryCommandValue("forecolor")
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}
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function toggleEditorButton(buttonid: string): void {
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const button = $(buttonid);
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if (button.hasClass("highlighted")) {
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button.removeClass("highlighted");
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} else {
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button.addClass("highlighted");
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}
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}
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function setFormat(cmd: string, arg?: any, nosave: boolean = false): void {
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document.execCommand(cmd, false, arg);
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if (!nosave) {
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saveField("key");
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updateButtonState();
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}
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}
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function clearChangeTimer(): void {
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if (changeTimer) {
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clearTimeout(changeTimer);
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changeTimer = null;
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}
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}
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function onFocus(elem: HTMLElement): void {
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if (currentField === elem) {
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// anki window refocused; current element unchanged
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return;
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}
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currentField = elem;
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pycmd(`focus:${currentFieldOrdinal()}`);
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enableButtons();
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// do this twice so that there's no flicker on newer versions
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caretToEnd();
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// scroll if bottom of element off the screen
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function pos(elem: HTMLElement): number {
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let cur = 0;
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do {
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cur += elem.offsetTop;
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elem = elem.offsetParent as HTMLElement;
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} while (elem);
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return cur;
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}
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const y = pos(elem);
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if (
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window.pageYOffset + window.innerHeight < y + elem.offsetHeight ||
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window.pageYOffset > y
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) {
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window.scroll(0, y + elem.offsetHeight - window.innerHeight);
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}
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}
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function focusField(n: number): void {
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if (n === null) {
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return;
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}
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$(`#f${n}`).focus();
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}
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function focusIfField(x: number, y: number): boolean {
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const elements = document.elementsFromPoint(x, y);
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for (let i = 0; i < elements.length; i++) {
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let elem = elements[i] as HTMLElement;
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if (elem.classList.contains("field")) {
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elem.focus();
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// the focus event may not fire if the window is not active, so make sure
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// the current field is set
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currentField = elem;
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return true;
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}
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}
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return false;
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}
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function onPaste(): void {
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pycmd("paste");
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window.event.preventDefault();
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}
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function caretToEnd(): void {
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const r = document.createRange();
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r.selectNodeContents(currentField);
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r.collapse(false);
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const s = document.getSelection();
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s.removeAllRanges();
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s.addRange(r);
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}
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function onBlur(): void {
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if (!currentField) {
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return;
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}
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if (document.activeElement === currentField) {
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// other widget or window focused; current field unchanged
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saveField("key");
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} else {
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saveField("blur");
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currentField = null;
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disableButtons();
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}
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}
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function saveField(type: "blur" | "key"): void {
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clearChangeTimer();
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if (!currentField) {
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// no field has been focused yet
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return;
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}
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// type is either 'blur' or 'key'
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pycmd(
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`${type}:${currentFieldOrdinal()}:${currentNoteId}:${currentField.innerHTML}`
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);
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}
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function currentFieldOrdinal(): string {
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return currentField.id.substring(1);
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}
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function wrappedExceptForWhitespace(text: string, front: string, back: string): string {
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const match = text.match(/^(\s*)([^]*?)(\s*)$/);
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return match[1] + front + match[2] + back + match[3];
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}
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function disableButtons(): void {
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$("button.linkb:not(.perm)").prop("disabled", true);
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}
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function enableButtons(): void {
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$("button.linkb").prop("disabled", false);
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}
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// disable the buttons if a field is not currently focused
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function maybeDisableButtons(): void {
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if (!document.activeElement || document.activeElement.className !== "field") {
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disableButtons();
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} else {
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enableButtons();
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}
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}
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function wrap(front: string, back: string): void {
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wrapInternal(front, back, false);
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}
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/* currently unused */
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function wrapIntoText(front: string, back: string): void {
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wrapInternal(front, back, true);
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}
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function wrapInternal(front: string, back: string, plainText: boolean): void {
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const s = window.getSelection();
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let r = s.getRangeAt(0);
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const content = r.cloneContents();
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const span = document.createElement("span");
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span.appendChild(content);
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if (plainText) {
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const new_ = wrappedExceptForWhitespace(span.innerText, front, back);
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setFormat("inserttext", new_);
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} else {
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const new_ = wrappedExceptForWhitespace(span.innerHTML, front, back);
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setFormat("inserthtml", new_);
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}
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if (!span.innerHTML) {
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// run with an empty selection; move cursor back past postfix
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r = s.getRangeAt(0);
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r.setStart(r.startContainer, r.startOffset - back.length);
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r.collapse(true);
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s.removeAllRanges();
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s.addRange(r);
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}
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}
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function onCutOrCopy(): boolean {
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pycmd("cutOrCopy");
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return true;
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}
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function setFields(fields: [string, string][]): void {
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let txt = "";
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// webengine will include the variable after enter+backspace
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// if we don't convert it to a literal colour
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const color = window
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.getComputedStyle(document.documentElement)
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.getPropertyValue("--text-fg");
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for (let i = 0; i < fields.length; i++) {
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const n = fields[i][0];
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let f = fields[i][1];
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txt += `
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<tr>
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<td class=fname id="name${i}">
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<span class="fieldname">${n}</span>
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</td>
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</tr>
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<tr>
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<td width=100%>
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<div id="f${i}"
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onkeydown="onKey(window.event);"
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onkeyup="onKeyUp(window.event);"
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oninput="onInput();"
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onmouseup="onKey(window.event);"
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onfocus="onFocus(this);"
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onblur="onBlur();"
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class="field clearfix"
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onpaste="onPaste(this);"
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oncopy="onCutOrCopy(this);"
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oncut="onCutOrCopy(this);"
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contentEditable
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style="color: ${color}"
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>${f}</div>
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</td>
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</tr>`;
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}
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$("#fields").html(
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`<table cellpadding=0 width=100% style='table-layout: fixed;'>${txt}</table>`
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);
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maybeDisableButtons();
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}
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function setBackgrounds(cols: "dupe"[]) {
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for (let i = 0; i < cols.length; i++) {
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if (cols[i] === "dupe") {
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$(`#f${i}`).addClass("dupe");
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} else {
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$(`#f${i}`).removeClass("dupe");
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}
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}
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}
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function setFonts(fonts: [string, number, boolean][]): void {
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for (let i = 0; i < fonts.length; i++) {
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const n = $(`#f${i}`);
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n.css("font-family", fonts[i][0]).css("font-size", fonts[i][1]);
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n[0].dir = fonts[i][2] ? "rtl" : "ltr";
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}
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}
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function setNoteId(id: number): void {
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currentNoteId = id;
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}
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function showDupes(): void {
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$("#dupes").show();
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}
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function hideDupes(): void {
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$("#dupes").hide();
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}
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let pasteHTML = function (
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html: string,
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internal: boolean,
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extendedMode: boolean
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): void {
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html = filterHTML(html, internal, extendedMode);
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if (html !== "") {
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setFormat("inserthtml", html);
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}
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};
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let filterHTML = function (
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html: string,
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internal: boolean,
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extendedMode: boolean
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): string {
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// wrap it in <top> as we aren't allowed to change top level elements
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const top = $.parseHTML(`<ankitop>${html}</ankitop>`)[0] as Element;
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if (internal) {
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filterInternalNode(top);
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} else {
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filterNode(top, extendedMode);
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}
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let outHtml = top.innerHTML;
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if (!extendedMode && !internal) {
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// collapse whitespace
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outHtml = outHtml.replace(/[\n\t ]+/g, " ");
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}
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outHtml = outHtml.trim();
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//console.log(`input html: ${html}`);
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//console.log(`outpt html: ${outHtml}`);
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return outHtml;
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};
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let allowedTagsBasic = {};
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let allowedTagsExtended = {};
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let TAGS_WITHOUT_ATTRS = ["P", "DIV", "BR", "SUB", "SUP"];
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for (const tag of TAGS_WITHOUT_ATTRS) {
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allowedTagsBasic[tag] = { attrs: [] };
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}
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TAGS_WITHOUT_ATTRS = [
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"B",
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"BLOCKQUOTE",
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"CODE",
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"DD",
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"DL",
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"DT",
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"EM",
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"H1",
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"H2",
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"H3",
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"I",
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"LI",
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"OL",
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"PRE",
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"RP",
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"RT",
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"RUBY",
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"STRONG",
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"TABLE",
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"U",
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"UL",
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];
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for (const tag of TAGS_WITHOUT_ATTRS) {
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allowedTagsExtended[tag] = { attrs: [] };
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}
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allowedTagsBasic["IMG"] = { attrs: ["SRC"] };
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allowedTagsExtended["A"] = { attrs: ["HREF"] };
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allowedTagsExtended["TR"] = { attrs: ["ROWSPAN"] };
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allowedTagsExtended["TD"] = { attrs: ["COLSPAN", "ROWSPAN"] };
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allowedTagsExtended["TH"] = { attrs: ["COLSPAN", "ROWSPAN"] };
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allowedTagsExtended["FONT"] = { attrs: ["COLOR"] };
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const allowedStyling = {
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color: true,
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"background-color": true,
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"font-weight": true,
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"font-style": true,
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"text-decoration-line": true,
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};
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let isNightMode = function (): boolean {
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return document.body.classList.contains("nightMode");
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};
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let filterExternalSpan = function (elem: HTMLElement) {
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// filter out attributes
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for (const attr of [...elem.attributes]) {
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const attrName = attr.name.toUpperCase();
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if (attrName !== "STYLE") {
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elem.removeAttributeNode(attr);
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}
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}
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// filter styling
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for (const name of [...elem.style]) {
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const value = elem.style.getPropertyValue(name);
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if (
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!allowedStyling.hasOwnProperty(name) ||
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// google docs adds this unnecessarily
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(name === "background-color" && value === "transparent") ||
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// ignore coloured text in night mode for now
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(isNightMode() && (name === "background-color" || name === "color"))
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) {
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elem.style.removeProperty(name);
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}
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}
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};
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allowedTagsExtended["SPAN"] = filterExternalSpan;
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// add basic tags to extended
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Object.assign(allowedTagsExtended, allowedTagsBasic);
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function isHTMLElement(elem: Element): elem is HTMLElement {
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return elem instanceof HTMLElement;
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}
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// filtering from another field
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let filterInternalNode = function (elem: Element) {
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if (isHTMLElement(elem)) {
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elem.style.removeProperty("background-color");
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elem.style.removeProperty("font-size");
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elem.style.removeProperty("font-family");
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}
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// recurse
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for (let i = 0; i < elem.children.length; i++) {
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const child = elem.children[i];
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filterInternalNode(child);
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}
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};
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// filtering from external sources
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let filterNode = function (node: Node, extendedMode: boolean): void {
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if (!nodeIsElement(node)) {
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return;
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}
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// descend first, and take a copy of the child nodes as the loop will skip
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// elements due to node modifications otherwise
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for (const child of [...node.children]) {
|
|
filterNode(child, extendedMode);
|
|
}
|
|
|
|
if (node.tagName === "ANKITOP") {
|
|
return;
|
|
}
|
|
|
|
const tag = extendedMode
|
|
? allowedTagsExtended[node.tagName]
|
|
: allowedTagsBasic[node.tagName];
|
|
|
|
if (!tag) {
|
|
if (!node.innerHTML || node.tagName === "TITLE") {
|
|
node.parentNode.removeChild(node);
|
|
} else {
|
|
node.outerHTML = node.innerHTML;
|
|
}
|
|
} else {
|
|
if (typeof tag === "function") {
|
|
// filtering function provided
|
|
tag(node);
|
|
} else {
|
|
// allowed, filter out attributes
|
|
for (const attr of [...node.attributes]) {
|
|
const attrName = attr.name.toUpperCase();
|
|
if (tag.attrs.indexOf(attrName) === -1) {
|
|
node.removeAttributeNode(attr);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
let adjustFieldsTopMargin = function (): void {
|
|
const topHeight = $("#topbuts").height();
|
|
const margin = topHeight + 8;
|
|
document.getElementById("fields").style.marginTop = `${margin}px`;
|
|
};
|
|
|
|
let mouseDown = 0;
|
|
|
|
$(function (): void {
|
|
document.addEventListener("click", (evt: MouseEvent): void => {
|
|
const src = evt.target as Element;
|
|
if (src.tagName === "IMG") {
|
|
// image clicked; find contenteditable parent
|
|
let p = src;
|
|
while ((p = p.parentNode as Element)) {
|
|
if (p.className === "field") {
|
|
$(`#${p.id}`).focus();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
});
|
|
|
|
// prevent editor buttons from taking focus
|
|
$("button.linkb").on("mousedown", function (evt: Event) {
|
|
evt.preventDefault();
|
|
});
|
|
|
|
window.addEventListener("resize", () => {
|
|
adjustFieldsTopMargin();
|
|
});
|
|
|
|
adjustFieldsTopMargin();
|
|
});
|