633 lines
16 KiB
TypeScript
633 lines
16 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;
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}
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/* kept for compatibility with add-ons */
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String.prototype.format = function () {
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const args = arguments;
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return this.replace(/\{\d+\}/g, function (m) {
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return args[m.match(/\d+/)];
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});
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};
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function setFGButton(col) {
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$("#forecolor")[0].style.backgroundColor = col;
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}
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function saveNow(keepFocus) {
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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() {
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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) {
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// esc clears focus, allowing dialog to close
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if (evt.which === 27) {
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currentField.blur();
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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.which === 39) {
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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.which === 37) {
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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 insertNewline() {
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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() {
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let n = window.getSelection().anchorNode as Element;
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if (n.nodeType === 3) {
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n = n.parentNode as Element;
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}
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return window.getComputedStyle(n).whiteSpace.startsWith("pre");
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}
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function onInput() {
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// empty field?
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if (currentField.innerHTML === "") {
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currentField.innerHTML = "<br>";
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}
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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() {
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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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$("#" + name).removeClass("highlighted");
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}
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}
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// fixme: forecolor
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// 'col': document.queryCommandValue("forecolor")
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}
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function toggleEditorButton(buttonid) {
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if ($(buttonid).hasClass("highlighted")) {
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$(buttonid).removeClass("highlighted");
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} else {
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$(buttonid).addClass("highlighted");
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}
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}
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function setFormat(cmd: string, arg?: any, nosave: boolean = false) {
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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() {
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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) {
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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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// don't adjust cursor on mouse clicks
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if (mouseDown) {
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return;
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}
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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(obj) {
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let cur = 0;
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do {
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cur += obj.offsetTop;
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} while ((obj = obj.offsetParent));
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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) {
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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, y) {
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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(elem) {
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pycmd("paste");
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window.event.preventDefault();
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}
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function caretToEnd() {
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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() {
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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) {
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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 +
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":" +
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currentFieldOrdinal() +
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":" +
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currentNoteId +
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":" +
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currentField.innerHTML
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);
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}
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function currentFieldOrdinal() {
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return currentField.id.substring(1);
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}
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function wrappedExceptForWhitespace(text, front, back) {
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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() {
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$("button.linkb:not(.perm)").prop("disabled", true);
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}
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function enableButtons() {
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$("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() {
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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, back) {
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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, back) {
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wrapInternal(front, back, true);
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}
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function wrapInternal(front, back, plainText) {
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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() {
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pycmd("cutOrCopy");
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return true;
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}
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function setFields(fields) {
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let txt = "";
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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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if (!f) {
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f = "<br>";
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}
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txt += `
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<tr>
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<td class=fname id="name${i}">${n}</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${i}
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onkeydown='onKey(window.event);'
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oninput='onInput();'
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onmouseup='onKey(window.event);'
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onfocus='onFocus(this);'
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onblur='onBlur();'
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class='field clearfix'
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onpaste='onPaste(this);'
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oncopy='onCutOrCopy(this);'
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oncut='onCutOrCopy(this);'
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contentEditable=true
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class=field
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>${f}</div>
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</td>
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</tr>`;
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}
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$("#fields").html(`
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<table cellpadding=0 width=100% style='table-layout: fixed;'>
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${txt}
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</table>`);
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maybeDisableButtons();
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}
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function setBackgrounds(cols) {
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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) {
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for (let i = 0; i < fonts.length; i++) {
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const n = $("#f" + i);
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n.css("font-family", fonts[i][0]).css("font-size", fonts[i][1]);
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n[0].dir = fonts[i][2] ? "rtl" : "ltr";
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}
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}
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function setNoteId(id) {
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currentNoteId = id;
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}
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function showDupes() {
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$("#dupes").show();
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}
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function hideDupes() {
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$("#dupes").hide();
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}
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/// If the field has only an empty br, remove it first.
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let insertHtmlRemovingInitialBR = function (html: string) {
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if (html !== "") {
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// remove <br> in empty field
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if (currentField && currentField.innerHTML === "<br>") {
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currentField.innerHTML = "";
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}
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setFormat("inserthtml", html);
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}
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};
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let pasteHTML = function (html, internal, extendedMode) {
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html = filterHTML(html, internal, extendedMode);
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insertHtmlRemovingInitialBR(html);
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};
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let filterHTML = function (html, internal, extendedMode) {
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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 (node) {
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// filter out attributes
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let toRemove = [];
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for (const attr of node.attributes) {
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const attrName = attr.name.toUpperCase();
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if (attrName !== "STYLE") {
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toRemove.push(attr);
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}
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}
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for (const attributeToRemove of toRemove) {
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node.removeAttributeNode(attributeToRemove);
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}
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// filter styling
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toRemove = [];
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for (const name of node.style) {
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if (!allowedStyling.hasOwnProperty(name)) {
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toRemove.push(name);
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}
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if (name === "background-color" && node.style[name] === "transparent") {
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// google docs adds this unnecessarily
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toRemove.push(name);
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}
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if (isNightMode()) {
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// ignore coloured text in night mode for now
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if (name === "background-color" || name == "color") {
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toRemove.push(name);
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}
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}
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}
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for (let name of toRemove) {
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node.style.removeProperty(name);
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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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// filtering from another field
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let filterInternalNode = function (node) {
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if (node.style) {
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node.style.removeProperty("background-color");
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node.style.removeProperty("font-size");
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node.style.removeProperty("font-family");
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}
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// recurse
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for (const child of node.childNodes) {
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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, extendedMode) {
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// text node?
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if (node.nodeType === 3) {
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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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const nodes = [];
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for (const child of node.childNodes) {
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nodes.push(child);
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}
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for (const child of nodes) {
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filterNode(child, extendedMode);
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}
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if (node.tagName === "ANKITOP") {
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return;
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}
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let tag;
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if (extendedMode) {
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tag = allowedTagsExtended[node.tagName];
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} else {
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tag = allowedTagsBasic[node.tagName];
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}
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if (!tag) {
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if (!node.innerHTML || node.tagName === "TITLE") {
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node.parentNode.removeChild(node);
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} else {
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node.outerHTML = node.innerHTML;
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}
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} else {
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if (typeof tag === "function") {
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// filtering function provided
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tag(node);
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} else {
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// allowed, filter out attributes
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const toRemove = [];
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for (const attr of node.attributes) {
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const attrName = attr.name.toUpperCase();
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if (tag.attrs.indexOf(attrName) === -1) {
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toRemove.push(attr);
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}
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}
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for (const attributeToRemove of toRemove) {
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node.removeAttributeNode(attributeToRemove);
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}
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}
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}
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};
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let adjustFieldsTopMargin = function () {
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const topHeight = $("#topbuts").height();
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|
const margin = topHeight + 8;
|
|
document.getElementById("fields").style.marginTop = margin + "px";
|
|
};
|
|
|
|
let mouseDown = 0;
|
|
|
|
$(function () {
|
|
document.body.onmousedown = function () {
|
|
mouseDown++;
|
|
};
|
|
|
|
document.body.onmouseup = function () {
|
|
mouseDown--;
|
|
};
|
|
|
|
document.onclick = function (evt: MouseEvent) {
|
|
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 (e) {
|
|
e.preventDefault();
|
|
});
|
|
|
|
window.onresize = function () {
|
|
adjustFieldsTopMargin();
|
|
};
|
|
|
|
adjustFieldsTopMargin();
|
|
});
|