523 lines
15 KiB
JavaScript
523 lines
15 KiB
JavaScript
/* global regExpTester debounce messageBox CodeMirror */
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'use strict';
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function templateCache(cache) {
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function clone(id) {
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if (typeof cache[id] === 'function') {
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cache[id] = cache[id]();
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}
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return cache[id].cloneNode(true);
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}
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return {clone};
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}
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function createAppliesToLineWidget(cm) {
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const APPLIES_TYPE = [
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[t('appliesUrlOption'), 'url'],
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[t('appliesUrlPrefixOption'), 'url-prefix'],
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[t('appliesDomainOption'), 'domain'],
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[t('appliesRegexpOption'), 'regexp']
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];
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const THROTTLE_DELAY = 400;
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let widgets = [];
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let fromLine, toLine, styleVariables;
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let initialized = false;
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const template = templateCache({
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container: () =>
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$element({className: 'applies-to', appendChild: [
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$element({tag: 'label', appendChild: t('appliesLabel')}),
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$element({
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tag: 'ul',
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className: 'applies-to-list'
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})
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]}),
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listItem: () =>
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$element({tag: 'li', appendChild: [
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$element({
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tag: 'select',
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className: 'applies-type',
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appendChild: APPLIES_TYPE.map(([label, value]) => $element({
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tag: 'option',
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value: value,
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textContent: label
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}))
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}),
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$element({
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tag: 'input',
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className: 'applies-value'
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}),
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$element({
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tag: 'button',
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type: 'button',
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className: 'applies-to-regexp-test',
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textContent: t('styleRegexpTestButton')
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}),
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$element({
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tag: 'button',
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type: 'button',
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className: 'applies-to-remove',
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textContent: t('appliesRemove')
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}),
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$element({
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tag: 'button',
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type: 'button',
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className: 'applies-to-add',
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textContent: t('appliesAdd')
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})
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]}),
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appliesToEverything: () =>
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$element({
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tag: 'li',
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className: 'applies-to-everything',
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textContent: t('appliesToEverything')
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})
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});
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return {toggle};
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function toggle(newState = !initialized) {
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newState = Boolean(newState);
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if (newState !== initialized) {
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if (newState) {
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init();
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} else {
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uninit();
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}
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}
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}
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function init() {
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initialized = true;
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styleVariables = $element({tag: 'style'});
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fromLine = 0;
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toLine = cm.doc.size;
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cm.on('change', onChange);
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cm.on('optionChange', onOptionChange);
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// is it possible to avoid flickering?
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window.addEventListener('load', updateWidgetStyle);
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chrome.runtime.onMessage.addListener(onRuntimeMessage);
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updateWidgetStyle();
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update();
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}
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function uninit() {
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initialized = false;
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widgets.forEach(clearWidget);
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widgets.length = 0;
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cm.off('change', onChange);
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cm.off('optionChange', onOptionChange);
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window.removeEventListener('load', updateWidgetStyle);
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chrome.runtime.onMessage.removeListener(onRuntimeMessage);
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styleVariables.remove();
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}
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function onChange(cm, event) {
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const {from, to, origin} = event;
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if (origin === 'appliesTo') {
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return;
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}
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const lastChanged = CodeMirror.changeEnd(event).line;
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fromLine = Math.min(fromLine === null ? from.line : fromLine, from.line);
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toLine = Math.max(toLine === null ? lastChanged : toLine, to.line);
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if (origin === 'setValue') {
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update();
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} else {
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debounce(update, THROTTLE_DELAY);
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}
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}
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function onOptionChange(cm, option) {
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if (option === 'theme') {
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updateWidgetStyle();
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}
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}
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function onRuntimeMessage(msg) {
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if (msg.style || msg.styles ||
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msg.prefs && 'disableAll' in msg.prefs ||
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msg.method === 'styleDeleted') {
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requestAnimationFrame(updateWidgetStyle);
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}
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}
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function update() {
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const changed = {fromLine, toLine};
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fromLine = Math.max(fromLine || 0, cm.display.viewFrom);
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toLine = Math.min(toLine === null ? cm.doc.size : toLine, cm.display.viewTo || toLine);
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const visible = {fromLine, toLine};
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if (fromLine >= cm.display.viewFrom && toLine <= (cm.display.viewTo || toLine)) {
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cm.operation(doUpdate);
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}
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if (changed.fromLine !== visible.fromLine || changed.toLine !== visible.toLine) {
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setTimeout(updateInvisible, 0, changed, visible);
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}
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}
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function updateInvisible(changed, visible) {
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let inOp = false;
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if (changed.fromLine < visible.fromLine) {
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fromLine = Math.min(fromLine, changed.fromLine);
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toLine = Math.min(changed.toLine, visible.fromLine);
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inOp = true;
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cm.startOperation();
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doUpdate();
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}
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if (changed.toLine > visible.toLine) {
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fromLine = Math.max(fromLine, changed.toLine);
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toLine = Math.max(changed.toLine, visible.toLine);
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if (!inOp) {
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inOp = true;
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cm.startOperation();
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}
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cm.operation(doUpdate);
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}
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if (inOp) {
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cm.endOperation();
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}
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}
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function updateWidgetStyle() {
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const gutterStyle = getComputedStyle(cm.getGutterElement());
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const borderStyle = gutterStyle.borderRightWidth !== '0px' ?
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`${gutterStyle.borderRightWidth} ${gutterStyle.borderRightStyle} ${gutterStyle.borderRightColor}` :
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`1px solid ${gutterStyle.color}`;
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const id = Date.now();
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styleVariables.textContent = `
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.single-editor {
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--at-background-color-${id}: ${gutterStyle.backgroundColor};
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--at-border-top-${id}: ${borderStyle};
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--at-border-bottom-${id}: ${borderStyle};
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}
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.applies-to {
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background-color: var(--at-background-color-${id});
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border-top: var(--at-border-top-${id});
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border-bottom: var(--at-border-bottom-${id});
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}
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`;
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document.documentElement.appendChild(styleVariables);
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}
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function doUpdate() {
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// find which widgets needs to be update
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// some widgets (lines) might be deleted
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widgets = widgets.filter(w => w.line.lineNo() !== null);
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let i = widgets.findIndex(w => w.line.lineNo() > fromLine) - 1;
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let j = widgets.findIndex(w => w.line.lineNo() > toLine);
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if (i === -2) {
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i = widgets.length - 1;
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}
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if (j < 0) {
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j = widgets.length;
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}
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// decide search range
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const fromPos = {line: widgets[i] ? widgets[i].line.lineNo() : 0, ch: 0};
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const toPos = {line: widgets[j] ? widgets[j].line.lineNo() : toLine + 1, ch: 0};
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// calc index->pos lookup table
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let line = 0;
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let index = 0;
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let fromIndex, toIndex;
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const lineIndexes = [index];
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cm.doc.iter(({text}) => {
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fromIndex = line === fromPos.line ? index : fromIndex;
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lineIndexes.push((index += text.length + 1));
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line++;
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toIndex = line >= toPos.line ? index : toIndex;
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return toIndex;
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});
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// splice
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i = Math.max(0, i);
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widgets.splice(i, 0, ...createWidgets(fromIndex, toIndex, widgets.splice(i, j - i), lineIndexes));
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fromLine = null;
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toLine = null;
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}
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function *createWidgets(start, end, removed, lineIndexes) {
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let i = 0;
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let itemHeight;
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for (const section of findAppliesTo(start, end)) {
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while (removed[i] && removed[i].line.lineNo() < section.pos.line) {
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clearWidget(removed[i++]);
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}
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for (const a of section.applies) {
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setupApplyMarkers(a, lineIndexes);
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}
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if (removed[i] && removed[i].line.lineNo() === section.pos.line) {
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// reuse old widget
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removed[i].section.applies.forEach(apply => {
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apply.type.mark.clear();
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apply.value.mark.clear();
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});
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removed[i].section = section;
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const newNode = buildElement(section);
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if (removed[i].node.parentNode) {
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removed[i].node.parentNode.replaceChild(newNode, removed[i].node);
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}
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removed[i].node = newNode;
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removed[i].changed();
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yield removed[i];
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i++;
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continue;
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}
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// new widget
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const widget = cm.addLineWidget(section.pos.line, buildElement(section), {
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coverGutter: true,
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noHScroll: true,
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above: true,
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height: itemHeight ? section.applies.length * itemHeight : undefined,
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});
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widget.section = section;
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itemHeight = itemHeight || widget.node.offsetHeight / (section.applies.length || 1);
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yield widget;
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}
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removed.slice(i).forEach(clearWidget);
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}
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function clearWidget(widget) {
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widget.clear();
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widget.section.applies.forEach(clearApply);
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}
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function clearApply(apply) {
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apply.type.mark.clear();
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apply.value.mark.clear();
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apply.mark.clear();
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}
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function setupApplyMarkers(apply, lineIndexes) {
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apply.type.mark = cm.markText(
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posFromIndex(cm, apply.type.start, lineIndexes),
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posFromIndex(cm, apply.type.end, lineIndexes),
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{clearWhenEmpty: false}
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);
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apply.value.mark = cm.markText(
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posFromIndex(cm, apply.value.start, lineIndexes),
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posFromIndex(cm, apply.value.end, lineIndexes),
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{clearWhenEmpty: false}
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);
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apply.mark = cm.markText(
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posFromIndex(cm, apply.start, lineIndexes),
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posFromIndex(cm, apply.end, lineIndexes),
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{clearWhenEmpty: false}
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);
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}
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function posFromIndex(cm, index, lineIndexes) {
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if (!lineIndexes) {
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return cm.posFromIndex(index);
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}
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let line = lineIndexes.prev || 0;
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const prev = lineIndexes[line];
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const next = lineIndexes[line + 1];
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if (prev <= index && index < next) {
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return {line, ch: index - prev};
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}
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let a = index < prev ? 0 : line;
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let b = index < next ? line + 1 : lineIndexes.length - 1;
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while (a < b - 1) {
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const mid = (a + b) >> 1;
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if (lineIndexes[mid] < index) {
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a = mid;
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} else {
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b = mid;
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}
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}
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line = lineIndexes[b] > index ? a : b;
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Object.defineProperty(lineIndexes, 'prev', {value: line, configurable: true});
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return {line, ch: index - lineIndexes[line]};
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}
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function buildElement({applies}) {
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const el = template.clone('container');
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const appliesToList = $('.applies-to-list', el);
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applies.map(makeLi)
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.forEach(item => appliesToList.appendChild(item));
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if (!appliesToList.childNodes.length) {
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appliesToList.appendChild(template.clone('appliesToEverything'));
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}
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return el;
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function makeLi(apply) {
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const el = template.clone('listItem');
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el.dataset.type = apply.type.text;
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el.addEventListener('change', e => {
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if (e.target.classList.contains('applies-type')) {
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el.dataset.type = apply.type.text;
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}
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});
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const typeInput = $('.applies-type', el);
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typeInput.value = apply.type.text;
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typeInput.onchange = function () {
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applyChange(apply.type, this.value);
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};
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const valueInput = $('.applies-value', el);
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valueInput.value = apply.value.text;
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valueInput.oninput = function () {
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debounce(applyChange, THROTTLE_DELAY, apply.value, this.value);
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};
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valueInput.onfocus = updateRegexpTest;
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const regexpTestButton = $('.applies-to-regexp-test', el);
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regexpTestButton.onclick = () => {
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regExpTester.toggle();
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regExpTester.update([apply.value.text]);
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};
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const removeButton = $('.applies-to-remove', el);
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removeButton.onclick = function () {
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const i = applies.indexOf(apply);
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let repl;
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let from;
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let to;
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if (applies.length < 2) {
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messageBox({
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contents: chrome.i18n.getMessage('appliesRemoveError'),
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buttons: [t('confirmClose')]
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});
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return;
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}
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if (i === 0) {
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from = apply.mark.find().from;
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to = applies[i + 1].mark.find().from;
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repl = '';
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} else if (i === applies.length - 1) {
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from = applies[i - 1].mark.find().to;
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to = apply.mark.find().to;
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repl = '';
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} else {
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from = applies[i - 1].mark.find().to;
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to = applies[i + 1].mark.find().from;
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repl = ', ';
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}
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cm.replaceRange(repl, from, to, 'appliesTo');
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clearApply(apply);
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this.closest('li').remove();
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applies.splice(i, 1);
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};
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const addButton = $('.applies-to-add', el);
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addButton.onclick = function () {
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const i = applies.indexOf(apply);
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const pos = apply.mark.find().to;
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const text = `, ${apply.type.text}("")`;
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cm.replaceRange(text, pos, pos, 'appliesTo');
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const newApply = createApply(
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cm.indexFromPos(pos) + 2,
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apply.type.text,
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'',
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true
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);
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setupApplyMarkers(newApply);
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applies.splice(i + 1, 0, newApply);
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this.closest('li').insertAdjacentElement('afterend', makeLi(newApply));
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};
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return el;
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function updateRegexpTest() {
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if (apply.type.text === 'regexp') {
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const re = apply.value.text.trim();
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if (re) {
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regExpTester.update([re]);
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} else {
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regExpTester.update([]);
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}
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}
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}
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function applyChange(input, newText) {
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const range = input.mark.find();
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input.mark.clear();
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cm.replaceRange(newText, range.from, range.to, 'appliesTo');
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input.mark = cm.markText(
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range.from,
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cm.findPosH(range.from, newText.length, 'char'),
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{clearWhenEmpty: false}
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);
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input.text = newText;
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if (input === apply.type) {
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const range = apply.mark.find();
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apply.mark.clear();
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apply.mark = cm.markText(
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input.mark.find().from,
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range.to,
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{clearWhenEmpty: false}
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);
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}
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updateRegexpTest();
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}
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}
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}
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function createApply(pos, typeText, valueText, isQuoted = false) {
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const start = pos;
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const typeStart = start;
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const typeEnd = typeStart + typeText.length;
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const valueStart = typeEnd + 1 + Number(isQuoted);
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const valueEnd = valueStart + valueText.length;
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const end = valueEnd + Number(isQuoted) + 1;
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return {
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start,
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type: {
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text: typeText,
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start: typeStart,
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end: typeEnd,
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},
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value: {
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text: valueText,
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start: valueStart,
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end: valueEnd,
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},
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end
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};
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}
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function *findAppliesTo(posStart, posEnd) {
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const text = cm.getValue();
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const re = /^[\t ]*@-moz-document\s+/mg;
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const applyRe = /(url|url-prefix|domain|regexp)\(((['"])(?:\\\\|\\\n|\\\3|[^\n])*?\3|[^)\n]*)\)[\s,]*/iyg;
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let match;
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re.lastIndex = posStart;
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while ((match = re.exec(text))) {
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if (match.index >= posEnd) {
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return;
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}
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const applies = [];
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let m;
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applyRe.lastIndex = re.lastIndex;
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while ((m = applyRe.exec(text))) {
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const apply = createApply(
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m.index,
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m[1],
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unquote(m[2]),
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unquote(m[2]) !== m[2]
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);
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applies.push(apply);
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re.lastIndex = applyRe.lastIndex;
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}
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yield {
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pos: cm.posFromIndex(match.index),
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applies
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};
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}
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}
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function unquote(s) {
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const first = s.charAt(0);
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return (first === '"' || first === "'") && s.endsWith(first) ? s.slice(1, -1) : s;
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}
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}
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