stylus/edit/source-editor.js

359 lines
11 KiB
JavaScript

/* global CodeMirror dirtyReporter initLint */
/* global showToggleStyleHelp goBackToManage updateLintReportIfEnabled */
/* global editors linterConfig updateLinter regExpTester mozParser */
/* global createAppliesToLineWidget messageBox */
'use strict';
function createSourceEditor(style) {
// a flag for isTouched()
let hadBeenSaved = false;
let savedGeneration = 0;
$('#name').disabled = true;
$('#save-button').disabled = true;
$('#mozilla-format-container').remove();
$('#sections').textContent = '';
$('#sections').appendChild($create('.single-editor'));
const dirty = dirtyReporter();
dirty.onChange(() => {
document.body.classList.toggle('dirty', dirty.isDirty());
$('#save-button').disabled = !dirty.isDirty();
updateTitle();
});
// normalize style
if (!style.id) {
setupNewStyle(style);
} else {
// style might be an object reference to background page
style = deepCopy(style);
}
const cm = CodeMirror($('.single-editor'), {value: style.sourceCode});
editors.push(cm);
savedGeneration = cm.changeGeneration();
cm.operation(initAppliesToLineWidget);
updateMeta().then(() => {
initLint();
initLinterSwitch();
initHooks();
setTimeout(() => {
if ((document.activeElement || {}).localName !== 'input') {
cm.focus();
}
});
});
function initAppliesToLineWidget() {
const PREF_NAME = 'editor.appliesToLineWidget';
const widget = createAppliesToLineWidget(cm);
widget.toggle(prefs.get(PREF_NAME));
prefs.subscribe([PREF_NAME], (key, value) => widget.toggle(value));
}
function initLinterSwitch() {
const linterEl = $('#editor.linter');
let prevMode = NaN;
cm.on('optionChange', (cm, option) => {
if (option !== 'mode') {
return;
}
const mode = cm.doc.mode;
if (mode === prevMode || mode && mode.name === prevMode) {
return;
}
prevMode = mode;
updateLinter();
update();
});
linterEl.addEventListener('change', update);
update();
function update() {
linterEl.value = linterConfig.getName();
const cssLintOption = linterEl.querySelector('[value="csslint"]');
if (cm.getOption('mode') !== 'css') {
cssLintOption.disabled = true;
cssLintOption.title = t('linterCSSLintIncompatible', cm.getOption('mode'));
} else {
cssLintOption.disabled = false;
cssLintOption.title = '';
}
}
}
function setupNewStyle(style) {
style.sections[0].code = ' '.repeat(prefs.get('editor.tabSize')) + '/* Insert code here... */';
let section = mozParser.format(style);
if (!section.includes('@-moz-document')) {
style.sections[0].domains = ['example.com'];
section = mozParser.format(style);
}
const DEFAULT_CODE = `
/* ==UserStyle==
@name ${t('usercssReplaceTemplateName') + ' - ' + new Date().toLocaleString()}
@namespace github.com/openstyles/stylus
@version 0.1.0
@description A new userstyle
@author Me
==/UserStyle== */
`.replace(/^\s+/gm, '') + '\n\n' + section;
dirty.clear('sourceGeneration');
style.sourceCode = '';
chromeSync.getLZValue('usercssTemplate').then(code => {
style.sourceCode = code || DEFAULT_CODE;
cm.startOperation();
cm.setValue(style.sourceCode);
cm.clearHistory();
cm.markClean();
cm.endOperation();
dirty.clear('sourceGeneration');
savedGeneration = cm.changeGeneration();
});
}
function initHooks() {
$('#save-button').onclick = save;
$('#toggle-style-help').onclick = showToggleStyleHelp;
$('#enabled').onchange = function () {
const value = this.checked;
dirty.modify('enabled', style.enabled, value);
style.enabled = value;
};
$('#header').addEventListener('wheel', headerOnScroll, {passive: true});
cm.on('changes', () => {
dirty.modify('sourceGeneration', savedGeneration, cm.changeGeneration());
updateLintReportIfEnabled(cm);
});
cm.on('focus', () => cm.rerouteHotkeys(false));
cm.on('blur', () => cm.rerouteHotkeys(true));
CodeMirror.commands.prevEditor = cm => nextPrevMozDocument(cm, -1);
CodeMirror.commands.nextEditor = cm => nextPrevMozDocument(cm, 1);
CodeMirror.commands.toggleStyle = toggleStyle;
CodeMirror.commands.save = save;
CodeMirror.closestVisible = () => cm;
}
function updateMeta() {
$('#name').value = style.name;
$('#enabled').checked = style.enabled;
$('#url').href = style.url;
const {usercssData: {preprocessor} = {}} = style;
// beautify only works with regular CSS
$('#beautify').disabled = cm.getOption('mode') !== 'css';
updateTitle();
return cm.setPreprocessor(preprocessor);
}
function updateTitle() {
const newTitle = (dirty.isDirty() ? '* ' : '') +
(style.id ? t('editStyleTitle', [style.name]) : t('addStyleTitle'));
if (document.title !== newTitle) {
document.title = newTitle;
}
}
function replaceStyle(newStyle, codeIsUpdated) {
const sameCode = newStyle.sourceCode === cm.getValue();
hadBeenSaved = sameCode;
if (sameCode) {
savedGeneration = cm.changeGeneration();
dirty.clear('sourceGeneration');
}
if (codeIsUpdated === false || sameCode) {
updateEnvironment();
dirty.clear('enabled');
return;
}
Promise.resolve(messageBox.confirm(t('styleUpdateDiscardChanges'))).then(ok => {
if (!ok) {
return;
}
updateEnvironment();
if (!sameCode) {
const cursor = cm.getCursor();
cm.setValue(style.sourceCode);
cm.setCursor(cursor);
savedGeneration = cm.changeGeneration();
}
dirty.clear();
});
function updateEnvironment() {
if (style.id !== newStyle.id) {
history.replaceState({}, '', `?id=${newStyle.id}`);
}
sessionStorage.justEditedStyleId = newStyle.id;
style = deepCopy(newStyle);
updateMeta();
}
}
function toggleStyle() {
const value = !style.enabled;
dirty.modify('enabled', style.enabled, value);
style.enabled = value;
updateMeta();
// save when toggle enable state?
save();
}
function save() {
if (!dirty.isDirty()) {
return;
}
const code = cm.getValue();
return (
API.saveUsercss({
reason: 'editSave',
id: style.id,
enabled: style.enabled,
sourceCode: code,
}))
.then(replaceStyle)
.then(() => cm.setOption('mode', cm.doc.mode))
.catch(err => {
if (err.message === t('styleMissingMeta', 'name')) {
messageBox.confirm(t('usercssReplaceTemplateConfirmation')).then(ok => ok &&
chromeSync.setLZValue('usercssTemplate', code)
.then(() => chromeSync.getLZValue('usercssTemplate'))
.then(saved => saved !== code && messageBox.alert(t('syncStorageErrorSaving'))));
return;
}
const contents = Array.isArray(err) ?
$create('pre', err.join('\n')) :
[String(err)];
if (Number.isInteger(err.index)) {
const pos = cm.posFromIndex(err.index);
contents[0] += ` (line ${pos.line + 1} col ${pos.ch + 1})`;
contents.push($create('pre', drawLinePointer(pos)));
}
messageBox.alert(contents);
});
function drawLinePointer(pos) {
const SIZE = 60;
const line = cm.getLine(pos.line);
const numTabs = pos.ch + 1 - line.slice(0, pos.ch + 1).replace(/\t/g, '').length;
const pointer = ' '.repeat(pos.ch) + '^';
const start = Math.max(Math.min(pos.ch - SIZE / 2, line.length - SIZE), 0);
const end = Math.min(Math.max(pos.ch + SIZE / 2, SIZE), line.length);
const leftPad = start !== 0 ? '...' : '';
const rightPad = end !== line.length ? '...' : '';
return (
leftPad +
line.slice(start, end).replace(/\t/g, ' '.repeat(cm.options.tabSize)) +
rightPad +
'\n' +
' '.repeat(leftPad.length + numTabs * cm.options.tabSize) +
pointer.slice(start, end)
);
}
}
function isTouched() {
// indicate that the editor had been touched by the user
return dirty.isDirty() || hadBeenSaved;
}
function nextPrevMozDocument(cm, dir) {
const MOZ_DOC = '@-moz-document';
const cursor = cm.getCursor();
const usePrevLine = dir < 0 && cursor.ch <= MOZ_DOC.length;
let line = cursor.line + (usePrevLine ? -1 : 0);
let start = usePrevLine ? 1e9 : cursor.ch + (dir > 0 ? 1 : -MOZ_DOC.length);
let found;
if (dir > 0) {
cm.doc.iter(cursor.line, cm.doc.size, goFind);
if (!found && cursor.line > 0) {
line = 0;
cm.doc.iter(0, cursor.line + 1, goFind);
}
} else {
let handle, parentLines;
let passesRemain = line < cm.doc.size - 1 ? 2 : 1;
let stopAtLine = 0;
while (passesRemain--) {
let indexInParent = 0;
while (line >= stopAtLine) {
if (!indexInParent--) {
handle = cm.getLineHandle(line);
parentLines = handle.parent.lines;
indexInParent = parentLines.indexOf(handle);
} else {
handle = parentLines[indexInParent];
}
if (goFind(handle)) {
return true;
}
}
line = cm.doc.size - 1;
stopAtLine = cursor.line;
}
}
function goFind({text}) {
// use the initial 'start' on cursor row...
let ch = start;
// ...and reset it for the rest
start = dir > 0 ? 0 : 1e9;
while (true) {
// indexOf is 1000x faster than toLowerCase().indexOf() so we're trying it first
ch = dir > 0 ? text.indexOf('@-', ch) : text.lastIndexOf('@-', ch);
if (ch < 0) {
line += dir;
return;
}
if (text.substr(ch, MOZ_DOC.length).toLowerCase() === MOZ_DOC &&
cm.getTokenTypeAt({line, ch: ch + 1}) === 'def') {
break;
}
ch += dir * 3;
}
cm.setCursor(line, ch);
if (cm.cursorCoords().bottom > cm.display.scroller.clientHeight - 100) {
const margin = Math.min(100, cm.display.scroller.clientHeight / 4);
line += prefs.get('editor.appliesToLineWidget') ? 1 : 0;
cm.scrollIntoView({line, ch}, margin);
}
found = true;
return true;
}
}
function headerOnScroll({target, deltaY, deltaMode, shiftKey}) {
while ((target = target.parentElement)) {
if (deltaY < 0 && target.scrollTop ||
deltaY > 0 && target.scrollTop + target.clientHeight < target.scrollHeight) {
return;
}
}
cm.display.scroller.scrollTop +=
// WheelEvent.DOM_DELTA_LINE
deltaMode === 1 ? deltaY * cm.display.cachedTextHeight :
// WheelEvent.DOM_DELTA_PAGE
deltaMode === 2 || shiftKey ? Math.sign(deltaY) * cm.display.scroller.clientHeight :
// WheelEvent.DOM_DELTA_PIXEL
deltaY;
}
return {
replaceStyle,
save,
toggleStyle,
isDirty: dirty.isDirty,
getStyle: () => style,
isTouched
};
}