stylus/edit/source-editor.js
2017-09-14 09:58:22 +08:00

385 lines
11 KiB
JavaScript

/* global CodeMirror dirtyReporter initLint beautify showKeyMapHelp */
/* global showToggleStyleHelp goBackToManage updateLintReportIfEnabled */
/* global hotkeyRerouter setupAutocomplete */
/* global editors */
'use strict';
function createSourceEditor(style) {
// style might be an object reference to background page
style = deepCopy(style);
// draw HTML
$('#sections').innerHTML = '';
$('#name').disabled = true;
$('#mozilla-format-heading').parentNode.remove();
$('#sections').appendChild(
$element({className: 'single-editor', appendChild: [
$element({tag: 'textarea'})
]})
);
// draw CodeMirror
$('#sections textarea').value = style.source;
const cm = CodeMirror.fromTextArea($('#sections textarea'));
// too many functions depend on this global
editors.push(cm);
// dirty reporter
const dirty = dirtyReporter();
dirty.onChange(() => {
const DIRTY = dirty.isDirty();
document.body.classList.toggle('dirty', DIRTY);
$('#save-button').disabled = !DIRTY;
updateTitle();
});
// draw metas info
updateMetas();
initHooks();
initLint();
initAppliesToReport(cm);
function initAppliesToReport(cm) {
const DELAY = 500;
let widgets = [], timer, fromLine, toLine, style, isInit;
const optionEl = buildOption();
$('#options').insertBefore(optionEl, $('#options > .option.aligned'));
if (prefs.get('editor.appliesToLineWidget')) {
init();
}
prefs.subscribe(['editor.appliesToLineWidget'], (key, value) => {
if (!isInit && value) {
init();
} else if (isInit && !value) {
uninit();
}
optionEl.checked = value;
});
optionEl.addEventListener('change', e => {
prefs.set('editor.appliesToLineWidget', e.target.checked);
});
function buildOption() {
return $element({className: 'option', appendChild: [
$element({
tag: 'input',
type: 'checkbox',
id: 'editor.appliesToLineWidget',
checked: prefs.get('editor.appliesToLineWidget')
}),
$element({
tag: 'label',
htmlFor: 'editor.appliesToLineWidget',
textContent: ' ' + t('appliesLineWidgetLabel'),
title: t('appliesLineWidgetWarning')
})
]});
}
function init() {
isInit = true;
style = getComputedStyle(cm.getGutterElement());
fromLine = null;
toLine = null;
cm.on('change', onChange);
cm.on('optionChange', onOptionChange);
// is it possible to avoid flickering?
window.addEventListener('load', updateStyle);
update();
}
function uninit() {
isInit = false;
widgets.forEach(w => w.clear());
widgets.length = 0;
cm.off('change', onChange);
cm.off('optionChange', onOptionChange);
window.removeEventListener('load', updateStyle);
}
function onChange(cm, {from, to}) {
if (fromLine === null || toLine === null) {
fromLine = from.line;
toLine = to.line;
} else {
fromLine = Math.min(fromLine, from.line);
toLine = Math.max(toLine, to.line);
}
clearTimeout(timer);
timer = setTimeout(update, DELAY);
}
function onOptionChange(cm, option) {
if (option === 'theme') {
updateStyle();
}
}
function update() {
cm.operation(doUpdate);
}
function updateStyle() {
style = getComputedStyle(cm.getGutterElement());
widgets.forEach(setWidgetStyle);
}
function setWidgetStyle(widget) {
let borderStyle = '';
if (style.borderRightWidth !== '0px') {
borderStyle = `${style.borderRightWidth} ${style.borderRightStyle} ${style.borderRightColor}`;
} else {
borderStyle = `1px solid ${style.color}`;
}
widget.node.style.backgroundColor = style.backgroundColor;
widget.node.style.borderTop = borderStyle;
widget.node.style.borderBottom = borderStyle;
}
function doUpdate() {
// find which widgets needs to be update
// some widgets (lines) might be deleted
widgets = widgets.filter(w => w.line.lineNo() !== null);
let i = fromLine === null ? 0 : widgets.findIndex(w => w.line.lineNo() > fromLine) - 1;
let j = toLine === null ? 0 : widgets.findIndex(w => w.line.lineNo() > toLine);
if (i === -2) {
i = widgets.length - 1;
}
if (j < 0) {
j = widgets.length;
}
// decide search range
const fromIndex = widgets[i] ? cm.indexFromPos({line: widgets[i].line.lineNo(), ch: 0}) : 0;
const toIndex = widgets[j] ? cm.indexFromPos({line: widgets[j].line.lineNo(), ch: 0}) : cm.getValue().length;
// splice
if (i < 0) {
i = 0;
}
widgets.splice(i, 0, ...createWidgets(fromIndex, toIndex, widgets.splice(i, j - i)));
fromLine = null;
toLine = null;
}
function *createWidgets(start, end, removed) {
let i = 0;
for (const section of findAppliesTo(start, end)) {
while (removed[i] && removed[i].line.lineNo() < section.pos.line) {
removed[i++].clear();
}
if (removed[i] && removed[i].line.lineNo() === section.pos.line) {
// reuse old widget
const newNode = buildElement(section);
removed[i].node.parentNode.replaceChild(newNode, removed[i].node);
removed[i].node = newNode;
setWidgetStyle(removed[i]);
removed[i].changed();
yield removed[i];
i++;
continue;
}
// new widget
const widget = cm.addLineWidget(section.pos.line, buildElement(section), {
coverGutter: true,
noHScroll: true,
above: true
});
setWidgetStyle(widget);
yield widget;
}
removed.slice(i).forEach(w => w.clear());
}
function buildElement({applies}) {
const el = $element({className: 'applies-to', appendChild: [
$element({tag: 'label', appendChild: [
t('appliesLabel'),
// $element({tag: 'svg'})
]}),
$element({tag: 'ul', className: 'applies-to-list', appendChild: applies.map(apply =>
$element({tag: 'li', appendChild: [
$element({tag: 'input', className: 'applies-type', value: typeLabel(apply.type), readOnly: true}),
$element({tag: 'input', className: 'applies-value', value: apply.value, readOnly: true})
]})
)})
]});
if (!$('li', el)) {
$('ul', el).appendChild($element({
tag: 'li',
className: 'applies-to-everything',
textContent: t('appliesToEverything')
}));
}
return el;
}
function typeLabel(type) {
switch (type.toLowerCase()) {
case 'url':
return t('appliesUrlOption');
case 'url-prefix':
return t('appliesUrlPrefixOption');
case 'domain':
return t('appliesDomainOption');
case 'regexp':
return t('appliesRegexpOption');
}
}
function *findAppliesTo(posStart, posEnd) {
const text = cm.getValue();
const re = /^[\t ]*@-moz-document\s+/mg;
const applyRe = /^(url|url-prefix|domain|regexp)\(((['"])(?:\\\\|\\\n|\\\3|[^\n])*?\3|[^)\n]*)\)[\s,]*/i;
let preIndex = re.lastIndex = posStart;
let match;
let pos = cm.posFromIndex(preIndex);
while ((match = re.exec(text))) {
if (match.index >= posEnd) {
return;
}
pos = cm.findPosH(pos, match.index - preIndex, 'char');
const applies = [];
let t = text.slice(re.lastIndex);
let m;
while ((m = t.match(applyRe))) {
applies.push({type: m[1], value: normalizeString(m[2])});
t = t.slice(m[0].length);
}
yield {pos, applies};
preIndex = match.index;
re.lastIndex = text.length - t.length;
}
}
function normalizeString(s) {
if (/^(['"])[\s\S]*\1$/.test(s)) {
return s.slice(1, -1);
}
return s;
}
}
function initHooks() {
// sidebar commands
$('#save-button').onclick = save;
$('#beautify').onclick = beautify;
$('#keyMap-help').onclick = showKeyMapHelp;
$('#toggle-style-help').onclick = showToggleStyleHelp;
$('#cancel-button').onclick = goBackToManage;
// enable
$('#enabled').onchange = e => {
const value = e.target.checked;
dirty.modify('enabled', style.enabled, value);
style.enabled = value;
};
// source
cm.on('change', () => {
const value = cm.getValue();
dirty.modify('source', style.source, value);
style.source = value;
updateLintReportIfEnabled(cm);
});
// hotkeyRerouter
cm.on('focus', () => {
hotkeyRerouter.setState(false);
});
cm.on('blur', () => {
hotkeyRerouter.setState(true);
});
// autocomplete
if (prefs.get('editor.autocompleteOnTyping')) {
setupAutocomplete(cm);
}
}
function updateMetas() {
$('#name').value = style.name;
$('#enabled').checked = style.enabled;
$('#url').href = style.url;
cm.setOption('mode', style.preprocessor || 'css');
CodeMirror.autoLoadMode(cm, style.preprocessor || 'css');
// beautify only works with regular CSS
$('#beautify').disabled = Boolean(style.preprocessor);
updateTitle();
}
function updateTitle() {
// title depends on dirty and style meta
document.title = (dirty.isDirty() ? '* ' : '') + t('editStyleTitle', [style.name]);
}
function replaceStyle(newStyle) {
style = deepCopy(newStyle);
updateMetas();
if (style.source !== cm.getValue()) {
const cursor = cm.getCursor();
cm.setValue(style.source);
cm.setCursor(cursor);
}
dirty.clear();
}
function updateStyleMeta(newStyle) {
dirty.modify('enabled', style.enabled, newStyle.enabled);
style.enabled = newStyle.enabled;
}
function toggleStyle() {
const value = !style.enabled;
dirty.modify('enabled', style.enabled, value);
style.enabled = value;
updateMetas();
// save when toggle enable state?
save();
}
function save() {
if (!dirty.isDirty()) {
return;
}
const req = {
method: 'saveUsercss',
reason: 'editSave',
id: style.id,
enabled: style.enabled,
edited: dirty.has('source'),
source: style.source
};
return onBackgroundReady().then(() => BG.saveUsercss(req))
.then(result => {
if (result.status === 'error') {
throw new Error(result.error);
}
return result;
})
.then(({style}) => {
replaceStyle(style);
})
.catch(err => {
console.error(err);
alert(err);
});
}
return {replaceStyle, save, toggleStyle, updateStyleMeta, isDirty: dirty.isDirty};
}