marktext/src/main/keyboard/shortcutHandler.js
2022-01-02 21:13:37 +01:00

356 lines
11 KiB
JavaScript

import { Menu } from 'electron'
import fs from 'fs-extra'
import path from 'path'
import log from 'electron-log'
import isAccelerator from 'electron-is-accelerator'
import electronLocalshortcut from '@hfelix/electron-localshortcut'
import { isFile2 } from 'common/filesystem'
import { isOsx } from '../config'
import { getKeyboardLanguage, getVirtualLetters } from '../keyboard'
const tabSwitchBaseStroke = (isOsx) ? 'Ctrl' : 'Alt'
// Problematic key bindings:
// Aidou: Ctrl+/ -> dead key
// Inline Code: Ctrl+` -> dead key
// Upgrade Heading: Ctrl+= -> points to Ctrl+Plus which is ok; Ctrl+Plus is broken
class Keybindings {
/**
* @param {string} userDataPath The user data path.
*/
constructor (userDataPath) {
this.configPath = path.join(userDataPath, 'keybindings.json')
this.keys = new Map([
// MarkText - macOS only
['mt.hide', 'Command+H'],
['mt.hide-others', 'Command+Alt+H'],
// File menu
['file.new-file', 'CmdOrCtrl+N'],
['file.new-tab', 'CmdOrCtrl+T'],
['file.open-file', 'CmdOrCtrl+O'],
['file.open-folder', 'CmdOrCtrl+Shift+O'],
['file.save', 'CmdOrCtrl+S'],
['file.save-as', 'CmdOrCtrl+Shift+S'],
['file.preferences', 'CmdOrCtrl+,'], // marktext menu in macOS
['file.close-tab', 'CmdOrCtrl+W'],
['file.close-window', 'CmdOrCtrl+Shift+W'],
['file.quit', 'CmdOrCtrl+Q'],
// Edit menu
['edit.undo', 'CmdOrCtrl+Z'],
['edit.redo', 'CmdOrCtrl+Shift+Z'],
['edit.cut', 'CmdOrCtrl+X'],
['edit.copy', 'CmdOrCtrl+C'],
['edit.paste', 'CmdOrCtrl+V'],
['edit.copy-as-markdown', 'CmdOrCtrl+Shift+C'],
['edit.copy-as-plaintext', 'CmdOrCtrl+Shift+V'],
['edit.select-all', 'CmdOrCtrl+A'],
['edit.duplicate', 'CmdOrCtrl+Alt+D'],
['edit.create-paragraph', 'Shift+CmdOrCtrl+N'],
['edit.delete-paragraph', 'Shift+CmdOrCtrl+D'],
['edit.find', 'CmdOrCtrl+F'],
['edit.find-next', isOsx ? 'Cmd+G' : 'F3'],
['edit.find-previous', isOsx ? 'Cmd+Shift+G' : 'Shift+F3'],
['edit.replace', 'CmdOrCtrl+Alt+F'],
['edit.find-in-folder', 'Shift+CmdOrCtrl+F'],
['edit.aidou', 'CmdOrCtrl+/'],
['edit.screenshot', 'CmdOrCtrl+Alt+A'], // macOS only
// Paragraph menu
['paragraph.heading-1', 'CmdOrCtrl+1'],
['paragraph.heading-2', 'CmdOrCtrl+2'],
['paragraph.heading-3', 'CmdOrCtrl+3'],
['paragraph.heading-4', 'CmdOrCtrl+4'],
['paragraph.heading-5', 'CmdOrCtrl+5'],
['paragraph.heading-6', 'CmdOrCtrl+6'],
['paragraph.upgrade-heading', 'CmdOrCtrl+='],
['paragraph.degrade-heading', 'CmdOrCtrl+-'],
['paragraph.table', 'CmdOrCtrl+Shift+T'],
['paragraph.code-fence', 'CmdOrCtrl+Alt+C'],
['paragraph.quote-block', 'CmdOrCtrl+Alt+Q'],
['paragraph.math-formula', 'CmdOrCtrl+Alt+M'],
['paragraph.html-block', isOsx ? 'CmdOrCtrl+Alt+J' : 'CmdOrCtrl+Alt+H'],
['paragraph.order-list', 'CmdOrCtrl+Alt+O'],
['paragraph.bullet-list', 'CmdOrCtrl+Alt+U'],
['paragraph.task-list', 'CmdOrCtrl+Alt+X'],
['paragraph.loose-list-item', 'CmdOrCtrl+Alt+L'],
['paragraph.paragraph', 'CmdOrCtrl+0'],
['paragraph.horizontal-line', 'CmdOrCtrl+Alt+-'],
['paragraph.front-matter', 'CmdOrCtrl+Alt+Y'],
// Format menu
['format.strong', 'CmdOrCtrl+B'],
['format.emphasis', 'CmdOrCtrl+I'],
['format.underline', 'CmdOrCtrl+U'],
['format.highlight', 'Shift+CmdOrCtrl+H'],
['format.inline-code', 'CmdOrCtrl+`'],
['format.inline-math', 'Shift+CmdOrCtrl+M'],
['format.strike', 'CmdOrCtrl+D'],
['format.hyperlink', 'CmdOrCtrl+L'],
['format.image', 'CmdOrCtrl+Shift+I'],
['format.clear-format', 'Shift+CmdOrCtrl+R'],
// Window menu
['window.minimize', 'CmdOrCtrl+M'],
['window.toggle-full-screen', isOsx ? 'Ctrl+Command+F' : 'F11'],
// View menu
['view.command-palette', 'CmdOrCtrl+Shift+P'],
['view.source-code-mode', 'CmdOrCtrl+Alt+S'],
['view.typewriter-mode', 'CmdOrCtrl+Alt+T'],
['view.focus-mode', 'CmdOrCtrl+Shift+J'],
['view.toggle-sidebar', 'CmdOrCtrl+J'],
['view.toggle-toc', 'CmdOrCtrl+K'],
['view.toggle-tabbar', 'CmdOrCtrl+Alt+B'],
['view.toggle-dev-tools', 'CmdOrCtrl+Alt+I'],
['view.dev-reload', 'CmdOrCtrl+R'],
// Misc
['tabs.cycle-forward', 'CmdOrCtrl+Tab'],
['tabs.cycle-backward', 'CmdOrCtrl+Shift+Tab'],
['tabs.switch-to-left', 'CmdOrCtrl+PageUp'],
['tabs.switch-to-right', 'CmdOrCtrl+PageDown'],
['tabs.switch-to-first', `${tabSwitchBaseStroke}+1`],
['tabs.switch-to-second', `${tabSwitchBaseStroke}+2`],
['tabs.switch-to-third', `${tabSwitchBaseStroke}+3`],
['tabs.switch-to-fourth', `${tabSwitchBaseStroke}+4`],
['tabs.switch-to-fifth', `${tabSwitchBaseStroke}+5`],
['tabs.switch-to-sixth', `${tabSwitchBaseStroke}+6`],
['tabs.switch-to-seventh', `${tabSwitchBaseStroke}+7`],
['tabs.switch-to-eighth', `${tabSwitchBaseStroke}+8`],
['tabs.switch-to-ninth', `${tabSwitchBaseStroke}+9`],
['tabs.switch-to-tenth', `${tabSwitchBaseStroke}+0`],
['file.quick-open', 'CmdOrCtrl+P']
])
// Fix non-US keyboards
this.mnemonics = new Map()
this._fixLayout()
// Load user-defined keybindings
this._loadLocalKeybindings()
}
getAccelerator (id) {
const name = this.keys.get(id)
if (!name) {
return ''
}
return name
}
registerKeyHandlers (win, acceleratorMap) {
for (const item of acceleratorMap) {
let { accelerator } = item
// Fix broken shortcuts because of dead keys or non-US keyboard problems. We bind the
// shortcut to another accelerator because of key mapping issues. E.g: 'Alt+/' is not
// available on a German keyboard, because you have to press 'Shift+7' to produce '/'.
// In this case we can remap the accelerator to 'Alt+7' or 'Ctrl+Shift+7'.
const acceleratorFix = this.mnemonics.get(accelerator)
if (acceleratorFix) {
accelerator = acceleratorFix
}
// Regisiter shortcuts on the BrowserWindow instead of using Chromium's native menu.
// This makes it possible to receive key down events before Chromium/Electron and we
// can handle reserved Chromium shortcuts. Afterwards prevent the default action of
// the event so the native menu is not triggered.
electronLocalshortcut.register(win, accelerator, () => {
if (global.MARKTEXT_DEBUG && process.env.MARKTEXT_DEBUG_KEYBOARD) {
console.log(`You pressed ${accelerator}`)
}
callMenuCallback(item, win)
return true // prevent default action
})
}
}
// --- private --------------------------------
_fixLayout () {
// Fix wrong virtual key mapping on non-QWERTY layouts
electronLocalshortcut.updateVirtualKeys(getVirtualLetters())
// Fix broken shortcuts and dead keys
const lang = getKeyboardLanguage()
switch (lang) {
// Fix aidou and inline code
case 'ch':
case 'de':
case 'dk':
case 'fi':
case 'no':
case 'se':
this._fixInlineCode()
if (!isOsx) {
this._fixAidou()
}
break
// Fix aidou only
case 'es':
case 'fr':
case 'hr':
case 'it':
case 'pl':
case 'pt':
if (!isOsx) {
this._fixAidou()
}
break
// Custom layouts
case 'bg':
if (!isOsx) {
this.mnemonics.set('CmdOrCtrl+/', 'CmdOrCtrl+8')
this._fixInlineCode()
}
break
}
}
_fixAidou () {
this.mnemonics.set('CmdOrCtrl+/', 'CmdOrCtrl+7')
}
// Fix dead backquote key on layouts like German
_fixInlineCode () {
this.keys.set('format.inline-code', 'CmdOrCtrl+Shift+B')
}
_loadLocalKeybindings () {
if (global.MARKTEXT_SAFE_MODE || !isFile2(this.configPath)) {
return
}
const json = fs.readJsonSync(this.configPath, { throws: false })
if (!json || typeof json !== 'object') {
log.warn('Invalid keybindings.json configuration.')
return
}
// keybindings.json example:
// {
// "file.save": "CmdOrCtrl+S",
// "file.save-as": "CmdOrCtrl+Shift+S"
// }
const userAccelerators = new Map()
for (const key in json) {
if (this.keys.has(key)) {
const value = json[key]
if (typeof value === 'string') {
if (value.length === 0) {
// Unset key
userAccelerators.set(key, '')
} else if (isAccelerator(value)) {
userAccelerators.set(key, value)
}
}
}
}
// Check for duplicate user shortcuts
for (const [keyA, valueA] of userAccelerators) {
for (const [keyB, valueB] of userAccelerators) {
if (valueA !== '' && keyA !== keyB && this._isEqualAccelerator(valueA, valueB)) {
const err = `Invalid keybindings.json configuration: Duplicate value for "${keyA}" and "${keyB}"!`
console.log(err)
log.error(err)
return
}
}
}
if (userAccelerators.size === 0) {
return
}
// Deep clone shortcuts
const accelerators = new Map(this.keys)
// Check for duplicate shortcuts
for (const [userKey, userValue] of userAccelerators) {
for (const [key, value] of accelerators) {
if (this._isEqualAccelerator(value, userValue)) {
// Unset default key
accelerators.set(key, '')
// A accelerator should only exist once in the default map.
break
}
}
accelerators.set(userKey, userValue)
}
// Update key bindings
this.keys = accelerators
}
_isEqualAccelerator (a, b) {
a = a.toLowerCase().replace('cmdorctrl', 'ctrl').replace('command', 'ctrl')
b = b.toLowerCase().replace('cmdorctrl', 'ctrl').replace('command', 'ctrl')
const i1 = a.indexOf('+')
const i2 = b.indexOf('+')
if (i1 === -1 && i2 === -1) {
return a === b
} else if (i1 === -1 || i2 === -1) {
return false
}
const keysA = a.split('+')
const keysB = b.split('+')
if (keysA.length !== keysB.length) {
return false
}
const intersection = new Set([...keysA, ...keysB])
return intersection.size === keysB.length
}
}
export const parseMenu = menuTemplate => {
const { submenu, accelerator, click, id, visible } = menuTemplate
const items = []
if (Array.isArray(menuTemplate)) {
for (const item of menuTemplate) {
const subitems = parseMenu(item)
if (subitems) items.push(...subitems)
}
} else if (submenu) {
const subitems = parseMenu(submenu)
if (subitems) items.push(...subitems)
} else if ((visible === undefined || visible) && accelerator && click) {
items.push({
accelerator,
click,
id // may be null
})
}
return items.length === 0 ? null : items
}
const callMenuCallback = (menuInfo, win) => {
const { click, id } = menuInfo
if (click) {
let menuItem = null
if (id) {
const menus = Menu.getApplicationMenu()
menuItem = menus.getMenuItemById(id)
}
// Allow all shortcuts/menus without id and only enabled menus with id (GH#980).
if (!menuItem || menuItem.enabled !== false) {
click(menuItem, win)
}
} else {
console.error('ERROR: callback function is not defined.')
}
}
export default Keybindings