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- import { flipCtrlCmd, mac, presto } from "../util/browser.js"
- import { map } from "../util/misc.js"
- import { keyNames } from "./keynames.js"
- export let keyMap = {}
- keyMap.basic = {
- "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown",
- "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown",
- "Delete": "delCharAfter", "Backspace": "delCharBefore", "Shift-Backspace": "delCharBefore",
- "Tab": "defaultTab", "Shift-Tab": "indentAuto",
- "Enter": "newlineAndIndent", "Insert": "toggleOverwrite",
- "Esc": "singleSelection"
- }
- // Note that the save and find-related commands aren't defined by
- // default. User code or addons can define them. Unknown commands
- // are simply ignored.
- keyMap.pcDefault = {
- "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo",
- "Ctrl-Home": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Up": "goLineUp", "Ctrl-Down": "goLineDown",
- "Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd",
- "Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find",
- "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll",
- "Ctrl-[": "indentLess", "Ctrl-]": "indentMore",
- "Ctrl-U": "undoSelection", "Shift-Ctrl-U": "redoSelection", "Alt-U": "redoSelection",
- "fallthrough": "basic"
- }
- // Very basic readline/emacs-style bindings, which are standard on Mac.
- keyMap.emacsy = {
- "Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown",
- "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd", "Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp",
- "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine",
- "Ctrl-T": "transposeChars", "Ctrl-O": "openLine"
- }
- keyMap.macDefault = {
- "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo",
- "Cmd-Home": "goDocStart", "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft",
- "Alt-Right": "goGroupRight", "Cmd-Left": "goLineLeft", "Cmd-Right": "goLineRight", "Alt-Backspace": "delGroupBefore",
- "Ctrl-Alt-Backspace": "delGroupAfter", "Alt-Delete": "delGroupAfter", "Cmd-S": "save", "Cmd-F": "find",
- "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll",
- "Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delWrappedLineLeft", "Cmd-Delete": "delWrappedLineRight",
- "Cmd-U": "undoSelection", "Shift-Cmd-U": "redoSelection", "Ctrl-Up": "goDocStart", "Ctrl-Down": "goDocEnd",
- "fallthrough": ["basic", "emacsy"]
- }
- keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault
- // KEYMAP DISPATCH
- function normalizeKeyName(name) {
- let parts = name.split(/-(?!$)/)
- name = parts[parts.length - 1]
- let alt, ctrl, shift, cmd
- for (let i = 0; i < parts.length - 1; i++) {
- let mod = parts[i]
- if (/^(cmd|meta|m)$/i.test(mod)) cmd = true
- else if (/^a(lt)?$/i.test(mod)) alt = true
- else if (/^(c|ctrl|control)$/i.test(mod)) ctrl = true
- else if (/^s(hift)?$/i.test(mod)) shift = true
- else throw new Error("Unrecognized modifier name: " + mod)
- }
- if (alt) name = "Alt-" + name
- if (ctrl) name = "Ctrl-" + name
- if (cmd) name = "Cmd-" + name
- if (shift) name = "Shift-" + name
- return name
- }
- // This is a kludge to keep keymaps mostly working as raw objects
- // (backwards compatibility) while at the same time support features
- // like normalization and multi-stroke key bindings. It compiles a
- // new normalized keymap, and then updates the old object to reflect
- // this.
- export function normalizeKeyMap(keymap) {
- let copy = {}
- for (let keyname in keymap) if (keymap.hasOwnProperty(keyname)) {
- let value = keymap[keyname]
- if (/^(name|fallthrough|(de|at)tach)$/.test(keyname)) continue
- if (value == "...") { delete keymap[keyname]; continue }
- let keys = map(keyname.split(" "), normalizeKeyName)
- for (let i = 0; i < keys.length; i++) {
- let val, name
- if (i == keys.length - 1) {
- name = keys.join(" ")
- val = value
- } else {
- name = keys.slice(0, i + 1).join(" ")
- val = "..."
- }
- let prev = copy[name]
- if (!prev) copy[name] = val
- else if (prev != val) throw new Error("Inconsistent bindings for " + name)
- }
- delete keymap[keyname]
- }
- for (let prop in copy) keymap[prop] = copy[prop]
- return keymap
- }
- export function lookupKey(key, map, handle, context) {
- map = getKeyMap(map)
- let found = map.call ? map.call(key, context) : map[key]
- if (found === false) return "nothing"
- if (found === "...") return "multi"
- if (found != null && handle(found)) return "handled"
- if (map.fallthrough) {
- if (Object.prototype.toString.call(map.fallthrough) != "[object Array]")
- return lookupKey(key, map.fallthrough, handle, context)
- for (let i = 0; i < map.fallthrough.length; i++) {
- let result = lookupKey(key, map.fallthrough[i], handle, context)
- if (result) return result
- }
- }
- }
- // Modifier key presses don't count as 'real' key presses for the
- // purpose of keymap fallthrough.
- export function isModifierKey(value) {
- let name = typeof value == "string" ? value : keyNames[value.keyCode]
- return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod"
- }
- export function addModifierNames(name, event, noShift) {
- let base = name
- if (event.altKey && base != "Alt") name = "Alt-" + name
- if ((flipCtrlCmd ? event.metaKey : event.ctrlKey) && base != "Ctrl") name = "Ctrl-" + name
- if ((flipCtrlCmd ? event.ctrlKey : event.metaKey) && base != "Mod") name = "Cmd-" + name
- if (!noShift && event.shiftKey && base != "Shift") name = "Shift-" + name
- return name
- }
- // Look up the name of a key as indicated by an event object.
- export function keyName(event, noShift) {
- if (presto && event.keyCode == 34 && event["char"]) return false
- let name = keyNames[event.keyCode]
- if (name == null || event.altGraphKey) return false
- // Ctrl-ScrollLock has keyCode 3, same as Ctrl-Pause,
- // so we'll use event.code when available (Chrome 48+, FF 38+, Safari 10.1+)
- if (event.keyCode == 3 && event.code) name = event.code
- return addModifierNames(name, event, noShift)
- }
- export function getKeyMap(val) {
- return typeof val == "string" ? keyMap[val] : val
- }
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