tridactyl/src/controller.ts
2018-04-13 19:28:03 +01:00

126 lines
4.3 KiB
TypeScript

import { MsgSafeKeyboardEvent, MsgSafeNode } from "./msgsafe"
import { isTextEditable } from "./dom"
import { isSimpleKey } from "./keyseq"
import state from "./state"
import { repeat } from "./excmds_background"
import Logger from "./logging"
import { parser as exmode_parser } from "./parsers/exmode"
import { parser as hintmode_parser } from "./hinting_background"
import { parser as findmode_parser } from "./finding_background"
import * as normalmode from "./parsers/normalmode"
import * as insertmode from "./parsers/insertmode"
import * as ignoremode from "./parsers/ignoremode"
import * as gobblemode from "./parsers/gobblemode"
import * as inputmode from "./parsers/inputmode"
const logger = new Logger("controller")
/** Accepts keyevents, resolves them to maps, maps to exstrs, executes exstrs */
function* ParserController() {
const parsers = {
normal: normalmode.parser,
insert: insertmode.parser,
ignore: ignoremode.parser,
hint: hintmode_parser,
find: findmode_parser,
gobble: gobblemode.parser,
input: inputmode.parser,
}
while (true) {
let ex_str = ""
let keys = []
try {
while (true) {
let keyevent: MsgSafeKeyboardEvent = yield
let keypress = keyevent.key
// This code was sort of the cause of the most serious bug in Tridactyl
// to date (March 2018).
// https://github.com/cmcaine/tridactyl/issues/311
if (
state.mode != "ignore" &&
state.mode != "hint" &&
state.mode != "input" &&
state.mode != "find"
) {
if (isTextEditable(keyevent.target)) {
if (state.mode !== "insert") {
state.mode = "insert"
}
} else if (state.mode === "insert") {
state.mode = "normal"
}
}
logger.debug(keyevent, state.mode)
// Special keys (e.g. Backspace) are not handled properly
// yet. So drop them. This also drops all modifier keys.
// When we put in handling for other special keys, remember
// to continue to ban modifiers.
if (state.mode === "normal" && !isSimpleKey(keyevent)) {
continue
}
keys.push(keypress)
let response = undefined
switch (state.mode) {
case "normal":
response = (parsers[state.mode] as any)(keys)
break
default:
response = (parsers[state.mode] as any)([keyevent])
break
}
logger.debug(keys, response)
if (response.ex_str) {
ex_str = response.ex_str
break
} else {
keys = response.keys
}
}
acceptExCmd(ex_str)
} catch (e) {
// Rumsfeldian errors are caught here
console.error("Tridactyl ParserController fatally wounded:", e)
}
}
}
let generator = ParserController() // var rather than let stops weirdness in repl.
generator.next()
/** Feed keys to the ParserController */
export function acceptKey(keyevent: MsgSafeKeyboardEvent) {
generator.next(keyevent)
}
/** Parse and execute ExCmds */
export function acceptExCmd(ex_str: string) {
// TODO: Errors should go to CommandLine.
try {
let [func, args] = exmode_parser(ex_str)
// Stop the repeat excmd from recursing.
if (func !== repeat) state.last_ex_str = ex_str
try {
func(...args)
} catch (e) {
// Errors from func are caught here (e.g. no next tab)
console.error(e)
}
} catch (e) {
// Errors from parser caught here
console.error(e)
}
}
import { activeTabId } from "./lib/webext"
browser.webNavigation.onBeforeNavigate.addListener(async function(details) {
if (details.frameId === 0 && details.tabId === (await activeTabId())) {
state.mode = "normal"
}
})
browser.tabs.onActivated.addListener(() => (state.mode = "normal"))