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Create lib/keys.ts

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This commit is contained in:
Henrik Giesel 2021-06-29 17:15:07 +02:00
parent 5c2911c053
commit 4601ebb347
2 changed files with 59 additions and 50 deletions
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56
ts/lib/keys.ts
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@ -0,0 +1,56 @@
// Copyright: Ankitects Pty Ltd and contributors
// License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
import * as tr from "./i18n";
import { isApplePlatform } from "./platform";
export type Modifier = "Control" | "Alt" | "Shift" | "Meta";
// how modifiers are mapped
const allModifiers: Modifier[] = ["Control", "Alt", "Shift", "Meta"];
const platformModifiers = isApplePlatform()
? ["Meta", "Alt", "Shift", "Control"]
: ["Control", "Alt", "Shift", "OS"];
export const checkModifiers =
(required: Modifier[], optional: Modifier[] = []) =>
(event: KeyboardEvent): boolean => {
return allModifiers.reduce(
(
matches: boolean,
currentModifier: Modifier,
currentIndex: number
): boolean =>
matches &&
(optional.includes(currentModifier as Modifier) ||
event.getModifierState(platformModifiers[currentIndex]) ===
required.includes(currentModifier)),
true
);
};
export const hasModifier = (modifier: Modifier) => (event: KeyboardEvent): boolean => event.getModifierState(platformModifiers[allModifiers.indexOf(modifier)]);
export function isControl(key: string): boolean {
return key === platformModifiers[0];
}
export function isShift(key: string): boolean {
return key === platformModifiers[2];
}
export function modifiersToPlatformString(modifiers: string[]): string {
const displayModifiers = isApplePlatform()
? ["^", "⌥", "⇧", "⌘"]
: [`${tr.keyboardCtrl()}+`, "Alt+", `${tr.keyboardShift()}+`, "Win+"];
let result = "";
for (const modifier of modifiers) {
result += displayModifiers[platformModifiers.indexOf(modifier)];
}
return result;
}

53
ts/lib/shortcuts.ts
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@ -1,38 +1,10 @@
// Copyright: Ankitects Pty Ltd and contributors
// License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
import * as tr from "./i18n";
import { isApplePlatform } from "./platform";
import type { Modifier } from "./keys";
import { registerPackage } from "./register-package";
export type Modifier = "Control" | "Alt" | "Shift" | "Meta";
// how modifiers are mapped
const platformModifiers = isApplePlatform()
? ["Meta", "Alt", "Shift", "Control"]
: ["Control", "Alt", "Shift", "OS"];
export function isControl(key: string): boolean {
return key === platformModifiers[0];
}
export function isShift(key: string): boolean {
return key === platformModifiers[2];
}
function modifiersToPlatformString(modifiers: string[]): string {
const displayModifiers = isApplePlatform()
? ["^", "⌥", "⇧", "⌘"]
: [`${tr.keyboardCtrl()}+`, "Alt+", `${tr.keyboardShift()}+`, "Win+"];
let result = "";
for (const modifier of modifiers) {
result += displayModifiers[platformModifiers.indexOf(modifier)];
}
return result;
}
import { modifiersToPlatformString, checkModifiers } from "./keys";
const keyCodeLookup = {
Backspace: 8,
@ -90,25 +62,6 @@ function checkKey(event: KeyboardEvent, key: number): boolean {
return event.which === key;
}
const allModifiers: Modifier[] = ["Control", "Alt", "Shift", "Meta"];
const checkModifiers =
(required: Modifier[], optional: Modifier[] = []) =>
(event: KeyboardEvent): boolean => {
return allModifiers.reduce(
(
matches: boolean,
currentModifier: Modifier,
currentIndex: number
): boolean =>
matches &&
(optional.includes(currentModifier as Modifier) ||
event.getModifierState(platformModifiers[currentIndex]) ===
required.includes(currentModifier)),
true
);
};
function partition<T>(predicate: (t: T) => boolean, items: T[]): [T[], T[]] {
const trueItems: T[] = [];
const falseItems: T[] = [];