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[feat] Add optional keybindings #117

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[feat] Add optional keybindings #117

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64 changes: 50 additions & 14 deletions codejar.ts
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Original file line number Diff line number Diff line change
@@ -1,15 +1,31 @@
const globalWindow = window

type JarFunctions = {
updateCode: (code: string) => void;
save: () => Position;
restore: (pos: Position) => void;
};

type Keybinding = {
key: string;
ctrl?: boolean;
meta?: boolean;
shift?: boolean;
alt?: boolean;
action: (editor: HTMLElement, jar: JarFunctions) => void;
};

type Options = {
tab: string
indentOn: RegExp
moveToNewLine: RegExp
spellcheck: boolean
catchTab: boolean
preserveIdent: boolean
addClosing: boolean
history: boolean
window: typeof window
tab: string;
indentOn: RegExp;
moveToNewLine: RegExp;
spellcheck: boolean;
catchTab: boolean;
preserveIdent: boolean;
addClosing: boolean;
history: boolean;
window: typeof window;
keybindings?: Keybinding[];
}

type HistoryRecord = {
Expand Down Expand Up @@ -85,6 +101,23 @@ export function CodeJar(editor: HTMLElement, highlight: (e: HTMLElement, pos?: P
}
}, 300)

const handleKeybindings = (event: KeyboardEvent) => {
if (options.keybindings) {
for (const binding of options.keybindings) {
if (
event.key.toLowerCase() === binding.key.toLowerCase() &&
!!binding.ctrl === event.ctrlKey &&
!!binding.meta === event.metaKey &&
!!binding.shift === event.shiftKey &&
!!binding.alt === event.altKey
) {
event.preventDefault();
binding.action(editor, { save, restore, updateCode });
}
}
}
};

const on = <K extends keyof HTMLElementEventMap>(type: K, fn: (event: HTMLElementEventMap[K]) => void) => {
listeners.push([type, fn])
editor.addEventListener(type, fn)
Expand All @@ -94,6 +127,7 @@ export function CodeJar(editor: HTMLElement, highlight: (e: HTMLElement, pos?: P
if (event.defaultPrevented) return

prev = toString()
handleKeybindings(event)
if (options.preserveIdent) handleNewLine(event)
else legacyNewLineFix(event)
if (options.catchTab) handleTabCharacters(event)
Expand Down Expand Up @@ -538,15 +572,17 @@ export function CodeJar(editor: HTMLElement, highlight: (e: HTMLElement, pos?: P
return editor.getRootNode().getSelection() as Selection
}

function updateCode(code: string, callOnUpdate: boolean = true) {
editor.textContent = code
doHighlight(editor)
callOnUpdate && onUpdate(code)
}

return {
updateOptions(newOptions: Partial<Options>) {
Object.assign(options, newOptions)
},
updateCode(code: string, callOnUpdate: boolean = true) {
editor.textContent = code
doHighlight(editor)
callOnUpdate && onUpdate(code)
},
updateCode,
onUpdate(callback: (code: string) => void) {
onUpdate = callback
},
Expand Down