db-lgtv-focus-engine/event/keyup.js

the Best TV focus engine

export function bindKeyupListener(focus_engine) {
    document.onkeyup = (e) => {
        focus_engine.last_key_up = e
        if (window['焦点框架-loading-加载中']) return
        let focused_leaf = focus_engine.findFocusedLeaf()
        if (!focused_leaf) return
        let code_enum = {}
        for(let key in  focus_engine.options.KEYS){
            for (let code of focus_engine.options.KEYS[key]) {
                code_enum[code] = key
            }
        }
        let _e = new Event("keyup")
        let _default = true
        _e.code = e.which
        _e.preventDefault = () => {
            _default = false
        }
        focused_leaf.el.dispatchEvent(_e)
        if (!_default) return 
        if (!code_enum[e.which]) return
        e.preventDefault()
        switch(code_enum[e.which]) {
            case 'ok': {
                setTimeout(() => {
                    if (focus_engine.options.KEY_TYPE !== 'up') return
                    focused_leaf.el.dispatchEvent(new Event("ok"))
                    if (focused_leaf.parent) {
                        let _e = new Event("ok")
                        _e.leaf = focused_leaf
                        focused_leaf.parent.el.dispatchEvent(_e)
                    }
                })
                break
            }
        }
    }
}

export function unbindKeyupListener(focus_engine) {
    document.onkeyup = (e) => {
    }
}