'use strict';

require('../utils/dataTransfer/Clipboard.js');
var getActiveElement = require('../utils/focus/getActiveElement.js');

function _define_property(obj, key, value) {
    if (key in obj) {
        Object.defineProperty(obj, key, {
            value: value,
            enumerable: true,
            configurable: true,
            writable: true
        });
    } else obj[key] = value;
    return obj;
}
var DOM_KEY_LOCATION = /*#__PURE__*/ function(DOM_KEY_LOCATION) {
    DOM_KEY_LOCATION[DOM_KEY_LOCATION["STANDARD"] = 0] = "STANDARD";
    DOM_KEY_LOCATION[DOM_KEY_LOCATION["LEFT"] = 1] = "LEFT";
    DOM_KEY_LOCATION[DOM_KEY_LOCATION["RIGHT"] = 2] = "RIGHT";
    DOM_KEY_LOCATION[DOM_KEY_LOCATION["NUMPAD"] = 3] = "NUMPAD";
    return DOM_KEY_LOCATION;
}({});
const modifierKeys = [
    'Alt',
    'AltGraph',
    'Control',
    'Fn',
    'Meta',
    'Shift',
    'Symbol'
];
function isModifierKey(key) {
    return modifierKeys.includes(key);
}
const modifierLocks = [
    'CapsLock',
    'FnLock',
    'NumLock',
    'ScrollLock',
    'SymbolLock'
];
function isModifierLock(key) {
    return modifierLocks.includes(key);
}
class KeyboardHost {
    isKeyPressed(keyDef) {
        return this.pressed.has(String(keyDef.code));
    }
    getPressedKeys() {
        return this.pressed.values().map((p)=>p.keyDef);
    }
    /** Press a key */ async keydown(instance, keyDef, repeat = false) {
        const key = String(keyDef.key);
        const code = String(keyDef.code);
        const target = getActiveElement.getActiveElementOrBody(instance.config.document);
        this.setKeydownTarget(target);
        this.pressed.add(code, keyDef);
        if (isModifierKey(key)) {
            this.modifiers[key] = true;
        }
        const unprevented = instance.dispatchUIEvent(target, 'keydown', {
            key,
            code,
            repeat
        });
        if (isModifierLock(key) && !this.modifiers[key]) {
            this.modifiers[key] = true;
            this.modifierLockStart[key] = true;
        }
        if (unprevented) {
            this.pressed.setUnprevented(code);
        }
        if (unprevented && this.hasKeyPress(key)) {
            instance.dispatchUIEvent(getActiveElement.getActiveElementOrBody(instance.config.document), 'keypress', {
                key,
                code,
                charCode: keyDef.key === 'Enter' ? 13 : String(keyDef.key).charCodeAt(0)
            });
        }
    }
    /** Release a key */ async keyup(instance, keyDef) {
        const key = String(keyDef.key);
        const code = String(keyDef.code);
        const unprevented = this.pressed.isUnprevented(code);
        this.pressed.delete(code);
        if (isModifierKey(key) && !this.pressed.values().find((p)=>p.keyDef.key === key)) {
            this.modifiers[key] = false;
        }
        instance.dispatchUIEvent(getActiveElement.getActiveElementOrBody(instance.config.document), 'keyup', {
            key,
            code
        }, !unprevented);
        if (isModifierLock(key) && this.modifiers[key]) {
            if (this.modifierLockStart[key]) {
                this.modifierLockStart[key] = false;
            } else {
                this.modifiers[key] = false;
            }
        }
    }
    setKeydownTarget(target) {
        if (target !== this.lastKeydownTarget) {
            this.carryChar = '';
        }
        this.lastKeydownTarget = target;
    }
    hasKeyPress(key) {
        return (key.length === 1 || key === 'Enter') && !this.modifiers.Control && !this.modifiers.Alt;
    }
    constructor(system){
        _define_property(this, "system", void 0);
        _define_property(this, "modifiers", {
            Alt: false,
            AltGraph: false,
            CapsLock: false,
            Control: false,
            Fn: false,
            FnLock: false,
            Meta: false,
            NumLock: false,
            ScrollLock: false,
            Shift: false,
            Symbol: false,
            SymbolLock: false
        });
        _define_property(this, "pressed", new class {
            add(code, keyDef) {
                var _this_registry, _code, _;
                (_ = (_this_registry = this.registry)[_code = code]) !== null && _ !== void 0 ? _ : _this_registry[_code] = {
                    keyDef,
                    unpreventedDefault: false
                };
            }
            has(code) {
                return !!this.registry[code];
            }
            setUnprevented(code) {
                const o = this.registry[code];
                if (o) {
                    o.unpreventedDefault = true;
                }
            }
            isUnprevented(code) {
                var _this_registry_code;
                return !!((_this_registry_code = this.registry[code]) === null || _this_registry_code === void 0 ? void 0 : _this_registry_code.unpreventedDefault);
            }
            delete(code) {
                delete this.registry[code];
            }
            values() {
                return Object.values(this.registry);
            }
            constructor(){
                _define_property(this, "registry", {});
            }
        }());
        _define_property(this, "carryChar", '');
        _define_property(this, "lastKeydownTarget", undefined);
        _define_property(this, "modifierLockStart", {});
        this.system = system;
    }
}

exports.DOM_KEY_LOCATION = DOM_KEY_LOCATION;
exports.KeyboardHost = KeyboardHost;
