mj-context-menu/js/variable.js

A generic context menu

import * as MenuUtil from './menu_util.js';
export class Variable {
    static fromJson(_factory, { name, getter, setter }, pool) {
        const variable = new this(name, getter, setter);
        pool.insert(variable);
    }
    constructor(_name, getter, setter) {
        this._name = _name;
        this.getter = getter;
        this.setter = setter;
        this.items = [];
    }
    get name() {
        return this._name;
    }
    getValue(node) {
        try {
            return this.getter(node);
        }
        catch (e) {
            MenuUtil.error(e, 'Command of variable ' + this.name + ' failed.');
            return null;
        }
    }
    setValue(value, node) {
        try {
            this.setter(value, node);
        }
        catch (e) {
            MenuUtil.error(e, 'Command of variable ' + this.name + ' failed.');
        }
        this.update();
    }
    register(item) {
        if (this.items.indexOf(item) === -1) {
            this.items.push(item);
        }
    }
    unregister(item) {
        const index = this.items.indexOf(item);
        if (index !== -1) {
            this.items.splice(index, 1);
        }
    }
    update() {
        this.items.forEach((x) => x.update());
    }
    registerCallback(func) {
        this.items.forEach((x) => x.registerCallback(func));
    }
    unregisterCallback(func) {
        this.items.forEach((x) => x.unregisterCallback(func));
    }
    toJson() {
        return {
            type: 'variable',
            name: this.name,
            getter: this.getter.toString(),
            setter: this.setter.toString()
        };
    }
}
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