90 lines
1.8 KiB
JavaScript
90 lines
1.8 KiB
JavaScript
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/**
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* checkbox.js - checkbox element for blessed
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* Copyright (c) 2013-2015, Christopher Jeffrey and contributors (MIT License).
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* https://github.com/chjj/blessed
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*/
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/**
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* Modules
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*/
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var helpers = require('../helpers');
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var Node = require('./node');
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var Input = require('./input');
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/**
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* Checkbox
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*/
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function Checkbox(options) {
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var self = this;
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if (!(this instanceof Node)) {
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return new Checkbox(options);
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}
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options = options || {};
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Input.call(this, options);
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this.text = options.content || options.text || '';
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this.checked = this.value = options.checked || false;
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this.on('keypress', function(ch, key) {
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if (key.name === 'enter' || key.name === 'space') {
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self.toggle();
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self.screen.render();
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}
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});
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if (options.mouse) {
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this.on('click', function() {
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self.toggle();
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self.screen.render();
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});
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}
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this.on('focus', function(old) {
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var lpos = self.lpos;
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if (!lpos) return;
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self.screen.program.lsaveCursor('checkbox');
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self.screen.program.cup(lpos.yi, lpos.xi + 1);
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self.screen.program.showCursor();
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});
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this.on('blur', function() {
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self.screen.program.lrestoreCursor('checkbox', true);
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});
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}
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Checkbox.prototype.__proto__ = Input.prototype;
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Checkbox.prototype.type = 'checkbox';
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Checkbox.prototype.render = function() {
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this.clearPos(true);
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this.setContent('[' + (this.checked ? 'x' : ' ') + '] ' + this.text, true);
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return this._render();
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};
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Checkbox.prototype.check = function() {
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if (this.checked) return;
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this.checked = this.value = true;
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this.emit('check');
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};
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Checkbox.prototype.uncheck = function() {
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if (!this.checked) return;
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this.checked = this.value = false;
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this.emit('uncheck');
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};
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Checkbox.prototype.toggle = function() {
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return this.checked
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? this.uncheck()
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: this.check();
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};
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module.exports = Checkbox;
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