util.js
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import Vue from 'vue';
import iView from '../../src/index';
Vue.use(iView);
let id = 0;
const createElm = function() {
const elm = document.createElement('div');
elm.id = 'app' + ++id;
document.body.appendChild(elm);
return elm;
};
/**
* 回收 vm
* @param {Object} vm
*/
exports.destroyVM = function(vm) {
vm.$el &&
vm.$el.parentNode &&
vm.$el.parentNode.removeChild(vm.$el);
};
/**
* 创建一个 Vue 的实例对象
* @param {Object|String} Compo 组件配置，可直接传 template
* @param {Boolean=false} mounted 是否添加到 DOM 上
* @return {Object} vm
*/
exports.createVue = function(Compo, mounted = false) {
const elm = createElm();
if (Object.prototype.toString.call(Compo) === '[object String]') {
Compo = { template: Compo };
}
return new Vue(Compo).$mount(mounted === false ? null : elm);
};
/**
* 创建一个测试组件实例
* @link http://vuejs.org/guide/unit-testing.html#Writing-Testable-Components
* @param {Object} Compo - 组件对象
* @param {Object} propsData - props 数据
* @param {Boolean=false} mounted - 是否添加到 DOM 上
* @return {Object} vm
*/
exports.createTest = function(Compo, propsData = {}, mounted = false) {
if (propsData === true || propsData === false) {
mounted = propsData;
propsData = {};
}
const elm = createElm();
const Ctor = Vue.extend(Compo);
return new Ctor({ propsData }).$mount(mounted === false ? null : elm);
};
/**
* Transform Date string (yyyy-mm-dd hh:mm:ss) to Date object
* @param {String}
*/
exports.stringToDate = function(str) {
const parts = str.split(/[^\d]/).filter(Boolean);
parts[1] = parts[1] - 1;
return new Date(...parts);
};
/**
* Transform Date to yyyy-mm-dd string
* @param {Date}
*/
exports.dateToString = function(d) {
return [d.getFullYear(), d.getMonth() + 1, d.getDate()].map(nr => nr > 9 ? nr : '0' + nr).join('-');
};
/**
* 触发一个事件
* mouseenter, mouseleave, mouseover, keyup, change, click 等
* @param {Element} elm
* @param {String} name
* @param {*} opts
*/
exports.triggerEvent = function(elm, name, ...opts) {
let eventName;
if (/^mouse|click/.test(name)) {
eventName = 'MouseEvents';
} else if (/^key/.test(name)) {
eventName = 'KeyboardEvent';
} else {
eventName = 'HTMLEvents';
}
const evt = document.createEvent(eventName);
evt.initEvent(name, ...opts);
elm.dispatchEvent
? elm.dispatchEvent(evt)
: elm.fireEvent('on' + name, evt);
return elm;
};
/**
* Wait for components inner async process, when this.$nextTick is not enough
* @param {Function} the condition to verify before calling the callback
* @param {Function} the callback to call when condition is true
*/
exports.waitForIt = function waitForIt(condition, callback) {
if (condition()) callback();
else setTimeout(() => waitForIt(condition, callback), 50);
};
/**
* Call a components .$nextTick in a promissified way
* @param {Vue Component} the component to work with
*/
exports.promissedTick = component => {
return new Promise((resolve, reject) => {
component.$nextTick(resolve);
});
};