import Vue from 'vue';
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import Main from './main.vue';
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import { PopupManager } from 'element-ui/src/utils/popup';
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import { isVNode } from 'element-ui/src/utils/vdom';
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import { isObject } from 'element-ui/src/utils/types';
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let MessageConstructor = Vue.extend(Main);
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let instance;
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let instances = [];
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let seed = 1;
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const Message = function(options) {
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if (Vue.prototype.$isServer) return;
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options = options || {};
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if (typeof options === 'string') {
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options = {
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message: options
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};
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}
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let userOnClose = options.onClose;
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let id = 'message_' + seed++;
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options.onClose = function() {
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Message.close(id, userOnClose);
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};
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instance = new MessageConstructor({
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data: options
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});
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instance.id = id;
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if (isVNode(instance.message)) {
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instance.$slots.default = [instance.message];
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instance.message = null;
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}
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instance.$mount();
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document.body.appendChild(instance.$el);
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let verticalOffset = options.offset || 20;
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instances.forEach(item => {
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verticalOffset += item.$el.offsetHeight + 16;
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});
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instance.verticalOffset = verticalOffset;
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instance.visible = true;
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instance.$el.style.zIndex = PopupManager.nextZIndex();
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instances.push(instance);
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return instance;
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};
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['success', 'warning', 'info', 'error'].forEach(type => {
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Message[type] = (options) => {
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if (isObject(options) && !isVNode(options)) {
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return Message({
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...options,
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type
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});
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}
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return Message({
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type,
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message: options
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});
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};
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});
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Message.close = function(id, userOnClose) {
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let len = instances.length;
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let index = -1;
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let removedHeight;
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for (let i = 0; i < len; i++) {
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if (id === instances[i].id) {
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removedHeight = instances[i].$el.offsetHeight;
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index = i;
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if (typeof userOnClose === 'function') {
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userOnClose(instances[i]);
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}
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instances.splice(i, 1);
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break;
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}
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}
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if (len <= 1 || index === -1 || index > instances.length - 1) return;
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for (let i = index; i < len - 1 ; i++) {
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let dom = instances[i].$el;
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dom.style['top'] =
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parseInt(dom.style['top'], 10) - removedHeight - 16 + 'px';
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}
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};
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Message.closeAll = function() {
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for (let i = instances.length - 1; i >= 0; i--) {
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instances[i].close();
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}
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};
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export default Message;
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