前言
这个组件实现并不是很复杂，我会尽量注释；
这货诞生的理由就是项目刚好有一个地方必须只能选择年月，而github上ng2+日期组件都涉及到年月日或时分秒；
效果用gifcam录制的，色彩有些失真，将就吧。。动手动手出真理
效果图
实现代码
- html
<div class="only-year-month-select">
<div class="select" (click)="isExpand = !isExpand">
<input type="text" [placeholder]="placeholder" class="form-control" [(ngModel)]="selected" [disabled]="true">
</div>
<div class="list-menu" *ngIf="isExpand" [@fadeIn]="true">
<div class="sub-list1">
<p class="title">年份</p>
<ul class="year-wrap">
<li *ngFor="let i of selectYearRange;let index = index" [class.active]="i.active" (click)="actValue(selectYearRange,index)" (dblclick)="emitResult(i)">{{i.date}}</li>
</ul>
</div>
<div class="sub-list2">
<p class="title">月份</p>
<ul class="month-wrap">
<li *ngFor="let i of selectMonthRange;let index = index" [class.active]="i.active" (click)="actValue(selectMonthRange,index)" (dblclick)="emitResult(i)">{{i.date}}</li>
</ul>
</div>
</div>
</div>
- components
import { Component,OnInit,Input,Output,EventEmitter,HostListener,ElementRef } from '@angular/core';
// 动画
import { fadeIn } from '../../animation/fadeIn';
@Component({
selector: 'app-only-year-month-select',templateUrl: './only-year-month-select.component.html',styleUrls: ['./only-year-month-select.component.scss'],animations: [fadeIn]
})
export class OnlyYearMonthSelectComponent implements OnInit {
@Input() public placeholder: string;
@Input() public range: any;
@Output() public result = new EventEmitter();
public isExpand = false;
public selectYear: any;
public selectMonth: any;
public selectYearRange: Array<any> = [];
public selectMonthRange: Array<any> = [];
public selected: any;
constructor(
private _el: ElementRef
) { }
ngOnInit() {
this.getCurrentDate();
}
// 获取当前的年月
getCurrentDate(): void {
const TODAY = new Date();
this.selectYear = TODAY.getFullYear();
this.selectMonth = TODAY.getMonth() < 9 ? '0' + (TODAY.getMonth() + 1) : String(TODAY.getMonth() + 1);
this.selectYearRange.push(
{
date: this.selectYear,active: true,type: 'year'
}
);
this.selectMonthRange.push(
{
date: this.selectMonth,type: 'month'
}
);
this.selectYearRange = this.getRangeYear(this.selectYear,this.range.before,this.range.after);
this.selectMonthRange = this.getRangeMonth(this.selectMonth);
console.log(this.selectYearRange,this.selectMonthRange);
}
// 需要生成的日期范围
getRangeYear(year: number,before: number = 5,after: number = 10): any {
// console.log(year,before,after);
let _beforeYear = year;
let _afterYear = year;
for (let i = 0; i < before; i++) {
this.selectYearRange.unshift(
{
date: --_beforeYear,active: false,type: 'year'
}
);
}
for (let j = 0; j < after; j++) {
this.selectYearRange.push(
{
date: ++_afterYear,type: 'year'
}
);
}
return this.selectYearRange;
}
// 月份范围
getRangeMonth(month): any {
for (let i = 0; i < 12; i++) {
const temp = i < 9 ? '0' + (i + 1) : '' + (i + 1);
if (month !== temp) {
this.selectMonthRange.push(
{
date: temp,type: 'month'
});
}
}
this.selectMonthRange.sort(this.compare('date'));
return this.selectMonthRange;
}
// 数组对象排序
compare(property) {
return function (a,b) {
const value1 = a[property];
const value2 = b[property];
return value1 - value2;
};
}
// 年份或者月份选择
actValue(list: any,index: number) {
list.forEach((v,i) => {
if (i === index) {
v.active = true;
if (v.type === 'year') {
console.log(v.date);
this.selectYear = v.date;
}
if (v.type === 'month') {
console.log(v.date);
this.selectMonth = v.date;
}
} else {
v.active = false;
}
});
this.emitResult();
}
// 获取结果集
emitResult(e?: any) {
if (e) { // 双击则关闭弹出
this.isExpand = false;
}
this.selected = this.selectYear + '-' + this.selectMonth;
this.result.emit(this.selected);
}
// 监听全局点击事件
@HostListener('document:click',['$event.target'])
public onClick(targetElement) {
const clickedInside = this._el.nativeElement.contains(targetElement);
if (!clickedInside) {
this.isExpand = false;
this.emitResult();
}
}
}
- fadeIn.ts
// 动画的效果很简单，就是把css3的效果用js来实现，具体的效果就是渐现
// 放在突然出来一块区域的地方，触发看起来会比较顺眼，有个过渡
import { trigger,state,style,transition,animate,keyframes } from '@angular/animations';
//transition(':enter',[ ... ]); // void => *
//transition(':leave',[ ... ]); // * => void
export const fadeIn = trigger('fadeIn',[
state('in',style({ display: 'none' })),transition('void => *',[
animate(200,keyframes([
style({ height: '0',opacity: 0,offset: 0 }),style({ height: '*',opacity: 1,offset: 1 })
]))
]),transition('* => void',keyframes([
style({ height: '*',style({ height: '0',]);
// 200 是过渡时间，毫秒
// offset相当于 css3 中keyframes的百分比，，控制动画的进度的。。0 -> 1 就相当于 0% -> 100%
- 封装成一个模块给其他使用
import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import { FormsModule } from '@angular/forms';
import { OnlyYearMonthSelectComponent } from './only-year-month-select.component';
@NgModule({
imports: [
CommonModule,// 用用到一些内置的指令必须依赖这个，比如*ngIF,*ngFor
FormsModule // 有用到表单元素必须引入这货
],declarations: [OnlyYearMonthSelectComponent],// 声明年月组件
exports: [OnlyYearMonthSelectComponent] // 导出年月组件
})
export class OnlyYearMonthSelectModule { }
组件使用
温馨提示：
- 若不是以模块的方式到处，只要在使用的模块引入组件声明下就能使用
- 反之则需要引入这个模块，方可使用
局部代码
- module
// 在要使用的模块中引入
// 公用组件
import { MitEhartsModule } from '../../../widgets/mit-echarts/mit-echarts.module';
import { MitDataTableModule } from '../../../widgets/mit-data-table/mit-data-table.module';
import { MitLoadingModule } from '../../../widgets/mit-loading/mit-loading.module';
import { OnlyYearMonthSelectModule } from '../../../share/only-year-month-select/only-year-month-select.module';
import { DepartmentSelectModule } from '../../../share/department-select/department-select.module';
const mitModule = [
MitEhartsModule,MitDataTableModule,MitLoadingModule,DepartmentSelectModule,OnlyYearMonthSelectModule
]
@NgModule({
imports: [
CommonModule,FormsModule,NgbDatepickerModule,...mitModule,DailyCarRoutes
],providers: [DailyCarService],declarations: [...page]
}
- html
<div class="form-group condition-wrapper">
<label class="form-control-label">月份</label>
<app-only-year-month-select class="form-control" [placeholder]="'yyyy-mm'" (result)="Time = $event" [range]="{before:5,after:10}"></app-only-year-month-select>
</div>
总结
文章有错误之处亦或者有更好写法和建议的请留言指出，会及时改进和跟进…； 下一篇文章说下指令或者动画相关的。。。。整理下思路
