Multiple Record Selection API

import { NgModule, Component, Pipe, PipeTransform, enableProdMode } from '@angular/core'; import { BrowserModule } from '@angular/platform-browser'; import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; import { DxDataGridModule, DxButtonModule, DxSelectBoxModule } from 'devextreme-angular'; import { Service, Employee } from './app.service'; if(!/localhost/.test(document.location.host)) { enableProdMode(); } @Component({ selector: 'demo-app', templateUrl: 'app/app.component.html', styleUrls: ['app/app.component.css'], providers: [Service], preserveWhitespaces: true }) export class AppComponent { employees: Employee[]; prefix: string; selectedRows: number[]; selectionChangedBySelectbox: boolean; constructor(service: Service) { this.employees = service.getEmployees(); } filterSelected(event) { this.selectionChangedBySelectbox = true; let prefix = event.value; if(!prefix) return; else if(prefix === "All") this.selectedRows = this.employees.map(employee => employee.ID); else { this.selectedRows = this.employees.filter(employe => employe.Prefix === prefix).map(employee => employee.ID); } this.prefix = prefix; } selectionChangedHandler() { if(!this.selectionChangedBySelectbox) { this.prefix=null; } this.selectionChangedBySelectbox=false; } } @Pipe({ name: 'stringifyEmplyees' }) export class StringifyEmployeesPipe implements PipeTransform { transform(employees: Employee[]) { return employees.map(employee => employee.FirstName + " " + employee.LastName ).join(", "); } } @NgModule({ imports: [ BrowserModule, DxDataGridModule, DxButtonModule, DxSelectBoxModule ], declarations: [AppComponent, StringifyEmployeesPipe], bootstrap: [AppComponent] }) export class AppModule { } platformBrowserDynamic().bootstrapModule(AppModule);

::ng-deep #grid { position: relative; } ::ng-deep #grid-container { margin-top: 10px; } ::ng-deep #select-prefix { width: 150px; display: inline-block; vertical-align: middle; } ::ng-deep .selected-data { margin-top: 20px; padding: 20px; background-color: rgba(191, 191, 191, 0.15); } ::ng-deep .selected-data .caption { font-weight: bold; font-size: 115%; }

import { Injectable } from '@angular/core'; export class Employee { ID: number; FirstName: string; LastName: string; Prefix: string; Position: string; Picture: string; BirthDate: string; HireDate: string; Notes: string; Address: string; } let employees: Employee[] = [{ "ID": 1, "FirstName": "John", "LastName": "Heart", "Prefix": "Mr.", "Position": "CEO", "Picture": "../../../../images/employees/01.png", "BirthDate": "1964/03/16", "HireDate": "1995/01/15", "Notes": "John has been in the Audio/Video industry since 1990. He has led DevAv as its CEO since 2003.\r\n\r\nWhen not working hard as the CEO, John loves to golf and bowl. He once bowled a perfect game of 300.", "Address": "351 S Hill St." }, { "ID": 20, "FirstName": "Olivia", "LastName": "Peyton", "Prefix": "Mrs.", "Position": "Sales Assistant", "Picture": "../../../../images/employees/09.png", "BirthDate": "1981/06/03", "HireDate": "2012/05/14", "Notes": "Olivia loves to sell. She has been selling DevAV products since 2012. \r\n\r\nOlivia was homecoming queen in high school. She is expecting her first child in 6 months. Good Luck Olivia.", "Address": "807 W Paseo Del Mar" }, { "ID": 4, "FirstName": "Robert", "LastName": "Reagan", "Prefix": "Mr.", "Position": "CMO", "Picture": "../../../../images/employees/03.png", "BirthDate": "1974/09/07", "HireDate": "2002/11/08", "Notes": "Robert was recently voted the CMO of the year by CMO Magazine. He is a proud member of the DevAV Management Team.\r\n\r\nRobert is a championship BBQ chef, so when you get the chance ask him for his secret recipe.", "Address": "4 Westmoreland Pl." }, { "ID": 5, "FirstName": "Greta", "LastName": "Sims", "Prefix": "Ms.", "Position": "HR Manager", "Picture": "../../../../images/employees/04.png", "BirthDate": "1977/11/22", "HireDate": "1998/04/23", "Notes": "Greta has been DevAV's HR Manager since 2003. She joined DevAV from Sonee Corp.\r\n\r\nGreta is currently training for the NYC marathon. Her best marathon time is 4 hours. Go Greta.", "Address": "1700 S Grandview Dr." }, { "ID": 6, "FirstName": "Brett", "LastName": "Wade", "Prefix": "Mr.", "Position": "IT Manager", "Picture": "../../../../images/employees/05.png", "BirthDate": "1968/12/01", "HireDate": "2009/03/06", "Notes": "Brett came to DevAv from Microsoft and has led our IT department since 2012.\r\n\r\nWhen he is not working hard for DevAV, he coaches Little League (he was a high school pitcher).", "Address": "1120 Old Mill Rd." }, { "ID": 7, "FirstName": "Sandra", "LastName": "Johnson", "Prefix": "Mrs.", "Position": "Controller", "Picture": "../../../../images/employees/06.png", "BirthDate": "1974/11/15", "HireDate": "2005/05/11", "Notes": "Sandra is a CPA and has been our controller since 2008. She loves to interact with staff so if you've not met her, be certain to say hi.\r\n\r\nSandra has 2 daughters both of whom are accomplished gymnasts.", "Address": "4600 N Virginia Rd." }, { "ID": 10, "FirstName": "Kevin", "LastName": "Carter", "Prefix": "Mr.", "Position": "Shipping Manager", "Picture": "../../../../images/employees/07.png", "BirthDate": "1978/01/09", "HireDate": "2009/08/11", "Notes": "Kevin is our hard-working shipping manager and has been helping that department work like clockwork for 18 months.\r\n\r\nWhen not in the office, he is usually on the basketball court playing pick-up games.", "Address": "424 N Main St." }, { "ID": 11, "FirstName": "Cynthia", "LastName": "Stanwick", "Prefix": "Ms.", "Position": "HR Assistant", "Picture": "../../../../images/employees/08.png", "BirthDate": "1985/06/05", "HireDate": "2008/03/24", "Notes": "Cindy joined us in 2008 and has been in the HR department for 2 years. \r\n\r\nShe was recently awarded employee of the month. Way to go Cindy!", "Address": "2211 Bonita Dr." }, { "ID": 30, "FirstName": "Kent", "LastName": "Samuelson", "Prefix": "Dr.", "Position": "Ombudsman", "Picture": "../../../../images/employees/02.png", "BirthDate": "1972/09/11", "HireDate": "2009/04/22", "Notes": "As our ombudsman, Kent is on the front-lines solving customer problems and helping our partners address issues out in the field. He is a classically trained musician and is a member of the Chamber Orchestra.", "Address": "12100 Mora Dr" }, { "ID": 21, "FirstName": "Taylor", "LastName": "Riley", "Prefix": "Mr.", "Position": "Network Admin", "Picture": "", "BirthDate": "1982/08/14", "HireDate": "2012/04/14", "Notes": "If you are like the rest of us at DevAV, then you've probably reached out for help from Taylor. He does a great job as a member of our IT department.", "Address": "7776 Torreyson Dr" }]; @Injectable() export class Service { getEmployees() { return employees; } }

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