Column spanning in Angular Gantt component

19 Sep 20228 minutes to read

The gantt has option to span the adjacent cells. You need to define the colSpan attribute to span cells in the QueryCellInfo event.

In the following demo, Work1 cells have been spanned.

app.component.ts

import { Component, OnInit, ViewEncapsulation } from '@angular/core';
import { QueryCellInfoEventArgs } from '@syncfusion/ej2-angular-gantt';
import { Gantt } from '@syncfusion/ej2-gantt';
import { GanttData } from './data';
import { EmitType } from '@syncfusion/ej2-base';

@Component({
    selector: 'app-root',
    template:
       `<ejs-gantt id="ganttDefault" height="430px" [dataSource]="data" [taskFields]="taskSettings" [columns]="columns" [splitterSettings]="splitterSettings" [gridLines]='gridLines'
       (queryCellInfo)='queryCellInfoEvent($event)'></ejs-gantt>`,
    encapsulation: ViewEncapsulation.None
})
export class AppComponent{
    // Data for Gantt
    public data: object[];
    public taskSettings: object;
    public splitterSettings: object;
    public columns: object[];
    public gridLines: string;
    public queryCellInfoEvent: EmitType<QueryCellInfoEventArgs> = (args: QueryCellInfoEventArgs) => {
        switch(args.data.TaskID) {
            case 1:
            if ((args.column.field == 'work1') && (args.data.taskData.work1 == 'support')) {
                args.colSpan = 2;
            }
            break;
            case 2:
            if ((args.column.field == 'work1') && (args.data.taskData.work1 == 'support')) {
                args.colSpan = 2;
            }
            break;
            case 3:
            if ((args.column.field == 'work1') && (args.data.taskData.work1 == 'support')) {
                args.colSpan = 2;
            }
            break;
            case 4:
            if ((args.column.field == 'work1') && (args.data.taskData.work1 == 'support')) {
                args.colSpan = 2;
            }
            break;
            case 5  :
            if ((args.column.field == 'work1') && (args.data.taskData.work1 == 'support')) {
                args.colSpan = 2;
            }
            break;
            case 7:
            if ((args.column.field == 'work1') && (args.data.taskData.work1 == 'support')) {
                args.colSpan = 2;
            }
            break;
        }
    }
    public ngOnInit(): void {
        this.data = GanttData;
        this.taskSettings = {
            id: 'TaskID',
            name: 'TaskName',
            startDate: 'StartDate',
            duration: 'Duration',
            progress: 'Progress',
            child: 'subtasks',
            work1: 'work1',
            work2: 'work2',
        };
        this.gridLines = 'Both';
        this.columns =  [
            { field: 'TaskID', headerText: 'Task ID' },
            { field: 'TaskName', headerText: 'Task Name' },
            { field: 'work1', headerText: 'Work 1' },
            { field: 'work2', headerText: 'Work 2' },
            { field: 'StartDate', headerText: 'Start Date' },
            { field: 'Duration', headerText: 'Duration' },
            { field: 'Progress', headerText: 'Progress' }
        ];
        this.splitterSettings = {
            columnIndex: 5
        };
    }
}

app.module.ts

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { GanttModule } from '@syncfusion/ej2-angular-gantt';

/**
 * Module
 */
@NgModule({
    imports: [
        BrowserModule, GanttModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent]
})
export class AppModule { }

main.ts

import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';

enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);