quay/static/js/directives/ui/linear-workflow/linear-workflow.component.ts

import { Component, Output, Input } from 'angular-ts-decorators';
import { LinearWorkflowSectionComponent } from './linear-workflow-section.component';


/**
 * A component that which displays a linear workflow of sections, each completed in order before the next
 * step is made visible.
 */
@Component({
  selector: 'linearWorkflow',
  templateUrl: '/static/js/directives/ui/linear-workflow/linear-workflow.component.html',
  transclude: true
})
export class LinearWorkflowComponent implements ng.IComponentController {

  @Input('@') public doneTitle: string;
  @Output() public onWorkflowComplete: (event: any) => void;
  private sections: SectionInfo[] = [];
  private currentSection: SectionInfo;

  public addSection(component: LinearWorkflowSectionComponent): void {
    this.sections.push({
      index: this.sections.length,
      component: component,
    });

    if (this.sections.length == 1) {
      this.currentSection = this.sections[0];
      this.currentSection.component.sectionVisible = true;
      this.currentSection.component.isCurrentSection = true;
    }
  }

  public onNextSection(): void {
    if (this.currentSection.component.sectionValid && this.currentSection.index + 1 >= this.sections.length) {
      this.onWorkflowComplete({});
    }
    else if (this.currentSection.component.sectionValid && this.currentSection.index + 1 < this.sections.length) {
      this.currentSection.component.isCurrentSection = false;
      this.currentSection = this.sections[this.currentSection.index + 1];
      this.currentSection.component.sectionVisible = true;
      this.currentSection.component.isCurrentSection = true;
    }
  }

  public onSectionInvalid(sectionId: string): void {
    var invalidSection = this.sections.filter(section => section.component.sectionId == sectionId)[0];
    if (invalidSection.index <= this.currentSection.index) {
      invalidSection.component.isCurrentSection = true;
      this.currentSection = invalidSection;
      this.sections.forEach((section) => {
        if (section.index > invalidSection.index) {
          section.component.sectionVisible = false;
          section.component.isCurrentSection = false;
        }
      });
    }
  }
}


/**
 * A type representing a section of the linear workflow.
 */
export type SectionInfo = {
  index: number;
  component: LinearWorkflowSectionComponent;
}