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Row Detail

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Ghislain B edited this page Dec 13, 2023 · 24 revisions

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Demo

Demo Page / Demo Component

Description

A Row Detail allows you to open a detail panel which can contain extra and/or more detailed information about a row. For example, we have a user list but we want to display detailed information about this user (his full address, account info, last purchasers, ...) but we don't want to display this in the user grid (for performance and real estate reasons), so a Row Detail is perfect for this.

Usage

View
<angular-slickgrid 
    gridId="grid2" 
    [columnDefinitions]="columnDefinitions"
    [gridOptions]="gridOptions" 
    [dataset]="dataset"
    (onAngularGridCreated)="angularGridReady($event.detail)">
</angular-slickgrid>
Component
@Component({
  templateUrl: './grid-rowdetail.component.html'
})
export class GridRowDetailComponent implements OnInit, OnDestroy {
  columnDefinitions: Column[];
  gridOptions: GridOption;
  dataviewObj: any;

  angularGridReady(angularGrid: AngularGridInstance) {
    this.angularGrid = angularGrid;
    this.gridObj = angularGrid.slickGrid;
    this.dataViewObj = angularGrid.dataView;
  }

  /* Define grid Options and Columns */
  defineGrid() {
    this.columnDefinitions = [ /*...*/ ];

    this.gridOptions = {
      enableRowDetailView: true,
      rowSelectionOptions: {
        selectActiveRow: true
      },
      rowDetailView: {
        // We can load the "process" asynchronously in 2 different ways (httpClient OR even Promise)
        process: (item) => this.http.get(`api/item/${item.id}`),

        // load only once and reuse the same item detail without calling process method
        loadOnce: true,

        // limit expanded row to only 1 at a time
        singleRowExpand: false,

        // false by default, clicking anywhere on the row will open the detail view
        // when set to false, only the "+" icon would open the row detail
        // if you use editor or cell navigation you would want this flag set to false (default)
        useRowClick: true,

        // how many grid rows do we want to use for the row detail panel (this is only set once and will be used for all row detail)
        // also note that the detail view adds an extra 1 row for padding purposes
        // so if you choose 4 panelRows, the display will in fact use 5 rows
        panelRows: this.detailViewRowCount,

        // you can override the logic for showing (or not) the expand icon
        // for example, display the expand icon only on every 2nd row
        // expandableOverride: (row: number, dataContext: any, grid: any) => (dataContext.id % 2 === 1),

        // Preload View Template
        preloadComponent: RowDetailPreloadComponent,

        // ViewModel Template to load when row detail data is ready
        viewComponent: RowDetailViewComponent,

        // Optionally pass your Parent Component reference to your Child Component (row detail component)
        parent: this
      }
    };
  }
}

Changing Addon Options Dynamically

Row Detail is an addon (commonly known as a plugin and are opt-in addon), because this is not built-in SlickGrid and instead are opt-in, we need to get the instance of that addon object. Once we have the instance, we can use getOptions and setOptions to get/set any of the addon options, for the list of options available you can see them directly in the addon row detail on the 6pac/SlickGrid repo.

Examples

  • Dynamically change the Detail View Row Count (how many grid rows do we want to use for the row detail panel)
changeDetailViewRowCount() {
  if (this.angularGrid && this.angularGrid.extensionService) {
    const rowDetailInstance = this.angularGrid.extensionService.getExtensionInstanceByName(ExtensionName.rowDetailView);
    const options = rowDetailInstance.getOptions();
    options.panelRows = this.detailViewRowCount; // change number of rows dynamically
    rowDetailInstance.setOptions(options);
  }
}

Calling Addon Methods Dynamically

Same as previous paragraph, after we get the SlickGrid addon instance, we can call any of the addon methods, for the complete list of methods available you can refer to the addon Row Detail on the 6pac/SlickGrid repo.

Examples

  • Dynamically close all Row Detail Panels
closeAllRowDetail() {
  if (this.angularGrid && this.angularGrid.extensionService) {
    const rowDetailInstance = this.angularGrid.extensionService.getExtensionInstanceByName(ExtensionName.rowDetailView);
    rowDetailInstance.collapseAll();
  }
}
  • Dynamically close a single Row Detail by it's grid index This requires a bit more work, you can call the method collapseDetailView(item) but it requires to pass the row item object (data context) and it feasible but it's just more work as can be seen below.
closeRowDetail(gridRowIndex: number) {
  if (this.angularGrid && this.angularGrid.extensionService) {
    const rowDetailInstance = this.angularGrid.extensionService.getExtensionInstanceByName(ExtensionName.rowDetailView);
    const item = this.angularGrid.gridService.getDataItemByRowIndex(gridRowIndex);
    rowDetailInstance.collapseDetailView(item);
  }
}

Row Detail - Preload Component (loading spinner)

Most of the time we would get data asynchronously, during that time we can show a loading spinner to the user via the preloadComponent grid option.

View
import { Component } from '@angular/core';

@Component({
  template: `<h4><i class="fa fa-refresh fa-spin fa-2x fa-fw"></i>Loading...</h4>`
})
export class RowDetailPreloadComponent {}
Component
    this.gridOptions = {
      enableRowDetailView: true,
      rowDetailView: {
        //  ... row detail options

        // Preload View Component
        preloadComponent: RowDetailPreloadComponent,
      }
    };

Row Detail - View Component

Same concept as the preload, we pass an Angular Component to the viewComponent that will be used to render our Row Detail.

Grid Component
    this.gridOptions = {
      enableRowDetailView: true,
      rowDetailView: {
        //  ... row detail options

        // View Component to load when row detail data is ready
        // also make sure that it's part of your App Module `entryComponents` array
        viewComponent: RowDetailViewComponent,
      }
    };
Row Detail View (rowdetail-view.component.html)
<div class="container-fluid">
    <h2>{{model?.title}}</h2>
    <div class="row">
      <div class="col-xs-3"><label>Assignee:</label> <input class="form-control" [(ngModel)]="model.assignee" /></div>
      <div class="col-xs-3"><label>Reporter:</label> <span>{{model?.reporter}}</span></div>
      <div class="col-xs-2"><label>Duration:</label> <span>{{model?.duration}}</span></div>
      <div class="col-xs-2"><label>% Complete:</label> <span>{{model?.percentComplete}}</span></div>
    </div>

    <div class="row">
      <div class="col-xs-3"><label>Start:</label> <span>{{model?.start | date: 'yyyy-MM-dd'}}</span></div>
      <div class="col-xs-3"><label>Finish:</label> <span>{{model?.finish | date: 'yyyy-MM-dd'}}</span></div>
      <div class="col-xs-2"><label>Effort Driven:</label> <i [class]="model?.effortDriven ? 'fa fa-check' : ''"></i></div>
    </div>

    <hr>

    <h4>
      Find out who is the Assignee
      <small>
        <button class="btn btn-primary btn-sm" (click)="alertAssignee(model?.assignee)">Click Me</button>
      </small>
    </h4>
  </div>
Row Detail Component rowdetail-view.component.ts)
import { Component } from '@angular/core';

@Component({
  templateUrl: './rowdetail-view.component.html'
})
export class RowDetailViewComponent {
  model: {
    duration: Date;
    percentComplete: number;
    reporter: string;
    start: Date;
    finish: Date;
    effortDriven: boolean;
    assignee: string; title: string;
  };

  constructor() {}

  alertAssignee(name: string) {
    if (typeof name === 'string') {
      alert(`Assignee on this task is: ${name.toUpperCase()}`);
    } else {
      alert('No one is assigned to this task.');
    }
  }
}
App Module

Also make sure that it's part of your App Module entryComponents array since this will be a dynamically created component.

@NgModule({
  declarations: [ /**...*/ ],

  // dynamically created components
  entryComponents: [
    RowDetailViewComponent,
  ],
}

Access Parent Component (grid) from the Child Component (row detail)

The Row Detail provides you access to the following references (SlickGrid, DataView, Parent Component and the Addon (3rd party plugin)), however please note that all of these references are available from the start except the Parent Component instance, for that one you need to reference it inside your Row Detail Grid Options like so:

// Parent Component (grid)
this.gridOptions = {
  enableRowDetailView: true,
  rowDetailView: {
    // ...
    // ViewModel Template to load when row detail data is ready
    viewComponent: RowDetailViewComponent,

    // Optionally pass your Parent Component reference to your Child Component (row detail component)
    parent: this  // <-- THIS REFERENCE
  }

  // a Parent Method that we want to access
  showFlashMessage(message: string, alertType = 'info') {
    this.message = message;
    this.flashAlertType = alertType;
  }
}

Then in our Child Component, we can do some action on the Grid, the DataView or even call a method form the Parent Component (the showFlashMessage in our demo), with that in mind, here is the code of the Child Component

View
<div class="container-fluid">
  <h3>{{model?.title}}</h3>

    <-- delete a row using the DataView & SlickGrid objects -->
    <button class="btn btn-primary btn-danger btn-sm" (click)="deleteRow(model)" data-test="delete-btn">
      Delete Row
    </button>

    <!-- calling a Parent Component method -->
    <button class="btn btn-default btn-sm" (click)="callParentMethod(model)" data-test="parent-btn">
      Call Parent Method
    </button>
</div>
Component
import { Component } from '@angular/core';
import { GridRowDetailComponent } from './grid-rowdetail.component';

@Component({
  templateUrl: './rowdetail-view.component.html'
})
export class RowDetailViewComponent {
  model: {
    duration: Date;
    percentComplete: number;
    reporter: string;
    start: Date;
    finish: Date;
    effortDriven: boolean;
    assignee: string;
    title: string;
  };

  // you also have access to the following objects (it must match the exact property names shown below)
  addon: any; // row detail addon instance
  grid: any;
  dataView: any;

  // you can also optionally use the Parent Component reference
  // NOTE that you MUST provide it through the "parent" property in your "rowDetail" grid options
  parent: GridRowDetailComponent;

  constructor() { }

  alertAssignee(name: string) {
    if (typeof name === 'string') {
      alert(`Assignee on this task is: ${name.toUpperCase()}`);
    } else {
      alert('No one is assigned to this task.');
    }
  }

  deleteRow(model) {
    if (confirm(`Are you sure that you want to delete ${model.title}?`)) {
      // you first need to collapse all rows (via the 3rd party addon instance)
      this.addon.collapseAll();

      // then you can delete the item from the dataView
      this.dataView.deleteItem(model.id);

      // and perhaps display a flash message by calling a method on the Parent Component 
      this.parent.showFlashMessage(`Deleted row with ${model.title}`, 'danger');
    }
  }

  callParentMethod(model) {
    this.parent.showFlashMessage(`We just called Parent Method from the Row Detail Child Component on ${model.title}`);
  }
}

Troubleshooting

Adding a Column dynamically is removing the Row Selection, why is that?

The reason is because the Row Selection (checkbox) plugin is a special column and Angular-Slickgrid is adding an extra column dynamically for the Row Selection checkbox and that is not reflected in your local copy of columnDefinitions. To address this issue, you need to get the Angular-Slickgrid internal copy of all columns (including the extra columns), you can get it via getAllColumnDefinitions() from the Grid Service and then you can use to that array and that will work.

<angular-slickgrid gridId="grid17"
    [columnDefinitions]="columnDefinitions"
    [gridOptions]="gridOptions"
    [dataset]="dataset"
    (onAngularGridCreated)="angularGridReady($event.detail)">
</angular-slickgrid>
angularGridReady(angularGrid: AngularGridInstance) {
  this.angularGrid = angularGrid;
}

addNewColumn() {
  const newColumn = { /*...*/ };

  const allColumns = this.angularGrid.gridService.getAllColumnDefinitions();
  allColumns.push(newColumn);
  this.columnDefinitions = allColumns.slice(); // or use spread operator [...cols]

  // you could also use SlickGrid setColumns() method
  // this.angularGrid.slickGrid.setColumns(cols);
}
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