feat(grid): row selection templating #4998

Author: jackofdiamond5

CHANGELOG.md

@@ -32,6 +32,20 @@ For more information about the theming please read our [documentation](https://w
     - `uniqueColumnValuesStrategy` input is added. This property provides a callback for loading unique column values on demand. If this property is provided, the unique values it generates will be used by the Excel Style Filtering (instead of using the unique values from the data that is bound to the grid).
     - `igxExcelStyleLoading` directive is added, which can be used to provide a custom loading template for the Excel Style Filtering. If this property is not provided, a default loading template will be used instead.
     - introduced new properties `cellSelection` and `rowSelection` which accept GridSelection mode enumeration. Grid selection mode could be none, single or multiple. Also `hideRowSelectors` property is added, which allows you to show and hide row selectors when row selection is enabled.
+    - introduced functionality for templating row and header selectors - [spec](https://github.com/IgniteUI/igniteui-angular/wiki/Row-Selection-Templating-(Grid-feature))
+    ```html
+    <igx-grid [data]="data", [rowSelection]="'multiple'" primaryKey="ID">
+        <igx-column field="Name"></igx-column>
+        <igx-column field="Age"></igx-column>
+
+        <ng-template igxHeadSelector let-headSelector>
+            <igx-icon>done_all</igx-icon>
+        </ng-template>
+        <ng-template igxRowSelector let-rowContext>
+            <igx-switch [checked]="rowContext.selected"></igx-switch>
+        </ng-template>
+    </igx-grid>
+    ```
 - `IgxHierarchicalGrid`
     - Row Islands now emit child grid events with an additional argument - `owner`, which holds reference to the related child grid component instance.
 - `IgxDrag`

projects/igniteui-angular/src/lib/core/grid-selection.ts

@@ -635,6 +635,12 @@ export class IgxGridSelectionService {
         return this.rowSelection.size > 0 && filteredData && !this.areAllRowSelected();
     }
 
+    public get filteredSelectedRowIds(): any[] {
+        return this.isFilteringApplied() ?
+            this.getRowIDs(this.allData).filter(rowID => this.isRowSelected(rowID)) :
+            this.getSelectedRows().filter(rowID => !this.isRowDeleted(rowID));
+    }
+
     public emitRowSelectionEvent(newSelection, added, removed, event?): boolean {
         const currSelection = this.getSelectedRows();
         if (this.areEqualCollections(currSelection, newSelection)) { return; }

projects/igniteui-angular/src/lib/grids/grid-base.component.ts

@@ -44,7 +44,6 @@ import {
     VerticalAlignment,
     IgxOverlayService
 } from '../services/index';
-import { IgxCheckboxComponent } from './../checkbox/checkbox.component';
 import { GridBaseAPIService } from './api.service';
 import { IgxGridCellComponent } from './cell.component';
 import { IColumnVisibilityChangedEventArgs } from './column-hiding-item.directive';
@@ -89,8 +88,9 @@ import {
 import { IgxGridColumnResizerComponent } from './grid-column-resizer.component';
 import { IgxGridFilteringRowComponent } from './filtering/grid-filtering-row.component';
 import { IgxDragDirective } from '../directives/drag-drop/drag-drop.directive';
-import { DeprecateProperty } from '../core/deprecateDecorators';
 import { CharSeparatedValueData } from '../services/csv/char-separated-value-data';
+import { IgxHeadSelectorDirective, IgxRowSelectorDirective } from './igx-row-selectors.module';
+import { DeprecateProperty } from '../core/deprecateDecorators';
 
 const MINIMUM_COLUMN_WIDTH = 136;
 const FILTER_ROW_HEIGHT = 50;
@@ -259,6 +259,7 @@ export abstract class IgxGridBaseComponent extends DisplayDensityBase implements
     private _locale = null;
     public _destroyed = false;
     private overlayIDs = [];
+
     private _hostWidth;
     /**
      * An accessor that sets the resource strings.
@@ -1707,9 +1708,51 @@ export abstract class IgxGridBaseComponent extends DisplayDensityBase implements
         return this.toolbarCustomContentTemplates.first;
     }
 
+    /**
+     * @hidden
+     * @internal
+     */
     @ContentChildren(IgxGridToolbarCustomContentDirective, { read: IgxGridToolbarCustomContentDirective, descendants: false })
     public toolbarCustomContentTemplates: QueryList<IgxGridToolbarCustomContentDirective>;
 
+    /**
+     * @hidden
+     * @internal
+     */
+    public get headSelectorTemplate(): TemplateRef<IgxHeadSelectorDirective> {
+        if (this.headSelectorsTemplates && this.headSelectorsTemplates.first) {
+            return this.headSelectorsTemplates.first.templateRef;
+        }
+
+        return null;
+    }
+
+    /**
+     * @hidden
+     * @internal
+     */
+    @ContentChildren(IgxHeadSelectorDirective, { read: IgxHeadSelectorDirective, descendants: false })
+    public headSelectorsTemplates: QueryList<IgxHeadSelectorDirective>;
+
+    /**
+     * @hidden
+     * @internal
+     */
+    public get rowSelectorTemplate(): TemplateRef<IgxRowSelectorDirective> {
+        if (this.rowSelectorsTemplates && this.rowSelectorsTemplates.first) {
+            return this.rowSelectorsTemplates.first.templateRef;
+        }
+
+        return null;
+    }
+
+    /**
+     * @hidden
+     * @internal
+     */
+    @ContentChildren(IgxRowSelectorDirective, { read: IgxRowSelectorDirective, descendants: false })
+    public rowSelectorsTemplates: QueryList<IgxRowSelectorDirective>;
+
     /**
      * @hidden
      */
@@ -1743,8 +1786,8 @@ export abstract class IgxGridBaseComponent extends DisplayDensityBase implements
     /**
      * @hidden
      */
-    @ViewChild('headerCheckboxContainer', { static: false })
-    public headerCheckboxContainer: ElementRef;
+    @ViewChild('headerSelectorContainer', { static: false })
+    public headerSelectorContainer: ElementRef;
 
     /**
      * @hidden
@@ -1758,12 +1801,6 @@ export abstract class IgxGridBaseComponent extends DisplayDensityBase implements
     @ViewChild('headerGroupContainer', { static: false })
     public headerGroupContainer: ElementRef;
 
-    /**
-     * @hidden
-     */
-    @ViewChild('headerCheckbox', { read: IgxCheckboxComponent, static: false })
-    public headerCheckbox: IgxCheckboxComponent;
-
     /**
      * @hidden
      */
@@ -1841,6 +1878,7 @@ export abstract class IgxGridBaseComponent extends DisplayDensityBase implements
      */
     @ViewChild('defaultRowEditTemplate', { read: TemplateRef, static: true })
     private defaultRowEditTemplate: TemplateRef<any>;
+
     /**
      * @hidden
      */
@@ -3337,10 +3375,18 @@ export abstract class IgxGridBaseComponent extends DisplayDensityBase implements
         return totalWidth;
     }
 
-    get showRowCheckboxes(): boolean {
+    /**
+     * @hidden
+     * @internal
+     */
+    get showRowSelectors(): boolean {
         return this.isRowSelectable  && this.hasVisibleColumns && !this.hideRowSelectors;
     }
 
+    /**
+     * @hidden
+     * @internal
+     */
     get showDragIcons(): boolean {
         return this.rowDraggable && this.columns.length > this.hiddenColumnsCount;
     }
@@ -4167,7 +4213,7 @@ export abstract class IgxGridBaseComponent extends DisplayDensityBase implements
         const pagingHeight = this.getPagingHeight();
         const groupAreaHeight = this.getGroupAreaHeight();
         const renderedHeight = toolbarHeight + this.theadRow.nativeElement.offsetHeight +
-            footerHeight  + pagingHeight + groupAreaHeight +
+            footerHeight + pagingHeight + groupAreaHeight +
             this.scr.nativeElement.clientHeight;
 
         const computed = this.document.defaultView.getComputedStyle(this.nativeElement).getPropertyValue('height');
@@ -4476,7 +4522,7 @@ export abstract class IgxGridBaseComponent extends DisplayDensityBase implements
         let width = 0;
 
         if (this.isRowSelectable) {
-            width += this.headerCheckboxContainer ? this.headerCheckboxContainer.nativeElement.getBoundingClientRect().width : 0;
+            width += this.headerSelectorContainer ? this.headerSelectorContainer.nativeElement.getBoundingClientRect().width : 0;
         }
         if (this.rowDraggable) {
             width += this.headerDragContainer ? this.headerDragContainer.nativeElement.getBoundingClientRect().width : 0;
@@ -4685,10 +4731,24 @@ export abstract class IgxGridBaseComponent extends DisplayDensityBase implements
     /**
      * @hidden
      */
-    get headerCheckboxAriaLabel() {
-        return this._filteringExpressionsTree.filteringOperands.length > 0 ?
-            this.headerCheckbox && this.selectionService.areAllRowSelected() ? 'Deselect all filtered' : 'Select all filtered' :
-            this.headerCheckbox && this.selectionService.areAllRowSelected() ? 'Deselect all' : 'Select all';
+    get headSelectorBaseAriaLabel() {
+        if (this._filteringExpressionsTree.filteringOperands.length > 0) {
+            return this.selectionService.areAllRowSelected() ? 'Deselect all filtered' : 'Select all filtered';
+        }
+
+        return this.selectionService.areAllRowSelected() ? 'Deselect all' : 'Select all';
+    }
+
+    /**
+     * @hidden
+     * @internal
+     */
+    public get totalRowsCountAfterFilter() {
+        if (this.data) {
+            return this.selectionService.allData.length;
+        }
+
+        return 0;
     }
 
     /**
@@ -4875,7 +4935,7 @@ export abstract class IgxGridBaseComponent extends DisplayDensityBase implements
                     if (col) {
                         const key = headers ? col.header || col.field : col.field;
                         record[key] = formatters && col.formatter ? col.formatter(source[row][col.field])
-                        : source[row][col.field];
+                            : source[row][col.field];
                     }
                 });
             }
@@ -4890,15 +4950,15 @@ export abstract class IgxGridBaseComponent extends DisplayDensityBase implements
     protected getSelectableColumnsAt(index) {
         if (this.hasColumnLayouts) {
             const visibleLayoutColumns = this.visibleColumns
-            .filter(col => col.columnLayout)
-            .sort((a, b) => a.visibleIndex - b.visibleIndex);
+                .filter(col => col.columnLayout)
+                .sort((a, b) => a.visibleIndex - b.visibleIndex);
             const colLayout = visibleLayoutColumns[index];
             return colLayout ? colLayout.children.toArray() : [];
         } else {
             const visibleColumns = this.visibleColumns
-            .filter(col => !col.columnGroup)
-            .sort((a, b) => a.visibleIndex - b.visibleIndex);
-            return [ visibleColumns[index] ];
+                .filter(col => !col.columnGroup)
+                .sort((a, b) => a.visibleIndex - b.visibleIndex);
+            return [visibleColumns[index]];
         }
     }
 
@@ -4913,7 +4973,6 @@ export abstract class IgxGridBaseComponent extends DisplayDensityBase implements
         return this.extractDataFromSelection(source, formatters, headers);
     }
 
-
     /**
      * @hidden
      */
@@ -4944,7 +5003,7 @@ export abstract class IgxGridBaseComponent extends DisplayDensityBase implements
         this.onGridCopy.emit(ev);
 
         if (ev.cancel) {
-             return;
+            return;
         }
 
         const transformer = new CharSeparatedValueData(ev.data, this.clipboardOptions.separator);

projects/igniteui-angular/src/lib/grids/grid-common.module.ts

@@ -67,6 +67,7 @@ import { IgxGridExcelStyleFilteringModule } from './filtering/excel-style/grid.e
 import { IgxGridDragSelectDirective } from './drag-select.directive';
 import { IgxGridColumnResizerComponent } from './grid-column-resizer.component';
 import { IgxRowDragModule } from './row-drag.directive';
+import { IgxRowSelectorsModule } from './igx-row-selectors.module';
 /**
  * @hidden
  */
@@ -164,7 +165,8 @@ import { IgxRowDragModule } from './row-drag.directive';
         IgxFilterCellTemplateDirective,
         IgxRowDragModule,
         IgxPaginatorModule,
-        IgxGridFooterComponent
+        IgxGridFooterComponent,
+        IgxRowSelectorsModule
     ],
     imports: [
         CommonModule,
@@ -193,7 +195,8 @@ import { IgxRowDragModule } from './row-drag.directive';
         IgxGridPipesModule,
         IgxGridExcelStyleFilteringModule,
         IgxRowDragModule,
-        IgxPaginatorModule
+        IgxPaginatorModule,
+        IgxRowSelectorsModule
     ],
     providers: [
         IgxGridSelectionService,

projects/igniteui-angular/src/lib/grids/grid/grid-row-selection.spec.ts

@@ -12,11 +12,12 @@ import {
     SelectionWithScrollsComponent,
     SingleRowSelectionComponent,
     RowSelectionWithoutPrimaryKeyComponent,
-    SelectionWithTransactionsComponent
+    SelectionWithTransactionsComponent,
+    GridCustomSelectorsComponent
 } from '../../test-utils/grid-samples.spec';
-import { IgxHierarchicalGridModule } from '../hierarchical-grid/hierarchical-grid.module';
 import { GridFunctions, GridSelectionFunctions } from '../../test-utils/grid-functions.spec';
 import { SampleTestData } from '../../test-utils/sample-test-data.spec';
+import { IgxRowSelectorsModule } from '../igx-row-selectors.module';
 
 const DEBOUNCETIME = 30;
 
@@ -31,12 +32,13 @@ describe('IgxGrid - Row Selection #grid', () => {
                 SelectionWithScrollsComponent,
                 RowSelectionWithoutPrimaryKeyComponent,
                 SingleRowSelectionComponent,
-                SelectionWithTransactionsComponent
+                SelectionWithTransactionsComponent,
+                GridCustomSelectorsComponent,
             ],
             imports: [
                 NoopAnimationsModule,
                 IgxGridModule,
-                IgxHierarchicalGridModule
+                IgxRowSelectorsModule
             ]
         })
             .compileComponents();
@@ -1871,4 +1873,62 @@ describe('IgxGrid - Row Selection #grid', () => {
             GridSelectionFunctions.verifyRowSelected(addedRow);
         }));
     });
+
+    describe('Custom selectors', () => {
+        let fix;
+        let grid;
+
+        beforeEach(fakeAsync(() => {
+            fix = TestBed.createComponent(GridCustomSelectorsComponent);
+            fix.detectChanges();
+            grid = fix.componentInstance.grid;
+            grid.rowSelection = GridSelectionMode.multiple;
+        }));
+
+        it('Should have the correct properties in the custom row selector template', () => {
+            const firstRow = grid.getRowByIndex(0);
+            const firstCheckbox = firstRow.nativeElement.querySelector('.igx-checkbox__composite');
+            const context = { index: 0, rowID: 'ALFKI', selected: false };
+            const contextUnselect = { index: 0, rowID: 'ALFKI', selected: true };
+            spyOn(fix.componentInstance, 'onRowCheckboxClick').and.callThrough();
+            firstCheckbox.click();
+            fix.detectChanges();
+
+            expect(fix.componentInstance.onRowCheckboxClick).toHaveBeenCalledTimes(1);
+            expect(fix.componentInstance.onRowCheckboxClick).toHaveBeenCalledWith(new MouseEvent('click'), context);
+
+            // Verify correct properties when unselecting a row
+            firstCheckbox.click();
+            fix.detectChanges();
+
+            expect(fix.componentInstance.onRowCheckboxClick).toHaveBeenCalledTimes(2);
+            expect(fix.componentInstance.onRowCheckboxClick).toHaveBeenCalledWith(new MouseEvent('click'), contextUnselect);
+        });
+
+        it('Should have the correct properties in the custom row selector header template', () => {
+            const context = { selectedCount: 0, totalCount: 27 };
+            const contextUnselect = { selectedCount: 27, totalCount: 27 };
+            const headerCheckbox = fix.nativeElement.querySelector('.igx-grid__thead').querySelector('.igx-checkbox__composite');
+            spyOn(fix.componentInstance, 'onHeaderCheckboxClick').and.callThrough();
+            headerCheckbox.click();
+            fix.detectChanges();
+
+            expect(fix.componentInstance.onHeaderCheckboxClick).toHaveBeenCalledTimes(1);
+            expect(fix.componentInstance.onHeaderCheckboxClick).toHaveBeenCalledWith(new MouseEvent('click'), context);
+
+            headerCheckbox.click();
+            fix.detectChanges();
+
+            expect(fix.componentInstance.onHeaderCheckboxClick).toHaveBeenCalledTimes(2);
+            expect(fix.componentInstance.onHeaderCheckboxClick).toHaveBeenCalledWith(new MouseEvent('click'), contextUnselect);
+        });
+
+        it('Should have correct indices on all pages', () => {
+            grid.nextPage();
+            fix.detectChanges();
+
+            const firstRootRow = grid.getRowByIndex(0);
+            expect(firstRootRow.nativeElement.querySelector('.rowNumber').textContent).toEqual('30');
+        });
+    });
 });