tree grid grouping pipe and group area (#9625)

* feat(grid): extracted column grouping area into a separate component
* feat(tg-grouping): added tree grid grouping pipe
* feat(tg-group-area): 2 group area components for tree grid and regular grid

Co-authored-by: Galina Edinakova <gedinakova@infragistics.com>
Co-authored-by: Diyan Dimitrov <ddimitrov@infragistics.com>

Author: 3 people

projects/igniteui-angular/src/lib/data-operations/sorting-strategy.ts

@@ -234,7 +234,7 @@ export class IgxSorting implements IGridSortingStrategy {
 
 export class IgxDataRecordSorting extends IgxSorting {
 
-    protected getFieldValue(obj: any, key: string, isDate: boolean = false): any {
-        return isDate ? parseDate(resolveNestedPath(obj.data, key)) : resolveNestedPath(obj.data, key);
+    protected getFieldValue(obj: any, key: string, isDate: boolean = false, isTime: boolean = false): any {
+        return super.getFieldValue(obj.data, key, isDate, isTime);
     }
 }

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

@@ -6,8 +6,9 @@ import { IGridResourceStrings } from '../../core/i18n/grid-resources';
 import { ISortingExpression } from '../../data-operations/sorting-expression.interface';
 import { IGroupingExpression } from '../../data-operations/grouping-expression.interface';
 import { TransactionService, Transaction, State } from '../../services/public_api';
-import { ITreeGridRecord } from '../tree-grid/public_api';
+import { IgxColumnComponent, ITreeGridRecord } from '../tree-grid/public_api';
 import { IGroupByRecord } from '../../data-operations/groupby-record.interface';
+import { IGroupByExpandState } from '../../data-operations/groupby-expand-state.interface';
 
 export interface IGridDataBindable {
     data: any[] | null;
@@ -30,6 +31,8 @@ export interface GridType extends IGridDataBindable {
     id: string;
     renderedRowHeight: number;
     summaryPipeTrigger: number;
+    draggedColumn: IgxColumnComponent;
+    hasColumnLayouts: boolean;
 
     filterMode: FilterMode;
 
@@ -81,9 +84,12 @@ export interface GridType extends IGridDataBindable {
  * An interface describing a Flat Grid type
  */
 export interface FlatGridType extends GridType {
+    groupingExpansionState: IGroupByExpandState[];
     groupingExpressions: IGroupingExpression[];
     groupingExpressionsChange: EventEmitter<IGroupingExpression[]>;
     toggleGroup(groupRow: IGroupByRecord): void;
+    clearGrouping(field: string): void;
+    groupBy(expression: IGroupingExpression | Array<IGroupingExpression>): void;
 }
 
 /**

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

@@ -2644,10 +2644,6 @@ export abstract class IgxGridBaseDirective extends DisplayDensityBase implements
      * @hidden @internal
      */
     public tfootHeight: number;
-    /**
-     * @hidden @internal
-     */
-    public chipsGoupingExpressions = [];
     /**
      * @hidden @internal
      */

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

@@ -31,11 +31,14 @@ import { IgxGridFilteringModule } from './filtering/base/filtering.module';
 import { IgxRowDirective } from './row.directive';
 import {
     IgxExcelStyleHeaderIconDirective,
+    IgxGroupAreaDropDirective,
     IgxHeaderCollapseIndicatorDirective,
     IgxHeaderExpandIndicatorDirective,
     IgxRowCollapsedIndicatorDirective,
     IgxRowExpandedIndicatorDirective
 } from './grid/grid.directives';
+import { IgxChipsModule } from '../chips/chips.module';
+import { IgxGroupByMetaPipe } from './grouping/group-by-area.directive';
 /**
  * @hidden
  */
@@ -56,6 +59,8 @@ import {
         IgxHeaderExpandIndicatorDirective,
         IgxHeaderCollapseIndicatorDirective,
         IgxExcelStyleHeaderIconDirective,
+        IgxGroupAreaDropDirective,
+        IgxGroupByMetaPipe
     ],
     entryComponents: [
         IgxAdvancedFilteringDialogComponent
@@ -89,6 +94,8 @@ import {
         IgxHeaderExpandIndicatorDirective,
         IgxHeaderCollapseIndicatorDirective,
         IgxExcelStyleHeaderIconDirective,
+        IgxGroupAreaDropDirective,
+        IgxGroupByMetaPipe
     ],
     imports: [
         IgxGridColumnModule,
@@ -104,7 +111,8 @@ import {
         IgxGridExcelStyleFilteringModule,
         IgxRowDragModule,
         IgxPaginatorModule,
-        IgxGridSharedModules
+        IgxGridSharedModules,
+        IgxChipsModule
     ],
     providers: [
         { provide: IgxGridTransaction, useClass: IgxBaseTransactionService }

projects/igniteui-angular/src/lib/grids/grid/grid.component.html

@@ -1,29 +1,17 @@
 <ng-content select="igx-grid-toolbar"></ng-content>
 
-<div [style.flex-basis.px]='outerWidth' class="igx-grid__grouparea"
-    *ngIf="showGroupArea && (groupingExpressions.length > 0 || hasGroupableColumns)" #groupArea>
-    <igx-chips-area (reorder)="chipsOrderChanged($event)" (moveEnd)="chipsMovingEnded()">
-        <ng-container *ngFor="let expr of chipsGoupingExpressions; let last = last;">
-            <igx-chip [id]="expr.fieldName" [title]="getGroupByChipTitle(expr)"
-                [removable]="getColumnGroupable(expr.fieldName)"
-                [draggable]="getColumnGroupable(expr.fieldName)" [displayDensity]="displayDensity"
-                (keyDown)="onChipKeyDown($event)" (remove)="onChipRemoved($event)"
-                (chipClick)="getColumnGroupable(expr.fieldName) ? onChipClicked($event): null"
-                [disabled]='!getColumnGroupable(expr.fieldName)'>
-                <span>{{ getGroupByChipTitle(expr) }}</span>
-                <igx-icon igxSuffix>{{ expr.dir == 1 ? 'arrow_upward' : 'arrow_downward' }}</igx-icon>
-            </igx-chip>
-            <span class="igx-grid__grouparea-connector">
-                <igx-icon [style.visibility]="(!last || dropAreaVisible) ? 'visible' : 'hidden'">arrow_forward
-                </igx-icon>
-            </span>
-        </ng-container>
-        <div igxGroupAreaDrop [style.visibility]="dropAreaVisible ? 'visible' : 'hidden'" [class]="groupAreaHostClass"
-            [attr.gridId]='this.id'>
-            <ng-container *ngTemplateOutlet="dropAreaTemplateResolved"></ng-container>
-        </div>
-    </igx-chips-area>
-</div>
+<!-- Group-by area -->
+<ng-container *ngIf="showGroupArea && (groupingExpressions.length > 0 || hasGroupableColumns)">
+    <igx-grid-group-by-area #groupArea [style.flex-basis.px]='outerWidth'
+        [grid]="this"
+        [expressions]="groupingExpressions"
+        [sortingExpressions]="sortingExpressions"
+        [density]="displayDensity"
+        [dropAreaTemplate]="dropAreaTemplate"
+        [dropAreaMessage]="dropAreaMessage"
+    >
+    </igx-grid-group-by-area>
+</ng-container>
 
 <div class="igx-grid__thead" role="rowgroup">
     <div class="igx-grid__thead-wrapper" (keydown.meta.c)="copyHandler($event)" (keydown.control.c)="copyHandler($event)" (copy)="copyHandler($event)"
@@ -282,11 +270,6 @@
     </div>
 </ng-template>
 
-<ng-template #defaultDropArea>
-    <igx-icon class="igx-drop-area__icon">group_work</igx-icon>
-    <span class="igx-drop-area__text">{{dropAreaMessage}}</span>
-</ng-template>
-
 <ng-template #defaultExpandedTemplate>
     <igx-icon role="button" class="igx-grid__group-expand-btn"
    [ngClass]="{

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

@@ -1,6 +1,6 @@
 import {
     Component, ChangeDetectionStrategy, Input, Output, EventEmitter, ContentChild, ViewChildren,
-    QueryList, ViewChild, ElementRef, TemplateRef, DoCheck, AfterContentInit, HostBinding,
+    QueryList, ViewChild, TemplateRef, DoCheck, AfterContentInit, HostBinding,
     forwardRef, OnInit, AfterViewInit, ContentChildren
 } from '@angular/core';
 import { GridBaseAPIService } from '../api.service';
@@ -14,8 +14,6 @@ import { IgxGroupByRowTemplateDirective, IgxGridDetailTemplateDirective } from '
 import { IgxGridGroupByRowComponent } from './groupby-row.component';
 import { IGroupByExpandState } from '../../data-operations/groupby-expand-state.interface';
 import { IForOfState } from '../../directives/for-of/for_of.directive';
-import { IBaseChipEventArgs, IChipClickEventArgs, IChipKeyDownEventArgs } from '../../chips/chip.component';
-import { IChipsAreaReorderEventArgs } from '../../chips/chips-area.component';
 import { IgxColumnComponent } from '../columns/column.component';
 import { takeUntil } from 'rxjs/operators';
 import { IgxFilteringService } from '../filtering/grid-filtering.service';
@@ -25,12 +23,13 @@ import { IgxGridSummaryService } from '../summaries/grid-summary.service';
 import { IgxGridSelectionService } from '../selection/selection.service';
 import { IgxForOfSyncService, IgxForOfScrollSyncService } from '../../directives/for-of/for_of.sync.service';
 import { IgxGridMRLNavigationService } from '../grid-mrl-navigation.service';
-import { FilterMode, RowPinningPosition } from '../common/enums';
+import { FilterMode } from '../common/enums';
 import { GridType } from '../common/grid.interface';
 import { IgxGroupByRowSelectorDirective } from '../selection/row-selectors';
 import { IgxGridCRUDService } from '../common/crud.service';
 import { IgxGridRow, IgxGroupByRow, IgxSummaryRow } from '../grid-public-row';
 import { RowType } from '../common/row.interface';
+import { IgxGridGroupByAreaComponent } from '../grouping/grid-group-by-area.component';
 
 let NEXT_ID = 0;
 
@@ -156,17 +155,11 @@ export class IgxGridComponent extends IgxGridBaseDirective implements GridType,
     @ContentChild(IgxGridDetailTemplateDirective, { read: TemplateRef, static: false })
     public detailTemplate: TemplateRef<any> = null;
 
-    /**
-     * @hidden @internal
-     */
-    @ViewChild('defaultDropArea', { read: TemplateRef, static: true })
-    public defaultDropAreaTemplate: TemplateRef<any>;
-
     /**
      * @hidden @internal
      */
     @ViewChild('groupArea')
-    public groupArea: ElementRef;
+    public groupArea: IgxGridGroupByAreaComponent;
 
     /**
      * @hidden @internal
@@ -371,7 +364,6 @@ export class IgxGridComponent extends IgxGridBaseDirective implements GridType,
         const newExpressions: IGroupingExpression[] = value;
         this._groupingExpressions = cloneArray(value);
         this.groupingExpressionsChange.emit(this._groupingExpressions);
-        this.chipsGoupingExpressions = cloneArray(value);
         if (this._gridAPI.grid) {
             /* grouping should work in conjunction with sorting
             and without overriding separate sorting expressions */
@@ -572,12 +564,6 @@ export class IgxGridComponent extends IgxGridBaseDirective implements GridType,
     public isDetailActive(rowIndex) {
         return this.navigation.activeNode ? this.navigation.activeNode.row === rowIndex : false;
     }
-    /**
-     * @hidden @internal
-     */
-    public get groupAreaHostClass(): string {
-        return this.getComponentDensityClass('igx-drop-area');
-    }
 
     /**
      * Gets/Sets the template reference for the group row.
@@ -812,7 +798,7 @@ export class IgxGridComponent extends IgxGridBaseDirective implements GridType,
      */
     public get dropAreaVisible(): boolean {
         return (this.draggedColumn && this.draggedColumn.groupable) ||
-            !this.chipsGoupingExpressions.length;
+            !this.groupingExpressions.length;
     }
 
     /**
@@ -878,89 +864,6 @@ export class IgxGridComponent extends IgxGridBaseDirective implements GridType,
         }
     }
 
-    /**
-     * @hidden @internal
-     */
-    public onChipRemoved(event: IBaseChipEventArgs) {
-        this.clearGrouping(event.owner.id);
-    }
-
-    /**
-     * @hidden @internal
-     */
-    public chipsOrderChanged(event: IChipsAreaReorderEventArgs) {
-        const newGrouping = [];
-        for (const chip of event.chipsArray) {
-            const expr = this.groupingExpressions.filter((item) => item.fieldName === chip.id)[0];
-
-            if (!this.getColumnByName(expr.fieldName).groupable) {
-                // disallow changing order if there are columns with groupable: false
-                return;
-            }
-            newGrouping.push(expr);
-        }
-        this.groupingExpansionState = [];
-        this.chipsGoupingExpressions = newGrouping;
-
-        if (event.originalEvent instanceof KeyboardEvent) {
-            // When reordered using keyboard navigation, we don't have `onMoveEnd` event.
-            this.groupingExpressions = this.chipsGoupingExpressions;
-        }
-        this.notifyChanges();
-    }
-
-    /**
-     * @hidden @internal
-     */
-    public chipsMovingEnded() {
-        this.groupingExpressions = this.chipsGoupingExpressions;
-        this.notifyChanges();
-    }
-
-    /**
-     * @hidden @internal
-     */
-    public onChipClicked(event: IChipClickEventArgs) {
-        const sortingExpr = this.sortingExpressions;
-        const columnExpr = sortingExpr.find((expr) => expr.fieldName === event.owner.id);
-        const groupExpr = this.groupingExpressions.find((expr) => expr.fieldName === event.owner.id);
-        columnExpr.dir = 3 - columnExpr.dir;
-        groupExpr.dir = columnExpr.dir;
-        this.sort(columnExpr);
-        this.notifyChanges();
-    }
-
-    /**
-     * @hidden @internal
-     */
-    public onChipKeyDown(event: IChipKeyDownEventArgs) {
-        if (event.originalEvent.key === ' ' || event.originalEvent.key === 'Spacebar' || event.originalEvent.key === 'Enter') {
-            const sortingExpr = this.sortingExpressions;
-            const columnExpr = sortingExpr.find((expr) => expr.fieldName === event.owner.id);
-            columnExpr.dir = 3 - columnExpr.dir;
-            this.sort(columnExpr);
-            this.notifyChanges();
-        }
-    }
-
-    /**
-     * @hidden @internal
-     */
-    public get dropAreaTemplateResolved(): TemplateRef<any> {
-        if (this.dropAreaTemplate) {
-            return this.dropAreaTemplate;
-        } else {
-            return this.defaultDropAreaTemplate;
-        }
-    }
-
-    /**
-     * @hidden @internal
-     */
-    public getGroupByChipTitle(expression: IGroupingExpression): string {
-        const column = this.getColumnByName(expression.fieldName);
-        return (column && column.header) || expression.fieldName;
-    }
     /**
      * @hidden @internal
      */
@@ -972,14 +875,6 @@ export class IgxGridComponent extends IgxGridBaseDirective implements GridType,
         }
     }
 
-    /**
-     * @hidden @internal
-     */
-    public getColumnGroupable(fieldName: string): boolean {
-        const column = this.getColumnByName(fieldName);
-        return column && column.groupable;
-    }
-
     /**
      * @hidden @internal
      */

projects/igniteui-angular/src/lib/grids/grid/grid.directives.ts

@@ -2,8 +2,8 @@ import { Directive, ElementRef, Renderer2, NgZone, HostBinding, TemplateRef } fr
 import { IgxDropDirective } from '../../directives/drag-drop/drag-drop.directive';
 import { IgxColumnComponent } from '../columns/column.component';
 import { IgxGridComponent } from './grid.component';
-import { SortingDirection } from '../../data-operations/sorting-expression.interface';
 import { IgxColumnMovingDragDirective } from '../moving/moving.drag.directive';
+import { IgxGroupByAreaDirective } from '../grouping/group-by-area.directive';
 
 /**
  * @hidden
@@ -83,7 +83,11 @@ export class IgxGroupAreaDropDirective extends IgxDropDirective {
     @HostBinding('class.igx-drop-area--hover')
     public hovered = false;
 
-    constructor(private elementRef: ElementRef, private renderer: Renderer2, private zone: NgZone) {
+    constructor(
+        private groupArea: IgxGroupByAreaDirective,
+        private elementRef: ElementRef,
+        renderer: Renderer2,
+        zone: NgZone) {
         super(elementRef, renderer, zone);
     }
 
@@ -93,8 +97,10 @@ export class IgxGroupAreaDropDirective extends IgxDropDirective {
         if (!this.columnBelongsToGrid(column)) {
             return;
         }
-        const grid = column.grid as IgxGridComponent;
-        const isGrouped = grid.groupingExpressions.findIndex((item) => item.fieldName === column.field) !== -1;
+
+        const isGrouped = this.groupArea.expressions
+            ? this.groupArea.expressions.findIndex((item) => item.fieldName === column.field) !== -1
+            : false;
         if (column.groupable && !isGrouped && !column.columnGroup && !!column.field) {
             drag.icon.innerText = 'group_work';
             this.hovered = true;
@@ -114,22 +120,6 @@ export class IgxGroupAreaDropDirective extends IgxDropDirective {
         this.hovered = false;
     }
 
-    public onDragDrop(event) {
-        const drag: IgxColumnMovingDragDirective = event.detail.owner;
-        if (drag instanceof IgxColumnMovingDragDirective) {
-            const column: IgxColumnComponent = drag.column;
-            if (!this.columnBelongsToGrid(column)) {
-                return;
-            }
-            const grid = column.grid as IgxGridComponent;
-            const isGrouped = grid.groupingExpressions.findIndex((item) => item.fieldName === column.field) !== -1;
-            if (column.groupable && !isGrouped && !column.columnGroup && !!column.field) {
-                grid.groupBy({ fieldName: column.field, dir: SortingDirection.Asc, ignoreCase: column.sortingIgnoreCase,
-                    strategy: column.sortStrategy, groupingComparer: column.groupingComparer });
-            }
-        }
-    }
-
     private closestParentByAttr(elem, attr) {
         return elem.hasAttribute(attr) ?
             elem :