igniteui-angular
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Ignite UI for Angular is a dependency-free Angular toolkit for building modern web apps
237 lines • 18 kB
JavaScript
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
import { Directive, Input, Output, EventEmitter, ElementRef, NgZone } from '@angular/core';
import { interval, Subject } from 'rxjs';
import { filter, takeUntil } from 'rxjs/operators';
/** @enum {number} */
const DragScrollDirection = {
NONE: 0,
LEFT: 1,
TOP: 2,
RIGHT: 3,
BOTTOM: 4,
TOPLEFT: 5,
TOPRIGHT: 6,
BOTTOMLEFT: 7,
BOTTOMRIGHT: 8,
};
export { DragScrollDirection };
DragScrollDirection[DragScrollDirection.NONE] = 'NONE';
DragScrollDirection[DragScrollDirection.LEFT] = 'LEFT';
DragScrollDirection[DragScrollDirection.TOP] = 'TOP';
DragScrollDirection[DragScrollDirection.RIGHT] = 'RIGHT';
DragScrollDirection[DragScrollDirection.BOTTOM] = 'BOTTOM';
DragScrollDirection[DragScrollDirection.TOPLEFT] = 'TOPLEFT';
DragScrollDirection[DragScrollDirection.TOPRIGHT] = 'TOPRIGHT';
DragScrollDirection[DragScrollDirection.BOTTOMLEFT] = 'BOTTOMLEFT';
DragScrollDirection[DragScrollDirection.BOTTOMRIGHT] = 'BOTTOMRIGHT';
export class IgxGridDragSelectDirective {
/**
* @param {?} ref
* @param {?} zone
*/
constructor(ref, zone) {
this.ref = ref;
this.zone = zone;
this.onDragStop = new EventEmitter();
this.onDragScroll = new EventEmitter();
this.end$ = new Subject();
this.lastDirection = DragScrollDirection.NONE;
this.startDragSelection = (ev) => {
if (!this.activeDrag) {
return;
}
/** @type {?} */
const x = ev.clientX;
/** @type {?} */
const y = ev.clientY;
/** @type {?} */
const direction = this._measureDimensions(x, y);
if (direction === this.lastDirection) {
return;
}
this.unsubscribe();
this._sub = this._interval$.subscribe(() => this.onDragScroll.emit(direction));
this.lastDirection = direction;
};
this.stopDragSelection = () => {
if (!this.activeDrag) {
return;
}
this.onDragStop.emit(false);
this.unsubscribe();
this.lastDirection = DragScrollDirection.NONE;
};
this._interval$ = interval(100).pipe(takeUntil(this.end$), filter(() => this.activeDrag));
}
/**
* @return {?}
*/
get activeDrag() {
return this._activeDrag;
}
/**
* @param {?} val
* @return {?}
*/
set activeDrag(val) {
if (val !== this._activeDrag) {
this.unsubscribe();
this._activeDrag = val;
}
}
/**
* @return {?}
*/
get nativeElement() {
return this.ref.nativeElement;
}
/**
* @return {?}
*/
get clientRect() {
return this.nativeElement.getBoundingClientRect();
}
/**
* @return {?}
*/
ngOnInit() {
this.zone.runOutsideAngular(() => {
this.nativeElement.addEventListener('pointerover', this.startDragSelection);
this.nativeElement.addEventListener('pointerleave', this.stopDragSelection);
});
}
/**
* @return {?}
*/
ngOnDestroy() {
this.zone.runOutsideAngular(() => {
this.nativeElement.removeEventListener('pointerover', this.startDragSelection);
this.nativeElement.removeEventListener('pointerleave', this.stopDragSelection);
});
this.unsubscribe();
this.end$.complete();
}
/**
* @param {?} x
* @param {?} y
* @return {?}
*/
_measureDimensions(x, y) {
/** @type {?} */
let direction;
/** @type {?} */
const rect = this.clientRect;
/** @type {?} */
const RATIO = 0.15;
/** @type {?} */
const offsetX = Math.trunc(x - rect.left);
/** @type {?} */
const offsetY = Math.trunc(y - rect.top);
/** @type {?} */
const left = offsetX <= rect.width * RATIO;
/** @type {?} */
const right = offsetX >= rect.width * (1 - RATIO);
/** @type {?} */
const top = offsetY <= rect.height * RATIO;
/** @type {?} */
const bottom = offsetY >= rect.height * (1 - RATIO);
if (top && left) {
direction = DragScrollDirection.TOPLEFT;
}
else if (top && right) {
direction = DragScrollDirection.TOPRIGHT;
}
else if (bottom && left) {
direction = DragScrollDirection.BOTTOMLEFT;
}
else if (bottom && right) {
direction = DragScrollDirection.BOTTOMRIGHT;
}
else if (top) {
direction = DragScrollDirection.TOP;
}
else if (bottom) {
direction = DragScrollDirection.BOTTOM;
}
else if (left) {
direction = DragScrollDirection.LEFT;
}
else if (right) {
direction = DragScrollDirection.RIGHT;
}
else {
direction = DragScrollDirection.NONE;
}
return direction;
}
/**
* @protected
* @return {?}
*/
unsubscribe() {
if (this._sub) {
this._sub.unsubscribe();
}
}
}
IgxGridDragSelectDirective.decorators = [
{ type: Directive, args: [{
selector: '[igxGridDragSelect]'
},] }
];
/** @nocollapse */
IgxGridDragSelectDirective.ctorParameters = () => [
{ type: ElementRef },
{ type: NgZone }
];
IgxGridDragSelectDirective.propDecorators = {
activeDrag: [{ type: Input, args: ['igxGridDragSelect',] }],
onDragStop: [{ type: Output }],
onDragScroll: [{ type: Output }]
};
if (false) {
/** @type {?} */
IgxGridDragSelectDirective.prototype._activeDrag;
/** @type {?} */
IgxGridDragSelectDirective.prototype.onDragStop;
/** @type {?} */
IgxGridDragSelectDirective.prototype.onDragScroll;
/**
* @type {?}
* @protected
*/
IgxGridDragSelectDirective.prototype.end$;
/**
* @type {?}
* @protected
*/
IgxGridDragSelectDirective.prototype.lastDirection;
/**
* @type {?}
* @protected
*/
IgxGridDragSelectDirective.prototype._interval$;
/**
* @type {?}
* @protected
*/
IgxGridDragSelectDirective.prototype._sub;
/** @type {?} */
IgxGridDragSelectDirective.prototype.startDragSelection;
/** @type {?} */
IgxGridDragSelectDirective.prototype.stopDragSelection;
/**
* @type {?}
* @private
*/
IgxGridDragSelectDirective.prototype.ref;
/**
* @type {?}
* @private
*/
IgxGridDragSelectDirective.prototype.zone;
}
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{ Directive, Input, Output, EventEmitter, ElementRef, OnDestroy, NgZone, OnInit } from '@angular/core';\nimport { interval, Observable, Subscription, Subject } from 'rxjs';\nimport { filter, takeUntil } from 'rxjs/operators';\n\nexport enum DragScrollDirection {\n    NONE,\n    LEFT,\n    TOP,\n    RIGHT,\n    BOTTOM,\n    TOPLEFT,\n    TOPRIGHT,\n    BOTTOMLEFT,\n    BOTTOMRIGHT\n}\n\n\n@Directive({\n    selector: '[igxGridDragSelect]'\n})\nexport class IgxGridDragSelectDirective implements OnInit, OnDestroy {\n    _activeDrag: boolean;\n\n    @Input('igxGridDragSelect')\n    get activeDrag(): boolean {\n        return this._activeDrag;\n    }\n\n    set activeDrag(val: boolean) {\n        if (val !== this._activeDrag) {\n            this.unsubscribe();\n            this._activeDrag = val;\n        }\n    }\n\n    @Output()\n    onDragStop = new EventEmitter<boolean>();\n\n    @Output()\n    onDragScroll = new EventEmitter<DragScrollDirection>();\n\n    get nativeElement(): HTMLElement {\n        return this.ref.nativeElement;\n    }\n\n    get clientRect(): ClientRect {\n        return this.nativeElement.getBoundingClientRect();\n    }\n\n    protected end$ = new Subject<any>();\n    protected lastDirection = DragScrollDirection.NONE;\n    protected _interval$: Observable<any>;\n    protected _sub: Subscription;\n\n    constructor(private ref: ElementRef, private zone: NgZone) {\n        this._interval$ = interval(100).pipe(\n            takeUntil(this.end$),\n            filter(() => this.activeDrag)\n        );\n    }\n\n    ngOnInit() {\n        this.zone.runOutsideAngular(() => {\n            this.nativeElement.addEventListener('pointerover', this.startDragSelection);\n            this.nativeElement.addEventListener('pointerleave', this.stopDragSelection);\n        });\n    }\n\n    ngOnDestroy() {\n        this.zone.runOutsideAngular(() => {\n            this.nativeElement.removeEventListener('pointerover', this.startDragSelection);\n            this.nativeElement.removeEventListener('pointerleave', this.stopDragSelection);\n        });\n        this.unsubscribe();\n        this.end$.complete();\n    }\n\n\n    startDragSelection = (ev: PointerEvent) => {\n        if (!this.activeDrag) {\n            return;\n        }\n        const x = ev.clientX;\n        const y = ev.clientY;\n        const direction = this._measureDimensions(x, y);\n        if (direction === this.lastDirection) {\n            return;\n        }\n        this.unsubscribe();\n        this._sub = this._interval$.subscribe(() => this.onDragScroll.emit(direction));\n        this.lastDirection = direction;\n    }\n\n    stopDragSelection = () => {\n        if (!this.activeDrag) {\n            return;\n        }\n        this.onDragStop.emit(false);\n        this.unsubscribe();\n        this.lastDirection = DragScrollDirection.NONE;\n    }\n\n    _measureDimensions(x: number, y: number): DragScrollDirection {\n        let direction: DragScrollDirection;\n\n        const rect = this.clientRect;\n        const RATIO = 0.15;\n        const offsetX = Math.trunc(x - rect.left);\n        const offsetY = Math.trunc(y - rect.top);\n\n        const left = offsetX <= rect.width * RATIO;\n        const right = offsetX >= rect.width * (1 - RATIO);\n        const top = offsetY <= rect.height * RATIO;\n        const bottom = offsetY >= rect.height * (1 - RATIO);\n\n        if (top && left) {\n            direction = DragScrollDirection.TOPLEFT;\n        } else if (top && right) {\n            direction = DragScrollDirection.TOPRIGHT;\n        } else if (bottom && left) {\n            direction = DragScrollDirection.BOTTOMLEFT;\n        } else if (bottom && right) {\n            direction = DragScrollDirection.BOTTOMRIGHT;\n        } else if (top) {\n            direction = DragScrollDirection.TOP;\n        } else if (bottom) {\n            direction = DragScrollDirection.BOTTOM;\n        } else if (left) {\n            direction = DragScrollDirection.LEFT;\n        } else if (right) {\n            direction = DragScrollDirection.RIGHT;\n        } else {\n            direction = DragScrollDirection.NONE;\n        }\n\n        return direction;\n\n    }\n\n    protected unsubscribe() {\n        if (this._sub) {\n            this._sub.unsubscribe();\n        }\n    }\n}\n"]}