29568001031

Committed 17 Jul 2026 08:53AM UTC coverage: 90.137% (+0.002%) from 90.135%

Build # 29568001031

Build Type

Pull #17328

github

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web-flow

Commit Message

Merge 001d30684 into 8ebabbb38

Pull Request Pull Request #17328: fix(grid): fix zone.onStable patterns broken in zoneless change detection

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/projects/igniteui-angular/splitter/src/splitter/splitter.component.ts

import { AfterContentInit, Component, ContentChildren, ElementRef, EventEmitter, HostBinding, HostListener, Input, Output, QueryList, booleanAttribute, forwardRef, DOCUMENT, inject, ChangeDetectionStrategy } from '@angular/core';
import { DragDirection, IDragMoveEventArgs, IDragStartEventArgs, IgxDragDirective, IgxDragIgnoreDirective } from 'igniteui-angular/directives';
import { IgxSplitterPaneComponent } from './splitter-pane/splitter-pane.component';

/**
 * An enumeration that defines the `SplitterComponent` panes orientation.
 */
export enum SplitterType {
    Horizontal,
    Vertical
}

export declare interface ISplitterBarResizeEventArgs {
    pane: IgxSplitterPaneComponent;
    sibling: IgxSplitterPaneComponent;
}

/**
 * Provides a framework for a simple layout, splitting the view horizontally or vertically
 * into multiple smaller resizable and collapsible areas.
 *
 * @igxModule IgxSplitterModule
 *
 * @igxParent Layouts
 *
 * @igxTheme igx-splitter-theme
 *
 * @igxKeywords splitter panes layout
 *
 * @igxGroup presentation
 *
 * @example
 * ```html
 * <igx-splitter>
 *  <igx-splitter-pane>
 *      ...
 *  </igx-splitter-pane>
 *  <igx-splitter-pane>
 *      ...
 *  </igx-splitter-pane>
 * </igx-splitter>
 * ```
 */
@Component({
    selector: 'igx-splitter',
    templateUrl: './splitter.component.html',
    changeDetection: ChangeDetectionStrategy.Eager,
    imports: [forwardRef(() => IgxSplitBarComponent)]
})
export class IgxSplitterComponent implements AfterContentInit {
    public document = inject(DOCUMENT);
    private elementRef = inject(ElementRef);

    /**
     * Gets the list of splitter panes.
     *
     * @example
     * ```typescript
     * const panes = this.splitter.panes;
     * ```
     */
    @ContentChildren(IgxSplitterPaneComponent, { read: IgxSplitterPaneComponent })
    public panes!: QueryList<IgxSplitterPaneComponent>;

    /**
    * @hidden
    * @internal
    */
    @HostBinding('class.igx-splitter')
    public cssClass = 'igx-splitter';

    /**
     * @hidden @internal
     * Gets/Sets the `overflow` property of the current splitter.
     */
    @HostBinding('style.overflow')
    public overflow = 'hidden';

    /**
     * @hidden @internal
     * Sets/Gets the `display` property of the current splitter.
     */
    @HostBinding('style.display')
    public display = 'flex';

    /**
     * @hidden
     * @internal
     */
    @HostBinding('attr.aria-orientation')
    public get orientation() {
        return this.type === SplitterType.Horizontal ? 'horizontal' : 'vertical';
    }

    /**
     * Event fired when resizing of panes starts.
     *
     * @example
     * ```html
     * <igx-splitter (resizeStart)='resizeStart($event)'>
     *  <igx-splitter-pane>...</igx-splitter-pane>
     * </igx-splitter>
     * ```
     */
    @Output()
    public resizeStart = new EventEmitter<ISplitterBarResizeEventArgs>();

    /**
     * Event fired when resizing of panes is in progress.
     *
     * @example
     * ```html
     * <igx-splitter (resizing)='resizing($event)'>
     *  <igx-splitter-pane>...</igx-splitter-pane>
     * </igx-splitter>
     * ```
     */
    @Output()
    public resizing = new EventEmitter<ISplitterBarResizeEventArgs>();


    /**
     * Event fired when resizing of panes ends.
     *
     * @example
     * ```html
     * <igx-splitter (resizeEnd)='resizeEnd($event)'>
     *  <igx-splitter-pane>...</igx-splitter-pane>
     * </igx-splitter>
     * ```
     */
    @Output()
    public resizeEnd = new EventEmitter<ISplitterBarResizeEventArgs>();

    private _type: SplitterType = SplitterType.Horizontal;

    /**
     * @hidden @internal
     * A field that holds the initial size of the main splitter pane in each pair of panes divided by a splitter bar.
     */
    private initialPaneSize!: number;

    /**
     * @hidden @internal
     * A field that holds the initial size of the sibling pane in each pair of panes divided by a gripper.
     * @memberof SplitterComponent
     */
    private initialSiblingSize!: number;

    /**
     * @hidden @internal
     * The main pane in each pair of panes divided by a gripper.
     */
    private pane!: IgxSplitterPaneComponent;

    /**
     * The sibling pane in each pair of panes divided by a splitter bar.
     */
    private sibling!: IgxSplitterPaneComponent;
    /**
     * Gets/Sets the splitter orientation.
     *
     * @example
     * ```html
     * <igx-splitter [type]="type">...</igx-splitter>
     * ```
     */
    @Input()
    public get type() {
        return this._type;
    }
    public set type(value) {
        this._type = value;
        this.resetPaneSizes();
        this.panes?.notifyOnChanges();
    }

    /**
     * Sets the visibility of the handle and expanders in the splitter bar.
     * False by default
     *
     * @example
     * ```html
     * <igx-splitter [nonCollapsible]='true'>
     * </igx-splitter>
     * ```
     */
    @Input({ transform: booleanAttribute })
    public nonCollapsible = false; // Input to toggle showing/hiding expanders

    /**
     * @hidden @internal
     * Gets the `flex-direction` property of the current `SplitterComponent`.
     */
    @HostBinding('style.flex-direction')
    public get direction(): string {
        return this.type === SplitterType.Horizontal ? 'row' : 'column';
    }

    /** @hidden @internal */
    public ngAfterContentInit(): void {
        this.initPanes();
        this.panes.changes.subscribe(() => {
            this.initPanes();
        });
    }

    /**
     * @hidden @internal
     * This method performs  initialization logic when the user starts dragging the splitter bar between each pair of panes.
     * @param pane - the main pane associated with the currently dragged bar.
     */
    public onMoveStart(pane: IgxSplitterPaneComponent) {
        const panes = this.panes.toArray();
        this.pane = pane;
        this.sibling = panes[panes.indexOf(this.pane) + 1];

        const paneRect = this.pane.element.getBoundingClientRect();
        this.initialPaneSize = this.type === SplitterType.Horizontal ? paneRect.width : paneRect.height;

        const siblingRect = this.sibling.element.getBoundingClientRect();
        this.initialSiblingSize = this.type === SplitterType.Horizontal ? siblingRect.width : siblingRect.height;
        const args: ISplitterBarResizeEventArgs = { pane: this.pane, sibling: this.sibling };
        this.resizeStart.emit(args);
    }

    /**
     * @hidden @internal
     * This method performs calculations concerning the sizes of each pair of panes when the bar between them is dragged.
     * @param delta - The difference along the X (or Y) axis between the initial and the current point when dragging the bar.
     */
    public onMoving(delta: number) {
        const [ paneSize, siblingSize ] = this.calcNewSizes(delta);

        this.pane.dragSize = paneSize + 'px';
        this.sibling.dragSize = siblingSize + 'px';

        const args: ISplitterBarResizeEventArgs = { pane: this.pane, sibling: this.sibling };
        this.resizing.emit(args);
    }

    public onMoveEnd(delta: number) {
        let [ paneSize, siblingSize ] = this.calcNewSizes(delta);

        if (paneSize + siblingSize > this.getTotalSize() && delta < 0) {
            siblingSize = this.getTotalSize() - paneSize;
        } else if (paneSize + siblingSize > this.getTotalSize() && delta > 0) {
            paneSize = this.getTotalSize() - siblingSize;
        }

        if (this.pane.isPercentageSize) {
            // handle % resizes
            const totalSize = this.getTotalSize();
            const percentPaneSize = (paneSize / totalSize) * 100;
            this.pane.size = percentPaneSize + '%';
        } else {
            // px resize
            this.pane.size = paneSize + 'px';
        }

        if (this.sibling.isPercentageSize) {
            // handle % resizes
            const totalSize = this.getTotalSize();
            const percentSiblingPaneSize = (siblingSize / totalSize) * 100;
            this.sibling.size = percentSiblingPaneSize + '%';
        } else {
            // px resize
            this.sibling.size = siblingSize + 'px';
        }
        this.pane.dragSize = null;
        this.sibling.dragSize = null;

        const args: ISplitterBarResizeEventArgs = { pane: this.pane, sibling: this.sibling };
        this.resizeEnd.emit(args);
    }

    /** @hidden @internal */
    public getPaneSiblingsByOrder(order: number, barIndex: number): Array<IgxSplitterPaneComponent> {
        const panes = this.panes.toArray();
        const prevPane = panes[order - barIndex - 1];
        const nextPane = panes[order - barIndex];
        const siblings = [prevPane, nextPane];
        return siblings;
    }

    private getTotalSize() {
        const computed = this.document.defaultView.getComputedStyle(this.elementRef.nativeElement);
        const totalSize = this.type === SplitterType.Horizontal ? computed.getPropertyValue('width') : computed.getPropertyValue('height');
        return parseFloat(totalSize);
    }


    /**
     * @hidden @internal
     * This method inits panes with properties.
     */
    private initPanes() {
        this.panes.forEach(pane => {
            pane.owner = this;
            if (this.type === SplitterType.Horizontal) {
                pane.minWidth = pane.minSize ?? '0';
                pane.maxWidth = pane.maxSize ?? '100%';
            } else {
                pane.minHeight = pane.minSize ?? '0';
                pane.maxHeight = pane.maxSize ?? '100%';
            }
        });
        this.assignFlexOrder();
        if (this.panes.filter(x => x.collapsed).length > 0) {
            // if any panes are collapsed, reset sizes.
            this.resetPaneSizes();
        }
    }

    /**
     * @hidden @internal
     * This method reset pane sizes.
     */
    private resetPaneSizes() {
        if (this.panes) {
            // if type is changed runtime, should reset sizes.
            this.panes.forEach(x => {
                x.size = 'auto'
                x.minWidth = '0';
                x.maxWidth = '100%';
                x.minHeight = '0';
                x.maxHeight = '100%';
            });
        }
    }

    /**
     * @hidden @internal
     * This method assigns the order of each pane.
     */
    private assignFlexOrder() {
        let k = 0;
        this.panes.forEach((pane: IgxSplitterPaneComponent) => {
            pane.order = k;
            k += 2;
        });
    }

    /**
     * @hidden @internal
     * Calculates new sizes for the panes based on move delta and initial sizes
     */
    private calcNewSizes(delta: number): [number, number] {
        const min = parseInt(this.pane.minSize, 10) || 0;
        const minSibling = parseInt(this.sibling.minSize, 10) || 0;
        const max = parseInt(this.pane.maxSize, 10) || this.initialPaneSize + this.initialSiblingSize - minSibling;
        const maxSibling = parseInt(this.sibling.maxSize, 10) || this.initialPaneSize + this.initialSiblingSize - min;

        if (delta < 0) {
            const maxPossibleDelta = Math.min(
                max - this.initialPaneSize,
                this.initialSiblingSize - minSibling,
            )
            delta = Math.min(maxPossibleDelta, Math.abs(delta)) * -1;
        } else {
            const maxPossibleDelta = Math.min(
                this.initialPaneSize - min,
                maxSibling - this.initialSiblingSize
            )
            delta = Math.min(maxPossibleDelta, Math.abs(delta));
        }
        return [this.initialPaneSize - delta, this.initialSiblingSize + delta];
    }
}

/**
 * @hidden @internal
 * Represents the draggable bar that visually separates panes and allows for changing their sizes.
 */
@Component({
    selector: 'igx-splitter-bar',
    templateUrl: './splitter-bar.component.html',
    changeDetection: ChangeDetectionStrategy.Eager,
    imports: [IgxDragDirective, IgxDragIgnoreDirective]
})
export class IgxSplitBarComponent {
    /**
     * Set css class to the host element.
     */
    @HostBinding('class.igx-splitter-bar-host')
    public cssClass = 'igx-splitter-bar-host';

     /**
     * Sets the visibility of the handle and expanders in the splitter bar.
     */
    @Input({ transform: booleanAttribute })
    public nonCollapsible;

    /**
     * Gets/Sets the orientation.
     */
    @Input()
    public type: SplitterType = SplitterType.Horizontal;

    /**
     * Sets/gets the element order.
     */
    @HostBinding('style.order')
    @Input()
    public order!: number;

    /**
     * @hidden
     * @internal
     */
    @HostBinding('attr.tabindex')
    public get tabindex() {
        return this.resizeDisallowed ? null : 0;
    }

    /**
     * @hidden
     * @internal
     */
    @HostBinding('attr.aria-orientation')
    public get orientation() {
        return this.type === SplitterType.Horizontal ? 'horizontal' : 'vertical';
    }

    /**
     * @hidden
     * @internal
     */
    public get cursor() {
        if (this.resizeDisallowed) {
            return '';
        }
        return this.type === SplitterType.Horizontal ? 'col-resize' : 'row-resize';
    }

    /**
     * Sets/gets the `SplitPaneComponent` associated with the current `SplitBarComponent`.
     *
     * @memberof SplitBarComponent
     */
    @Input()
    public pane!: IgxSplitterPaneComponent;

    /**
     * Sets/Gets the `SplitPaneComponent` sibling components associated with the current `SplitBarComponent`.
     */
    @Input()
    public siblings!: Array<IgxSplitterPaneComponent>;

    /**
     * An event that is emitted whenever we start dragging the current `SplitBarComponent`.
     */
    @Output()
    public moveStart = new EventEmitter<IgxSplitterPaneComponent>();

    /**
     * An event that is emitted while we are dragging the current `SplitBarComponent`.
     */
    @Output()
    public moving = new EventEmitter<number>();

    @Output()
    public movingEnd = new EventEmitter<number>();

    /**
     * A temporary holder for the pointer coordinates.
     */
    private startPoint!: number;

    private interactionKeys = new Set('right down left up arrowright arrowdown arrowleft arrowup'.split(' '));

    /**
     * @hidden @internal
     */
    public get prevButtonHidden() {
        return this.siblings[0]?.collapsed && !this.siblings[1]?.collapsed;
    }

    /**
     * @hidden @internal
     */
    @HostListener('keydown', ['$event'])
    public keyEvent(event: KeyboardEvent) {
        const key = event.key.toLowerCase();
        const ctrl = event.ctrlKey;
        event.stopPropagation();
        if (this.interactionKeys.has(key)) {
            event.preventDefault();
        }
        switch (key) {
            case 'arrowup':
            case 'up':
                if (this.type === SplitterType.Vertical) {
                    if (ctrl) {
                        this.onCollapsing(false);
                        break;
                    }
                    if (!this.resizeDisallowed) {
                        event.preventDefault();
                        this.moveStart.emit(this.pane);
                        this.moving.emit(10);
                    }
                }
                break;
            case 'arrowdown':
            case 'down':
                if (this.type === SplitterType.Vertical) {
                    if (ctrl) {
                        this.onCollapsing(true);
                        break;
                    }
                    if (!this.resizeDisallowed) {
                        event.preventDefault();
                        this.moveStart.emit(this.pane);
                        this.moving.emit(-10);
                    }
                }
                break;
            case 'arrowleft':
            case 'left':
                if (this.type === SplitterType.Horizontal) {
                    if (ctrl) {
                        this.onCollapsing(false);
                        break;
                    }
                    if (!this.resizeDisallowed) {
                        event.preventDefault();
                        this.moveStart.emit(this.pane);
                        this.moving.emit(10);
                    }
                }
                break;
            case 'arrowright':
            case 'right':
                if (this.type === SplitterType.Horizontal) {
                    if (ctrl) {
                        this.onCollapsing(true);
                        break;
                    }
                    if (!this.resizeDisallowed) {
                        event.preventDefault();
                        this.moveStart.emit(this.pane);
                        this.moving.emit(-10);
                    }
                }
                break;
            default:
                break;
        }
    }

    /**
     * @hidden @internal
     */
    public get dragDir() {
        return this.type === SplitterType.Horizontal ? DragDirection.VERTICAL : DragDirection.HORIZONTAL;
    }

    /**
     * @hidden @internal
     */
    public get nextButtonHidden() {
        return this.siblings[1]?.collapsed && !this.siblings[0]?.collapsed;
    }

    /**
     * @hidden @internal
     */
    public onDragStart(event: IDragStartEventArgs) {
        if (this.resizeDisallowed) {
            event.cancel = true;
            return;
        }
        this.startPoint = this.type === SplitterType.Horizontal ? event.startX : event.startY;
        this.moveStart.emit(this.pane);
    }

    /**
     * @hidden @internal
     */
    public onDragMove(event: IDragMoveEventArgs) {
        const isHorizontal = this.type === SplitterType.Horizontal;
        const curr = isHorizontal ? event.pageX : event.pageY;
        const delta = this.startPoint - curr;
        if (delta !== 0) {
            this.moving.emit(delta);
            event.cancel = true;
            event.owner.element.nativeElement.style.transform = '';
        }
    }

    public onDragEnd(event: any) {
        const isHorizontal = this.type === SplitterType.Horizontal;
        const curr = isHorizontal ? event.pageX : event.pageY;
        const delta = this.startPoint - curr;
        if (delta !== 0) {
            this.movingEnd.emit(delta);
        }
    }

    protected get resizeDisallowed() {
        const relatedTabs = this.siblings;
        return !!relatedTabs.find(x => x?.resizable === false || x?.collapsed === true);
    }

    /**
     * @hidden @internal
     */
    public onCollapsing(next: boolean) {
        const prevSibling = this.siblings[0];
        const nextSibling = this.siblings[1];
        let target;
        if (next) {
            // if next is clicked when prev pane is hidden, show prev pane, else hide next pane.
            target = prevSibling.collapsed ? prevSibling : nextSibling;
        } else {
            // if prev is clicked when next pane is hidden, show next pane, else hide prev pane.
            target = nextSibling.collapsed ? nextSibling : prevSibling;
        }
        target.toggle();
    }
}

1	import { AfterContentInit, Component, ContentChildren, ElementRef, EventEmitter, HostBinding, HostListener, Input, Output, QueryList, booleanAttribute, forwardRef, DOCUMENT, inject, ChangeDetectionStrategy } from '@angular/core';
2	import { DragDirection, IDragMoveEventArgs, IDragStartEventArgs, IgxDragDirective, IgxDragIgnoreDirective } from 'igniteui-angular/directives';
3	import { IgxSplitterPaneComponent } from './splitter-pane/splitter-pane.component';
4
5	/**
6	* An enumeration that defines the `SplitterComponent` panes orientation.
7	*/
8	export enum SplitterType {	3✔
9	Horizontal,	3✔
10	Vertical	3✔
11	}
12
13	export declare interface ISplitterBarResizeEventArgs {
14	pane: IgxSplitterPaneComponent;
15	sibling: IgxSplitterPaneComponent;
16	}
17
18	/**
19	* Provides a framework for a simple layout, splitting the view horizontally or vertically
20	* into multiple smaller resizable and collapsible areas.
21	*
22	* @igxModule IgxSplitterModule
23	*
24	* @igxParent Layouts
25	*
26	* @igxTheme igx-splitter-theme
27	*
28	* @igxKeywords splitter panes layout
29	*
30	* @igxGroup presentation
31	*
32	* @example
33	* ```html
34	* <igx-splitter>
35	* <igx-splitter-pane>
36	* ...
37	* </igx-splitter-pane>
38	* <igx-splitter-pane>
39	* ...
40	* </igx-splitter-pane>
41	* </igx-splitter>
42	* ```
43	*/
44	@Component({
45	selector: 'igx-splitter',
46	templateUrl: './splitter.component.html',
47	changeDetection: ChangeDetectionStrategy.Eager,
48	imports: [forwardRef(() => IgxSplitBarComponent)]	124✔
49	})
50	export class IgxSplitterComponent implements AfterContentInit {	3✔
51	public document = inject(DOCUMENT);	25✔
52	private elementRef = inject(ElementRef);	25✔
53
54	/**
55	* Gets the list of splitter panes.
56	*
57	* @example
58	* ```typescript
59	* const panes = this.splitter.panes;
60	* ```
61	*/
62	@ContentChildren(IgxSplitterPaneComponent, { read: IgxSplitterPaneComponent })
63	public panes!: QueryList<IgxSplitterPaneComponent>;
64
65	/**
66	* @hidden
67	* @internal
68	*/
69	@HostBinding('class.igx-splitter')
70	public cssClass = 'igx-splitter';	25✔
71
72	/**
73	* @hidden @internal
74	* Gets/Sets the `overflow` property of the current splitter.
75	*/
76	@HostBinding('style.overflow')
77	public overflow = 'hidden';	25✔
78
79	/**
80	* @hidden @internal
81	* Sets/Gets the `display` property of the current splitter.
82	*/
83	@HostBinding('style.display')
84	public display = 'flex';	25✔
85
86	/**
87	* @hidden
88	* @internal
89	*/
90	@HostBinding('attr.aria-orientation')
91	public get orientation() {
92	return this.type === SplitterType.Horizontal ? 'horizontal' : 'vertical';	175✔
93	}
94
95	/**
96	* Event fired when resizing of panes starts.
97	*
98	* @example
99	* ```html
100	* <igx-splitter (resizeStart)='resizeStart($event)'>
101	* <igx-splitter-pane>...</igx-splitter-pane>
102	* </igx-splitter>
103	* ```
104	*/
105	@Output()
106	public resizeStart = new EventEmitter<ISplitterBarResizeEventArgs>();	25✔
107
108	/**
109	* Event fired when resizing of panes is in progress.
110	*
111	* @example
112	* ```html
113	* <igx-splitter (resizing)='resizing($event)'>
114	* <igx-splitter-pane>...</igx-splitter-pane>
115	* </igx-splitter>
116	* ```
117	*/
118	@Output()
119	public resizing = new EventEmitter<ISplitterBarResizeEventArgs>();	25✔
120
121
122	/**
123	* Event fired when resizing of panes ends.
124	*
125	* @example
126	* ```html
127	* <igx-splitter (resizeEnd)='resizeEnd($event)'>
128	* <igx-splitter-pane>...</igx-splitter-pane>
129	* </igx-splitter>
130	* ```
131	*/
132	@Output()
133	public resizeEnd = new EventEmitter<ISplitterBarResizeEventArgs>();	25✔
134
135	private _type: SplitterType = SplitterType.Horizontal;	25✔
136
137	/**
138	* @hidden @internal
139	* A field that holds the initial size of the main splitter pane in each pair of panes divided by a splitter bar.
140	*/
141	private initialPaneSize!: number;
142
143	/**
144	* @hidden @internal
145	* A field that holds the initial size of the sibling pane in each pair of panes divided by a gripper.
146	* @memberof SplitterComponent
147	*/
148	private initialSiblingSize!: number;
149
150	/**
151	* @hidden @internal
152	* The main pane in each pair of panes divided by a gripper.
153	*/
154	private pane!: IgxSplitterPaneComponent;
155
156	/**
157	* The sibling pane in each pair of panes divided by a splitter bar.
158	*/
159	private sibling!: IgxSplitterPaneComponent;
160	/**
161	* Gets/Sets the splitter orientation.
162	*
163	* @example
164	* ```html
165	* <igx-splitter [type]="type">...</igx-splitter>
166	* ```
167	*/
168	@Input()
169	public get type() {
170	return this._type;	708✔
171	}
172	public set type(value) {
173	this._type = value;	30✔
174	this.resetPaneSizes();	30✔
175	this.panes?.notifyOnChanges();	30✔
176	}
177
178	/**
179	* Sets the visibility of the handle and expanders in the splitter bar.
180	* False by default
181	*
182	* @example
183	* ```html
184	* <igx-splitter [nonCollapsible]='true'>
185	* </igx-splitter>
186	* ```
187	*/
188	@Input({ transform: booleanAttribute })
189	public nonCollapsible = false; // Input to toggle showing/hiding expanders	25✔
190
191	/**
192	* @hidden @internal
193	* Gets the `flex-direction` property of the current `SplitterComponent`.
194	*/
195	@HostBinding('style.flex-direction')
196	public get direction(): string {
197	return this.type === SplitterType.Horizontal ? 'row' : 'column';	175✔
198	}
199
200	/** @hidden @internal */
201	public ngAfterContentInit(): void {
202	this.initPanes();	25✔
203	this.panes.changes.subscribe(() => {	25✔
204	this.initPanes();	9✔
205	});
206	}
207
208	/**
209	* @hidden @internal
210	* This method performs initialization logic when the user starts dragging the splitter bar between each pair of panes.
211	* @param pane - the main pane associated with the currently dragged bar.
212	*/
213	public onMoveStart(pane: IgxSplitterPaneComponent) {
214	const panes = this.panes.toArray();	18✔
215	this.pane = pane;	18✔
216	this.sibling = panes[panes.indexOf(this.pane) + 1];	18✔
217
218	const paneRect = this.pane.element.getBoundingClientRect();	18✔
219	this.initialPaneSize = this.type === SplitterType.Horizontal ? paneRect.width : paneRect.height;	18✔
220
221	const siblingRect = this.sibling.element.getBoundingClientRect();	18✔
222	this.initialSiblingSize = this.type === SplitterType.Horizontal ? siblingRect.width : siblingRect.height;	18✔
223	const args: ISplitterBarResizeEventArgs = { pane: this.pane, sibling: this.sibling };	18✔
224	this.resizeStart.emit(args);	18✔
225	}
226
227	/**
228	* @hidden @internal
229	* This method performs calculations concerning the sizes of each pair of panes when the bar between them is dragged.
230	* @param delta - The difference along the X (or Y) axis between the initial and the current point when dragging the bar.
231	*/
232	public onMoving(delta: number) {
233	const [ paneSize, siblingSize ] = this.calcNewSizes(delta);	18✔
234
235	this.pane.dragSize = paneSize + 'px';	18✔
236	this.sibling.dragSize = siblingSize + 'px';	18✔
237
238	const args: ISplitterBarResizeEventArgs = { pane: this.pane, sibling: this.sibling };	18✔
239	this.resizing.emit(args);	18✔
240	}
241
242	public onMoveEnd(delta: number) {
243	let [ paneSize, siblingSize ] = this.calcNewSizes(delta);	6✔
244
245	if (paneSize + siblingSize > this.getTotalSize() && delta < 0) {	6✔
246	siblingSize = this.getTotalSize() - paneSize;	1✔
247	} else if (paneSize + siblingSize > this.getTotalSize() && delta > 0) {	5!
UNCOV 248	paneSize = this.getTotalSize() - siblingSize;	×
249	}
250
251	if (this.pane.isPercentageSize) {	6✔
252	// handle % resizes
253	const totalSize = this.getTotalSize();	5✔
254	const percentPaneSize = (paneSize / totalSize) * 100;	5✔
255	this.pane.size = percentPaneSize + '%';	5✔
256	} else {
257	// px resize
258	this.pane.size = paneSize + 'px';	1✔
259	}
260
261	if (this.sibling.isPercentageSize) {	6✔
262	// handle % resizes
263	const totalSize = this.getTotalSize();	4✔
264	const percentSiblingPaneSize = (siblingSize / totalSize) * 100;	4✔
265	this.sibling.size = percentSiblingPaneSize + '%';	4✔
266	} else {
267	// px resize
268	this.sibling.size = siblingSize + 'px';	2✔
269	}
270	this.pane.dragSize = null;	6✔
271	this.sibling.dragSize = null;	6✔
272
273	const args: ISplitterBarResizeEventArgs = { pane: this.pane, sibling: this.sibling };	6✔
274	this.resizeEnd.emit(args);	6✔
275	}
276
277	/** @hidden @internal */
278	public getPaneSiblingsByOrder(order: number, barIndex: number): Array<IgxSplitterPaneComponent> {
279	const panes = this.panes.toArray();	224✔
280	const prevPane = panes[order - barIndex - 1];	224✔
281	const nextPane = panes[order - barIndex];	224✔
282	const siblings = [prevPane, nextPane];	224✔
283	return siblings;	224✔
284	}
285
286	private getTotalSize() {
287	const computed = this.document.defaultView.getComputedStyle(this.elementRef.nativeElement);	22✔
288	const totalSize = this.type === SplitterType.Horizontal ? computed.getPropertyValue('width') : computed.getPropertyValue('height');	22✔
289	return parseFloat(totalSize);	22✔
290	}
291
292
293	/**
294	* @hidden @internal
295	* This method inits panes with properties.
296	*/
297	private initPanes() {
298	this.panes.forEach(pane => {	34✔
299	pane.owner = this;	76✔
300	if (this.type === SplitterType.Horizontal) {	76✔
301	pane.minWidth = pane.minSize ?? '0';	57✔
302	pane.maxWidth = pane.maxSize ?? '100%';	57✔
303	} else {
304	pane.minHeight = pane.minSize ?? '0';	19✔
305	pane.maxHeight = pane.maxSize ?? '100%';	19✔
306	}
307	});
308	this.assignFlexOrder();	34✔
309	if (this.panes.filter(x => x.collapsed).length > 0) {	76✔
310	// if any panes are collapsed, reset sizes.
311	this.resetPaneSizes();	2✔
312	}
313	}
314
315	/**
316	* @hidden @internal
317	* This method reset pane sizes.
318	*/
319	private resetPaneSizes() {
320	if (this.panes) {	32✔
321	// if type is changed runtime, should reset sizes.
322	this.panes.forEach(x => {	9✔
323	x.size = 'auto'	21✔
324	x.minWidth = '0';	21✔
325	x.maxWidth = '100%';	21✔
326	x.minHeight = '0';	21✔
327	x.maxHeight = '100%';	21✔
328	});
329	}
330	}
331
332	/**
333	* @hidden @internal
334	* This method assigns the order of each pane.
335	*/
336	private assignFlexOrder() {
337	let k = 0;	34✔
338	this.panes.forEach((pane: IgxSplitterPaneComponent) => {	34✔
339	pane.order = k;	76✔
340	k += 2;	76✔
341	});
342	}
343
344	/**
345	* @hidden @internal
346	* Calculates new sizes for the panes based on move delta and initial sizes
347	*/
348	private calcNewSizes(delta: number): [number, number] {
349	const min = parseInt(this.pane.minSize, 10) \|\| 0;	24✔
350	const minSibling = parseInt(this.sibling.minSize, 10) \|\| 0;	24✔
351	const max = parseInt(this.pane.maxSize, 10) \|\| this.initialPaneSize + this.initialSiblingSize - minSibling;	24✔
352	const maxSibling = parseInt(this.sibling.maxSize, 10) \|\| this.initialPaneSize + this.initialSiblingSize - min;	24✔
353
354	if (delta < 0) {	24✔
355	const maxPossibleDelta = Math.min(	16✔
356	max - this.initialPaneSize,
357	this.initialSiblingSize - minSibling,
358	)
359	delta = Math.min(maxPossibleDelta, Math.abs(delta)) * -1;	16✔
360	} else {
361	const maxPossibleDelta = Math.min(	8✔
362	this.initialPaneSize - min,
363	maxSibling - this.initialSiblingSize
364	)
365	delta = Math.min(maxPossibleDelta, Math.abs(delta));	8✔
366	}
367	return [this.initialPaneSize - delta, this.initialSiblingSize + delta];	24✔
368	}
369	}
370
371	/**
372	* @hidden @internal
373	* Represents the draggable bar that visually separates panes and allows for changing their sizes.
374	*/
375	@Component({
376	selector: 'igx-splitter-bar',
377	templateUrl: './splitter-bar.component.html',
378	changeDetection: ChangeDetectionStrategy.Eager,
379	imports: [IgxDragDirective, IgxDragIgnoreDirective]
380	})
381	export class IgxSplitBarComponent {	3✔
382	/**
383	* Set css class to the host element.
384	*/
385	@HostBinding('class.igx-splitter-bar-host')
386	public cssClass = 'igx-splitter-bar-host';	32✔
387
388	/**
389	* Sets the visibility of the handle and expanders in the splitter bar.
390	*/
391	@Input({ transform: booleanAttribute })
392	public nonCollapsible;
393
394	/**
395	* Gets/Sets the orientation.
396	*/
397	@Input()
398	public type: SplitterType = SplitterType.Horizontal;	32✔
399
400	/**
401	* Sets/gets the element order.
402	*/
403	@HostBinding('style.order')
404	@Input()
405	public order!: number;
406
407	/**
408	* @hidden
409	* @internal
410	*/
411	@HostBinding('attr.tabindex')
412	public get tabindex() {
413	return this.resizeDisallowed ? null : 0;	224✔
414	}
415
416	/**
417	* @hidden
418	* @internal
419	*/
420	@HostBinding('attr.aria-orientation')
421	public get orientation() {
422	return this.type === SplitterType.Horizontal ? 'horizontal' : 'vertical';	224✔
423	}
424
425	/**
426	* @hidden
427	* @internal
428	*/
429	public get cursor() {
430	if (this.resizeDisallowed) {	226✔
431	return '';	39✔
432	}
433	return this.type === SplitterType.Horizontal ? 'col-resize' : 'row-resize';	187✔
434	}
435
436	/**
437	* Sets/gets the `SplitPaneComponent` associated with the current `SplitBarComponent`.
438	*
439	* @memberof SplitBarComponent
440	*/
441	@Input()
442	public pane!: IgxSplitterPaneComponent;
443
444	/**
445	* Sets/Gets the `SplitPaneComponent` sibling components associated with the current `SplitBarComponent`.
446	*/
447	@Input()
448	public siblings!: Array<IgxSplitterPaneComponent>;
449
450	/**
451	* An event that is emitted whenever we start dragging the current `SplitBarComponent`.
452	*/
453	@Output()
454	public moveStart = new EventEmitter<IgxSplitterPaneComponent>();	32✔
455
456	/**
457	* An event that is emitted while we are dragging the current `SplitBarComponent`.
458	*/
459	@Output()
460	public moving = new EventEmitter<number>();	32✔
461
462	@Output()
463	public movingEnd = new EventEmitter<number>();	32✔
464
465	/**
466	* A temporary holder for the pointer coordinates.
467	*/
468	private startPoint!: number;
469
470	private interactionKeys = new Set('right down left up arrowright arrowdown arrowleft arrowup'.split(' '));	32✔
471
472	/**
473	* @hidden @internal
474	*/
475	public get prevButtonHidden() {
476	return this.siblings[0]?.collapsed && !this.siblings[1]?.collapsed;	224✔
477	}
478
479	/**
480	* @hidden @internal
481	*/
482	@HostListener('keydown', ['$event'])
483	public keyEvent(event: KeyboardEvent) {
484	const key = event.key.toLowerCase();	17✔
485	const ctrl = event.ctrlKey;	17✔
486	event.stopPropagation();	17✔
487	if (this.interactionKeys.has(key)) {	17✔
488	event.preventDefault();	17✔
489	}
490	switch (key) {	17!
491	case 'arrowup':
492	case 'up':
493	if (this.type === SplitterType.Vertical) {	3✔
494	if (ctrl) {	3✔
495	this.onCollapsing(false);	2✔
496	break;	2✔
497	}
498	if (!this.resizeDisallowed) {	1✔
499	event.preventDefault();	1✔
500	this.moveStart.emit(this.pane);	1✔
501	this.moving.emit(10);	1✔
502	}
503	}
504	break;	1✔
505	case 'arrowdown':
506	case 'down':
507	if (this.type === SplitterType.Vertical) {	5✔
508	if (ctrl) {	5✔
509	this.onCollapsing(true);	2✔
510	break;	2✔
511	}
512	if (!this.resizeDisallowed) {	3✔
513	event.preventDefault();	2✔
514	this.moveStart.emit(this.pane);	2✔
515	this.moving.emit(-10);	2✔
516	}
517	}
518	break;	3✔
519	case 'arrowleft':
520	case 'left':
521	if (this.type === SplitterType.Horizontal) {	3✔
522	if (ctrl) {	3✔
523	this.onCollapsing(false);	2✔
524	break;	2✔
525	}
526	if (!this.resizeDisallowed) {	1✔
527	event.preventDefault();	1✔
528	this.moveStart.emit(this.pane);	1✔
529	this.moving.emit(10);	1✔
530	}
531	}
532	break;	1✔
533	case 'arrowright':
534	case 'right':
535	if (this.type === SplitterType.Horizontal) {	6✔
536	if (ctrl) {	6✔
537	this.onCollapsing(true);	2✔
538	break;	2✔
539	}
540	if (!this.resizeDisallowed) {	4✔
541	event.preventDefault();	2✔
542	this.moveStart.emit(this.pane);	2✔
543	this.moving.emit(-10);	2✔
544	}
545	}
546	break;	4✔
547	default:
UNCOV 548	break;	×
549	}
550	}
551
552	/**
553	* @hidden @internal
554	*/
555	public get dragDir() {
556	return this.type === SplitterType.Horizontal ? DragDirection.VERTICAL : DragDirection.HORIZONTAL;	224✔
557	}
558
559	/**
560	* @hidden @internal
561	*/
562	public get nextButtonHidden() {
563	return this.siblings[1]?.collapsed && !this.siblings[0]?.collapsed;	224✔
564	}
565
566	/**
567	* @hidden @internal
568	*/
569	public onDragStart(event: IDragStartEventArgs) {
570	if (this.resizeDisallowed) {	1✔
571	event.cancel = true;	1✔
572	return;	1✔
573	}
UNCOV 574	this.startPoint = this.type === SplitterType.Horizontal ? event.startX : event.startY;	×
UNCOV 575	this.moveStart.emit(this.pane);	×
576	}
577
578	/**
579	* @hidden @internal
580	*/
581	public onDragMove(event: IDragMoveEventArgs) {
UNCOV 582	const isHorizontal = this.type === SplitterType.Horizontal;	×
UNCOV 583	const curr = isHorizontal ? event.pageX : event.pageY;	×
UNCOV 584	const delta = this.startPoint - curr;	×
UNCOV 585	if (delta !== 0) {	×
586	this.moving.emit(delta);	×
587	event.cancel = true;	×
588	event.owner.element.nativeElement.style.transform = '';	×
589	}
590	}
591
592	public onDragEnd(event: any) {
UNCOV 593	const isHorizontal = this.type === SplitterType.Horizontal;	×
UNCOV 594	const curr = isHorizontal ? event.pageX : event.pageY;	×
UNCOV 595	const delta = this.startPoint - curr;	×
UNCOV 596	if (delta !== 0) {	×
597	this.movingEnd.emit(delta);	×
598	}
599	}
600
601	protected get resizeDisallowed() {
602	const relatedTabs = this.siblings;	460✔
603	return !!relatedTabs.find(x => x?.resizable === false \|\| x?.collapsed === true);	872✔
604	}
605
606	/**
607	* @hidden @internal
608	*/
609	public onCollapsing(next: boolean) {
610	const prevSibling = this.siblings[0];	15✔
611	const nextSibling = this.siblings[1];	15✔
612	let target;
613	if (next) {	15✔
614	// if next is clicked when prev pane is hidden, show prev pane, else hide next pane.
615	target = prevSibling.collapsed ? prevSibling : nextSibling;	7✔
616	} else {
617	// if prev is clicked when next pane is hidden, show next pane, else hide prev pane.
618	target = nextSibling.collapsed ? nextSibling : prevSibling;	8✔
619	}
620	target.toggle();	15✔
621	}
622	}

IgniteUI / igniteui-angular / 29568001031

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