fundamental-ngx
Version:
SAP Fiori Fundamentals, implemented in Angular
231 lines • 17.7 kB
JavaScript
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
import { Component, ContentChildren, EventEmitter, Input, Output, QueryList, ViewChildren, ViewEncapsulation } from '@angular/core';
import { TabPanelComponent } from './tab/tab-panel.component';
/**
* Represents a list of tab-panels.
*/
export class TabListComponent {
constructor() {
/**
* Index of the selected tab panel.
*/
this.selectedIndex = 0;
/**
* Event emitted when the selected panel changes.
*/
this.selectedIndexChange = new EventEmitter();
}
/**
* @hidden
* @return {?}
*/
ngAfterContentInit() {
setTimeout((/**
* @return {?}
*/
() => {
this.selectTab(this.selectedIndex);
}));
this._tabsSubscription = this.tabs.changes.subscribe((/**
* @return {?}
*/
() => {
if (!this.isIndexInRange() || this.isTabContentEmpty()) {
this.resetTabHook();
}
}));
}
/**
* @hidden
* @return {?}
*/
ngOnDestroy() {
this._tabsSubscription.unsubscribe();
}
/**
* @hidden
* @param {?} changes
* @return {?}
*/
ngOnChanges(changes) {
if (changes.selectedIndex) {
setTimeout((/**
* @return {?}
*/
() => {
this.selectTab(changes.selectedIndex.currentValue);
}));
}
}
/**
* Function to select a new tab from an index.
* @param {?} tabIndex Index of the tab to select.
* @return {?}
*/
selectTab(tabIndex) {
if (this.isIndexInRange() && this.isTargetTabEnabled(tabIndex)) {
this.tabs.forEach((/**
* @param {?} tab
* @param {?} index
* @return {?}
*/
(tab, index) => {
tab.expanded = index === tabIndex;
}));
this.selectedIndex = tabIndex;
this.selectedIndexChange.emit(tabIndex);
}
}
/**
* @hidden
* @param {?} tabIndex
* @return {?}
*/
tabHeaderClickHandler(tabIndex) {
if (this.selectedIndex !== tabIndex) {
this.selectTab(tabIndex);
}
}
/**
* @hidden
* @param {?} index
* @param {?} event
* @return {?}
*/
tabHeaderKeyHandler(index, event) {
switch (event.code) {
case ('ArrowLeft'): {
if (index - 1 >= 0) {
this.getTabLinkFromIndex(index - 1).focus();
}
else {
this.getTabLinkFromIndex(this.tabLinks.length - 1).focus();
}
break;
}
case ('ArrowRight'): {
if (index + 1 < this.tabLinks.length) {
this.getTabLinkFromIndex(index + 1).focus();
}
else {
this.getTabLinkFromIndex(0).focus();
}
break;
}
case ('Space'): {
event.preventDefault();
if (index !== this.selectedIndex) {
this.selectTab(index);
}
break;
}
case ('Enter'): {
if (index !== this.selectedIndex) {
this.selectTab(index);
}
}
}
}
/**
* @private
* @return {?}
*/
isIndexInRange() {
return this.tabs && this.tabs.length > 0 && this.selectedIndex < this.tabs.length;
}
/**
* @private
* @param {?} index
* @return {?}
*/
isTargetTabEnabled(index) {
return !this.tabs.toArray()[index].disabled;
}
/**
* @private
* @return {?}
*/
isTabContentEmpty() {
/** @type {?} */
let result = true;
this.tabs.forEach((/**
* @param {?} tab
* @return {?}
*/
tab => {
if (tab.expanded) {
result = false;
}
}));
return result;
}
/**
* @private
* @return {?}
*/
resetTabHook() {
this.selectedIndex = 0;
setTimeout((/**
* @return {?}
*/
() => {
this.selectTab(this.selectedIndex);
}));
}
/**
* @private
* @param {?} index
* @return {?}
*/
getTabLinkFromIndex(index) {
return (/** @type {?} */ (this.tabLinks.toArray()[index].nativeElement));
}
}
TabListComponent.decorators = [
{ type: Component, args: [{
selector: 'fd-tab-list',
template: "<ul class=\"fd-tabs\"\n role=\"tablist\">\n <li class=\"fd-tabs__item\"\n *ngFor=\"let tab of tabs.toArray(); let i = index;\">\n <a #tabLink\n role=\"tab\"\n class=\"fd-tabs__link\"\n [attr.tabindex]=\"tab.disabled ? -1 : 0\"\n [attr.aria-controls]=\"tab.id\"\n [attr.aria-disabled]=\"tab.disabled\"\n [attr.aria-selected]=\"tab.expanded ? true : null\"\n [attr.aria-label]=\"tab.ariaLabel || null\"\n [attr.aria-labelledby]=\"(!tab.ariaLabel && tab.ariaLabelledBy) ? tab.ariaLabelledBy : null\"\n [class.is-selected]=\"tab.expanded\"\n (keydown)=\"tabHeaderKeyHandler(i, $event)\"\n (click)=\"tabHeaderClickHandler(i)\">\n\n <ng-container *ngIf=\"tab.titleTemplate\">\n <ng-container [fd-tab-load-title]=\"tab.titleTemplate\"></ng-container>\n </ng-container>\n <ng-container *ngIf=\"!tab.titleTemplate\">{{ tab.title }}</ng-container>\n </a>\n </li>\n</ul>\n<ng-content select=\"fd-tab\"></ng-content>\n<ng-content></ng-content>\n",
host: {
class: 'fd-tabs-custom'
},
encapsulation: ViewEncapsulation.None,
styles: [".fd-tabs-custom{display:block}"]
}] }
];
TabListComponent.propDecorators = {
tabs: [{ type: ContentChildren, args: [TabPanelComponent,] }],
tabLinks: [{ type: ViewChildren, args: ['tabLink',] }],
selectedIndex: [{ type: Input }],
selectedIndexChange: [{ type: Output }]
};
if (false) {
/**
* @hidden
* @type {?}
*/
TabListComponent.prototype.tabs;
/**
* @hidden
* @type {?}
*/
TabListComponent.prototype.tabLinks;
/**
* Index of the selected tab panel.
* @type {?}
*/
TabListComponent.prototype.selectedIndex;
/**
* Event emitted when the selected panel changes.
* @type {?}
*/
TabListComponent.prototype.selectedIndexChange;
/**
* @type {?}
* @private
*/
TabListComponent.prototype._tabsSubscription;
}
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{\n    AfterContentInit,\n    Component,\n    ContentChildren,\n    ElementRef,\n    EventEmitter,\n    Input,\n    OnChanges,\n    OnDestroy,\n    Output,\n    QueryList,\n    SimpleChanges,\n    ViewChildren,\n    ViewEncapsulation\n} from '@angular/core';\nimport { TabPanelComponent } from './tab/tab-panel.component';\nimport { Subscription } from 'rxjs';\n\n/**\n * Represents a list of tab-panels.\n */\n@Component({\n    selector: 'fd-tab-list',\n    templateUrl: './tab-list.component.html',\n    styleUrls: ['./tab-list.component.scss'],\n    host: {\n        class: 'fd-tabs-custom'\n    },\n    encapsulation: ViewEncapsulation.None\n})\nexport class TabListComponent implements AfterContentInit, OnChanges, OnDestroy {\n\n    /** @hidden */\n    @ContentChildren(TabPanelComponent)\n    tabs: QueryList<TabPanelComponent>;\n\n    /** @hidden */\n    @ViewChildren('tabLink')\n    tabLinks: QueryList<ElementRef>;\n\n    /** Index of the selected tab panel. */\n    @Input()\n    selectedIndex: number = 0;\n\n    /** Event emitted when the selected panel changes. */\n    @Output()\n    selectedIndexChange = new EventEmitter<number>();\n\n    private _tabsSubscription: Subscription;\n\n    /** @hidden */\n    ngAfterContentInit(): void {\n        setTimeout(() => {\n            this.selectTab(this.selectedIndex);\n        });\n\n        this._tabsSubscription = this.tabs.changes.subscribe(() => {\n            if (!this.isIndexInRange() || this.isTabContentEmpty()) {\n                this.resetTabHook();\n            }\n        });\n    }\n\n    /** @hidden */\n    ngOnDestroy(): void {\n        this._tabsSubscription.unsubscribe();\n    }\n\n    /** @hidden */\n    ngOnChanges(changes: SimpleChanges): void {\n        if (changes.selectedIndex) {\n            setTimeout(() => {\n                this.selectTab(changes.selectedIndex.currentValue);\n            });\n        }\n    }\n\n    /**\n     * Function to select a new tab from an index.\n     * @param tabIndex Index of the tab to select.\n     */\n    selectTab(tabIndex: number): void {\n        if (this.isIndexInRange() && this.isTargetTabEnabled(tabIndex)) {\n            this.tabs.forEach((tab, index) => {\n                tab.expanded = index === tabIndex;\n            });\n            this.selectedIndex = tabIndex;\n            this.selectedIndexChange.emit(tabIndex);\n        }\n    }\n\n    /** @hidden */\n    tabHeaderClickHandler(tabIndex: number): void {\n        if (this.selectedIndex !== tabIndex) {\n            this.selectTab(tabIndex);\n        }\n    }\n\n    /** @hidden */\n    tabHeaderKeyHandler(index: number, event: any): void {\n        switch (event.code) {\n            case ('ArrowLeft'): {\n                if (index - 1 >= 0) {\n                    this.getTabLinkFromIndex(index - 1).focus();\n                } else {\n                    this.getTabLinkFromIndex(this.tabLinks.length - 1).focus();\n                }\n                break;\n            }\n            case ('ArrowRight'): {\n                if (index + 1 < this.tabLinks.length) {\n                    this.getTabLinkFromIndex(index + 1).focus();\n                } else {\n                    this.getTabLinkFromIndex(0).focus();\n                }\n                break;\n            }\n            case ('Space'): {\n                event.preventDefault();\n                if (index !== this.selectedIndex) {\n                    this.selectTab(index);\n                }\n                break;\n            }\n            case ('Enter'): {\n                if (index !== this.selectedIndex) {\n                    this.selectTab(index);\n                }\n            }\n        }\n    }\n\n    private isIndexInRange(): boolean {\n        return this.tabs && this.tabs.length > 0 && this.selectedIndex < this.tabs.length;\n    }\n\n    private isTargetTabEnabled(index: number): boolean {\n        return !this.tabs.toArray()[index].disabled;\n    }\n\n    private isTabContentEmpty(): boolean {\n        let result = true;\n        this.tabs.forEach(tab => {\n            if (tab.expanded) {\n                result = false;\n            }\n        });\n        return result;\n    }\n\n    private resetTabHook(): void {\n        this.selectedIndex = 0;\n        setTimeout(() => {\n            this.selectTab(this.selectedIndex);\n        });\n    }\n\n    private getTabLinkFromIndex(index: number): HTMLElement {\n        return this.tabLinks.toArray()[index].nativeElement as HTMLElement;\n    }\n}\n"]}