@ux-aspects/ux-aspects
Version:
Open source user interface framework for building modern, responsive, mobile big data applications
162 lines • 24.2 kB
JavaScript
import { inject, Injectable } from '@angular/core';
import { NavigationCancel, NavigationEnd, NavigationError, Router } from '@angular/router';
import { BehaviorSubject, Subject } from 'rxjs';
import { filter, map, takeUntil } from 'rxjs/operators';
import * as i0 from "@angular/core";
export class PageHeaderService {
constructor() {
this._router = inject(Router);
this.items$ = new BehaviorSubject([]);
this.selected$ = new BehaviorSubject(null);
this.selectedRoot$ = new BehaviorSubject(null);
this.secondary$ = new BehaviorSubject(false);
this.secondaryNavigationAutoselect = false;
this._onDestroy = new Subject();
this.selected$
.pipe(takeUntil(this._onDestroy), map(selected => this.getRoot(selected)))
.subscribe(root => this.selectedRoot$.next(root));
this._router.events.pipe(filter(event => event instanceof NavigationEnd || event instanceof NavigationCancel || event instanceof NavigationError), takeUntil(this._onDestroy)).subscribe(() => this.updateItemsWithActiveRoute());
}
ngOnDestroy() {
this._onDestroy.next();
this._onDestroy.complete();
}
select(item, navigate = true) {
if (!item) {
return;
}
if (item.routerLink && navigate) {
// Trigger router navigation
const routerLink = Array.isArray(item.routerLink) ? item.routerLink : [item.routerLink];
this._router.navigate(routerLink, item.routerExtras);
}
else if (this.secondaryNavigationAutoselect && item.children && item.children.length > 0) {
// check to see if there is a child that is already marked as selected
const selectedChild = item.children.find(child => child.selected);
if (selectedChild) {
this.select(selectedChild);
this.selected$.next(selectedChild);
return;
}
// Select the first child that isn't disabled in secondaryNavigationAutoselect mode
const firstChild = item.children.find(_item => !_item.disabled);
if (firstChild) {
this.select(firstChild);
}
}
else {
// if we are in secondary navigation mode and we click a parent - dont deselect the child
if (this.secondary$.getValue() === true && this.isParentOf(this.selected$.getValue(), item)) {
return;
}
// Otherwise select the given item
this.selected$.next(item);
}
}
deselect(item) {
// deselect the current item
item.selected = false;
// iterate any children and deselect them
if (item.children) {
item.children.forEach(_item => this.deselect(_item));
}
}
deselectAll() {
this.items$.getValue().forEach(item => this.deselect(item));
}
updateItem(item, selected) {
// Item is selected if it is the selected item, or one of the selected item's ancestors.
item.selected = item === selected || this.isParentOf(selected, item);
if (item === selected) {
// call the select function if present
if (item.select) {
item.select.call(item, item);
}
}
}
setItems(items = []) {
// identify all parent elements
items.forEach(item => this.setParent(item));
this.items$.next(items);
// Set up the initially selected item
// If nothing is set as selected, using the initial route
const initialSelectedItem = items.find(item => item.selected === true);
if (initialSelectedItem) {
this.select(initialSelectedItem);
}
else {
this.updateItemsWithActiveRoute();
}
}
setSecondaryNavigation(enabled) {
this.secondary$.next(enabled);
}
getRoot(item) {
return item && item.parent ? this.getRoot(item.parent) : item;
}
setParent(item, parent) {
// set the parent field
item.parent = parent;
// call this function recursively on all children
if (item.children) {
item.children.forEach(child => this.setParent(child, item));
}
}
isParentOf(node, parent) {
// if there are no parents return false
if (!node || !node.parent) {
return false;
}
// if the parent is the match we are looking for return true
if (node.parent === parent) {
return true;
}
// if there are potentially grandparents then check them too
return this.isParentOf(node.parent, parent);
}
updateItemsWithActiveRoute() {
const activeItem = new PageHeaderActiveNavigationItem();
for (const item of this.items$.getValue()) {
this.findActiveItem(item, activeItem);
if (activeItem.exact) {
break;
}
}
if (activeItem.item) {
this.selected$.next(activeItem.item);
}
}
findActiveItem(item, activeItem) {
if (item.routerLink) {
const routerLink = Array.isArray(item.routerLink) ? item.routerLink : [item.routerLink];
const urlTree = this._router.createUrlTree(routerLink, item.routerExtras);
if (this._router.isActive(urlTree, true) && !activeItem.exact) {
// When the item route is an exact match, no need to look any further
activeItem.item = item;
activeItem.exact = true;
return;
}
if (this._router.isActive(urlTree, false)) {
// Store an inexact match and continue looking
activeItem.item = item;
activeItem.exact = false;
}
}
if (item.children) {
for (const childItem of item.children) {
this.findActiveItem(childItem, activeItem);
if (activeItem.exact) {
return;
}
}
}
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "18.2.12", ngImport: i0, type: PageHeaderService, deps: [], target: i0.ɵɵFactoryTarget.Injectable }); }
static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "18.2.12", ngImport: i0, type: PageHeaderService }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "18.2.12", ngImport: i0, type: PageHeaderService, decorators: [{
type: Injectable
}], ctorParameters: () => [] });
class PageHeaderActiveNavigationItem {
}
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{ inject, Injectable, OnDestroy } from '@angular/core';\nimport { NavigationCancel, NavigationEnd, NavigationError, Router } from '@angular/router';\nimport { BehaviorSubject, Subject } from 'rxjs';\nimport { filter, map, takeUntil } from 'rxjs/operators';\nimport type { PageHeaderNavigationDropdownItem, PageHeaderNavigationItem } from './navigation/navigation.component';\n\n@Injectable()\nexport class PageHeaderService implements OnDestroy {\n    private readonly _router = inject(Router);\n\n    items$ = new BehaviorSubject<PageHeaderNavigationItem[]>([]);\n    selected$ = new BehaviorSubject<PageHeaderNavigationItem>(null);\n    selectedRoot$ = new BehaviorSubject<PageHeaderNavigationItem>(null);\n    secondary$ = new BehaviorSubject<boolean>(false);\n    secondaryNavigationAutoselect = false;\n\n    private readonly _onDestroy = new Subject();\n\n    constructor() {\n\n        this.selected$\n            .pipe(takeUntil(this._onDestroy), map(selected => this.getRoot(selected)))\n            .subscribe(root => this.selectedRoot$.next(root));\n\n        this._router.events.pipe(\n            filter(event => event instanceof NavigationEnd || event instanceof NavigationCancel || event instanceof NavigationError),\n            takeUntil(this._onDestroy)\n        ).subscribe(() => this.updateItemsWithActiveRoute());\n    }\n\n    ngOnDestroy(): void {\n        this._onDestroy.next();\n        this._onDestroy.complete();\n    }\n\n    select(item: PageHeaderNavigationItem, navigate: boolean = true): void {\n\n        if (!item) {\n            return;\n        }\n\n        if (item.routerLink && navigate) {\n\n            // Trigger router navigation\n            const routerLink = Array.isArray(item.routerLink) ? item.routerLink : [item.routerLink];\n            this._router.navigate(routerLink, item.routerExtras);\n\n        } else if (this.secondaryNavigationAutoselect && item.children && item.children.length > 0) {\n\n            // check to see if there is a child that is already marked as selected\n            const selectedChild = item.children.find(child => child.selected);\n\n            if (selectedChild) {\n                this.select(selectedChild);\n                this.selected$.next(selectedChild);\n                return;\n            }\n\n            // Select the first child that isn't disabled in secondaryNavigationAutoselect mode\n            const firstChild = item.children.find(_item => !_item.disabled);\n\n            if (firstChild) {\n                this.select(firstChild);\n            }\n\n        } else {\n\n            // if we are in secondary navigation mode and we click a parent - dont deselect the child\n            if (this.secondary$.getValue() === true && this.isParentOf(this.selected$.getValue(), item)) {\n                return;\n            }\n\n            // Otherwise select the given item\n            this.selected$.next(item);\n        }\n    }\n\n    deselect(item: PageHeaderNavigationItem | PageHeaderNavigationDropdownItem): void {\n        // deselect the current item\n        item.selected = false;\n\n        // iterate any children and deselect them\n        if (item.children) {\n            item.children.forEach(_item => this.deselect(_item));\n        }\n    }\n\n    deselectAll(): void {\n        this.items$.getValue().forEach(item => this.deselect(item));\n    }\n\n    updateItem(item: PageHeaderNavigationItem, selected: PageHeaderNavigationItem): void {\n        // Item is selected if it is the selected item, or one of the selected item's ancestors.\n        item.selected = item === selected || this.isParentOf(selected, item);\n\n        if (item === selected) {\n            // call the select function if present\n            if (item.select) {\n                item.select.call(item, item);\n            }\n        }\n    }\n\n    setItems(items: PageHeaderNavigationItem[] = []): void {\n        // identify all parent elements\n        items.forEach(item => this.setParent(item));\n\n        this.items$.next(items);\n\n        // Set up the initially selected item\n        // If nothing is set as selected, using the initial route\n        const initialSelectedItem = items.find(item => item.selected === true);\n        if (initialSelectedItem) {\n            this.select(initialSelectedItem);\n        } else {\n            this.updateItemsWithActiveRoute();\n        }\n    }\n\n    setSecondaryNavigation(enabled: boolean): void {\n        this.secondary$.next(enabled);\n    }\n\n    private getRoot(item: PageHeaderNavigation): PageHeaderNavigation {\n        return item && item.parent ? this.getRoot(item.parent) : item;\n    }\n\n    private setParent(item: PageHeaderNavigation, parent?: PageHeaderNavigation | null): void {\n\n        // set the parent field\n        item.parent = parent;\n\n        // call this function recursively on all children\n        if (item.children) {\n            item.children.forEach(child => this.setParent(child, item));\n        }\n    }\n\n    private isParentOf(node: PageHeaderNavigation, parent: PageHeaderNavigation): boolean {\n\n        // if there are no parents return false\n        if (!node || !node.parent) {\n            return false;\n        }\n\n        // if the parent is the match we are looking for return true\n        if (node.parent === parent) {\n            return true;\n        }\n\n        // if there are potentially grandparents then check them too\n        return this.isParentOf(node.parent, parent);\n    }\n\n    private updateItemsWithActiveRoute(): void {\n        const activeItem = new PageHeaderActiveNavigationItem();\n        for (const item of this.items$.getValue()) {\n            this.findActiveItem(item, activeItem);\n            if (activeItem.exact) {\n                break;\n            }\n        }\n\n        if (activeItem.item) {\n            this.selected$.next(activeItem.item);\n        }\n    }\n\n    private findActiveItem(item: PageHeaderNavigationItem, activeItem: PageHeaderActiveNavigationItem): void {\n\n        if (item.routerLink) {\n\n            const routerLink = Array.isArray(item.routerLink) ? item.routerLink : [item.routerLink];\n            const urlTree = this._router.createUrlTree(routerLink, item.routerExtras);\n\n            if (this._router.isActive(urlTree, true) && !activeItem.exact) {\n\n                // When the item route is an exact match, no need to look any further\n                activeItem.item = item;\n                activeItem.exact = true;\n\n                return;\n            }\n\n            if (this._router.isActive(urlTree, false)) {\n\n                // Store an inexact match and continue looking\n                activeItem.item = item;\n                activeItem.exact = false;\n            }\n        }\n\n        if (item.children) {\n            for (const childItem of item.children) {\n                this.findActiveItem(childItem, activeItem);\n                if (activeItem.exact) {\n                    return;\n                }\n            }\n        }\n    }\n}\n\nexport type PageHeaderNavigation = PageHeaderNavigationItem | PageHeaderNavigationDropdownItem;\n\nclass PageHeaderActiveNavigationItem {\n    item: PageHeaderNavigationItem;\n    exact: boolean;\n}\n"]}