@ionic/angular
Version:
Angular specific wrappers for @ionic/core
180 lines • 22 kB
JavaScript
import { Component, ContentChild, ContentChildren, ElementRef, EventEmitter, HostListener, Output, ViewChild, } from '@angular/core';
import { IonTabBar } from '../proxies';
import { IonRouterOutlet } from './ion-router-outlet';
import * as i0 from "@angular/core";
import * as i1 from "../../providers/nav-controller";
import * as i2 from "./ion-router-outlet";
// eslint-disable-next-line @angular-eslint/component-class-suffix
export class IonTabs {
constructor(navCtrl) {
this.navCtrl = navCtrl;
this.ionTabsWillChange = new EventEmitter();
this.ionTabsDidChange = new EventEmitter();
this.tabBarSlot = 'bottom';
}
ngAfterContentInit() {
this.detectSlotChanges();
}
ngAfterContentChecked() {
this.detectSlotChanges();
}
/**
* @internal
*/
onPageSelected(detail) {
const stackId = detail.enteringView.stackId;
if (detail.tabSwitch && stackId !== undefined) {
this.ionTabsWillChange.emit({ tab: stackId });
if (this.tabBar) {
this.tabBar.selectedTab = stackId;
}
this.ionTabsDidChange.emit({ tab: stackId });
}
}
/**
* When a tab button is clicked, there are several scenarios:
* 1. If the selected tab is currently active (the tab button has been clicked
* again), then it should go to the root view for that tab.
*
* a. Get the saved root view from the router outlet. If the saved root view
* matches the tabRootUrl, set the route view to this view including the
* navigation extras.
* b. If the saved root view from the router outlet does
* not match, navigate to the tabRootUrl. No navigation extras are
* included.
*
* 2. If the current tab tab is not currently selected, get the last route
* view from the router outlet.
*
* a. If the last route view exists, navigate to that view including any
* navigation extras
* b. If the last route view doesn't exist, then navigate
* to the default tabRootUrl
*/
select(tabOrEvent) {
const isTabString = typeof tabOrEvent === 'string';
const tab = isTabString ? tabOrEvent : tabOrEvent.detail.tab;
const alreadySelected = this.outlet.getActiveStackId() === tab;
const tabRootUrl = `${this.outlet.tabsPrefix}/${tab}`;
/**
* If this is a nested tab, prevent the event
* from bubbling otherwise the outer tabs
* will respond to this event too, causing
* the app to get directed to the wrong place.
*/
if (!isTabString) {
tabOrEvent.stopPropagation();
}
if (alreadySelected) {
const activeStackId = this.outlet.getActiveStackId();
const activeView = this.outlet.getLastRouteView(activeStackId);
// If on root tab, do not navigate to root tab again
if (activeView?.url === tabRootUrl) {
return;
}
const rootView = this.outlet.getRootView(tab);
const navigationExtras = rootView && tabRootUrl === rootView.url && rootView.savedExtras;
return this.navCtrl.navigateRoot(tabRootUrl, {
...navigationExtras,
animated: true,
animationDirection: 'back',
});
}
else {
const lastRoute = this.outlet.getLastRouteView(tab);
/**
* If there is a lastRoute, goto that, otherwise goto the fallback url of the
* selected tab
*/
const url = lastRoute?.url || tabRootUrl;
const navigationExtras = lastRoute?.savedExtras;
return this.navCtrl.navigateRoot(url, {
...navigationExtras,
animated: true,
animationDirection: 'back',
});
}
}
getSelected() {
return this.outlet.getActiveStackId();
}
/**
* Detects changes to the slot attribute of the tab bar.
*
* If the slot attribute has changed, then the tab bar
* should be relocated to the new slot position.
*/
detectSlotChanges() {
this.tabBars.forEach((tabBar) => {
// el is a protected attribute from the generated component wrapper
const currentSlot = tabBar.el.getAttribute('slot');
if (currentSlot !== this.tabBarSlot) {
this.tabBarSlot = currentSlot;
this.relocateTabBar();
}
});
}
/**
* Relocates the tab bar to the new slot position.
*/
relocateTabBar() {
/**
* `el` is a protected attribute from the generated component wrapper.
* To avoid having to manually create the wrapper for tab bar, we
* cast the tab bar to any and access the protected attribute.
*/
const tabBar = this.tabBar.el;
if (this.tabBarSlot === 'top') {
/**
* A tab bar with a slot of "top" should be inserted
* at the top of the container.
*/
this.tabsInner.nativeElement.before(tabBar);
}
else {
/**
* A tab bar with a slot of "bottom" or without a slot
* should be inserted at the end of the container.
*/
this.tabsInner.nativeElement.after(tabBar);
}
}
}
/** @nocollapse */ IonTabs.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "14.2.12", ngImport: i0, type: IonTabs, deps: [{ token: i1.NavController }], target: i0.ɵɵFactoryTarget.Component });
/** @nocollapse */ IonTabs.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "14.2.12", type: IonTabs, selector: "ion-tabs", outputs: { ionTabsWillChange: "ionTabsWillChange", ionTabsDidChange: "ionTabsDidChange" }, host: { listeners: { "ionTabButtonClick": "select($event)" } }, queries: [{ propertyName: "tabBar", first: true, predicate: IonTabBar, descendants: true }, { propertyName: "tabBars", predicate: IonTabBar }], viewQueries: [{ propertyName: "outlet", first: true, predicate: ["outlet"], descendants: true, read: IonRouterOutlet }, { propertyName: "tabsInner", first: true, predicate: ["tabsInner"], descendants: true, read: ElementRef, static: true }], ngImport: i0, template: `
<ng-content select="[slot=top]"></ng-content>
<div class="tabs-inner" #tabsInner>
<ion-router-outlet #outlet tabs="true" (stackEvents)="onPageSelected($event)"></ion-router-outlet>
</div>
<ng-content></ng-content>
`, isInline: true, styles: [":host{display:flex;position:absolute;inset:0;flex-direction:column;width:100%;height:100%;contain:layout size style}.tabs-inner{position:relative;flex:1;contain:layout size style}\n"], dependencies: [{ kind: "directive", type: i2.IonRouterOutlet, selector: "ion-router-outlet", inputs: ["animated", "animation", "mode", "swipeGesture"], outputs: ["stackEvents", "activate", "deactivate"], exportAs: ["outlet"] }] });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "14.2.12", ngImport: i0, type: IonTabs, decorators: [{
type: Component,
args: [{ selector: 'ion-tabs', template: `
<ng-content select="[slot=top]"></ng-content>
<div class="tabs-inner" #tabsInner>
<ion-router-outlet #outlet tabs="true" (stackEvents)="onPageSelected($event)"></ion-router-outlet>
</div>
<ng-content></ng-content>
`, styles: [":host{display:flex;position:absolute;inset:0;flex-direction:column;width:100%;height:100%;contain:layout size style}.tabs-inner{position:relative;flex:1;contain:layout size style}\n"] }]
}], ctorParameters: function () { return [{ type: i1.NavController }]; }, propDecorators: { outlet: [{
type: ViewChild,
args: ['outlet', { read: IonRouterOutlet, static: false }]
}], tabsInner: [{
type: ViewChild,
args: ['tabsInner', { read: ElementRef, static: true }]
}], tabBar: [{
type: ContentChild,
args: [IonTabBar, { static: false }]
}], tabBars: [{
type: ContentChildren,
args: [IonTabBar]
}], ionTabsWillChange: [{
type: Output
}], ionTabsDidChange: [{
type: Output
}], select: [{
type: HostListener,
args: ['ionTabButtonClick', ['$event']]
}] } });
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{\n  AfterContentChecked,\n  AfterContentInit,\n  Component,\n  ContentChild,\n  ContentChildren,\n  ElementRef,\n  EventEmitter,\n  HostListener,\n  Output,\n  QueryList,\n  ViewChild,\n} from '@angular/core';\n\nimport { NavController } from '../../providers/nav-controller';\nimport { IonTabBar } from '../proxies';\n\nimport { IonRouterOutlet } from './ion-router-outlet';\nimport { StackEvent } from './stack-utils';\n\n@Component({\n  selector: 'ion-tabs',\n  template: `\n    <ng-content select=\"[slot=top]\"></ng-content>\n    <div class=\"tabs-inner\" #tabsInner>\n      <ion-router-outlet #outlet tabs=\"true\" (stackEvents)=\"onPageSelected($event)\"></ion-router-outlet>\n    </div>\n    <ng-content></ng-content>\n  `,\n  styles: [\n    `\n      :host {\n        display: flex;\n        position: absolute;\n        top: 0;\n        left: 0;\n        right: 0;\n        bottom: 0;\n\n        flex-direction: column;\n\n        width: 100%;\n        height: 100%;\n\n        contain: layout size style;\n      }\n      .tabs-inner {\n        position: relative;\n\n        flex: 1;\n\n        contain: layout size style;\n      }\n    `,\n  ],\n})\n// eslint-disable-next-line @angular-eslint/component-class-suffix\nexport class IonTabs implements AfterContentInit, AfterContentChecked {\n  @ViewChild('outlet', { read: IonRouterOutlet, static: false }) outlet: IonRouterOutlet;\n  @ViewChild('tabsInner', { read: ElementRef, static: true }) tabsInner: ElementRef<HTMLDivElement>;\n\n  @ContentChild(IonTabBar, { static: false }) tabBar: IonTabBar | undefined;\n  @ContentChildren(IonTabBar) tabBars: QueryList<IonTabBar>;\n\n  @Output() ionTabsWillChange = new EventEmitter<{ tab: string }>();\n  @Output() ionTabsDidChange = new EventEmitter<{ tab: string }>();\n\n  private tabBarSlot = 'bottom';\n\n  constructor(private navCtrl: NavController) {}\n\n  ngAfterContentInit(): void {\n    this.detectSlotChanges();\n  }\n\n  ngAfterContentChecked(): void {\n    this.detectSlotChanges();\n  }\n\n  /**\n   * @internal\n   */\n  onPageSelected(detail: StackEvent): void {\n    const stackId = detail.enteringView.stackId;\n    if (detail.tabSwitch && stackId !== undefined) {\n      this.ionTabsWillChange.emit({ tab: stackId });\n      if (this.tabBar) {\n        this.tabBar.selectedTab = stackId;\n      }\n      this.ionTabsDidChange.emit({ tab: stackId });\n    }\n  }\n\n  /**\n   * When a tab button is clicked, there are several scenarios:\n   * 1. If the selected tab is currently active (the tab button has been clicked\n   *    again), then it should go to the root view for that tab.\n   *\n   *   a. Get the saved root view from the router outlet. If the saved root view\n   *      matches the tabRootUrl, set the route view to this view including the\n   *      navigation extras.\n   *   b. If the saved root view from the router outlet does\n   *      not match, navigate to the tabRootUrl. No navigation extras are\n   *      included.\n   *\n   * 2. If the current tab tab is not currently selected, get the last route\n   *    view from the router outlet.\n   *\n   *   a. If the last route view exists, navigate to that view including any\n   *      navigation extras\n   *   b. If the last route view doesn't exist, then navigate\n   *      to the default tabRootUrl\n   */\n  @HostListener('ionTabButtonClick', ['$event'])\n  select(tabOrEvent: string | CustomEvent): Promise<boolean> | undefined {\n    const isTabString = typeof tabOrEvent === 'string';\n    const tab = isTabString ? tabOrEvent : (tabOrEvent as CustomEvent).detail.tab;\n    const alreadySelected = this.outlet.getActiveStackId() === tab;\n    const tabRootUrl = `${this.outlet.tabsPrefix}/${tab}`;\n\n    /**\n     * If this is a nested tab, prevent the event\n     * from bubbling otherwise the outer tabs\n     * will respond to this event too, causing\n     * the app to get directed to the wrong place.\n     */\n    if (!isTabString) {\n      (tabOrEvent as CustomEvent).stopPropagation();\n    }\n\n    if (alreadySelected) {\n      const activeStackId = this.outlet.getActiveStackId();\n      const activeView = this.outlet.getLastRouteView(activeStackId);\n\n      // If on root tab, do not navigate to root tab again\n      if (activeView?.url === tabRootUrl) {\n        return;\n      }\n\n      const rootView = this.outlet.getRootView(tab);\n      const navigationExtras = rootView && tabRootUrl === rootView.url && rootView.savedExtras;\n      return this.navCtrl.navigateRoot(tabRootUrl, {\n        ...navigationExtras,\n        animated: true,\n        animationDirection: 'back',\n      });\n    } else {\n      const lastRoute = this.outlet.getLastRouteView(tab);\n      /**\n       * If there is a lastRoute, goto that, otherwise goto the fallback url of the\n       * selected tab\n       */\n      const url = lastRoute?.url || tabRootUrl;\n      const navigationExtras = lastRoute?.savedExtras;\n\n      return this.navCtrl.navigateRoot(url, {\n        ...navigationExtras,\n        animated: true,\n        animationDirection: 'back',\n      });\n    }\n  }\n\n  getSelected(): string | undefined {\n    return this.outlet.getActiveStackId();\n  }\n\n  /**\n   * Detects changes to the slot attribute of the tab bar.\n   *\n   * If the slot attribute has changed, then the tab bar\n   * should be relocated to the new slot position.\n   */\n  private detectSlotChanges(): void {\n    this.tabBars.forEach((tabBar: any) => {\n      // el is a protected attribute from the generated component wrapper\n      const currentSlot = tabBar.el.getAttribute('slot');\n\n      if (currentSlot !== this.tabBarSlot) {\n        this.tabBarSlot = currentSlot;\n        this.relocateTabBar();\n      }\n    });\n  }\n\n  /**\n   * Relocates the tab bar to the new slot position.\n   */\n  private relocateTabBar(): void {\n    /**\n     * `el` is a protected attribute from the generated component wrapper.\n     * To avoid having to manually create the wrapper for tab bar, we\n     * cast the tab bar to any and access the protected attribute.\n     */\n    const tabBar = (this.tabBar as any).el as HTMLElement;\n\n    if (this.tabBarSlot === 'top') {\n      /**\n       * A tab bar with a slot of \"top\" should be inserted\n       * at the top of the container.\n       */\n      this.tabsInner.nativeElement.before(tabBar);\n    } else {\n      /**\n       * A tab bar with a slot of \"bottom\" or without a slot\n       * should be inserted at the end of the container.\n       */\n      this.tabsInner.nativeElement.after(tabBar);\n    }\n  }\n}\n"]}