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TypeScript

import { CoreTypes } from '../../../core-types';
import { Trace } from '../../../trace';
import { CSSType, View } from '../../core/view';
import { GridLayout } from '../grid-layout';
import { RootLayout, RootLayoutOptions, ShadeCoverOptions, TransitionAnimation } from '.';
import { Animation } from '../../animation';
import { AnimationDefinition } from '../../animation';
import { isNumber } from '../../../utils/types';
@CSSType('RootLayout')
export class RootLayoutBase extends GridLayout {
private shadeCover: View;
private staticChildCount: number;
private popupViews: { view: View; options: RootLayoutOptions }[] = [];
constructor() {
super();
global.rootLayout = this;
}
public onLoaded() {
// get actual content count of rootLayout (elements between the <RootLayout> tags in the template).
// All popups will be inserted dynamically at a higher index
this.staticChildCount = this.getChildrenCount();
super.onLoaded();
}
public _onLivesync(context?: ModuleContext): boolean {
let handled = false;
if (this.popupViews.length > 0) {
this.closeAll();
handled = true;
}
if (super._onLivesync(context)) {
handled = true;
}
return handled;
}
/**
* Ability to add any view instance to composite views like layers.
*
* @param view
* @param options
* @returns
*/
open(view: View, options: RootLayoutOptions = {}): Promise<void> {
return new Promise((resolve, reject) => {
if (!(view instanceof View)) {
return reject(new Error(`Invalid open view: ${view}`));
}
if (this.hasChild(view)) {
return reject(new Error(`${view} has already been added`));
}
const toOpen = [];
const enterAnimationDefinition = options.animation ? options.animation.enterFrom : null;
// keep track of the views locally to be able to use their options later
this.popupViews.push({ view: view, options: options });
if (options.shadeCover) {
// perf optimization note: we only need 1 layer of shade cover
// we just update properties if needed by additional overlaid views
if (this.shadeCover) {
// overwrite current shadeCover options if topmost popupview has additional shadeCover configurations
toOpen.push(this.updateShadeCover(this.shadeCover, options.shadeCover));
} else {
toOpen.push(this.openShadeCover(options.shadeCover));
}
}
view.opacity = 0; // always begin with view invisible when adding dynamically
this.insertChild(view, this.getChildrenCount() + 1);
toOpen.push(
new Promise<void>((res, rej) => {
setTimeout(() => {
// only apply initial state and animate after the first tick - ensures safe areas and other measurements apply correctly
this.applyInitialState(view, enterAnimationDefinition);
this.getEnterAnimation(view, enterAnimationDefinition)
.play()
.then(
() => {
this.applyDefaultState(view);
view.notify({ eventName: 'opened', object: view });
res();
},
(err) => {
rej(new Error(`Error playing enter animation: ${err}`));
}
);
});
})
);
Promise.all(toOpen).then(
() => {
resolve();
},
(err) => {
reject(err);
}
);
});
}
/**
* Ability to remove any view instance from composite views.
* Optional animation parameter to overwrite close animation declared when opening popup.
*
* @param view
* @param exitTo
* @returns
*/
close(view: View, exitTo?: TransitionAnimation): Promise<void> {
return new Promise((resolve, reject) => {
if (!(view instanceof View)) {
return reject(new Error(`Invalid close view: ${view}`));
}
if (!this.hasChild(view)) {
return reject(new Error(`Unable to close popup. ${view} not found`));
}
const toClose = [];
const popupIndex = this.getPopupIndex(view);
const poppedView = this.popupViews[popupIndex];
const cleanupAndFinish = () => {
view.notify({ eventName: 'closed', object: view });
this.removeChild(view);
resolve();
};
// use exitAnimation that is passed in and fallback to the exitAnimation passed in when opening
const exitAnimationDefinition = exitTo || poppedView?.options?.animation?.exitTo;
// Remove view from tracked popupviews
this.popupViews.splice(popupIndex, 1);
toClose.push(
new Promise<void>((res, rej) => {
if (exitAnimationDefinition) {
this.getExitAnimation(view, exitAnimationDefinition)
.play()
.then(res, (err) => {
rej(new Error(`Error playing exit animation: ${err}`));
});
} else {
res();
}
})
);
if (this.shadeCover) {
// Update shade cover with the topmost popupView options (if not specifically told to ignore)
if (this.popupViews.length) {
if (!poppedView?.options?.shadeCover?.ignoreShadeRestore) {
const shadeCoverOptions = this.popupViews[this.popupViews.length - 1].options?.shadeCover;
if (shadeCoverOptions) {
toClose.push(this.updateShadeCover(this.shadeCover, shadeCoverOptions));
}
}
} else {
// Remove shade cover animation if this is the last opened popup view
toClose.push(this.closeShadeCover(poppedView?.options?.shadeCover));
}
}
Promise.all(toClose).then(
() => {
cleanupAndFinish();
},
(err) => {
reject(err);
}
);
});
}
closeAll(): Promise<void[]> {
const toClose = [];
const views = this.popupViews.map((popupView) => popupView.view);
// Close all views at the same time and wait for all of them
for (const view of views) {
toClose.push(this.close(view));
}
return Promise.all(toClose);
}
getShadeCover(): View {
return this.shadeCover;
}
openShadeCover(options: ShadeCoverOptions = {}): Promise<void> {
return new Promise((resolve) => {
if (this.shadeCover) {
if (Trace.isEnabled()) {
Trace.write(`RootLayout shadeCover already open.`, Trace.categories.Layout, Trace.messageType.warn);
}
resolve();
} else {
// Create the one and only shade cover
const shadeCover = this.createShadeCover();
shadeCover.on('loaded', () => {
this._initShadeCover(shadeCover, options);
this.updateShadeCover(shadeCover, options).then(() => {
resolve();
});
});
this.shadeCover = shadeCover;
// Insert shade cover at index right above the first layout
this.insertChild(this.shadeCover, this.staticChildCount + 1);
}
});
}
closeShadeCover(shadeCoverOptions: ShadeCoverOptions = {}): Promise<void> {
return new Promise((resolve) => {
// if shade cover is displayed and the last popup is closed, also close the shade cover
if (this.shadeCover) {
return this._closeShadeCover(this.shadeCover, shadeCoverOptions).then(() => {
if (this.shadeCover) {
this.shadeCover.off('loaded');
if (this.shadeCover.parent) {
this.removeChild(this.shadeCover);
}
}
this.shadeCover = null;
// cleanup any platform specific details related to shade cover
this._cleanupPlatformShadeCover();
resolve();
});
}
resolve();
});
}
topmost(): View {
return this.popupViews.length ? this.popupViews[this.popupViews.length - 1].view : null;
}
// bring any view instance open on the rootlayout to front of all the children visually
bringToFront(view: View, animated: boolean = false): Promise<void> {
return new Promise((resolve, reject) => {
if (!(view instanceof View)) {
return reject(new Error(`Invalid bringToFront view: ${view}`));
}
if (!this.hasChild(view)) {
return reject(new Error(`${view} not found or already at topmost`));
}
const popupIndex = this.getPopupIndex(view);
// popupview should be present and not already the topmost view
if (popupIndex < 0 || popupIndex == this.popupViews.length - 1) {
return reject(new Error(`${view} not found or already at topmost`));
}
// keep the popupViews array in sync with the stacking of the views
const currentView = this.popupViews[this.getPopupIndex(view)];
this.popupViews.splice(this.getPopupIndex(view), 1);
this.popupViews.push(currentView);
const exitAnimation = this.getViewExitState(view);
if (animated && exitAnimation) {
this.getExitAnimation(view, exitAnimation)
.play()
.then(() => {
this._bringToFront(view);
const initialState = this.getViewInitialState(currentView.view);
if (initialState) {
this.applyInitialState(view, initialState);
this.getEnterAnimation(view, initialState)
.play()
.then(() => {
this.applyDefaultState(view);
})
.catch((ex) => {
reject(new Error(`Error playing enter animation: ${ex}`));
});
} else {
this.applyDefaultState(view);
}
})
.catch((ex) => {
this._bringToFront(view);
reject(new Error(`Error playing exit animation: ${ex}`));
});
} else {
this._bringToFront(view);
}
// update shadeCover to reflect topmost's shadeCover options
const shadeCoverOptions = currentView?.options?.shadeCover;
if (shadeCoverOptions) {
this.updateShadeCover(this.shadeCover, shadeCoverOptions);
}
resolve();
});
}
private getPopupIndex(view: View): number {
return this.popupViews.findIndex((popupView) => popupView.view === view);
}
private getViewInitialState(view: View): TransitionAnimation {
const popupIndex = this.getPopupIndex(view);
if (popupIndex === -1) {
return;
}
const initialState = this.popupViews[popupIndex]?.options?.animation?.enterFrom;
if (!initialState) {
return;
}
return initialState;
}
private getViewExitState(view: View): TransitionAnimation {
const popupIndex = this.getPopupIndex(view);
if (popupIndex === -1) {
return;
}
const exitAnimation = this.popupViews[popupIndex]?.options?.animation?.exitTo;
if (!exitAnimation) {
return;
}
return exitAnimation;
}
private applyInitialState(targetView: View, enterFrom: TransitionAnimation): void {
const animationOptions = {
...defaultTransitionAnimation,
...(enterFrom || {}),
};
targetView.translateX = animationOptions.translateX;
targetView.translateY = animationOptions.translateY;
targetView.scaleX = animationOptions.scaleX;
targetView.scaleY = animationOptions.scaleY;
targetView.rotate = animationOptions.rotate;
targetView.opacity = animationOptions.opacity;
}
private applyDefaultState(targetView: View): void {
targetView.translateX = 0;
targetView.translateY = 0;
targetView.scaleX = 1;
targetView.scaleY = 1;
targetView.rotate = 0;
targetView.opacity = 1;
}
private getEnterAnimation(targetView: View, enterFrom: TransitionAnimation): Animation {
const animationOptions = {
...defaultTransitionAnimation,
...(enterFrom || {}),
};
return new Animation([
{
target: targetView,
translate: { x: 0, y: 0 },
scale: { x: 1, y: 1 },
rotate: 0,
opacity: 1,
duration: animationOptions.duration,
curve: animationOptions.curve,
},
]);
}
private getExitAnimation(targetView: View, exitTo: TransitionAnimation): Animation {
return new Animation([this.getExitAnimationDefinition(targetView, exitTo)]);
}
private getExitAnimationDefinition(targetView: View, exitTo: TransitionAnimation): AnimationDefinition {
return {
target: targetView,
...defaultTransitionAnimation,
...(exitTo || {}),
translate: { x: isNumber(exitTo.translateX) ? exitTo.translateX : defaultTransitionAnimation.translateX, y: isNumber(exitTo.translateY) ? exitTo.translateY : defaultTransitionAnimation.translateY },
scale: { x: isNumber(exitTo.scaleX) ? exitTo.scaleX : defaultTransitionAnimation.scaleX, y: isNumber(exitTo.scaleY) ? exitTo.scaleY : defaultTransitionAnimation.scaleY },
};
}
private createShadeCover(): View {
const shadeCover = new GridLayout();
shadeCover.verticalAlignment = 'bottom';
return shadeCover;
}
private updateShadeCover(shade: View, shadeOptions: ShadeCoverOptions = {}): Promise<void> {
if (shadeOptions.tapToClose !== undefined && shadeOptions.tapToClose !== null) {
shade.off('tap');
if (shadeOptions.tapToClose) {
shade.on('tap', () => {
this.closeAll();
});
}
}
return this._updateShadeCover(shade, shadeOptions);
}
private hasChild(view: View): boolean {
return this.getChildIndex(view) >= 0;
}
protected _bringToFront(view: View) {}
protected _initShadeCover(view: View, shadeOption: ShadeCoverOptions): void {}
protected _updateShadeCover(view: View, shadeOption: ShadeCoverOptions): Promise<void> {
return new Promise(() => {});
}
protected _closeShadeCover(view: View, shadeOptions: ShadeCoverOptions): Promise<void> {
return new Promise(() => {});
}
protected _cleanupPlatformShadeCover(): void {}
}
export function getRootLayout(): RootLayout {
return <RootLayout>global.rootLayout;
}
export const defaultTransitionAnimation: TransitionAnimation = {
translateX: 0,
translateY: 0,
scaleX: 1,
scaleY: 1,
rotate: 0,
opacity: 1,
duration: 300,
curve: CoreTypes.AnimationCurve.easeIn,
};
export const defaultShadeCoverTransitionAnimation: TransitionAnimation = {
...defaultTransitionAnimation,
opacity: 0, // default to fade in/out
};
export const defaultShadeCoverOptions: ShadeCoverOptions = {
opacity: 0.5,
color: '#000000',
tapToClose: true,
animation: {
enterFrom: defaultShadeCoverTransitionAnimation,
exitTo: defaultShadeCoverTransitionAnimation,
},
ignoreShadeRestore: false,
};