/
router-view.js
134 lines (109 loc) · 4.24 KB
/
router-view.js
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import {Container, inject} from 'aurelia-dependency-injection';
import {ViewSlot, ViewLocator, customElement, noView, BehaviorInstruction, bindable, CompositionTransaction} from 'aurelia-templating';
import {Router} from 'aurelia-router';
import {Origin} from 'aurelia-metadata';
import {DOM} from 'aurelia-pal';
class SwapStrategies {
// animate the next view in before removing the current view;
before(viewSlot, previousView, callback) {
let promise = Promise.resolve(callback());
if (previousView !== undefined) {
return promise.then(() => viewSlot.remove(previousView, true));
}
return promise;
}
// animate the next view at the same time the current view is removed
with(viewSlot, previousView, callback) {
let promise = Promise.resolve(callback());
if (previousView !== undefined) {
return Promise.all([viewSlot.remove(previousView, true), promise]);
}
return promise;
}
// animate the next view in after the current view has been removed
after(viewSlot, previousView, callback) {
return Promise.resolve(viewSlot.removeAll(true)).then(callback);
}
}
const swapStrategies = new SwapStrategies();
@customElement('router-view')
@noView
@inject(DOM.Element, Container, ViewSlot, Router, ViewLocator, CompositionTransaction)
export class RouterView {
@bindable swapOrder;
constructor(element, container, viewSlot, router, viewLocator, compositionTransaction) {
this.element = element;
this.container = container;
this.viewSlot = viewSlot;
this.router = router;
this.viewLocator = viewLocator;
this.compositionTransaction = compositionTransaction;
this.router.registerViewPort(this, this.element.getAttribute('name'));
if (!('initialComposition' in compositionTransaction)) {
compositionTransaction.initialComposition = true;
this.compositionTransactionNotifier = compositionTransaction.enlist();
}
}
created(owningView) {
this.owningView = owningView;
}
bind(bindingContext, overrideContext) {
this.container.viewModel = bindingContext;
this.overrideContext = overrideContext;
}
process(viewPortInstruction, waitToSwap) {
let component = viewPortInstruction.component;
let childContainer = component.childContainer;
let viewModel = component.viewModel;
let viewModelResource = component.viewModelResource;
let metadata = viewModelResource.metadata;
let viewStrategy = this.viewLocator.getViewStrategy(component.view || viewModel);
if (viewStrategy) {
viewStrategy.makeRelativeTo(Origin.get(component.router.container.viewModel.constructor).moduleId);
}
return metadata.load(childContainer, viewModelResource.value, null, viewStrategy, true).then(viewFactory => {
if (!this.compositionTransactionNotifier && !this.compositionTransaction.hasOwner) {
this.compositionTransactionOwnershipToken = this.compositionTransaction.tryCapture();
}
viewPortInstruction.controller = metadata.create(childContainer,
BehaviorInstruction.dynamic(
this.element,
viewModel,
viewFactory
)
);
if (waitToSwap) {
return;
}
this.swap(viewPortInstruction);
});
}
swap(viewPortInstruction) {
let work = () => {
let previousView = this.view;
let viewSlot = this.viewSlot;
let swapStrategy;
swapStrategy = this.swapOrder in swapStrategies
? swapStrategies[this.swapOrder]
: swapStrategies.after;
swapStrategy(viewSlot, previousView, () => {
return Promise.resolve(viewSlot.add(viewPortInstruction.controller.view)).then(() => {
if (this.compositionTransactionNotifier) {
this.compositionTransactionNotifier.done();
this.compositionTransactionNotifier = null;
}
});
});
this.view = viewPortInstruction.controller.view;
};
viewPortInstruction.controller.automate(this.overrideContext, this.owningView);
if (this.compositionTransactionOwnershipToken) {
return this.compositionTransactionOwnershipToken.waitForCompositionComplete().then(() => {
this.compositionTransactionOwnershipToken = null;
work();
});
} else {
work();
}
}
}