/
view_manager_utils.ts
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/
view_manager_utils.ts
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import {Injector, Binding, Injectable} from 'angular2/di';
import {ListWrapper, MapWrapper, Map, StringMapWrapper, List} from 'angular2/src/facade/collection';
import * as eli from './element_injector';
import {isPresent, isBlank, BaseException} from 'angular2/src/facade/lang';
import * as viewModule from './view';
import * as avmModule from './view_manager';
import {Renderer} from 'angular2/src/render/api';
import {Locals} from 'angular2/change_detection';
import {DirectiveResolver} from './directive_resolver';
import {RenderViewRef} from 'angular2/src/render/api';
@Injectable()
export class AppViewManagerUtils {
_directiveResolver: DirectiveResolver;
constructor(metadataReader: DirectiveResolver) { this._directiveResolver = metadataReader; }
getComponentInstance(parentView: viewModule.AppView, boundElementIndex: number): any {
var binder = parentView.proto.elementBinders[boundElementIndex];
var eli = parentView.elementInjectors[boundElementIndex];
if (binder.hasDynamicComponent()) {
return eli.getDynamicallyLoadedComponent();
} else {
return eli.getComponent();
}
}
createView(protoView: viewModule.AppProtoView, renderView: RenderViewRef,
viewManager: avmModule.AppViewManager, renderer: Renderer): viewModule.AppView {
var view = new viewModule.AppView(renderer, protoView, protoView.protoLocals);
// TODO(tbosch): pass RenderViewRef as argument to AppView!
view.render = renderView;
var changeDetector = protoView.protoChangeDetector.instantiate(view);
var binders = protoView.elementBinders;
var elementInjectors = ListWrapper.createFixedSize(binders.length);
var rootElementInjectors = [];
var preBuiltObjects = ListWrapper.createFixedSize(binders.length);
var componentChildViews = ListWrapper.createFixedSize(binders.length);
for (var binderIdx = 0; binderIdx < binders.length; binderIdx++) {
var binder = binders[binderIdx];
var elementInjector = null;
// elementInjectors and rootElementInjectors
var protoElementInjector = binder.protoElementInjector;
if (isPresent(protoElementInjector)) {
if (isPresent(protoElementInjector.parent)) {
var parentElementInjector = elementInjectors[protoElementInjector.parent.index];
elementInjector = protoElementInjector.instantiate(parentElementInjector);
} else {
elementInjector = protoElementInjector.instantiate(null);
ListWrapper.push(rootElementInjectors, elementInjector);
}
}
elementInjectors[binderIdx] = elementInjector;
// preBuiltObjects
if (isPresent(elementInjector)) {
var embeddedProtoView = binder.hasEmbeddedProtoView() ? binder.nestedProtoView : null;
preBuiltObjects[binderIdx] = new eli.PreBuiltObjects(viewManager, view, embeddedProtoView);
}
}
view.init(changeDetector, elementInjectors, rootElementInjectors, preBuiltObjects,
componentChildViews);
return view;
}
attachComponentView(hostView: viewModule.AppView, boundElementIndex: number,
componentView: viewModule.AppView) {
var childChangeDetector = componentView.changeDetector;
hostView.changeDetector.addShadowDomChild(childChangeDetector);
hostView.componentChildViews[boundElementIndex] = componentView;
}
detachComponentView(hostView: viewModule.AppView, boundElementIndex: number) {
var componentView = hostView.componentChildViews[boundElementIndex];
hostView.changeDetector.removeShadowDomChild(componentView.changeDetector);
hostView.componentChildViews[boundElementIndex] = null;
}
hydrateComponentView(hostView: viewModule.AppView, boundElementIndex: number,
injector: Injector = null) {
var elementInjector = hostView.elementInjectors[boundElementIndex];
var componentView = hostView.componentChildViews[boundElementIndex];
var component = this.getComponentInstance(hostView, boundElementIndex);
this._hydrateView(componentView, injector, elementInjector, component, null);
}
hydrateRootHostView(hostView: viewModule.AppView, injector: Injector = null) {
this._hydrateView(hostView, injector, null, new Object(), null);
}
attachAndHydrateFreeHostView(parentComponentHostView: viewModule.AppView,
parentComponentBoundElementIndex: number,
hostView: viewModule.AppView, injector: Injector = null) {
var hostElementInjector =
parentComponentHostView.elementInjectors[parentComponentBoundElementIndex];
var parentView = parentComponentHostView.componentChildViews[parentComponentBoundElementIndex];
parentView.changeDetector.addChild(hostView.changeDetector);
ListWrapper.push(parentView.freeHostViews, hostView);
this._hydrateView(hostView, injector, hostElementInjector, new Object(), null);
}
detachFreeHostView(parentView: viewModule.AppView, hostView: viewModule.AppView) {
parentView.changeDetector.removeChild(hostView.changeDetector);
ListWrapper.remove(parentView.freeHostViews, hostView);
}
attachViewInContainer(parentView: viewModule.AppView, boundElementIndex: number,
contextView: viewModule.AppView, contextBoundElementIndex: number,
atIndex: number, view: viewModule.AppView) {
if (isBlank(contextView)) {
contextView = parentView;
contextBoundElementIndex = boundElementIndex;
}
parentView.changeDetector.addChild(view.changeDetector);
var viewContainer = parentView.viewContainers[boundElementIndex];
if (isBlank(viewContainer)) {
viewContainer = new viewModule.AppViewContainer();
parentView.viewContainers[boundElementIndex] = viewContainer;
}
ListWrapper.insert(viewContainer.views, atIndex, view);
var sibling;
if (atIndex == 0) {
sibling = null;
} else {
sibling = ListWrapper.last(viewContainer.views[atIndex - 1].rootElementInjectors)
}
var elementInjector = contextView.elementInjectors[contextBoundElementIndex];
for (var i = view.rootElementInjectors.length - 1; i >= 0; i--) {
view.rootElementInjectors[i].linkAfter(elementInjector, sibling);
}
}
detachViewInContainer(parentView: viewModule.AppView, boundElementIndex: number,
atIndex: number) {
var viewContainer = parentView.viewContainers[boundElementIndex];
var view = viewContainer.views[atIndex];
view.changeDetector.remove();
ListWrapper.removeAt(viewContainer.views, atIndex);
for (var i = 0; i < view.rootElementInjectors.length; ++i) {
view.rootElementInjectors[i].unlink();
}
}
hydrateViewInContainer(parentView: viewModule.AppView, boundElementIndex: number,
contextView: viewModule.AppView, contextBoundElementIndex: number,
atIndex: number, injector: Injector) {
if (isBlank(contextView)) {
contextView = parentView;
contextBoundElementIndex = boundElementIndex;
}
var viewContainer = parentView.viewContainers[boundElementIndex];
var view = viewContainer.views[atIndex];
var elementInjector = contextView.elementInjectors[contextBoundElementIndex].getHost();
this._hydrateView(view, injector, elementInjector, contextView.context, contextView.locals);
}
hydrateDynamicComponentInElementInjector(hostView: viewModule.AppView, boundElementIndex: number,
componentBinding: Binding, injector: Injector = null) {
var elementInjector = hostView.elementInjectors[boundElementIndex];
if (isPresent(elementInjector.getDynamicallyLoadedComponent())) {
throw new BaseException(
`There already is a dynamic component loaded at element ${boundElementIndex}`);
}
if (isBlank(injector)) {
injector = elementInjector.getLightDomAppInjector();
}
var annotation = this._directiveResolver.resolve(componentBinding.token);
var componentDirective = eli.DirectiveBinding.createFromBinding(componentBinding, annotation);
elementInjector.dynamicallyCreateComponent(componentDirective, injector);
}
_hydrateView(view: viewModule.AppView, appInjector: Injector,
hostElementInjector: eli.ElementInjector, context: Object, parentLocals: Locals) {
if (isBlank(appInjector)) {
appInjector = hostElementInjector.getShadowDomAppInjector();
}
if (isBlank(appInjector)) {
appInjector = hostElementInjector.getLightDomAppInjector();
}
view.context = context;
view.locals.parent = parentLocals;
var binders = view.proto.elementBinders;
for (var i = 0; i < binders.length; ++i) {
var elementInjector = view.elementInjectors[i];
if (isPresent(elementInjector)) {
elementInjector.hydrate(appInjector, hostElementInjector, view.preBuiltObjects[i]);
this._setUpEventEmitters(view, elementInjector, i);
this._setUpHostActions(view, elementInjector, i);
// The exporting of $implicit is a special case. Since multiple elements will all export
// the different values as $implicit, directly assign $implicit bindings to the variable
// name.
var exportImplicitName = elementInjector.getExportImplicitName();
if (elementInjector.isExportingComponent()) {
view.locals.set(exportImplicitName, elementInjector.getComponent());
} else if (elementInjector.isExportingElement()) {
view.locals.set(exportImplicitName, elementInjector.getElementRef().domElement);
}
}
}
view.changeDetector.hydrate(view.context, view.locals, view);
}
_setUpEventEmitters(view: viewModule.AppView, elementInjector: eli.ElementInjector,
boundElementIndex: number) {
var emitters = elementInjector.getEventEmitterAccessors();
for (var directiveIndex = 0; directiveIndex < emitters.length; ++directiveIndex) {
var directiveEmitters = emitters[directiveIndex];
var directive = elementInjector.getDirectiveAtIndex(directiveIndex);
for (var eventIndex = 0; eventIndex < directiveEmitters.length; ++eventIndex) {
var eventEmitterAccessor = directiveEmitters[eventIndex];
eventEmitterAccessor.subscribe(view, boundElementIndex, directive);
}
}
}
_setUpHostActions(view: viewModule.AppView, elementInjector: eli.ElementInjector,
boundElementIndex: number) {
var hostActions = elementInjector.getHostActionAccessors();
for (var directiveIndex = 0; directiveIndex < hostActions.length; ++directiveIndex) {
var directiveHostActions = hostActions[directiveIndex];
var directive = elementInjector.getDirectiveAtIndex(directiveIndex);
for (var index = 0; index < directiveHostActions.length; ++index) {
var hostActionAccessor = directiveHostActions[index];
hostActionAccessor.subscribe(view, boundElementIndex, directive);
}
}
}
dehydrateView(view: viewModule.AppView) {
var binders = view.proto.elementBinders;
for (var i = 0; i < binders.length; ++i) {
var elementInjector = view.elementInjectors[i];
if (isPresent(elementInjector)) {
elementInjector.dehydrate();
}
}
if (isPresent(view.locals)) {
view.locals.clearValues();
}
view.context = null;
view.changeDetector.dehydrate();
}
}