@angular/router
Version:
Angular - the routing library
186 lines (185 loc) • 29.6 kB
JavaScript
/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import { map } from 'rxjs/operators';
import { ActivationEnd, ChildActivationEnd } from '../events';
import { advanceActivatedRoute } from '../router_state';
import { forEach } from '../utils/collection';
import { nodeChildrenAsMap } from '../utils/tree';
export var activateRoutes = function (rootContexts, routeReuseStrategy, forwardEvent) {
return map(function (t) {
new ActivateRoutes(routeReuseStrategy, t.targetRouterState, t.currentRouterState, forwardEvent)
.activate(rootContexts);
return t;
});
};
var ActivateRoutes = /** @class */ (function () {
function ActivateRoutes(routeReuseStrategy, futureState, currState, forwardEvent) {
this.routeReuseStrategy = routeReuseStrategy;
this.futureState = futureState;
this.currState = currState;
this.forwardEvent = forwardEvent;
}
ActivateRoutes.prototype.activate = function (parentContexts) {
var futureRoot = this.futureState._root;
var currRoot = this.currState ? this.currState._root : null;
this.deactivateChildRoutes(futureRoot, currRoot, parentContexts);
advanceActivatedRoute(this.futureState.root);
this.activateChildRoutes(futureRoot, currRoot, parentContexts);
};
// De-activate the child route that are not re-used for the future state
ActivateRoutes.prototype.deactivateChildRoutes = function (futureNode, currNode, contexts) {
var _this = this;
var children = nodeChildrenAsMap(currNode);
// Recurse on the routes active in the future state to de-activate deeper children
futureNode.children.forEach(function (futureChild) {
var childOutletName = futureChild.value.outlet;
_this.deactivateRoutes(futureChild, children[childOutletName], contexts);
delete children[childOutletName];
});
// De-activate the routes that will not be re-used
forEach(children, function (v, childName) {
_this.deactivateRouteAndItsChildren(v, contexts);
});
};
ActivateRoutes.prototype.deactivateRoutes = function (futureNode, currNode, parentContext) {
var future = futureNode.value;
var curr = currNode ? currNode.value : null;
if (future === curr) {
// Reusing the node, check to see if the children need to be de-activated
if (future.component) {
// If we have a normal route, we need to go through an outlet.
var context = parentContext.getContext(future.outlet);
if (context) {
this.deactivateChildRoutes(futureNode, currNode, context.children);
}
}
else {
// if we have a componentless route, we recurse but keep the same outlet map.
this.deactivateChildRoutes(futureNode, currNode, parentContext);
}
}
else {
if (curr) {
// Deactivate the current route which will not be re-used
this.deactivateRouteAndItsChildren(currNode, parentContext);
}
}
};
ActivateRoutes.prototype.deactivateRouteAndItsChildren = function (route, parentContexts) {
if (this.routeReuseStrategy.shouldDetach(route.value.snapshot)) {
this.detachAndStoreRouteSubtree(route, parentContexts);
}
else {
this.deactivateRouteAndOutlet(route, parentContexts);
}
};
ActivateRoutes.prototype.detachAndStoreRouteSubtree = function (route, parentContexts) {
var context = parentContexts.getContext(route.value.outlet);
if (context && context.outlet) {
var componentRef = context.outlet.detach();
var contexts = context.children.onOutletDeactivated();
this.routeReuseStrategy.store(route.value.snapshot, { componentRef: componentRef, route: route, contexts: contexts });
}
};
ActivateRoutes.prototype.deactivateRouteAndOutlet = function (route, parentContexts) {
var _this = this;
var context = parentContexts.getContext(route.value.outlet);
if (context) {
var children = nodeChildrenAsMap(route);
var contexts_1 = route.value.component ? context.children : parentContexts;
forEach(children, function (v, k) { return _this.deactivateRouteAndItsChildren(v, contexts_1); });
if (context.outlet) {
// Destroy the component
context.outlet.deactivate();
// Destroy the contexts for all the outlets that were in the component
context.children.onOutletDeactivated();
}
}
};
ActivateRoutes.prototype.activateChildRoutes = function (futureNode, currNode, contexts) {
var _this = this;
var children = nodeChildrenAsMap(currNode);
futureNode.children.forEach(function (c) {
_this.activateRoutes(c, children[c.value.outlet], contexts);
_this.forwardEvent(new ActivationEnd(c.value.snapshot));
});
if (futureNode.children.length) {
this.forwardEvent(new ChildActivationEnd(futureNode.value.snapshot));
}
};
ActivateRoutes.prototype.activateRoutes = function (futureNode, currNode, parentContexts) {
var future = futureNode.value;
var curr = currNode ? currNode.value : null;
advanceActivatedRoute(future);
// reusing the node
if (future === curr) {
if (future.component) {
// If we have a normal route, we need to go through an outlet.
var context = parentContexts.getOrCreateContext(future.outlet);
this.activateChildRoutes(futureNode, currNode, context.children);
}
else {
// if we have a componentless route, we recurse but keep the same outlet map.
this.activateChildRoutes(futureNode, currNode, parentContexts);
}
}
else {
if (future.component) {
// if we have a normal route, we need to place the component into the outlet and recurse.
var context = parentContexts.getOrCreateContext(future.outlet);
if (this.routeReuseStrategy.shouldAttach(future.snapshot)) {
var stored = this.routeReuseStrategy.retrieve(future.snapshot);
this.routeReuseStrategy.store(future.snapshot, null);
context.children.onOutletReAttached(stored.contexts);
context.attachRef = stored.componentRef;
context.route = stored.route.value;
if (context.outlet) {
// Attach right away when the outlet has already been instantiated
// Otherwise attach from `RouterOutlet.ngOnInit` when it is instantiated
context.outlet.attach(stored.componentRef, stored.route.value);
}
advanceActivatedRouteNodeAndItsChildren(stored.route);
}
else {
var config = parentLoadedConfig(future.snapshot);
var cmpFactoryResolver = config ? config.module.componentFactoryResolver : null;
context.attachRef = null;
context.route = future;
context.resolver = cmpFactoryResolver;
if (context.outlet) {
// Activate the outlet when it has already been instantiated
// Otherwise it will get activated from its `ngOnInit` when instantiated
context.outlet.activateWith(future, cmpFactoryResolver);
}
this.activateChildRoutes(futureNode, null, context.children);
}
}
else {
// if we have a componentless route, we recurse but keep the same outlet map.
this.activateChildRoutes(futureNode, null, parentContexts);
}
}
};
return ActivateRoutes;
}());
export { ActivateRoutes };
function advanceActivatedRouteNodeAndItsChildren(node) {
advanceActivatedRoute(node.value);
node.children.forEach(advanceActivatedRouteNodeAndItsChildren);
}
function parentLoadedConfig(snapshot) {
for (var s = snapshot.parent; s; s = s.parent) {
var route = s.routeConfig;
if (route && route._loadedConfig)
return route._loadedConfig;
if (route && route.component)
return null;
}
return null;
}
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* @license\n * Copyright Google Inc. All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {MonoTypeOperatorFunction} from 'rxjs';\nimport {map} from 'rxjs/operators';\n\nimport {LoadedRouterConfig} from '../config';\nimport {ActivationEnd, ChildActivationEnd, Event} from '../events';\nimport {DetachedRouteHandleInternal, RouteReuseStrategy} from '../route_reuse_strategy';\nimport {NavigationTransition} from '../router';\nimport {ChildrenOutletContexts} from '../router_outlet_context';\nimport {ActivatedRoute, ActivatedRouteSnapshot, RouterState, advanceActivatedRoute} from '../router_state';\nimport {forEach} from '../utils/collection';\nimport {TreeNode, nodeChildrenAsMap} from '../utils/tree';\n\nexport const activateRoutes =\n    (rootContexts: ChildrenOutletContexts, routeReuseStrategy: RouteReuseStrategy,\n     forwardEvent: (evt: Event) => void): MonoTypeOperatorFunction<NavigationTransition> =>\n        map(t => {\n          new ActivateRoutes(\n              routeReuseStrategy, t.targetRouterState !, t.currentRouterState, forwardEvent)\n              .activate(rootContexts);\n          return t;\n        });\n\nexport class ActivateRoutes {\n  constructor(\n      private routeReuseStrategy: RouteReuseStrategy, private futureState: RouterState,\n      private currState: RouterState, private forwardEvent: (evt: Event) => void) {}\n\n  activate(parentContexts: ChildrenOutletContexts): void {\n    const futureRoot = this.futureState._root;\n    const currRoot = this.currState ? this.currState._root : null;\n\n    this.deactivateChildRoutes(futureRoot, currRoot, parentContexts);\n    advanceActivatedRoute(this.futureState.root);\n    this.activateChildRoutes(futureRoot, currRoot, parentContexts);\n  }\n\n  // De-activate the child route that are not re-used for the future state\n  private deactivateChildRoutes(\n      futureNode: TreeNode<ActivatedRoute>, currNode: TreeNode<ActivatedRoute>|null,\n      contexts: ChildrenOutletContexts): void {\n    const children: {[outletName: string]: TreeNode<ActivatedRoute>} = nodeChildrenAsMap(currNode);\n\n    // Recurse on the routes active in the future state to de-activate deeper children\n    futureNode.children.forEach(futureChild => {\n      const childOutletName = futureChild.value.outlet;\n      this.deactivateRoutes(futureChild, children[childOutletName], contexts);\n      delete children[childOutletName];\n    });\n\n    // De-activate the routes that will not be re-used\n    forEach(children, (v: TreeNode<ActivatedRoute>, childName: string) => {\n      this.deactivateRouteAndItsChildren(v, contexts);\n    });\n  }\n\n  private deactivateRoutes(\n      futureNode: TreeNode<ActivatedRoute>, currNode: TreeNode<ActivatedRoute>,\n      parentContext: ChildrenOutletContexts): void {\n    const future = futureNode.value;\n    const curr = currNode ? currNode.value : null;\n\n    if (future === curr) {\n      // Reusing the node, check to see if the children need to be de-activated\n      if (future.component) {\n        // If we have a normal route, we need to go through an outlet.\n        const context = parentContext.getContext(future.outlet);\n        if (context) {\n          this.deactivateChildRoutes(futureNode, currNode, context.children);\n        }\n      } else {\n        // if we have a componentless route, we recurse but keep the same outlet map.\n        this.deactivateChildRoutes(futureNode, currNode, parentContext);\n      }\n    } else {\n      if (curr) {\n        // Deactivate the current route which will not be re-used\n        this.deactivateRouteAndItsChildren(currNode, parentContext);\n      }\n    }\n  }\n\n  private deactivateRouteAndItsChildren(\n      route: TreeNode<ActivatedRoute>, parentContexts: ChildrenOutletContexts): void {\n    if (this.routeReuseStrategy.shouldDetach(route.value.snapshot)) {\n      this.detachAndStoreRouteSubtree(route, parentContexts);\n    } else {\n      this.deactivateRouteAndOutlet(route, parentContexts);\n    }\n  }\n\n  private detachAndStoreRouteSubtree(\n      route: TreeNode<ActivatedRoute>, parentContexts: ChildrenOutletContexts): void {\n    const context = parentContexts.getContext(route.value.outlet);\n    if (context && context.outlet) {\n      const componentRef = context.outlet.detach();\n      const contexts = context.children.onOutletDeactivated();\n      this.routeReuseStrategy.store(route.value.snapshot, {componentRef, route, contexts});\n    }\n  }\n\n  private deactivateRouteAndOutlet(\n      route: TreeNode<ActivatedRoute>, parentContexts: ChildrenOutletContexts): void {\n    const context = parentContexts.getContext(route.value.outlet);\n\n    if (context) {\n      const children: {[outletName: string]: any} = nodeChildrenAsMap(route);\n      const contexts = route.value.component ? context.children : parentContexts;\n\n      forEach(children, (v: any, k: string) => this.deactivateRouteAndItsChildren(v, contexts));\n\n      if (context.outlet) {\n        // Destroy the component\n        context.outlet.deactivate();\n        // Destroy the contexts for all the outlets that were in the component\n        context.children.onOutletDeactivated();\n      }\n    }\n  }\n\n  private activateChildRoutes(\n      futureNode: TreeNode<ActivatedRoute>, currNode: TreeNode<ActivatedRoute>|null,\n      contexts: ChildrenOutletContexts): void {\n    const children: {[outlet: string]: any} = nodeChildrenAsMap(currNode);\n    futureNode.children.forEach(c => {\n      this.activateRoutes(c, children[c.value.outlet], contexts);\n      this.forwardEvent(new ActivationEnd(c.value.snapshot));\n    });\n    if (futureNode.children.length) {\n      this.forwardEvent(new ChildActivationEnd(futureNode.value.snapshot));\n    }\n  }\n\n  private activateRoutes(\n      futureNode: TreeNode<ActivatedRoute>, currNode: TreeNode<ActivatedRoute>,\n      parentContexts: ChildrenOutletContexts): void {\n    const future = futureNode.value;\n    const curr = currNode ? currNode.value : null;\n\n    advanceActivatedRoute(future);\n\n    // reusing the node\n    if (future === curr) {\n      if (future.component) {\n        // If we have a normal route, we need to go through an outlet.\n        const context = parentContexts.getOrCreateContext(future.outlet);\n        this.activateChildRoutes(futureNode, currNode, context.children);\n      } else {\n        // if we have a componentless route, we recurse but keep the same outlet map.\n        this.activateChildRoutes(futureNode, currNode, parentContexts);\n      }\n    } else {\n      if (future.component) {\n        // if we have a normal route, we need to place the component into the outlet and recurse.\n        const context = parentContexts.getOrCreateContext(future.outlet);\n\n        if (this.routeReuseStrategy.shouldAttach(future.snapshot)) {\n          const stored =\n              (<DetachedRouteHandleInternal>this.routeReuseStrategy.retrieve(future.snapshot));\n          this.routeReuseStrategy.store(future.snapshot, null);\n          context.children.onOutletReAttached(stored.contexts);\n          context.attachRef = stored.componentRef;\n          context.route = stored.route.value;\n          if (context.outlet) {\n            // Attach right away when the outlet has already been instantiated\n            // Otherwise attach from `RouterOutlet.ngOnInit` when it is instantiated\n            context.outlet.attach(stored.componentRef, stored.route.value);\n          }\n          advanceActivatedRouteNodeAndItsChildren(stored.route);\n        } else {\n          const config = parentLoadedConfig(future.snapshot);\n          const cmpFactoryResolver = config ? config.module.componentFactoryResolver : null;\n\n          context.attachRef = null;\n          context.route = future;\n          context.resolver = cmpFactoryResolver;\n          if (context.outlet) {\n            // Activate the outlet when it has already been instantiated\n            // Otherwise it will get activated from its `ngOnInit` when instantiated\n            context.outlet.activateWith(future, cmpFactoryResolver);\n          }\n\n          this.activateChildRoutes(futureNode, null, context.children);\n        }\n      } else {\n        // if we have a componentless route, we recurse but keep the same outlet map.\n        this.activateChildRoutes(futureNode, null, parentContexts);\n      }\n    }\n  }\n}\n\nfunction advanceActivatedRouteNodeAndItsChildren(node: TreeNode<ActivatedRoute>): void {\n  advanceActivatedRoute(node.value);\n  node.children.forEach(advanceActivatedRouteNodeAndItsChildren);\n}\n\nfunction parentLoadedConfig(snapshot: ActivatedRouteSnapshot): LoadedRouterConfig|null {\n  for (let s = snapshot.parent; s; s = s.parent) {\n    const route = s.routeConfig;\n    if (route && route._loadedConfig) return route._loadedConfig;\n    if (route && route.component) return null;\n  }\n\n  return null;\n}"]}