@angular/router
Version:
Angular - the routing library
155 lines (154 loc) • 21.9 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 { equalParamsAndUrlSegments } from '../router_state';
import { forEach, shallowEqual } from '../utils/collection';
import { nodeChildrenAsMap } from '../utils/tree';
var CanActivate = /** @class */ (function () {
function CanActivate(path) {
this.path = path;
this.route = this.path[this.path.length - 1];
}
return CanActivate;
}());
export { CanActivate };
var CanDeactivate = /** @class */ (function () {
function CanDeactivate(component, route) {
this.component = component;
this.route = route;
}
return CanDeactivate;
}());
export { CanDeactivate };
export function getAllRouteGuards(future, curr, parentContexts) {
var futureRoot = future._root;
var currRoot = curr ? curr._root : null;
return getChildRouteGuards(futureRoot, currRoot, parentContexts, [futureRoot.value]);
}
export function getCanActivateChild(p) {
var canActivateChild = p.routeConfig ? p.routeConfig.canActivateChild : null;
if (!canActivateChild || canActivateChild.length === 0)
return null;
return { node: p, guards: canActivateChild };
}
export function getToken(token, snapshot, moduleInjector) {
var config = getClosestLoadedConfig(snapshot);
var injector = config ? config.module.injector : moduleInjector;
return injector.get(token);
}
function getClosestLoadedConfig(snapshot) {
if (!snapshot)
return null;
for (var s = snapshot.parent; s; s = s.parent) {
var route = s.routeConfig;
if (route && route._loadedConfig)
return route._loadedConfig;
}
return null;
}
function getChildRouteGuards(futureNode, currNode, contexts, futurePath, checks) {
if (checks === void 0) { checks = {
canDeactivateChecks: [],
canActivateChecks: []
}; }
var prevChildren = nodeChildrenAsMap(currNode);
// Process the children of the future route
futureNode.children.forEach(function (c) {
getRouteGuards(c, prevChildren[c.value.outlet], contexts, futurePath.concat([c.value]), checks);
delete prevChildren[c.value.outlet];
});
// Process any children left from the current route (not active for the future route)
forEach(prevChildren, function (v, k) {
return deactivateRouteAndItsChildren(v, contexts.getContext(k), checks);
});
return checks;
}
function getRouteGuards(futureNode, currNode, parentContexts, futurePath, checks) {
if (checks === void 0) { checks = {
canDeactivateChecks: [],
canActivateChecks: []
}; }
var future = futureNode.value;
var curr = currNode ? currNode.value : null;
var context = parentContexts ? parentContexts.getContext(futureNode.value.outlet) : null;
// reusing the node
if (curr && future.routeConfig === curr.routeConfig) {
var shouldRun = shouldRunGuardsAndResolvers(curr, future, future.routeConfig.runGuardsAndResolvers);
if (shouldRun) {
checks.canActivateChecks.push(new CanActivate(futurePath));
}
else {
// we need to set the data
future.data = curr.data;
future._resolvedData = curr._resolvedData;
}
// If we have a component, we need to go through an outlet.
if (future.component) {
getChildRouteGuards(futureNode, currNode, context ? context.children : null, futurePath, checks);
// if we have a componentless route, we recurse but keep the same outlet map.
}
else {
getChildRouteGuards(futureNode, currNode, parentContexts, futurePath, checks);
}
if (shouldRun) {
var outlet = context.outlet;
checks.canDeactivateChecks.push(new CanDeactivate(outlet.component, curr));
}
}
else {
if (curr) {
deactivateRouteAndItsChildren(currNode, context, checks);
}
checks.canActivateChecks.push(new CanActivate(futurePath));
// If we have a component, we need to go through an outlet.
if (future.component) {
getChildRouteGuards(futureNode, null, context ? context.children : null, futurePath, checks);
// if we have a componentless route, we recurse but keep the same outlet map.
}
else {
getChildRouteGuards(futureNode, null, parentContexts, futurePath, checks);
}
}
return checks;
}
function shouldRunGuardsAndResolvers(curr, future, mode) {
switch (mode) {
case 'always':
return true;
case 'paramsOrQueryParamsChange':
return !equalParamsAndUrlSegments(curr, future) ||
!shallowEqual(curr.queryParams, future.queryParams);
case 'paramsChange':
default:
return !equalParamsAndUrlSegments(curr, future);
}
}
function deactivateRouteAndItsChildren(route, context, checks) {
var children = nodeChildrenAsMap(route);
var r = route.value;
forEach(children, function (node, childName) {
if (!r.component) {
deactivateRouteAndItsChildren(node, context, checks);
}
else if (context) {
deactivateRouteAndItsChildren(node, context.children.getContext(childName), checks);
}
else {
deactivateRouteAndItsChildren(node, null, checks);
}
});
if (!r.component) {
checks.canDeactivateChecks.push(new CanDeactivate(null, r));
}
else if (context && context.outlet && context.outlet.isActivated) {
checks.canDeactivateChecks.push(new CanDeactivate(context.outlet.component, r));
}
else {
checks.canDeactivateChecks.push(new CanDeactivate(null, r));
}
}
//# 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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 {Injector} from '@angular/core';\n\nimport {LoadedRouterConfig, RunGuardsAndResolvers} from '../config';\nimport {ChildrenOutletContexts, OutletContext} from '../router_outlet_context';\nimport {ActivatedRouteSnapshot, RouterStateSnapshot, equalParamsAndUrlSegments} from '../router_state';\nimport {forEach, shallowEqual} from '../utils/collection';\nimport {TreeNode, nodeChildrenAsMap} from '../utils/tree';\n\nexport class CanActivate {\n  readonly route: ActivatedRouteSnapshot;\n  constructor(public path: ActivatedRouteSnapshot[]) {\n    this.route = this.path[this.path.length - 1];\n  }\n}\n\nexport class CanDeactivate {\n  constructor(public component: Object|null, public route: ActivatedRouteSnapshot) {}\n}\n\nexport declare type Checks = {\n  canDeactivateChecks: CanDeactivate[],\n  canActivateChecks: CanActivate[],\n};\n\nexport function getAllRouteGuards(\n    future: RouterStateSnapshot, curr: RouterStateSnapshot,\n    parentContexts: ChildrenOutletContexts) {\n  const futureRoot = future._root;\n  const currRoot = curr ? curr._root : null;\n\n  return getChildRouteGuards(futureRoot, currRoot, parentContexts, [futureRoot.value]);\n}\n\nexport function getCanActivateChild(p: ActivatedRouteSnapshot):\n    {node: ActivatedRouteSnapshot, guards: any[]}|null {\n  const canActivateChild = p.routeConfig ? p.routeConfig.canActivateChild : null;\n  if (!canActivateChild || canActivateChild.length === 0) return null;\n  return {node: p, guards: canActivateChild};\n}\n\nexport function getToken(\n    token: any, snapshot: ActivatedRouteSnapshot, moduleInjector: Injector): any {\n  const config = getClosestLoadedConfig(snapshot);\n  const injector = config ? config.module.injector : moduleInjector;\n  return injector.get(token);\n}\n\nfunction getClosestLoadedConfig(snapshot: ActivatedRouteSnapshot): LoadedRouterConfig|null {\n  if (!snapshot) return null;\n\n  for (let s = snapshot.parent; s; s = s.parent) {\n    const route = s.routeConfig;\n    if (route && route._loadedConfig) return route._loadedConfig;\n  }\n\n  return null;\n}\n\nfunction getChildRouteGuards(\n    futureNode: TreeNode<ActivatedRouteSnapshot>, currNode: TreeNode<ActivatedRouteSnapshot>| null,\n    contexts: ChildrenOutletContexts | null, futurePath: ActivatedRouteSnapshot[],\n    checks: Checks = {\n      canDeactivateChecks: [],\n      canActivateChecks: []\n    }): Checks {\n  const prevChildren = nodeChildrenAsMap(currNode);\n\n  // Process the children of the future route\n  futureNode.children.forEach(c => {\n    getRouteGuards(c, prevChildren[c.value.outlet], contexts, futurePath.concat([c.value]), checks);\n    delete prevChildren[c.value.outlet];\n  });\n\n  // Process any children left from the current route (not active for the future route)\n  forEach(\n      prevChildren, (v: TreeNode<ActivatedRouteSnapshot>, k: string) =>\n                        deactivateRouteAndItsChildren(v, contexts !.getContext(k), checks));\n\n  return checks;\n}\n\nfunction getRouteGuards(\n    futureNode: TreeNode<ActivatedRouteSnapshot>, currNode: TreeNode<ActivatedRouteSnapshot>,\n    parentContexts: ChildrenOutletContexts | null, futurePath: ActivatedRouteSnapshot[],\n    checks: Checks = {\n      canDeactivateChecks: [],\n      canActivateChecks: []\n    }): Checks {\n  const future = futureNode.value;\n  const curr = currNode ? currNode.value : null;\n  const context = parentContexts ? parentContexts.getContext(futureNode.value.outlet) : null;\n\n  // reusing the node\n  if (curr && future.routeConfig === curr.routeConfig) {\n    const shouldRun =\n        shouldRunGuardsAndResolvers(curr, future, future.routeConfig !.runGuardsAndResolvers);\n    if (shouldRun) {\n      checks.canActivateChecks.push(new CanActivate(futurePath));\n    } else {\n      // we need to set the data\n      future.data = curr.data;\n      future._resolvedData = curr._resolvedData;\n    }\n\n    // If we have a component, we need to go through an outlet.\n    if (future.component) {\n      getChildRouteGuards(\n          futureNode, currNode, context ? context.children : null, futurePath, checks);\n\n      // if we have a componentless route, we recurse but keep the same outlet map.\n    } else {\n      getChildRouteGuards(futureNode, currNode, parentContexts, futurePath, checks);\n    }\n\n    if (shouldRun) {\n      const outlet = context !.outlet !;\n      checks.canDeactivateChecks.push(new CanDeactivate(outlet.component, curr));\n    }\n  } else {\n    if (curr) {\n      deactivateRouteAndItsChildren(currNode, context, checks);\n    }\n\n    checks.canActivateChecks.push(new CanActivate(futurePath));\n    // If we have a component, we need to go through an outlet.\n    if (future.component) {\n      getChildRouteGuards(futureNode, null, context ? context.children : null, futurePath, checks);\n\n      // if we have a componentless route, we recurse but keep the same outlet map.\n    } else {\n      getChildRouteGuards(futureNode, null, parentContexts, futurePath, checks);\n    }\n  }\n\n  return checks;\n}\n\nfunction shouldRunGuardsAndResolvers(\n    curr: ActivatedRouteSnapshot, future: ActivatedRouteSnapshot,\n    mode: RunGuardsAndResolvers | undefined): boolean {\n  switch (mode) {\n    case 'always':\n      return true;\n\n    case 'paramsOrQueryParamsChange':\n      return !equalParamsAndUrlSegments(curr, future) ||\n          !shallowEqual(curr.queryParams, future.queryParams);\n\n    case 'paramsChange':\n    default:\n      return !equalParamsAndUrlSegments(curr, future);\n  }\n}\n\nfunction deactivateRouteAndItsChildren(\n    route: TreeNode<ActivatedRouteSnapshot>, context: OutletContext | null, checks: Checks): void {\n  const children = nodeChildrenAsMap(route);\n  const r = route.value;\n\n  forEach(children, (node: TreeNode<ActivatedRouteSnapshot>, childName: string) => {\n    if (!r.component) {\n      deactivateRouteAndItsChildren(node, context, checks);\n    } else if (context) {\n      deactivateRouteAndItsChildren(node, context.children.getContext(childName), checks);\n    } else {\n      deactivateRouteAndItsChildren(node, null, checks);\n    }\n  });\n\n  if (!r.component) {\n    checks.canDeactivateChecks.push(new CanDeactivate(null, r));\n  } else if (context && context.outlet && context.outlet.isActivated) {\n    checks.canDeactivateChecks.push(new CanDeactivate(context.outlet.component, r));\n  } else {\n    checks.canDeactivateChecks.push(new CanDeactivate(null, r));\n  }\n}\n"]}