1 | /**
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2 | * @license
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3 | * Copyright Google LLC All Rights Reserved.
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4 | *
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5 | * Use of this source code is governed by an MIT-style license that can be
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6 | * found in the LICENSE file at https://angular.io/license
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7 | */
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8 | import { map } from 'rxjs/operators';
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9 | import { ActivationEnd, ChildActivationEnd } from '../events';
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10 | import { advanceActivatedRoute } from '../router_state';
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11 | import { forEach } from '../utils/collection';
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12 | import { nodeChildrenAsMap } from '../utils/tree';
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13 | export const activateRoutes = (rootContexts, routeReuseStrategy, forwardEvent) => map(t => {
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14 | new ActivateRoutes(routeReuseStrategy, t.targetRouterState, t.currentRouterState, forwardEvent)
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15 | .activate(rootContexts);
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16 | return t;
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17 | });
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18 | export class ActivateRoutes {
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19 | constructor(routeReuseStrategy, futureState, currState, forwardEvent) {
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20 | this.routeReuseStrategy = routeReuseStrategy;
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21 | this.futureState = futureState;
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22 | this.currState = currState;
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23 | this.forwardEvent = forwardEvent;
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24 | }
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25 | activate(parentContexts) {
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26 | const futureRoot = this.futureState._root;
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27 | const currRoot = this.currState ? this.currState._root : null;
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28 | this.deactivateChildRoutes(futureRoot, currRoot, parentContexts);
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29 | advanceActivatedRoute(this.futureState.root);
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30 | this.activateChildRoutes(futureRoot, currRoot, parentContexts);
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31 | }
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32 | // De-activate the child route that are not re-used for the future state
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33 | deactivateChildRoutes(futureNode, currNode, contexts) {
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34 | const children = nodeChildrenAsMap(currNode);
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35 | // Recurse on the routes active in the future state to de-activate deeper children
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36 | futureNode.children.forEach(futureChild => {
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37 | const childOutletName = futureChild.value.outlet;
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38 | this.deactivateRoutes(futureChild, children[childOutletName], contexts);
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39 | delete children[childOutletName];
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40 | });
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41 | // De-activate the routes that will not be re-used
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42 | forEach(children, (v, childName) => {
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43 | this.deactivateRouteAndItsChildren(v, contexts);
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44 | });
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45 | }
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46 | deactivateRoutes(futureNode, currNode, parentContext) {
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47 | const future = futureNode.value;
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48 | const curr = currNode ? currNode.value : null;
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49 | if (future === curr) {
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50 | // Reusing the node, check to see if the children need to be de-activated
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51 | if (future.component) {
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52 | // If we have a normal route, we need to go through an outlet.
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53 | const context = parentContext.getContext(future.outlet);
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54 | if (context) {
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55 | this.deactivateChildRoutes(futureNode, currNode, context.children);
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56 | }
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57 | }
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58 | else {
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59 | // if we have a componentless route, we recurse but keep the same outlet map.
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60 | this.deactivateChildRoutes(futureNode, currNode, parentContext);
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61 | }
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62 | }
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63 | else {
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64 | if (curr) {
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65 | // Deactivate the current route which will not be re-used
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66 | this.deactivateRouteAndItsChildren(currNode, parentContext);
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67 | }
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68 | }
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69 | }
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70 | deactivateRouteAndItsChildren(route, parentContexts) {
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71 | if (this.routeReuseStrategy.shouldDetach(route.value.snapshot)) {
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72 | this.detachAndStoreRouteSubtree(route, parentContexts);
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73 | }
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74 | else {
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75 | this.deactivateRouteAndOutlet(route, parentContexts);
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76 | }
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77 | }
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78 | detachAndStoreRouteSubtree(route, parentContexts) {
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79 | const context = parentContexts.getContext(route.value.outlet);
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80 | if (context && context.outlet) {
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81 | const componentRef = context.outlet.detach();
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82 | const contexts = context.children.onOutletDeactivated();
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83 | this.routeReuseStrategy.store(route.value.snapshot, { componentRef, route, contexts });
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84 | }
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85 | }
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86 | deactivateRouteAndOutlet(route, parentContexts) {
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87 | const context = parentContexts.getContext(route.value.outlet);
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88 | // The context could be `null` if we are on a componentless route but there may still be
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89 | // children that need deactivating.
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90 | const contexts = context && route.value.component ? context.children : parentContexts;
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91 | const children = nodeChildrenAsMap(route);
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92 | for (const childOutlet of Object.keys(children)) {
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93 | this.deactivateRouteAndItsChildren(children[childOutlet], contexts);
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94 | }
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95 | if (context && context.outlet) {
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96 | // Destroy the component
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97 | context.outlet.deactivate();
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98 | // Destroy the contexts for all the outlets that were in the component
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99 | context.children.onOutletDeactivated();
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100 | // Clear the information about the attached component on the context but keep the reference to
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101 | // the outlet.
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102 | context.attachRef = null;
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103 | context.resolver = null;
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104 | context.route = null;
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105 | }
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106 | }
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107 | activateChildRoutes(futureNode, currNode, contexts) {
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108 | const children = nodeChildrenAsMap(currNode);
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109 | futureNode.children.forEach(c => {
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110 | this.activateRoutes(c, children[c.value.outlet], contexts);
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111 | this.forwardEvent(new ActivationEnd(c.value.snapshot));
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112 | });
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113 | if (futureNode.children.length) {
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114 | this.forwardEvent(new ChildActivationEnd(futureNode.value.snapshot));
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115 | }
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116 | }
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117 | activateRoutes(futureNode, currNode, parentContexts) {
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118 | const future = futureNode.value;
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119 | const curr = currNode ? currNode.value : null;
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120 | advanceActivatedRoute(future);
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121 | // reusing the node
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122 | if (future === curr) {
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123 | if (future.component) {
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124 | // If we have a normal route, we need to go through an outlet.
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125 | const context = parentContexts.getOrCreateContext(future.outlet);
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126 | this.activateChildRoutes(futureNode, currNode, context.children);
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127 | }
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128 | else {
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129 | // if we have a componentless route, we recurse but keep the same outlet map.
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130 | this.activateChildRoutes(futureNode, currNode, parentContexts);
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131 | }
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132 | }
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133 | else {
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134 | if (future.component) {
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135 | // if we have a normal route, we need to place the component into the outlet and recurse.
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136 | const context = parentContexts.getOrCreateContext(future.outlet);
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137 | if (this.routeReuseStrategy.shouldAttach(future.snapshot)) {
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138 | const stored = this.routeReuseStrategy.retrieve(future.snapshot);
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139 | this.routeReuseStrategy.store(future.snapshot, null);
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140 | context.children.onOutletReAttached(stored.contexts);
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141 | context.attachRef = stored.componentRef;
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142 | context.route = stored.route.value;
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143 | if (context.outlet) {
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144 | // Attach right away when the outlet has already been instantiated
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145 | // Otherwise attach from `RouterOutlet.ngOnInit` when it is instantiated
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146 | context.outlet.attach(stored.componentRef, stored.route.value);
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147 | }
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148 | advanceActivatedRouteNodeAndItsChildren(stored.route);
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149 | }
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150 | else {
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151 | const config = parentLoadedConfig(future.snapshot);
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152 | const cmpFactoryResolver = config ? config.module.componentFactoryResolver : null;
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153 | context.attachRef = null;
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154 | context.route = future;
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155 | context.resolver = cmpFactoryResolver;
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156 | if (context.outlet) {
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157 | // Activate the outlet when it has already been instantiated
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158 | // Otherwise it will get activated from its `ngOnInit` when instantiated
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159 | context.outlet.activateWith(future, cmpFactoryResolver);
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160 | }
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161 | this.activateChildRoutes(futureNode, null, context.children);
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162 | }
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163 | }
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164 | else {
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165 | // if we have a componentless route, we recurse but keep the same outlet map.
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166 | this.activateChildRoutes(futureNode, null, parentContexts);
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167 | }
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168 | }
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169 | }
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170 | }
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171 | function advanceActivatedRouteNodeAndItsChildren(node) {
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172 | advanceActivatedRoute(node.value);
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173 | node.children.forEach(advanceActivatedRouteNodeAndItsChildren);
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174 | }
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175 | function parentLoadedConfig(snapshot) {
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176 | for (let s = snapshot.parent; s; s = s.parent) {
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177 | const route = s.routeConfig;
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178 | if (route && route._loadedConfig)
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179 | return route._loadedConfig;
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180 | if (route && route.component)
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181 | return null;
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182 | }
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183 | return null;
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184 | }
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185 | //# 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* @license\n * Copyright Google LLC 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, advanceActivatedRoute, RouterState} from '../router_state';\nimport {forEach} from '../utils/collection';\nimport {nodeChildrenAsMap, TreeNode} 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    // The context could be `null` if we are on a componentless route but there may still be\n    // children that need deactivating.\n    const contexts = context && route.value.component ? context.children : parentContexts;\n    const children: {[outletName: string]: TreeNode<ActivatedRoute>} = nodeChildrenAsMap(route);\n\n    for (const childOutlet of Object.keys(children)) {\n      this.deactivateRouteAndItsChildren(children[childOutlet], contexts);\n    }\n\n    if (context && 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      // Clear the information about the attached component on the context but keep the reference to\n      // the outlet.\n      context.attachRef = null;\n      context.resolver = null;\n      context.route = null;\n    }\n  }\n\n  private activateChildRoutes(\n      futureNode: TreeNode<ActivatedRoute>, currNode: TreeNode<ActivatedRoute>|null,\n      contexts: ChildrenOutletContexts): void {\n    const children: {[outlet: string]: TreeNode<ActivatedRoute>} = 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}\n"]} |
---|