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feat(router): implement RouterLinkActive

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This commit is contained in:
vsavkin
2016-06-15 09:01:05 -07:00
parent 2aa19fd078
commit 25560ed048
8 changed files with 296 additions and 4 deletions
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55
modules/@angular/router/src/url_tree.ts
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@ -6,6 +6,53 @@ export function createEmptyUrlTree() {
return new UrlTree(new UrlSegment([], {}), {}, null);
}
export function containsTree(container: UrlTree, containee: UrlTree, exact: boolean): boolean {
if (exact) {
return equalSegments(container.root, containee.root);
} else {
return containsSegment(container.root, containee.root);
}
}
function equalSegments(container: UrlSegment, containee: UrlSegment): boolean {
if (!equalPath(container.pathsWithParams, containee.pathsWithParams)) return false;
if (Object.keys(container.children).length !== Object.keys(containee.children).length)
return false;
for (let c in containee.children) {
if (!container.children[c]) return false;
if (!equalSegments(container.children[c], containee.children[c])) return false;
}
return true;
}
function containsSegment(container: UrlSegment, containee: UrlSegment): boolean {
return containsSegmentHelper(container, containee, containee.pathsWithParams);
}
function containsSegmentHelper(
container: UrlSegment, containee: UrlSegment, containeePaths: UrlPathWithParams[]): boolean {
if (container.pathsWithParams.length > containeePaths.length) {
const current = container.pathsWithParams.slice(0, containeePaths.length);
if (!equalPath(current, containeePaths)) return false;
if (Object.keys(containee.children).length > 0) return false;
return true;
} else if (container.pathsWithParams.length === containeePaths.length) {
if (!equalPath(container.pathsWithParams, containeePaths)) return false;
for (let c in containee.children) {
if (!container.children[c]) return false;
if (!containsSegment(container.children[c], containee.children[c])) return false;
}
return true;
} else {
const current = containeePaths.slice(0, container.pathsWithParams.length);
const next = containeePaths.slice(container.pathsWithParams.length);
if (!equalPath(container.pathsWithParams, current)) return false;
return containsSegmentHelper(container.children[PRIMARY_OUTLET], containee, next);
}
}
/**
* A URL in the tree form.
*/
@ -44,6 +91,14 @@ export function equalPathsWithParams(a: UrlPathWithParams[], b: UrlPathWithParam
return true;
}
export function equalPath(a: UrlPathWithParams[], b: UrlPathWithParams[]): boolean {
if (a.length !== b.length) return false;
for (let i = 0; i < a.length; ++i) {
if (a[i].path !== b[i].path) return false;
}
return true;
}
export function mapChildren(segment: UrlSegment, fn: (v: UrlSegment, k: string) => UrlSegment):
{[name: string]: UrlSegment} {
const newChildren: {[name: string]: UrlSegment} = {};