| // Copyright 2019 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package frontend |
| |
| import ( |
| "context" |
| "fmt" |
| "net/http" |
| |
| "golang.org/x/pkgsite/internal" |
| "golang.org/x/pkgsite/internal/derrors" |
| ) |
| |
| // TabSettings defines tab-specific metadata. |
| type TabSettings struct { |
| // Name is the tab name used in the URL. |
| Name string |
| |
| // DisplayName is the formatted tab name. |
| DisplayName string |
| |
| // AlwaysShowDetails defines whether the tab content can be shown even if the |
| // package is not determined to be redistributable. |
| AlwaysShowDetails bool |
| |
| // TemplateName is the name of the template used to render the |
| // corresponding tab, as defined in Server.templates. |
| TemplateName string |
| |
| // Disabled indicates whether a tab should be displayed as disabled. |
| Disabled bool |
| } |
| |
| const ( |
| tabMain = "" |
| tabVersions = "versions" |
| tabImports = "imports" |
| tabImportedBy = "importedby" |
| tabLicenses = "licenses" |
| ) |
| |
| var ( |
| unitTabs = []TabSettings{ |
| { |
| Name: tabMain, |
| TemplateName: "unit/main", |
| }, |
| { |
| Name: tabVersions, |
| TemplateName: "unit/versions", |
| }, |
| { |
| Name: tabImports, |
| TemplateName: "unit/imports", |
| }, |
| { |
| Name: tabImportedBy, |
| TemplateName: "unit/importedby", |
| }, |
| { |
| Name: tabLicenses, |
| TemplateName: "unit/licenses", |
| }, |
| } |
| unitTabLookup = make(map[string]TabSettings, len(unitTabs)) |
| ) |
| |
| func init() { |
| for _, t := range unitTabs { |
| unitTabLookup[t.Name] = t |
| } |
| } |
| |
| // fetchDetailsForPackage returns tab details by delegating to the correct detail |
| // handler. |
| func fetchDetailsForUnit(ctx context.Context, r *http.Request, tab string, ds internal.DataSource, um *internal.UnitMeta, |
| requestedVersion string, bc internal.BuildContext) (_ interface{}, err error) { |
| defer derrors.Wrap(&err, "fetchDetailsForUnit(r, %q, ds, um=%q,%q,%q)", tab, um.Path, um.ModulePath, um.Version) |
| switch tab { |
| case tabMain: |
| _, expandReadme := r.URL.Query()["readme"] |
| return fetchMainDetails(ctx, ds, um, requestedVersion, expandReadme, bc) |
| case tabVersions: |
| return fetchVersionsDetails(ctx, ds, um) |
| case tabImports: |
| return fetchImportsDetails(ctx, ds, um.Path, um.ModulePath, um.Version) |
| case tabImportedBy: |
| return fetchImportedByDetails(ctx, ds, um.Path, um.ModulePath) |
| case tabLicenses: |
| return fetchLicensesDetails(ctx, ds, um) |
| } |
| return nil, fmt.Errorf("BUG: unable to fetch details: unknown tab %q", tab) |
| } |