Hide diff stats on empty PRs (#30629) (#30645)

Backport #30629 by @silverwind

When a PR is empty, e.g. has neither additions nor deletions, we don't
need to show this:

<img width="125" alt="Screenshot 2024-04-21 at 23 25 38"
src="https://github.com/go-gitea/gitea/assets/115237/0b987eb5-66f5-4b9b-b5aa-7e9e267e9b52">

Co-authored-by: silverwind <me@silverwind.io>

diff --git a/templates/repo/pulls/tab_menu.tmpl b/templates/repo/pulls/tab_menu.tmpl
index c0e48928f911870f1a5372bbee27663cf17e5a93..a6d058f1607c3bbab7df7d7dcb4c3e04da654489 100644 (file)
--- a/templates/repo/pulls/tab_menu.tmpl
+++ b/templates/repo/pulls/tab_menu.tmpl
@@ -15,12 +15,14 @@
                        {{ctx.Locale.Tr "repo.pulls.tab_files"}}
                        <span class="ui small label">{{if .NumFiles}}{{.NumFiles}}{{else}}-{{end}}</span>
                </a>
+               {{if or .Diff.TotalAddition .Diff.TotalDeletion}}
                <span class="item tw-ml-auto tw-pr-0 tw-font-bold tw-flex tw-items-center tw-gap-2">
                        <span><span class="text green">{{if .Diff.TotalAddition}}+{{.Diff.TotalAddition}}{{end}}</span> <span class="text red">{{if .Diff.TotalDeletion}}-{{.Diff.TotalDeletion}}{{end}}</span></span>
                        <span class="diff-stats-bar">
                                <div class="diff-stats-add-bar" style="width: {{Eval 100 "*" .Diff.TotalAddition "/" "(" .Diff.TotalAddition "+" .Diff.TotalDeletion "+" 0.0 ")"}}%"></div>
                        </span>
                </span>
+               {{end}}
        </div>
        <div class="ui tabs divider"></div>
 </div>