[UI] Pull Request Download diff Button (#8470)

* Add Diff Download to Compare List

* Add&Change Text for Diff Options

* move button to seperate template

* add drop down menue with options

* Update: Compare

update Gogs, BitBucket, RhodeCode and remove gitea issue link

Co-Authored-By: Lauris BH <lauris@nix.lv>

* remove last things from TESTing

docs/content/doc/features/comparison.en-us.md

@@ -105,6 +105,7 @@ _Symbols used in table:_
 | Revert specific commits or a merge request | [✘](https://github.com/go-gitea/gitea/issues/5158) | ✘ | ✓ | ✓ | ✓ | ✓ | ✘ |
 | Pull/Merge requests templates | ✓ | ✓ | ✓ | ✓ | ✓ | ✘ | ✘ |
 | Cherry-picking changes | [✘](https://github.com/go-gitea/gitea/issues/5158) | ✘ | ✘ | ✓ | ✓ | ✘ | ✘ |
+| Download Patch | ✓ | ✘ | ✓ | ✓ | ✓ | [/](https://jira.atlassian.com/plugins/servlet/mobile#issue/BCLOUD-8323) | ✘ |
 
 
 #### 3rd-party integrations

options/locale/locale_en-US.ini

@@ -1370,7 +1370,10 @@ diff.parent = parent
 diff.commit = commit
 diff.git-notes = Notes
 diff.data_not_available = Diff Content Not Available
-diff.show_diff_stats = Show Diff Stats
+diff.options_button = Diff Options
+diff.show_diff_stats = Show Stats
+diff.download_patch = Download Patch File
+diff.download_diff = Download Diff File
 diff.show_split_view = Split View
 diff.show_unified_view = Unified View
 diff.whitespace_button = Whitespace

templates/repo/diff/box.tmpl

@@ -7,7 +7,7 @@
 				{{else}}
 					<a class="ui tiny basic toggle button" href="?style={{if .IsSplitStyle}}unified{{else}}split{{end}}">{{ if .IsSplitStyle }}{{.i18n.Tr "repo.diff.show_unified_view"}}{{else}}{{.i18n.Tr "repo.diff.show_split_view"}}{{end}}</a>
 				{{end}}
-				<a class="ui tiny basic toggle button" data-target="#diff-files">{{.i18n.Tr "repo.diff.show_diff_stats"}}</a>
+				{{template "repo/diff/options_dropdown" .}}
 				{{if and .PageIsPullFiles $.SignedUserID (not .IsArchived)}}
 					{{template "repo/diff/new_review" .}}
 				{{end}}
@@ -26,7 +26,7 @@
 				{{else}}
 					<a class="ui tiny basic toggle button" href="?style={{if .IsSplitStyle}}unified{{else}}split{{end}}">{{ if .IsSplitStyle }}{{.i18n.Tr "repo.diff.show_unified_view"}}{{else}}{{.i18n.Tr "repo.diff.show_split_view"}}{{end}}</a>
 				{{end}}
-				<a class="ui tiny basic toggle button" data-target="#diff-files">{{.i18n.Tr "repo.diff.show_diff_stats"}}</a>
+				{{template "repo/diff/options_dropdown" .}}
 				{{if and .PageIsPullFiles $.SignedUserID (not .IsArchived)}}
 					{{template "repo/diff/new_review" .}}
 				{{end}}

templates/repo/diff/options_dropdown.tmpl

@@ -0,0 +1,9 @@
+<div class="ui dropdown tiny button">
+	{{.i18n.Tr "repo.diff.options_button"}}
+	<i class="dropdown icon"></i>
+	<div class="menu">
+		<a class="item tiny basic toggle button" data-target="#diff-files">{{.i18n.Tr "repo.diff.show_diff_stats"}}</a>
+		<a class="item" href="{{$.RepoLink}}/pulls/{{.Issue.Index}}.patch" download="{{.Issue.Index}}.patch">{{.i18n.Tr "repo.diff.download_patch"}}</a>
+		<a class="item" href="{{$.RepoLink}}/pulls/{{.Issue.Index}}.diff" download="{{.Issue.Index}}.diff">{{.i18n.Tr "repo.diff.download_diff"}}</a>
+	</div>
+</div>