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Improve accessibility when (re-)viewing files (#24817)
Visually, nothing should have changed. Changes include - Convert most `<a [no href]>` to `<button>` when (re-)viewing files: - `<a [no href]>` are, by HTML definition, not a link and hence cannot be focused - `<a class="ui button">` can now be clicked (again?) using <kbd>Enter</kbd> - Previously, the installed keypress handler on `.ui.button` elements disabled it for links somehow - The `(un)escape file`, the `expand section` and the `expand/collapse file` buttons can now be focused (and subsequently clicked using only the keyboard) - You can now press <kbd>Space</kbd> on a focused `View file` checkbox to mark the file as viewed. - previously, this was impossible as this checkbox listened on the wrong event listener The `add code comment` button has been left inaccessible for now as it requires quite a bit of extra logic so that it is unhidden when it is focused (you can otherwise focus it without seeing it as you are not hovering on the corresponding line). --------- Co-authored-by: silverwind <me@silverwind.io>
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17 changed files with 105 additions and 92 deletions
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@ -3,28 +3,30 @@
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<tr class="{{.GetHTMLDiffLineType}}-code nl-{{$k}} ol-{{$k}}">
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{{if eq .GetType 4}}
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<td class="lines-num lines-num-old" data-line-num="{{if $line.LeftIdx}}{{$line.LeftIdx}}{{end}}">
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<div class="gt-df">
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{{if or (eq $line.GetExpandDirection 3) (eq $line.GetExpandDirection 5)}}
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<a role="button" class="blob-excerpt" data-url="{{$.RepoLink}}/blob_excerpt/{{PathEscape $.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=split&direction=down&wiki={{$.PageIsWiki}}" data-anchor="{{$.Anchor}}">
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<button class="code-expander-button" data-url="{{$.RepoLink}}/blob_excerpt/{{PathEscape $.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=split&direction=down&wiki={{$.PageIsWiki}}" data-anchor="{{$.Anchor}}">
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{{svg "octicon-fold-down"}}
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</a>
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</button>
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{{end}}
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{{if or (eq $line.GetExpandDirection 3) (eq $line.GetExpandDirection 4)}}
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<a role="button" class="blob-excerpt" data-url="{{$.RepoLink}}/blob_excerpt/{{PathEscape $.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=split&direction=up&wiki={{$.PageIsWiki}}" data-anchor="{{$.Anchor}}">
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<button class="code-expander-button" data-url="{{$.RepoLink}}/blob_excerpt/{{PathEscape $.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=split&direction=up&wiki={{$.PageIsWiki}}" data-anchor="{{$.Anchor}}">
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{{svg "octicon-fold-up"}}
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</a>
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</button>
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{{end}}
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{{if eq $line.GetExpandDirection 2}}
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<a role="button" class="blob-excerpt" data-url="{{$.RepoLink}}/blob_excerpt/{{PathEscape $.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=split&direction=&wiki={{$.PageIsWiki}}" data-anchor="{{$.Anchor}}">
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<button class="code-expander-button" data-url="{{$.RepoLink}}/blob_excerpt/{{PathEscape $.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=split&direction=&wiki={{$.PageIsWiki}}" data-anchor="{{$.Anchor}}">
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{{svg "octicon-fold"}}
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</a>
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</button>
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{{end}}
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</div>
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</td>
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<td colspan="7" class="lines-code lines-code-old ">{{$inlineDiff := $.section.GetComputedInlineDiffFor $line $.locale}}{{/*
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*/}}{{template "repo/diff/section_code" dict "diff" $inlineDiff "locale" $.locale}}</td>
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{{else}}
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{{$inlineDiff := $.section.GetComputedInlineDiffFor $line $.locale}}
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<td class="lines-num lines-num-old" data-line-num="{{if $line.LeftIdx}}{{$line.LeftIdx}}{{end}}"><span rel="{{if $line.LeftIdx}}diff-{{$.FileNameHash}}L{{$line.LeftIdx}}{{end}}"></span></td>
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<td class="blob-excerpt lines-escape lines-escape-old">{{if and $line.LeftIdx $inlineDiff.EscapeStatus.Escaped}}<a href="" class="toggle-escape-button" title="{{template "repo/diff/escape_title" dict "diff" $inlineDiff "locale" $.locale}}"></a>{{end}}</td>
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<td class="blob-excerpt lines-escape lines-escape-old">{{if and $line.LeftIdx $inlineDiff.EscapeStatus.Escaped}}<button class="toggle-escape-button button button-ghost" title="{{template "repo/diff/escape_title" dict "diff" $inlineDiff "locale" $.locale}}"></button>{{end}}</td>
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<td class="blob-excerpt lines-type-marker lines-type-marker-old">{{if $line.LeftIdx}}<span class="gt-mono" data-type-marker=""></span>{{end}}</td>
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<td class="blob-excerpt lines-code lines-code-old">{{/*
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*/}}{{if $line.LeftIdx}}{{template "repo/diff/section_code" dict "diff" $inlineDiff "locale" $.locale}}{{else}}{{/*
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@ -32,7 +34,7 @@
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*/}}{{end}}{{/*
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*/}}</td>
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<td class="lines-num lines-num-new" data-line-num="{{if $line.RightIdx}}{{$line.RightIdx}}{{end}}"><span rel="{{if $line.RightIdx}}diff-{{$.FileNameHash}}R{{$line.RightIdx}}{{end}}"></span></td>
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<td class="blob-excerpt lines-escape lines-escape-new">{{if and $line.RightIdx $inlineDiff.EscapeStatus.Escaped}}<a href="" class="toggle-escape-button" title="{{template "repo/diff/escape_title" dict "diff" $inlineDiff "locale" $.locale}}"></a>{{end}}</td>
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<td class="blob-excerpt lines-escape lines-escape-new">{{if and $line.RightIdx $inlineDiff.EscapeStatus.Escaped}}<button class="toggle-escape-button button button-ghost" title="{{template "repo/diff/escape_title" dict "diff" $inlineDiff "locale" $.locale}}"></button>{{end}}</td>
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<td class="blob-excerpt lines-type-marker lines-type-marker-new">{{if $line.RightIdx}}<span class="gt-mono" data-type-marker=""></span>{{end}}</td>
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<td class="blob-excerpt lines-code lines-code-new">{{/*
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*/}}{{if $line.RightIdx}}{{template "repo/diff/section_code" dict "diff" $inlineDiff "locale" $.locale}}{{else}}{{/*
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@ -47,28 +49,30 @@
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<tr class="{{.GetHTMLDiffLineType}}-code nl-{{$k}} ol-{{$k}}">
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{{if eq .GetType 4}}
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<td colspan="2" class="lines-num">
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{{if or (eq $line.GetExpandDirection 3) (eq $line.GetExpandDirection 5)}}
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<a role="button" class="blob-excerpt" data-url="{{$.RepoLink}}/blob_excerpt/{{PathEscape $.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=unified&direction=down&wiki={{$.PageIsWiki}}" data-anchor="{{$.Anchor}}">
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{{svg "octicon-fold-down"}}
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</a>
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{{end}}
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{{if or (eq $line.GetExpandDirection 3) (eq $line.GetExpandDirection 4)}}
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<a role="button" class="blob-excerpt" data-url="{{$.RepoLink}}/blob_excerpt/{{PathEscape $.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=unified&direction=up&wiki={{$.PageIsWiki}}" data-anchor="{{$.Anchor}}">
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{{svg "octicon-fold-up"}}
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</a>
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{{end}}
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{{if eq $line.GetExpandDirection 2}}
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<a role="button" class="blob-excerpt" data-url="{{$.RepoLink}}/blob_excerpt/{{PathEscape $.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=unified&direction=&wiki={{$.PageIsWiki}}" data-anchor="{{$.Anchor}}">
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{{svg "octicon-fold"}}
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</a>
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{{end}}
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<div class="gt-df">
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{{if or (eq $line.GetExpandDirection 3) (eq $line.GetExpandDirection 5)}}
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<button class="code-expander-button" data-url="{{$.RepoLink}}/blob_excerpt/{{PathEscape $.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=unified&direction=down&wiki={{$.PageIsWiki}}" data-anchor="{{$.Anchor}}">
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{{svg "octicon-fold-down"}}
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</button>
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{{end}}
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{{if or (eq $line.GetExpandDirection 3) (eq $line.GetExpandDirection 4)}}
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<button class="code-expander-button" data-url="{{$.RepoLink}}/blob_excerpt/{{PathEscape $.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=unified&direction=up&wiki={{$.PageIsWiki}}" data-anchor="{{$.Anchor}}">
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{{svg "octicon-fold-up"}}
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</button>
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{{end}}
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{{if eq $line.GetExpandDirection 2}}
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<button class="code-expander-button" data-url="{{$.RepoLink}}/blob_excerpt/{{PathEscape $.AfterCommitID}}" data-query="{{$line.GetBlobExcerptQuery}}&style=unified&direction=&wiki={{$.PageIsWiki}}" data-anchor="{{$.Anchor}}">
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{{svg "octicon-fold"}}
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</button>
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{{end}}
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</div>
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</td>
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{{else}}
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<td class="lines-num lines-num-old" data-line-num="{{if $line.LeftIdx}}{{$line.LeftIdx}}{{end}}"><span rel="{{if $line.LeftIdx}}diff-{{$.FileNameHash}}L{{$line.LeftIdx}}{{end}}"></span></td>
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<td class="lines-num lines-num-new" data-line-num="{{if $line.RightIdx}}{{$line.RightIdx}}{{end}}"><span rel="{{if $line.RightIdx}}diff-{{$.FileNameHash}}R{{$line.RightIdx}}{{end}}"></span></td>
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{{end}}
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{{$inlineDiff := $.section.GetComputedInlineDiffFor $line $.locale}}
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<td class="blob-excerpt lines-escape">{{if $inlineDiff.EscapeStatus.Escaped}}<a href="" class="toggle-escape-button" title="{{template "repo/diff/escape_title" dict "diff" $inlineDiff "locale" $.locale}}"></a>{{end}}</td>
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<td class="blob-excerpt lines-escape">{{if $inlineDiff.EscapeStatus.Escaped}}<button class="toggle-escape-button button button-ghost" title="{{template "repo/diff/escape_title" dict "diff" $inlineDiff "locale" $.locale}}"></button>{{end}}</td>
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<td class="blob-excerpt lines-type-marker"><span class="gt-mono" data-type-marker="{{$line.GetLineTypeMarker}}"></span></td>
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<td class="blob-excerpt lines-code{{if (not $line.RightIdx)}} lines-code-old{{end}}"><code {{if $inlineDiff.EscapeStatus.Escaped}}class="code-inner has-escaped" title="{{template "repo/diff/escape_title" dict "diff" $inlineDiff "locale" $.locale}}"{{else}}class="code-inner"{{end}}>{{$inlineDiff.Content}}</code></td>
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</tr>
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