Link to previous blames in file blame page

options/locale/locale_en-US.ini

@@ -801,6 +801,7 @@ delete_preexisting_label = Delete
 delete_preexisting = Delete pre-existing files
 delete_preexisting_content = Delete files in %s
 delete_preexisting_success = Deleted unadopted files in %s
+blame_prior = View blame prior to this change
 
 transfer.accept = Accept Transfer
 transfer.accept_desc =  Transfer to "%s"

routers/web/repo/blame.go

@@ -5,7 +5,6 @@
 package repo
 
 import (
-	"bytes"
 	"container/list"
 	"fmt"
 	"html"
@@ -27,6 +26,20 @@ const (
 	tplBlame base.TplName = "repo/home"
 )
 
+type blameRow struct {
+	RowNumber      int
+	Avatar         gotemplate.HTML
+	RepoLink       string
+	PartSha        string
+	PreviousSha    string
+	PreviousShaURL string
+	IsFirstCommit  bool
+	CommitURL      string
+	CommitMessage  string
+	CommitSince    gotemplate.HTML
+	Code           gotemplate.HTML
+}
+
 // RefBlame render blame page
 func RefBlame(ctx *context.Context) {
 	fileName := ctx.Repo.TreePath
@@ -146,6 +159,7 @@ func RefBlame(ctx *context.Context) {
 	}
 
 	commitNames := make(map[string]models.UserCommit)
+	previousCommits := make(map[string]string)
 	commits := list.New()
 
 	for _, part := range blameParts {
@@ -164,6 +178,17 @@ func RefBlame(ctx *context.Context) {
 			return
 		}
 
+		// Get previous closest commit sha from the commit
+		previousCommit, err := commit.Parent(0)
+		if err == nil {
+			// Verify the commit
+			if haz, _ := commit.HasPreviousCommit(previousCommit.ID); haz {
+				if haz1, _ := previousCommit.HasFile(ctx.Repo.TreePath); haz1 {
+					previousCommits[commit.ID.String()] = previousCommit.ID.String()
+				}
+			}
+		}
+
 		commits.PushBack(commit)
 
 		commitNames[commit.ID.String()] = models.UserCommit{}
@@ -183,32 +208,34 @@ func RefBlame(ctx *context.Context) {
 		return
 	}
 
-	renderBlame(ctx, blameParts, commitNames)
+	renderBlame(ctx, blameParts, commitNames, previousCommits)
 
 	ctx.HTML(http.StatusOK, tplBlame)
 }
 
-func renderBlame(ctx *context.Context, blameParts []git.BlamePart, commitNames map[string]models.UserCommit) {
+func renderBlame(ctx *context.Context, blameParts []git.BlamePart, commitNames map[string]models.UserCommit, previousCommits map[string]string) {
 	repoLink := ctx.Repo.RepoLink
 
 	var lines = make([]string, 0)
-
-	var commitInfo bytes.Buffer
-	var lineNumbers bytes.Buffer
-	var codeLines bytes.Buffer
+	rows := make([]*blameRow, 0)
 
 	var i = 0
-	for pi, part := range blameParts {
+	var commitCnt = 0
+	for _, part := range blameParts {
 		for index, line := range part.Lines {
 			i++
 			lines = append(lines, line)
 
-			var attr = ""
-			if len(part.Lines)-1 == index && len(blameParts)-1 != pi {
-				attr = " bottom-line"
+			br := &blameRow{
+				RowNumber: i,
 			}
+
 			commit := commitNames[part.Sha]
+			previousSha := previousCommits[part.Sha]
 			if index == 0 {
+				// Count commit number
+				commitCnt++
+
 				// User avatar image
 				commitSince := timeutil.TimeSinceUnix(timeutil.TimeStamp(commit.Author.When.Unix()), ctx.Data["Lang"].(string))
 
@@ -219,33 +246,27 @@ func renderBlame(ctx *context.Context, blameParts []git.BlamePart, commitNames m
 					avatar = string(templates.AvatarByEmail(commit.Author.Email, commit.Author.Name, 18, "mr-3"))
 				}
 
-				commitInfo.WriteString(fmt.Sprintf(`<div class="blame-info%s"><div class="blame-data"><div class="blame-avatar">%s</div><div class="blame-message"><a href="%s/commit/%s" title="%[5]s">%[5]s</a></div><div class="blame-time">%s</div></div></div>`, attr, avatar, repoLink, part.Sha, html.EscapeString(commit.CommitMessage), commitSince))
-			} else {
-				commitInfo.WriteString(fmt.Sprintf(`<div class="blame-info%s">&#8203;</div>`, attr))
-			}
-
-			//Line number
-			if len(part.Lines)-1 == index && len(blameParts)-1 != pi {
-				lineNumbers.WriteString(fmt.Sprintf(`<span id="L%d" data-line-number="%d" class="bottom-line"></span>`, i, i))
-			} else {
-				lineNumbers.WriteString(fmt.Sprintf(`<span id="L%d" data-line-number="%d"></span>`, i, i))
+				br.Avatar = gotemplate.HTML(avatar)
+				br.RepoLink = repoLink
+				br.PartSha = part.Sha
+				br.PreviousSha = previousSha
+				br.PreviousShaURL = fmt.Sprintf("%s/blame/commit/%s/%s", repoLink, previousSha, ctx.Repo.TreePath)
+				br.CommitURL = fmt.Sprintf("%s/commit/%s", repoLink, part.Sha)
+				br.CommitMessage = html.EscapeString(commit.CommitMessage)
+				br.CommitSince = commitSince
 			}
 
 			if i != len(lines)-1 {
 				line += "\n"
 			}
 			fileName := fmt.Sprintf("%v", ctx.Data["FileName"])
 			line = highlight.Code(fileName, line)
-			line = `<code class="code-inner">` + line + `</code>`
-			if len(part.Lines)-1 == index && len(blameParts)-1 != pi {
-				codeLines.WriteString(fmt.Sprintf(`<li class="L%d bottom-line" rel="L%d">%s</li>`, i, i, line))
-			} else {
-				codeLines.WriteString(fmt.Sprintf(`<li class="L%d" rel="L%d">%s</li>`, i, i, line))
-			}
+
+			br.Code = gotemplate.HTML(line)
+			rows = append(rows, br)
 		}
 	}
 
-	ctx.Data["BlameContent"] = gotemplate.HTML(codeLines.String())
-	ctx.Data["BlameCommitInfo"] = gotemplate.HTML(commitInfo.String())
-	ctx.Data["BlameLineNums"] = gotemplate.HTML(lineNumbers.String())
+	ctx.Data["BlameRows"] = rows
+	ctx.Data["CommitCnt"] = commitCnt
 }

templates/repo/blame.tmpl

@@ -23,11 +23,40 @@
 		<div class="file-view code-view">
 			<table>
 				<tbody>
-					<tr>
-						<td class="lines-commit">{{.BlameCommitInfo}}</td>
-						<td class="lines-num">{{.BlameLineNums}}</td>
-						<td class="lines-code"><code class="chroma"><ol class="linenums">{{.BlameContent}}</ol></code></td>
-					</tr>
+					{{range $row := .BlameRows}}
+						<tr class="{{if and (gt $.CommitCnt 1) ($row.CommitMessage)}}bottom-line-blame{{end}}">
+							<td class="lines-commit">
+								<div class="blame-info">
+									<div class="blame-data">
+										<div class="blame-avatar">
+											{{$row.Avatar}}
+										</div>
+										<div class="blame-message">
+											<a href="{{$row.CommitURL}}" title="{{$row.CommitMessage}}">
+												{{$row.CommitMessage}}
+											</a>
+										</div>
+										<div class="blame-time">
+											{{$row.CommitSince}}
+										</div>
+									</div>
+								</div>
+							</td>
+							<td class="lines-blame-btn">
+								{{if $row.PreviousSha}}
+									<a href="{{$row.PreviousShaURL}}" class="poping up" data-content='{{$.i18n.Tr "repo.blame_prior"}}' data-variation="tiny inverted">
+										{{svg "octicon-versions"}}
+									</a>
+								{{end}}
+							</td>
+							<td class="lines-num">
+								<span id="L{{$row.RowNumber}}" data-line-number="{{$row.RowNumber}}"></span>
+							</td>
+							<td rel="L{{$row.RowNumber}}" rel="L{{$row.RowNumber}}" class="lines-code blame-code chroma">
+								<code class="code-inner pl-3">{{$row.Code}}</code>
+							</td>
+						</tr>
+					{{end}}
 				</tbody>
 			</table>
 		</div>

web_src/js/index.js

@@ -2261,36 +2261,50 @@ function initCodeView() {
       const $select = $(this);
       let $list;
       if ($('div.blame').length) {
-        $list = $('.code-view td.lines-code li');
+        $list = $('.code-view td.lines-code.blame-code');
       } else {
         $list = $('.code-view td.lines-code');
       }
       selectRange($list, $list.filter(`[rel=${$select.attr('id')}]`), (e.shiftKey ? $list.filter('.active').eq(0) : null));
       deSelect();
-      showLineButton();
+
+      // show code view menu marker (don't show in blame page)
+      if ($('div.blame').length === 0) {
+        showLineButton();
+      }
     });
 
     $(window).on('hashchange', () => {
       let m = window.location.hash.match(/^#(L\d+)-(L\d+)$/);
       let $list;
       if ($('div.blame').length) {
-        $list = $('.code-view td.lines-code li');
+        $list = $('.code-view td.lines-code.blame-code');
       } else {
         $list = $('.code-view td.lines-code');
       }
       let $first;
       if (m) {
         $first = $list.filter(`[rel=${m[1]}]`);
         selectRange($list, $first, $list.filter(`[rel=${m[2]}]`));
-        showLineButton();
+
+        // show code view menu marker (don't show in blame page)
+        if ($('div.blame').length === 0) {
+          showLineButton();
+        }
+
         $('html, body').scrollTop($first.offset().top - 200);
         return;
       }
       m = window.location.hash.match(/^#(L|n)(\d+)$/);
       if (m) {
         $first = $list.filter(`[rel=L${m[2]}]`);
         selectRange($list, $first);
-        showLineButton();
+
+        // show code view menu marker (don't show in blame page)
+        if ($('div.blame').length === 0) {
+          showLineButton();
+        }
+
         $('html, body').scrollTop($first.offset().top - 200);
       }
     }).trigger('hashchange');
@@ -2889,7 +2903,6 @@ function selectRange($list, $select, $from) {
       } else {
         $issue.attr('href', `${$issue.attr('href')}%23L${a}-L${b}`);
       }
-
       return;
     }
   }

web_src/less/_base.less

@@ -106,6 +106,7 @@
   --color-markup-code-block: #00000010;
   --color-button: #ffffff;
   --color-code-bg: #ffffff;
+  --color-code-sidebar-bg: #f5f5f5;
   --color-shadow: #00000030;
   --color-secondary-bg: #f4f4f4;
   --color-expand-button: #d8efff;
@@ -1442,6 +1443,14 @@ a.ui.label:hover {
   margin-right: 0;
 }
 
+.lines-blame-btn {
+  padding-left: 10px;
+  padding-right: 10px;
+  text-align: right !important;
+  background-color: var(--color-code-sidebar-bg);
+  width: 2%;
+}
+
 .lines-num {
   padding-left: 10px;
   padding-right: 10px;
@@ -1507,7 +1516,7 @@ a.ui.label:hover {
 
 .blame .lines-num {
   padding: 0 !important;
-  background-color: #f5f5f5;
+  background-color: var(--color-code-sidebar-bg);
 }
 
 .blame .lines-code {
@@ -1532,7 +1541,7 @@ a.ui.label:hover {
   vertical-align: top;
   color: #999999;
   padding: 0 !important;
-  background: #f5f5f5;
+  background: var(--color-code-sidebar-bg);
   width: 1%;
   -moz-user-select: none;
   -ms-user-select: none;
@@ -1574,6 +1583,10 @@ a.ui.label:hover {
   }
 }
 
+.bottom-line-blame {
+  border-bottom: 1px solid var(--color-secondary);
+}
+
 .lines-code,
 .lines-commit {
   .bottom-line {

web_src/less/themes/theme-arc-green.less

@@ -101,6 +101,7 @@
   --color-markup-code-block: #292d39;
   --color-button: #353846;
   --color-code-bg: #2a2e3a;
+  --color-code-sidebar-bg: #2e323e;
   --color-shadow: #00000060;
   --color-secondary-bg: #2a2e3a;
   --color-text-focus: #fff;
@@ -430,11 +431,6 @@ td.blob-hunk {
   background-color: #bbbbbb !important;
 }
 
-.lines-commit,
-.blame .lines-num {
-  background: #2e323e !important;
-}
-
 .lines-num {
   color: var(--color-secondary-dark-6) !important;
   border-color: var(--color-secondary) !important;