Web editor: improve edit file tooltip

conf/locale/locale_en-US.ini

 default_commit_message = Add an optional extended description...
 last_commit_info = %s edited this file %s
 delete_this_file = Delete this file
-edit_this_file = Edit this file
 edit_file = Edit file
 delete_confirm_message = Are you sure you want to delete this file?
 delete_commit_message = Write a note about this delete (optional)
 unable_to_update_file = Unable to update this file, error occurred
-must_be_on_branch = You must be on a branch to make or propose changes to this file
 must_be_writer = You must have write access to make or propose changes to this file
-cannot_edit_binary_files = Cannot edit binary files
 filename_help = To add directory, just type it and press /. To remove a directory, go to the beginning of the field and press backspace.
-fork_before_edit = You must fork this before editing
 new_branch = new branch
+editor.cannot_edit_non_text_files = Cannot edit non-text files
+editor.edit_this_file = Edit this file
+editor.must_be_on_a_branch = You must be on a branch to make or propose changes to this file
+editor.fork_before_edit = You must fork this repository before editing the file
 editor.file_delete_success = File '%s' has been deleted successfully!
 editor.commit_directly_to_this_branch = Commit directly to the <strong class="branch-name">%s</strong> branch.
 editor.create_new_branch = Create a <strong>new branch</strong> for this commit and start a pull request.

routers/repo/view.go

 	"github.com/gogits/gogs/modules/setting"
 	"github.com/gogits/gogs/modules/template"
 	"github.com/gogits/gogs/modules/template/highlight"
-	"strconv"
 )
 
 const (
 	userName := ctx.Repo.Owner.Name
 	repoName := ctx.Repo.Repository.Name
 
-	repoLink := ctx.Repo.RepoLink
 	branchLink := ctx.Repo.RepoLink + "/src/" + branchName
 	treeLink := branchLink
 	rawLink := ctx.Repo.RepoLink + "/raw/" + branchName
-	editLink := ctx.Repo.RepoLink + "/_edit/" + branchName
-	newFileLink := ctx.Repo.RepoLink + "/_new/" + branchName
-	forkLink := setting.AppSubUrl + "/repo/fork/" + strconv.FormatInt(ctx.Repo.Repository.ID, 10)
-	uploadFileLink := ctx.Repo.RepoLink + "/upload/" + branchName
+	// newFileLink := ctx.Repo.RepoLink + "/_new/" + branchName
+	// uploadFileLink := ctx.Repo.RepoLink + "/upload/" + branchName
 
-	// Get tree path
-	treename := ctx.Repo.TreePath
-
-	if len(treename) > 0 {
-		if treename[len(treename)-1] == '/' {
-			ctx.Redirect(repoLink + "/src/" + branchName + "/" + treename[:len(treename)-1])
-			return
-		}
-
-		treeLink += "/" + treename
-	}
-
-	treePath := treename
-	if len(treePath) != 0 {
-		treePath = treePath + "/"
+	treePath := ctx.Repo.TreePath
+	if len(treePath) > 0 {
+		treeLink += "/" + treePath
 	}
 
-	entry, err := ctx.Repo.Commit.GetTreeEntryByPath(treename)
+	entry, err := ctx.Repo.Commit.GetTreeEntryByPath(treePath)
 	if err != nil {
 		if git.IsErrNotExist(err) {
 			ctx.Handle(404, "GetTreeEntryByPath", err)
 		ctx.Data["IsFile"] = true
 		ctx.Data["FileName"] = blob.Name()
 		ctx.Data["HighlightClass"] = highlight.FileNameToHighlightClass(blob.Name())
-		ctx.Data["FileLink"] = rawLink + "/" + treename
+		ctx.Data["FileLink"] = rawLink + "/" + treePath
 
 		buf := make([]byte, 1024)
 		n, _ := dataRc.Read(buf)
 		_, isPDFFile := base.IsPDFFile(buf)
 		ctx.Data["IsFileText"] = isTextFile
 
+		// Assume file is not editable first.
+		if !isTextFile {
+			ctx.Data["EditFileTooltip"] = ctx.Tr("repo.editor.cannot_edit_non_text_files")
+		}
+
 		switch {
 		case isPDFFile:
 			ctx.Data["IsPDFFile"] = true
-			ctx.Data["FileEditLinkTooltip"] = ctx.Tr("repo.cannot_edit_binary_files")
 		case isImageFile:
 			ctx.Data["IsImageFile"] = true
-			ctx.Data["FileEditLinkTooltip"] = ctx.Tr("repo.cannot_edit_binary_files")
 		case isTextFile:
 			if blob.Size() >= setting.UI.MaxDisplayFileSize {
 				ctx.Data["IsFileTooLarge"] = true
 			} else {
-				ctx.Data["IsFileTooLarge"] = false
 				d, _ := ioutil.ReadAll(dataRc)
 				buf = append(buf, d...)
-				readmeExist := markdown.IsMarkdownFile(blob.Name()) || markdown.IsReadmeFile(blob.Name())
-				isMarkdown := readmeExist || markdown.IsMarkdownFile(blob.Name())
-				ctx.Data["ReadmeExist"] = readmeExist
+
+				isMarkdown := markdown.IsMarkdownFile(blob.Name())
 				ctx.Data["IsMarkdown"] = isMarkdown
-				if isMarkdown {
+
+				readmeExist := isMarkdown || markdown.IsReadmeFile(blob.Name())
+				ctx.Data["ReadmeExist"] = readmeExist
+				if readmeExist {
+					// TODO: don't need to render if it's a README but not Markdown file.
 					ctx.Data["FileContent"] = string(markdown.Render(buf, path.Dir(treeLink), ctx.Repo.Repository.ComposeMetas()))
 				} else {
 					// Building code view blocks with line number on server side.
 					ctx.Data["LineNums"] = gotemplate.HTML(output.String())
 				}
 			}
+
 			if ctx.Repo.IsWriter() && ctx.Repo.IsViewBranch {
-				ctx.Data["FileEditLink"] = editLink + "/" + treename
-				ctx.Data["FileEditLinkTooltip"] = ctx.Tr("repo.edit_this_file")
-			} else {
-				if !ctx.Repo.IsViewBranch {
-					ctx.Data["FileEditLinkTooltip"] = ctx.Tr("repo.must_be_on_branch")
-				} else if !ctx.Repo.IsWriter() {
-					ctx.Data["FileEditLink"] = forkLink
-					ctx.Data["FileEditLinkTooltip"] = ctx.Tr("repo.fork_before_edit")
-				}
+				ctx.Data["CanEditFile"] = true
+				ctx.Data["EditFileTooltip"] = ctx.Tr("repo.editor.edit_this_file")
+			} else if !ctx.Repo.IsViewBranch {
+				ctx.Data["EditFileTooltip"] = ctx.Tr("repo.editor.must_be_on_a_branch")
+			} else if !ctx.Repo.IsWriter() {
+				ctx.Data["EditFileTooltip"] = ctx.Tr("repo.editor.fork_before_edit")
 			}
-		default:
-			ctx.Data["FileEditLinkTooltip"] = ctx.Tr("repo.cannot_edit_binary_files")
 		}
 
 		if ctx.Repo.IsWriter() && ctx.Repo.IsViewBranch {
+			ctx.Data["CanDeleteFile"] = true
 			ctx.Data["FileDeleteLinkTooltip"] = ctx.Tr("repo.delete_this_file")
 		} else {
 			if !ctx.Repo.IsViewBranch {
 
 	} else {
 		// Directory and file list.
-		tree, err := ctx.Repo.Commit.SubTree(treename)
+		tree, err := ctx.Repo.Commit.SubTree(treePath)
 		if err != nil {
 			ctx.Handle(404, "SubTree", err)
 			return
 				}
 
 				ctx.Data["FileSize"] = readmeFile.Size()
-				ctx.Data["FileLink"] = rawLink + "/" + treename
+				ctx.Data["FileLink"] = rawLink + "/" + treePath
 				_, isTextFile := base.IsTextFile(buf)
 				ctx.Data["FileIsText"] = isTextFile
 				ctx.Data["FileName"] = readmeFile.Name()
 		}
 		ctx.Data["LastCommit"] = lastCommit
 		ctx.Data["LastCommitUser"] = models.ValidateCommitWithEmail(lastCommit)
-		if ctx.Repo.IsWriter() && ctx.Repo.IsViewBranch {
-			ctx.Data["NewFileLink"] = newFileLink + "/" + treename
-			if setting.Repository.Upload.Enabled {
-				ctx.Data["UploadFileLink"] = uploadFileLink + "/" + treename
-			}
-		}
+		// if ctx.Repo.IsWriter() && ctx.Repo.IsViewBranch {
+		// 	ctx.Data["NewFileLink"] = newFileLink + "/" + treePath
+		// 	if setting.Repository.Upload.Enabled {
+		// 		ctx.Data["UploadFileLink"] = uploadFileLink + "/" + treePath
+		// 	}
+		// }
 	}
 
 	ctx.Data["Username"] = userName
 	var treenames []string
 	paths := make([]string, 0)
 
-	if len(treename) > 0 {
-		treenames = strings.Split(treename, "/")
+	if len(treePath) > 0 {
+		treenames = strings.Split(treePath, "/")
 		for i := range treenames {
 			paths = append(paths, strings.Join(treenames[0:i+1], "/"))
 		}
 	}
 
 	ctx.Data["Paths"] = paths
-	ctx.Data["TreeName"] = treename
-	ctx.Data["Treenames"] = treenames
 	ctx.Data["TreePath"] = treePath
+	ctx.Data["TreeLink"] = treeLink
+	ctx.Data["Treenames"] = treenames
 	ctx.Data["BranchLink"] = branchLink
 	ctx.HTML(200, HOME)
 }

templates/repo/view_file.tmpl

 			<div class="ui right file-actions">
 				<div class="ui buttons">
 					{{if not .IsViewCommit}}
-						<a class="ui button" href="{{.RepoLink}}/src/{{.CommitID}}/{{EscapePound .TreeName}}">{{.i18n.Tr "repo.file_permalink"}}</a>
+						<a class="ui button" href="{{.RepoLink}}/src/{{.CommitID}}/{{EscapePound .TreePath}}">{{.i18n.Tr "repo.file_permalink"}}</a>
 					{{end}}
-					<a class="ui button" href="{{.RepoLink}}/commits/{{EscapePound .BranchName}}/{{EscapePound .TreeName}}">{{.i18n.Tr "repo.file_history"}}</a>
+					<a class="ui button" href="{{.RepoLink}}/commits/{{EscapePound .BranchName}}/{{EscapePound .TreePath}}">{{.i18n.Tr "repo.file_history"}}</a>
 					<a class="ui button" href="{{EscapePound .FileLink}}">{{.i18n.Tr "repo.file_raw"}}</a>
 				</div>
-				{{if .FileEditLink}}
-					<a href="{{EscapePound $.FileEditLink}}"><i class="poping up octicon octicon-pencil btn-octicon"  data-content="{{.FileEditLinkTooltip}}" data-position="bottom center" data-variation="tiny inverted"></i></a>
+				{{if .CanEditFile}}
+					<a href="{{.RepoLink}}/_edit/{{EscapePound .BranchName}}/{{EscapePound .TreePath}}"><i class="poping up octicon octicon-pencil btn-octicon"  data-content="{{.EditFileTooltip}}" data-position="bottom center" data-variation="tiny inverted"></i></a>
 				{{else}}
-					<i class="octicon btn-octicon octicon-pencil poping up disabled" data-content="{{.FileEditLinkTooltip}}" data-position="bottom center" data-variation="tiny inverted"></i>
+					<i class="octicon btn-octicon octicon-pencil poping up disabled" data-content="{{.EditFileTooltip}}" data-position="bottom center" data-variation="tiny inverted"></i>
 				{{end}}
-				{{if and .IsViewBranch .IsRepositoryWriter}}
-					<form id="delete-file-form" class="ui form inline-form" action="{{.RepoLink}}/_delete/{{EscapePound .BranchName}}/{{.TreeName}}" method="post">
+				{{if .CanDeleteFile}}
+					<form id="delete-file-form" class="ui form inline-form" action="{{.RepoLink}}/_delete/{{EscapePound .BranchName}}/{{.TreePath}}" method="post">
 						{{.CsrfTokenHtml}}
 						<button onclick="submitDeleteForm()" class="octicon octicon-trashcan btn-octicon btn-octicon-danger poping up" type="button" data-content="{{.FileDeleteLinkTooltip}}" data-position="bottom center" data-variation="tiny inverted"></button>
 						<input type="hidden" id="delete-message" name="commit_message" value="">

templates/repo/view_list.tmpl

 				{{else}}
 					<td class="name">
 						<span class="octicon octicon-file-{{if or $entry.IsDir}}directory{{else}}text{{end}}"></span>
-						<a href="{{EscapePound $.BranchLink}}/{{EscapePound $.TreePath}}{{EscapePound $entry.Name}}">{{$entry.Name}}</a>
+						<a href="{{EscapePound $.TreeLink}}/{{EscapePound $entry.Name}}">{{$entry.Name}}</a>
 					</td>
 				{{end}}
 				<td class="message collapsing has-emoji">