reverse scrolling on commits implemented

4 files changed, 38 insertions, 1 deletions

diff --git a/README.md b/README.md
index 45d6e51..ba70ce8 100644
--- a/README.md
+++ b/README.md
@@ -78,7 +78,7 @@ run the `gitbatch` command from the parent of your git repositories. For start-u
 - add testing
 - select all feature
 - arrange repositories to an order e.g. alphabetic, last modified, etc.
-- shift keys, i.e. **s** for iterate **shift + s** for reverse iteration
+- shift keys, i.e. **s** for iterate **alt + s** for reverse iteration (partially implemented)
 - recursive repository search from the filesystem
 - full src-d/go-git integration (*having some performance issues*)
 - implement config file to pre-define repo locations or some settings
diff --git a/pkg/git/commit.go b/pkg/git/commit.go
index f51801d..a15b3a4 100644
--- a/pkg/git/commit.go
+++ b/pkg/git/commit.go
@@ -47,6 +47,22 @@ func (entity *RepoEntity) NextCommit() error {
 	return nil
 }
 
+// PreviousCommit iterates to opposite direction
+func (entity *RepoEntity) PreviousCommit() error {
+	currentCommitIndex := 0
+	for i, cs := range entity.Commits {
+		if cs.Hash == entity.Commit.Hash {
+			currentCommitIndex = i
+		}
+	}
+	if currentCommitIndex == 0 {
+		entity.Commit = entity.Commits[len(entity.Commits)-1]
+		return nil
+	}
+	entity.Commit = entity.Commits[currentCommitIndex-1]
+	return nil
+}
+
 // loads the local commits by simply using git log way. ALso, gets the upstream
 // diff commits
 func (entity *RepoEntity) loadCommits() error {
diff --git a/pkg/gui/commitsview.go b/pkg/gui/commitsview.go
index 27abc69..91cb795 100644
--- a/pkg/gui/commitsview.go
+++ b/pkg/gui/commitsview.go
@@ -50,3 +50,16 @@ func (gui *Gui) nextCommit(g *gocui.Gui, v *gocui.View) error {
 	}
 	return err
 }
+
+// reverse iteration handler for the commitsview
+func (gui *Gui) prevCommit(g *gocui.Gui, v *gocui.View) error {
+	var err error
+	entity := gui.getSelectedRepository()
+	if err = entity.PreviousCommit(); err != nil {
+		return err
+	}
+	if err = gui.updateCommits(g, entity); err != nil {
+		return err
+	}
+	return err
+}
diff --git a/pkg/gui/keybindings.go b/pkg/gui/keybindings.go
index df3e4d8..f224bc3 100644
--- a/pkg/gui/keybindings.go
+++ b/pkg/gui/keybindings.go
@@ -109,6 +109,14 @@ func (gui *Gui) generateKeybindings() error {
 			Display:     "s",
 			Description: "Iterate over commits",
 			Vital:       false,
+		},{
+			View:        mainViewFeature.Name,
+			Key:         's',
+			Modifier:    gocui.ModAlt,
+			Handler:     gui.prevCommit,
+			Display:     "alt + s",
+			Description: "Iterate over commits",
+			Vital:       false,
 		}, {
 			View:        mainViewFeature.Name,
 			Key:         'd',