ability to hide files based on difftype

filetree/node.go

@@ -10,6 +10,7 @@ type FileNode struct {
 	Parent    *FileNode
 	Name      string
 	Collapsed bool
+	Hidden    bool
 	Data      *FileChangeInfo
 	Children  map[string]*FileNode
 }

filetree/tree.go

@@ -69,6 +69,9 @@ func (tree *FileTree) String() string {
 		sort.Strings(keys)
 		for idx, name := range keys {
 			child := node.Children[name]
+			if child.Hidden {
+				continue
+			}
 			last := idx == (len(node.Children) - 1)
 			showCollapsed := child.Collapsed && len(child.Children) > 0
 			result += renderLine(child.String(), spaces, last, showCollapsed)

ui/filetreeview.go

@@ -1,6 +1,7 @@
 package ui
 
 import (
+	"errors"
 	"fmt"
 
 	"github.com/jroimartin/gocui"
@@ -14,6 +15,7 @@ type FileTreeView struct {
 	TreeIndex       int
 	Tree            *filetree.FileTree
 	RefTrees        []*filetree.FileTree
+	HiddenDiffTypes []bool
 }
 
 func NewFileTreeView(name string, gui *gocui.Gui, tree *filetree.FileTree, refTrees []*filetree.FileTree) (treeview *FileTreeView) {
@@ -24,6 +26,7 @@ func NewFileTreeView(name string, gui *gocui.Gui, tree *filetree.FileTree, refTr
 	treeview.gui = gui
 	treeview.Tree = tree
 	treeview.RefTrees = refTrees
+	treeview.HiddenDiffTypes = make([]bool, 4)
 
 	return treeview
 }
@@ -37,6 +40,7 @@ func (view *FileTreeView) Setup(v *gocui.View) error {
 	view.view.Highlight = true
 	view.view.SelBgColor = gocui.ColorGreen
 	view.view.SelFgColor = gocui.ColorBlack
+	view.view.Frame = true
 
 	// set keybindings
 	if err := view.gui.SetKeybinding(view.Name, gocui.KeyArrowDown, gocui.ModNone, func(*gocui.Gui, *gocui.View) error { return view.CursorDown() }); err != nil {
@@ -48,6 +52,18 @@ func (view *FileTreeView) Setup(v *gocui.View) error {
 	if err := view.gui.SetKeybinding(view.Name, gocui.KeySpace, gocui.ModNone, func(*gocui.Gui, *gocui.View) error { return view.toggleCollapse() }); err != nil {
 		return err
 	}
+	if err := view.gui.SetKeybinding(view.Name, gocui.KeyCtrlA, gocui.ModNone, func(*gocui.Gui, *gocui.View) error { return view.toggleShowDiffType(filetree.Added) }); err != nil {
+		return err
+	}
+	if err := view.gui.SetKeybinding(view.Name, gocui.KeyCtrlR, gocui.ModNone, func(*gocui.Gui, *gocui.View) error { return view.toggleShowDiffType(filetree.Removed) }); err != nil {
+		return err
+	}
+	if err := view.gui.SetKeybinding(view.Name, gocui.KeyCtrlM, gocui.ModNone, func(*gocui.Gui, *gocui.View) error { return view.toggleShowDiffType(filetree.Changed) }); err != nil {
+		return err
+	}
+	if err := view.gui.SetKeybinding(view.Name, gocui.KeyCtrlU, gocui.ModNone, func(*gocui.Gui, *gocui.View) error { return view.toggleShowDiffType(filetree.Unchanged) }); err != nil {
+		return err
+	}
 
 	view.Render()
 
@@ -55,20 +71,25 @@ func (view *FileTreeView) Setup(v *gocui.View) error {
 }
 
 func (view *FileTreeView) setLayer(layerIndex int) error {
+	if layerIndex > len(view.RefTrees)-1 {
+		return errors.New(fmt.Sprintf("Invalid layer index given: %d of %d", layerIndex, len(view.RefTrees)-1))
+	}
 	newTree := filetree.StackRange(view.RefTrees, layerIndex-1)
 	newTree.Compare(view.RefTrees[layerIndex])
 
+	// preserve view state on copy
 	visitor := func(node *filetree.FileNode) error {
-		if node.Collapsed {
 		newNode, err := newTree.GetNode(node.Path())
 		if err == nil {
-				newNode.Collapsed = true
+			newNode.Collapsed = node.Collapsed
-			}
 		}
 		return nil
 	}
 	view.Tree.Visit(visitor)
 
+	// now that the tree has been rebuilt, keep the view seleciton in parity with the previous selection
+	view.setHiddenFromDiffTypes()
+
 	// v, _ := view.gui.View("debug")
 	// v.Clear()
 	// _, _ = fmt.Fprintln(v, view.RefTrees[layerIndex])
@@ -108,7 +129,7 @@ func (view *FileTreeView) getAbsPositionNode() (node *filetree.FileNode) {
 	}
 
 	evaluator = func(curNode *filetree.FileNode) bool {
-		return !curNode.Collapsed
+		return !curNode.Collapsed && !curNode.Hidden
 	}
 
 	err := view.Tree.VisitDepthParentFirst(visiter, evaluator)
@@ -125,6 +146,20 @@ func (view *FileTreeView) toggleCollapse() error {
 	return view.Render()
 }
 
+func (view *FileTreeView) setHiddenFromDiffTypes() error {
+	visitor := func(node *filetree.FileNode) error {
+		node.Hidden = view.HiddenDiffTypes[node.Data.DiffType]
+		return nil
+	}
+	view.Tree.Visit(visitor)
+	return view.Render()
+}
+
+func (view *FileTreeView) toggleShowDiffType(diffType filetree.DiffType) error {
+	view.HiddenDiffTypes[diffType] = !view.HiddenDiffTypes[diffType]
+	return view.setHiddenFromDiffTypes()
+}
+
 func (view *FileTreeView) Render() error {
 	renderString := view.Tree.String()
 	view.gui.Update(func(g *gocui.Gui) error {

ui/layerview.go

@@ -34,6 +34,7 @@ func (view *LayerView) Setup(v *gocui.View) error {
 	view.view.Highlight = true
 	view.view.SelBgColor = gocui.ColorGreen
 	view.view.SelFgColor = gocui.ColorBlack
+	view.view.Frame = false
 
 	// set keybindings
 	if err := view.gui.SetKeybinding(view.Name, gocui.KeyArrowDown, gocui.ModNone, func(*gocui.Gui, *gocui.View) error { return view.CursorDown() }); err != nil {

ui/statusview.go

@@ -0,0 +1,54 @@
+package ui
+
+import (
+	"fmt"
+
+	"github.com/jroimartin/gocui"
+)
+
+type StatusView struct {
+	Name string
+	gui  *gocui.Gui
+	view *gocui.View
+}
+
+func NewStatusView(name string, gui *gocui.Gui) (statusview *StatusView) {
+	statusview = new(StatusView)
+
+	// populate main fields
+	statusview.Name = name
+	statusview.gui = gui
+
+	return statusview
+}
+
+func (view *StatusView) Setup(v *gocui.View) error {
+
+	// set view options
+	view.view = v
+	view.view.Frame = false
+	view.view.BgColor = gocui.ColorDefault + gocui.AttrReverse
+
+	// set keybindings
+	// if err := view.gui.SetKeybinding(view.Name, gocui.KeyArrowDown, gocui.ModNone, func(*gocui.Gui, *gocui.View) error { return view.CursorDown() }); err != nil {
+	// 	return err
+	// }
+	// if err := view.gui.SetKeybinding(view.Name, gocui.KeyArrowUp, gocui.ModNone, func(*gocui.Gui, *gocui.View) error { return view.CursorUp() }); err != nil {
+	// 	return err
+	// }
+
+	view.Render()
+
+	return nil
+}
+
+func (view *StatusView) Render() error {
+	view.gui.Update(func(g *gocui.Gui) error {
+		view.view.Clear()
+		fmt.Fprintln(view.view, "[Ctrl+C]: Quit [Ctrl+Space]: Switch View | [Space]: Toggle dir collapse [A]: Added files [R]: Removed files [M]: Modified files [U]: Unmodified files")
+
+		return nil
+	})
+	// todo: blerg
+	return nil
+}

ui/ui.go

@@ -11,6 +11,14 @@ import (
 var Views struct {
 	Tree   *FileTreeView
 	Layer  *LayerView
+	Status *StatusView
+}
+
+type View interface {
+	Setup(*gocui.View) error
+	CursorDown() error
+	CursorUp() error
+	Render() error
 }
 
 func nextView(g *gocui.Gui, v *gocui.View) error {
@@ -76,16 +84,17 @@ func keybindings(g *gocui.Gui) error {
 
 func layout(g *gocui.Gui) error {
 	maxX, maxY := g.Size()
-	splitCol := maxX / 2
+	splitCols := maxX / 2
-	debugCol := maxX - 0
+	debugCols := maxX - 0
-	if view, err := g.SetView(Views.Layer.Name, -1, -1, splitCol, maxY); err != nil {
+	bottomRows := 1
+	if view, err := g.SetView(Views.Layer.Name, -1, -1, splitCols, maxY-bottomRows); err != nil {
 		if err != gocui.ErrUnknownView {
 			return err
 		}
 		Views.Layer.Setup(view)
 
 	}
-	if view, err := g.SetView(Views.Tree.Name, splitCol, -1, debugCol, maxY); err != nil {
+	if view, err := g.SetView(Views.Tree.Name, splitCols, -1, debugCols, maxY-bottomRows); err != nil {
 		if err != gocui.ErrUnknownView {
 			return err
 		}
@@ -96,7 +105,15 @@ func layout(g *gocui.Gui) error {
 			return err
 		}
 	}
-	// if _, err := g.SetView("debug", debugCol, -1, maxX, maxY); err != nil {
+	if view, err := g.SetView(Views.Status.Name, -1, maxY-bottomRows-1, maxX, maxY); err != nil {
+		if err != gocui.ErrUnknownView {
+			return err
+		}
+		Views.Status.Setup(view)
+
+	}
+
+	// if _, err := g.SetView("debug", debugCol, -1, maxX, maxY-bottomRows); err != nil {
 	// 	if err != gocui.ErrUnknownView {
 	// 		return err
 	// 	}
@@ -115,6 +132,7 @@ func Run(layers []*image.Layer, refTrees []*filetree.FileTree) {
 
 	Views.Layer = NewLayerView("side", g, layers)
 	Views.Tree = NewFileTreeView("main", g, filetree.StackRange(refTrees, 0), refTrees)
+	Views.Status = NewStatusView("status", g)
 
 	g.Cursor = false
 	//g.Mouse = true

ui/view.go

@@ -1,10 +0,0 @@
-package ui
-
-import 	"github.com/jroimartin/gocui"
-
-type View interface {
-	Setup(*gocui.View) error
-	CursorDown() error
-	CursorUp() error
-	Render() error
-}