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lazygit/pkg/gui/filetree/file_tree_view_model.go

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package filetree
import (
"fmt"
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"sync"
"github.com/jesseduffield/lazygit/pkg/commands/models"
"github.com/sirupsen/logrus"
)
type FileTreeDisplayFilter int
const (
DisplayAll FileTreeDisplayFilter = iota
DisplayStaged
DisplayUnstaged
// this shows files with merge conflicts
DisplayConflicted
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)
type FileTreeViewModel struct {
files []*models.File
tree *FileNode
showTree bool
log *logrus.Entry
filter FileTreeDisplayFilter
collapsedPaths CollapsedPaths
sync.RWMutex
}
func NewFileTreeViewModel(files []*models.File, log *logrus.Entry, showTree bool) *FileTreeViewModel {
viewModel := &FileTreeViewModel{
log: log,
showTree: showTree,
filter: DisplayAll,
collapsedPaths: CollapsedPaths{},
RWMutex: sync.RWMutex{},
}
viewModel.SetFiles(files)
return viewModel
}
func (self *FileTreeViewModel) InTreeMode() bool {
return self.showTree
}
func (self *FileTreeViewModel) ExpandToPath(path string) {
self.collapsedPaths.ExpandToPath(path)
}
func (self *FileTreeViewModel) GetFilesForDisplay() []*models.File {
files := self.files
switch self.filter {
case DisplayAll:
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return files
case DisplayStaged:
return self.FilterFiles(func(file *models.File) bool { return file.HasStagedChanges })
case DisplayUnstaged:
return self.FilterFiles(func(file *models.File) bool { return file.HasUnstagedChanges })
case DisplayConflicted:
return self.FilterFiles(func(file *models.File) bool { return file.HasMergeConflicts })
default:
panic(fmt.Sprintf("Unexpected files display filter: %d", self.filter))
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}
}
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func (self *FileTreeViewModel) FilterFiles(test func(*models.File) bool) []*models.File {
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result := make([]*models.File, 0)
for _, file := range self.files {
if test(file) {
result = append(result, file)
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}
}
return result
}
func (self *FileTreeViewModel) SetFilter(filter FileTreeDisplayFilter) {
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self.filter = filter
self.SetTree()
}
func (self *FileTreeViewModel) ToggleShowTree() {
self.showTree = !self.showTree
self.SetTree()
}
func (self *FileTreeViewModel) GetItemAtIndex(index int) *FileNode {
// need to traverse the three depth first until we get to the index.
return self.tree.GetNodeAtIndex(index+1, self.collapsedPaths) // ignoring root
}
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func (self *FileTreeViewModel) GetFile(path string) *models.File {
for _, file := range self.files {
if file.Name == path {
return file
}
}
return nil
}
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func (self *FileTreeViewModel) GetIndexForPath(path string) (int, bool) {
index, found := self.tree.GetIndexForPath(path, self.collapsedPaths)
return index - 1, found
}
func (self *FileTreeViewModel) GetAllItems() []*FileNode {
if self.tree == nil {
return nil
}
return self.tree.Flatten(self.collapsedPaths)[1:] // ignoring root
}
func (self *FileTreeViewModel) GetItemsLength() int {
return self.tree.Size(self.collapsedPaths) - 1 // ignoring root
}
func (self *FileTreeViewModel) GetAllFiles() []*models.File {
return self.files
}
func (self *FileTreeViewModel) SetFiles(files []*models.File) {
self.files = files
self.SetTree()
}
func (self *FileTreeViewModel) SetTree() {
filesForDisplay := self.GetFilesForDisplay()
if self.showTree {
self.tree = BuildTreeFromFiles(filesForDisplay)
} else {
self.tree = BuildFlatTreeFromFiles(filesForDisplay)
}
}
func (self *FileTreeViewModel) IsCollapsed(path string) bool {
return self.collapsedPaths.IsCollapsed(path)
}
func (self *FileTreeViewModel) ToggleCollapsed(path string) {
self.collapsedPaths.ToggleCollapsed(path)
}
func (self *FileTreeViewModel) Tree() INode {
return self.tree
}
func (self *FileTreeViewModel) CollapsedPaths() CollapsedPaths {
return self.collapsedPaths
}
func (self *FileTreeViewModel) GetFilter() FileTreeDisplayFilter {
return self.filter
}