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package ui |
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import ( |
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"image/color" |
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"fyne.io/fyne/v2" |
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"fyne.io/fyne/v2/canvas" |
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"fyne.io/fyne/v2/container" |
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"fyne.io/fyne/v2/data/binding" |
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"fyne.io/fyne/v2/driver/desktop" |
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"fyne.io/fyne/v2/layout" |
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"fyne.io/fyne/v2/theme" |
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"fyne.io/fyne/v2/widget" |
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"github.com/rchargel/hdfs-explorer/files" |
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) |
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var sizes [7]float32 = [7]float32{} |
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var _ fyne.Widget = (*fileDirectoryRow)(nil) |
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var _ fyne.Tappable = (*fileDirectoryRow)(nil) |
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var _ fyne.DoubleTappable = (*fileDirectoryRow)(nil) |
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var _ desktop.Hoverable = (*fileDirectoryRow)(nil) |
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type FileDirectoryList struct { |
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container *fyne.Container |
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} |
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func NewFileDirectoryList(data HdfsFileInfoList, openItem func(string)) *FileDirectoryList { |
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list := &FileDirectoryList{ |
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container: container.New(layout.NewVBoxLayout()), |
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} |
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data.AddListener(binding.NewDataListener(func() { |
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infos, _ := data.Get() |
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objects := make([]fyne.CanvasObject, len(infos)) |
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for i, info := range infos { |
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objects[i] = newFileDirectoryRow(info, list.deselectAll, openItem) |
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} |
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list.container.Objects = objects |
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list.container.Refresh() |
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})) |
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return list |
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} |
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func (f *FileDirectoryList) deselectAll(name string) { |
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for _, obj := range f.container.Objects { |
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if obj.(*fileDirectoryRow).info.Name() != name { |
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obj.(*fileDirectoryRow).selected = false |
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obj.Refresh() |
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} |
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} |
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} |
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type fileDirectoryRow struct { |
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widget.BaseWidget |
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info files.HdfsFileInfo |
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child fyne.CanvasObject |
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mode *canvas.Text |
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owner *canvas.Text |
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group *canvas.Text |
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size *canvas.Text |
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block *canvas.Text |
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time *canvas.Text |
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name *canvas.Text |
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selected, hovered bool |
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onTapped func(name string) |
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onDoubleTapped func(name string) |
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} |
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type fileDirectoryRowRenderer struct { |
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objects []fyne.CanvasObject |
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row *fileDirectoryRow |
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} |
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func newFileDirectoryRow(info files.HdfsFileInfo, onTapped, onDoubleTapped func(name string)) *fileDirectoryRow { |
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mode := newText(info.Mode().String(), fyne.TextAlignLeading) |
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owner := newText(info.Owner(), fyne.TextAlignLeading) |
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group := newText(info.OwnerGroup(), fyne.TextAlignLeading) |
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size := newText(files.FormatBytes(uint64(info.Size())), fyne.TextAlignTrailing) |
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block := newText(files.FormatBytes(info.BlockSize()), fyne.TextAlignTrailing) |
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time := newText(info.ModTime().Format("Jan 02 15:04"), fyne.TextAlignLeading) |
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name := newText(info.Name(), fyne.TextAlignLeading) |
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r := &fileDirectoryRow{ |
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BaseWidget: widget.BaseWidget{}, |
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info: info, |
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mode: mode, |
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owner: owner, |
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group: group, |
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size: size, |
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block: block, |
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time: time, |
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name: name, |
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onTapped: onTapped, |
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onDoubleTapped: onDoubleTapped, |
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child: container.New( |
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layout.NewGridLayoutWithColumns(7), |
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mode, owner, group, size, block, time, name, |
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), |
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} |
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r.ExtendBaseWidget(r) |
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return r |
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} |
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func (r *fileDirectoryRow) setStyle(style fyne.TextStyle) { |
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objects := r.child.(*fyne.Container).Objects |
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for _, obj := range objects { |
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obj.(*canvas.Text).TextStyle = style |
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} |
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} |
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func (r *fileDirectoryRow) setColor(color color.Color) { |
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objects := r.child.(*fyne.Container).Objects |
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for _, obj := range objects { |
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obj.(*canvas.Text).Color = color |
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} |
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} |
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func (r *fileDirectoryRow) MinSize() fyne.Size { |
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r.ExtendBaseWidget(r) |
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return r.BaseWidget.MinSize() |
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} |
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func (r *fileDirectoryRow) Tapped(*fyne.PointEvent) { |
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r.selected = !r.selected |
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r.onTapped(r.info.Name()) |
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r.Refresh() |
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} |
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func (r *fileDirectoryRow) DoubleTapped(*fyne.PointEvent) { |
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r.onDoubleTapped(r.info.Name()) |
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} |
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func (r *fileDirectoryRow) MouseIn(*desktop.MouseEvent) { |
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r.hovered = true |
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r.Refresh() |
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} |
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func (r *fileDirectoryRow) MouseOut() { |
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r.hovered = false |
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r.Refresh() |
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} |
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func (r *fileDirectoryRow) MouseMoved(*desktop.MouseEvent) {} |
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func newText(text string, alignment fyne.TextAlign) *canvas.Text { |
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return &canvas.Text{ |
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Text: text, |
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Alignment: alignment, |
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Color: theme.ForegroundColor(), |
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TextStyle: fyne.TextStyle{Monospace: true}, |
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TextSize: fyne.CurrentApp().Settings().Theme().Size("text") * float32(0.9), |
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} |
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} |
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func (r *fileDirectoryRow) CreateRenderer() fyne.WidgetRenderer { |
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r.ExtendBaseWidget(r) |
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objects := []fyne.CanvasObject{r.child} |
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return &fileDirectoryRowRenderer{objects, r} |
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} |
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func (r *fileDirectoryRowRenderer) Destroy() { |
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// nothing done here |
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} |
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func (r *fileDirectoryRowRenderer) Objects() []fyne.CanvasObject { |
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return r.objects |
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} |
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func (r *fileDirectoryRowRenderer) SetObjects(objects []fyne.CanvasObject) { |
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r.objects = objects |
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} |
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func (r *fileDirectoryRowRenderer) MinSize() fyne.Size { |
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objects := r.row.child.(*fyne.Container).Objects |
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height := r.row.child.MinSize().Height |
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for i, o := range objects { |
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sizes[i] = max(sizes[i], o.MinSize().Width) |
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} |
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return fyne.NewSize(minWidth(), height+theme.Padding()*2) |
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} |
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func (r *fileDirectoryRowRenderer) Layout(size fyne.Size) { |
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r.row.child.Move(fyne.NewPos(theme.Padding(), theme.Padding())) |
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r.row.child.Resize(fyne.NewSize(size.Width+theme.Padding()*2, size.Height+theme.Padding()*2)) |
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x := theme.Padding() |
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for i, obj := range r.row.child.(*fyne.Container).Objects { |
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width := sizes[i] |
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obj.Resize(fyne.NewSize(width, obj.MinSize().Height)) |
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obj.Move(fyne.NewPos(x, theme.Padding())) |
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x += width + theme.Padding() |
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} |
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} |
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func (r *fileDirectoryRowRenderer) Refresh() { |
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if r.row.hovered { |
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r.row.setColor(theme.PrimaryColor()) |
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} else { |
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r.row.setColor(theme.ForegroundColor()) |
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} |
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canvas.Refresh(r.row) |
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} |
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func minWidth() float32 { |
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width := float32(0) |
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for _, w := range sizes { |
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width += w + theme.Padding()*2 |
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} |
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return width |
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} |
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func max(a, b float32) float32 { |
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if a > b { |
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return a |
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} |
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return b |
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} |
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rchargel /
hdfs-explorer
