Files
8bitMyGoUI/files/archiveviewer.go
T
ZacharyZhang-NY 552b073e81 Add files components 406-420; Tree opens to a known choice
Fifteen file components: FileExplorer, FileGrid, FileIcon, PathBar,
MemoryCard, DiskUsage, UploadQueue, Trash, RecentFiles, FilePreview,
ArchiveViewer, FileDetails, SharePanel, SyncStatus and QuotaMeter.

FileIcon draws six kinds as hand-placed 12x12 pages and a folder. The
browsers build on data.Tree, List, GridView and Table; ArchiveViewer
owns its sort and keeps the caller's index on its entry. UploadQueue
keys rows by name so focus stays on its row. SharePanel never logs the
link. SyncStatus turns its arrows on Busy steps, so syncing moves under
Reduce Motion.

data.Tree now opens the closed branches above a chosen path it knows,
so a caller's starting path survives the first frame.
2026-10-12 09:27:26 -04:00

89 lines
2.7 KiB
Go

package files
import (
"cmp"
"fmt"
"log/slog"
"math"
"slices"
"github.com/egoist/mygo/ui"
"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/data"
"git.zacharyzhang.com/ZacharyZhang-NY/8bitMyGoUI/pixel"
)
// Entry is a file packed in an archive.
type Entry struct {
Path string
// Size and Packed are bytes before and after packing.
Size, Packed int64
}
type ArchiveViewerOptions struct {
// Height is the rows' in dots; zero means 120.
Height int
Disabled bool
}
type ArchiveViewerResult struct {
Element *ui.Element
// Sorted reports a header click this frame.
Changed, Sorted bool
}
type archiveKey struct{}
// archiveView is the sort and the row chosen in it.
type archiveView struct {
sort data.Sort
row int
}
// ArchiveViewer lists entries and sizes; headers sort them.
func ArchiveViewer(c *ui.Context, text string, entries []Entry, selected *int, o ArchiveViewerOptions) ArchiveViewerResult {
k := pixel.K(c)
pick("ArchiveViewer", selected, len(entries))
var total, packed int64
for _, e := range entries {
// Checked against what is left, so sums cannot overflow.
if e.Path == "" || e.Size < 0 || e.Packed < 0 || e.Size > math.MaxInt64-total || e.Packed > math.MaxInt64-packed {
panic(fmt.Sprintf("files: ArchiveViewer entry %q of %d, %d bytes", e.Path, e.Size, e.Packed))
}
total, packed = total+e.Size, packed+e.Packed
}
col := ui.Column(c).Gap(k.D(3))
st := ui.Local(col, archiveKey{}, func() archiveView { return archiveView{} })
// The view sorts; the caller's index stays on its entry.
order := make([]int, len(entries))
for i := range order {
order[i] = i
}
slices.SortStableFunc(order, func(a, b int) int {
ea, eb := entries[a], entries[b]
n := [3]int{cmp.Compare(ea.Path, eb.Path), cmp.Compare(ea.Size, eb.Size), cmp.Compare(ea.Packed, eb.Packed)}[st.sort.Column]
if st.sort.Desc {
return -n
}
return n
})
st.row = slices.Index(order, *selected)
var res ArchiveViewerResult
cols := []data.Column{{Title: k.Msg("name"), Width: 112}, {Title: k.Msg("size"), Width: 56}, {Title: k.Msg("packed"), Width: 64}}
res.Element = col.Children(func() {
t := data.Table(c, text, cols, len(entries), &st.sort, &st.row, data.TableOptions{Height: o.Height, Disabled: o.Disabled}, func(r, col int) string {
e := entries[order[r]]
return [3]string{e.Path, size(e.Size), size(e.Packed)}[col]
})
if t.Changed && st.row >= 0 {
*selected, res.Changed = order[st.row], true
}
res.Sorted = t.Sorted
pixel.Text(c, fmt.Sprintf(k.Msg("archive_total"), len(entries), size(total), size(packed)), pixel.TextOptions{Slot: pixel.Faint})
})
if res.Changed {
slog.Debug("8bit: archive viewer", "label", text, "entry", *selected)
}
return res
}