Fixed download sizes and directory highlighting

Co-Authored-By: Claude Opus 5.5 <[email protected]>

Client/Browser.py

@@ -11,7 +11,7 @@ from typing import Callable, Optional
 import flet as ft
 
 from App import App
-from Core import ChipButtonStyle, FileIcons, HumanSize, OpenExternally, Palette
+from Core import ChipButtonStyle, FileIcons, HumanDuration, HumanSize, OpenExternally, Palette
 from Sources import BaseName, Entry, JoinPath, MoveDestination, ParentPath, SourceError
 from Graph import GraphView
 from Viewer import FileView
@@ -84,11 +84,12 @@ class Browser(ft.Column):
             spacing=8,
             tight=True,
         )
-        # Shown while uploading: which file, how far (Uploads' progress).
-        self.UploadText = ft.Text("", size=12, color=Palette.Overlay0)
-        self.UploadBar = ft.ProgressBar(value=0, color=Palette.Mauve, bgcolor=Palette.Surface0, bar_height=4)
-        self.UploadRow = ft.Container(ft.Column([self.UploadText, self.UploadBar], spacing=4),
+        # Shown while uploading or downloading: which file, how far, how long (ShowTransfer).
+        self.TransferText = ft.Text("", size=12, color=Palette.Overlay0)
+        self.TransferBar = ft.ProgressBar(value=0, color=Palette.Mauve, bgcolor=Palette.Surface0, bar_height=4)
+        self.TransferRow = ft.Container(ft.Column([self.TransferText, self.TransferBar], spacing=4),
                                       padding=ft.Padding.symmetric(horizontal=8, vertical=6), visible=False)
+        self.TransferShown: Optional[tuple] = None  # (text, percent) on screen
         self.EntryList = ft.ListView(expand=True, spacing=2)
         # One shared popup host, opened programmatically (see _RequestMenu).
         # Its built-in triggers can't be switched off, so they're set to
@@ -108,7 +109,7 @@ class Browser(ft.Column):
             # and the breadcrumbs get the rest (and wrap when it's tight).
             ft.Row([ft.Container(self.Breadcrumbs, padding=8, expand=True), ft.Container(self.ActionsToolbar, padding=8)]),
             ft.Divider(height=1, color=Palette.Surface1),
-            self.UploadRow,
+            self.TransferRow,
             self.FileArea,
         ]
         self._ShowList(Update=False)
@@ -610,21 +611,14 @@ class Browser(ft.Column):
         Total = sum(Sizes)
         Verb = "Uploading" if Server else "Copying in"
 
-        Shown = [-1, -1]  # (file, percent) on screen: redraw only when it changes
+        Started = time.monotonic()
 
         def ShowProgress(Index: int, Fraction: float) -> None:
-            Done = sum(Sizes[:Index]) + Sizes[Index] * Fraction
-            Percent = int(Done / Total * 100) if Total else 100
-            if Shown == [Index, Percent]:
-                return
-            Shown[:] = [Index, Percent]
             Of = f" ({Index + 1} of {len(Paths)})" if len(Paths) > 1 else ""
-            self.UploadText.value = (f"{Verb} {Paths[Index].name}{Of}: {Percent}% "
-                                     f"({HumanSize(int(Done))} of {HumanSize(Total)})")
-            self.UploadBar.value = Done / Total if Total else 1
-            self.UploadRow.update()
+            self._ShowTransfer(f"{Verb} {Paths[Index].name}{Of}", sum(Sizes[:Index]) + Sizes[Index] * Fraction, Total, Started)
 
-        self.UploadRow.visible = True
+        self.TransferShown = None
+        self.TransferRow.visible = True
         for Index, LocalFile in enumerate(Paths):
             ShowProgress(Index, 0)
             try:
@@ -634,15 +628,15 @@ class Browser(ft.Column):
                 Saved += 1
             except SourceError as Error:
                 if Error.Status == 401:
-                    self.UploadRow.visible = False
-                    self.UploadRow.update()
+                    self.TransferRow.visible = False
+                    self.TransferRow.update()
                     self.TheApp.HandleError(Error)
                     return
                 Failed.append(f"{LocalFile.name}: {Error}")
             except OSError as Error:
                 Failed.append(f"{LocalFile.name}: {Error}")
-        self.UploadRow.visible = False
-        self.UploadRow.update()
+        self.TransferRow.visible = False
+        self.TransferRow.update()
         self.Refresh()
         if Failed:
             self.TheApp.Notify("Couldn't upload " + "; ".join(Failed), "error")
@@ -663,14 +657,42 @@ class Browser(ft.Column):
                                                     initial_directory=str(Path.home() / "Downloads"))
         if not Chosen:
             return
-        self.TheApp.Notify(f"Downloading {FileName}...", "info")
+        Started = time.monotonic()
+        self.TransferShown = None
+        self.TransferText.value = f"Preparing {FileName}…"  # a directory is zipped first
+        self.TransferBar.value = None  # moving, until the size is known
+        self.TransferRow.visible = True
+        self.TransferRow.update()
         try:
-            await asyncio.to_thread(Server.Download, Root, RelativePath, Path(Chosen))
+            await asyncio.to_thread(Server.Download, Root, RelativePath, Path(Chosen),
+                                    lambda Done, Total: self._ShowTransfer(f"Downloading {FileName}", Done, Total, Started))
         except SourceError as Error:
             self.TheApp.HandleError(Error, f"Couldn't download {Name}")
             return
+        finally:
+            self.TransferRow.visible = False
+            self.TransferRow.update()
         self.TheApp.Notify(f"Saved {Chosen}", "success")
 
+    def _ShowTransfer(self, What: str, Done: float, Total: int, Started: float) -> None:
+        """The transfer row: "Downloading a.zip: 45% (54.0 MB of 122.1 MB,
+        about 12 s left)". Redraws only when the percentage changes."""
+        Percent = int(Done / Total * 100) if Total else None
+        if self.TransferShown == (What, Percent):
+            return
+        self.TransferShown = (What, Percent)
+        Elapsed = time.monotonic() - Started
+        if Percent is None:
+            Detail = f"{HumanSize(int(Done))}"
+        else:
+            Detail = f"{Percent}% ({HumanSize(int(Done))} of {HumanSize(Total)}"
+            if Elapsed > 2 and 0 < Done < Total:
+                Detail += f", about {HumanDuration((Total - Done) * Elapsed / Done)} left"
+            Detail += ")"
+        self.TransferText.value = f"{What}: {Detail}"
+        self.TransferBar.value = Done / Total if Total else None
+        self.TransferRow.update()
+
     # --- Keyboard ---------------------------------------------------------
 
     def _SetShortcutsPaused(self, Paused: bool) -> None: