Switch from a Static to a RichLog for file preview so we can get scrolling.

borgmatic/actions/browse/archive.py

@@ -78,7 +78,7 @@ def get_archive_files(config, repository, archive_name, list_path=None):
         )
 
 
-READLINES_HINT_BYTES = 2000
+READLINES_HINT_BYTES = 100000
 
 
 def get_archive_file_content(config, repository, archive_name, file_path):
@@ -104,4 +104,8 @@ def get_archive_file_content(config, repository, archive_name, file_path):
 
         content = ''.join(line.decode() for line in lines)
 
-        return content if len(content) < READLINES_HINT_BYTES else f'{content}[...]'
+        return (
+            content
+            if len(content) < READLINES_HINT_BYTES
+            else f'{content}[... truncated for display ...]'
+        )

borgmatic/actions/browse/loading.py

@@ -14,8 +14,11 @@ def update_inline_loading_indicator(widget):
                 'loading-indicator',
                 (str(widget.get_option('loading-indicator').prompt) + '.').replace('....', ''),
             )
-    elif isinstance(widget, textual.widgets.Static):
-        widget.update((str(widget.content) + '.').replace('....', ''))
+    elif isinstance(widget, textual.widgets.RichLog):
+        with contextlib.suppress(IndexError):
+            loading_message = str(widget.lines[0].text)
+            widget.clear()
+            widget.write((loading_message + '.').replace('....', ''))
     else:
         raise ValueError(f'Unsupported widget type: {type(widget)}')
 
@@ -28,8 +31,8 @@ def add_inline_loading_indicator(widget):
         loading_option = textual.widgets.option_list.Option(loading_message, id='loading-indicator')
         widget.add_option(loading_option)
         widget.highlighted = None
-    elif isinstance(widget, textual.widgets.Static):
-        widget.update(loading_message)
+    elif isinstance(widget, textual.widgets.RichLog):
+        widget.write(loading_message)
     else:
         raise ValueError(f'Unsupported widget type: {type(widget)}')
 

borgmatic/actions/browse/panels.py

@@ -10,10 +10,10 @@ import borgmatic.actions.browse.workers
 OPTION_LIST_BINDINGS = (
     *textual.widgets.OptionList.BINDINGS,
     textual.binding.Binding(
-        key='up,k', action='cursor_up', description='up', show=True, priority=True
+        key='up,k', action='cursor_up', description='scroll up', show=True, priority=True
     ),
     textual.binding.Binding(
-        key='down,j', action='cursor_down', description='down', show=True, priority=True
+        key='down,j', action='cursor_down', description='scroll down', show=True, priority=True
     ),
     textual.binding.Binding(
         key='enter', action='select', description='select', show=True, priority=True
@@ -124,13 +124,28 @@ class Directory_list(textual.widgets.OptionList):
             self.highlighted_option_changed = True
 
 
-class File_preview(textual.widgets.Static):
+class File_preview(textual.widgets.RichLog):
+    BINDINGS = [
+        *textual.widgets.RichLog.BINDINGS,
+        textual.binding.Binding(
+            key='up', action='scroll_up', description='scroll up', show=True, priority=True
+        ),
+        textual.binding.Binding(
+            key='down', action='scroll_down', description='scroll down', show=True, priority=True
+        ),
+        textual.binding.Binding(
+            key='pageup', action='page_up', description='page up', show=True, priority=True
+        ),
+        textual.binding.Binding(
+            key='pagedown', action='page_down', description='page down', show=True, priority=True
+        ),
+    ]
+
     def __init__(self, config, repository, archive_name, file_path):
         self.config = config
         self.repository = repository
         self.archive_name = archive_name
         self.file_path = file_path
-        self.can_focus = True
 
         super().__init__(classes='panel')
         self.border_title = ' '.join(
@@ -142,6 +157,7 @@ class File_preview(textual.widgets.Static):
                 'preview',
             )
         )
+        self.auto_scroll = False
 
         timer = borgmatic.actions.browse.loading.add_inline_loading_indicator(self)
 

borgmatic/actions/browse/workers.py

@@ -89,4 +89,5 @@ def load_file_preview(browse_app, file_preview, config, repository, archive_name
 
     browse_app.call_from_thread(timer.stop)
     syntax_lexer = rich.syntax.Syntax.guess_lexer(file_path, file_content)
-    browse_app.call_from_thread(file_preview.update, rich.syntax.Syntax(file_content, syntax_lexer))
+    browse_app.call_from_thread(file_preview.clear)
+    browse_app.call_from_thread(file_preview.write, rich.syntax.Syntax(file_content, syntax_lexer))