Added copy (yank) function on keypress 'y'

pyproject.toml

@@ -15,6 +15,7 @@ python = "^3.8"
 click = "^8.1.7"
 textual = "^0.58.0"
 typing-extensions = "^4.9.0"
+pyperclip = "^1.9.0"
 
 [tool.poetry.group.dev.dependencies]
 textual-dev = "^1.4.0"

src/toolong/help.py

@@ -41,6 +41,7 @@
 - `ctrl+l` Toggle line numbers.
 - `ctrl+t` Tail current file.
 - `ctrl+c` Exit the app.
+- `y`      Copy (yank) current line in pointer mode
 
 ### Opening Files
 
@@ -75,6 +76,8 @@
 To enter pointer mode, press `enter` or click a line.
 When in pointer mode, the navigation keys will move this pointer rather than scroll the log file.
 
+Press `y` to copy (yank) the current line to the system clipboard.
+
 Press `enter` again or click the line a second time to expand the line in to a new panel.
 
 Press `escape` to hide the line panel if it is visible, or to leave pointer mode if the line panel is not visible.

src/toolong/log_lines.py

@@ -4,6 +4,7 @@
 from queue import Empty, Queue
 from operator import itemgetter
 import platform
+import pyperclip
 from threading import Event, RLock, Thread
 
 from textual.message import Message
@@ -139,6 +140,7 @@ class LogLines(ScrollView, inherit_bindings=False):
         Binding("pagedown,space", "page_down", "Page Down", show=False),
         Binding("enter", "select", "Select line", show=False),
         Binding("escape", "dismiss", "Dismiss", show=False, priority=True),
+        Binding("y", "copy", "Copy (yank) current selection", show=False, priority=True),
         Binding("m", "navigate(+1, 'm')"),
         Binding("M", "navigate(-1, 'm')"),
         Binding("o", "navigate(+1, 'h')"),
@@ -906,6 +908,11 @@ def action_navigate(self, steps: int, unit: Literal["m", "h", "d"]) -> None:
         self.pointer_line = line_no
         self.scroll_pointer_to_center(animate=abs(initial_line_no - line_no) < 100)
 
+    def action_copy(self, **argv):
+        if self.pointer_line:
+            line = self.get_line_from_index(self.pointer_line)
+            pyperclip.copy(line)
+
     def watch_tail(self, tail: bool) -> None:
         self.set_class(tail, "-tail")
         if tail: