feat,fix!: Resize, refresh improvements (#523)

Resolves #468.

# Changes

## Breaking changes

- `Session.new_window()` + `Window.split_window()`: No longer `attach` by default. Pass `attach=True` for the old behavior.
- `Pane.resize_pane` renamed to `Pane.resize()`

## `Window.resize_window()`: Added

If `Pane.resize_pane()` didn't work before, try resizing the window.

## `Pane.resize()`: Arguments added

## `Server.panes`: Fix listing of panes

Would list only panes in attached session, rather than all in a server.

## `Window.refresh()` and `Pane.refresh()`: Refresh more underlying state

## `Obj._refresh`: Allow passing args

e.g. `-a` (all) to `list-panes` and `list-windows`

Author: tony

CHANGES

@@ -14,10 +14,57 @@ $ pip install --user --upgrade --pre libtmux
 
 <!-- Maintainers and contributors: Insert change notes for the next release above -->
 
+### Breaking changes
+
+#### `Session.new_window()` + `Window.split_window()`: No longer attaches by default
+
+- 0.28 +: Now _defaults_ to `attach=False`.
+- 0.27.1 and before: _defaults_ to `attach=True`.
+
+Pass `attach=True` for the old behavior.
+
+#### `Pane.resize_pane()` renamed to `Pane.resize()`: (#523)
+
+This convention will be more consistent with `Window.resize()`.
+
+#### `Pane.resize_pane()`: Params changed (#523)
+
+- No longer accepts `-U`, `-D`, `-L`, `-R` directly, instead accepts
+  `ResizeAdjustmentDirection`.
+
+### New features
+
+#### `Pane.resize()`: Improved param coverage (#523)
+
+- Learned to accept adjustments via `adjustment_direction` w/
+  `ResizeAdjustmentDirection` + `adjustment`.
+
+- Learned to accept manual `height` and / or `width` (columns/rows or percentage)
+
+- Zoom (and unzoom)
+
+#### `Window.resize_window()`: New Method (#523)
+
+If `Pane.resize_pane()` (now `Pane.resize()`) didn't work before, try resizing the window.
+
+### Bug fixes
+
+#### `Window.refresh()` and `Pane.refresh()`: Refresh more underlying state (#523)
+
+#### `Obj._refresh`: Allow passing args (#523)
+
+e.g. `-a` (all) to `list-panes` and `list-windows`
+
+#### `Server.panes`: Fix listing of panes (#523)
+
+Would list only panes in attached session, rather than all in a server.
+
 ### Improvement
 
 - Pane, Window: Improve parsing of option values that return numbers
   (#520)
+- `Obj._refresh`: Allow passing `list_extra_args` to ensure `list-windows` and
+  `list-panes` can return more than the target (#523)
 
 ### Tests
 

docs/reference/constants.md

@@ -0,0 +1,6 @@
+# Constants
+
+```{eval-rst}
+.. automodule:: libtmux.constants
+   :members:
+```

docs/reference/index.md

@@ -11,6 +11,7 @@ servers
 sessions
 windows
 panes
+constants
 common
 exceptions
 ```

src/libtmux/__init__.py

@@ -1,4 +1,4 @@
-# flake8: NOQA
+"""libtmux, a typed, pythonic API wrapper for the tmux terminal multiplexer."""
 from .__about__ import (
     __author__,
     __copyright__,

src/libtmux/common.py

@@ -1,4 +1,3 @@
-# flake8: NOQA: W605
 """Helper methods and mixins for libtmux.
 
 libtmux.common

src/libtmux/constants.py

@@ -0,0 +1,20 @@
+"""Constant variables for libtmux."""
+import enum
+import typing as t
+
+
+class ResizeAdjustmentDirection(enum.Enum):
+    """Used for *adjustment* in ``resize_window``, ``resize_pane``."""
+
+    Up = "UP"
+    Down = "DOWN"
+    Left = "LEFT"
+    Right = "RIGHT"
+
+
+RESIZE_ADJUSTMENT_DIRECTION_FLAG_MAP: t.Dict[ResizeAdjustmentDirection, str] = {
+    ResizeAdjustmentDirection.Up: "-U",
+    ResizeAdjustmentDirection.Down: "-D",
+    ResizeAdjustmentDirection.Left: "-L",
+    ResizeAdjustmentDirection.Right: "-R",
+}

src/libtmux/exc.py

@@ -132,3 +132,33 @@ class NoWindowsExist(WindowError):
 
     def __init__(self, *args: object):
         return super().__init__("No windows exist for object")
+
+
+class AdjustmentDirectionRequiresAdjustment(LibTmuxException, ValueError):
+    """If *adjustment_direction* is set, *adjustment* must be set."""
+
+    def __init__(self) -> None:
+        super().__init__("adjustment_direction requires adjustment")
+
+
+class WindowAdjustmentDirectionRequiresAdjustment(
+    WindowError, AdjustmentDirectionRequiresAdjustment
+):
+    """ValueError for :meth:`libtmux.Window.resize_window`."""
+
+    pass
+
+
+class PaneAdjustmentDirectionRequiresAdjustment(
+    WindowError, AdjustmentDirectionRequiresAdjustment
+):
+    """ValueError for :meth:`libtmux.Pane.resize_pane`."""
+
+    pass
+
+
+class RequiresDigitOrPercentage(LibTmuxException, ValueError):
+    """Requires digit (int or str digit) or a percentage."""
+
+    def __init__(self) -> None:
+        super().__init__("Requires digit (int or str digit) or a percentage.")

src/libtmux/neo.py

@@ -167,12 +167,14 @@ def _refresh(
         obj_key: str,
         obj_id: str,
         list_cmd: "ListCmd" = "list-panes",
+        list_extra_args: "t.Optional[ListExtraArgs]" = None,
     ) -> None:
         assert isinstance(obj_id, str)
         obj = fetch_obj(
             obj_key=obj_key,
             obj_id=obj_id,
             list_cmd=list_cmd,
+            list_extra_args=list_extra_args,
             server=self.server,
         )
         assert obj is not None

src/libtmux/pane.py

@@ -1,4 +1,3 @@
-# flake8: NOQA: W605
 """Pythonization of the :ref:`tmux(1)` pane.
 
 libtmux.pane
@@ -11,7 +10,11 @@
 import warnings
 from typing import overload
 
-from libtmux.common import tmux_cmd
+from libtmux.common import has_gte_version, tmux_cmd
+from libtmux.constants import (
+    RESIZE_ADJUSTMENT_DIRECTION_FLAG_MAP,
+    ResizeAdjustmentDirection,
+)
 from libtmux.neo import Obj, fetch_obj
 
 from . import exc
@@ -71,7 +74,11 @@ class Pane(Obj):
     def refresh(self) -> None:
         """Refresh pane attributes from tmux."""
         assert isinstance(self.pane_id, str)
-        return super()._refresh(obj_key="pane_id", obj_id=self.pane_id)
+        return super()._refresh(
+            obj_key="pane_id",
+            obj_id=self.pane_id,
+            list_extra_args=("-a",),
+        )
 
     @classmethod
     def from_pane_id(cls, server: "Server", pane_id: str) -> "Pane":
@@ -122,31 +129,99 @@ def cmd(self, cmd: str, *args: t.Any, **kwargs: t.Any) -> tmux_cmd:
     Commands (tmux-like)
     """
 
-    def resize_pane(self, *args: t.Any, **kwargs: t.Any) -> "Pane":
+    def resize(
+        self,
+        # Adjustments
+        adjustment_direction: t.Optional[ResizeAdjustmentDirection] = None,
+        adjustment: t.Optional[int] = None,
+        # Manual
+        height: t.Optional[t.Union[str, int]] = None,
+        width: t.Optional[t.Union[str, int]] = None,
+        # Zoom
+        zoom: t.Optional[bool] = None,
+        # Mouse
+        mouse: t.Optional[bool] = None,
+        # Optional flags
+        trim_below: t.Optional[bool] = None,
+    ) -> "Pane":
         """Resize tmux pane.
 
         Parameters
         ----------
-        target_pane : str
-            ``target_pane``, or ``-U``,``-D``, ``-L``, ``-R``.
+        adjustment_direction : ResizeAdjustmentDirection, optional
+            direction to adjust, ``Up``, ``Down``, ``Left``, ``Right``.
+        adjustment : ResizeAdjustmentDirection, optional
 
-        Other Parameters
-        ----------------
-        height : int
+        height : int, optional
             ``resize-pane -y`` dimensions
-        width : int
+        width : int, optional
             ``resize-pane -x`` dimensions
 
+        zoom : bool
+            expand pane
+
+        mouse : bool
+            resize via mouse
+
+        trim_below : bool
+            trim below cursor
+
         Raises
         ------
-        exc.LibTmuxException
+        :exc:`exc.LibTmuxException`,
+        :exc:`exc.PaneAdjustmentDirectionRequiresAdjustment`,
+        :exc:`exc.RequiresDigitOrPercentage`
+
+        Returns
+        -------
+        :class:`Pane`
+
+        Notes
+        -----
+        Three types of resizing are available:
+
+        1. Adjustments: ``adjustment_direction`` and ``adjustment``.
+        2. Manual resizing: ``height`` and / or ``width``.
+        3. Zoom / Unzoom: ``zoom``.
         """
-        if "height" in kwargs:
-            proc = self.cmd("resize-pane", "-y%s" % int(kwargs["height"]))
-        elif "width" in kwargs:
-            proc = self.cmd("resize-pane", "-x%s" % int(kwargs["width"]))
-        else:
-            proc = self.cmd("resize-pane", args[0])
+        tmux_args: t.Tuple[str, ...] = ()
+
+        ## Adjustments
+        if adjustment_direction:
+            if adjustment is None:
+                raise exc.PaneAdjustmentDirectionRequiresAdjustment()
+            tmux_args += (
+                f"{RESIZE_ADJUSTMENT_DIRECTION_FLAG_MAP[adjustment_direction]}",
+                str(adjustment),
+            )
+        elif height or width:
+            ## Manual resizing
+            if height:
+                if isinstance(height, str):
+                    if height.endswith("%") and not has_gte_version("3.1"):
+                        raise exc.VersionTooLow
+                    if not height.isdigit() and not height.endswith("%"):
+                        raise exc.RequiresDigitOrPercentage
+                tmux_args += (f"-y{height}",)
+
+            if width:
+                if isinstance(width, str):
+                    if width.endswith("%") and not has_gte_version("3.1"):
+                        raise exc.VersionTooLow
+                    if not width.isdigit() and not width.endswith("%"):
+                        raise exc.RequiresDigitOrPercentage
+
+                tmux_args += (f"-x{width}",)
+        elif zoom:
+            ## Zoom / Unzoom
+            tmux_args += ("-Z",)
+        elif mouse:
+            tmux_args += ("-M",)
+
+        if trim_below:
+            tmux_args += ("-T",)
+
+        proc = self.cmd("resize-pane", *tmux_args)
 
         if proc.stderr:
             raise exc.LibTmuxException(proc.stderr)
@@ -442,7 +517,7 @@ def get(self, key: str, default: t.Optional[t.Any] = None) -> t.Any:
 
         .. deprecated:: 0.16
 
-           Deprecated by attribute lookup.e.g. ``pane['window_name']`` is now
+           Deprecated by attribute lookup, e.g. ``pane['window_name']`` is now
            accessed via ``pane.window_name``.
 
         """
@@ -460,3 +535,38 @@ def __getitem__(self, key: str) -> t.Any:
         """
         warnings.warn(f"Item lookups, e.g. pane['{key}'] is deprecated", stacklevel=2)
         return getattr(self, key)
+
+    def resize_pane(
+        self,
+        # Adjustments
+        adjustment_direction: t.Optional[ResizeAdjustmentDirection] = None,
+        adjustment: t.Optional[int] = None,
+        # Manual
+        height: t.Optional[t.Union[str, int]] = None,
+        width: t.Optional[t.Union[str, int]] = None,
+        # Zoom
+        zoom: t.Optional[bool] = None,
+        # Mouse
+        mouse: t.Optional[bool] = None,
+        # Optional flags
+        trim_below: t.Optional[bool] = None,
+    ) -> "Pane":
+        """Resize pane, deprecated by :meth:`Pane.resize`.
+
+        .. deprecated:: 0.28
+
+           Deprecated by :meth:`Pane.resize`.
+        """
+        warnings.warn(
+            "Deprecated: Use Pane.resize() instead of Pane.resize_pane()",
+            stacklevel=2,
+        )
+        return self.resize(
+            adjustment_direction=adjustment_direction,
+            adjustment=adjustment,
+            height=height,
+            width=width,
+            zoom=zoom,
+            mouse=mouse,
+            trim_below=trim_below,
+        )

src/libtmux/pytest_plugin.py

@@ -217,7 +217,9 @@ def session(
     session_name = "tmuxp"
 
     if not server.has_session(session_name):
-        server.cmd("new-session", "-d", "-s", session_name)
+        server.new_session(
+            session_name=session_name,
+        )
 
     # find current sessions prefixed with tmuxp
     old_test_sessions = []
@@ -228,7 +230,10 @@ def session(
 
     TEST_SESSION_NAME = get_test_session_name(server=server)
 
-    session = server.new_session(session_name=TEST_SESSION_NAME, **session_params)
+    session = server.new_session(
+        session_name=TEST_SESSION_NAME,
+        **session_params,
+    )
 
     """
     Make sure that tmuxp can :ref:`test_builder_visually` and switches to