Update Documentation for Pyface 8.0 release (#1238)

This PR includes general small improvements to the documentation,
docstings and examples to improve the generated documentation for the
website.

.github/workflows/test-docs-with-edm.yml

@@ -0,0 +1,56 @@
+# This workflow targets stable released dependencies from EDM.
+# Note that some packages may not actually be installed from EDM but from
+# PyPI, see etstool.py implementations.
+
+name: Build docs with EDM
+
+on: [pull_request, workflow_dispatch]
+
+env:
+  INSTALL_EDM_VERSION: 3.5.0
+  QT_MAC_WANTS_LAYER: 1
+
+jobs:
+
+  # Build docs using EDM packages
+  docs-with-edm:
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+        toolkit: ['pyside6']
+      fail-fast: false
+    timeout-minutes: 20  # should be plenty, it's usually < 5
+    runs-on: ${{ matrix.os }}
+    env:
+      # Set root directory, mainly for Windows, so that the EDM Python
+      # environment lives in the same drive as the cloned source. Otherwise
+      # 'pip install' raises an error while trying to compute
+      # relative path between the site-packages and the source directory.
+      EDM_ROOT_DIRECTORY: ${{ github.workspace }}/.edm
+    steps:
+      - uses: actions/checkout@v3
+      - name: Install Qt dependencies
+        uses: ./.github/actions/install-qt-support
+        if: matrix.toolkit != 'wx'
+      - name: Cache EDM packages
+        uses: actions/cache@v3
+        with:
+          path: ~/.cache
+          key: ${{ runner.os }}-${{ matrix.toolkit }}-${{ hashFiles('etstool.py') }}
+      - name: Setup EDM
+        uses: enthought/setup-edm-action@v2
+        with:
+          edm-version: ${{ env.INSTALL_EDM_VERSION }}
+      - name: Install click to the default EDM environment
+        run: edm install -y wheel click coverage
+      - name: Install test environment
+        run: edm run -- python etstool.py install --toolkit=${{ matrix.toolkit }}
+      - name: Build docs
+        run: xvfb-run -a edm run -- python etstool.py docs --toolkit=${{ matrix.toolkit }}
+      - name: Archive HTML docs
+        uses: actions/upload-artifact@v3
+        with:
+          name: html-doc-bundle
+          path: docs/build/html
+          # don't need these kept for long
+          retention-days: 7

.github/workflows/test-with-edm.yml

@@ -16,6 +16,8 @@ jobs:
   test-with-edm:
     strategy:
       matrix:
+        # Note: MacOS support is contingent on not hitting any issues with
+        # unsupported CPU features such as AVX2 and so may be unstable.
         os: [ubuntu-latest, macos-latest, windows-latest]
         toolkit: ['pyside6']
       fail-fast: false

.gitignore

@@ -11,6 +11,7 @@
 build/
 dist/
 docs/build/
+docs/source/api
 
 # Auto-generated by setup.py
 pyface/_version.py

CHANGES.txt

@@ -2,6 +2,154 @@
 Pyface Changelog
 ================
 
+Release 8.0.0
+=============
+
+Highlights of this release
+--------------------------
+
+This is a major release which removes a number of things which have been
+deprecated for a number of years.  The most significant change in this release
+is that the Qt toolkit backend has been moved from the ``pyface.ui.qt4``
+package to the ``pyface.ui.qt`` package.  The "qt4" namespace had been an
+ongoing source of confusion as Qt5 and Qt6 became the most popular versions of
+Qt in use. Because this change has the potential to cause significant backwards
+compatibility issues, this release includes import hooks to continue to support
+imports from ``pyface.ui.qt4...`` which can be enabled by:
+
+- using "qt4" for the `ETS_TOOLKIT` or `ETSConfig.toolkit` values.
+- setting the `ETS_QT4_IMPORT` environment variable to a non-empty value
+- explicitly adding the import hooks to `sys.meta_path`
+
+In particular the environment variables allow users of ETS-based applications
+such as Mayavi to continue to use those applications with newer versions of
+Pyface until there is time to update their code to the new import locations.
+
+Additionally this release uses the module-level ``__getattr__`` system
+introduced in Python 3.7 to delay imports from the ``api`` modules which have
+side-effects, particularly toolkit selection.  This means that you can, for
+example, import ``pyface.api`` and toolkit selection will be deferred until
+you actually request a class or object which is toolkit-dependent.  Part of
+this included adding formal interfaces for ``ActionManager`` and its subclasses
+
+In addition this release:
+
+- adds support for Python 3.11 and drops support for Python 3.6
+- adds support for PySide 6.4+ and the new enum system
+- removes code supporting PyQt4, and supports more modern imports from
+  `pyface.qt`, such as `pyface.qt.QtWidgets`.
+- removes many things flagged as deprecated in Pyface 7
+- consistently add interface classes to ``api`` modules.
+- adds new Field subclasses, including an ImageField and LabelField
+- moves to a pyproject.toml-based packaging solution, removing setup.py
+
+Detailed changes
+----------------
+
+Thanks to:
+
+* Mark Dickinson
+* Dominik Gresch
+* JaRoSchm
+* Rahul Poruri
+* Corran Webster
+
+Features
+
+* Refactor IField and add IImageField and ILabelField Field classes (#1234)
+* Move ``pyface.ui.qt4`` to ``pyface.ui.qt`` (#1223, #1228)
+* Delayed imports with side-effects in ``api`` modules; new interfaces for
+  ``ActionManager`` and its subclasses (#1229)
+
+Enhancements
+
+* Better handling of sizes for multiple (or no) screens (#1237)
+* More arguments for the ``confirm`` function (#1221)
+* Expose interfaces in ``api`` modules and other improvemnts to ``api`` modules
+  (#1220, #1222, #1229)
+* remove deprecated modules and code (#1209, #1215)
+* PySide 6.5 support (#1238)
+* Python 3.11 and PySide 6.4 support (#1210)
+
+Fixes
+
+* Always use a no-delay timer for ``GUI`` ``invoke_later`` and
+  ``set_trait_later`` on Qt (#1226)
+* Work arounds for some end-of-process segfaults on PySide < 6.4.3 (#1214)
+* Use ``exec`` instead of ``exec_`` where possible (#1208)
+* Emit a warning rather than asserting in SplitTabWidget (#1192)
+* Remove required parent argument in Wx StatusBarManager (#1192)
+* Use integer division in DockSplitter.draw (#1190)
+
+Documentation
+
+* general updates and enhancements (#1238)
+* update copyright dates (#1191)
+
+CI
+
+* remove ``setup.py`` and use ``pyproject.toml`` (#1203, #1214)
+
+Release 7.4.4
+=============
+
+Highlights of this release
+--------------------------
+
+This is a quick bugfix release that resolves some issues with the 7.4.3 release
+on CI for downstream projects.  The issues were on testing code, and so
+shouldn't impact application code or behaviour.
+
+Detailed changes
+----------------
+
+Thanks to:
+
+* Corran Webster
+
+Fixes
+
+* Don't raise ConditionTimeoutError if test doesn't time out (#1182)
+
+CI
+
+* get CI working again with ubuntu-current on GitHub (#1186)
+
+Release 7.4.3
+=============
+
+Highlights of this release
+--------------------------
+
+This is a bugfix release that collects a number of additional issues discovered
+and fixed since the 7.4.2 release.  Among the fixes, this pins PySide6 to less than
+6.4.0, as 6.4 has breaking changes in it.
+
+Detailed changes
+----------------
+
+Thanks to:
+
+* Alex Chabot-Leclerc
+* Mark Dickinson
+* Eric Larson
+* Steven Kern
+* Corran Webster
+
+Fixes
+
+* Fix code editor gutter widget on recent Python versions (#1176)
+* fix issues with FileDialog and DirectoryDialog close method on Linux (#1175)
+* update setup.py metadata (#1173)
+* restrict to PySide versions before 6.4.0 (#1169)
+* don't do unneccessary evaluations of conditions in EventLoopHelper (#1168)
+* fix a deleted object error in PyQt5 (#1161)
+* better reporting of toolkit errors (#1157)
+
+Documentation
+
+* fix some Python 2 style print statements in documentation (#1157)
+
 Release 7.4.2
 =============
 

README.rst

@@ -3,44 +3,92 @@ Pyface: Traits-capable Windowing Framework
 ==========================================
 
 The Pyface project contains a toolkit-independent GUI abstraction layer,
-which is used to support the "visualization" features of the Traits package.
-Thus, you can write code in terms of the Traits API (views, items, editors,
-etc.), and let Pyface and your selected toolkit and back-end take care of
-the details of displaying them.
+which is used to support the "visualization" features of the Enthought Tool
+Suite libraries.  Pyface contains Traits-aware wrappers of standard GUI
+elements such as Windows, Dialogs and Fields, together with the "Tasks"
+application framework which provides a rich GUI experience with dock panes,
+tabbed editors, and so forth.  This permits you to write cross-platform
+interactive GUI code without needing to use the underlying GUI backend.
 
 The following GUI backends are supported:
 
 - PySide2 (stable) and PySide6 (experimental)
 - PyQt5 (stable) and PyQt6 (in development)
 - wxPython 4 (experimental)
 
+Example
+-------
+
+The following code creates a window with a simple Python shell:
+
+..  code-block:: python
+
+    from pyface.api import ApplicationWindow, GUI, IPythonShell
+
+    class MainWindow(ApplicationWindow):
+        """ The main application window. """
+
+        #: The PythonShell that forms the contents of the window
+        shell = Instance(IPythonShell, allow_none=False)
+
+        def _create_contents(self, parent):
+            """ Create the editor. """
+            self.shell.create(parent)
+            return self.shell.control
+
+        def destroy(self):
+            self.shell.destroy()
+            super().destroy()
+
+        def _shell_default(self):
+            from pyface.api import PythonShell
+            return PythonShell()
+
+    # Application entry point.
+    if __name__ == "__main__":
+        # Create the GUI.
+        gui = GUI()
+
+        # Create and open the main window.
+        window = MainWindow(title="Python Shell", size=(640, 480))
+        window.open()
+
+        # Start the GUI event loop!
+        gui.start_event_loop()
+
+..  image:: https://raw.github.com/enthought/pyface/main/shell_window.png
+    :alt: A Pyface GUI window containing a Python shell.
+
 Installation
 ------------
 
-GUI backends are marked as optional dependencies of Pyface. Some features
-or infrastructures may also require additional dependencies.
+Pyface is a pure Python package.  In most cases Pyface will be installable
+using a simple ``pip install`` command.
 
-To install with PySide2 dependencies::
+To install with a backend, choose one of the following, as appropriate:
 
-    $ pip install pyface[pyside2]
+..  code-block:: console
 
-To install with PySide6 dependencies (experimental)::
+    $ pip install pyface[pyside2]
 
     $ pip install pyface[pyside6]
 
-To install with PyQt5 dependencies::
-
     $ pip install pyface[pyqt5]
 
-To install with wxPython4 dependencies (experimental)::
-
     $ pip install pyface[wx]
 
-``pillow`` is an optional dependency for the PILImage class::
+Some optional functionality uses ``pillow`` and ``numpy`` and these can be
+installed using optional dependencies:
+
+..  code-block:: console
 
     $ pip install pyface[pillow]
 
-To install with additional test dependencies::
+    $ pip install pyface[numpy]
+
+For running tests a few more packages are required:
+
+..  code-block:: console
 
     $ pip install pyface[test]
 
@@ -51,20 +99,6 @@ Documentation
 
 * `API Documentation <http://docs.enthought.com/pyface/api/pyface.html>`_.
 
-Prerequisites
--------------
-
-Pyface depends on:
-
-* `Traits <https://github.com/enthought/traits>`_
-
-* a GUI toolkit as described above
-
-* Pygments for syntax highlighting in the Qt code editor widget.
-
-* some widgets may have additional optional dependencies such as NumPy or
-  Pillow.
-
 .. end_of_long_description
 
 Developing Pyface

docs/source/conf.py

@@ -11,7 +11,10 @@
 # All configuration values have a default value; values that are commented out
 # serve to show the default value.
 
-import importlib.metadata
+try:
+    from importlib.metadata import version as metadata_version
+except:
+    from importlib_metadata import version as metadata_version
 
 # General configuration
 # ---------------------
@@ -43,7 +46,7 @@
 
 # The default replacements for |version| and |release|, also used in various
 # other places throughout the built documents.
-version = release = importlib.metadata.version("pyface")
+version = release = metadata_version("pyface")
 
 # There are two options for replacing |today|: either, you set today to some
 # non-false value, then it is used: