PyObjC SafariServices Framework

Warnings

• breaking PyObjC major versions frequently drop support for older Python versions. For example, v12.0 dropped Python 3.9, and v11.0 dropped Python 3.8. Ensure your Python environment meets the `requires_python` specification for the PyObjC version you are using.
  Fix: Upgrade Python to a supported version for your PyObjC release, or use an older PyObjC version compatible with your Python environment. Always check `requires_python` on PyPI.
• breaking PyObjC releases are tightly coupled with macOS SDK versions. Upgrading macOS might require upgrading PyObjC to a version that includes updated framework bindings for the new SDK, or vice-versa. Using an incompatible combination can lead to missing symbols or unexpected behavior.
  Fix: Keep PyObjC updated with your macOS version. Check PyObjC release notes for targeted macOS SDK support. For critical applications, pin PyObjC to a version known to work with your specific macOS release.
• gotcha PyObjC v11.1 introduced significant changes to how initializer (`init` family) methods handle automatic reference counting (ARC). Previously, PyObjC might not have correctly modeled that `init` methods steal a reference to `self` and return a new reference. This can lead to memory management issues if not handled correctly when implementing custom Cocoa classes in Python.
  Fix: When implementing `init` methods in Python subclasses of Cocoa objects, be aware of the ARC semantics. Ensure proper reference management, especially if porting code from older PyObjC versions or if encountering unexpected deallocations.
• gotcha PyObjC's handling of `__init__` and `__new__` for user-defined subclasses of Cocoa objects can be tricky. In v10.3, `__init__` was disabled when a user-defined `__new__` was present, causing breakage. While v10.3.1 re-enabled `__init__` for specific `__new__` scenarios, it highlights a potential footgun when customizing object creation.
  Fix: When subclassing Cocoa objects and providing custom `__new__` or `__init__` methods, thoroughly test object lifecycle. Prefer using standard Cocoa initializer patterns where possible. Refer to PyObjC documentation for best practices on subclassing and initialization.
• gotcha Frameworks can be deprecated or removed by Apple in newer macOS versions. PyObjC will drop bindings for such frameworks when they can no longer be built against the latest SDK (e.g., IMServicePlugIn in v10.0). Code relying on deprecated frameworks may stop working unexpectedly.
  Fix: Regularly check Apple's developer documentation for framework deprecations and removals. Be prepared to update your code to use modern APIs if a framework you rely on becomes unavailable in a newer PyObjC version.

Install

• pip install pyobjc-framework-safariservices Install SafariServices bindings
• pip install pyobjc Install all PyObjC frameworks (recommended)

Imports

• SafariServices

  import SafariServices

  Frameworks are typically imported directly after importing `objc` if needed, not usually from AppKit.

Quickstart

This example demonstrates how to import the SafariServices framework and instantiate a basic object like `SFSafariViewController`. In a full macOS application, UI-related objects like `SFSafariViewController` must be created and managed on the main thread within an `NSApplication` context.

import objc
from Foundation import NSURL
import SafariServices

# Get the Python class for SFSafariViewController
# This class is part of SafariServices.framework
SFSafariViewController = SafariServices.SFSafariViewController

# Create a sample URL
url = NSURL.URLWithString_("https://www.example.com")

# Instantiate SFSafariViewController
# In a real macOS application, this controller would need to be
# initialized on the main thread and presented by an NSViewController.
# For this quickstart, we just demonstrate instantiation.
try:
    controller = SFSafariViewController.alloc().initWithURL_entersReaderIfAvailable_(url, False)
    print(f"Successfully created SFSafariViewController instance: {controller}")
    # Example of accessing a property (if available and safe outside main thread)
    # if hasattr(controller, 'URL'):
    #     print(f"Controller URL: {controller.URL()}")
except Exception as e:
    print(f"Error instantiating SFSafariViewController (may require main thread/application context): {e}")
    print("Note: SFSafariViewController typically requires a running Cocoa application and main thread for full functionality.")