Make bootstrap available in extension resources (#7)

Author: alexrudy

example/app.py

@@ -0,0 +1,7 @@
+from flask import Flask
+
+from bootlace.extension import Bootlace
+
+
+app = Flask(__name__)
+bootlace = Bootlace(app)

pyproject.toml

@@ -71,7 +71,8 @@ exclude_lines = [
   "raise NotImplementedError",
   "if 0:",
   "except BaseException:",
-  ": \\.\\.\\.",
+  "\\.\\.\\.",
+  "if app is not None:",
 ]
 omit = ["src/bootlace/_version.py", "src/bootlace/testing/*"]
 

src/bootlace/__init__.py

@@ -3,11 +3,12 @@
 # SPDX-License-Identifier: MIT
 from . import __about__
 from ._version import __version__
+from .extension import Bootlace
 from .util import _monkey_patch_dominate
 from .util import as_tag
 from .util import render
 
-__all__ = ["__version__", "__about__", "as_tag", "render"]
+__all__ = ["__version__", "__about__", "as_tag", "render", "Bootlace"]
 
 
 _monkey_patch_dominate()

src/bootlace/extension.py

@@ -0,0 +1,50 @@
+from flask import Blueprint
+from flask import current_app
+from flask import Flask
+from flask import url_for
+
+
+class Bootlace:
+    """Flask extension for bootlace"""
+
+    def __init__(self, app: Flask | None = None) -> None:
+        if app is not None:
+            self.init_app(app)
+
+    def init_app(self, app: Flask) -> None:
+        """Initialize the extension with the Flask app"""
+
+        app.extensions["bootlace"] = self
+        app.jinja_env.globals["bootlace"] = self
+
+        name = app.config.setdefault("BOOTLACE_BLUEPRINT_NAME", "bootlace")
+
+        blueprint = Blueprint(
+            name,
+            __name__,
+            template_folder="templates",
+            static_folder="static",
+            static_url_path="/static/bootstrap",
+        )
+
+        app.register_blueprint(blueprint)
+
+    @property
+    def static_view(self) -> str:
+        bp = current_app.config["BOOTLACE_BLUEPRINT_NAME"]
+        return f"{bp}.static"
+
+    @property
+    def icons(self) -> str:
+        """The URL for the SVG source for the icons"""
+        return url_for(self.static_view, filename="icons/bootstrap-icons.svg")
+
+    @property
+    def css(self) -> str:
+        """The URL for the Bootstrap CSS file"""
+        return url_for(self.static_view, filename="css/bootstrap.min.css")
+
+    @property
+    def js(self) -> str:
+        """The URL for the Bootstrap JS file"""
+        return url_for(self.static_view, filename="js/bootstrap.min.js")

src/bootlace/icon.py

@@ -17,7 +17,7 @@ class Icon:
     """
 
     #: Endpoint name for getting the Bootstrap Icon SVG file
-    endpoint: ClassVar[str] = "static"
+    endpoint: ClassVar[str] = "bootlace.static"
 
     #: Filename for the Bootstrap Icon SVG file
     filename: ClassVar[str] = "icons/bootstrap-icons.svg"