Support only enable glightbox with on-glb class in given page (#28)

mkdocs_glightbox/plugin.py

@@ -139,8 +139,12 @@ def wrap_img_with_anchor(self, match, plugin_config, skip_class, meta):
             classes = re.findall(r'class="([^"]+)"', img_attr)
             classes = [c for match in classes for c in match.split()]
 
-            if set(skip_class) & set(classes):
-                return img_tag
+            if meta.get("glightbox-manual", False):
+                if "on-glb" not in classes:
+                    return img_tag
+            else:
+                if set(skip_class) & set(classes):
+                    return img_tag
 
             if self.using_material_privacy:
                 # skip href attribute if using material privacy plugin, will be set by js code

tests/fixtures/docs/enable_by_image.md

@@ -0,0 +1,7 @@
+---
+glightbox-manual: true
+---
+
+![image](img.png){.on-glb}
+
+![image](img.png)

tests/test_builds.py

@@ -633,3 +633,24 @@ def test_privacy(tmp_path):
         rf"{patch_script}",
         contents,
     )
+
+
+def test_enable_by_image(tmp_path):
+    """
+    Enable by the image with on-glb class
+    """
+    mkdocs_file = "mkdocs-material.yml"
+    testproject_path = validate_mkdocs_file(tmp_path, f"tests/fixtures/{mkdocs_file}")
+    file = testproject_path / "site/enable_by_image/index.html"
+    contents = file.read_text(encoding="utf8")
+    path = "../"
+    validate_static(contents, path=path)
+    validate_script(contents)
+    assert re.search(
+        rf'<p><img alt="image" src="{re.escape(path)}img\.png" \/><\/p>',
+        contents,
+    )
+    assert re.search(
+        rf'<a class="glightbox".*?href="{re.escape(path)}img\.png".*?><img.*?class="on-glb".*?src="{re.escape(path)}img\.png".*?\/><\/a>',
+        contents,
+    )