Remove old explain page

docs/index.md

@@ -63,7 +63,7 @@ If it's animated, it has a special [representation](concepts/#animated-property)
 ## Interactive Explanation
 
 If you have a lottie animation and you want to see an interactive description
-of its contents, you can visit the [Explain my Lottie](playground/explain.md) page.
+of its contents, you can visit the [JSON Editor](playground/json_editor.md) page.
 
 ## Anatomy of a Lottie file
 

mkdocs.yml

@@ -17,6 +17,11 @@ markdown_extensions:
     - md_extensions
 extra_css:
     - /lottie-docs/style/style.css
+plugins:
+    - redirects:
+        redirect_maps:
+            "playground/explain.md": "playground/json_editor.md"
+
 nav:
     - "<i class='fas fa-microscope'></i> Topics":
         - "Introduction": index.md
@@ -37,7 +42,6 @@ nav:
     - "<i class='fa fa-puzzle-piece'></i> Playground":
         - "Builder": playground/builder.md
         - "JSON Editor": playground/json_editor.md
-        - playground/explain.md
     - "<i class='fa fa-wrench'></i> Advanced":
         - rendering.md
         - schema.md

requirements.txt

@@ -1,4 +1,5 @@
 mkdocs
 mkdocs-cinder
+mkdocs-redirects
 git+https://github.com/bmcorser/fontawesome-markdown.git@master
 lxml

tools/md_extensions.py

@@ -103,14 +103,6 @@ def __init__(self, *, parent: etree.Element = None, download_file=None, width=No
             open_in_editor.append(etree_fontawesome("edit"))
             open_in_editor.attrib["title"] = "Open in Editor"
 
-            explain = etree.SubElement(element, "button")
-            explain.attrib["onclick"] = inspect.cleandoc(r"""
-                playground_set_url("{url}");
-                window.location.href = "/lottie-docs/playground/explain/";
-            """).format(url=absfile)
-            explain.append(etree_fontawesome("book-open"))
-            explain.attrib["title"] = "Explain"
-
         self.element = element
         self.variable_name = "lottie_player_{id}".format(id=self.id)
         self.target_id = "lottie_target_{id}".format(id=self.id)
@@ -478,14 +470,6 @@ def run(self, parent, blocks):
         open_in_editor.append(etree_fontawesome("edit"))
         open_in_editor.attrib["title"] = "Open in Editor"
 
-        explain = etree.SubElement(element, "button")
-        explain.attrib["onclick"] = inspect.cleandoc(r"""
-            playground_set_data(lottie_player_{id}.lottie);
-            window.location.href = "/lottie-docs/playground/explain/";
-        """).format(id=anim_id)
-        explain.append(etree_fontawesome("book-open"))
-        explain.attrib["title"] = "Explain"
-
         json_viewer_id = None
         json_viewer_path = None
         html_append_until = None