[gi-docgen/derived-implements: 2/5] generate: List the interface implementations

[Emmanuele Bassi <ebassi src gnome org>]

commit 9be7bfe9d2fbd02d58675612b785576e133a9b42
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Mon Oct 18 00:14:48 2021 +0100

    generate: List the interface implementations
    
    The interface page should list the implementations available in a class.
    
    The list can be arbitrarily long, so let's collapse the section by
    default.
    
    Fixes: #104

 gidocgen/gdgenerate.py                  |  8 ++++++++
 gidocgen/templates/basic/interface.html | 13 +++++++++++++
 2 files changed, 21 insertions(+)
---
diff --git a/gidocgen/gdgenerate.py b/gidocgen/gdgenerate.py
index a4f0a6e..2db23ad 100644
--- a/gidocgen/gdgenerate.py
+++ b/gidocgen/gdgenerate.py
@@ -1227,6 +1227,14 @@ class TemplateInterface:
                 if not config.is_hidden(interface.name, "function", func.name):
                     self.type_funcs.append(gen_index_func(func, namespace, md))
 
+        if len(interface.implementations) != 0:
+            self.implementations = []
+            for impl in interface.implementations:
+                self.implementations.append({
+                    'name': impl.name,
+                    'ctype': impl.ctype,
+                })
+
     @property
     def c_decl(self):
         return f"interface {self.fqtn} : {self.requires_fqtn}"
diff --git a/gidocgen/templates/basic/interface.html b/gidocgen/templates/basic/interface.html
index 1039039..d895306 100644
--- a/gidocgen/templates/basic/interface.html
+++ b/gidocgen/templates/basic/interface.html
@@ -135,6 +135,19 @@ SPDX-License-Identifier: Apache-2.0 OR GPL-3.0-or-later
       </div>
     </div>
 
+    {% if interface.implementations %}
+    <div class="implementations toggle-wrapper default-hide">
+      <h4 id="implementations">Implementations<a href="#implementations" class="anchor"></a></h4>
+      <div class="docblock">
+        <ul>
+        {%- for impl in interface.implementations %}
+          <li><a href="iface.{{ impl.name }}.html">{{ impl.ctype }}</a></li>
+        {% endfor -%}
+        </ul>
+      </div>
+    </div>
+    {% endif %}
+
     {% if interface.type_funcs %}
     <div class="methods toggle-wrapper">
       <h4 id="type-functions">