Merge pull request #3079 from aftersomemath:sysid-pr

PiperOrigin-RevId: 868229512
Change-Id: I790bc08fc8b0745583a2f92d9ee2c5a19ba558ea

python/mujoco/sysid/report/sections/base.py

@@ -0,0 +1,63 @@
+# Copyright 2026 DeepMind Technologies Limited
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ==============================================================================
+"""Abstract base class for report sections."""
+
+import abc
+from collections.abc import Iterable
+from typing import Any
+
+
+class ReportSection(abc.ABC):
+  """Abstract base class for all report sections."""
+
+  @property
+  @abc.abstractmethod
+  def template_filename(self) -> str:
+    """The filename of the Jinja2 template (e.g., 'parameters.html')."""
+    pass
+
+  @abc.abstractmethod
+  def get_context(self) -> dict[str, Any]:
+    """Returns data needed by the template."""
+    pass
+
+  def __init__(self, collapsible: bool = True, is_open: bool = True):
+    self._collapsible = collapsible
+    self._is_open = is_open
+    self._anchor = ""
+
+  @property
+  def title(self) -> str:
+    return ""
+
+  @property
+  def anchor(self) -> str:
+    """Returns a unique HTML anchor string."""
+    # Auto-generate a safe anchor from title if not provided
+    if not hasattr(self, "_anchor") or not self._anchor:
+      return self.title.lower().replace(" ", "-")
+    return self._anchor
+
+  @property
+  def collapsible(self) -> bool:
+    return self._collapsible
+
+  @property
+  def is_open(self) -> bool:
+    return self._is_open
+
+  def header_includes(self) -> Iterable[str]:
+    """Returns strings (like <script> tags) to add to <head>."""
+    return set()