ui/src/components/widgets/slice.ts

// Copyright (C) 2024 The Android Open Source Project
//
// 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.

import m from 'mithril';
import {asSliceSqlId} from '../sql_utils/core_types';
import type {Trace} from '../../public/trace';
import {getSlice, type SliceDetails} from '../sql_utils/slice';
import {
  createSqlIdRefRenderer,
  sqlIdRegistry,
} from './sql/details/sql_ref_renderer_registry';
import {TrackEventRef} from './track_event_ref';

export function sliceRef(
  trace: Trace,
  slice: SliceDetails,
  name?: string,
): m.Child {
  return m(TrackEventRef, {
    trace,
    table: 'slice',
    id: slice.id,
    name: name ?? slice.name ?? '[null]',
  });
}

sqlIdRegistry['slice'] = createSqlIdRefRenderer<{
  slice: SliceDetails | undefined;
  id: bigint;
}>(
  async (engine, id) => {
    return {
      id,
      slice: await getSlice(engine, asSliceSqlId(Number(id))),
    };
  },
  (trace, {id, slice}) => ({
    value: slice !== undefined ? sliceRef(trace, slice) : `Unknown slice ${id}`,
  }),
);