1/*
2 * Copyright (C) 2023 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *     http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17import {VariableHeightScrollStrategy} from 'viewers/common/variable_height_scroll_strategy';
18import {TransactionsEntry} from 'viewers/viewer_transactions/ui_data';
19
20export class TransactionsScrollStrategy extends VariableHeightScrollStrategy {
21  protected readonly defaultRowSize = 24;
22  private readonly flagCharsPerRow = 40;
23  private readonly timestampCharsPerRow = 20;
24
25  protected override predictScrollItemHeight(entry: TransactionsEntry): number {
26    const flagsHeight = this.subItemHeight(
27      entry.fields[6].value as string,
28      this.flagCharsPerRow,
29    );
30    const timestampHeight = this.subItemHeight(
31      entry.traceEntry.getTimestamp().format(),
32      this.timestampCharsPerRow,
33    );
34    return Math.max(flagsHeight, timestampHeight);
35  }
36}
37