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snapshotTab.tsx
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snapshotTab.tsx
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/**
* Copyright (c) Microsoft Corporation.
*
* 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 { ActionEntry } from '../../../cli/traceViewer/traceModel';
import { Boundaries, Size } from '../geometry';
import './snapshotTab.css';
import * as React from 'react';
import { msToString, useMeasure } from './helpers';
export const SnapshotTab: React.FunctionComponent<{
actionEntry: ActionEntry | undefined,
snapshotSize: Size,
selection: { pageId: string, time: number } | undefined,
boundaries: Boundaries,
}> = ({ actionEntry, snapshotSize, selection, boundaries }) => {
const [measure, ref] = useMeasure<HTMLDivElement>();
const [snapshotIndex, setSnapshotIndex] = React.useState(0);
let snapshots: { name: string, snapshotId?: string, snapshotTime?: number }[] = [];
snapshots = (actionEntry ? (actionEntry.action.snapshots || []) : []).slice();
if (actionEntry) {
if (!snapshots.length || snapshots[0].name !== 'before')
snapshots.unshift({ name: 'before', snapshotTime: actionEntry ? actionEntry.action.startTime : 0 });
if (snapshots[snapshots.length - 1].name !== 'after')
snapshots.push({ name: 'after', snapshotTime: actionEntry ? actionEntry.action.endTime : 0 });
}
const { pageId, time } = selection || { pageId: undefined, time: 0 };
const iframeRef = React.createRef<HTMLIFrameElement>();
React.useEffect(() => {
if (!iframeRef.current)
return;
// TODO: this logic is copied from SnapshotServer. Find a way to share.
let snapshotUrl = 'data:text/html,Snapshot is not available';
if (pageId) {
snapshotUrl = `/snapshot/pageId/${pageId}/timestamp/${time}/main`;
} else if (actionEntry) {
const snapshot = snapshots[snapshotIndex];
if (snapshot && snapshot.snapshotTime)
snapshotUrl = `/snapshot/pageId/${actionEntry.action.pageId!}/timestamp/${snapshot.snapshotTime}/main`;
else if (snapshot && snapshot.snapshotId)
snapshotUrl = `/snapshot/pageId/${actionEntry.action.pageId!}/snapshotId/${snapshot.snapshotId}/main`;
}
try {
(iframeRef.current.contentWindow as any).showSnapshot(snapshotUrl);
} catch (e) {
}
}, [actionEntry, snapshotIndex, pageId, time]);
const scale = Math.min(measure.width / snapshotSize.width, measure.height / snapshotSize.height);
return <div className='snapshot-tab'>
<div className='snapshot-controls'>{
selection && <div key='selectedTime' className='snapshot-toggle'>
{msToString(selection.time - boundaries.minimum)}
</div>
}{!selection && snapshots.map((snapshot, index) => {
return <div
key={snapshot.name}
className={'snapshot-toggle' + (snapshotIndex === index ? ' toggled' : '')}
onClick={() => setSnapshotIndex(index)}>
{snapshot.name}
</div>
})
}</div>
<div ref={ref} className='snapshot-wrapper'>
<div className='snapshot-container' style={{
width: snapshotSize.width + 'px',
height: snapshotSize.height + 'px',
transform: `translate(${-snapshotSize.width * (1 - scale) / 2}px, ${-snapshotSize.height * (1 - scale) / 2}px) scale(${scale})`,
}}>
<iframe ref={iframeRef} id='snapshot' name='snapshot' src='/snapshot/'></iframe>
</div>
</div>
</div>;
};