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Snapshot feature #117

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30 changes: 30 additions & 0 deletions packages/app/src/components/browser/snapshot.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@ import { consume } from '@lit/context'
import { type ComponentChildren, h, render, type VNode } from 'preact'
import { customElement, query } from 'lit/decorators.js'
import type { SimplifiedVNode } from '../../../../script/types'
import type { CommandLog } from '@wdio/devtools-service/types'

import {
mutationContext,
Expand Down Expand Up @@ -101,6 +102,10 @@ export class DevtoolsBrowser extends Element {
window.addEventListener('app-mutation-select', (ev) =>
this.#renderBrowserState(ev.detail)
)
window.addEventListener(
'show-command',
this.#handleShowCommand as EventListener
)
await this.updateComplete
}

Expand Down Expand Up @@ -134,6 +139,31 @@ export class DevtoolsBrowser extends Element {
this.iframe.style.transform = `scale(${scale})`
}

#handleShowCommand = (event: Event) =>
this.#renderCommandScreenshot(
(event as CustomEvent<{ command?: CommandLog }>).detail?.command
)

async #renderCommandScreenshot(command?: CommandLog) {
const screenshot = command?.screenshot
if (!screenshot) {
return
}

if (!this.iframe) {
await this.updateComplete
}
if (!this.iframe) {
return
}

this.iframe.srcdoc = `
<body style="margin:0;background:#111;display:flex;justify-content:center;align-items:flex-start;">
<img src="data:image/png;base64,${screenshot}" style="max-width:100%;height:auto;display:block;" />
</body>
`
}

async #renderNewDocument(doc: SimplifiedVNode, baseUrl: string) {
const root = transform(doc)
const baseTag = h('base', { href: baseUrl })
Expand Down
5 changes: 5 additions & 0 deletions packages/service/src/session.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -102,6 +102,11 @@ export class SessionCapturer {
timestamp,
callSource: absPath
}
try {
newCommand.screenshot = await browser.takeScreenshot()
} catch (shotErr) {
log.warn(`failed to capture screenshot: ${(shotErr as Error).message}`)
}
this.commandsLog.push(newCommand)
this.sendUpstream('commands', [newCommand])

Expand Down
1 change: 1 addition & 0 deletions packages/service/src/types.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,7 @@ export interface CommandLog {
error?: Error
timestamp: number
callSource: string
screenshot?: string
}

export enum TraceType {
Expand Down