refactor(PageController): mv dom and actions

This commit is contained in:
Simon
2025-12-02 21:30:39 +08:00
parent 51f81fc44c
commit ad19a26a57
5 changed files with 0 additions and 0 deletions

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/**
* Copyright (C) 2025 Alibaba Group Holding Limited
* All rights reserved.
*/
import type { PageAgent } from '../PageAgent'
// ======= general utils =======
export async function waitFor(seconds: number): Promise<void> {
await new Promise((resolve) => setTimeout(resolve, seconds * 1000))
}
let currentUrl = window.location.href
export async function getSystemInfo() {
// If current URL is already up to date, no need to add message
if (currentUrl === window.location.href) return ''
await waitFor(0.3) // Wait a bit longer for page to load
currentUrl = window.location.href
return `\n<sys> Current URL changed to: ${currentUrl} </sys>`
}
// ======= dom utils =======
export async function movePointerToElement(element: HTMLElement) {
const rect = element.getBoundingClientRect()
const x = rect.left + rect.width / 2
const y = rect.top + rect.height / 2
window.dispatchEvent(new CustomEvent('PageAgent::MovePointerTo', { detail: { x, y } }))
await waitFor(0.3)
}
/**
* Get the HTMLElement by index from the selectorMap in PageAgent.
*/
export function getElementByIndex(pageAgent: PageAgent, index: number): HTMLElement {
const interactiveNode = pageAgent.selectorMap.get(index)
if (!interactiveNode) {
throw new Error(`No interactive element found at index ${index}`)
}
const element = interactiveNode.ref
if (!element) {
throw new Error(`Element at index ${index} does not have a reference`)
}
if (!(element instanceof HTMLElement)) {
throw new Error(`Element at index ${index} is not an HTMLElement`)
}
return element
}
let lastClickedElement: HTMLElement | null = null
function blurLastClickedElement() {
if (lastClickedElement) {
lastClickedElement.blur()
lastClickedElement.dispatchEvent(
new MouseEvent('mouseout', { bubbles: true, cancelable: true })
)
lastClickedElement = null
}
}
/**
* Simulate a click on the element
*/
export async function clickElement(element: HTMLElement) {
blurLastClickedElement()
lastClickedElement = element
await scrollIntoViewIfNeeded(element)
await movePointerToElement(element)
window.dispatchEvent(new CustomEvent('PageAgent::ClickPointer'))
await waitFor(0.1)
// hover it
element.dispatchEvent(new MouseEvent('mouseenter', { bubbles: true, cancelable: true }))
element.dispatchEvent(new MouseEvent('mouseover', { bubbles: true, cancelable: true }))
// dispatch a sequence of events to ensure all listeners are triggered
element.dispatchEvent(new MouseEvent('mousedown', { bubbles: true, cancelable: true }))
// focus it to ensure it gets the click event
element.focus()
element.dispatchEvent(new MouseEvent('mouseup', { bubbles: true, cancelable: true }))
element.dispatchEvent(new MouseEvent('click', { bubbles: true, cancelable: true }))
// dispatch a click event
// element.click()
await waitFor(0.1) // Wait to ensure click event processing completes
}
// eslint-disable-next-line @typescript-eslint/unbound-method
const nativeInputValueSetter = Object.getOwnPropertyDescriptor(
window.HTMLInputElement.prototype,
'value'
)!.set!
// eslint-disable-next-line @typescript-eslint/unbound-method
const nativeTextAreaValueSetter = Object.getOwnPropertyDescriptor(
window.HTMLTextAreaElement.prototype,
'value'
)!.set!
/**
* create a synthetic keyboard event
* with key keycode code
*/
export async function createSyntheticInputEvent(elem: HTMLElement, key: string) {
elem.dispatchEvent(new KeyboardEvent('keydown', { bubbles: true, cancelable: true, key }))
await waitFor(0.01)
if (elem instanceof HTMLInputElement || elem instanceof HTMLTextAreaElement) {
elem.dispatchEvent(new Event('beforeinput', { bubbles: true }))
await waitFor(0.01)
elem.dispatchEvent(new Event('input', { bubbles: true }))
await waitFor(0.01)
}
elem.dispatchEvent(new KeyboardEvent('keyup', { bubbles: true, cancelable: true, key }))
}
export async function inputTextElement(element: HTMLElement, text: string) {
if (!(element instanceof HTMLInputElement || element instanceof HTMLTextAreaElement)) {
throw new Error('Element is not an input or textarea')
}
await clickElement(element)
if (element instanceof HTMLTextAreaElement) {
nativeTextAreaValueSetter.call(element, text)
} else {
nativeInputValueSetter.call(element, text)
}
const inputEvent = new Event('input', { bubbles: true })
element.dispatchEvent(inputEvent)
await waitFor(0.1) // Wait to ensure input event processing completes
blurLastClickedElement()
}
/**
* @todo browser-use version is very complex and supports menu tags, need to follow up
*/
export async function selectOptionElement(selectElement: HTMLSelectElement, optionText: string) {
if (!(selectElement instanceof HTMLSelectElement)) {
throw new Error('Element is not a select element')
}
const options = Array.from(selectElement.options)
const option = options.find((opt) => opt.textContent?.trim() === optionText.trim())
if (!option) {
throw new Error(`Option with text "${optionText}" not found in select element`)
}
selectElement.value = option.value
selectElement.dispatchEvent(new Event('change', { bubbles: true }))
await waitFor(0.1) // Wait to ensure change event processing completes
}
// eslint-disable-next-line @typescript-eslint/require-await
export async function scrollIntoViewIfNeeded(element: HTMLElement) {
const el = element as any
if (el.scrollIntoViewIfNeeded) {
el.scrollIntoViewIfNeeded()
// await waitFor(0.5) // Animation playback
} else {
// @todo visibility check
el.scrollIntoView({ behavior: 'auto', block: 'center', inline: 'nearest' })
// await waitFor(0.5) // Animation playback
}
}
export async function scrollVertically(
down: boolean,
scroll_amount: number,
element?: HTMLElement | null
) {
// Element-specific scrolling if element is provided
if (element) {
const targetElement = element
console.log(
'[SCROLL DEBUG] Starting direct container scroll for element:',
targetElement.tagName
)
let currentElement = targetElement as HTMLElement | null
let scrollSuccess = false
let scrolledElement: HTMLElement | null = null
let scrollDelta = 0
let attempts = 0
const dy = scroll_amount
while (currentElement && attempts < 10) {
const computedStyle = window.getComputedStyle(currentElement)
const hasScrollableY = /(auto|scroll|overlay)/.test(computedStyle.overflowY)
const canScrollVertically = currentElement.scrollHeight > currentElement.clientHeight
console.log(
'[SCROLL DEBUG] Checking element:',
currentElement.tagName,
'hasScrollableY:',
hasScrollableY,
'canScrollVertically:',
canScrollVertically,
'scrollHeight:',
currentElement.scrollHeight,
'clientHeight:',
currentElement.clientHeight
)
if (hasScrollableY && canScrollVertically) {
const beforeScroll = currentElement.scrollTop
const maxScroll = currentElement.scrollHeight - currentElement.clientHeight
let scrollAmount = dy / 3
if (scrollAmount > 0) {
scrollAmount = Math.min(scrollAmount, maxScroll - beforeScroll)
} else {
scrollAmount = Math.max(scrollAmount, -beforeScroll)
}
currentElement.scrollTop = beforeScroll + scrollAmount
const afterScroll = currentElement.scrollTop
const actualScrollDelta = afterScroll - beforeScroll
console.log(
'[SCROLL DEBUG] Scroll attempt:',
currentElement.tagName,
'before:',
beforeScroll,
'after:',
afterScroll,
'delta:',
actualScrollDelta
)
if (Math.abs(actualScrollDelta) > 0.5) {
scrollSuccess = true
scrolledElement = currentElement
scrollDelta = actualScrollDelta
console.log(
'[SCROLL DEBUG] Successfully scrolled container:',
currentElement.tagName,
'delta:',
actualScrollDelta
)
break
}
}
if (currentElement === document.body || currentElement === document.documentElement) {
break
}
currentElement = currentElement.parentElement
attempts++
}
if (scrollSuccess) {
return `Scrolled container (${scrolledElement?.tagName}) by ${scrollDelta}px`
} else {
return `No scrollable container found for element (${targetElement.tagName})`
}
}
// Page-level scrolling (default or fallback)
const dy = scroll_amount
const bigEnough = (el: HTMLElement) => el.clientHeight >= window.innerHeight * 0.5
const canScroll = (el: HTMLElement | null) =>
el &&
/(auto|scroll|overlay)/.test(getComputedStyle(el).overflowY) &&
el.scrollHeight > el.clientHeight &&
bigEnough(el)
let el: HTMLElement | null = document.activeElement as HTMLElement | null
while (el && !canScroll(el) && el !== document.body) el = el.parentElement
el = canScroll(el)
? el
: Array.from(document.querySelectorAll<HTMLElement>('*')).find(canScroll) ||
(document.scrollingElement as HTMLElement) ||
(document.documentElement as HTMLElement)
if (el === document.scrollingElement || el === document.documentElement || el === document.body) {
window.scrollBy(0, dy)
return `✅ Scrolled page by ${dy}px.`
} else {
el!.scrollBy({ top: dy, behavior: 'smooth' })
await waitFor(0.1) // Animation playback
return `✅ Scrolled container (${el!.tagName}) by ${dy}px.`
}
}
export async function scrollHorizontally(
right: boolean,
scroll_amount: number,
element?: HTMLElement | null
) {
// Element-specific scrolling if element is provided
if (element) {
const targetElement = element
console.log(
'[SCROLL DEBUG] Starting direct container scroll for element:',
targetElement.tagName
)
let currentElement = targetElement as HTMLElement | null
let scrollSuccess = false
let scrolledElement: HTMLElement | null = null
let scrollDelta = 0
let attempts = 0
const dx = right ? scroll_amount : -scroll_amount
while (currentElement && attempts < 10) {
const computedStyle = window.getComputedStyle(currentElement)
const hasScrollableX = /(auto|scroll|overlay)/.test(computedStyle.overflowX)
const canScrollHorizontally = currentElement.scrollWidth > currentElement.clientWidth
console.log(
'[SCROLL DEBUG] Checking element:',
currentElement.tagName,
'hasScrollableX:',
hasScrollableX,
'canScrollHorizontally:',
canScrollHorizontally,
'scrollWidth:',
currentElement.scrollWidth,
'clientWidth:',
currentElement.clientWidth
)
if (hasScrollableX && canScrollHorizontally) {
const beforeScroll = currentElement.scrollLeft
const maxScroll = currentElement.scrollWidth - currentElement.clientWidth
let scrollAmount = dx / 3
if (scrollAmount > 0) {
scrollAmount = Math.min(scrollAmount, maxScroll - beforeScroll)
} else {
scrollAmount = Math.max(scrollAmount, -beforeScroll)
}
currentElement.scrollLeft = beforeScroll + scrollAmount
const afterScroll = currentElement.scrollLeft
const actualScrollDelta = afterScroll - beforeScroll
console.log(
'[SCROLL DEBUG] Scroll attempt:',
currentElement.tagName,
'before:',
beforeScroll,
'after:',
afterScroll,
'delta:',
actualScrollDelta
)
if (Math.abs(actualScrollDelta) > 0.5) {
scrollSuccess = true
scrolledElement = currentElement
scrollDelta = actualScrollDelta
console.log(
'[SCROLL DEBUG] Successfully scrolled container:',
currentElement.tagName,
'delta:',
actualScrollDelta
)
break
}
}
if (currentElement === document.body || currentElement === document.documentElement) {
break
}
currentElement = currentElement.parentElement
attempts++
}
if (scrollSuccess) {
return `Scrolled container (${scrolledElement?.tagName}) horizontally by ${scrollDelta}px`
} else {
return `No horizontally scrollable container found for element (${targetElement.tagName})`
}
}
// Page-level scrolling (default or fallback)
const dx = right ? scroll_amount : -scroll_amount
const bigEnough = (el: HTMLElement) => el.clientWidth >= window.innerWidth * 0.5
const canScroll = (el: HTMLElement | null) =>
el &&
/(auto|scroll|overlay)/.test(getComputedStyle(el).overflowX) &&
el.scrollWidth > el.clientWidth &&
bigEnough(el)
let el: HTMLElement | null = document.activeElement as HTMLElement | null
while (el && !canScroll(el) && el !== document.body) el = el.parentElement
el = canScroll(el)
? el
: Array.from(document.querySelectorAll<HTMLElement>('*')).find(canScroll) ||
(document.scrollingElement as HTMLElement) ||
(document.documentElement as HTMLElement)
if (el === document.scrollingElement || el === document.documentElement || el === document.body) {
window.scrollBy(dx, 0)
return `✅ Scrolled page horizontally by ${dx}px`
} else {
el!.scrollBy({ left: dx, behavior: 'smooth' })
await waitFor(0.1) // Animation playback
return `✅ Scrolled container (${el!.tagName}) horizontally by ${dx}px`
}
}