[js][bidi]: implement bidi getClientWindows command in browser module

[navin772]

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Motivation and Context

Implemented getClientWindows method in JavaScript for BiDi browser module and added a test.

BiDi spec - https://w3c.github.io/webdriver-bidi/#command-browser-getClientWindows

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• I have read the contributing document.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

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PR Type

Enhancement, Tests

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Description

• Implemented getClientWindows command in the BiDi browser module.

• Added ClientWindowInfo class to represent client window details.

• Introduced tests for getClientWindows functionality in the BiDi browser.

• Enhanced BiDi browser module with window state constants.

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Changes walkthrough 📝

	Relevant files
Enhancement	browser.js Add `getClientWindows` method to BiDi browser                        javascript/node/selenium-webdriver/bidi/browser.js Added getClientWindows method to fetch client window details. Imported WindowState and ClientWindowInfo for window handling. Updated module exports to include WindowState. +17/-0    clientWindowInfo.js Introduce `ClientWindowInfo` class and `WindowState` constants javascript/node/selenium-webdriver/bidi/clientWindowInfo.js Created ClientWindowInfo class for client window representation. Defined WindowState constants for window states. Added fromJson method for JSON deserialization. +54/-0
Tests	browser_test.js Add tests for `getClientWindows` in BiDi browser                  javascript/node/selenium-webdriver/test/bidi/browser_test.js Added test suite for getClientWindows functionality. Validated client window properties and states in tests. Ensured compatibility with multiple browsers. +28/-8

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PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

⏱️ Estimated effort to review: 2 🔵🔵⚪⚪⚪

🧪 PR contains tests

🔒 No security concerns identified

⚡ Recommended focus areas for review Input Validation The constructor accepts parameters without any type checking or validation. Missing validation for required fields and value ranges could lead to runtime errors. constructor({ clientWindow, state, width, height, x, y, active }) { this.clientWindow = clientWindow this.state = state this.width = width this.height = height this.x = x this.y = y this.active = active } Error Handling The getClientWindows method does not include error handling for failed responses from the BiDi protocol. Should handle potential error cases. async getClientWindows() { const command = { method: 'browser.getClientWindows', params: {}, } const response = await this.bidi.send(command) return response.result.clientWindows.map((window) => ClientWindowInfo.fromJson(window)) }

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PR Code Suggestions ✨

Explore these optional code suggestions:

Category	Suggestion	Impact
Possible issue	Validate window state during initialization Add validation to ensure the window state is a valid value from WindowState enum during object construction to prevent invalid states. javascript/node/selenium-webdriver/bidi/clientWindowInfo.js [36-44] constructor({ clientWindow, state, width, height, x, y, active }) { + if (!Object.values(WindowState).includes(state)) { + throw new Error(`Invalid window state: ${state}`) + } this.clientWindow = clientWindow this.state = state this.width = width this.height = height this.x = x this.y = y this.active = active } Apply this suggestion Suggestion importance[1-10]: 8 __ Why: The suggestion adds crucial validation to prevent invalid window states, which could cause runtime errors. This is particularly important as the WindowState is used throughout the application and invalid states could lead to unexpected behavior.	Medium
	Validate numeric window parameters Add type checking for numeric parameters to ensure valid window dimensions and coordinates. javascript/node/selenium-webdriver/bidi/clientWindowInfo.js [36-44] constructor({ clientWindow, state, width, height, x, y, active }) { + if (!Number.isFinite(width) || !Number.isFinite(height) || !Number.isFinite(x) || !Number.isFinite(y)) { + throw new Error('Window dimensions and coordinates must be valid numbers') + } this.clientWindow = clientWindow this.state = state this.width = width this.height = height this.x = x this.y = y this.active = active } Apply this suggestion Suggestion importance[1-10]: 7 __ Why: Adding type validation for numeric parameters is important for preventing invalid window dimensions and coordinates, which could cause rendering issues or crashes. The suggestion uses appropriate Number.isFinite() checks.	Medium
Learned best practice	Add parameter validation to ensure all required object properties are provided before using them Add parameter validation in the ClientWindowInfo constructor to ensure all required window information parameters are provided before using them. This prevents potential undefined property access errors. javascript/node/selenium-webdriver/bidi/clientWindowInfo.js [36-44] constructor({ clientWindow, state, width, height, x, y, active }) { + if (!clientWindow || !state || width == null || height == null || x == null || y == null || active == null) { + throw new Error('Missing required window information parameters') + } this.clientWindow = clientWindow this.state = state this.width = width this.height = height this.x = x this.y = y this.active = active } Apply this suggestion	Low