Increase Gemini chat width

Increase Gemini chat box width to 100%

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         Increase Gemini chat width
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  Increase Gemini chat box width to 100%
// @author       ȼaptain-jøhn-søap-mactavish
// @license      CC-BY-NC-SA-4.0
// @match        https://gemini.google.com/*
// @icon         data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
// @grant        none
// ==/UserScript==
(
    function()
    {
        'use strict';

        // Convenience function to execute your callback only after an element matching readySelector has been added to the page.
        function runWhenReady
        (
        ReadySelector,
         Callback
        )
        {
            var NumAttempts=0;

            var TryNow=function()
            {
                var Elem=document.querySelector(ReadySelector);

                if(Elem)
                {
                    Callback(Elem);
                }
                else
                {
                    NumAttempts++;

                    if(NumAttempts>=34)
                    {
                        console.warn(`Width script: giving up after 34 attempts. Could not find: ${ReadySelector}`);
                    }
                    else
                    {
                        setTimeout
                        (
                            TryNow,
                            250*Math.pow(1.1,NumAttempts)
                        );
                    }
                }
            };

            TryNow();
        }

        // Function to apply width adjustment to the elements returned by the getElementsCallback
        function applyWidth
        (
        GetElementsCallback
        )
        {
            const Elements=GetElementsCallback();

            for(let i=0;i<Elements.length;i++)
            {
                Elements[i].style.setProperty('max-width','100%','important');
            }
        }

        // Generic function to observe mutations and apply width adjustments
        function observeMutations
        (
        GetElementsCallback
        )
        {
            const Observer=new MutationObserver
            (
                function(Mutations)
                {
                    let EventRegistrationCount=0;

                    Mutations.forEach
                    (
                        function(Mutation)
                        {
                            if(Mutation.type==='childList')
                            {
                                EventRegistrationCount++;
                            }
                        }
                    );

                    if(EventRegistrationCount>0)
                    {
                        applyWidth(GetElementsCallback);
                    }
                }
            );

            Observer.observe
            (
                document.documentElement,
                {
                    childList: true,
                    subtree: true
                }
            );
        }

        // Check the domain and apply the corresponding logic
        const Hostname=window.location.hostname;

        if(Hostname === 'gemini.google.com')
        {
            const GetElements = () => document.querySelectorAll('.conversation-container, .input-area-container, .ng-star-inserted');

            runWhenReady
            (
                '.conversation-container, .input-area-container, .ng-star-inserted',
                function()
                {
                    applyWidth(GetElements);
                    observeMutations(GetElements);
                }
            );
        }
    }
)();