webview2runtime's Introduction

WebView2Runtime

This package provides the following capabilities for managing and installing the WebView2 runtime:

Retrieve version of installed WebView2 runtime
Determine if the installed version is older than the required version
Download and run the official Microsoft Bootstrapper
Run an embedded version of the official Microsoft Bootstrapper
Open a browser to the WebView2 download page
Utility methods for user notifications and confirmations

Usage

The general workflow should be:

Check if there's a version installed using GetInstalledVersion()
If so, check it's new enough to support your application using IsOlderThan()
Decide what strategy you're comfortable with to inform the user / install the runtime.

Documentation

Please consult the package documentation.

Example

package mypackage

import "github.com/leaanthony/webview2runtime"

func BootstrapRuntime() error {
    var err error
    shouldInstall := true
    message := "The WebView2 runtime is required. Press Ok to install."
    installedVersion := webview2runtime.GetInstalledVersion()
    if installedVersion != nil {
        shouldInstall, err = installedVersion.IsOlderThan("90.0.818.66")
        if err != nil {
            _ = webview2runtime.Error(err.Error(), "Error")
            return err
        }
        if shouldInstall {
            message = "The WebView2 runtime needs updating. Press Ok to install."
        }
    }
    if shouldInstall {
        confirmed, err := webview2runtime.Confirm(message, "Missing Requirements")
        if err != nil {
            return err
        }
        if confirmed {
            installedCorrectly, err := webview2runtime.InstallUsingBootstrapper()
            if err != nil {
                _ = webview2runtime.Error(err.Error(), "Error")
                return err
            }
            if !installedCorrectly {
                err = webview2runtime.Error("The runtime failed to install correctly. Please try again.", "Error")
                return err
            }
        }
    }
    return nil
}

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