WebView2Samples/SampleApps/WebView2APISample/assets/SecnarioFileTypePolicy.html at 3b0e45b21c4c5f9eb9a31c1efe72a1c033d35357 · MicrosoftEdge/WebView2Samples · GitHub

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<!DOCTYPE html>
<html>
<head>
    <title>ScenarioFileTypePolicy</title>
    <script>
        document.addEventListener('DOMContentLoaded', () => {
            async function saveFile() {
                let ext = document.getElementById("extensionText");
                // Show the save file picker
                const newHandle = await window.showSaveFilePicker({suggestedName:`sample_file.${ext.value}`});

                // Write the content to the selected file
                const writable = await newHandle.createWritable();
                await writable.write("sample sentence");
                await writable.close();
            }
            document.getElementById('showSaveFilePickerButton').addEventListener('click', saveFile);
        });
        function enable_smartscreen() {
            window.chrome.webview.postMessage("enable_smartscreen");
        }
        function disable_smartscreen() {
            window.chrome.webview.postMessage("disable_smartscreen");
        }
        function allow_exe() {
            window.chrome.webview.postMessage("allow_exe");
        }
        function block_exe() {
            window.chrome.webview.postMessage("block_exe");
        }
        function clear_exe_policy() {
            window.chrome.webview.postMessage("clear_exe_policy");
        }

    </script>
</head>
<body>
    <h1>File Type Policy API Demo Page</h1>
    <p>Two customized example rules in this demo:</p>
    <p>1. Smoothly save *.eml file without file extension warning</p>
    <p>2. Intentionally block save *.iso file</p>
    <p>3. Block or bypass *.exe file based on configuration</p>
    <p>4. Block or bypass *.exe file based on popup response</p>
    <p>
        <button onclick="allow_exe()">Allow exe</button>
    </p>
    <p>
        <button onclick="block_exe()">Block exe</button>
    </p>
    <p>
        <button onclick="clear_exe_policy()">Clear exe policy</button>
    </p>
    <h2>File Type Policy API for Save File</h2>
    <p>
        Please enter a file extension: <input type="text" id="extensionText" placeholder="try eml or iso" />
        <button id="showSaveFilePickerButton">save</button>
    </p>
    <br>
    <hr />
    <h2>File Type Policy API for download</h2>

    <br />
    <button onclick="enable_smartscreen()">Enable Smartscreen</button>
    <br />
    <br />
    <button onclick="disable_smartscreen()">Disable Smartscreen</button>
    <br />
    <a href="https://appassets.example/sample.exe" id="download_exe" download>Download exe file</a>
    <br />
    <a href="https://appassets.example/sample.emlx" id="download_emlx" download>Download emlx file</a>

</body>
</html>