SeleniumLibrary/atest/resources/html/frames/draganddrop.html at fb7faa4ccdb6ca2740e9788ad841cf1d041654bd · robotframework/SeleniumLibrary · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Custom Mouse-Based Cross-Frame Drag Test (Fixed with Overlay)</title>
    <style>
        body { font-family: Arial, sans-serif; margin: 40px; background: #f0f0f0; position: relative; }
        #source {
            width: 150px; height: 150px; background: lightblue;
            text-align: center; line-height: 150px; font-size: 20px;
            cursor: pointer; user-select: none; position: absolute; top: 50px; left: 50px;
            z-index: 10;
        }
        #iframe-container { position: relative; display: inline-block; margin-top: 250px; }
        iframe { width: 800px; height: 500px; border: 3px solid #333; background: white; }
        #overlay {
            position: absolute; top: 0; left: 0; width: 100%; height: 100%;
            background: transparent; z-index: 20; display: none; cursor: default;
        }
        #target {
            width: 400px; height: 300px; background: lightgreen;
            margin: 100px auto; text-align: center; line-height: 300px; font-size: 28px;
            border: 4px dashed #000;
        }
    </style>
</head>
<body>

    <h2>Click & hold blue box (outside), drag ANYWHERE (including into green area inside iframe), release → drops!</h2>

    <!-- Source outside iframe -->
    <div id="source">Drag Me!<br>(outside iframe)</div>

    <!-- Iframe wrapper with overlay -->
    <div id="iframe-container">
        <iframe id="previewFrame" srcdoc="
            <html>
            <head>
                <style>
                    body { margin: 0; background: #fff; }
                    #target { width: 400px; height: 300px; background: lightgreen; margin: 100px auto; text-align: center; line-height: 300px; font-size: 28px; border: 4px dashed #000; }
                </style>
                <script>
                    window.addEventListener('message', function(e) {
                        if (e.data.action === 'drop') {
                            const target = document.getElementById('target');
                            const droppedBox = document.createElement('div');
                            droppedBox.innerHTML = 'Dropped Successfully!<br><br>Box from outside!';
                            droppedBox.style.cssText = 'width: 150px; height: 150px; background: lightblue; margin: 20px auto; line-height: 150px; font-size: 20px; text-align: center;';
                            target.innerHTML = '';
                            target.appendChild(droppedBox);
                        }
                    });
                </script>
            </head>
            <body>
                <div id='target'>Drop Here<br>(inside iframe)</div>
            </body>
            </html>
        "></iframe>
        <div id="overlay"></div>
    </div>

    <script>
        let dragging = false;
        const source = document.getElementById('source');
        const overlay = document.getElementById('overlay');
        const iframe = document.getElementById('previewFrame');

        // Start drag: show overlay to capture events over iframe
        source.addEventListener('mousedown', (e) => {
            dragging = true;
            overlay.style.display = 'block';
            e.preventDefault();
        });

        // End drag: hide overlay, hide source, send drop to iframe
        const endDrag = () => {
            if (dragging) {
                dragging = false;
                overlay.style.display = 'none';
                source.style.display = 'none';

                iframe.contentWindow.postMessage({
                    action: 'drop'
                }, '*');
            }
        };

        // Mouseup anywhere in parent (including overlay)
        document.addEventListener('mouseup', endDrag);
    </script>

</body>
</html>