72 lines
4.1 KiB
HTML
72 lines
4.1 KiB
HTML
<!doctype html>
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<html lang="de">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Styleguide – Pattern Datei-Upload</title>
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<link rel="stylesheet" href="../styleguide.css">
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</head>
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<body>
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<h1 class="sg-main-heading">Pattern – Datei-Upload</h1>
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<section id="pattern-file-upload">
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<p class="sg-preview-label">Pattern: Datei-Upload</p>
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<form class="sg-file-upload" data-pattern="file-upload" action="#" method="post">
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<div class="sg-file-upload__dropzone sg-labeled-input-row" data-drag-over="false">
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<label class="sg-label" for="file-upload-input">Datei auswählen</label>
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<input class="sg-file-input__control" id="file-upload-input" name="documents" type="file" multiple aria-describedby="file-upload-status">
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<button class="sg-interaction-element sg-button sg-button--active sg-file-upload__trigger" type="button">Dateien auswählen</button>
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</div>
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<p class="sg-body sg-file-upload__status" id="file-upload-status" aria-live="polite">Noch keine Dateien ausgewählt.</p>
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<ul class="sg-file-upload__files" aria-label="Ausgewählte Dateien"></ul>
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<button class="sg-interaction-element sg-button sg-button--process sg-button--process-inactive sg-file-upload__submit" type="submit" disabled aria-disabled="true">Hochladen</button>
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</form>
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</section>
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<script>
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(() => {
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const upload = document.querySelector('[data-pattern="file-upload"]');
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if (!upload) return;
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const input = upload.querySelector('#file-upload-input');
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const dropzone = upload.querySelector('.sg-file-upload__dropzone');
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const trigger = upload.querySelector('.sg-file-upload__trigger');
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const filesList = upload.querySelector('.sg-file-upload__files');
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const status = upload.querySelector('.sg-file-upload__status');
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const submit = upload.querySelector('[type="submit"]');
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let selectedFiles = [];
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const formatSize = (bytes) => bytes < 1024 * 1024 ? `${Math.max(1, Math.round(bytes / 1024))} KB` : `${(bytes / (1024 * 1024)).toFixed(1)} MB`;
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const render = () => {
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filesList.innerHTML = '';
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selectedFiles.forEach((file, index) => {
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const item = document.createElement('li');
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item.className = 'sg-file-upload__file';
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const name = document.createElement('span');
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name.className = 'sg-file-upload__file-name';
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name.textContent = file.name;
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const meta = document.createElement('span');
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meta.className = 'sg-file-upload__file-meta';
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meta.textContent = ` · ${formatSize(file.size)}`;
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name.append(meta);
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const remove = document.createElement('button');
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remove.className = 'sg-interaction-element sg-button sg-button--active sg-file-upload__remove';
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remove.type = 'button';
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remove.textContent = 'Entfernen';
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remove.addEventListener('click', () => { selectedFiles.splice(index, 1); render(); });
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item.append(name, remove);
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filesList.append(item);
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});
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const count = selectedFiles.length;
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status.textContent = count === 0 ? 'Noch keine Dateien ausgewählt.' : `${count} Datei${count === 1 ? '' : 'en'} ausgewählt.`;
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submit.disabled = count === 0;
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submit.setAttribute('aria-disabled', String(count === 0));
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submit.classList.toggle('sg-button--process-inactive', count === 0);
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};
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trigger.addEventListener('click', () => input.click());
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input.addEventListener('change', () => { selectedFiles = [...selectedFiles, ...Array.from(input.files)]; input.value = ''; render(); });
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['dragenter', 'dragover'].forEach((eventName) => dropzone.addEventListener(eventName, (event) => { event.preventDefault(); dropzone.dataset.dragOver = 'true'; }));
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['dragleave', 'drop'].forEach((eventName) => dropzone.addEventListener(eventName, (event) => { event.preventDefault(); dropzone.dataset.dragOver = 'false'; }));
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dropzone.addEventListener('drop', (event) => { selectedFiles = [...selectedFiles, ...Array.from(event.dataTransfer.files)]; render(); });
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render();
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})();
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</script>
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</body>
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</html>
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