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296
src/components/manifest/PdfViewerPanel.jsx
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296
src/components/manifest/PdfViewerPanel.jsx
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import { PureComponent } from 'react';
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import Box from '@mui/material/Box';
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import Button from '@mui/material/Button';
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import CircularProgress from '@mui/material/CircularProgress';
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import IconButton from '@mui/material/IconButton';
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import Typography from '@mui/material/Typography';
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import Tooltip from '@mui/material/Tooltip';
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import CloseIcon from '@mui/icons-material/Close';
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import PictureAsPdfIcon from '@mui/icons-material/PictureAsPdf';
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import OpenInNewIcon from '@mui/icons-material/OpenInNew';
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import DownloadOutlinedIcon from '@mui/icons-material/DownloadOutlined';
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import VerticalAlignTopIcon from '@mui/icons-material/VerticalAlignTop';
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import VerticalAlignBottomIcon from '@mui/icons-material/VerticalAlignBottom';
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import ViewSidebarIcon from '@mui/icons-material/ViewSidebar';
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import { enqueueSnackbar } from 'notistack';
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import { PanelTile } from 'dashgui/panels';
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import { StorageManagerContext } from '../../api/storageManagerContext';
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import { delivery as deliveryApi } from '../../api';
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/**
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* Inline PDF viewer rendered as a panel tile, mirroring TextEditorPanel's
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* "window" behaviour: it can sit above, right of, or below the article list,
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* and stays sticky when docked to the right. Mount it only while a PDF
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* attachment is selected; unmounting closes it.
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*/
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export class PdfViewerPanel extends PureComponent {
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static contextType = StorageManagerContext;
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constructor(props) {
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super(props);
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this.state = {
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url: null,
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loading: false,
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error: null,
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};
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this.handleOpenExternal = this.handleOpenExternal.bind(this);
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this.handleDownload = this.handleDownload.bind(this);
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}
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componentDidMount() {
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this.loadUrl();
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}
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componentDidUpdate(prevProps) {
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if (this.props.attachment !== prevProps.attachment) {
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this.revokeUrl();
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this.loadUrl();
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}
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}
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componentWillUnmount() {
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this.revokeUrl();
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}
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revokeUrl() {
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if (this._objectUrl) {
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URL.revokeObjectURL(this._objectUrl);
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this._objectUrl = null;
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}
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}
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async loadUrl() {
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const { attachment, docId } = this.props;
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if (!attachment) return;
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if (
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(attachment.file instanceof Blob || attachment.file instanceof File) &&
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attachment.file.size > 0
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) {
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this._objectUrl = URL.createObjectURL(attachment.file);
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this.setState({ url: this._objectUrl, loading: false, error: null });
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return;
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}
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const effectiveDocId = docId ?? attachment.manifestId;
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const fileId = attachment.fileId ?? attachment.id;
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if (effectiveDocId != null && fileId != null) {
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this.setState({ loading: true, error: null });
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try {
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const getFile =
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this.context?.delivery?.getFile?.bind(this.context.delivery) ||
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deliveryApi.getFile;
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const blob = await getFile(effectiveDocId, fileId);
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this._objectUrl = URL.createObjectURL(blob);
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this.setState({ url: this._objectUrl, loading: false, error: null });
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return;
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} catch (err) {
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console.error('Fehler beim Laden der PDF-Datei:', err);
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enqueueSnackbar('Fehler beim Laden der Datei', { variant: 'error' });
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this.setState({ loading: false, error: 'Fehler beim Laden der Datei' });
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return;
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}
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}
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this.setState({ url: null, loading: false, error: null });
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}
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handleOpenExternal() {
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const { url } = this.state;
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if (!url) return;
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window.open(url, '_blank');
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}
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handleDownload() {
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const { attachment } = this.props;
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const { url } = this.state;
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if (!url) return;
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const link = document.createElement('a');
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link.href = url;
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link.download = attachment?.name || 'Dokument.pdf';
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document.body.appendChild(link);
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link.click();
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document.body.removeChild(link);
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}
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render() {
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const {
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onClose,
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attachment,
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wide = 3,
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position = 'top',
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onPositionChange,
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height = '60vh',
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} = this.props;
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if (!attachment) return null;
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const { url, loading, error } = this.state;
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const filename = attachment?.name || 'Dokument.pdf';
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return (
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<PanelTile
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wide={wide}
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minHeight={320}
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color="#f8fafc"
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sx={{ height, minHeight: 320 }}
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>
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<Box
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sx={{
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display: 'flex',
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flexDirection: 'column',
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height: '100%',
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minHeight: 0,
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minWidth: 0,
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}}
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>
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<Box
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sx={{
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display: 'flex',
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alignItems: 'center',
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justifyContent: 'space-between',
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gap: 1.5,
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mb: 1.5,
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flexShrink: 0,
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}}
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>
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<Box sx={{ display: 'flex', alignItems: 'center', gap: 1.5, minWidth: 0 }}>
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<PictureAsPdfIcon color="error" />
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<Box sx={{ minWidth: 0 }}>
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<Typography variant="subtitle1" fontWeight={600} noWrap>
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{filename}
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</Typography>
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<Typography variant="caption" color="text.secondary">
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PDF-Vorschau
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</Typography>
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</Box>
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</Box>
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<Box sx={{ display: 'flex', alignItems: 'center', gap: 0.5, flexShrink: 0 }}>
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<Tooltip title="Über der Artikelliste">
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<IconButton
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size="small"
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color={position === 'top' ? 'primary' : 'default'}
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aria-label="Über der Artikelliste"
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onClick={() => onPositionChange?.('top')}
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>
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<VerticalAlignTopIcon fontSize="small" />
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</IconButton>
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</Tooltip>
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<Tooltip title="Rechts neben der Artikelliste">
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<IconButton
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size="small"
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color={position === 'right' ? 'primary' : 'default'}
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aria-label="Rechts neben der Artikelliste"
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onClick={() => onPositionChange?.('right')}
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>
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<ViewSidebarIcon fontSize="small" />
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</IconButton>
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</Tooltip>
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<Tooltip title="Unter der Artikelliste">
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<IconButton
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size="small"
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color={position === 'below' ? 'primary' : 'default'}
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aria-label="Unter der Artikelliste"
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onClick={() => onPositionChange?.('below')}
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>
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<VerticalAlignBottomIcon fontSize="small" />
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</IconButton>
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</Tooltip>
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<IconButton size="small" onClick={onClose} sx={{ color: 'text.secondary' }}>
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<CloseIcon fontSize="small" />
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</IconButton>
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</Box>
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</Box>
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<Box
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sx={{
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position: 'relative',
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flex: 1,
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display: 'flex',
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flexDirection: 'column',
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minHeight: 0,
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border: '1px solid',
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borderColor: 'divider',
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borderRadius: 1,
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bgcolor: '#ffffff',
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overflow: 'hidden',
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}}
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>
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{loading && (
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<Box
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sx={{
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position: 'absolute',
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inset: 0,
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display: 'flex',
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alignItems: 'center',
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justifyContent: 'center',
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bgcolor: 'rgba(248, 250, 252, 0.7)',
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zIndex: 2,
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}}
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>
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<CircularProgress size={36} />
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</Box>
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)}
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{error ? (
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<Box
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sx={{
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flex: 1,
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display: 'flex',
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alignItems: 'center',
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justifyContent: 'center',
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p: 2,
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}}
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>
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<Typography color="text.secondary">{error}</Typography>
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</Box>
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) : (
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url && (
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<Box
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component="iframe"
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title={filename}
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src={url}
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sx={{ flex: 1, width: '100%', border: 'none' }}
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/>
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)
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)}
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</Box>
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<Box
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sx={{
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display: 'flex',
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justifyContent: 'space-between',
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gap: 1,
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mt: 1.5,
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flexShrink: 0,
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}}
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>
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<Box sx={{ display: 'flex', gap: 1 }}>
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<Button
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size="small"
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variant="outlined"
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startIcon={<OpenInNewIcon />}
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onClick={this.handleOpenExternal}
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disabled={loading || !url}
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>
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In neuem Tab
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</Button>
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<Button
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size="small"
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variant="outlined"
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startIcon={<DownloadOutlinedIcon />}
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onClick={this.handleDownload}
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disabled={loading || !url}
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>
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Download
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</Button>
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</Box>
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<Button size="small" onClick={onClose}>
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Schließen
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</Button>
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</Box>
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</Box>
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</PanelTile>
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);
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}
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}
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export default PdfViewerPanel;
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