Example usage for com.vaadin.server DownloadStream CONTENT_DISPOSITION

Introduction

In this page you can find the example usage for com.vaadin.server DownloadStream CONTENT_DISPOSITION.

Prototype

String CONTENT_DISPOSITION

To view the source code for com.vaadin.server DownloadStream CONTENT_DISPOSITION.

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Usage

From source file:com.haulmont.cuba.web.toolkit.ui.CubaFileDownloader.java

License:Apache License

@Override
public boolean handleConnectorRequest(VaadinRequest request, VaadinResponse response, String path)
        throws IOException {
    if (path == null) {
        return false;
    }//from   ww  w  . j  a  v  a  2s.c om

    String targetResourceKey;
    DownloadStream stream;

    VaadinSession session = getSession();
    session.lock();
    try {
        String[] parts = path.split("/", 2);
        targetResourceKey = parts[0];
        if (targetResourceKey.isEmpty()) {
            return false;
        }

        Resource resource = getResource(targetResourceKey);
        if (resource == null) {
            return false;
        }

        boolean isViewDocumentRequest = targetResourceKey.startsWith(VIEW_RESOURCE_PREFIX);

        stream = ((ConnectorResource) resource).getStream();

        String contentDisposition = stream.getParameter(DownloadStream.CONTENT_DISPOSITION);
        if (contentDisposition == null) {
            // Content-Disposition: attachment generally forces download
            contentDisposition = (isViewDocumentRequest ? "inline" : "attachment") + "; "
                    + DownloadStream.getContentDispositionFilename(stream.getFileName());
        }

        stream.setParameter(DownloadStream.CONTENT_DISPOSITION, contentDisposition);

        // Content-Type to block eager browser plug-ins from hijacking the file
        if (isOverrideContentType() && !isViewDocumentRequest) {
            stream.setContentType("application/octet-stream;charset=UTF-8");
        } else {
            if (StringUtils.isNotEmpty(stream.getContentType())) {
                stream.setContentType(stream.getContentType() + ";charset=UTF-8\"");
            } else {
                stream.setContentType(";charset=UTF-8\"");
            }
        }
    } finally {
        session.unlock();
    }

    stream.writeResponse(request, response);
    return true;
}

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From source file:com.haulmont.cuba.web.widgets.CubaFileDownloader.java

License:Apache License

@Override
public boolean handleConnectorRequest(VaadinRequest request, VaadinResponse response, String path)
        throws IOException {
    if (path == null) {
        return false;
    }/*w w w. j a v  a  2 s . co  m*/

    String targetResourceKey;
    DownloadStream stream;

    VaadinSession session = getSession();
    session.lock();
    try {
        String[] parts = path.split("/", 2);
        targetResourceKey = parts[0];
        if (targetResourceKey.isEmpty()) {
            return false;
        }

        Resource resource = getResource(targetResourceKey);
        if (resource == null) {
            return false;
        }

        boolean isViewDocumentRequest = targetResourceKey.startsWith(VIEW_RESOURCE_PREFIX);

        stream = ((ConnectorResource) resource).getStream();

        String contentDisposition = stream.getParameter(DownloadStream.CONTENT_DISPOSITION);
        if (contentDisposition == null) {
            // Content-Disposition: attachment generally forces download
            contentDisposition = (isViewDocumentRequest ? "inline" : "attachment") + "; "
                    + DownloadStream.getContentDispositionFilename(stream.getFileName());
        }

        stream.setParameter(DownloadStream.CONTENT_DISPOSITION, contentDisposition);

        // Content-Type to block eager browser plug-ins from hijacking the file
        if (isOverrideContentType() && !isViewDocumentRequest && !isSafariOrIOS()) {
            stream.setContentType("application/octet-stream;charset=UTF-8");
        } else {
            if (StringUtils.isNotEmpty(stream.getContentType())) {
                stream.setContentType(stream.getContentType() + ";charset=UTF-8\"");
            } else {
                stream.setContentType(";charset=UTF-8\"");
            }
        }
    } finally {
        session.unlock();
    }

    stream.writeResponse(request, response);
    return true;
}

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