protected void setResponseHeaders()

in wicket-core/src/main/java/org/apache/wicket/request/resource/AbstractResource.java [766:881]
86 lines of code
18 McCabe index (conditional complexity)

	protected void setResponseHeaders(final ResourceResponse resourceResponse,
		final Attributes attributes)
	{
		Response response = attributes.getResponse();
		if (response instanceof WebResponse)
		{
			WebResponse webResponse = (WebResponse)response;

			// 1. Last Modified
			Instant lastModified = resourceResponse.getLastModified();
			if (lastModified != null)
			{
				webResponse.setLastModifiedTime(lastModified);
			}

			// 2. Caching
			configureCache(resourceResponse, attributes);

			if (resourceResponse.getErrorCode() != null)
			{
				webResponse.sendError(resourceResponse.getErrorCode(),
					resourceResponse.getErrorMessage());
				return;
			}

			if (resourceResponse.getStatusCode() != null)
			{
				webResponse.setStatus(resourceResponse.getStatusCode());
			}

			if (!resourceResponse.dataNeedsToBeWritten(attributes))
			{
				webResponse.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
				return;
			}

			// 3. Content Disposition
			String fileName = resourceResponse.getFileName();
			ContentDisposition disposition = resourceResponse.getContentDisposition();
			if (ContentDisposition.ATTACHMENT == disposition)
			{
				webResponse.setAttachmentHeader(fileName);
			}
			else if (ContentDisposition.INLINE == disposition)
			{
				webResponse.setInlineHeader(fileName);
			}

			// 4. Mime Type (+ encoding)
			String mimeType = resourceResponse.getContentType();
			if (mimeType != null)
			{
				final String encoding = resourceResponse.getTextEncoding();

				if (encoding == null)
				{
					webResponse.setContentType(mimeType);
				}
				else
				{
					webResponse.setContentType(mimeType + "; charset=" + encoding);
				}
			}

			// 5. Accept Range
			ContentRangeType acceptRange = resourceResponse.getAcceptRange();
			if (acceptRange != null)
			{
				webResponse.setAcceptRange(acceptRange.getTypeName());
			}

			long contentLength = resourceResponse.getContentLength();
			boolean contentRangeApplied = false;

			// 6. Content Range
			// for more information take a look here:
			// http://stackoverflow.com/questions/8293687/sample-http-range-request-session
			// if the content range header has been set directly
			// to the resource response use it otherwise calculate it
			String contentRange = resourceResponse.getContentRange();
			if (contentRange != null)
			{
				webResponse.setContentRange(contentRange);
			}
			else
			{
				// content length has to be set otherwise the content range header can not be
				// calculated - accept range must be set to bytes - others are not supported at the
				// moment
				if (contentLength != -1 && ContentRangeType.BYTES.equals(acceptRange))
				{
					contentRangeApplied = setResponseContentRangeHeaderFields(webResponse,
						attributes, contentLength);
				}
			}

			// 7. Content Length
			if (contentLength != -1 && !contentRangeApplied)
			{
				webResponse.setContentLength(contentLength);
			}

			// add custom headers and values
			final HttpHeaderCollection headers = resourceResponse.getHeaders();

			for (String name : headers.getHeaderNames())
			{
				checkHeaderAccess(name);

				for (String value : headers.getHeaderValues(name))
				{
					webResponse.addHeader(name, value);
				}
			}
		}
	}