com.vaadin.server.ExternalResource Maven / Gradle / Ivy
/*
* Copyright (C) 2000-2024 Vaadin Ltd
*
* This program is available under Vaadin Commercial License and Service Terms.
*
* See for the full
* license.
*/
package com.vaadin.server;
import java.net.URL;
import com.vaadin.util.FileTypeResolver;
/**
* ExternalResource implements source for resources fetched from
* location specified by URL:s. The resources are fetched directly by the client
* terminal and are not fetched through the terminal adapter.
*
* @author Vaadin Ltd.
* @since 3.0
*/
@SuppressWarnings("serial")
public class ExternalResource implements Resource {
/**
* Url of the download.
*/
private String sourceURL = null;
/**
* MIME Type for the resource
*/
private String mimeType = null;
/**
* Creates a new download component for downloading directly from given URL.
*
* @param sourceURL
* the source URL.
*/
public ExternalResource(URL sourceURL) {
if (sourceURL == null) {
throw new RuntimeException("Source must be non-null");
}
this.sourceURL = sourceURL.toString();
}
/**
* Creates a new download component for downloading directly from given URL.
*
* @param sourceURL
* the source URL.
* @param mimeType
* the MIME Type
*/
public ExternalResource(URL sourceURL, String mimeType) {
this(sourceURL);
this.mimeType = mimeType;
}
/**
* Creates a new download component for downloading directly from given URL.
*
* @param sourceURL
* the source URL.
*/
public ExternalResource(String sourceURL) {
if (sourceURL == null) {
throw new RuntimeException("Source must be non-null");
}
this.sourceURL = sourceURL;
}
/**
* Creates a new download component for downloading directly from given URL.
*
* @param sourceURL
* the source URL.
* @param mimeType
* the MIME Type
*/
public ExternalResource(String sourceURL, String mimeType) {
this(sourceURL);
this.mimeType = mimeType;
}
/**
* Gets the URL of the external resource.
*
* @return the URL of the external resource.
*/
public String getURL() {
return sourceURL;
}
/**
* Gets the MIME type of the resource.
*
* @see com.vaadin.server.Resource#getMIMEType()
*/
@Override
public String getMIMEType() {
if (mimeType == null) {
mimeType = FileTypeResolver.getMIMEType(getURL());
}
return mimeType;
}
/**
* Sets the MIME type of the resource.
*/
public void setMIMEType(String mimeType) {
this.mimeType = mimeType;
}
}