com.vaadin.server.ThemeResource 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 com.vaadin.util.FileTypeResolver;
/**
* ThemeResource is a named theme dependant resource provided and
* managed by a theme. The actual resource contents are dynamically resolved to
* comply with the used theme by the terminal adapter. This is commonly used to
* provide static images, flash, java-applets, etc for the terminals.
*
* @author Vaadin Ltd.
* @since 3.0
*/
@SuppressWarnings("serial")
public class ThemeResource implements Resource {
/**
* Id of the terminal managed resource.
*/
private String resourceID = null;
/**
* Creates a resource.
*
* @param resourceId
* the Id of the resource.
*/
public ThemeResource(String resourceId) {
if (resourceId == null) {
throw new NullPointerException("Resource ID must not be null");
}
if (resourceId.isEmpty()) {
throw new IllegalArgumentException("Resource ID can not be empty");
}
if (resourceId.charAt(0) == '/') {
throw new IllegalArgumentException(
"Resource ID must be relative (can not begin with /)");
}
resourceID = resourceId;
}
/**
* Tests if the given object equals this Resource.
*
* @param obj
* the object to be tested for equality.
* @return true if the given object equals this Icon,
* false if not.
* @see java.lang.Object#equals(Object)
*/
@Override
public boolean equals(Object obj) {
return obj instanceof ThemeResource
&& resourceID.equals(((ThemeResource) obj).resourceID);
}
/**
* @see java.lang.Object#hashCode()
*/
@Override
public int hashCode() {
return resourceID.hashCode();
}
/**
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
return resourceID;
}
/**
* Gets the resource id.
*
* @return the resource id.
*/
public String getResourceId() {
return resourceID;
}
/**
* @see com.vaadin.server.Resource#getMIMEType()
*/
@Override
public String getMIMEType() {
return FileTypeResolver.getMIMEType(getResourceId());
}
}