com.vaadin.ui.DeclarativeIconGenerator 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.ui;
import java.util.HashMap;
import java.util.Map;
import com.vaadin.server.Resource;
/**
* Icon generator class for declarative support.
*
* Provides a straightforward mapping between an item and its icon.
*
* @param
* item type
*/
class DeclarativeIconGenerator implements IconGenerator {
private IconGenerator fallback;
private Map captions = new HashMap<>();
public DeclarativeIconGenerator(IconGenerator fallback) {
this.fallback = fallback;
}
@Override
public Resource apply(T item) {
return captions.containsKey(item) ? captions.get(item)
: fallback.apply(item);
}
/**
* Sets an {@code icon} for the {@code item}.
*
* @param item
* a data item
* @param icon
* an icon for the {@code item}
*/
protected void setIcon(T item, Resource icon) {
captions.put(item, icon);
}
}