com.vaadin.ui.DeclarativeCaptionGenerator 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;
/**
* Item caption generator class for declarative support.
*
* Provides a straightforward mapping between an item and its caption.
*
* @param
* item type
*/
class DeclarativeCaptionGenerator implements ItemCaptionGenerator {
private ItemCaptionGenerator fallback;
private Map captions = new HashMap<>();
public DeclarativeCaptionGenerator(ItemCaptionGenerator fallback) {
this.fallback = fallback;
}
@Override
public String apply(T item) {
return captions.containsKey(item) ? captions.get(item)
: fallback.apply(item);
}
/**
* Sets a {@code caption} for the {@code item}.
*
* @param item
* a data item
* @param caption
* a caption for the {@code item}
*/
protected void setCaption(T item, String caption) {
captions.put(item, caption);
}
}