com.profitsoftware.vaadin.query.matcher.MatchSibling.java Source code

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Here is the source code for com.profitsoftware.vaadin.query.matcher.MatchSibling.java

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/*
 * Copyright 2013 Profit Software Oy
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.profitsoftware.vaadin.query.matcher;

import java.util.Iterator;

import com.profitsoftware.vaadin.query.Matcher;
import com.vaadin.ui.Component;
import com.vaadin.ui.HasComponents;

public class MatchSibling implements Matcher {

    private static final long serialVersionUID = 1L;

    public Matcher matcher;

    public MatchSibling(Matcher matcher) {
        this.matcher = matcher;
    }

    public boolean match(Component component) {
        Component parent = component.getParent();
        if (parent == null) {
            return false;
        }
        if (parent instanceof HasComponents) {
            HasComponents components = (HasComponents) parent;
            Iterator<Component> i = components.iterator();
            Component previous = null;
            while (i.hasNext()) {
                Component next = i.next();
                if (next == component) {
                    return matcher.match(previous);
                }
                previous = next;
            }
        }
        return false;
    }

    @Override
    public String toString() {
        return "sibling(" + matcher + ")";
    }
}