uk.ac.cam.cl.dtg.picky.client.binding.EntrySelectionLabel.java Source code

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Here is the source code for uk.ac.cam.cl.dtg.picky.client.binding.EntrySelectionLabel.java

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package uk.ac.cam.cl.dtg.picky.client.binding;

/*
 * #%L
 * Picky
 * %%
 * Copyright (C) 2015 Daniel Hintze <dh526@cl.cam.ac.uk>
 * %%
 * 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.
 * #L%
 */

import java.text.NumberFormat;
import java.time.Duration;
import java.util.stream.Collectors;

import javafx.beans.binding.StringBinding;
import javafx.collections.ObservableList;
import javafx.scene.control.TreeItem;

import org.reactfx.EventStreams;

import com.google.common.collect.ArrayListMultimap;
import com.google.common.collect.ListMultimap;

public class EntrySelectionLabel extends StringBinding {

    private ObservableList<TreeItem<String>> entrySelectionProperty;
    private FileSelectionBinding fileSelectionBinding;

    private NumberFormat numberFormat = NumberFormat.getInstance();

    public EntrySelectionLabel(FileSelectionBinding fileSelectionBinding,
            ObservableList<TreeItem<String>> entrySelectionProperty) {
        this.fileSelectionBinding = fileSelectionBinding;
        this.entrySelectionProperty = entrySelectionProperty;

        bind(fileSelectionBinding);

        EventStreams.changesOf(entrySelectionProperty).successionEnds(Duration.ofMillis(200))
                .subscribe(s -> invalidate());
    }

    @Override
    protected String computeValue() {
        ListMultimap<String, String> entrySelectionMap = ArrayListMultimap.create();

        String label = "Entry Selection";
        if (fileSelectionBinding.get() != null) {
            entrySelectionProperty.stream().filter(i -> i.getParent() != null)
                    .forEach(i -> entrySelectionMap.put(i.getParent().getValue(), i.getValue()));

            Long fileSelection = fileSelectionBinding.get().stream().filter(e -> e.getBlocks().stream()
                    .filter(b -> b.matches(entrySelectionMap)).collect(Collectors.counting()) > 0)
                    .collect(Collectors.counting());

            label += " (Matching files: " + numberFormat.format(fileSelection) + " of "
                    + numberFormat.format(fileSelectionBinding.get().size()) + ")";
        }

        return label;
    }
}