DMDirc-Plugins/ui_swing/src/main/java/com/dmdirc/addons/ui_swing/dialogs/prefs/CategoryLabel.java

/*
 * Copyright (c) 2006-2017 DMDirc Developers
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
 * documentation files (the "Software"), to deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 * WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS
 * OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

package com.dmdirc.addons.ui_swing.dialogs.prefs;

import com.dmdirc.addons.ui_swing.components.IconManager;
import com.dmdirc.config.prefs.PreferencesCategory;

import java.awt.Dimension;

import javax.annotation.Nullable;
import javax.swing.BorderFactory;
import javax.swing.Icon;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.UIManager;

import net.miginfocom.layout.PlatformDefaults;

/**
 * Category Label.
 */
public class CategoryLabel extends JLabel {

    /** Serial version UID. */
    private static final long serialVersionUID = -1659415238166842265L;
    /** Parent list. */
    @Nullable
    private final JList<? extends PreferencesCategory> parentList;

    /**
     * Creates a new category label.
     *
     * @param iconManager Icon manager
     * @param parentList  Parent list
     * @param category    Parent category
     * @param numCats     Number of categories shown
     * @param index       Index of this label
     */
    public CategoryLabel(final IconManager iconManager,
            @Nullable final JList<? extends PreferencesCategory> parentList,
            final PreferencesCategory category, final int numCats,
            final int index) {
        this.parentList = parentList;
        final int padding = (int) (1.5 * PlatformDefaults.getUnitValueX("related").getValue());

        setText(category.getTitle());
        new IconLoader(iconManager, this, category.getIcon()).execute();

        int level = 0;
        PreferencesCategory temp = category;
        while (temp.getParent() != null) {
            temp = temp.getParent();
            level++;
        }

        setPreferredSize(new Dimension(100000, Math.max(16, getFont().getSize())
                + padding));
        setBorder(BorderFactory.createEmptyBorder(padding / 2, padding + level
                * 18, padding / 2, padding));

        if (parentList != null) {
            setBackground(parentList.getBackground());
            setForeground(parentList.getForeground());
        }
        setOpaque(true);
        setToolTipText(null);

        if (category.getPath().equals(category.getTitle())) {
            boolean hasChildren = false;
            for (PreferencesCategory child : category.getSubcats()) {
                if (!child.isInline()) {
                    hasChildren = true;
                    break;
                }
            }

            hasChildren = hasChildren || index + 1 == numCats;

            setBackground(UIManager.getColor("ToolTip.background"));
            setForeground(UIManager.getColor("ToolTip.foreground"));
            setBorder(BorderFactory.createCompoundBorder(
                    BorderFactory.createMatteBorder(1, 0, hasChildren ? 1 : 0,
                            0, UIManager.getColor("ToolTip.background").darker()
                            .darker()), getBorder()));
        }
    }

    @Override
    public void setIcon(final Icon icon) {
        super.setIcon(icon);

        if (parentList != null) {
            parentList.repaint();
        }
    }

}