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 *  DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 * 
 *  This code is free software; you can redistribute it and/or modify it
 *  under the terms of the GNU General Public License version 2 only, as
 *  published by the Free Software Foundation.  Oracle designates this
 *  particular file as subject to the "Classpath" exception as provided
 *  by Oracle in the LICENSE file that accompanied this code.
 * 
 *  This code is distributed in the hope that it will be useful, but WITHOUT
 *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 *  version 2 for more details (a copy is included in the LICENSE file that
 *  accompanied this code).
 * 
 *  You should have received a copy of the GNU General Public License version
 *  2 along with this work; if not, write to the Free Software Foundation,
 *  Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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package org.graalvm.visualvm.modules.tracer.impl.timeline;

import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.LayoutManager2;
import org.graalvm.visualvm.lib.charts.ChartContext;
import org.graalvm.visualvm.lib.charts.swing.Utils;

/**
 *
 * @author Jiri Sedlacek
 */
final class VerticalTimelineLayout implements LayoutManager2 {

    private final TimelineChart chart;


    // --- Constructor ---------------------------------------------------------

    VerticalTimelineLayout(TimelineChart chart) {
        this.chart = chart;
    }


    // --- Public API ----------------------------------------------------------

    public Dimension minimumLayoutSize(Container parent) {
        return preferredLayoutSize(parent);
    }

    public Dimension maximumLayoutSize(Container parent) {
        return preferredLayoutSize(parent);
    }

    public Dimension preferredLayoutSize(Container parent) {
//        synchronized (parent.getTreeLock()) {
            Dimension dim = new Dimension(0, Utils.checkedInt(chart.getChartContext().getViewHeight()));

            for (int i = 0; i < parent.getComponentCount(); i++)
                dim.width = Math.max(dim.width, parent.getComponent(i).
                                     getPreferredSize().width);

            return dim;
//        }
    }

    public void layoutContainer(Container parent) {
//        synchronized (parent.getTreeLock()) {
            int width = parent.getWidth();
            int rowsCount = Math.min(chart.getRowsCount(), parent.getComponentCount());
            for (int i = 0; i < rowsCount; i++) {
                ChartContext context = chart.getRow(i).getContext();
                parent.getComponent(i).setBounds(0, Utils.checkedInt(context.getViewportOffsetY() + chart.getOffsetY()),
                                                 width, context.getViewportHeight());
//            }
        }
    }


    // --- Implicit implementation ---------------------------------------------

    public void addLayoutComponent(Component comp, Object constraints) {}

    public void addLayoutComponent(String name, Component comp) {}

    public void removeLayoutComponent(Component comp) {}

    public float getLayoutAlignmentX(Container target) { return 0.5f; }

    public float getLayoutAlignmentY(Container target) { return 0.5f; }

    public void invalidateLayout(Container target) {}

}
