/*

 * Copyright (c) 1997, 2016, Oracle and/or its affiliates. All rights reserved.

 * 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.

 *

 * 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.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package org.netbeans.jemmy.drivers.scrolling;

import java.awt.Adjustable;

import java.awt.Point;

import java.awt.Scrollbar;

import org.netbeans.jemmy.operators.ComponentOperator;

import org.netbeans.jemmy.operators.ScrollPaneOperator;

/**

 * ScrollDriver for java.awt.ScrollPane component type.

 *

 * @author Alexandre Iline(alexandre.iline@oracle.com)

 */

public class ScrollPaneDriver extends AWTScrollDriver {

    private static final int CLICK_OFFSET = 5;

    /**

     * Constructs a ScrollPaneDriver.

     */

    public ScrollPaneDriver() {

        super(new String[]{"org.netbeans.jemmy.operators.ScrollPaneOperator"});

    }

    @Override

    protected int position(ComponentOperator oper, int orientation) {

        return (orientation == Adjustable.HORIZONTAL)

                ? ((ScrollPaneOperator) oper).getScrollPosition().x

                : ((ScrollPaneOperator) oper).getScrollPosition().y;

    }

    @Override

    public void scrollToMinimum(ComponentOperator oper, final int orientation) {

        final Adjustable adj

                = (orientation == Scrollbar.HORIZONTAL)

                        ? ((ScrollPaneOperator) oper).getHAdjustable()

                        : ((ScrollPaneOperator) oper).getVAdjustable();

        scroll(oper,

                new ScrollAdjuster() {

            @Override

            public int getScrollDirection() {

                return ((adj.getMinimum() < adj.getValue())

                        ? DECREASE_SCROLL_DIRECTION

                        : DO_NOT_TOUCH_SCROLL_DIRECTION);

            }

            @Override

            public int getScrollOrientation() {

                return orientation;

            }

            @Override

            public String getDescription() {

                return "Scroll to minimum";

            }

            @Override

            public String toString() {

                return "scrollToMinimum.ScrollAdjuster{description = " + getDescription() + '}';

            }

        });

    }

    @Override

    public void scrollToMaximum(ComponentOperator oper, final int orientation) {

        final Adjustable adj

                = (orientation == Scrollbar.HORIZONTAL)

                        ? ((ScrollPaneOperator) oper).getHAdjustable()

                        : ((ScrollPaneOperator) oper).getVAdjustable();

        scroll(oper,

                new ScrollAdjuster() {

            @Override

            public int getScrollDirection() {

                return (((adj.getMaximum() - adj.getVisibleAmount()) > adj.getValue())

                        ? INCREASE_SCROLL_DIRECTION

                        : DO_NOT_TOUCH_SCROLL_DIRECTION);

            }

            @Override

            public int getScrollOrientation() {

                return orientation;

            }

            @Override

            public String getDescription() {

                return "Scroll to maximum";

            }

            @Override

            public String toString() {

                return "scrollToMaximum.ScrollAdjuster{description = " + getDescription() + '}';

            }

        });

    }

    @Override

    protected Point getClickPoint(ComponentOperator oper, int direction, int orientation) {

        int x, y;

        if (orientation == Scrollbar.HORIZONTAL) {

            int offset = ((ScrollPaneOperator) oper).

                    isScrollbarVisible(Scrollbar.VERTICAL)

                    ? ((ScrollPaneOperator) oper).getVScrollbarWidth() : 0;

            if (direction == ScrollAdjuster.INCREASE_SCROLL_DIRECTION) {

                x = oper.getWidth() - 1 - CLICK_OFFSET - offset;

            } else if (direction == ScrollAdjuster.DECREASE_SCROLL_DIRECTION) {

                x = CLICK_OFFSET;

            } else {

                return null;

            }

            y = oper.getHeight() - ((ScrollPaneOperator) oper).getHScrollbarHeight() / 2;

        } else if (orientation == Scrollbar.VERTICAL) {

            int offset = ((ScrollPaneOperator) oper).

                    isScrollbarVisible(Scrollbar.HORIZONTAL)

                    ? ((ScrollPaneOperator) oper).getHScrollbarHeight() : 0;

            if (direction == ScrollAdjuster.INCREASE_SCROLL_DIRECTION) {

                y = oper.getHeight() - 1 - CLICK_OFFSET - offset;

            } else if (direction == ScrollAdjuster.DECREASE_SCROLL_DIRECTION) {

                y = CLICK_OFFSET;

            } else {

                return null;

            }

            x = oper.getWidth() - ((ScrollPaneOperator) oper).getVScrollbarWidth() / 2;

        } else {

            return null;

        }

        return new Point(x, y);

    }

}