org.stanwood.nwn2.gui.view.UIScrollBarView.java Source code

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Here is the source code for org.stanwood.nwn2.gui.view.UIScrollBarView.java

Source

/*
 *  Copyright (C) 2008  John-Paul.Stanford <dev@stanwood.org.uk>
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.stanwood.nwn2.gui.view;

import java.awt.Dimension;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.stanwood.nwn2.gui.StyleSheetManager;
import org.stanwood.nwn2.gui.model.NWN2GUIObject;
import org.stanwood.nwn2.gui.model.UIButton;
import org.stanwood.nwn2.gui.model.UIObject;
import org.stanwood.nwn2.gui.model.UIScene;
import org.stanwood.nwn2.gui.model.UIScrollBar;

/**
 * Used to render the UIList box
 */
public class UIScrollBarView extends UIObjectView {

    private final static Log log = LogFactory.getLog(UIScrollBarView.class);
    private UIButtonView back;
    private UIButtonView slider;
    private UIButtonView down;
    private UIButtonView up;

    public UIScrollBarView(UIScrollBar scrollBar, UIScene scene, Dimension screenDimension) {
        super(scrollBar, scene, screenDimension);
        createView(scrollBar);
    }

    private void createView(UIScrollBar scrollBar) {
        UIScrollBar newScrollBar = scrollBar;
        if (scrollBar.getStyle() != null) {
            UIObject styleListBox = StyleSheetManager.getInstance().getObjectByName(scrollBar.getStyle());
            if (styleListBox != null) {
                try {
                    newScrollBar = (UIScrollBar) scrollBar.clone();
                    newScrollBar.applyStyle(styleListBox);
                } catch (CloneNotSupportedException e) {
                    log.error("Unable to clone button, " + e.getMessage(), e);
                }
            } else {
                log.error("Unable to find the style: " + scrollBar.getStyle());
            }
        }

        up = getChildWithState(newScrollBar, "up");
        down = getChildWithState(newScrollBar, "down");
        slider = getChildWithState(newScrollBar, "slider");
        back = getChildWithState(newScrollBar, "back");
        if (up != null) {
            setWidth(up.getWidth());
            addChild(up);
        }
        if (down != null) {
            addChild(down);
        }
        if (back != null) {
            addChild(back);
        }
        if (slider != null) {
            addChild(slider);
        }
    }

    @Override
    public void positionChanged() {
        super.positionChanged();
        if (up != null) {
            childSetX(up, this.getX());
            up.setY(this.getY());
            up.positionChanged();
            updateChildren(up);
        }

        if (down != null) {
            childSetX(down, this.getX());
            down.setY(this.getY() + this.getHeight() - down.getHeight());
            down.positionChanged();
            updateChildren(down);
        }

        if (slider != null) {
            childSetX(slider, this.getX());
            slider.setY(this.getY() + (up.getY() + up.getHeight()));
            slider.positionChanged();
            updateChildren(slider);
        }

        if (back != null) {
            childSetX(back, this.getX());
            back.setY(up.getY() + up.getHeight());
            back.setHeight(down.getY() - this.getY() - down.getHeight());
            back.positionChanged();
            updateChildren(back);
        }
    }

    private void updateChildren(UIObjectView obj) {
        for (UIObjectView child : obj.getChildren()) {
            child.setX(obj.getX());
            child.setY(obj.getY());
            child.setHeight(obj.getHeight());
            child.setWidth(obj.getWidth());
        }
    }

    private void childSetX(UIButtonView child, int value) {
        value += child.getX();
        child.setX(value);
    }

    private UIButtonView getChildWithState(UIScrollBar scrollBar, String state) {
        for (NWN2GUIObject obj : scrollBar.getChildren()) {
            if (obj instanceof UIButton) {
                UIButton button = (UIButton) obj;
                if (button.getName() != null && button.getName().equalsIgnoreCase(state)) {
                    return (UIButtonView) UIObjectFactory.createViewObject(button, getScene());
                }
            }
        }
        return null;
    }

}