/*
* Copyright (c) 2007, 2011, 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. 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.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package com.sun.tools.visualvm.core.ui.components;
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Rectangle;
import javax.swing.BorderFactory;
import javax.swing.JComponent;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JViewport;
import javax.swing.Scrollable;
/**
* Predefined JScrollPane to be used in VisualVM, for example in details views.
* Use UISupport.createScrollableContainer() method instead of instantiating
* this class directly if creating scrollable container for the Options panel.
*
* @author Jiri Sedlacek
*/
public final class ScrollableContainer extends JScrollPane {
/**
* Creates new instance of ScrollableContainer.
*
* @param view component to be displayed
*/
public ScrollableContainer(JComponent view) {
this(view, VERTICAL_SCROLLBAR_AS_NEEDED,
HORIZONTAL_SCROLLBAR_AS_NEEDED);
}
/**
* Creates new instance of ScrollableContainer.
*
* @param view component to be displayed
* @param vsbPolicy policy flag for the vertical scrollbar
* @param hsbPolicy policy flag for the horizontal scrollbar
*/
public ScrollableContainer(JComponent view, int vsbPolicy, int hsbPolicy) {
setViewportView(new ScrollableContents(view));
setVerticalScrollBarPolicy(vsbPolicy);
setHorizontalScrollBarPolicy(hsbPolicy);
setBorder(BorderFactory.createEmptyBorder());
setViewportBorder(BorderFactory.createEmptyBorder());
getViewport().setOpaque(false);
setOpaque(false);
}
// --- Scrollable container ------------------------------------------------
private class ScrollableContents extends JPanel implements Scrollable {
private ScrollableContents(JComponent contents) {
super(new BorderLayout());
setOpaque(false);
add(contents, BorderLayout.CENTER);
}
public Dimension getPreferredScrollableViewportSize() {
return getPreferredSize();
}
public int getScrollableUnitIncrement(Rectangle visibleRect,
int orientation, int direction) {
return 20;
}
public int getScrollableBlockIncrement(Rectangle visibleRect,
int orientation, int direction) {
return (int)(visibleRect.height * 0.9d);
}
public boolean getScrollableTracksViewportWidth() {
if (getHorizontalScrollBarPolicy() == HORIZONTAL_SCROLLBAR_NEVER)
return true;
Container parent = getParent();
if ((parent == null) || !(parent instanceof JViewport)) return false;
return getMinimumSize().width < ((JViewport)parent).getWidth();
}
public boolean getScrollableTracksViewportHeight() {
if (getVerticalScrollBarPolicy() == VERTICAL_SCROLLBAR_NEVER)
return true;
Container parent = getParent();
if ((parent == null) || !(parent instanceof JViewport)) return false;
return getMinimumSize().height < ((JViewport)parent).getHeight();
}
}
}