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/*
* Copyright (c) 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
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.apple.laf;
import java.awt.*;
import javax.swing.*;
import javax.swing.plaf.UIResource;
import sun.swing.SwingUtilities2;
class AquaComboBoxRenderer extends AquaComboBoxRendererInternal implements UIResource {
public AquaComboBoxRenderer(final JComboBox comboBox) {
super(comboBox);
}
}
class AquaComboBoxRendererInternal extends JLabel implements ListCellRenderer {
final JComboBox fComboBox;
boolean fSelected;
boolean fChecked;
boolean fInList;
boolean fEditable;
boolean fDrawCheckedItem = true;
// Provides space for a checkbox, and is translucent
public AquaComboBoxRendererInternal(final JComboBox comboBox) {
super();
fComboBox = comboBox;
}
// Don't include checkIcon space, because this is also used for button size calculations
// - the popup-size calc will get checkIcon space from getInsets
public Dimension getPreferredSize() {
// From BasicComboBoxRenderer - trick to avoid zero-height items
final Dimension size;
final String text = getText();
if ((text == null) || ("".equals(text))) {
setText(" ");
size = super.getPreferredSize();
setText("");
} else {
size = super.getPreferredSize();
}
return size;
}
// Don't paint the border here, it gets painted by the UI
protected void paintBorder(final Graphics g) {
}
public int getBaseline(int width, int height) {
return super.getBaseline(width, height) - 1;
}
// Really means is the one with the mouse over it
public Component getListCellRendererComponent(final JList list, final Object value, int index, final boolean isSelected, final boolean cellHasFocus) {
fInList = (index >= 0); // When the button wants the item painted, it passes in -1
fSelected = isSelected;
if (index < 0) {
index = fComboBox.getSelectedIndex();
}
// changed this to not ask for selected index but directly compare the current item and selected item
// different from basic because basic has no concept of checked, just has the last one selected,
// and the user changes selection. We have selection and a check mark.
// we used to call fComboBox.getSelectedIndex which ends up being a very bad call for large checkboxes
// it does a linear compare of every object in the checkbox until it finds the selected one, so if
// we have a 5000 element list we will 5000 * (selected index) .equals() of objects.
// See Radar #3141307
// Fix for Radar # 3204287 where we ask for an item at a negative index!
if (index >= 0) {
final Object item = fComboBox.getItemAt(index);
fChecked = fInList && item != null && item.equals(fComboBox.getSelectedItem());
} else {
fChecked = false;
}
fEditable = fComboBox.isEditable();
if (isSelected) {
if (fEditable) {
setBackground(UIManager.getColor("List.selectionBackground"));
setForeground(UIManager.getColor("List.selectionForeground"));
} else {
setBackground(list.getSelectionBackground());
setForeground(list.getSelectionForeground());
}
} else {
if (fEditable) {
setBackground(UIManager.getColor("List.background"));
setForeground(UIManager.getColor("List.foreground"));
} else {
setBackground(list.getBackground());
setForeground(list.getForeground());
}
}
setFont(list.getFont());
if (value instanceof Icon) {
setIcon((Icon)value);
} else {
setText((value == null) ? " " : value.toString());
}
return this;
}
public Insets getInsets(Insets insets) {
if (insets == null) insets = new Insets(0, 0, 0, 0);
insets.top = 1;
insets.bottom = 1;
insets.right = 5;
insets.left = (fInList && !fEditable ? 16 + 7 : 5);
return insets;
}
protected void setDrawCheckedItem(final boolean drawCheckedItem) {
this.fDrawCheckedItem = drawCheckedItem;
}
// Paint this component, and a checkbox if it's the selected item and not in the button
protected void paintComponent(final Graphics g) {
if (fInList) {
if (fSelected && !fEditable) {
AquaMenuPainter.instance().paintSelectedMenuItemBackground(g, getWidth(), getHeight());
} else {
g.setColor(getBackground());
g.fillRect(0, 0, getWidth(), getHeight());
}
if (fChecked && !fEditable && fDrawCheckedItem) {
final int y = getHeight() - 4;
g.setColor(getForeground());
SwingUtilities2.drawString(fComboBox, g, "\u2713", 6, y);
}
}
super.paintComponent(g);
}
}
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