в 17:44, 31 мая 2010

2010-05-31T17:44:27Z

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== Adding JToolTip to component ==

Tooltip text is normally one line long.
Calling the public void setToolTipText(String text) method from JComponent to create a tooltip.



<source lang="java">
import javax.swing.JButton;
import javax.swing.JFrame;
public class ToolTipDemo {
public static void main(String args[]) {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JButton b = new JButton("Hello, World");
frame.add(b,"Center");
b.setToolTipText("asdf");
frame.setSize(300, 200);
frame.setVisible(true);
}
}</source>



== By default, the lines are left justified. Center the lines. ==



<source lang="java">
import javax.swing.JButton;
public class Main {
public static void main(String[] argv) throws Exception {
JButton component = new JButton();
component.setToolTipText("<html><center>" + "This is a" + " " + "tool tip"
+ "</center></html>");
}
}</source>



== Creating Customized JToolTip Objects: customize and override its inherited public JToolTip createToolTip() ==



<source lang="java">
import java.awt.Color;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JToolTip;
public class ToolTipBackgroundForeground {
public static void main(String args[]) {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JButton b = new JButton("Hello, World") {
public JToolTip createToolTip() {
JToolTip tip = super.createToolTip();
tip.setBackground(Color.YELLOW);
tip.setForeground(Color.RED);
return tip;
}
};
frame.add(b,"Center");
b.setToolTipText("asdf");
frame.setSize(300, 200);
frame.setVisible(true);
}
}</source>



== Creating HTML 3.2 formatted text tooltip: the text string begins with "html" in any case ==



<source lang="java">
import java.awt.Color;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JToolTip;
public class ToolTipHTML {
public static void main(String args[]) {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JButton b = new JButton("Hello, World");
frame.add(b,"Center");
b.setToolTipText("<html>asdfbold</html>");
frame.setSize(300, 200);
frame.setVisible(true);
}
}</source>



== Customizing a JToolTip Look and Feel ==

Property StringObject TypeToolTip.backgroundColorToolTip.backgroundInactiveColorToolTip.borderBorderToolTip.borderInactiveColorToolTip.fontFontToolTip.foregroundColorToolTip.foregroundInactiveColorToolTip.hideAcceleratorBooleanToolTipUIString

== Disable / enable application tool tips ==



<source lang="java">
import java.awt.FlowLayout;
import java.awt.HeadlessException;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.ToolTipManager;
public class Main extends JFrame {
public Main() throws HeadlessException {
setSize(300, 300);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
getContentPane().setLayout(new FlowLayout(FlowLayout.CENTER));
JButton disable = new JButton("DISABLE");
disable.setToolTipText("disabled.");
disable.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
ToolTipManager.sharedInstance().setEnabled(false);
}
});
JButton enable = new JButton("ENABLE");
enable.setToolTipText("enabled.");
enable.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
ToolTipManager.sharedInstance().setEnabled(true);
}
});
getContentPane().add(enable);
getContentPane().add(disable);
}
public static void main(String[] args) {
new Main().setVisible(true);
}
}</source>



== Displaying Mnemonics in tooltip text ==



<source lang="java">
import java.awt.event.KeyEvent;
import javax.swing.JButton;
import javax.swing.JFrame;
public class MnemonicButton {
public static void main(String args[]) {
JFrame frame = new JFrame("DefaultButton");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JButton button1 = new JButton("Text Button");
button1.setMnemonic(KeyEvent.VK_B);
frame.add(button1);
frame.setSize(300, 200);
frame.setVisible(true);
}
}</source>



== Displaying Positional Tooltip Text: display different tooltip depending on the mouse pointer"s location ==



<source lang="java">
import javax.swing.JButton;
import javax.swing.JFrame;
public class DisplayingPositionalTooltip {
public static void main(String args[]) {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JButton button = new JButton("Hello, World") {
public boolean contains(int x, int y) {
if (x < 50) {
setToolTipText("AAAAAAAAA");
} else {
setToolTipText("BBBBBBBBBBBBBB");
}
return super.contains(x, y);
}
};
frame.add(button, "Center");
frame.setSize(300, 200);
frame.setVisible(true);
}
}</source>



== Enabling and Disabling Tool Tips ==



<source lang="java">
import javax.swing.ToolTipManager;
public class Main {
public static void main(String[] argv) throws Exception {
// Enable tool tips for the entire application
ToolTipManager.sharedInstance().setEnabled(true);
// Disable tool tips for the entire application
ToolTipManager.sharedInstance().setEnabled(false);
}
}</source>



== Italicize the second line ==



<source lang="java">
import javax.swing.JButton;
public class Main {
public static void main(String[] argv) throws Exception {
JButton component = new JButton();
component.setToolTipText("<html>" + "This is a" + " " + "tool tip" + "</html>");
}
}</source>



== Label with tooltip ==



<source lang="java">
/*
* Copyright (c) 1995 - 2008 Sun Microsystems, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of Sun Microsystems nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
import java.awt.GridLayout;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
/*
* LabelDemo.java needs one other file: images/middle.gif
*/
public class LabelDemo extends JPanel {
public LabelDemo() {
super(new GridLayout(3, 1)); // 3 rows, 1 column
JLabel label1, label2, label3;
ImageIcon icon = createImageIcon("images/middle.gif",
"a pretty but meaningless splat");
// Create the first label.
label1 = new JLabel("Image and Text", icon, JLabel.CENTER);
// Set the position of its text, relative to its icon:
label1.setVerticalTextPosition(JLabel.BOTTOM);
label1.setHorizontalTextPosition(JLabel.CENTER);
// Create the other labels.
label2 = new JLabel("Text-Only Label");
label3 = new JLabel(icon);
// Create tool tips, for the heck of it.
label1.setToolTipText("A label containing both image and text");
label2.setToolTipText("A label containing only text");
label3.setToolTipText("A label containing only an image");
// Add the labels.
add(label1);
add(label2);
add(label3);
}
/** Returns an ImageIcon, or null if the path was invalid. */
protected static ImageIcon createImageIcon(String path, String description) {
java.net.URL imgURL = LabelDemo.class.getResource(path);
if (imgURL != null) {
return new ImageIcon(imgURL, description);
} else {
System.err.println("Couldn"t find file: " + path);
return null;
}
}
/**
* Create the GUI and show it. For thread safety, this method should be
* invoked from the event dispatch thread.
*/
private static void createAndShowGUI() {
// Create and set up the window.
JFrame frame = new JFrame("LabelDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// Add content to the window.
frame.add(new LabelDemo());
// Display the window.
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
// Schedule a job for the event dispatch thread:
// creating and showing this application"s GUI.
SwingUtilities.invokeLater(new Runnable() {
public void run() {
// Turn off metal"s use of bold fonts
UIManager.put("swing.boldMetal", Boolean.FALSE);
createAndShowGUI();
}
});
}
}</source>



== Make a tool tips appear immediately ==



<source lang="java">
import javax.swing.ToolTipManager;
public class Main {
public static void main(String[] argv) throws Exception {
// Get current delay
int initialDelay = ToolTipManager.sharedInstance().getInitialDelay();
// Show tool tips immediately
ToolTipManager.sharedInstance().setInitialDelay(0);
// Show tool tips after a second
initialDelay = 1000;
ToolTipManager.sharedInstance().setInitialDelay(initialDelay);
}
}</source>



== Making Tool Tips Remain Visible ==



<source lang="java">
import javax.swing.ToolTipManager;
public class Main {
public static void main(String[] argv) throws Exception {
// Get current delay
int dismissDelay = ToolTipManager.sharedInstance().getDismissDelay();
// Keep the tool tip showing
dismissDelay = Integer.MAX_VALUE;
ToolTipManager.sharedInstance().setDismissDelay(dismissDelay);
}
}</source>



== Modify the behaviour of the default JToolTip ==



<source lang="java">
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Point;
import java.awt.event.MouseEvent;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JToolTip;
public class Main {
public static void main(String args[]) {
JFrame frame = new JFrame("JToolTip Sample");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JButton b1 = new JButton("Button 1") {
public JToolTip createToolTip() {
JToolTip tip = super.createToolTip();
tip.setForeground(Color.YELLOW);
return tip;
}
public Point getToolTipLocation(MouseEvent event) {
return new Point((event.getX() + 100), (event.getY() + 100));
}
};
b1.setToolTipText("HELLO");
frame.add(b1, BorderLayout.NORTH);
frame.setSize(300, 150);
frame.setVisible(true);
}
}</source>



== Set the location of the tool tip such that its nw corner coincides with the bottom center of the button ==



<source lang="java">
import java.awt.Point;
import java.awt.event.MouseEvent;
import javax.swing.JButton;
public class Main {
public static void main(String[] argv) throws Exception {
JButton button = new JButton("My Button") {
public Point getToolTipLocation(MouseEvent event) {
return new Point(getWidth() / 2, getHeight());
}
};
}
}</source>



== Setting the Location of a Tool Tip ==



<source lang="java">
import java.awt.Point;
import java.awt.event.MouseEvent;
import javax.swing.JButton;
public class Main {
public static void main(String[] argv) throws Exception {
JButton button = new JButton("My Button") {
public Point getToolTipLocation(MouseEvent event) {
return new Point(0, 0);
}
};
}
}</source>



== Showing an Image in a Tool Tip ==



<source lang="java">
import javax.swing.JButton;
public class Main {
public static void main(String[] argv) throws Exception {
JButton component = new JButton();
String imageName = "file:image.jpg";
component.setToolTipText("<html>Here is an image <img src=" + imageName + "></html>");
}
}</source>



== Showing Multiple Lines in a Tool Tip ==



<source lang="java">
import javax.swing.JButton;
public class Main {
public static void main(String[] argv) throws Exception {
JButton component = new JButton();
component.setToolTipText("<html>" + "This is a" + " " + "tool tip" + "</html>");
}
}</source>



== Use images in tooltips ==



<source lang="java">
import javax.swing.JFrame;
import javax.swing.JLabel;
public class Main {
public static void main(String[] args) {
JFrame frame = new JFrame();
JLabel label = new JLabel("Label with image in Tooltip!");
label.setToolTipText("<html><img src=\"" + Main.class.getResource("tooltip.gif")
+ "\"> Tooltip ");
label.setHorizontalAlignment(JLabel.CENTER);
frame.setContentPane(label);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setBounds(100, 100, 200, 100);
frame.setVisible(true);
}
}</source>



== Use the default tool tip location ==



<source lang="java">
import java.awt.Point;
import java.awt.event.MouseEvent;
import javax.swing.JButton;
public class Main {
public static void main(String[] argv) throws Exception {
JButton button = new JButton("My Button") {
public Point getToolTipLocation(MouseEvent event) {
return null;
}
};
// Set the tool tip text
button.setToolTipText("aString");
}
}</source>

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