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Diffstat (limited to 'odk/examples/DevelopersGuide/Accessibility/SSR.java')
| -rw-r--r-- | odk/examples/DevelopersGuide/Accessibility/SSR.java | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/odk/examples/DevelopersGuide/Accessibility/SSR.java b/odk/examples/DevelopersGuide/Accessibility/SSR.java new file mode 100644 index 000000000000..e1830cfa2630 --- /dev/null +++ b/odk/examples/DevelopersGuide/Accessibility/SSR.java @@ -0,0 +1,171 @@ +/************************************************************************* + * + * The Contents of this file are made available subject to the terms of + * the BSD license. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. 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. + * 3. Neither the name of Sun Microsystems, Inc. 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.event.ActionListener; +import java.awt.GridBagLayout; +import java.awt.GridBagConstraints; +import javax.swing.*; + + +/** The simple screen reader (SSR) registers at the toolkit as focus listener + and displays information about the currently focused object. +*/ +public class SSR + implements ActionListener +{ + /** Just pass the control to the SSR class. + */ + public static void main (String args[]) + { + new SSR (); + } + + + + + /** Create a new instance of the simple screen reader. + */ + public SSR () + { + Layout (); + + // Create the event handler and tell it where to display information + // about the currently focused accessible object. + maEventHandler = new EventHandler (); + maEventHandler.addObjectDisplay (maTextualDisplay); + maEventHandler.addObjectDisplay (maGraphicalDisplay); + } + + + + + /** Setup the GUI. It is divided into three areas. The lower half is + ocupied by a message area that logs all the events received from + accessibility objects. The upper half is shared by two different + displays of the currently focused object. On left there is a textual + representation. On the right there is a graphical view of the + objects's outline. + */ + private void Layout () + { + GridBagConstraints constraints; + + JPanel aPanel = new JPanel (true); + aPanel.setLayout (new GridBagLayout()); + aPanel.setOpaque (true); + + mFrame = new JFrame ("Simple Screen Reader 0.3"); + mFrame.setContentPane(aPanel); + mFrame.setSize (600,400); + + + addComponent (new JLabel ("Focused Object:"), + 0,0, 1,1, 0,0, GridBagConstraints.WEST, GridBagConstraints.NONE); + + + maTextualDisplay = new TextualDisplay (); + addComponent (maTextualDisplay, + 0,1, 1,1, 1,1, GridBagConstraints.CENTER, GridBagConstraints.BOTH); + + maGraphicalDisplay = new GraphicalDisplay (); + addComponent (maGraphicalDisplay, + 1,0, 1,2, 1,1, GridBagConstraints.CENTER, GridBagConstraints.BOTH); + + addComponent (new JLabel ("Messages:"), + 0,2, 1,1, 0,0, GridBagConstraints.WEST, GridBagConstraints.NONE); + + addComponent (MessageArea.Instance(), + 0,3, 2,1, 1,1, GridBagConstraints.CENTER, GridBagConstraints.BOTH); + + + JButton aButton = new JButton ("Quit SSR"); + addComponent (aButton, + 0,4, 1,1, 0,0, GridBagConstraints.WEST,GridBagConstraints.NONE); + aButton.addActionListener (this); + + mFrame.show(); + } + + + + + /** Add a GUI element with the given constraints to the main window. + */ + private JComponent addComponent (JComponent aComponent, + int x, int y, int width, int height, double weightx, double weighty, + int anchor, int fill) + { + aComponent.setDoubleBuffered (false); + GridBagConstraints aConstraints = new GridBagConstraints(); + aConstraints.gridx = x; + aConstraints.gridy = y; + aConstraints.gridwidth = width; + aConstraints.gridheight = height; + aConstraints.weightx = weightx; + aConstraints.weighty = weighty; + aConstraints.anchor = anchor; + aConstraints.fill = fill; + + mFrame.getContentPane().add (aComponent, aConstraints); + + return aComponent; + } + + + + + /** This call-back handles button presses. + */ + public void actionPerformed (java.awt.event.ActionEvent e) + { + if (e.getActionCommand().equals ("Quit SSR")) + { + maEventHandler.finalize (); + System.exit(0); + } + } + + + /// The main frame that contains all other GUI elements. + private JFrame mFrame; + + /// A textutal representation of the currently focused object. + private TextualDisplay maTextualDisplay; + + /// A graphical representation of the currently focused object. + private GraphicalDisplay maGraphicalDisplay; + + /// The event handler that reacts to all the accessibility events. + private EventHandler maEventHandler; +} |