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Diffstat (limited to 'libjava/classpath/javax/swing/text/html/FormView.java')
| -rw-r--r-- | libjava/classpath/javax/swing/text/html/FormView.java | 230 |
1 files changed, 230 insertions, 0 deletions
diff --git a/libjava/classpath/javax/swing/text/html/FormView.java b/libjava/classpath/javax/swing/text/html/FormView.java new file mode 100644 index 00000000000..b85c6943404 --- /dev/null +++ b/libjava/classpath/javax/swing/text/html/FormView.java @@ -0,0 +1,230 @@ +/* FormView.java -- A view for a variety of HTML form elements + Copyright (C) 2006 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath 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 2, or (at your option) +any later version. + +GNU Classpath 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 GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package javax.swing.text.html; + +import java.awt.Component; +import java.awt.event.ActionEvent; +import java.awt.event.ActionListener; + +import javax.swing.JButton; +import javax.swing.JCheckBox; +import javax.swing.JPasswordField; +import javax.swing.JRadioButton; +import javax.swing.JTextField; +import javax.swing.UIManager; +import javax.swing.text.AttributeSet; +import javax.swing.text.ComponentView; +import javax.swing.text.Element; +import javax.swing.text.StyleConstants; + +/** + * A View that renders HTML form elements like buttons and input fields. + * This is implemented as a {@link ComponentView} that creates different Swing + * component depending on the type and setting of the different form elements. + * + * Namely, this view creates the following components: + * <table> + * <tr><th>Element type</th><th>Swing component</th></tr> + * <tr><td>input, button</td><td>JButton</td></tr> + * <tr><td>input, checkbox</td><td>JButton</td></tr> + * <tr><td>input, image</td><td>JButton</td></tr> + * <tr><td>input, password</td><td>JButton</td></tr> + * <tr><td>input, radio</td><td>JButton</td></tr> + * <tr><td>input, reset</td><td>JButton</td></tr> + * <tr><td>input, submit</td><td>JButton</td></tr> + * <tr><td>input, text</td><td>JButton</td></tr> + * <tr><td>select, size > 1 or with multiple attribute</td> + * <td>JList in JScrollPane</td></tr> + * <tr><td>select, size unspecified or == 1</td><td>JComboBox</td></tr> + * <tr><td>textarea, text</td><td>JTextArea in JScrollPane</td></tr> + * <tr><td>input, file</td><td>JTextField</td></tr> + * </table> + * + * @author Roman Kennke (kennke@aicas.com) + */ +public class FormView + extends ComponentView + implements ActionListener +{ + + /** + * If the value attribute of an <code><input type="submit">> + * tag is not specified, then this string is used. + * + * @deprecated As of JDK1.3 the value is fetched from the UIManager property + * <code>FormView.submitButtonText</code>. + */ + public static final String SUBMIT = + UIManager.getString("FormView.submitButtonText"); + + /** + * If the value attribute of an <code><input type="reset">> + * tag is not specified, then this string is used. + * + * @deprecated As of JDK1.3 the value is fetched from the UIManager property + * <code>FormView.resetButtonText</code>. + */ + public static final String RESET = + UIManager.getString("FormView.resetButtonText"); + + /** + * Creates a new <code>FormView</code>. + * + * @param el the element that is displayed by this view. + */ + public FormView(Element el) + { + super(el); + } + + /** + * Creates the correct AWT component for rendering the form element. + */ + protected Component createComponent() + { + Component comp = null; + Element el = getElement(); + Object tag = el.getAttributes().getAttribute(StyleConstants.NameAttribute); + if (tag.equals(HTML.Tag.INPUT)) + { + AttributeSet atts = el.getAttributes(); + String type = (String) atts.getAttribute(HTML.Attribute.TYPE); + String value = (String) atts.getAttribute(HTML.Attribute.VALUE); + if (type.equals("button")) + comp = new JButton(value); + else if (type.equals("checkbox")) + comp = new JCheckBox(value); + else if (type.equals("image")) + comp = new JButton(value); // FIXME: Find out how to fetch the image. + else if (type.equals("password")) + comp = new JPasswordField(value); + else if (type.equals("radio")) + comp = new JRadioButton(value); + else if (type.equals("reset")) + { + if (value == null || value.equals("")) + value = RESET; + comp = new JButton(value); + } + else if (type.equals("submit")) + { + if (value == null || value.equals("")) + value = SUBMIT; + comp = new JButton(value); + } + else if (type.equals("text")) + comp = new JTextField(value); + + } + // FIXME: Implement the remaining components. + return comp; + } + + /** + * Determines the maximum span for this view on the specified axis. + * + * @param axis the axis along which to determine the span + * + * @return the maximum span for this view on the specified axis + * + * @throws IllegalArgumentException if the axis is invalid + */ + public float getMaximumSpan(int axis) + { + // FIXME: The specs say that for some components the maximum span == the + // preferred span of the component. This should be figured out and + // implemented accordingly. + float span; + if (axis == X_AXIS) + span = getComponent().getMaximumSize().width; + else if (axis == Y_AXIS) + span = getComponent().getMaximumSize().height; + else + throw new IllegalArgumentException("Invalid axis parameter"); + return span; + } + + /** + * Processes an action from the Swing component. + * + * If the action comes from a submit button, the form is submitted by calling + * {@link #submitData}. In the case of a reset button, the form is reset to + * the original state. If the action comes from a password or text field, + * then the input focus is transferred to the next input element in the form, + * unless this text/password field is the last one, in which case the form + * is submitted. + * + * @param ev the action event + */ + public void actionPerformed(ActionEvent ev) + { + Element el = getElement(); + Object tag = el.getAttributes().getAttribute(StyleConstants.NameAttribute); + if (tag.equals(HTML.Tag.INPUT)) + { + AttributeSet atts = el.getAttributes(); + String type = (String) atts.getAttribute(HTML.Attribute.TYPE); + if (type.equals("submit")) + submitData(""); // FIXME: How to fetch the actual form data? + } + // FIXME: Implement the remaining actions. + } + + /** + * Submits the form data. A separate thread is created to do the + * transmission. + * + * @param data the form data + */ + protected void submitData(String data) + { + // FIXME: Implement this. + } + + /** + * Submits the form data in response to a click on a + * <code><input type="image"></code> element. + * + * @param imageData the mouse click coordinates + */ + protected void imageSubmit(String imageData) + { + // FIXME: Implement this. + } +} |
