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Cobra is the rendering engine designed for LoboBrowser
/*
GNU LESSER GENERAL PUBLIC LICENSE
Copyright (C) 2006 The Lobo Project
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Contact info: [email protected]
*/
/*
* Created on Jan 15, 2006
*/
package org.cobraparser.html.renderer;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Insets;
import javax.swing.text.AttributeSet;
import javax.swing.text.BadLocationException;
import javax.swing.text.JTextComponent;
import org.cobraparser.html.domimpl.ElementImpl;
import org.cobraparser.html.domimpl.HTMLBaseInputElement;
import org.cobraparser.util.gui.WrapperLayout;
abstract class BaseInputTextControl extends BaseInputControl {
private static final long serialVersionUID = -4852316720577045230L;
private static final float DEFAULT_FONT_SIZE = 14.0f;
protected final JTextComponent widget;
public BaseInputTextControl(final HTMLBaseInputElement modelNode) {
super(modelNode);
this.setLayout(WrapperLayout.getInstance());
final JTextComponent widget = this.createTextField();
final Font font = widget.getFont();
widget.setFont(font.deriveFont(DEFAULT_FONT_SIZE));
widget.setDocument(new LimitedDocument());
// Note: Value attribute cannot be set in reset() method.
// Otherwise, layout revalidation causes typed values to
// be lost (including revalidation due to hover.)
final ElementImpl element = this.controlElement;
final String value = element.getAttribute("value");
widget.setText(value);
this.widget = widget;
this.add(widget);
}
@Override
public void reset(final int availWidth, final int availHeight) {
super.reset(availWidth, availHeight);
final String maxLengthText = this.controlElement.getAttribute("maxlength");
if (maxLengthText != null) {
try {
this.maxLength = Integer.parseInt(maxLengthText);
} catch (final NumberFormatException nfe) {
// ignore
}
}
}
protected abstract JTextComponent createTextField();
private int maxLength = -1;
/*
* (non-Javadoc)
*
* @see org.xamjwg.html.domimpl.InputContext#getMaxLength()
*/
@Override
public int getMaxLength() {
return this.maxLength;
}
/*
* (non-Javadoc)
*
* @see org.xamjwg.html.domimpl.InputContext#getReadOnly()
*/
@Override
public boolean getReadOnly() {
return !this.widget.isEditable();
}
/*
* (non-Javadoc)
*
* @see org.xamjwg.html.domimpl.InputContext#getValue()
*/
@Override
public String getValue() {
return this.widget.getText();
}
/*
* (non-Javadoc)
*
* @see org.xamjwg.html.domimpl.InputContext#select()
*/
@Override
public void select() {
this.widget.selectAll();
}
/*
* (non-Javadoc)
*
* @see org.xamjwg.html.domimpl.InputContext#setDisabled(boolean)
*/
@Override
public void setDisabled(final boolean disabled) {
super.setDisabled(disabled);
this.widget.setEnabled(!disabled);
}
/*
* (non-Javadoc)
*
* @see org.xamjwg.html.domimpl.InputContext#setMaxLength(int)
*/
@Override
public void setMaxLength(final int maxLength) {
this.maxLength = maxLength;
}
/*
* (non-Javadoc)
*
* @see org.xamjwg.html.domimpl.InputContext#setReadOnly(boolean)
*/
@Override
public void setReadOnly(final boolean readOnly) {
this.widget.setEditable(!readOnly);
}
/*
* (non-Javadoc)
*
* @see org.xamjwg.html.domimpl.InputContext#setValue(java.lang.String)
*/
@Override
public void setValue(final String value) {
this.widget.setText(value);
}
@Override
public java.awt.Dimension getPreferredSize() {
final int size = this.size;
final JTextComponent widget = this.widget;
final FontMetrics fm = widget.getFontMetrics(widget.getFont());
final Insets insets = widget.getInsets();
int pw, ph;
if (size == -1) {
pw = 100;
} else {
pw = insets.left + insets.right + (fm.charWidth('0') * size);
}
ph = fm.getHeight() + insets.top + insets.bottom;
return new java.awt.Dimension(pw, ph);
}
public void resetInput() {
this.widget.setText("");
}
/**
* Implements maxlength functionality.
*/
private class LimitedDocument extends javax.swing.text.PlainDocument {
private static final long serialVersionUID = 5095817476961455383L;
/*
* (non-Javadoc)
*
* @see javax.swing.text.PlainDocument#insertString(int, java.lang.String,
* javax.swing.text.AttributeSet)
*/
@Override
public void insertString(final int offs, final String str, final AttributeSet a) throws BadLocationException {
final int max = BaseInputTextControl.this.maxLength;
if (max != -1) {
final int docLength = this.getLength();
if (docLength >= max) {
return;
}
final int strLen = str.length();
if ((docLength + strLen) > max) {
final String shorterStr = str.substring(0, max - docLength);
super.insertString(offs, shorterStr, a);
} else {
super.insertString(offs, str, a);
}
} else {
super.insertString(offs, str, a);
}
}
}
}