InputTextAreaControl.java

/*
    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: lobochief@users.sourceforge.net
 */
/*
 * Created on Jan 15, 2006
 */
package org.lobobrowser.html.renderer;

import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Insets;

import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.text.JTextComponent;

import org.lobobrowser.html.domimpl.ElementImpl;
import org.lobobrowser.html.domimpl.HTMLBaseInputElement;
import org.lobobrowser.util.gui.WrapperLayout;

class InputTextAreaControl extends BaseInputControl {
  private static final long serialVersionUID = -3789900200642578384L;
  private final JTextComponent widget;

  public InputTextAreaControl(final HTMLBaseInputElement modelNode) {
    super(modelNode);
    this.setLayout(WrapperLayout.getInstance());
    final JTextComponent widget = this.createTextField();
    this.widget = widget;
    this.add(new JScrollPane(widget));

    // 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.getTextContent();
    ((JTextArea) widget).setLineWrap(true);
    widget.setText(value);
  }

  @Override
  public void reset(final int availWidth, final int availHeight) {
    super.reset(availWidth, availHeight);
    final ElementImpl element = this.controlElement;
    final String colsStr = element.getAttribute("cols");
    if (colsStr != null) {
      try {
        this.setCols(Integer.parseInt(colsStr));
      } catch (final NumberFormatException nfe) {
        // ignore
      }
    }
    final String rowsStr = element.getAttribute("rows");
    if (rowsStr != null) {
      try {
        this.setRows(Integer.parseInt(rowsStr));
      } catch (final NumberFormatException nfe) {
        // ignore
      }
    }
  }

  protected JTextComponent createTextField() {
    return new JTextArea();
  }

  /*
   * (non-Javadoc)
   *
   * @see org.xamjwg.html.renderer.BaseInputControl#getCols()
   */
  @Override
  public int getCols() {
    return this.cols;
  }

  /*
   * (non-Javadoc)
   *
   * @see org.xamjwg.html.renderer.BaseInputControl#getRows()
   */
  @Override
  public int getRows() {
    return this.rows;
  }

  private int cols = -1;
  private int rows = -1;

  /*
   * (non-Javadoc)
   *
   * @see org.xamjwg.html.renderer.BaseInputControl#setCols(int)
   */
  @Override
  public void setCols(final int cols) {
    if (cols != this.cols) {
      this.cols = cols;
      this.invalidate();
    }
  }

  /*
   * (non-Javadoc)
   *
   * @see org.xamjwg.html.renderer.BaseInputControl#setRows(int)
   */
  @Override
  public void setRows(final int rows) {
    if (rows != this.rows) {
      this.rows = rows;
      this.invalidate();
    }
  }

  @Override
  public java.awt.Dimension getPreferredSize() {
    int pw;
    final int cols = this.cols;
    if (cols == -1) {
      pw = 100;
    } else {
      final Font f = this.widget.getFont();
      final FontMetrics fm = this.widget.getFontMetrics(f);
      final Insets insets = this.widget.getInsets();
      pw = insets.left + insets.right + (fm.charWidth('*') * cols);
    }
    int ph;
    final int rows = this.rows;
    if (rows == -1) {
      ph = 100;
    } else {
      final Font f = this.widget.getFont();
      final FontMetrics fm = this.widget.getFontMetrics(f);
      final Insets insets = this.widget.getInsets();
      ph = insets.top + insets.bottom + (fm.getHeight() * rows);
    }
    return new java.awt.Dimension(pw, ph);

  }

  /*
   * (non-Javadoc)
   *
   * @see org.xamjwg.html.renderer.BaseInputControl#getReadOnly()
   */
  @Override
  public boolean getReadOnly() {
    return !this.widget.isEditable();
  }

  /*
   * (non-Javadoc)
   *
   * @see org.xamjwg.html.renderer.BaseInputControl#getValue()
   */
  @Override
  public String getValue() {
    final String text = this.widget.getText();
    return org.lobobrowser.util.Strings.getCRLFString(text);
  }

  /*
   * (non-Javadoc)
   *
   * @see org.xamjwg.html.renderer.BaseInputControl#setReadOnly(boolean)
   */
  @Override
  public void setReadOnly(final boolean readOnly) {
    this.widget.setEditable(readOnly);
  }

  /*
   * (non-Javadoc)
   *
   * @see org.xamjwg.html.renderer.BaseInputControl#setValue(java.lang.String)
   */
  @Override
  public void setValue(final String value) {
    this.widget.setText(value);
  }

  public void resetInput() {
    this.widget.setText("");
  }
}