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/* GtkTextAreaPeer.java -- Implements TextAreaPeer with GTK

   Copyright (C) 1998, 1999, 2002 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 gnu.java.awt.peer.gtk;

import java.awt.Dimension;

import java.awt.Font;

import java.awt.FontMetrics;

import java.awt.Rectangle;

import java.awt.TextArea;

import java.awt.im.InputMethodRequests;

import java.awt.peer.TextAreaPeer;

import java.awt.peer.TextComponentPeer;

public class GtkTextAreaPeer extends GtkComponentPeer

  implements TextComponentPeer, TextAreaPeer

{

  private static transient int DEFAULT_ROWS = 10;

  private static transient int DEFAULT_COLS = 80;

  native void create (int width, int height, int scrollbarVisibility);

  native void gtkWidgetModifyFont (String name, int style, int size);

  native void gtkWidgetRequestFocus ();

  public native void connectSignals ();

  public native int getCaretPosition ();

  public native void setCaretPosition (int pos);

  public native int getSelectionStart ();

  public native int getSelectionEnd ();

  public native String getText ();

  public native void select (int start, int end);

  public native void setEditable (boolean state);

  public native void setText (String text);

  public int getIndexAtPoint(int x, int y)

  {

    // FIXME

    return 0;

  }

  public Rectangle getCharacterBounds (int pos)

  {

    // FIXME

    return null;

  }

  public long filterEvents (long filter)

  {

    // FIXME

    return filter;

  }

  void create ()

  {

    Font f = awtComponent.getFont ();

    // By default, Sun sets a TextArea's font when its peer is

    // created.  If f != null then the peer's font is set by

    // GtkComponent.create.

    if (f == null)

      {

        f = new Font ("Dialog", Font.PLAIN, 12);

        awtComponent.setFont (f);

      }

    FontMetrics fm = getFontMetrics (f);

    TextArea ta = ((TextArea) awtComponent);

    int sizeRows = ta.getRows ();

    int sizeCols = ta.getColumns ();

    sizeRows = sizeRows == 0 ? DEFAULT_ROWS : sizeRows;

    sizeCols = sizeCols == 0 ? DEFAULT_COLS : sizeCols;

    int width = sizeCols * fm.getMaxAdvance ();

    int height = sizeRows * (fm.getMaxDescent () + fm.getMaxAscent ());

    create (width, height, ta.getScrollbarVisibility ());

    setEditable (ta.isEditable ());

  }

  public GtkTextAreaPeer (TextArea ta)

  {

    super (ta);

    setText (ta.getText ());

    setCaretPosition (0);

  }

  public native void insert (String str, int pos);

  public native void replaceRange (String str, int start, int end);

  public Dimension getMinimumSize (int rows, int cols)

  {

    return minimumSize (rows == 0 ? DEFAULT_ROWS : rows,

                        cols == 0 ? DEFAULT_COLS : cols);

  }

  public Dimension getPreferredSize (int rows, int cols)

  {

    return preferredSize (rows == 0 ? DEFAULT_ROWS : rows,

                          cols == 0 ? DEFAULT_COLS : cols);

  }

  native int getHScrollbarHeight ();

  native int getVScrollbarWidth ();

  // Deprecated

  public Dimension minimumSize (int rows, int cols)

  {

    TextArea ta = ((TextArea) awtComponent);

    int height = 0;

    int width = 0;

    if (ta.getScrollbarVisibility () == TextArea.SCROLLBARS_BOTH

        || ta.getScrollbarVisibility () == TextArea.SCROLLBARS_HORIZONTAL_ONLY)

      height = getHScrollbarHeight ();

    if (ta.getScrollbarVisibility () == TextArea.SCROLLBARS_BOTH

        || ta.getScrollbarVisibility () == TextArea.SCROLLBARS_VERTICAL_ONLY)

      width = getVScrollbarWidth ();

    Font f = awtComponent.getFont ();

    if (f == null)

      return new Dimension (width, height);

    FontMetrics fm = getFontMetrics (f);

    int sizeRows = rows == 0 ? DEFAULT_ROWS : rows;

    int sizeCols = cols == 0 ? DEFAULT_COLS : cols;

    width += sizeCols * fm.getMaxAdvance ();

    height += sizeRows * (fm.getMaxDescent () + fm.getMaxAscent ());

    return new Dimension (width, height);

  }

  public Dimension preferredSize (int rows, int cols)

  {

    TextArea ta = ((TextArea) awtComponent);

    int height = 0;

    int width = 0;

    if (ta.getScrollbarVisibility () == TextArea.SCROLLBARS_BOTH

        || ta.getScrollbarVisibility () == TextArea.SCROLLBARS_HORIZONTAL_ONLY)

      height = getHScrollbarHeight ();

    if (ta.getScrollbarVisibility () == TextArea.SCROLLBARS_BOTH

        || ta.getScrollbarVisibility () == TextArea.SCROLLBARS_VERTICAL_ONLY)

      width = getVScrollbarWidth ();

    Font f = awtComponent.getFont ();

    if (f == null)

      return new Dimension (width, height);

    FontMetrics fm = getFontMetrics (f);

    int sizeRows = rows == 0 ? DEFAULT_ROWS : rows;

    int sizeCols = cols == 0 ? DEFAULT_COLS : cols;

    width += sizeCols * fm.getMaxAdvance ();

    height += sizeRows * (fm.getMaxDescent () + fm.getMaxAscent ());

    return new Dimension (width, height);

  }

  public void replaceText (String str, int start, int end)

  {

    replaceRange (str, start, end);

  }

  public void insertText (String str, int pos)

  {

    insert (str, pos);

  }

  public InputMethodRequests getInputMethodRequests()

  {

      // FIXME: implement

    return null;

  }

}