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/* gtktextfieldpeer.c -- Native implementation of GtkTextFieldPeer

   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. */

#include "gtkpeer.h"

#include "gnu_java_awt_peer_gtk_GtkTextFieldPeer.h"

/* the color used for highlighting when the foreground is black,

   since black highlights aren't a Good Idea. */

#define BB_RED    16962

#define BB_GREEN  26985

#define BB_BLUE   31611

static jmethodID postTextEventID;

void

cp_gtk_textcomponent_init_jni (void)

{

  jclass gtkcomponentpeer;

  gtkcomponentpeer = (*cp_gtk_gdk_env())->FindClass (cp_gtk_gdk_env(),

                                              "gnu/java/awt/peer/gtk/GtkComponentPeer");

  postTextEventID = (*cp_gtk_gdk_env())->GetMethodID (cp_gtk_gdk_env(), gtkcomponentpeer,

                                             "postTextEvent",

                                             "()V");

}

static void textcomponent_changed_cb (GtkEditable *editable, jobject peer);

static jint get_border_width (GtkWidget *entry);

JNIEXPORT void JNICALL

Java_gnu_java_awt_peer_gtk_GtkTextFieldPeer_create

  (JNIEnv *env, jobject obj, jint text_width)

{

  GtkWidget *entry;

  gdk_threads_enter ();

  /* Create global reference and save it for future use */

  gtkpeer_set_global_ref (env, obj);

  entry = gtk_entry_new ();

  gtk_widget_set_size_request (entry,

                               text_width + 2 * get_border_width (entry), -1);

  gtkpeer_set_widget (env, obj, entry);

  gdk_threads_leave ();

}

JNIEXPORT void JNICALL

Java_gnu_java_awt_peer_gtk_GtkTextFieldPeer_connectSignals

  (JNIEnv *env, jobject obj)

{

  void *ptr;

  jobject gref;

  gdk_threads_enter ();

  ptr = gtkpeer_get_widget (env, obj);

  gref = gtkpeer_get_global_ref (env, obj);

  /* TextComponent signals */

  cp_gtk_textcomponent_connect_signals (G_OBJECT (ptr), gref);

  /* Component signals */

  cp_gtk_component_connect_signals (G_OBJECT (ptr), gref);

  gdk_threads_leave ();

}

JNIEXPORT void JNICALL

Java_gnu_java_awt_peer_gtk_GtkTextFieldPeer_gtkWidgetSetBackground

  (JNIEnv *env, jobject obj, jint red, jint green, jint blue)

{

  GdkColor color;

  void *ptr;

  gdk_threads_enter ();

  ptr = gtkpeer_get_widget (env, obj);

  color.red = (red / 255.0) * 65535;

  color.green = (green / 255.0) * 65535;

  color.blue = (blue / 255.0) * 65535;

  gtk_widget_modify_base (GTK_WIDGET (ptr), GTK_STATE_NORMAL, &color);

  gdk_threads_leave ();

}

JNIEXPORT void JNICALL

Java_gnu_java_awt_peer_gtk_GtkTextFieldPeer_gtkWidgetSetForeground

  (JNIEnv *env, jobject obj, jint red, jint green, jint blue)

{

  GdkColor color;

  void *ptr;

  gdk_threads_enter ();

  ptr = gtkpeer_get_widget (env, obj);

  color.red = (red / 255.0) * 65535;

  color.green = (green / 255.0) * 65535;

  color.blue = (blue / 255.0) * 65535;

  gtk_widget_modify_text (GTK_WIDGET (ptr), GTK_STATE_NORMAL, &color);

  if ( red == 0 && green == 0 && blue == 0)

    {

      color.red = BB_RED;

      color.green = BB_GREEN;

      color.blue = BB_BLUE;

    }

  gtk_widget_modify_base (GTK_WIDGET (ptr), GTK_STATE_SELECTED, &color);

  gdk_threads_leave ();

}

JNIEXPORT jint JNICALL

Java_gnu_java_awt_peer_gtk_GtkTextFieldPeer_gtkEntryGetBorderWidth

  (JNIEnv *env, jobject obj)

{

  void *ptr;

  int border_width = 0;

  gdk_threads_enter ();

  ptr = gtkpeer_get_widget (env, obj);

  border_width = get_border_width (GTK_WIDGET (ptr));

  gdk_threads_leave ();

  return border_width;

}

/* GTK hard-codes this value.  It is the space between a GtkEntry's

   frame and its text. */

#define INNER_BORDER 2

static jint

get_border_width (GtkWidget *entry)

{

  gint focus_width;

  gboolean interior_focus;

  int x_border_width = INNER_BORDER;

  gtk_widget_style_get (entry,

                        "interior-focus", &interior_focus,

                        "focus-line-width", &focus_width,

                        NULL);

  if (GTK_ENTRY (entry)->has_frame)

    x_border_width += entry->style->xthickness;

  if (!interior_focus)

    x_border_width += focus_width;

  return x_border_width;

}

#undef INNER_BORDER

JNIEXPORT void JNICALL

Java_gnu_java_awt_peer_gtk_GtkTextFieldPeer_setEchoChar

  (JNIEnv *env, jobject obj, jchar c)

{

  void *ptr;

  GtkEntry *entry;

  gdk_threads_enter ();

  ptr = gtkpeer_get_widget (env, obj);

  entry = GTK_ENTRY (ptr);

  if (c != 0)

    {

      /* FIXME: use gtk_entry_set_invisible_char (GtkEntry *entry,

         gunichar ch) here.  That means we must convert from jchar

         (utf16) to gunichar (ucs4). */

      gtk_entry_set_visibility (entry, FALSE);

    }

  else

    gtk_entry_set_visibility (entry, TRUE);

  gdk_threads_leave ();

}

JNIEXPORT jint JNICALL

Java_gnu_java_awt_peer_gtk_GtkTextFieldPeer_getCaretPosition

  (JNIEnv *env, jobject obj)

{

  void *ptr;

  int pos = 0;

  gdk_threads_enter ();

  ptr = gtkpeer_get_widget (env, obj);

  pos = gtk_editable_get_position (GTK_EDITABLE (ptr));

  gdk_threads_leave ();

  return pos;

}

JNIEXPORT void JNICALL

Java_gnu_java_awt_peer_gtk_GtkTextFieldPeer_setCaretPosition

  (JNIEnv *env, jobject obj, jint pos)

{

  void *ptr;

  gdk_threads_enter ();

  ptr = gtkpeer_get_widget (env, obj);

  gtk_editable_set_position (GTK_EDITABLE (ptr), pos);

  gdk_threads_leave ();

}

JNIEXPORT jint JNICALL

Java_gnu_java_awt_peer_gtk_GtkTextFieldPeer_getSelectionStart

  (JNIEnv *env, jobject obj)

{

  void *ptr;

  int pos = 0;

  int starti, endi;

  gdk_threads_enter ();

  ptr = gtkpeer_get_widget (env, obj);

  if (gtk_editable_get_selection_bounds (GTK_EDITABLE (ptr), &starti, &endi))

    pos = starti;

  else

    pos = gtk_editable_get_position (GTK_EDITABLE (ptr));

  gdk_threads_leave ();

  return pos;

}

JNIEXPORT jint JNICALL

Java_gnu_java_awt_peer_gtk_GtkTextFieldPeer_getSelectionEnd

  (JNIEnv *env, jobject obj)

{

  void *ptr;

  int pos = 0;

  int starti, endi;

  gdk_threads_enter ();

  ptr = gtkpeer_get_widget (env, obj);

  if (gtk_editable_get_selection_bounds (GTK_EDITABLE (ptr), &starti, &endi))

    pos = endi;

  else

    pos = gtk_editable_get_position (GTK_EDITABLE (ptr));

  gdk_threads_leave ();

  return pos;

}

JNIEXPORT void JNICALL

Java_gnu_java_awt_peer_gtk_GtkTextFieldPeer_select

  (JNIEnv *env, jobject obj, jint start, jint end)

{

  void *ptr;

  gdk_threads_enter ();

  ptr = gtkpeer_get_widget (env, obj);

  gtk_editable_select_region (GTK_EDITABLE (ptr), start, end);

  gdk_threads_leave ();

}

JNIEXPORT void JNICALL

Java_gnu_java_awt_peer_gtk_GtkTextFieldPeer_setEditable

  (JNIEnv *env, jobject obj, jboolean state)

{

  void *ptr;

  gdk_threads_enter ();

  ptr = gtkpeer_get_widget (env, obj);

  gtk_editable_set_editable (GTK_EDITABLE (ptr), state);

  gdk_threads_leave ();

}

JNIEXPORT jstring JNICALL

Java_gnu_java_awt_peer_gtk_GtkTextFieldPeer_getText

  (JNIEnv *env, jobject obj)

{

  void *ptr;

  char *contents = NULL;

  jstring jcontents;

  gdk_threads_enter ();

  ptr = gtkpeer_get_widget (env, obj);

  contents = gtk_editable_get_chars (GTK_EDITABLE (ptr), 0, -1);

  jcontents = (*env)->NewStringUTF (env, contents);

  g_free (contents);

  gdk_threads_leave ();

  return jcontents;

}

JNIEXPORT void JNICALL

Java_gnu_java_awt_peer_gtk_GtkTextFieldPeer_setText

  (JNIEnv *env, jobject obj, jstring contents)

{

  void *ptr;

  const char *str;

  gdk_threads_enter ();

  ptr = gtkpeer_get_widget (env, obj);

  str = (*env)->GetStringUTFChars (env, contents, NULL);

  gtk_entry_set_text (GTK_ENTRY (ptr), str);

  (*env)->ReleaseStringUTFChars (env, contents, str);

  gdk_threads_leave ();

}

void

cp_gtk_textcomponent_connect_signals (GObject *ptr, jobject gref)

{

  g_signal_connect (G_OBJECT(ptr), "changed",

                    G_CALLBACK (textcomponent_changed_cb), gref);

}

static void

textcomponent_changed_cb (GtkEditable *editable __attribute__((unused)),

                          jobject peer)

{

  (*cp_gtk_gdk_env())->CallVoidMethod (cp_gtk_gdk_env(), peer, postTextEventID);

}