libjava/classpath/native/jni/gtk-peer/gnu_java_awt_peer_gtk_GtkChoicePeer.c

   1 /* gtkchoicepeer.c -- Native implementation of GtkChoicePeer
   2    Copyright (C) 1998, 1999 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19 02110-1301 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38
  39 #include "gtkpeer.h"
  40 #include "gnu_java_awt_peer_gtk_GtkChoicePeer.h"
  41
  42 static jmethodID postChoiceItemEventID;
  43
  44 void
  45 cp_gtk_choice_init_jni (void)
  46 {
  47   jclass gtkchoicepeer;
  48
  49   gtkchoicepeer = (*cp_gtk_gdk_env())->FindClass (cp_gtk_gdk_env(),
  50                                         "gnu/java/awt/peer/gtk/GtkChoicePeer");
  51
  52   postChoiceItemEventID = (*cp_gtk_gdk_env())->GetMethodID (cp_gtk_gdk_env(), gtkchoicepeer,
  53                                                "postChoiceItemEvent",
  54                                                "(Ljava/lang/String;I)V");
  55 }
  56
  57 static void selection_changed_cb (GtkComboBox *combobox, jobject peer);
  58
  59 JNIEXPORT void JNICALL
  60 Java_gnu_java_awt_peer_gtk_GtkChoicePeer_create
  61   (JNIEnv *env, jobject obj)
  62 {
  63   GtkWidget *combobox;
  64   jobject *gref;
  65
  66   gdk_threads_enter ();
  67
  68   NSA_SET_GLOBAL_REF (env, obj);
  69   gref = NSA_GET_GLOBAL_REF (env, obj);
  70
  71   combobox = gtk_combo_box_new_text ();
  72
  73   NSA_SET_PTR (env, obj, combobox);
  74
  75   gdk_threads_leave ();
  76 }
  77
  78 JNIEXPORT void JNICALL
  79 Java_gnu_java_awt_peer_gtk_GtkChoicePeer_connectSignals
  80   (JNIEnv *env, jobject obj)
  81 {
  82   void *ptr = NULL;
  83   jobject *gref = NULL;
  84
  85   gdk_threads_enter ();
  86
  87   ptr = NSA_GET_PTR (env, obj);
  88   gref = NSA_GET_GLOBAL_REF (env, obj);
  89
  90   /* Choice signals */
  91   g_signal_connect (G_OBJECT (ptr), "changed",
  92                     G_CALLBACK (selection_changed_cb), *gref);
  93
  94   /* Component signals */
  95   cp_gtk_component_connect_signals (G_OBJECT (ptr), gref);
  96
  97   gdk_threads_leave ();
  98 }
  99
 100 JNIEXPORT void JNICALL
 101 Java_gnu_java_awt_peer_gtk_GtkChoicePeer_append
 102   (JNIEnv *env, jobject obj, jobjectArray items)
 103 {
 104   gpointer ptr;
 105   jsize count, i;
 106
 107   gdk_threads_enter ();
 108
 109   ptr = NSA_GET_PTR (env, obj);
 110
 111   count = (*env)->GetArrayLength (env, items);
 112
 113   for (i = 0; i < count; i++)
 114     {
 115       jobject item;
 116       const char *label;
 117
 118       item = (*env)->GetObjectArrayElement (env, items, i);
 119       label = (*env)->GetStringUTFChars (env, item, NULL);
 120
 121       gtk_combo_box_append_text (GTK_COMBO_BOX (ptr), label);
 122
 123       (*env)->ReleaseStringUTFChars (env, item, label);
 124       (*env)->DeleteLocalRef(env, item);
 125     }
 126
 127   gdk_threads_leave ();
 128 }
 129
 130 JNIEXPORT void JNICALL
 131 Java_gnu_java_awt_peer_gtk_GtkChoicePeer_nativeAdd
 132   (JNIEnv *env, jobject obj, jstring item, jint index)
 133 {
 134   void *ptr;
 135   const char *label;
 136
 137   gdk_threads_enter ();
 138
 139   ptr = NSA_GET_PTR (env, obj);
 140
 141   label = (*env)->GetStringUTFChars (env, item, 0);
 142
 143   gtk_combo_box_insert_text (GTK_COMBO_BOX (ptr), index, label);
 144
 145   (*env)->ReleaseStringUTFChars (env, item, label);
 146
 147   gdk_threads_leave ();
 148 }
 149
 150 JNIEXPORT void JNICALL
 151 Java_gnu_java_awt_peer_gtk_GtkChoicePeer_nativeRemove
 152   (JNIEnv *env, jobject obj, jint index)
 153 {
 154   void *ptr;
 155
 156   gdk_threads_enter ();
 157
 158   ptr = NSA_GET_PTR (env, obj);
 159
 160   gtk_combo_box_remove_text (GTK_COMBO_BOX (ptr), index);
 161
 162   gdk_threads_leave ();
 163 }
 164
 165 JNIEXPORT void JNICALL
 166 Java_gnu_java_awt_peer_gtk_GtkChoicePeer_nativeRemoveAll
 167   (JNIEnv *env, jobject obj)
 168 {
 169   void *ptr;
 170   GtkTreeModel *model;
 171   gint count, i;
 172
 173   gdk_threads_enter ();
 174
 175   ptr = NSA_GET_PTR (env, obj);
 176
 177   model = gtk_combo_box_get_model (GTK_COMBO_BOX (ptr));
 178   count = gtk_tree_model_iter_n_children (model, NULL);
 179
 180   /* First, unselect everything, to avoid problems when removing items. */
 181   gtk_combo_box_set_active (GTK_COMBO_BOX (ptr), -1);
 182
 183   for (i = count - 1; i >= 0; i--) {
 184     gtk_combo_box_remove_text (GTK_COMBO_BOX (ptr), i);
 185   }
 186
 187   gdk_threads_leave ();
 188 }
 189
 190 JNIEXPORT void JNICALL
 191 Java_gnu_java_awt_peer_gtk_GtkChoicePeer_selectNative
 192   (JNIEnv *env, jobject obj, jint index)
 193 {
 194   gdk_threads_enter ();
 195
 196   Java_gnu_java_awt_peer_gtk_GtkChoicePeer_selectNativeUnlocked
 197     (env, obj, index);
 198
 199   gdk_threads_leave ();
 200 }
 201
 202 JNIEXPORT void JNICALL
 203 Java_gnu_java_awt_peer_gtk_GtkChoicePeer_selectNativeUnlocked
 204   (JNIEnv *env, jobject obj, jint index)
 205 {
 206   void *ptr;
 207
 208   ptr = NSA_GET_PTR (env, obj);
 209
 210   gtk_combo_box_set_active (GTK_COMBO_BOX (ptr), index);
 211 }
 212
 213 JNIEXPORT jint JNICALL
 214 Java_gnu_java_awt_peer_gtk_GtkChoicePeer_nativeGetSelected
 215   (JNIEnv *env, jobject obj)
 216 {
 217   void *ptr;
 218   int index;
 219
 220   gdk_threads_enter ();
 221
 222   ptr = NSA_GET_PTR (env, obj);
 223
 224   index = gtk_combo_box_get_active (GTK_COMBO_BOX (ptr));
 225
 226   gdk_threads_leave ();
 227
 228   return index;
 229 }
 230
 231 static void
 232 selection_changed_cb (GtkComboBox *combobox, jobject peer)
 233 {
 234   jstring label;
 235   GtkTreeModel *model;
 236   GtkTreeIter iter;
 237   gchar *selected;
 238   gint index;
 239
 240   index = gtk_combo_box_get_active(combobox);
 241
 242   if (index >= 0)
 243     {
 244       model = gtk_combo_box_get_model (combobox);
 245       gtk_combo_box_get_active_iter (combobox, &iter);
 246       gtk_tree_model_get (model, &iter, 0, &selected, -1);
 247       label = (*cp_gtk_gdk_env())->NewStringUTF (cp_gtk_gdk_env(), selected);
 248
 249       (*cp_gtk_gdk_env())->CallVoidMethod (cp_gtk_gdk_env(), peer,
 250                                     postChoiceItemEventID,
 251                                     label,
 252                                     (jint) AWT_ITEM_SELECTED);
 253     }
 254 }