GtkChoicePeer.java (postItemEvent): Rename to...

2003-12-22  Fernando Nasser  <fnasser@redhat.com>

        * gnu/java/awt/peer/gtk/GtkChoicePeer.java (postItemEvent): Rename to...        (choicePostItemEvent): Change signature to more specific String object.
        * java/awt/Choice.java (add): Generate ItemEvent for the first item
        added.
        (insert): Generate ItemEvent if insertion caused
        selection to change.
        (remove): Generate ItemEvent if removal cause selection to change.
        (removeAll): Change algorithm to prevent generation of ItemEvents.
        * jni/gtk-peer/gnu_java_awt_peer_gtk_GtkChoicePeer.c
        (connect_choice_item_selectable_hook): Change argument type.
        Fix argument value.
        Make sure resources are feed by registering callback.
        (Java_gnu_java_awt_peer_gtk_GtkChoicePeer_append): Adjust call to the
        above function.
        (Java_gnu_java_awt_peer_gtk_GtkChoicePeer_add): Ditto.
        (item_activate): Ditto.
        (Java_gnu_java_awt_peer_gtk_GtkChoicePeer_remove): Destroy removed
        menuitem.
        (item_removed): New function.  Free resources.
        * jni/gtk-peer/gtkpeer.h (item_event_hook_info): Change member type and
        name.
        * jni/gtk-peer/gnu_java_awt_peer_gtk_GtkMainThread.c
        (Java_gnu_java_awt_peer_gtk_GtkMainThread_gtkInit): Obtain MethodID for
        choicePostItemEvent.

From-SVN: r74979

libjava/ChangeLog

+2003-12-22  Fernando Nasser  <fnasser@redhat.com>
+
+	* gnu/java/awt/peer/gtk/GtkChoicePeer.java (postItemEvent): Rename to...
+	(choicePostItemEvent): Change signature to more specific String object.
+	* java/awt/Choice.java (add): Generate ItemEvent for the first item
+	added.
+	(insert): Generate ItemEvent if insertion caused
+	selection to change.
+	(remove): Generate ItemEvent if removal cause selection to change.
+	(removeAll): Change algorithm to prevent generation of ItemEvents.
+	* jni/gtk-peer/gnu_java_awt_peer_gtk_GtkChoicePeer.c
+	(connect_choice_item_selectable_hook): Change argument type.
+	Fix argument value.
+	Make sure resources are feed by registering callback.
+	(Java_gnu_java_awt_peer_gtk_GtkChoicePeer_append): Adjust call to the
+	above function.
+	(Java_gnu_java_awt_peer_gtk_GtkChoicePeer_add): Ditto.
+	(item_activate): Ditto.
+	(Java_gnu_java_awt_peer_gtk_GtkChoicePeer_remove): Destroy removed
+	menuitem.
+	(item_removed): New function.  Free resources.
+	* jni/gtk-peer/gtkpeer.h (item_event_hook_info): Change member type and
+	name.
+	* jni/gtk-peer/gnu_java_awt_peer_gtk_GtkMainThread.c
+	(Java_gnu_java_awt_peer_gtk_GtkMainThread_gtkInit): Obtain MethodID for
+	choicePostItemEvent.
+
 2003-12-23  Michael Koch  <konqueror@gmx.de>
 
 	* javax/print/attribute/standard/Copies.java,

libjava/gnu/java/awt/peer/gtk/GtkChoicePeer.java

@@ -84,10 +84,10 @@ public class GtkChoicePeer extends GtkComponentPeer
   }
   */
 
-  protected void postItemEvent (Object item, int stateChange)
+  protected void choicePostItemEvent (String label, int stateChange)
   {
     if (stateChange == ItemEvent.SELECTED)
-      ((Choice) awtComponent).select ((String) item);
-    super.postItemEvent (item, stateChange);
+      ((Choice) awtComponent).select (label);
+    super.postItemEvent (label, stateChange);
   }
 }

libjava/java/awt/Choice.java

@@ -171,7 +171,15 @@ add(String item)
     }
 
   if (i == 0)
-    select (0);
+  {
+    selectedIndex = 0;
+    // We must generate an ItemEvent here
+    Toolkit.getDefaultToolkit().getSystemEventQueue().postEvent (
+      new ItemEvent ((ItemSelectable)this, 
+                     ItemEvent.ITEM_STATE_CHANGED,
+                     getItem(0),
+                     ItemEvent.SELECTED));
+  }
 }
 
 /*************************************************************************/
@@ -223,7 +231,15 @@ insert(String item, int index)
     }
 
   if (getItemCount () == 1 || selectedIndex >= index)
+  {
     select (0);
+    // We must generate an ItemEvent here
+    Toolkit.getDefaultToolkit().getSystemEventQueue().postEvent (
+      new ItemEvent ((ItemSelectable)this, 
+                     ItemEvent.ITEM_STATE_CHANGED,
+                     getItem(0),
+                     ItemEvent.SELECTED));
+  }
 }
 
 /*************************************************************************/
@@ -265,8 +281,16 @@ remove(int index)
       cp.remove (index);
     }
 
-  if (index == selectedIndex)
+  if ((index == selectedIndex) && (getItemCount() > 0))
+  {
     select (0);
+    // We must generate an ItemEvent here
+    Toolkit.getDefaultToolkit().getSystemEventQueue().postEvent (
+      new ItemEvent ((ItemSelectable)this, 
+                     ItemEvent.ITEM_STATE_CHANGED,
+                     getItem(0),
+                     ItemEvent.SELECTED));
+  }
   else if (selectedIndex > index)
     --selectedIndex;
 }
@@ -281,11 +305,27 @@ removeAll()
 {
   int count = getItemCount();
 
-  for (int i = 0; i < count; i++)
+  if (count <= 0)
+    return;
+  
+  ChoicePeer cp = (ChoicePeer) peer;
+
+  // Select the first item to prevent an spurious ItemEvent to be generated
+  if (cp != null)
+    {
+      cp.select (0);
+      selectedIndex = 0; // Just to keep consistent
+    }
+
+  for (int i = (count - 1); i >= 0; i--)
     {
-      // Always remove 0.
-      remove(0);
+      // Always remove the last to avoid generation of ItemEvents.
+      pItems.removeElementAt(i);
+      if (cp != null)
+        cp.remove (i);
     }
+
+  selectedIndex = -1;
 }
 
 /*************************************************************************/

libjava/jni/gtk-peer/gnu_java_awt_peer_gtk_GtkChoicePeer.c

@@ -41,8 +41,9 @@ exception statement from your version. */
 
 static void connect_choice_item_selectable_hook (JNIEnv *env, 
 						 jobject peer_obj, 
-						 GtkItem *item, 
-						 jobject item_obj);
+						 GtkItem *menuitem, 
+						 const char *label);
+
 JNIEXPORT void JNICALL 
 Java_gnu_java_awt_peer_gtk_GtkChoicePeer_create 
   (JNIEnv *env, jobject obj)
@@ -101,14 +102,13 @@ Java_gnu_java_awt_peer_gtk_GtkChoicePeer_append
       label = (*env)->GetStringUTFChars (env, item, NULL);
 
       menuitem = gtk_menu_item_new_with_label (label);
-
-      (*env)->ReleaseStringUTFChars (env, item, label);
-
       gtk_menu_append (menu, menuitem);
       gtk_widget_show (menuitem);
 
       connect_choice_item_selectable_hook (env, obj, 
-					   GTK_ITEM (menuitem), item);
+					   GTK_ITEM (menuitem), label);
+
+      (*env)->ReleaseStringUTFChars (env, item, label);
     }
   
   if (need_set_history)
@@ -139,7 +139,8 @@ Java_gnu_java_awt_peer_gtk_GtkChoicePeer_add
   menuitem = gtk_menu_item_new_with_label (label);
   gtk_menu_insert (GTK_MENU (menu), menuitem, index);
   gtk_widget_show (menuitem);
-  connect_choice_item_selectable_hook (env, obj, GTK_ITEM (menuitem), item);
+
+  connect_choice_item_selectable_hook (env, obj, GTK_ITEM (menuitem), label);
 
   if (need_set_history)
     gtk_option_menu_set_history (GTK_OPTION_MENU (ptr), 0);
@@ -155,14 +156,19 @@ Java_gnu_java_awt_peer_gtk_GtkChoicePeer_remove
 {
   void *ptr;
   GtkContainer *menu;
+  GtkWidget *menuitem;
   GList *children;
 
   ptr = NSA_GET_PTR (env, obj);
 
   gdk_threads_enter ();
+
   menu = GTK_CONTAINER (gtk_option_menu_get_menu (GTK_OPTION_MENU (ptr)));
   children = gtk_container_children (menu);
-  gtk_container_remove (menu, GTK_WIDGET (g_list_nth (children, index)->data));
+  menuitem = GTK_WIDGET (g_list_nth (children, index)->data);
+  gtk_container_remove (menu, menuitem);
+  gtk_widget_destroy (menuitem);
+
   gdk_threads_leave ();
 }
 
@@ -179,38 +185,49 @@ Java_gnu_java_awt_peer_gtk_GtkChoicePeer_select
   gdk_threads_leave ();
 }
 
-
 static void
 item_activate (GtkItem *item __attribute__((unused)),
 	       struct item_event_hook_info *ie)
 {
   gdk_threads_leave ();
+
+  jstring label = (*gdk_env)->NewStringUTF (gdk_env, ie->label);
   (*gdk_env)->CallVoidMethod (gdk_env, ie->peer_obj,
-			      postItemEventID,
-			      ie->item_obj,
+			      choicePostItemEventID,
+			      label,
 			      (jint) AWT_ITEM_SELECTED);
   gdk_threads_enter ();
 }
 
 static void
-connect_choice_item_selectable_hook (JNIEnv *env, jobject peer_obj, 
-				     GtkItem *item, jobject item_obj)
+item_removed (gpointer data, 
+	      GClosure gc __attribute__((unused)))
+{
+  struct item_event_hook_info *ie = data;
+
+  free (ie->label);
+  free (ie);
+}
+
+static void
+connect_choice_item_selectable_hook (JNIEnv *env, 
+				     jobject peer_obj, 
+				     GtkItem *menuitem, 
+				     const char *label)
 {
   struct item_event_hook_info *ie;
   jobject *peer_objGlobPtr;
-  jobject *item_objGlobPtr;
 
   ie = (struct item_event_hook_info *) 
     malloc (sizeof (struct item_event_hook_info));
 
   peer_objGlobPtr = NSA_GET_GLOBAL_REF (env, peer_obj);
   g_assert (peer_objGlobPtr);
-  item_objGlobPtr = NSA_GET_GLOBAL_REF (env, item_obj);
-  g_assert (item_objGlobPtr);
 
   ie->peer_obj = *peer_objGlobPtr;
-  ie->item_obj = *item_objGlobPtr;
+  ie->label = strdup (label);
 
-  g_signal_connect (G_OBJECT (item), "activate", 
-		      GTK_SIGNAL_FUNC (item_activate), ie);
+  g_signal_connect_data (G_OBJECT (menuitem), "activate", 
+		      GTK_SIGNAL_FUNC (item_activate), ie,
+		      (GClosureNotify) item_removed, 0);
 }

libjava/jni/gtk-peer/gnu_java_awt_peer_gtk_GtkMainThread.c

@@ -56,6 +56,7 @@ jmethodID postKeyEventID;
 jmethodID postFocusEventID;
 jmethodID postAdjustmentEventID;
 jmethodID postItemEventID;
+jmethodID choicePostItemEventID;
 jmethodID postListItemEventID;
 jmethodID postTextEventID;
 jmethodID postWindowEventID;
@@ -80,7 +81,7 @@ Java_gnu_java_awt_peer_gtk_GtkMainThread_gtkInit (JNIEnv *env, jclass clazz)
   char **argv;
   char *homedir, *rcpath = NULL;
 /*    jclass gtkgenericpeer; */
-  jclass gtkcomponentpeer, gtkwindowpeer, gtkscrollbarpeer, gtklistpeer,
+  jclass gtkcomponentpeer, gtkchoicepeer, gtkwindowpeer, gtkscrollbarpeer, gtklistpeer,
     gtkmenuitempeer, gtktextcomponentpeer, window;
 
   NSA_INIT (env, clazz);
@@ -139,6 +140,8 @@ Java_gnu_java_awt_peer_gtk_GtkMainThread_gtkInit (JNIEnv *env, jclass clazz)
 
   gtkcomponentpeer = (*env)->FindClass (env,
 				     "gnu/java/awt/peer/gtk/GtkComponentPeer");
+  gtkchoicepeer = (*env)->FindClass (env,
+				     "gnu/java/awt/peer/gtk/GtkChoicePeer");
   gtkwindowpeer = (*env)->FindClass (env,
 				     "gnu/java/awt/peer/gtk/GtkWindowPeer");
   gtkscrollbarpeer = (*env)->FindClass (env, 
@@ -181,6 +184,9 @@ Java_gnu_java_awt_peer_gtk_GtkMainThread_gtkInit (JNIEnv *env, jclass clazz)
   postItemEventID = (*env)->GetMethodID (env, gtkcomponentpeer,
 					 "postItemEvent", 
 					 "(Ljava/lang/Object;I)V");
+  choicePostItemEventID = (*env)->GetMethodID (env, gtkchoicepeer,
+					 "choicePostItemEvent", 
+					 "(Ljava/lang/String;I)V");
   postListItemEventID = (*env)->GetMethodID (env, gtklistpeer,
 					     "postItemEvent",
 					     "(II)V");

libjava/jni/gtk-peer/gtkpeer.h

@@ -395,6 +395,7 @@ extern jmethodID postExposeEventID;
 extern jmethodID postKeyEventID;
 extern jmethodID postFocusEventID;
 extern jmethodID postAdjustmentEventID;
+extern jmethodID choicePostItemEventID;
 extern jmethodID postItemEventID;
 extern jmethodID postListItemEventID;
 extern jmethodID postTextEventID;
@@ -424,7 +425,7 @@ jint keyevent_state_to_awt_mods (GdkEvent *event);
 struct item_event_hook_info
 {
   jobject peer_obj;
-  jobject item_obj;
+  const char *label;
 };
 
 #endif /* __GTKPEER_H */