Choice.java (add): Leave posting of ItemEvents to peer.

2004-01-05  Fernando Nasser  <fnasser@redhat.com>

        * java/awt/Choice.java (add): Leave posting of ItemEvents to peer.
        (insert): Ditto.
        (remove): Ditto.  Also, Check for valid argument.
        (removeAll): Use peer interface method.
        * gnu/java/awt/peer/gtk/GtkChoicePeer.java (nativeAdd): New name for
        native add function.
        (nativeRemove): New name for native remove function.
        (getHistory): New native function.
        (constructor): Generate ItemEvent.
        (add): Ditto, if selection is changed.
        (remove): Ditto, ditto.
        (removeAll): Add implementation.
        (handleEvent): Remove.  Dead code.
        (choicePostItemEvent): Add comment.
        * jni/gtk-peer/gnu_java_awt_peer_gtk_GtkChoicePeer.c
        (Java_gnu_java_awt_peer_gtk_GtkChoicePeer_append): Add comments.
        (Java_gnu_java_awt_peer_gtk_GtkChoicePeer_add): Rename to...
        (Java_gnu_java_awt_peer_gtk_GtkChoicePeer_nativeAdd): New name.  Add
        comments and fix condition to change selection.
        (Java_gnu_java_awt_peer_gtk_GtkChoicePeer_remove): Rename to...
        (Java_gnu_java_awt_peer_gtk_GtkChoicePeer_nativeRemove): New name.  Add
        remove all capability.
        (Java_gnu_java_awt_peer_gtk_GtkChoicePeer_getHistory): New function.
        (item_activate): Add cast to remove compiler warning.

From-SVN: r75443

libjava/ChangeLog

+2004-01-05  Fernando Nasser  <fnasser@redhat.com>
+
+	* java/awt/Choice.java (add): Leave posting of ItemEvents to peer.
+	(insert): Ditto.
+	(remove): Ditto.  Also, Check for valid argument.
+	(removeAll): Use peer interface method.
+	* gnu/java/awt/peer/gtk/GtkChoicePeer.java (nativeAdd): New name for
+	native add function.
+	(nativeRemove): New name for native remove function.
+	(getHistory): New native function.
+	(constructor): Generate ItemEvent.
+	(add): Ditto, if selection is changed.
+	(remove): Ditto, ditto.
+	(removeAll): Add implementation.
+	(handleEvent): Remove.  Dead code.
+	(choicePostItemEvent): Add comment.
+	* jni/gtk-peer/gnu_java_awt_peer_gtk_GtkChoicePeer.c
+	(Java_gnu_java_awt_peer_gtk_GtkChoicePeer_append): Add comments.
+	(Java_gnu_java_awt_peer_gtk_GtkChoicePeer_add): Rename to...
+	(Java_gnu_java_awt_peer_gtk_GtkChoicePeer_nativeAdd): New name.  Add
+	comments and fix condition to change selection.
+	(Java_gnu_java_awt_peer_gtk_GtkChoicePeer_remove): Rename to...
+	(Java_gnu_java_awt_peer_gtk_GtkChoicePeer_nativeRemove): New name.  Add
+	remove all capability.
+	(Java_gnu_java_awt_peer_gtk_GtkChoicePeer_getHistory): New function.
+	(item_activate): Add cast to remove compiler warning.
+
 2004-01-05  Thomas Fitzsimmons  <fitzsim@redhat.com>
 
 	* gnu/java/awt/peer/gtk/GtkComponentPeer.java,

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

@@ -38,6 +38,7 @@ exception statement from your version. */
 
 package gnu.java.awt.peer.gtk;
 
+import java.awt.AWTEvent;
 import java.awt.Choice;
 import java.awt.event.ItemEvent;
 import java.awt.peer.ChoicePeer;
@@ -45,8 +46,6 @@ import java.awt.peer.ChoicePeer;
 public class GtkChoicePeer extends GtkComponentPeer
   implements ChoicePeer
 {
-  native void create ();
-
   public GtkChoicePeer (Choice c)
   {
     super (c);
@@ -59,35 +58,71 @@ public class GtkChoicePeer extends GtkComponentPeer
 	  items[i] = c.getItem (i);
 	  
 	append (items);
+
+        // Must set our state before notifying listeners
+	((Choice) awtComponent).select (c.getItem (0));
+	postItemEvent (c.getItem (0), ItemEvent.SELECTED);
       }
   }
 
+  native void create ();
+
   native void append (String items[]);
+  native int getHistory ();
+  native void nativeAdd (String item, int index);
+  native void nativeRemove (int index);
 
-  native public void add (String item, int index);
-  native public void remove (int index);
   native public void select (int position);
  
-  public void removeAll () { }
-  
-  public void addItem (String item, int position)
+  public void add (String item, int index)
   {
-    add (item, position);
+    int before = getHistory();
+    
+    nativeAdd (item, index);
+    
+    /* Generate an ItemEvent if we added the first one or
+       if we inserted at or before the currently selected item. */
+    if ((before < 0) || (before >= index))
+      {
+        // Must set our state before notifying listeners
+	((Choice) awtComponent).select (((Choice) awtComponent).getItem (0));
+        postItemEvent (((Choice) awtComponent).getItem (0), ItemEvent.SELECTED);
+      }
+  }
+
+  public void remove (int index)
+  {
+    int before = getHistory();
+    int after;
+    
+    nativeRemove (index);
+    after = getHistory();
+    
+    /* Generate an ItemEvent if we are removing the currently selected item
+       and there are at least one item left. */
+    if ((before == index) && (after >= 0))
+      {
+        // Must set our state before notifying listeners
+	((Choice) awtComponent).select (((Choice) awtComponent).getItem (0));
+        postItemEvent (((Choice) awtComponent).getItem (0), ItemEvent.SELECTED);
+      }
+  }
+
+  public void removeAll ()
+  {
+    nativeRemove (-1);
   }
   
-  /*
-  public void handleEvent (AWTEvent event)
+  public void addItem (String item, int position)
   {
-    if (event instanceof ItemEvent)
-      ((Choice) awtComponent).select ((String) ((ItemEvent)event).getItem ());
-    super.handleEvent (event);
+    add (item, position);
   }
-  */
 
   protected void choicePostItemEvent (String label, int stateChange)
   {
+    // Must set our state before notifying listeners
     if (stateChange == ItemEvent.SELECTED)
       ((Choice) awtComponent).select (label);
-    super.postItemEvent (label, stateChange);
+    postItemEvent (label, stateChange);
   }
 }

libjava/java/awt/Choice.java

@@ -169,17 +169,6 @@ add(String item)
       ChoicePeer cp = (ChoicePeer) peer;
       cp.add (item, i);
     }
-
-  if (i == 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));
-  }
 }
 
 /*************************************************************************/
@@ -229,17 +218,6 @@ insert(String item, int index)
       ChoicePeer cp = (ChoicePeer) peer;
       cp.add (item, 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));
-  }
 }
 
 /*************************************************************************/
@@ -273,6 +251,9 @@ remove(String item)
 public synchronized void
 remove(int index)
 {
+  if ((index < 0) || (index > getItemCount()))
+    throw new IllegalArgumentException("Bad index: " + index);
+
   pItems.removeElementAt(index);
 
   if (peer != null)
@@ -281,17 +262,7 @@ remove(int index)
       cp.remove (index);
     }
 
-  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)
+  if (selectedIndex > index)
     --selectedIndex;
 }
 
@@ -303,26 +274,15 @@ remove(int index)
 public synchronized void
 removeAll()
 {
-  int count = getItemCount();
-
-  if (count <= 0)
+  if (getItemCount() <= 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
-    }
+  pItems.removeAllElements ();
 
-  for (int i = (count - 1); i >= 0; i--)
+  if (peer != null)
     {
-      // Always remove the last to avoid generation of ItemEvents.
-      pItems.removeElementAt(i);
-      if (cp != null)
-        cp.remove (i);
+      ChoicePeer cp = (ChoicePeer) peer;
+      cp.removeAll ();
     }
 
   selectedIndex = -1;

libjava/jni/gtk-peer/gnu_java_awt_peer_gtk_GtkChoicePeer.c

@@ -85,9 +85,11 @@ Java_gnu_java_awt_peer_gtk_GtkChoicePeer_append
   ptr = NSA_GET_PTR (env, obj);
 
   gdk_threads_enter ();
+
   menu = GTK_MENU (gtk_option_menu_get_menu (GTK_OPTION_MENU (ptr)));
 
-  if (!gtk_container_children (GTK_CONTAINER (menu)))
+  /* Are we adding the first element? */
+  if (gtk_option_menu_get_history (GTK_OPTION_MENU (ptr)) < 0)
       need_set_history = 1;
 
   count = (*env)->GetArrayLength (env, items);
@@ -110,7 +112,8 @@ Java_gnu_java_awt_peer_gtk_GtkChoicePeer_append
 
       (*env)->ReleaseStringUTFChars (env, item, label);
     }
-  
+
+  /* If we just added the first element select it. */  
   if (need_set_history)
     gtk_option_menu_set_history (GTK_OPTION_MENU (ptr), 0);
 
@@ -118,12 +121,13 @@ Java_gnu_java_awt_peer_gtk_GtkChoicePeer_append
 }
 
 JNIEXPORT void JNICALL 
-Java_gnu_java_awt_peer_gtk_GtkChoicePeer_add 
+Java_gnu_java_awt_peer_gtk_GtkChoicePeer_nativeAdd 
   (JNIEnv *env, jobject obj, jstring item, jint index)
 {
   void *ptr;
   const char *label;
   GtkWidget *menu, *menuitem;
+  int current;
   int need_set_history = 0;
 
   ptr = NSA_GET_PTR (env, obj);
@@ -131,17 +135,24 @@ Java_gnu_java_awt_peer_gtk_GtkChoicePeer_add
   label = (*env)->GetStringUTFChars (env, item, 0);      
 
   gdk_threads_enter ();
-  menu = gtk_option_menu_get_menu (GTK_OPTION_MENU (ptr));
+  
+  current = gtk_option_menu_get_history (GTK_OPTION_MENU (ptr));
 
-  if (!gtk_container_children (GTK_CONTAINER (menu)))
+  /* Are we adding the first element or below or at the currently
+     selected one? */
+  if ((current < 0) || (current >= index))
       need_set_history = 1;
 
+  menu = gtk_option_menu_get_menu (GTK_OPTION_MENU (ptr));
   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), label);
 
+  /* If we just added the first element select it.
+     If we added at of below the currently selected position make
+     the first item the selected one. */  
   if (need_set_history)
     gtk_option_menu_set_history (GTK_OPTION_MENU (ptr), 0);
 
@@ -151,13 +162,15 @@ Java_gnu_java_awt_peer_gtk_GtkChoicePeer_add
 }
 
 JNIEXPORT void JNICALL 
-Java_gnu_java_awt_peer_gtk_GtkChoicePeer_remove 
+Java_gnu_java_awt_peer_gtk_GtkChoicePeer_nativeRemove 
   (JNIEnv *env, jobject obj, jint index)
 {
   void *ptr;
   GtkContainer *menu;
   GtkWidget *menuitem;
   GList *children;
+  int need_set_history = 0;
+  int i, from, to;
 
   ptr = NSA_GET_PTR (env, obj);
 
@@ -165,9 +178,38 @@ Java_gnu_java_awt_peer_gtk_GtkChoicePeer_remove
 
   menu = GTK_CONTAINER (gtk_option_menu_get_menu (GTK_OPTION_MENU (ptr)));
   children = gtk_container_children (menu);
-  menuitem = GTK_WIDGET (g_list_nth (children, index)->data);
-  gtk_container_remove (menu, menuitem);
-  gtk_widget_destroy (menuitem);
+
+  if (index == -1)
+    {
+      /* Remove all elements (removeAll) */
+      from = g_list_length (children) - 1;
+      to = 0;
+
+      /* Select the first item to prevent spurious activate signals */
+      gtk_option_menu_set_history (GTK_OPTION_MENU (ptr), 0);
+    }
+  else
+    {
+      /* Remove the specific index element */
+      from = index;
+      to = index;
+
+      /* Are we removing the currently selected element? */
+      if (gtk_option_menu_get_history (GTK_OPTION_MENU (ptr)) == index)
+        need_set_history = 1;
+    }
+
+  for (i = from; i >= to; i--)
+    {
+      menuitem = GTK_WIDGET (g_list_nth (children, i)->data);
+      gtk_container_remove (menu, menuitem);
+      gtk_widget_destroy (menuitem);
+    }
+
+  /* If we just removed the currently selected element and there are
+     still elements left in the list, make the first item the selected one. */  
+  if (need_set_history && gtk_container_children (menu))
+    gtk_option_menu_set_history (GTK_OPTION_MENU (ptr), 0);
 
   gdk_threads_leave ();
 }
@@ -185,6 +227,24 @@ Java_gnu_java_awt_peer_gtk_GtkChoicePeer_select
   gdk_threads_leave ();
 }
 
+JNIEXPORT jint JNICALL 
+Java_gnu_java_awt_peer_gtk_GtkChoicePeer_getHistory 
+  (JNIEnv *env, jobject obj)
+{
+  void *ptr;
+  int index;
+
+  ptr = NSA_GET_PTR (env, obj);
+
+  gdk_threads_enter ();
+
+  index = gtk_option_menu_get_history (GTK_OPTION_MENU (ptr));
+
+  gdk_threads_leave ();
+
+  return index;
+}
+
 static void
 item_activate (GtkItem *item __attribute__((unused)),
 	       struct item_event_hook_info *ie)
@@ -205,7 +265,7 @@ item_removed (gpointer data,
 {
   struct item_event_hook_info *ie = data;
 
-  free (ie->label);
+  free ((void *) ie->label);
   free (ie);
 }