void setSelection(int index, boolean notify) {
   if (index < 0) return;
   int oldIndex = OS.gtk_notebook_get_current_page(handle);
   if (oldIndex == index) return;
   if (oldIndex != -1) {
     TabItem item = items[oldIndex];
     Control control = item.control;
     if (control != null && !control.isDisposed()) {
       control.setVisible(false);
     }
   }
   OS.g_signal_handlers_block_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, SWITCH_PAGE);
   OS.gtk_notebook_set_current_page(handle, index);
   OS.g_signal_handlers_unblock_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, SWITCH_PAGE);
   int newIndex = OS.gtk_notebook_get_current_page(handle);
   if (newIndex != -1) {
     TabItem item = items[newIndex];
     Control control = item.control;
     if (control != null && !control.isDisposed()) {
       control.setBounds(getClientArea());
       control.setVisible(true);
     }
     if (notify) {
       Event event = new Event();
       event.item = item;
       sendSelectionEvent(SWT.Selection, event, true);
     }
   }
 }
 void destroyItem(TabItem item) {
   int index = 0;
   int itemCount = getItemCount();
   while (index < itemCount) {
     if (items[index] == item) break;
     index++;
   }
   if (index == itemCount) error(SWT.ERROR_ITEM_NOT_REMOVED);
   int oldIndex = OS.gtk_notebook_get_current_page(handle);
   OS.g_signal_handlers_block_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, SWITCH_PAGE);
   OS.gtk_notebook_remove_page(handle, index);
   OS.g_signal_handlers_unblock_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, SWITCH_PAGE);
   System.arraycopy(items, index + 1, items, index, --itemCount - index);
   items[itemCount] = null;
   if (index == oldIndex) {
     int newIndex = OS.gtk_notebook_get_current_page(handle);
     if (newIndex != -1) {
       Control control = items[newIndex].getControl();
       if (control != null && !control.isDisposed()) {
         control.setBounds(getClientArea());
         control.setVisible(true);
       }
       Event event = new Event();
       event.item = items[newIndex];
       sendSelectionEvent(SWT.Selection, event, true);
       // the widget could be destroyed at this point
     }
   }
 }
Esempio n. 3
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 long /*int*/ gtk_activate(long /*int*/ widget) {
   Event event = new Event();
   event.item = this;
   int type = OS.gtk_expander_get_expanded(handle) ? SWT.Collapse : SWT.Expand;
   parent.sendEvent(type, event);
   return 0;
 }
 void createItem(TabItem item, int index) {
   long /*int*/ list = OS.gtk_container_get_children(handle);
   int itemCount = 0;
   if (list != 0) {
     itemCount = OS.g_list_length(list);
     OS.g_list_free(list);
   }
   if (!(0 <= index && index <= itemCount)) error(SWT.ERROR_INVALID_RANGE);
   if (itemCount == items.length) {
     TabItem[] newItems = new TabItem[items.length + 4];
     System.arraycopy(items, 0, newItems, 0, items.length);
     items = newItems;
   }
   long /*int*/ boxHandle = gtk_box_new(OS.GTK_ORIENTATION_HORIZONTAL, false, 0);
   if (boxHandle == 0) error(SWT.ERROR_NO_HANDLES);
   long /*int*/ labelHandle = OS.gtk_label_new_with_mnemonic(null);
   if (labelHandle == 0) error(SWT.ERROR_NO_HANDLES);
   long /*int*/ imageHandle = OS.gtk_image_new();
   if (imageHandle == 0) error(SWT.ERROR_NO_HANDLES);
   OS.gtk_container_add(boxHandle, imageHandle);
   OS.gtk_container_add(boxHandle, labelHandle);
   long /*int*/ pageHandle = OS.g_object_new(display.gtk_fixed_get_type(), 0);
   if (pageHandle == 0) error(SWT.ERROR_NO_HANDLES);
   if (OS.GTK3) {
     OS.gtk_widget_override_background_color(pageHandle, OS.GTK_STATE_FLAG_NORMAL, new GdkRGBA());
     long /*int*/ region = OS.gdk_region_new();
     OS.gtk_widget_input_shape_combine_region(pageHandle, region);
     OS.gdk_region_destroy(region);
   }
   OS.g_signal_handlers_block_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, SWITCH_PAGE);
   OS.gtk_notebook_insert_page(handle, pageHandle, boxHandle, index);
   OS.g_signal_handlers_unblock_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, SWITCH_PAGE);
   OS.gtk_widget_show(boxHandle);
   OS.gtk_widget_show(labelHandle);
   OS.gtk_widget_show(pageHandle);
   item.state |= HANDLE;
   item.handle = boxHandle;
   item.labelHandle = labelHandle;
   item.imageHandle = imageHandle;
   item.pageHandle = pageHandle;
   System.arraycopy(items, index, items, index + 1, itemCount++ - index);
   items[index] = item;
   if ((state & FOREGROUND) != 0) {
     item.setForegroundColor(getForegroundColor());
   }
   if ((state & FONT) != 0) {
     item.setFontDescription(getFontDescription());
   }
   if (itemCount == 1) {
     OS.g_signal_handlers_block_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, SWITCH_PAGE);
     OS.gtk_notebook_set_current_page(handle, 0);
     OS.g_signal_handlers_unblock_matched(handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, 0, 0, SWITCH_PAGE);
     Event event = new Event();
     event.item = items[0];
     sendSelectionEvent(SWT.Selection, event, false);
     // the widget could be destroyed at this point
   }
 }
 long /*int*/ gtk_switch_page(long /*int*/ widget, long /*int*/ page, long /*int*/ page_num) {
   int index = OS.gtk_notebook_get_current_page(handle);
   if (index != -1) {
     Control control = items[index].getControl();
     if (control != null && !control.isDisposed()) {
       control.setVisible(false);
     }
   }
   TabItem item = items[(int) /*64*/ page_num];
   Control control = item.getControl();
   if (control != null && !control.isDisposed()) {
     control.setBounds(getClientArea());
     control.setVisible(true);
   }
   Event event = new Event();
   event.item = item;
   sendSelectionEvent(SWT.Selection, event, false);
   return 0;
 }