void removeControl(Control control) {
super.removeControl(control);
int count = getItemCount();
for (int i = 0; i < count; i++) {
TabItem item = items[i];
if (item.control == control) item.setControl(null);
}
}
void releaseChildren(boolean destroy) {
if (items != null) {
for (int i = 0; i < items.length; i++) {
TabItem item = items[i];
if (item != null && !item.isDisposed()) {
item.release(false);
}
}
items = null;
}
super.releaseChildren(destroy);
}
void reskinChildren(int flags) {
if (items != null) {
long /*int*/ list = OS.gtk_container_get_children(handle);
if (list != 0) {
int count = OS.g_list_length(list);
OS.g_list_free(list);
for (int i = 0; i < count; i++) {
TabItem item = items[i];
if (item != null) item.reskin(flags);
}
}
}
super.reskinChildren(flags);
}
/**
* Returns the tab item at the given point in the receiver or null if no such item exists. The
* point is in the coordinate system of the receiver.
*
* @param point the point used to locate the item
* @return the tab item at the given point, or null if the point is not in a tab item
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_NULL_ARGUMENT - if the point is null
* </ul>
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*
* @since 3.4
*/
public TabItem getItem(Point point) {
checkWidget();
if (point == null) error(SWT.ERROR_NULL_ARGUMENT);
long /*int*/ list = OS.gtk_container_get_children(handle);
if (list == 0) return null;
int itemCount = OS.g_list_length(list);
OS.g_list_free(list);
for (int i = 0; i < itemCount; i++) {
TabItem item = items[i];
Rectangle rect = item.getBounds();
if (rect.contains(point)) return item;
}
return null;
}
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;
}
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
}
}