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;
}
long /*int*/ windowProc(long /*int*/ handle, long /*int*/ user_data) {
switch ((int) /*64*/ user_data) {
case ACTIVATE_INVERSE:
{
expanded = OS.gtk_expander_get_expanded(handle);
parent.layoutItems(0, false);
return 0;
}
}
return super.windowProc(handle, user_data);
}
void resizeControl(int yScroll) {
if (control != null && !control.isDisposed()) {
boolean visible = OS.gtk_expander_get_expanded(handle);
if (visible) {
int x = OS.GTK_WIDGET_X(clientHandle);
int y = OS.GTK_WIDGET_Y(clientHandle);
if (x != -1 && y != -1) {
int width = OS.GTK_WIDGET_WIDTH(clientHandle);
int height = OS.GTK_WIDGET_HEIGHT(clientHandle);
int[] property = new int[1];
OS.gtk_widget_style_get(handle, OS.focus_line_width, property, 0);
y += property[0] * 2;
height -= property[0] * 2;
/*
* Feature in GTK. When the ExpandBar is resize too small the control
* shows up on top of the vertical scrollbar. This happen because the
* GtkExpander does not set the size of child smaller than the request
* size of its parent and because the control is not parented in the
* hierarchy of the GtkScrolledWindow.
* The fix is calculate the width ourselves when the scrollbar is visible.
*/
ScrollBar vBar = parent.verticalBar;
if (vBar != null) {
if (OS.GTK_WIDGET_VISIBLE(vBar.handle)) {
width =
OS.GTK_WIDGET_WIDTH(parent.scrolledHandle)
- parent.vScrollBarWidth()
- 2 * parent.spacing;
}
}
control.setBounds(x, y - yScroll, width, Math.max(0, height), true, true);
}
}
control.setVisible(visible);
}
}