45 lines
1.3 KiB
Rust
45 lines
1.3 KiB
Rust
|
use crate::avm1::Value;
|
||
|
|
use crate::context::UpdateContext;
|
||
|
|
pub use crate::display_object::{DisplayObject, TDisplayObject};
|
||
|
|
use gc_arena::{Collect, GcCell, MutationContext};
|
||
|
|
|
||
|
|
#[collect(no_drop)]
|
||
|
|
#[derive(Clone, Copy, Collect, Debug)]
|
||
|
|
pub struct FocusTracker<'gc>(GcCell<'gc, Option<DisplayObject<'gc>>>);
|
||
|
|
|
||
|
|
impl<'gc> FocusTracker<'gc> {
|
||
|
|
pub fn new(gc_context: MutationContext<'gc, '_>) -> Self {
|
||
|
|
Self(GcCell::allocate(gc_context, None))
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn get(&self) -> Option<DisplayObject<'gc>> {
|
||
|
|
*self.0.read()
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn set(
|
||
|
|
&self,
|
||
|
|
focused_element: Option<DisplayObject<'gc>>,
|
||
|
|
context: &mut UpdateContext<'_, 'gc, '_>,
|
||
|
|
) {
|
||
|
|
let old = std::mem::replace(&mut *self.0.write(context.gc_context), focused_element);
|
||
|
|
|
||
|
|
if old.is_none() && focused_element.is_none() {
|
||
|
|
// We didn't have anything, we still don't, no change.
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
if old.is_some() == focused_element.is_some()
|
||
|
|
&& old.unwrap().as_ptr() == focused_element.unwrap().as_ptr()
|
||
|
|
{
|
||
|
|
// We're setting it to the same object as before, no change.
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if let Some(old) = old {
|
||
|
|
old.on_focus_changed(false);
|
||
|
|
}
|
||
|
|
if let Some(new) = focused_element {
|
||
|
|
new.on_focus_changed(true);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|