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1 | svoid addWeakChangeListener(IHasChangeListeners src, ChangeTriggerable target) {
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2 | addWeakChangeListener(src, target, o -> o.change()); |
3 | } |
4 | |
5 | svoid <A> addWeakChangeListener(IHasChangeListeners src, A target, IVF1<A> action) {
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6 | if (src == null || action == null || target == null) ret; |
7 | |
8 | var ref = weakRef(target); |
9 | src.onChange(r {
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10 | var target = ref!; |
11 | if (target == null) |
12 | src.removeChangeListener(this); |
13 | else |
14 | action.get(target); |
15 | }); |
16 | } |
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| Snippet ID: | #1034149 |
| Snippet name: | addWeakChangeListener - listener with weak reference to target that auto-removes itself when the target has been garbage collected |
| Eternal ID of this version: | #1034149/4 |
| Text MD5: | ee190d0f660fa4a1897b7b0f5a3d043d |
| Transpilation MD5: | b369311b638d3f84cebf79f2099bd919 |
| Author: | stefan |
| Category: | javax |
| Type: | JavaX fragment (include) |
| Public (visible to everyone): | Yes |
| Archived (hidden from active list): | No |
| Created/modified: | 2022-02-08 05:43:51 |
| Source code size: | 477 bytes / 16 lines |
| Pitched / IR pitched: | No / No |
| Views / Downloads: | 170 / 275 |
| Version history: | 3 change(s) |
| Referenced in: | [show references] |