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fn3: GlobalKey registration progress

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Remove the "update" notification logic.
Hook the register/unregister functions. We're still not notifying.
This commit is contained in:
Hixie 2015-09-24 16:03:51 -07:00
parent c3b3b71bed
commit a3a238238a
1 changed files with 5 additions and 37 deletions
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42
packages/flutter/lib/src/fn3/framework.dart
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@ -44,7 +44,6 @@ class ObjectKey extends Key {
int get hashCode => identityHashCode(value);
}
typedef void GlobalKeyUpdateListener(GlobalKey key, Element element);
typedef void GlobalKeyRemoveListener(GlobalKey key);
/// A GlobalKey is one that must be unique across the entire application. It is
@ -59,12 +58,9 @@ abstract class GlobalKey extends Key {
static final Map<GlobalKey, Element> _registry = new Map<GlobalKey, Element>();
static final Map<GlobalKey, int> _debugDuplicates = new Map<GlobalKey, int>();
static final Map<GlobalKey, Set<GlobalKeyUpdateListener>> _updateListeners = new Map<GlobalKey, Set<GlobalKeyUpdateListener>>();
static final Map<GlobalKey, Set<GlobalKeyRemoveListener>> _removeListeners = new Map<GlobalKey, Set<GlobalKeyRemoveListener>>();
static final Set<GlobalKey> _updatedKeys = new Set<GlobalKey>();
static final Set<GlobalKey> _removedKeys = new Set<GlobalKey>();
// TODO(ianh): call this
void _register(Element element) {
assert(() {
if (_registry.containsKey(this)) {
@ -77,7 +73,6 @@ abstract class GlobalKey extends Key {
_registry[this] = element;
}
// TODO(ianh): call this
void _unregister(Element element) {
assert(() {
if (_registry.containsKey(this) && _debugDuplicates.containsKey(this)) {
@ -97,28 +92,6 @@ abstract class GlobalKey extends Key {
}
}
// TODO(ianh): call this
void _didUpdate() {
_updatedKeys.add(this);
}
static void registerUpdateListener(GlobalKey key, GlobalKeyUpdateListener listener) {
assert(key != null);
Set<GlobalKeyUpdateListener> listeners =
_updateListeners.putIfAbsent(key, () => new Set<GlobalKeyUpdateListener>());
bool added = listeners.add(listener);
assert(added);
}
static void unregisterUpdateListener(GlobalKey key, GlobalKeyUpdateListener listener) {
assert(key != null);
assert(_updateListeners.containsKey(key));
bool removed = _updateListeners[key].remove(listener);
if (_updateListeners[key].isEmpty)
_updateListeners.remove(key);
assert(removed);
}
static void registerRemoveListener(GlobalKey key, GlobalKeyRemoveListener listener) {
assert(key != null);
Set<GlobalKeyRemoveListener> listeners =
@ -153,17 +126,9 @@ abstract class GlobalKey extends Key {
throw message;
return true;
});
if (_updatedKeys.isEmpty && _removedKeys.isEmpty)
if (_removedKeys.isEmpty)
return;
try {
for (GlobalKey key in _updatedKeys) {
Element element = _registry[key];
if (element != null && _updateListeners.containsKey(key)) {
Set<GlobalKeyUpdateListener> localListeners = new Set<GlobalKeyUpdateListener>.from(_updateListeners[key]);
for (GlobalKeyUpdateListener listener in localListeners)
listener(key, element);
}
}
for (GlobalKey key in _removedKeys) {
if (!_registry.containsKey(key) && _removeListeners.containsKey(key)) {
Set<GlobalKeyRemoveListener> localListeners = new Set<GlobalKeyRemoveListener>.from(_removeListeners[key]);
@ -173,7 +138,6 @@ abstract class GlobalKey extends Key {
}
} finally {
_removedKeys.clear();
_updatedKeys.clear();
}
}
@ -545,6 +509,8 @@ abstract class Element<T extends Widget> implements BuildContext {
_parent = parent;
_slot = newSlot;
_depth = _parent != null ? _parent.depth + 1 : 1;
if (widget.key is GlobalKey)
widget.key._register(this);
assert(() { _debugLifecycleState = _ElementLifecycle.mounted; return true; });
}
@ -610,6 +576,8 @@ abstract class Element<T extends Widget> implements BuildContext {
assert(_debugLifecycleState == _ElementLifecycle.mounted);
assert(widget != null);
assert(depth != null);
if (widget.key is GlobalKey)
widget.key._unregister(this);
assert(() { _debugLifecycleState = _ElementLifecycle.defunct; return true; });
}