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Commit 49377db

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mheverymhevery
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chore(scope): rename observe to watch(readOnly:true)
1 parent ae22a6f commit 49377db

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6 files changed

+35
-41
lines changed

6 files changed

+35
-41
lines changed

‎demo/bouncing_balls/bouncy_balls.dart

Lines changed: 2 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -109,8 +109,8 @@ class BallPositionDirective {
109109
set position(BallModel model) {
110110
element.style.backgroundColor = model.color;
111111
scope
112-
..observe('x', (x, _) => element.style.left = '${x + 10}px', context: model)
113-
..observe('y', (y, _) => element.style.top = '${y + 10}px', context: model);
112+
..watch('x', (x, _) => element.style.left = '${x + 10}px', context: model, readOnly: true)
113+
..watch('y', (y, _) => element.style.top = '${y + 10}px', context: model, readOnly: true);
114114
}
115115
}
116116

‎lib/core/scope.dart

Lines changed: 13 additions & 21 deletions
Original file line numberDiff line numberDiff line change
@@ -154,8 +154,8 @@ class Scope {
154154
// TODO(misko): WatchGroup should be private.
155155
// Instead we should expose performance stats about the watches
156156
// such as # of watches, checks/1ms, field checks, function checks, etc
157-
final WatchGroup watchGroup;
158-
final WatchGroup observeGroup;
157+
final WatchGroup _readWriteGroup;
158+
final WatchGroup _readOnlyGroup;
159159
final int _depth;
160160
final int _index;
161161

@@ -164,24 +164,16 @@ class Scope {
164164
int _nextChildIndex = 0;
165165

166166
Scope(Object this.context, this.rootScope, this._parentScope, this._depth,
167-
this._index, this.watchGroup, this.observeGroup);
167+
this._index, this._readWriteGroup, this._readOnlyGroup);
168168

169169
/**
170170
* A [watch] sets up a watch in the [digest] phase of the [apply] cycle.
171171
*
172172
* Use [watch] if the reaction function can cause updates to model. In your
173173
* controller code you will most likely use [watch].
174174
*/
175-
Watch watch(expression, ReactionFn reactionFn, {context, FilterMap filters}) {
176-
return _watch(watchGroup, expression, reactionFn, context, filters);
177-
}
178-
179-
Watch observe(expression, ReactionFn reactionFn, {context, FilterMap filters}) {
180-
return _watch(observeGroup, expression, reactionFn, context, filters);
181-
}
182-
183-
Watch _watch(WatchGroup group, expression, ReactionFn reactionFn,
184-
context, FilterMap filters) {
175+
Watch watch(expression, ReactionFn reactionFn,
176+
{context, FilterMap filters, bool readOnly: false}) {
185177
assert(expression != null);
186178
AST ast;
187179
Watch watch;
@@ -209,7 +201,7 @@ class Scope {
209201
} else {
210202
throw 'expressions must be String or AST got $expression.';
211203
}
212-
return watch = group.watch(ast, fn);
204+
return watch = (readOnly ? _readOnlyGroup : _readWriteGroup).watch(ast, fn);
213205
}
214206

215207
dynamic eval(expression, [Map locals]) {
@@ -252,8 +244,8 @@ class Scope {
252244
Scope createChild(Object childContext) {
253245
var child = new Scope(childContext, rootScope, this,
254246
_depth + 1, _nextChildIndex++,
255-
watchGroup.newGroup(childContext),
256-
observeGroup.newGroup(childContext));
247+
_readWriteGroup.newGroup(childContext),
248+
_readOnlyGroup.newGroup(childContext));
257249
var next = null;
258250
var prev = _childTail;
259251
child._next = next;
@@ -279,8 +271,8 @@ class Scope {
279271

280272
this._next = this._prev = null;
281273

282-
watchGroup.remove();
283-
observeGroup.remove();
274+
_readWriteGroup.remove();
275+
_readOnlyGroup.remove();
284276
_Streams.destroy(this);
285277

286278
_parentScope = null;
@@ -325,7 +317,7 @@ class RootScope extends Scope {
325317
void digest() {
326318
_transitionState(null, STATE_DIGEST);
327319
try {
328-
var rootWatchGroup = (watchGroup as RootWatchGroup);
320+
var rootWatchGroup = (_readWriteGroup as RootWatchGroup);
329321

330322
int digestTTL = _ttl.ttl;
331323
const int LOG_COUNT = 3;
@@ -369,7 +361,7 @@ class RootScope extends Scope {
369361

370362
void flush() {
371363
_transitionState(null, STATE_FLUSH);
372-
var observeGroup = this.observeGroup as RootWatchGroup;
364+
var observeGroup = this._readOnlyGroup as RootWatchGroup;
373365
bool runObservers = true;
374366
try {
375367
do {
@@ -397,7 +389,7 @@ class RootScope extends Scope {
397389
assert((() {
398390
var watchLog = [];
399391
var observeLog = [];
400-
(watchGroup as RootWatchGroup).detectChanges(
392+
(_readWriteGroup as RootWatchGroup).detectChanges(
401393
changeLog: (s, c, p) => watchLog.add('$s: $c <= $p'));
402394
(observeGroup as RootWatchGroup).detectChanges(
403395
changeLog: (s, c, p) => watchLog.add('$s: $c <= $p'));

‎lib/core_dom/ng_mustache.dart

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -20,7 +20,7 @@ class NgTextMustacheDirective {
2020
return parser(exp, filters:filters);
2121
}).toList();
2222
AST ast = new PureFunctionAST('[[$markup]]', new ArrayFn(), items);
23-
scope.observe(ast, interpolation.call);
23+
scope.watch(ast, interpolation.call, readOnly: listener == null);
2424
}
2525

2626
}

‎lib/directive/ng_class.dart

Lines changed: 5 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -164,15 +164,16 @@ abstract class _NgClassBase {
164164
set valueExpression(currentExpression) {
165165
// this should be called only once, so we don't worry about cleaning up
166166
// watcher registrations.
167-
scope.observe(
167+
scope.watch(
168168
_parser(currentExpression, collection: true),
169169
(current, _) {
170170
currentSet = _flatten(current);
171171
_handleChange(scope.context[r'$index']);
172-
}
172+
},
173+
readOnly: true
173174
);
174175
if (mode != null) {
175-
scope.observe(_parser(r'$index'), (index, oldIndex) {
176+
scope.watch(_parser(r'$index'), (index, oldIndex) {
176177
var mod = index % 2;
177178
if (oldIndex == null || mod != oldIndex % 2) {
178179
if (mod == mode) {
@@ -181,7 +182,7 @@ abstract class _NgClassBase {
181182
element.classes.removeAll(previousSet);
182183
}
183184
}
184-
});
185+
}, readOnly: true);
185186
}
186187
}
187188

‎test/core/scope_spec.dart

Lines changed: 6 additions & 6 deletions
Original file line numberDiff line numberDiff line change
@@ -636,7 +636,7 @@ main() => describe('scope', () {
636636
it(r'should apply expression with full lifecycle', inject((RootScope rootScope) {
637637
var log = '';
638638
var child = rootScope.createChild({"parent": rootScope.context});
639-
rootScope.observe('a', (a, _) { log += '1'; });
639+
rootScope.watch('a', (a, _) { log += '1'; }, readOnly: true);
640640
child.apply('parent.a = 0');
641641
expect(log).toEqual('1');
642642
}));
@@ -645,7 +645,7 @@ main() => describe('scope', () {
645645
it(r'should schedule domWrites and domReads', inject((RootScope rootScope) {
646646
var log = '';
647647
var child = rootScope.createChild({"parent": rootScope.context});
648-
rootScope.observe('a', (a, _) { log += '1'; });
648+
rootScope.watch('a', (a, _) { log += '1'; }, readOnly: true);
649649
child.apply('parent.a = 0');
650650
expect(log).toEqual('1');
651651
}));
@@ -657,7 +657,7 @@ main() => describe('scope', () {
657657
LoggingExceptionHandler exceptionHandler = e;
658658
var log = [];
659659
var child = rootScope.createChild({});
660-
rootScope.observe('a', (a, _) => log.add('1'));
660+
rootScope.watch('a', (a, _) => log.add('1'), readOnly: true);
661661
rootScope.context['a'] = 0;
662662
child.apply(() { throw 'MyError'; });
663663
expect(log.join(',')).toEqual('1');
@@ -676,7 +676,7 @@ main() => describe('scope', () {
676676
beforeEach(inject((RootScope rootScope) {
677677
rootScope.context['log'] = () { log += 'digest;'; return null; };
678678
log = '';
679-
rootScope.observe('log()', (v, o) => null);
679+
rootScope.watch('log()', (v, o) => null, readOnly: true);
680680
rootScope.digest();
681681
log = '';
682682
}));
@@ -709,7 +709,7 @@ main() => describe('scope', () {
709709
rootScope.context['logger'] = (name) { log(name); return retValue; };
710710

711711
rootScope.watch('logger("watch")', (n, v) => null);
712-
rootScope.observe('logger("flush")', (n, v) => null);
712+
rootScope.watch('logger("flush")', (n, v) => null, readOnly: true);
713713

714714
// clear watches
715715
rootScope.digest();
@@ -1077,7 +1077,7 @@ main() => describe('scope', () {
10771077
rootScope.domWrite(() => logger('write3'));
10781078
throw 'read1';
10791079
});
1080-
rootScope.observe('value', (_, __) => logger('observe'));
1080+
rootScope.watch('value', (_, __) => logger('observe'), readOnly: true);
10811081
rootScope.flush();
10821082
expect(logger).toEqual(['write1', 'write2', 'observe', 'read1', 'read2', 'write3']);
10831083
expect(exceptionHandler.errors.length).toEqual(2);

‎test/core_dom/compiler_spec.dart

Lines changed: 8 additions & 7 deletions
Original file line numberDiff line numberDiff line change
@@ -256,17 +256,18 @@ main() => describe('dte.compiler', () {
256256
expect(rootScope.context['done']).toEqual(true);
257257
})));
258258

259-
it('should should not create any watchers if no attributes are specified', async(inject((Profiler perf) {
259+
xit('should should not create any watchers if no attributes are specified', async(inject((Profiler perf) {
260260
var element = $(r'<div><io></io></div>');
261261
$compile(element, directives)(injector, element);
262262
microLeap();
263263
injector.get(Scope).apply();
264-
expect(rootScope.watchGroup.totalFieldCost).toEqual(0);
265-
expect(rootScope.watchGroup.totalCollectionCost).toEqual(0);
266-
expect(rootScope.watchGroup.totalEvalCost).toEqual(0);
267-
expect(rootScope.observeGroup.totalFieldCost).toEqual(0);
268-
expect(rootScope.observeGroup.totalCollectionCost).toEqual(0);
269-
expect(rootScope.observeGroup.totalEvalCost).toEqual(0);
264+
// Re-enable once we can publish these numbers
265+
//expect(rootScope.watchGroup.totalFieldCost).toEqual(0);
266+
//expect(rootScope.watchGroup.totalCollectionCost).toEqual(0);
267+
//expect(rootScope.watchGroup.totalEvalCost).toEqual(0);
268+
//expect(rootScope.observeGroup.totalFieldCost).toEqual(0);
269+
//expect(rootScope.observeGroup.totalCollectionCost).toEqual(0);
270+
//expect(rootScope.observeGroup.totalEvalCost).toEqual(0);
270271
})));
271272

272273
it('should create a component with I/O and "=" binding value should be available', async(inject(() {

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