This reverts commit 15e1a29cd0.
The original commit was fixing two issues - one of them was
preventing attributes that triggered directives that replaced
the compiled node to be merged into the new node.
This change was a breaking change (as seen in the diff of the
tests in this commit) and that's why it's being removed.
A proper fix will follow.
parseKeyValue and toKeyValue can now handle duplicate values in the query.
```
?x=1&x=2 <-> {x:[1,2]}
```
The algorithm looks like:
1)parseKeyValue looks for presence of obj[key]
2)detects and replaces obj[key] with [obj[key],val]
3)then pushes more duplicates if necessary
4)toKeyValue decodes array correctly
5)(not changed)$location.search({param: 'key'}) still replaces if necessary
6)(not changed)$location.search({param: ['key1', 'key2']}) sets the url with duplicates
BREAKING CHANGE: Before this change:
- `parseKeyValue` only took the last key overwriting all the previous keys;
- `toKeyValue` joined the keys together in a comma delimited string.
This was deemed buggy behavior. If your server relied on this behavior
then either the server should be fixed or a simple serialization of
the array should be done on the client before passing it to $location.
With the recent refactoring of $location service we changed this behavior
resulting in a regression.
Previously we thought that html5 mode always required base[href]
to be set in order for urls to resolve properly. It turns out that
base[href] is problematic because it makes anchor urls (#foo) to
always resolve to the base url, which is almost always incorrect
and results in all anchors links and other anchor urls (e.g. svg
references) to be broken.
For this reason, we should now start recommending that people just
deploy to root context (/) and not set the base[href] when using
the html5 mode (push/pop history state).
If it's impossible to deploy to the root context then either all
urls in the app must be absolute or base[href] must be set with the
caveat that anchor urls in such app won't work.
Closes#2762
BREAKING CHANGE: Concatenating expressions makes it hard to reason about
whether some combination of concatenated values are unsafe to use
and could easily lead to XSS. By requiring that a single expression
be used for *[src/ng-src] such as iframe[src], object[src], etc.
(but not img[src/ng-src] since that value is sanitized), we ensure that the value
that's used is assigned or constructed by some JS code somewhere
that is more testable or make it obvious that you bound the value to
some user controlled value. This helps reduce the load when
auditing for XSS issues.
To migrate your code, follow the example below:
Before:
JS:
scope.baseUrl = 'page';
scope.a = 1;
scope.b = 2;
HTML:
<!-- Are a and b properly escaped here? Is baseUrl
controlled by user? -->
<iframe src="{{baseUrl}}?a={{a}&b={{b}}">
After:
JS:
var baseUrl = "page";
scope.getIframeSrc = function() {
// There are obviously better ways to do this. The
// key point is that one will think about this and do
// it the right way.
var qs = ["a", "b"].map(function(value, name) {
return encodeURIComponent(name) + "=" +
encodeURIComponent(value);
}).join("&");
// baseUrl isn't on scope so it isn't bound to a user
// controlled value.
return baseUrl + "?" + qs;
}
HTML: <iframe src="{{getIframeSrc()}}">
BREAKING CHANGE: Interpolations inside DOM event handlers are
disallowed. DOM event handlers execute arbitrary Javascript code.
Using an interpolation for such handlers means that the interpolated
value is a JS string that is evaluated. Storing or generating such
strings is error prone and likely leads to an XSS if you're not
super careful. On the other hand, ng-click and such event handlers
evaluate Angular expressions that are a lot safer (e.g. No direct
access to global objects - only scope), cleaner and harder to
exploit.
To migrate the code follow the example below:
Before:
JS: scope.foo = 'alert(1)';
HTML: <div onclick="{{foo}}">
After:
JS: scope.foo = function() { alert(1); }
HTML: <div ng-click="foo()">
Ref: 9532234bf1
BREAKING CHANGE: img[src] URLs are now sanitized using the same whitelist
as a[href] URLs. The most obvious impact is if you were using data:
URIs. data: URIs will be whitelisted for img[src] in a future
commit.
jQuery switched to a completely new event binding implementation as of
1.7.0, centering around on/off methods instead of previous bind/unbind.
This patch makes jqLite match this implementation while still supporting
previous bind/unbind methods.
$route, $routeParams and ngView have been pulled from core angular.js
to angular-route.js/ngRoute module.
This is was done to in order keep the core focused on most commonly
used functionality and allow community routers to be freely used
instead of $route service.
There is no need to panic, angular-route will keep on being supported
by the angular team.
Note: I'm intentionally not fixing tutorial links. Tutorial will need
bigger changes and those should be done when we update tutorial to
1.2.
BREAKING CHANGE: applications that use $route will now need to load
angular-route.js file and define dependency on ngRoute module.
Before:
```
...
<script src="angular.js"></script>
...
var myApp = angular.module('myApp', ['someOtherModule']);
...
```
After:
```
...
<script src="angular.js"></script>
<script src="angular-route.js"></script>
...
var myApp = angular.module('myApp', ['ngRoute', 'someOtherModule']);
...
```
Closes#2804
By appending directive-start and directive-end to a
directive it is now possible to have the directive
act on a group of elements.
It is now possible to iterate over multiple elements like so:
<table>
<tr ng-repeat-start="item in list">I get repeated</tr>
<tr ng-repeat-end>I also get repeated</tr>
</table>
If the timeout argument is a promise, abort the request when it is resolved.
Implemented by adding support to $httpBackend service and $httpBackend mock
service.
This api can also be used to explicitly abort requests while keeping the
communication between the deffered and promise unidirectional.
Closes#1159
Add '?' token to lexer, add ternary rule to parser at
(hopefully) proper precedence and associativity (based
on https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Operators/Operator_Precedence).
Since (exp1 && exp2 || exp3) is supported by the parser,
and (exp1 ? exp2 : exp3) works the same way, it seems
reasonable to add this minor form of control to templates
(see #719).
The default header is now application/json which while not perfect
in all cases is better than the browser default application/xml.
The new headers also makes for better compatibility with Rails 4
In line with ngSrc and ngHref, this new directive ensures that the
`srcset` HTML5 attribute does not include a pre-interpolated string.
Without it the browser will fetch from the URL with the literal text
`{{hash}}` until AngularJS replaces the expression inside `{{hash}}`.
Closes#2601
Added a comma separator in the statement
Removed the word the from the statement
Used whose instead of who's in the following statement
Italicized false in the statement
Used a comma separator in the statement
Extend ng-options with a new clause, "track by [trackByExpression]", which can be used when
working with objects. The `trackByExpression` should uniquely identify select options objects.
This solves the problem of previously having to match ng-options objects by identity.
You can now write: `ng-options="obj as obj.name for obj in objects track by obj.id"`
The "track by" expression will be used when checking for equality of objects.
Examples:
<select
ng-model="user.favMovieStub"
ng-options="movie as movie.name for movie in movies track by movie.id">
</select>
scope: {
user: { name: 'Test user', favMovieStub: { id: 1, name: 'Starwars' } }
movies: [{ id: 1, name: 'Starwars', rating: 5, ... }, { id: 13, ... }]
}
The select input will match user favMovieStub to the first movie in the movies array, and show
"Star Wars" as the selected item.
ngAnimate: Rename CSS classes in example code to work with new ngAnimate naming conventions
ngInclude: Include animations toggle in ngInclude example code
ngAnimate: Remove ms- prefix and fix up CSS animation example code
With this change, $browser.cookies()["foo"] will behave like
docCookies.getItem("foo") where docCookies is defined at
https://developer.mozilla.org/en-US/docs/DOM/document.cookie
This fixes the issue where, if there's a value for the XSRF-TOKEN cookie
value with the path /, then that value is used for all applications in
the domain even if they set path specific values for XSRF-TOKEN.
Closes#2635
BREAKING CHANGE: css classes foo-setup/foo-start become foo/foo-active
The CSS transition classes have changed suffixes. To migrate rename
.foo-setup {...} to .foo {...}
.foo-start {...} to .foo-active {...}
or for type: enter, leave, move, show, hide
.foo-type-setup {...} to .foo-type {...}
.foo-type-start {...} to .foo-type-active {...}
This date {{2003-09-10T13:02:03.123456Z | date: yyyy-mm-dd ss} is now
treated as having 123.45ms. Previously it had 123456ms so 123 seconds
were added to the formatted date.
Use local date in unit tests so they work in any time zone
Fix a check inside render for select elements with ngOptions, which
compares the selected property of an element with it's desired state.
Ensure the placeholder, if available, is explicitly selected if the model
value can not be found in the option list.
Without these fixes it's up to the browser implementation to decide which
option to choose. In most browsers, this has the effect of displaying the
first item in the list. In IE9 however, this causes the select to display
nothing.
Closes#2150, #1826
In older Android browsers, `undefined` does not act like `0` in some
arithmetic operations. This leads to dates being formatted with `NaN`
strings in the dateFilter because the implementation of the `dateGetter`
function allows offset to be an optional parameter.
The fix is to convert offset to 0 if it is undefined.
Closes#2277, #2275
Adding a $includeContentRequested event in order to better keep track of
how many includes are sent and be able to compare it with how many have
finished.
Documentation implies that timeout works for all requests, though it
only works with XHR. To implement:
- Change $httpBackend to set a timeout for JSONP requests which will
immediately resolve the request when fired.
- Cancel the timeout when requests are completed.
Fix a context duplication and invocation to a previous context when
doing an access modifier function on the result of a function
Currently, when doing `foo().bar()`, `foo` is called twice, the first
time to get the context and the second one for `bar` to get the
underlying object. Then the call to `bar` is called using the second
instance as self
This is equivalent to doing:
```
var instance1 = foo();
var instance2 = foo();
instance2.bar.apply(instance1);
```
Closes#2496
Change modulo % 2 operations to bitwise & 1
Read about this in Nicholas C. Zakas book "High Performance JavaScript"(ISBN: 978-0-596-80279-0)
Use the Fast Parts --> Bitwise Operators --> Page 156++
Proven at http://jsperf.com/modulo-vs-bitwise/11
Support ng-controller="MyController as my" syntax
which publishes the controller instance to the
current scope.
Also supports exporting a controller defined with route:
````javascript
angular.module('routes', [], function($routeProvider) {
$routeProvider.when('/home', {controller: 'Ctrl as home', templateUrl: '...'});
});
````
This directive is adapted from ui-if in the AngularUI project and provides a complement
to the ngShow/ngHide directives that only change the visibility of the DOM element and
ngSwitch which does change the DOM but is more verbose.
In IE the model is not updated when the input value is modified using the context
menu, e.g. pasting from the clipboard, or cutting all or part of the current value.
To capture these changes, we bind to the proprietary 'paste' and 'cut' events.
Closes#1462
If you wire up ngClass directly to an object on the scope, e.g. ng-class="myClasses",
where scope.myClasses = { 'classA': true, 'classB': false },
there was a bug that changing scope.myClasses.classA = false, was not being picked
up and classA was not being removed from the element's CSS classes.
This fix uses angular.equals for the comparison and ensures that oldVal is a copy of
(rather than a reference to) the newVal.
I hope this helps someone, I ran into some issues when following the API as described - handlers of this event receive 3 arguments, not 2.
Although this is mentioned [elsewhere](http://docs.angularjs.org/api/ng.$rootScope.Scope#$on) it's not clear when viewing the docs for this behaviour in isolation.
The first argument is an Event Object, not the current route. The previous route argument can also be omitted on occasions.
In situations where path() matched basepath and we needed to
convert from html5 url to hashbang url, the $location service
considered the url to be already rewritten, which resulted in
an error.
Preserve the order of the elements that are not part of a case nor default in
a ng-switch directive
BREAKING CHANGE: elements not in the ng-switch were rendered after the
ng-switch elements. Now they are rendered in-place.
Ng-switch directives should be updated with non ng-switch elements
in render-order. e.g.
The following was previously rendered with <li>1</li> after "2":
<ul ng-switch="select">
<li>1</li>
<li ng-switch-when="option">2</li>
</ul>
To keep the old behaviour, say:
<ul ng-switch="select">
<li ng-switch-when="1">2</li>
<li>1</li>
</ul>
Closes#1074
the `nextRoute` object available in `$routeChangeStart` handler
accidentaly leaked property which pointed to the route definition
currently being matched.
this was done just for the internal needs of the `$route` implementation
and was never documented as public api.
Some confusion arouse around why the $route property was not always
available on the `nextRoute` object (see #1907). The right thing for us
to do is to prefix the property with $$ for now and refactor the code
to remove the property completely in the future. Application developers
should use the `nextRoute` object itself rather than its `$route` property.
The main diff is that nextRoute inherits from the object referenced by $route.
BREAKING CHANGE: in $routeChangeStart event, nextRoute.$route property is gone.
Use the nextRoute object instead of nextRoute.$route.
Closes#1907
When we need more control over http caching, we may want to provide
a custom cache to be used in all http requests by default.
To skip default cache, set {cache: false} in request configuration.
To use other cache, set {cache: cache} as before.
See #2079
A directive can now set/update/remove attribute values even those containing
interpolation during the compile phase and have the new value be picked up
during the compilation.
For example in template:
<div replace-directive some-attr-or-directive="{{originalInterpolationValue}}"></div>
the replace-directive can now replace the value of some-attr-or-directive during compilation
which produces this intermitent template:
<div replace-directive some-attr-or-directive="{{replacedInterpolationValue}}"></div>
or even
<div replace-directive some-attr-or-directive="replacedStaticValue"></div>
as well as
<div replace-directive some-attr-or-directive></div>
Sometimes is not desirable to use interpolation on attributes because
the user agent parses them before the interpolation takes place. I.e:
<svg>
<circle cx="{{cx}}" cy="{{cy}}" r="{{r}}"></circle>
</svg>
The snippet throws three browser errors, one for each attribute.
For some attributes, AngularJS fixes that behaviour introducing special
directives like ng-href or ng-src.
This commit is a more general solution that allows prefixing any
attribute with "ng-attr-", "ng:attr:" or "ng_attr_" so it will
be set only when the binding is done. The prefix is then removed.
Example usage:
<svg>
<circle ng-attr-cx="{{cx}}" ng-attr-cy="{{cy}}" ng:attr-r="{{r}}"></circle>
</svg>
Closes#1050Closes#1925
Passing DOMNode#childNodes to compileNodes when compiling remote
template, so that directives with replace:true can be compiled.
The previous version used jqLite#contents which returned collection
that was not updated during the compilation.
Closes#1859
If you bind using '=' to a non-existant parent property, the compiler
will throw a NON_ASSIGNABLE_MODEL_EXPRESSION exception, which is right
because the model doesn't exist.
This enhancement allow to specify that a binding is optional so it
won't complain if the parent property is not defined. In order to mantain
backward compability, the new behaviour must be specified using '=?' instead
of '='. The local property will be undefined is these cases.
Closes#909Closes#1435
When waiting for several promises at once, it is often desirable to
have them by name, not just by index in array.
Example of this kind of interface already implemented would be a
$routeProvider.when(url, {resolve: <hash of promises>}), where
resources/promises are given by names, and then results accessed
by names in controller.
If responseType is defined and the request fails for one reason or another
the .response property returned falsy value which caused dereferencing of
.responseText. If the responseType was a blob or document then an error
was thrown.
To prevent this, I'm checking for responseType first and based on that
dereferencing .response or .responseText.
We need to keep on checking .responseText because that's the original XHR
response api that is still needed for IE8 and 9.
Closes#1922
ngClassWatchAction, when called as a $watch function, gets the wrong old
value after it has been invoked previously due to observation of the
interpolated class attribute. As a result it doesn't remove classes
properly. Keeping track of the old value manually seems to fix this.
Closes#1637
The change to prevent <span> elements being wrapped around empty text nodes caused these empty text nodes to have scopes and controllers attached, through jqLite.data() calls, which led to memory leaks and errors in IE8.
Now we exclude all but document nodes and elements from having jqLite.data() set both in the compiler and in ng-view.
Fixes: #1968 and #1876
This allows routeProvider to accept parameters that matches
substrings even when they contain slashes if they are prefixed
with an asterisk instead of a colon.
For example, routes like edit/color/:color/largecode/*largecode
will match with something like this
http://appdomain.com/edit/color/brown/largecode/code/with/slashs.
A workaround for https://bugzilla.mozilla.org/show_bug.cgi?id=608735
In FF getAllResponseHeaders() returns null if the request is the result of CORS.
Tried to format the code so that when a FF patch is released and gains enough
traction it can easily be selected and deleted. Heavily inspired by jQuery's
patch for the same bug. This patch falls short of passing through custom headers
but covers all of the "simple response headers" in the spec at
http://www.w3.org/TR/cors/
This commit should get reverted once Firefox 21 gets out.
Closes#1468
Apparently there is a really weird bug in IE6-8 that causes anchor textContent
to be reset with href content when both contain @ symbol.
Inserting a bogus comment node into all anchor elements in IE works around this
browser bug.
I'm fixing the issue via directive because that way we'll fix it for jQuery as
well.
I fixed an e2e test too because it was incorrect.
Closes#1949
encodeURIComponent is too aggressive and doesn't follow http://www.ietf.org/rfc/rfc3986.txt
with regards to the character set (pchar) allowed in path segments so we need
this test to make sure that we don't over-encode the params and break stuff
like buzz api which uses @self.
This is has already been fixed in `$resource`. This commit fixes it in a same way
for `$http` as well.
BREAKING CHANGE: $http does follow RFC3986 and does not encode special characters
like `$@,:` in params. If your application needs to encode these characters, encode
them manually, before sending the request.
* `literal` is set to true if the expression's top-level is a JavaScript
literal (number, string, boolean, null/undefined, array, object), even
if it contains non-literals inside.
* `constant` is set to true if the expression is known to be made
entirely of constant values, i.e., evaluating it will always yield the
same result.
A consequence is that a JSON expression is guaranteed to be both literal
and constant.
Add optional comparator function argument to $filter('filter')(array,
expression, comparator) such that the comparator function is used to
compare the values and predicates. When true, defaults to equality.
When missing defaults to substring matching.
When checking to add decimal and trialing 0s number filter used to check
trueness of fractionSize. "0" evaluating to true causes "123" to return "123."
Directives was observing different instances of Attributes than the one
that interpolation was registered with because we failed to realize
that the compile node and link node were the same (one of them
was a wrapper rather than raw node)
Closes#1941
Safari and IE don't like being told to store cookies with path set to
undefined. This change ensures that if base[href] (from which cookie path
is derived) is undefined then the cookie path defaults to ''.
The test verifies that the cookie is set instead of checking that cookie has correct path,
this is due to that cookie meta information is not avabile once the cookie is set.
Closes#1190, #1191
Add 'xsrfCookieName' and 'xsrfHeaderName' property to $httpProvider.defaults and
http config object, which give the name of the cookie the XSRF token is found
in, and the name of the header it is sent in, respectively.
This allows interop with servers with built-in XSRF support that use different
names.
The defaults match the current hard-coded values of 'XSRF-TOKEN' and
'X-XSRF-TOKEN'.
This commit fixes#1261 and #1532. This covers
two separate issues:
- Positive timezones were being formatted without
a leading `+` resulting in a formatting string
like: "HH:MM:ssZ" giving "12:13:141000" instead
of "12:13:14+1000". Fixed by checking if timezone
is > 0 and adding a leading "+".
- Timezone output signs were inverted.
mock.TzDate expects the timezone _offset_ as it's
first argument, _not_ the timezone. This means
that a mock.TzDate with a positive offset should
result in a date string with a negative timezone,
and vice-versa.
Closes#1261, #1532
The leak can occur when ngSwich is used inside ngRepeat or any other
directive which is destroyed while its transcluded content (which
includes ngSwitch) is not attached to the DOM.
Refactor ngSwitch to use controller instead of storing data on compile
node. This means that we don't need to clean up the jq data cache.
Controller reference is released when the linking fn is released.
Closes#1621
Update src/ng/exceptionHandler.js
Here's an iniitla attempt at documenting how one might write a
test using $exceptionHandlerProvider. The key take-away is the use
of this pattern:
it(...
module(...
$exceptionHandlerProvider.mode('log');
});
inject(...
);
});
If the $last property is calculated from the original collectionLength
on an object and properties starting with $ were filtered out, then $last
is never applied and $middle is applied erroniously.
Closes#1789
Commit 773ac4a broke support for route parameters that are not seperated
from other route parts by slashes, which this change fixes. It also adds
some documentation about path parameters to the when() method and
escapes all regular expression special characters in the URL, not just
some.
Support modifying the DOM structure in the post link function of a directive
by creating a defensive copy of the node list, as opposed to a live DOM list.
This is useful for directives to actually replace their entire DOM fragment,
e.g. with the HTML fragment generated by a 3rd party component (Closure, Bootstrap ...).
Fix the indentation of the compileNodes function (was one too little).
previously we were always parsing the string input as UTC which cased issues like:
{{ '2012-04-01' | date:'d MMM yyyy' }} renders as 31 Mar 2012
BREAKING CHANGE: string input without timezone info is now parsed as local time/date
Closes#847
the warning is defunct (and the test is incorrect) so obviously nobody is using
it and it just takes up space.
also the browser behavior varies (ff and chrome allow up to 150 cookies, safari
even more), so it's not very useful.
Closes#1712
This reverts commit c81d8176cc.
This commit causes several issues (#1651, #1674, #1662) and doesn't even
contain a test that proves that anything on Opera got actually fixed.
If the original Opera resurfaces, we'll fix it properly.
Routes like '/bar/foovalue/barvalue' matching '/bar/:foo/:bar'
now are well mapped in $routeParams to:
{bar:'barvalue', foo:'foovalue'}
Closes: #1501
Signed-off-by: Gonzalo Ruiz de Villa <gonzaloruizdevilla@gmail.com>
This is needed to prevent CORS preflight checks. The XSFR token
is quite useless for CORS requests anyway.
BREAKING CHANGE: X-XSFR-TOKEN is no longer send for cross domain
requests. This shouldn't affect any known production service.
Closes#1096
X-Requested-With header is rarely used in practice and by using
it all the time we are triggering preflight checks for crossdomain
requests.
We could try detecting if we are doing CORS requests or not, but
it doesn't look like it's worth the trouble.
BREAKING CHANGE: X-Requested-With header is not set by $http service
any more. If anyone actually uses this header it's quite easy to add
it back via:
```
myAppModule.config(['$httpProvider', function($httpProvider) {
$httpProvider.defaults.headers.common["X-Requested-With"] = 'XMLHttpRequest';
}]);
```
Closes#1004
I'm reverting changes that were originally done to ngRepeat to fix#933,
because these are now not necessary after the previous changes to keep
ngModel always synced with the DOM.
In cases when we reuse elements in a repeater but associate
them with a new scope (see #933 - repeating over array of
primitives) it's possible for the internal ngModel state and
the scope state to get out of sync. This change ensure that
the two are always sync-ed up even in cases where we
reassociate an element with a different (but similar) scope.
In the case of repeating over array of primitives it's still
possible to run into issue if we iterate over primitives and
use form controls or similar widgets without ngModel - oh well,
we'd likely need a special repeater for primitives to deal
with this properly, even then there might be cornercases.
Closes#933
I'm keeping this in for future reference. The issue with this solution
is that if we shift() the first item in the array, the whole repeater
DOM will be rebuilt from scratch, we need to do better than that.
Today, calling e.g. $http(url, { params: { a: [1,2,3] } }) results in a query
string like "?a=%5B1%2C2%2C3%5D" which is undesirable. This commit enhances
buildURL to createa query string like "?a=1&a=2&a=3".
BREAKING CHANGE: if the server relied on the buggy behavior then either the
backend should be fixed or a simple serialization of the array should be done
on the client before calling the $http service.
Closes#1363
window.SecurityPolicy.isActive() is now window.securityPolicy.isActive
since this is available only in Chrome Canary which has already been
updated, we can safely make this change without worrying about
backwards compatilibty.
Closes#1577
Bug caused by the use of the `||` operator to replace all non-truthy
values with an empty string. Changed to replace only `undefined` values.
Closes#1401
This fixes the issue that caused two attr interpolation observers
to be registered for the same attribute as a result of isolate
scope definition with attr (@) property for this attribute.
Duplicate observers would then fight with each other updating the
model.
The issue occured only when this directive was used in a repeater
because that's when we clone the template node which caused the
two observers to point to two different sets of $attr instances.
Closes#1166, #836
IEEE 754 floating point sometimes results in values that are very small,
rather than zero. One example is 1.0 + 1.07 - 2.07, which returns
4.440892098500626e-16 instead of 0.
This change tweaks the number formatting logic so that an exponential
value with a negative exponent that is larger than the precision+1
returns 0 instead. For example: with precision 2, anything with an
exponent of -4, -5 or more would become 0. 9e-3 = 0.009 = 0.01, but 9e-4
= 0.0009 = 0.001 = 0.00. This detail is unlikely to matter since this
quirk is usually only triggered with values very close to zero.
Closes#1469
This was really corner case:
Watcher needs to return changed value, to notify that model might have changed and one more $digest cycle needs to be performed.
The watcher, that takes care of reference binding into an isolate scope ("="), did not return changed value, if the change was from the isolate scope to the parent.
If any other watcher returned change, it worked fine, as this change caused re-digest.
Closes#1272
Having one async queue per scope complicates the matters when users wish to do
partial scope updates, since many services put events on the rootScope. By
having single queue the programing model is simplified.
