angular.js/src/services.js
2011-02-01 09:35:19 -08:00

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var URL_MATCH = /^(file|ftp|http|https):\/\/(\w+:{0,1}\w*@)?([\w\.-]*)(:([0-9]+))?(\/[^\?#]*)?(\?([^#]*))?(#(.*))?$/,
HASH_MATCH = /^([^\?]*)?(\?([^\?]*))?$/,
DEFAULT_PORTS = {'http': 80, 'https': 443, 'ftp':21},
EAGER = true;
function angularServiceInject(name, fn, inject, eager) {
angularService(name, fn, {$inject:inject, $eager:eager});
}
/**
* @workInProgress
* @ngdoc service
* @name angular.service.$window
*
* @description
* Is reference to the browser's `window` object. While `window`
* is globally available in JavaScript, it causes testability problems, because
* it is a global variable. In angular we always refer to it through the
* `$window` service, so it may be overriden, removed or mocked for testing.
*
* All expressions are evaluated with respect to current scope so they don't
* suffer from window globality.
*
* @example
<input ng:init="$window = $service('$window'); greeting='Hello World!'" type="text" name="greeting" />
<button ng:click="$window.alert(greeting)">ALERT</button>
*/
angularServiceInject("$window", bind(window, identity, window), [], EAGER);
/**
* @workInProgress
* @ngdoc service
* @name angular.service.$document
* @requires $window
*
* @description
* Reference to the browser window.document, but wrapped into angular.element().
*/
angularServiceInject("$document", function(window){
return jqLite(window.document);
}, ['$window'], EAGER);
/**
* @workInProgress
* @ngdoc service
* @name angular.service.$location
* @requires $browser
*
* @property {string} href
* @property {string} protocol
* @property {string} host
* @property {number} port
* @property {string} path
* @property {Object.<string|boolean>} search
* @property {string} hash
* @property {string} hashPath
* @property {Object.<string|boolean>} hashSearch
*
* @description
* Parses the browser location url and makes it available to your application.
* Any changes to the url are reflected into $location service and changes to
* $location are reflected to url.
* Notice that using browser's forward/back buttons changes the $location.
*
* @example
<a href="#">clear hash</a> |
<a href="#myPath?name=misko">test hash</a><br/>
<input type='text' name="$location.hash"/>
<pre>$location = {{$location}}</pre>
*/
angularServiceInject("$location", function($browser) {
var scope = this,
location = {update:update, updateHash: updateHash},
lastLocation = {};
$browser.onHashChange(function() { //register
update($browser.getUrl());
copy(location, lastLocation);
scope.$eval();
})(); //initialize
this.$onEval(PRIORITY_FIRST, sync);
this.$onEval(PRIORITY_LAST, updateBrowser);
return location;
// PUBLIC METHODS
/**
* @workInProgress
* @ngdoc method
* @name angular.service.$location#update
* @methodOf angular.service.$location
*
* @description
* Update location object
* Does not immediately update the browser
* Browser is updated at the end of $eval()
*
* @example
* scope.$location.update('http://www.angularjs.org/path#hash?search=x');
* scope.$location.update({host: 'www.google.com', protocol: 'https'});
* scope.$location.update({hashPath: '/path', hashSearch: {a: 'b', x: true}});
*
* @param {(string|Object)} href Full href as a string or object with properties
*/
function update(href) {
if (isString(href)) {
extend(location, parseHref(href));
} else {
if (isDefined(href.hash)) {
extend(href, isString(href.hash) ? parseHash(href.hash) : href.hash);
}
extend(location, href);
if (isDefined(href.hashPath || href.hashSearch)) {
location.hash = composeHash(location);
}
location.href = composeHref(location);
}
}
/**
* @workInProgress
* @ngdoc method
* @name angular.service.$location#updateHash
* @methodOf angular.service.$location
*
* @description
* Update location hash part
* @see update()
*
* @example
* scope.$location.updateHash('/hp')
* ==> update({hashPath: '/hp'})
*
* scope.$location.updateHash({a: true, b: 'val'})
* ==> update({hashSearch: {a: true, b: 'val'}})
*
* scope.$location.updateHash('/hp', {a: true})
* ==> update({hashPath: '/hp', hashSearch: {a: true}})
*
* @param {(string|Object)} path A hashPath or hashSearch object
* @param {Object=} search A hashSearch object
*/
function updateHash(path, search) {
var hash = {};
if (isString(path)) {
hash.hashPath = path;
if (isDefined(search))
hash.hashSearch = search;
} else
hash.hashSearch = path;
hash.hash = composeHash(hash);
update({hash: hash});
}
// INNER METHODS
/**
* Synchronizes all location object properties.
*
* User is allowed to change properties, so after property change,
* location object is not in consistent state.
*
* Properties are synced with the following precedence order:
*
* - `$location.href`
* - `$location.hash`
* - everything else
*
* @example
* scope.$location.href = 'http://www.angularjs.org/path#a/b'
* immediately after this call, other properties are still the old ones...
*
* This method checks the changes and update location to the consistent state
*/
function sync() {
if (!equals(location, lastLocation)) {
if (location.href != lastLocation.href) {
update(location.href);
return;
}
if (location.hash != lastLocation.hash) {
var hash = parseHash(location.hash);
updateHash(hash.hashPath, hash.hashSearch);
} else {
location.hash = composeHash(location);
location.href = composeHref(location);
}
update(location.href);
}
}
/**
* If location has changed, update the browser
* This method is called at the end of $eval() phase
*/
function updateBrowser() {
sync();
if ($browser.getUrl() != location.href) {
$browser.setUrl(location.href);
copy(location, lastLocation);
}
}
/**
* Compose href string from a location object
*
* @param {Object} loc The location object with all properties
* @return {string} Composed href
*/
function composeHref(loc) {
var url = toKeyValue(loc.search);
var port = (loc.port == DEFAULT_PORTS[loc.protocol] ? _null : loc.port);
return loc.protocol + '://' + loc.host +
(port ? ':' + port : '') + loc.path +
(url ? '?' + url : '') + (loc.hash ? '#' + loc.hash : '');
}
/**
* Compose hash string from location object
*
* @param {Object} loc Object with hashPath and hashSearch properties
* @return {string} Hash string
*/
function composeHash(loc) {
var hashSearch = toKeyValue(loc.hashSearch);
//TODO: temporary fix for issue #158
return escape(loc.hashPath).replace(/%21/gi, '!').replace(/%3A/gi, ':').replace(/%24/gi, '$') +
(hashSearch ? '?' + hashSearch : '');
}
/**
* Parse href string into location object
*
* @param {string} href
* @return {Object} The location object
*/
function parseHref(href) {
var loc = {};
var match = URL_MATCH.exec(href);
if (match) {
loc.href = href.replace(/#$/, '');
loc.protocol = match[1];
loc.host = match[3] || '';
loc.port = match[5] || DEFAULT_PORTS[loc.protocol] || _null;
loc.path = match[6] || '';
loc.search = parseKeyValue(match[8]);
loc.hash = match[10] || '';
extend(loc, parseHash(loc.hash));
}
return loc;
}
/**
* Parse hash string into object
*
* @param {string} hash
*/
function parseHash(hash) {
var h = {};
var match = HASH_MATCH.exec(hash);
if (match) {
h.hash = hash;
h.hashPath = unescape(match[1] || '');
h.hashSearch = parseKeyValue(match[3]);
}
return h;
}
}, ['$browser']);
/**
* @workInProgress
* @ngdoc service
* @name angular.service.$log
* @requires $window
*
* @description
* Simple service for logging. Default implementation writes the message
* into the browser's console (if present).
*
* The main purpose of this service is to simplify debugging and troubleshooting.
*
* @example
<p>Reload this page with open console, enter text and hit the log button...</p>
Message:
<input type="text" name="message" value="Hello World!"/>
<button ng:click="$log.log(message)">log</button>
<button ng:click="$log.warn(message)">warn</button>
<button ng:click="$log.info(message)">info</button>
<button ng:click="$log.error(message)">error</button>
*/
var $logFactory; //reference to be used only in tests
angularServiceInject("$log", $logFactory = function($window){
return {
/**
* @workInProgress
* @ngdoc method
* @name angular.service.$log#log
* @methodOf angular.service.$log
*
* @description
* Write a log message
*/
log: consoleLog('log'),
/**
* @workInProgress
* @ngdoc method
* @name angular.service.$log#warn
* @methodOf angular.service.$log
*
* @description
* Write a warning message
*/
warn: consoleLog('warn'),
/**
* @workInProgress
* @ngdoc method
* @name angular.service.$log#info
* @methodOf angular.service.$log
*
* @description
* Write an information message
*/
info: consoleLog('info'),
/**
* @workInProgress
* @ngdoc method
* @name angular.service.$log#error
* @methodOf angular.service.$log
*
* @description
* Write an error message
*/
error: consoleLog('error')
};
function consoleLog(type) {
var console = $window.console || {};
var logFn = console[type] || console.log || noop;
if (logFn.apply) {
return function(){
var args = [];
forEach(arguments, function(arg){
args.push(formatError(arg));
});
return logFn.apply(console, args);
};
} else {
// we are IE, in which case there is nothing we can do
return logFn;
}
}
}, ['$window'], EAGER);
/**
* @workInProgress
* @ngdoc service
* @name angular.service.$exceptionHandler
* @requires $log
*
* @description
* Any uncaught exception in angular expressions is delegated to this service.
* The default implementation simply delegates to `$log.error` which logs it into
* the browser console.
*
* In unit tests, if `angular-mocks.js` is loaded, this service is overriden by
* {@link angular.mock.service.$exceptionHandler mock $exceptionHandler}
*
* @example
*/
var $exceptionHandlerFactory; //reference to be used only in tests
angularServiceInject('$exceptionHandler', $exceptionHandlerFactory = function($log){
return function(e) {
$log.error(e);
};
}, ['$log'], EAGER);
/**
* @workInProgress
* @ngdoc service
* @name angular.service.$updateView
* @requires $browser
*
* @description
* Calling `$updateView` enqueues the eventual update of the view. (Update the DOM to reflect the
* model). The update is eventual, since there are often multiple updates to the model which may
* be deferred. The default update delayed is 25 ms. This means that the view lags the model by
* that time. (25ms is small enough that it is perceived as instantaneous by the user). The delay
* can be adjusted by setting the delay property of the service.
*
* <pre>angular.service('$updateView').delay = 10</pre>
*
* The delay is there so that multiple updates to the model which occur sufficiently close
* together can be merged into a single update.
*
* You don't usually call '$updateView' directly since angular does it for you in most cases,
* but there are some cases when you need to call it.
*
* - `$updateView()` called automatically by angular:
* - Your Application Controllers: Your controller code is called by angular and hence
* angular is aware that you may have changed the model.
* - Your Services: Your service is usually called by your controller code, hence same rules
* apply.
* - May need to call `$updateView()` manually:
* - Widgets / Directives: If you listen to any DOM events or events on any third party
* libraries, then angular is not aware that you may have changed state state of the
* model, and hence you need to call '$updateView()' manually.
* - 'setTimeout'/'XHR': If you call 'setTimeout' (instead of {@link angular.service.$defer})
* or 'XHR' (instead of {@link angular.service.$xhr}) then you may be changing the model
* without angular knowledge and you may need to call '$updateView()' directly.
*
* NOTE: if you wish to update the view immediately (without delay), you can do so by calling
* {@link scope.$eval} at any time from your code:
* <pre>scope.$root.$eval()</pre>
*
* In unit-test mode the update is instantaneous and synchronous to simplify writing tests.
*
*/
function serviceUpdateViewFactory($browser){
var rootScope = this;
var scheduled;
function update(){
scheduled = false;
rootScope.$eval();
}
return $browser.isMock ? update : function(){
if (!scheduled) {
scheduled = true;
$browser.defer(update, serviceUpdateViewFactory.delay);
}
};
}
serviceUpdateViewFactory.delay = 25;
angularServiceInject('$updateView', serviceUpdateViewFactory, ['$browser']);
/**
* @workInProgress
* @ngdoc service
* @name angular.service.$hover
* @requires $browser
* @requires $document
*
* @description
*
* @example
*/
angularServiceInject("$hover", function(browser, document) {
var tooltip, self = this, error, width = 300, arrowWidth = 10, body = jqLite(document[0].body);
browser.hover(function(element, show){
if (show && (error = element.attr(NG_EXCEPTION) || element.attr(NG_VALIDATION_ERROR))) {
if (!tooltip) {
tooltip = {
callout: jqLite('<div id="ng-callout"></div>'),
arrow: jqLite('<div></div>'),
title: jqLite('<div class="ng-title"></div>'),
content: jqLite('<div class="ng-content"></div>')
};
tooltip.callout.append(tooltip.arrow);
tooltip.callout.append(tooltip.title);
tooltip.callout.append(tooltip.content);
body.append(tooltip.callout);
}
var docRect = body[0].getBoundingClientRect(),
elementRect = element[0].getBoundingClientRect(),
leftSpace = docRect.right - elementRect.right - arrowWidth;
tooltip.title.text(element.hasClass("ng-exception") ? "EXCEPTION:" : "Validation error...");
tooltip.content.text(error);
if (leftSpace < width) {
tooltip.arrow.addClass('ng-arrow-right');
tooltip.arrow.css({left: (width + 1)+'px'});
tooltip.callout.css({
position: 'fixed',
left: (elementRect.left - arrowWidth - width - 4) + "px",
top: (elementRect.top - 3) + "px",
width: width + "px"
});
} else {
tooltip.arrow.addClass('ng-arrow-left');
tooltip.callout.css({
position: 'fixed',
left: (elementRect.right + arrowWidth) + "px",
top: (elementRect.top - 3) + "px",
width: width + "px"
});
}
} else if (tooltip) {
tooltip.callout.remove();
tooltip = _null;
}
});
}, ['$browser', '$document'], EAGER);
/**
* @workInProgress
* @ngdoc service
* @name angular.service.$invalidWidgets
*
* @description
* Keeps references to all invalid widgets found during validation.
* Can be queried to find whether there are any invalid widgets currently displayed.
*
* @example
*/
angularServiceInject("$invalidWidgets", function(){
var invalidWidgets = [];
/** Remove an element from the array of invalid widgets */
invalidWidgets.markValid = function(element){
var index = indexOf(invalidWidgets, element);
if (index != -1)
invalidWidgets.splice(index, 1);
};
/** Add an element to the array of invalid widgets */
invalidWidgets.markInvalid = function(element){
var index = indexOf(invalidWidgets, element);
if (index === -1)
invalidWidgets.push(element);
};
/** Return count of all invalid widgets that are currently visible */
invalidWidgets.visible = function() {
var count = 0;
forEach(invalidWidgets, function(widget){
count = count + (isVisible(widget) ? 1 : 0);
});
return count;
};
/* At the end of each eval removes all invalid widgets that are not part of the current DOM. */
this.$onEval(PRIORITY_LAST, function() {
for(var i = 0; i < invalidWidgets.length;) {
var widget = invalidWidgets[i];
if (isOrphan(widget[0])) {
invalidWidgets.splice(i, 1);
if (widget.dealoc) widget.dealoc();
} else {
i++;
}
}
});
/**
* Traverses DOM element's (widget's) parents and considers the element to be an orphant if one of
* it's parents isn't the current window.document.
*/
function isOrphan(widget) {
if (widget == window.document) return false;
var parent = widget.parentNode;
return !parent || isOrphan(parent);
}
return invalidWidgets;
}, [], EAGER);
function switchRouteMatcher(on, when, dstName) {
var regex = '^' + when.replace(/[\.\\\(\)\^\$]/g, "\$1") + '$',
params = [],
dst = {};
forEach(when.split(/\W/), function(param){
if (param) {
var paramRegExp = new RegExp(":" + param + "([\\W])");
if (regex.match(paramRegExp)) {
regex = regex.replace(paramRegExp, "([^\/]*)$1");
params.push(param);
}
}
});
var match = on.match(new RegExp(regex));
if (match) {
forEach(params, function(name, index){
dst[name] = match[index + 1];
});
if (dstName) this.$set(dstName, dst);
}
return match ? dst : _null;
}
/**
* @workInProgress
* @ngdoc service
* @name angular.service.$route
* @requires $location
*
* @property {Object} current Reference to the current route definition.
* @property {Array.<Object>} routes Array of all configured routes.
*
* @description
* Watches `$location.hashPath` and tries to map the hash to an existing route
* definition. It is used for deep-linking URLs to controllers and views (HTML partials).
*
* The `$route` service is typically used in conjunction with {@link angular.widget.ng:view ng:view}
* widget.
*
* @example
<p>
This example shows how changing the URL hash causes the <tt>$route</tt>
to match a route against the URL, and the <tt>[[ng:include]]</tt> pulls in the partial.
Try changing the URL in the input box to see changes.
</p>
<script>
angular.service('myApp', function($route) {
$route.when('/Book/:bookId', {template:'rsrc/book.html', controller:BookCntl});
$route.when('/Book/:bookId/ch/:chapterId', {template:'rsrc/chapter.html', controller:ChapterCntl});
$route.onChange(function() {
$route.current.scope.params = $route.current.params;
});
}, {$inject: ['$route']});
function BookCntl() {
this.name = "BookCntl";
}
function ChapterCntl() {
this.name = "ChapterCntl";
}
</script>
Chose:
<a href="#/Book/Moby">Moby</a> |
<a href="#/Book/Moby/ch/1">Moby: Ch1</a> |
<a href="#/Book/Gatsby">Gatsby</a> |
<a href="#/Book/Gatsby/ch/4?key=value">Gatsby: Ch4</a><br/>
<input type="text" name="$location.hashPath" size="80" />
<pre>$location={{$location}}</pre>
<pre>$route.current.template={{$route.current.template}}</pre>
<pre>$route.current.params={{$route.current.params}}</pre>
<pre>$route.current.scope.name={{$route.current.scope.name}}</pre>
<hr/>
<ng:include src="$route.current.template" scope="$route.current.scope"/>
*/
angularServiceInject('$route', function(location) {
var routes = {},
onChange = [],
matcher = switchRouteMatcher,
parentScope = this,
dirty = 0,
$route = {
routes: routes,
/**
* @workInProgress
* @ngdoc method
* @name angular.service.$route#onChange
* @methodOf angular.service.$route
*
* @param {function()} fn Function that will be called when `$route.current` changes.
*
* @description
* Register a handler function that will be called when route changes
*/
onChange: bind(onChange, onChange.push),
/**
* @workInProgress
* @ngdoc method
* @name angular.service.$route#parent
* @methodOf angular.service.$route
*
* @param {Scope} [scope=rootScope] Scope to be used as parent for newly created
* `$route.current.scope` scopes.
*
* @description
* Sets a scope to be used as the parent scope for scopes created on route change. If not
* set, defaults to the root scope.
*/
parent: function(scope) {
if (scope) parentScope = scope;
},
/**
* @workInProgress
* @ngdoc method
* @name angular.service.$route#when
* @methodOf angular.service.$route
*
* @param {string} path Route path (matched against `$location.hash`)
* @param {Object} params Mapping information to be assigned to `$route.current` on route
* match.
*
* Object properties:
*
* - `controller` `{function()=}` Controller fn that should be associated with newly
* created scope.
* - `template` `{string=}` path to an html template that should be used by
* {@link angular.widget.ng:view ng:view} or
* {@link angular.widget.ng:include ng:include} widgets.
* - `redirectTo` {string=} value to update
* {@link angular.service.$location $location} hash with and trigger route
* redirection.
*
* @returns {Object} route object
*
* @description
* Adds a new route definition to the `$route` service.
*/
when:function (path, params) {
if (isUndefined(path)) return routes; //TODO(im): remove - not needed!
var route = routes[path];
if (!route) route = routes[path] = {};
if (params) extend(route, params);
dirty++;
return route;
},
/**
* @workInProgress
* @ngdoc method
* @name angular.service.$route#otherwise
* @methodOf angular.service.$route
*
* @description
* Sets route definition that will be used on route change when no other route definition
* is matched.
*
* @param {Object} params Mapping information to be assigned to `$route.current`.
*/
otherwise: function(params) {
$route.when(null, params);
},
/**
* @workInProgress
* @ngdoc method
* @name angular.service.$route#reload
* @methodOf angular.service.$route
*
* @description
* Causes `$route` service to reload (and recreate the `$route.current` scope) upon the next
* eval even if {@link angular.service.$location $location} hasn't changed.
*/
reload: function() {
dirty++;
}
};
function updateRoute(){
var childScope, routeParams, pathParams;
$route.current = _null;
forEach(routes, function(rParams, rPath) {
if (!pathParams) {
if (pathParams = matcher(location.hashPath, rPath)) {
routeParams = rParams;
}
}
});
// "otherwise" fallback
routeParams = routeParams || routes[_null];
if(routeParams) {
if (routeParams.redirectTo) {
location.updateHash(routeParams.redirectTo); //let $browser trigger next route change
return;
} else {
childScope = createScope(parentScope);
$route.current = extend({}, routeParams, {
scope: childScope,
params: extend({}, location.hashSearch, pathParams)
});
}
}
//fire onChange callbacks
forEach(onChange, parentScope.$tryEval);
if (childScope) {
childScope.$become($route.current.controller);
}
}
this.$watch(function(){return dirty + location.hash;}, updateRoute);
return $route;
}, ['$location']);
/**
* @workInProgress
* @ngdoc service
* @name angular.service.$xhr
* @requires $browser
* @requires $xhr.error
* @requires $log
*
* @description
*
* @example
*/
angularServiceInject('$xhr', function($browser, $error, $log){
var self = this;
return function(method, url, post, callback){
if (isFunction(post)) {
callback = post;
post = _null;
}
if (post && isObject(post)) {
post = toJson(post);
}
$browser.xhr(method, url, post, function(code, response){
try {
if (isString(response) && /^\s*[\[\{]/.exec(response) && /[\}\]]\s*$/.exec(response)) {
response = fromJson(response, true);
}
if (code == 200) {
callback(code, response);
} else {
$error(
{method: method, url:url, data:post, callback:callback},
{status: code, body:response});
}
} catch (e) {
$log.error(e);
} finally {
self.$eval();
}
});
};
}, ['$browser', '$xhr.error', '$log']);
/**
* @workInProgress
* @ngdoc service
* @name angular.service.$xhr.error
* @requires $log
*
* @description
*
* @example
*/
angularServiceInject('$xhr.error', function($log){
return function(request, response){
$log.error('ERROR: XHR: ' + request.url, request, response);
};
}, ['$log']);
/**
* @workInProgress
* @ngdoc service
* @name angular.service.$xhr.bulk
* @requires $xhr
* @requires $xhr.error
* @requires $log
*
* @description
*
* @example
*/
angularServiceInject('$xhr.bulk', function($xhr, $error, $log){
var requests = [],
scope = this;
function bulkXHR(method, url, post, callback) {
if (isFunction(post)) {
callback = post;
post = _null;
}
var currentQueue;
forEach(bulkXHR.urls, function(queue){
if (isFunction(queue.match) ? queue.match(url) : queue.match.exec(url)) {
currentQueue = queue;
}
});
if (currentQueue) {
if (!currentQueue.requests) currentQueue.requests = [];
currentQueue.requests.push({method: method, url: url, data:post, callback:callback});
} else {
$xhr(method, url, post, callback);
}
}
bulkXHR.urls = {};
bulkXHR.flush = function(callback){
forEach(bulkXHR.urls, function(queue, url){
var currentRequests = queue.requests;
if (currentRequests && currentRequests.length) {
queue.requests = [];
queue.callbacks = [];
$xhr('POST', url, {requests:currentRequests}, function(code, response){
forEach(response, function(response, i){
try {
if (response.status == 200) {
(currentRequests[i].callback || noop)(response.status, response.response);
} else {
$error(currentRequests[i], response);
}
} catch(e) {
$log.error(e);
}
});
(callback || noop)();
});
scope.$eval();
}
});
};
this.$onEval(PRIORITY_LAST, bulkXHR.flush);
return bulkXHR;
}, ['$xhr', '$xhr.error', '$log']);
/**
* @workInProgress
* @ngdoc service
* @name angular.service.$defer
* @requires $browser
* @requires $log
*
* @description
* Delegates to {@link angular.service.$browser.defer $browser.defer}, but wraps the `fn` function
* into a try/catch block and delegates any exceptions to
* {@link angular.services.$exceptionHandler $exceptionHandler} service.
*
* In tests you can use `$browser.defer.flush()` to flush the queue of deferred functions.
*
* @param {function()} fn A function, who's execution should be deferred.
*/
angularServiceInject('$defer', function($browser, $exceptionHandler, $updateView) {
var scope = this;
return function(fn) {
$browser.defer(function() {
try {
fn();
} catch(e) {
$exceptionHandler(e);
} finally {
$updateView();
}
});
};
}, ['$browser', '$exceptionHandler', '$updateView']);
/**
* @workInProgress
* @ngdoc service
* @name angular.service.$xhr.cache
* @requires $xhr
*
* @description
*
* @example
*/
angularServiceInject('$xhr.cache', function($xhr, $defer, $log){
var inflight = {}, self = this;
function cache(method, url, post, callback, verifyCache){
if (isFunction(post)) {
callback = post;
post = _null;
}
if (method == 'GET') {
var data, dataCached;
if (dataCached = cache.data[url]) {
$defer(function() { callback(200, copy(dataCached.value)); });
if (!verifyCache)
return;
}
if (data = inflight[url]) {
data.callbacks.push(callback);
} else {
inflight[url] = {callbacks: [callback]};
cache.delegate(method, url, post, function(status, response){
if (status == 200)
cache.data[url] = { value: response };
var callbacks = inflight[url].callbacks;
delete inflight[url];
forEach(callbacks, function(callback){
try {
(callback||noop)(status, copy(response));
} catch(e) {
$log.error(e);
}
});
});
}
} else {
cache.data = {};
cache.delegate(method, url, post, callback);
}
}
cache.data = {};
cache.delegate = $xhr;
return cache;
}, ['$xhr.bulk', '$defer', '$log']);
/**
* @workInProgress
* @ngdoc function
* @name angular.service.$resource
* @requires $xhr
*
* @description
* Is a factory which creates a resource object which lets you interact with
* <a href="http://en.wikipedia.org/wiki/Representational_State_Transfer" target="_blank">RESTful</a>
* server-side data sources.
* Resource object has action methods which provide high-level behaviors without
* the need to interact with the low level $xhr or XMLHttpRequest().
*
* <pre>
// Define CreditCard class
var CreditCard = $resource('/user/:userId/card/:cardId',
{userId:123, cardId:'@id'}, {
charge: {method:'POST', params:{charge:true}}
});
// We can retrieve a collection from the server
var cards = CreditCard.query();
// GET: /user/123/card
// server returns: [ {id:456, number:'1234', name:'Smith'} ];
var card = cards[0];
// each item is an instance of CreditCard
expect(card instanceof CreditCard).toEqual(true);
card.name = "J. Smith";
// non GET methods are mapped onto the instances
card.$save();
// POST: /user/123/card/456 {id:456, number:'1234', name:'J. Smith'}
// server returns: {id:456, number:'1234', name: 'J. Smith'};
// our custom method is mapped as well.
card.$charge({amount:9.99});
// POST: /user/123/card/456?amount=9.99&charge=true {id:456, number:'1234', name:'J. Smith'}
// server returns: {id:456, number:'1234', name: 'J. Smith'};
// we can create an instance as well
var newCard = new CreditCard({number:'0123'});
newCard.name = "Mike Smith";
newCard.$save();
// POST: /user/123/card {number:'0123', name:'Mike Smith'}
// server returns: {id:789, number:'01234', name: 'Mike Smith'};
expect(newCard.id).toEqual(789);
* </pre>
*
* The object returned from this function execution is a resource "class" which has "static" method
* for each action in the definition.
*
* Calling these methods invoke `$xhr` on the `url` template with the given `method` and `params`.
* When the data is returned from the server then the object is an instance of the resource type and
* all of the non-GET methods are available with `$` prefix. This allows you to easily support CRUD
* operations (create, read, update, delete) on server-side data.
<pre>
var User = $resource('/user/:userId', {userId:'@id'});
var user = User.get({userId:123}, function(){
user.abc = true;
user.$save();
});
</pre>
*
* It's worth noting that the callback for `get`, `query` and other method gets passed in the
* response that came from the server, so one could rewrite the above example as:
*
<pre>
var User = $resource('/user/:userId', {userId:'@id'});
User.get({userId:123}, function(u){
u.abc = true;
u.$save();
});
</pre>
*
*
* @param {string} url A parameterized URL template with parameters prefixed by `:` as in
* `/user/:username`.
* @param {Object=} paramDefaults Default values for `url` parameters. These can be overridden in
* `actions` methods.
* @param {Object.<Object>=} actions Map of actions available for the resource.
*
* Each resource comes preconfigured with `get`, `save`, `query`, `remove`, and `delete` to
* mimic the RESTful philosophy.
*
* To create your own actions, pass in a map keyed on action names (e.g. `'charge'`) with
* elements consisting of these properties:
*
* - `{string} method`: Request method type. Valid methods are: `GET`, `POST`, `PUT`, `DELETE`,
* and [`JSON`](http://en.wikipedia.org/wiki/JSON#JSONP) (also known as JSONP).
* - `{Object=} params`: Set of pre-bound parameters for the action.
* - `{boolean=} isArray`: If true then the returned object for this action is an array, see the
* pre-binding section.
* - `{boolean=} verifyCache`: If true then items returned from cache, are double checked by
* running the query again and updating the resource asynchroniously.
*
* Each service comes preconfigured with the following overridable actions:
* <pre>
* { 'get': {method:'GET'},
'save': {method:'POST'},
'query': {method:'GET', isArray:true},
'remove': {method:'DELETE'},
'delete': {method:'DELETE'} };
* </pre>
*
* @returns {Object} A resource "class".
*
* @example
<script>
function BuzzController($resource) {
this.Activity = $resource(
'https://www.googleapis.com/buzz/v1/activities/:userId/:visibility/:activityId/:comments',
{alt:'json', callback:'JSON_CALLBACK'},
{get:{method:'JSON', params:{visibility:'@self'}}, replies: {method:'JSON', params:{visibility:'@self', comments:'@comments'}}}
);
}
BuzzController.prototype = {
fetch: function() {
this.activities = this.Activity.get({userId:this.userId});
},
expandReplies: function(activity) {
activity.replies = this.Activity.replies({userId:this.userId, activityId:activity.id});
}
};
BuzzController.$inject = ['$resource'];
</script>
<div ng:controller="BuzzController">
<input name="userId" value="googlebuzz"/>
<button ng:click="fetch()">fetch</button>
<hr/>
<div ng:repeat="item in activities.data.items">
<h1 style="font-size: 15px;">
<img src="{{item.actor.thumbnailUrl}}" style="max-height:30px;max-width:30px;"/>
<a href="{{item.actor.profileUrl}}">{{item.actor.name}}</a>
<a href ng:click="expandReplies(item)" style="float: right;">Expand replies: {{item.links.replies[0].count}}</a>
</h1>
{{item.object.content | html}}
<div ng:repeat="reply in item.replies.data.items" style="margin-left: 20px;">
<img src="{{reply.actor.thumbnailUrl}}" style="max-height:30px;max-width:30px;"/>
<a href="{{reply.actor.profileUrl}}">{{reply.actor.name}}</a>: {{reply.content | html}}
</div>
</div>
</div>
*/
angularServiceInject('$resource', function($xhr){
var resource = new ResourceFactory($xhr);
return bind(resource, resource.route);
}, ['$xhr.cache']);
/**
* @workInProgress
* @ngdoc service
* @name angular.service.$cookies
* @requires $browser
*
* @description
* Provides read/write access to browser's cookies.
*
* Only a simple Object is exposed and by adding or removing properties to/from
* this object, new cookies are created/deleted at the end of current $eval.
*
* @example
*/
angularServiceInject('$cookies', function($browser) {
var rootScope = this,
cookies = {},
lastCookies = {},
lastBrowserCookies;
//creates a poller fn that copies all cookies from the $browser to service & inits the service
$browser.addPollFn(function() {
var currentCookies = $browser.cookies();
if (lastBrowserCookies != currentCookies) { //relies on browser.cookies() impl
lastBrowserCookies = currentCookies;
copy(currentCookies, lastCookies);
copy(currentCookies, cookies);
rootScope.$eval();
}
})();
//at the end of each eval, push cookies
//TODO: this should happen before the "delayed" watches fire, because if some cookies are not
// strings or browser refuses to store some cookies, we update the model in the push fn.
this.$onEval(PRIORITY_LAST, push);
return cookies;
/**
* Pushes all the cookies from the service to the browser and verifies if all cookies were stored.
*/
function push(){
var name,
value,
browserCookies,
updated;
//delete any cookies deleted in $cookies
for (name in lastCookies) {
if (isUndefined(cookies[name])) {
$browser.cookies(name, _undefined);
}
}
//update all cookies updated in $cookies
for(name in cookies) {
value = cookies[name];
if (!isString(value)) {
if (isDefined(lastCookies[name])) {
cookies[name] = lastCookies[name];
} else {
delete cookies[name];
}
} else if (value !== lastCookies[name]) {
$browser.cookies(name, value);
updated = true;
}
}
//verify what was actually stored
if (updated){
updated = false;
browserCookies = $browser.cookies();
for (name in cookies) {
if (cookies[name] !== browserCookies[name]) {
//delete or reset all cookies that the browser dropped from $cookies
if (isUndefined(browserCookies[name])) {
delete cookies[name];
} else {
cookies[name] = browserCookies[name];
}
updated = true;
}
}
}
}
}, ['$browser']);
/**
* @workInProgress
* @ngdoc service
* @name angular.service.$cookieStore
* @requires $cookies
*
* @description
* Provides a key-value (string-object) storage, that is backed by session cookies.
* Objects put or retrieved from this storage are automatically serialized or
* deserialized by angular's toJson/fromJson.
* @example
*/
angularServiceInject('$cookieStore', function($store) {
return {
/**
* @workInProgress
* @ngdoc method
* @name angular.service.$cookieStore#get
* @methodOf angular.service.$cookieStore
*
* @description
* Returns the value of given cookie key
*
* @param {string} key Id to use for lookup.
* @returns {Object} Deserialized cookie value.
*/
get: function(key) {
return fromJson($store[key]);
},
/**
* @workInProgress
* @ngdoc method
* @name angular.service.$cookieStore#put
* @methodOf angular.service.$cookieStore
*
* @description
* Sets a value for given cookie key
*
* @param {string} key Id for the `value`.
* @param {Object} value Value to be stored.
*/
put: function(key, value) {
$store[key] = toJson(value);
},
/**
* @workInProgress
* @ngdoc method
* @name angular.service.$cookieStore#remove
* @methodOf angular.service.$cookieStore
*
* @description
* Remove given cookie
*
* @param {string} key Id of the key-value pair to delete.
*/
remove: function(key) {
delete $store[key];
}
};
}, ['$cookies']);