Heartbeat: improve setting the errorstate, add ajaxurl to the settings object when loading on the front-end, some code cleanup, see #23216

git-svn-id: http://core.svn.wordpress.org/trunk@23882 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Andrew Ozz 2013-03-30 23:32:12 +00:00
parent bdc3e9bdb9
commit 651534f24e
2 changed files with 83 additions and 53 deletions

View File

@ -2333,6 +2333,9 @@ function __checked_selected_helper( $helper, $current, $echo, $type ) {
* @return array $settings
*/
function wp_heartbeat_settings( $settings ) {
if ( ! is_admin() )
$settings['ajaxurl'] = admin_url( 'admin-ajax.php', 'relative' );
if ( is_user_logged_in() )
$settings['nonce'] = wp_create_nonce( 'heartbeat-nonce' );

View File

@ -12,13 +12,14 @@ window.wp = window.wp || {};
beat,
nonce,
screenid = typeof pagenow != 'undefined' ? pagenow : '',
url = typeof ajaxurl != 'undefined' ? ajaxurl : '',
settings,
tick = 0,
queue = {},
interval,
lastconnect = 0,
connecting,
countdown,
countdown = 0,
errorcount = 0,
tempInterval,
hasFocus = true,
isUserActive,
@ -26,17 +27,19 @@ window.wp = window.wp || {};
winBlurTimeout,
frameBlurTimeout = -1;
this.url = typeof ajaxurl != 'undefined' ? ajaxurl : 'wp-admin/admin-ajax.php';
this.autostart = true;
this.connectionLost = false;
if ( typeof( window.heartbeatSettings != 'undefined' ) ) {
settings = $.extend( {}, window.heartbeatSettings );
window.heartbeatSettings = null;
settings = window.heartbeatSettings;
// Add private vars
nonce = settings.nonce || '';
delete settings.nonce;
url = settings.ajaxurl || url;
delete settings.ajaxurl;
interval = settings.interval || 15; // default interval
delete settings.interval;
// The interval can be from 5 to 60 sec.
@ -47,7 +50,6 @@ window.wp = window.wp || {};
interval = interval * 1000;
// todo: needed?
// 'screenid' can be added from settings on the front-end where the JS global 'pagenow' is not set
screenid = screenid || settings.screenid || 'site';
delete settings.screenid;
@ -72,21 +74,39 @@ window.wp = window.wp || {};
return false;
}
// Set error state and fire an event if errors persist for over 2 min when the window has focus
// or 6 min when the window is in the background
function errorstate() {
var since;
// Set error state and fire an event if XHR errors or timeout
function errorstate( error ) {
var trigger;
if ( lastconnect ) {
since = time() - lastconnect, duration = hasFocus ? 120000 : 360000;
if ( error ) {
switch ( error ) {
case 'abort':
// do nothing
break;
case 'timeout':
// no response for 30 sec.
trigger = true;
break;
case 'parsererror':
case 'error':
case 'empty':
case 'unknown':
errorcount++;
if ( since > duration ) {
self.connectionLost = true;
$(document).trigger( 'heartbeat-connection-lost', parseInt(since / 1000) );
} else if ( self.connectionLost ) {
self.connectionLost = false;
$(document).trigger( 'heartbeat-connection-restored' );
if ( errorcount > 2 )
trigger = true;
break;
}
if ( trigger && ! self.connectionLost ) {
self.connectionLost = true;
$(document).trigger( 'heartbeat-connection-lost' );
}
} else if ( self.connectionLost ) {
errorcount = 0;
self.connectionLost = false;
$(document).trigger( 'heartbeat-connection-restored' );
}
}
@ -95,6 +115,9 @@ window.wp = window.wp || {};
tick = time();
data.data = $.extend( {}, queue );
// Clear the data queue, anything added after this point will be send on the next tick
queue = {};
$(document).trigger( 'heartbeat-send', [data.data] );
data.interval = interval / 1000;
@ -104,32 +127,36 @@ window.wp = window.wp || {};
data.has_focus = hasFocus;
connecting = true;
self.xhr = $.post( self.url, data, 'json' )
.done( function( data, textStatus, jqXHR ) {
var interval;
self.xhr = $.ajax({
url: url,
type: 'post',
timeout: 30000, // throw an error of not completed after 30 sec.
data: data,
dataType: 'json'
}).done( function( data, textStatus, jqXHR ) {
var new_interval, timed;
// Clear the data queue
queue = {};
if ( ! data )
return errorstate( 'empty' );
// Clear error state
lastconnect = time();
if ( self.connectionLost )
errorstate();
// Change the interval from PHP
interval = data.heartbeat_interval;
new_interval = data.heartbeat_interval;
delete data.heartbeat_interval;
self.tick( data, textStatus, jqXHR );
// do this last, can trigger the next XHR
if ( interval )
self.interval.apply( self, data.heartbeat_interval );
}).always( function(){
// do this last, can trigger the next XHR if connection time > 5 sec. and new_interval == 'fast'
if ( new_interval )
self.interval.call( self, new_interval );
}).always( function() {
connecting = false;
next();
}).fail( function( jqXHR, textStatus, error ){
errorstate();
}).fail( function( jqXHR, textStatus, error ) {
errorstate( textStatus || 'unknown' );
self.error( jqXHR, textStatus, error );
});
};
@ -142,7 +169,7 @@ window.wp = window.wp || {};
if ( !hasFocus ) {
t = 120000; // 2 min
} else if ( countdown && tempInterval ) {
} else if ( countdown > 0 && tempInterval ) {
t = tempInterval;
countdown--;
}
@ -214,10 +241,10 @@ window.wp = window.wp || {};
});
}
$(window).on('blur.wp-heartbeat-focus', function(e){
$(window).on('blur.wp-heartbeat-focus', function(e) {
setFrameEvents();
winBlurTimeout = window.setTimeout( function(){ blurred(); }, 500 );
}).on('focus.wp-heartbeat-focus', function(){
}).on('focus.wp-heartbeat-focus', function() {
$('iframe').each( function(i, frame){
if ( !isLocalFrame(frame) )
return;
@ -261,12 +288,14 @@ window.wp = window.wp || {};
if ( !userActiveEvents ) {
$(document).on('mouseover.wp-heartbeat-active keyup.wp-heartbeat-active', function(){ userIsActive(); });
$('iframe').each( function(i, frame){
if ( !isLocalFrame(frame) )
return;
$(frame.contentWindow).on('mouseover.wp-heartbeat-active keyup.wp-heartbeat-active', function(){ userIsActive(); });
});
userActiveEvents = true;
}
}
@ -283,33 +312,31 @@ window.wp = window.wp || {};
});
}
this.winHasFocus = function() {
this.hasFocus = function() {
return hasFocus;
}
/**
* Get/Set the interval
*
* When setting the interval to 'fast', the number of ticks is specified wiht the second argument, default 30.
* If the window doesn't have focus, the interval is overridden to 2 min. In this case setting the 'ticks'
* will start counting after the window gets focus.
* When setting to 'fast', the interval is 5 sec. for the next 30 ticks (for 2 min and 30 sec).
* If the window doesn't have focus, the interval slows down to 2 min.
*
* @param string speed Interval speed: 'fast' (5sec), 'standard' (15sec) default, 'slow' (60sec)
* @param int ticks Number of ticks for the changed interval, optional when setting 'standard' or 'slow'
* @return int Current interval in seconds
*/
this.interval = function(speed, ticks) {
this.interval = function( speed ) {
var reset, seconds;
if ( speed ) {
switch ( speed ) {
case 'fast':
seconds = 5;
countdown = parseInt(ticks) || 30;
countdown = 30;
break;
case 'slow':
seconds = 60;
countdown = parseInt(ticks) || 0;
countdown = 0;
break;
case 'long-polling':
// Allow long polling, (experimental)
@ -324,7 +351,7 @@ window.wp = window.wp || {};
// Reset when the new interval value is lower than the current one
reset = seconds * 1000 < interval;
if ( countdown ) {
if ( countdown > 0 ) {
tempInterval = seconds * 1000;
} else {
interval = seconds * 1000;
@ -361,7 +388,7 @@ window.wp = window.wp || {};
}
/**
* Send data with the next XHR
* Enqueue data to send with the next XHR
*
* As the data is sent later, this function doesn't return the XHR response.
* To see the response, use the custom jQuery event 'heartbeat-tick' on the document, example:
@ -371,14 +398,14 @@ window.wp = window.wp || {};
* If the same 'handle' is used more than once, the data is overwritten when the third argument is 'true'.
* Use wp.heartbeat.isQueued('handle') to see if any data is already queued for that handle.
*
* $param string handle Unique handle for the data. The handle is used in PHP to receive the data
* $param mixed data The data to be sent
* $param bool overwrite Whether to overwrite existing data in the queue
* $return bool Whether the data was queued or not
* $param string handle Unique handle for the data. The handle is used in PHP to receive the data.
* $param mixed data The data to send.
* $param bool dont_overwrite Whether to overwrite existing data in the queue.
* $return bool Whether the data was queued or not.
*/
this.send = function(handle, data, overwrite) {
this.enqueue = function( handle, data, dont_overwrite ) {
if ( handle ) {
if ( queue.hasOwnProperty(handle) && !overwrite )
if ( queue.hasOwnProperty(handle) && dont_overwrite )
return false;
queue[handle] = data;
@ -393,16 +420,16 @@ window.wp = window.wp || {};
* $param string handle The handle for the data
* $return mixed The data queued with that handle or null
*/
this.isQueued = function(handle) {
this.isQueued = function( handle ) {
return queue[handle];
}
}
$.extend( Heartbeat.prototype, {
tick: function(data, textStatus, jqXHR) {
tick: function( data, textStatus, jqXHR ) {
$(document).trigger( 'heartbeat-tick', [data, textStatus, jqXHR] );
},
error: function(jqXHR, textStatus, error) {
error: function( jqXHR, textStatus, error ) {
$(document).trigger( 'heartbeat-error', [jqXHR, textStatus, error] );
}
});