diff options
Diffstat (limited to 'webapps/qooxdoo-0.6.5-sdk/frontend/framework/source/class/qx/io/remote/RequestQueue.js')
-rw-r--r-- | webapps/qooxdoo-0.6.5-sdk/frontend/framework/source/class/qx/io/remote/RequestQueue.js | 409 |
1 files changed, 0 insertions, 409 deletions
diff --git a/webapps/qooxdoo-0.6.5-sdk/frontend/framework/source/class/qx/io/remote/RequestQueue.js b/webapps/qooxdoo-0.6.5-sdk/frontend/framework/source/class/qx/io/remote/RequestQueue.js deleted file mode 100644 index 9cf8dac297..0000000000 --- a/webapps/qooxdoo-0.6.5-sdk/frontend/framework/source/class/qx/io/remote/RequestQueue.js +++ /dev/null @@ -1,409 +0,0 @@ -/* ************************************************************************ - - qooxdoo - the new era of web development - - http://qooxdoo.org - - Copyright: - 2004-2007 1&1 Internet AG, Germany, http://www.1and1.org - 2006 Derrell Lipman - - License: - LGPL: http://www.gnu.org/licenses/lgpl.html - EPL: http://www.eclipse.org/org/documents/epl-v10.php - See the LICENSE file in the project's top-level directory for details. - - Authors: - * Sebastian Werner (wpbasti) - * Andreas Ecker (ecker) - * Derrell Lipman (derrell) - -************************************************************************ */ - -/* ************************************************************************ - -#module(io_remote) - -************************************************************************ */ - -/** - * Handles scheduling of requests to be sent to a server. - * - * This class is a singleton and is used by qx.io.remote.Request to schedule its - * requests. It should not be used directly. - */ -qx.OO.defineClass("qx.io.remote.RequestQueue", qx.core.Target, -function() -{ - qx.core.Target.call(this); - - this._queue = []; - this._active = []; - - this._totalRequests = 0; - - // timeout handling - this._timer = new qx.client.Timer(500); - this._timer.addEventListener("interval", this._oninterval, this); -}); - - - - -/* ---------------------------------------------------------------------------- - PROPERTIES ---------------------------------------------------------------------------- -*/ - -/** - * @deprecated - */ -qx.OO.addProperty({ name : "maxTotalRequests", type : "number" }); - -/** - * Maximum number of parallel requests. - */ -qx.OO.addProperty({ name : "maxConcurrentRequests", type : "number", defaultValue : 3 }); - -/** - * Default timeout for remote requests in milliseconds. - */ -qx.OO.addProperty({ name : "defaultTimeout", type : "number", defaultValue : 5000 }); - - - - - - -/* ---------------------------------------------------------------------------- - QUEUE HANDLING ---------------------------------------------------------------------------- -*/ - -qx.Proto._debug = function() -{ - // Debug output - var vText = this._active.length + "/" + (this._queue.length+this._active.length); - - if (qx.Settings.getValueOfClass("qx.io.remote.Exchange", "enableDebug")) - { - this.debug("Progress: " + vText); - window.status = "Request-Queue Progress: " + vText; - } -} - -qx.Proto._check = function() -{ - // Debug output - this._debug(); - - // Check queues and stop timer if not needed anymore - if (this._active.length == 0 && this._queue.length == 0) { - this._timer.stop(); - } - - // Checking if enabled - if (!this.getEnabled()) { - return; - } - - // Checking active queue fill - if (this._active.length >= this.getMaxConcurrentRequests() || this._queue.length == 0) { - return; - } - - // Checking number of total requests - if (this.getMaxTotalRequests() != null && this._totalRequests >= this.getMaxTotalRequests()) { - return; - } - - var vRequest = this._queue.shift(); - var vTransport = new qx.io.remote.Exchange(vRequest); - - // Increment counter - this._totalRequests++; - - // Add to active queue - this._active.push(vTransport); - - // Debug output - this._debug(); - - // Establish event connection between qx.io.remote.Exchange instance and qx.io.remote.Request - vTransport.addEventListener("sending", vRequest._onsending, vRequest); - vTransport.addEventListener("receiving", vRequest._onreceiving, vRequest); - vTransport.addEventListener("completed", vRequest._oncompleted, vRequest); - vTransport.addEventListener("aborted", vRequest._onaborted, vRequest); - vTransport.addEventListener("timeout", vRequest._ontimeout, vRequest); - vTransport.addEventListener("failed", vRequest._onfailed, vRequest); - - // Establish event connection between qx.io.remote.Exchange and me. - vTransport.addEventListener("sending", this._onsending, this); - vTransport.addEventListener("completed", this._oncompleted, this); - vTransport.addEventListener("aborted", this._oncompleted, this); - vTransport.addEventListener("timeout", this._oncompleted, this); - vTransport.addEventListener("failed", this._oncompleted, this); - - // Store send timestamp - vTransport._start = (new Date).valueOf(); - - // Send - vTransport.send(); - - // Retry - if (this._queue.length > 0) { - this._check(); - } -} - -qx.Proto._remove = function(vTransport) -{ - var vRequest = vTransport.getRequest(); - - // Destruct event connection between qx.io.remote.Exchange instance and qx.io.remote.Request - vTransport.removeEventListener("sending", vRequest._onsending, vRequest); - vTransport.removeEventListener("receiving", vRequest._onreceiving, vRequest); - vTransport.removeEventListener("completed", vRequest._oncompleted, vRequest); - vTransport.removeEventListener("aborted", vRequest._onaborted, vRequest); - vTransport.removeEventListener("timeout", vRequest._ontimeout, vRequest); - vTransport.removeEventListener("failed", vRequest._onfailed, vRequest); - - // Destruct event connection between qx.io.remote.Exchange and me. - vTransport.removeEventListener("sending", this._onsending, this); - vTransport.removeEventListener("completed", this._oncompleted, this); - vTransport.removeEventListener("aborted", this._oncompleted, this); - vTransport.removeEventListener("timeout", this._oncompleted, this); - vTransport.removeEventListener("failed", this._oncompleted, this); - - // Remove from active transports - qx.lang.Array.remove(this._active, vTransport); - - // Dispose transport object - vTransport.dispose(); - - // Check again - this._check(); -} - - - - - - - -/* ---------------------------------------------------------------------------- - EVENT HANDLING ---------------------------------------------------------------------------- -*/ - -qx.Proto._activeCount = 0; - -qx.Proto._onsending = function(e) -{ - if (qx.Settings.getValueOfClass("qx.io.remote.Exchange", "enableDebug")) - { - this._activeCount++; - e.getTarget()._counted = true; - - this.debug("ActiveCount: " + this._activeCount); - } -} - -qx.Proto._oncompleted = function(e) -{ - if (qx.Settings.getValueOfClass("qx.io.remote.Exchange", "enableDebug")) - { - if (e.getTarget()._counted) - { - this._activeCount--; - this.debug("ActiveCount: " + this._activeCount); - } - } - - this._remove(e.getTarget()); -} - - - - - - - -/* ---------------------------------------------------------------------------- - TIMEOUT HANDLING ---------------------------------------------------------------------------- -*/ - -qx.Proto._oninterval = function(e) -{ - var vActive = this._active; - - if (vActive.length == 0) { - return; - } - - var vCurrent = (new Date).valueOf(); - var vTransport; - var vRequest; - var vDefaultTimeout = this.getDefaultTimeout(); - var vTimeout; - var vTime; - - for (var i=vActive.length-1; i>=0; i--) - { - vTransport = vActive[i]; - vRequest = vTransport.getRequest(); - if (vRequest.isAsynchronous()) { - vTimeout = vRequest.getTimeout(); - - // if timer is disabled... - if (vTimeout == 0) { - // then ignore it. - continue; - } - - if (vTimeout == null) { - vTimeout = vDefaultTimeout; - } - - vTime = vCurrent - vTransport._start; - - if (vTime > vTimeout) - { - this.warn("Timeout: transport " + vTransport.toHashCode()); - this.warn(vTime + "ms > " + vTimeout + "ms"); - vTransport.timeout(); - } - } - } -} - - - - -/* ---------------------------------------------------------------------------- - MODIFIERS ---------------------------------------------------------------------------- -*/ - -qx.Proto._modifyEnabled = function(propValue, propOldValue, propData) -{ - if (propValue) { - this._check(); - } - - this._timer.setEnabled(propValue); - - return true; -} - - - - - - - -/* ---------------------------------------------------------------------------- - CORE METHODS ---------------------------------------------------------------------------- -*/ -/*! - Add the request to the pending requests queue. -*/ -qx.Proto.add = function(vRequest) -{ - vRequest.setState("queued"); - - this._queue.push(vRequest); - this._check(); - - if (this.getEnabled()) { - this._timer.start(); - } -} - -/*! - Remove the request from the pending requests queue. - - The underlying transport of the request is forced into the aborted - state ("aborted") and listeners of the "aborted" - signal are notified about the event. If the request isn't in the - pending requests queue, this method is a noop. -*/ -qx.Proto.abort = function(vRequest) -{ - var vTransport = vRequest.getTransport(); - - if (vTransport) - { - vTransport.abort(); - } - else if (qx.lang.Array.contains(this._queue, vRequest)) - { - qx.lang.Array.remove(this._queue, vRequest); - } -} - - - - - - - -/* ---------------------------------------------------------------------------- - DISPOSER ---------------------------------------------------------------------------- -*/ - -/** - * Disposer - */ -qx.Proto.dispose = function() -{ - if (this.getDisposed()) { - return true; - } - - if (this._active) - { - for (var i=0, a=this._active, l=a.length; i<l; i++) { - this._remove(a[i]); - } - - this._active = null; - } - - if (this._timer) - { - this._timer.removeEventListener("interval", this._oninterval, this); - this._timer = null; - } - - this._queue = null; - - return qx.core.Target.prototype.dispose.call(this); -} - - - - - - - -/* ---------------------------------------------------------------------------- - DEFER SINGLETON INSTANCE ---------------------------------------------------------------------------- -*/ - -/** - * Singleton Instance Getter - */ -qx.Class.getInstance = qx.lang.Function.returnInstance; |