--- /dev/null
+var renderTargetsReqVar;\r
+var renderOnRecordTargetsReqVar;\r
+\r
+// Renders UI elements listed in 'renderWhileActiveclients', optionally doing\r
+// another update round-trip to Pazpar2 when done.\r
+function renderTargets(doRefresh) {\r
+ // console.log('rendering ' + renderWhileActiveclients);\r
+ var sourcecomp = document.getElementById("pz2watch:activeclientsField");\r
+ jsf.ajax.request(sourcecomp, null, {\r
+ render : renderWhileActiveclients\r
+ });\r
+ if (doRefresh) {\r
+ // console.log('Will do another ajax request after a timeout in order to\r
+ // render: pz2watch:activeclientsField');\r
+ renderTargetsReqVar = setTimeout(function() {\r
+ // console.log('Making request for pz2watch:activeclientsField');\r
+ jsf.ajax.request(sourcecomp, null, {\r
+ render : "pz2watch:activeclientsField"\r
+ });\r
+ }, 500);\r
+ } else {\r
+ // console.log("No further updates from server requested");\r
+ }\r
+}\r
+\r
+// Renders UI elements listed in 'renderWhileActiveclientsRecord', optionally\r
+// doing\r
+// another record request when done.\r
+function renderOnRecordTargets(doRefresh) {\r
+ // console.log('rendering ' + renderWhileActiveclientsRecord);\r
+ var sourcecomp = document.getElementById("pz2watch:activeclientsFieldRecord");\r
+ jsf.ajax.request(sourcecomp, null, {\r
+ render : renderWhileActiveclientsRecord\r
+ });\r
+ if (doRefresh) {\r
+ // console.log('Will do another ajax request after a timeout in order to\r
+ // render: pz2watch:activeclientsFieldRecord');\r
+ renderOnRecordTargetsReqVar = setTimeout(function() {\r
+ // console.log('Making request for pz2watch:activeclientsFieldRecord');\r
+ jsf.ajax.request(sourcecomp, null, {\r
+ render : "pz2watch:activeclientsFieldRecord"\r
+ });\r
+ }, 1000);\r
+ } else {\r
+ // console.log("No further updates from server requested");\r
+ }\r
+}\r
+\r
+// Listens for browser initiated changes to 'window.location.hash' and sends \r
+// the hash key changes to the back-end, to have the back-end pull up a previous \r
+// Pazpar2 state.\r
+// \r
+// See also: The field in pz2watch.xhtml, the StateListener function below,\r
+// the method Pz2Bean.handleQueryStateChanges(), and the classes \r
+// Pazpar2State and StateManager for a complete picture of browser history \r
+// handling.\r
+function windowlocationhashListener() {\r
+ if (trackHistory) {\r
+ \r
+ var stateKey = document.getElementById("pz2watch:windowlocationhash");\r
+ // console.log("browser hash update response detected.");\r
+ // console.log("pz2watch:windowlocationhash: [" + stateKey.value + "]");\r
+ // console.log("window.location.hash: [" + window.location.hash + "]");\r
+ if (window.location.hash != stateKey.value) { \r
+ if (window.location.hash) {\r
+ //console.log("updating pz2watch:windowlocationhash with new window.location.hash [" + window.location.hash + "]");\r
+ stateKey.value = window.location.hash;\r
+ //console.log("firing pz2watch:windowlocationhash onChange");\r
+ stateKey.onchange();\r
+ } else if (stateKey.value) {\r
+ //console.log("updating window.location.hash with pz2watch:windowlocationhash [" + stateKey.value + "]");\r
+ window.location.hash = stateKey.value;\r
+ //console.log("firing pz2watch:windowlocationhash onChange");\r
+ stateKey.onchange();\r
+ } \r
+ } else {\r
+ //console.log("State hash already has the value of the new browser hash - not updating state hash");\r
+ }\r
+ }\r
+}\r
+\r
+// Listens for ViewExpiredException message. Reloads the current page, stripped\r
+// of\r
+// it's jsessionid and hash content\r
+function viewExpirationListener(data) {\r
+ if (data.status === "success" && data.responseXML) {\r
+ var errorElements = data.responseXML.getElementsByTagName("error-name");\r
+ if (errorElements.length > 0) {\r
+ var errorname = errorElements.item(0).textContent\r
+ || errorElements.item(0).text;\r
+ if (errorname === "class javax.faces.application.ViewExpiredException") {\r
+ var newloc = window.location.protocol + "//" + window.location.host\r
+ + window.location.pathname.replace(/;jsessionid.*/, '');\r
+ alert('Sorry, this session has expired. A new one will be loaded.');\r
+ window.location.replace(newloc);\r
+ }\r
+ }\r
+ }\r
+\r
+}\r
+\r
+function errorListener(data) {\r
+ // alert(data.toSource());\r
+ if (data.source.name === "pz2watch:activeclientsField") {\r
+ alert("This occurred when polling: ["\r
+ + data.description\r
+ + "]. The page could be in an inconsistent state after this. We apologize for the inconvenience.");\r
+ } else {\r
+ var pattern = /viewId.*could not be restored./;\r
+ if (pattern.test(data.description)) {\r
+ // ignore - caught by view expiration listener\r
+ } else {\r
+ alert("An error ["\r
+ + data.errorName + ": " +data.description\r
+ + "] was triggered by ["\r
+ + data.source.name\r
+ + "]. The page could be in an inconsistent state after this. We apologize for the inconvenience.");\r
+ }\r
+ }\r
+}\r
+\r
+// Composite listener, invoking all field update listeners\r
+function fieldUpdateListener(data) {\r
+ if (data.status === "success") {\r
+ var updates = data.responseXML.getElementsByTagName("update");\r
+ for ( var i = 0, max = updates.length; i < max; i++) {\r
+ var lsnri = fieldListeners.getListener(updates[i].getAttribute("id"));\r
+ if (lsnri) {\r
+ lsnri.invoke(updates[i]);\r
+ }\r
+ }\r
+ }\r
+}\r
+\r
+var Pz2listeners = function() {\r
+ var lsnrs = {};\r
+ this.addListener = function(key, lsnr) {\r
+ lsnrs[key] = lsnr;\r
+ };\r
+ this.getListener = function(key) {\r
+ return lsnrs[key];\r
+ };\r
+};\r
+\r
+var fieldListeners = new Pz2listeners();\r
+\r
+// Listens for back-end initiated changes to the state key and updates\r
+// window.location.hash with changes, to record them in browsing history\r
+var StateListener = function() {\r
+ this.invoke = function(field) {\r
+ var stateKeyDoc = StringtoXML(field.textContent || field.text);\r
+ var stateKeyValue = stateKeyDoc.childNodes[0].getAttribute("value");\r
+ // console.log('Received state key update from the back-end: ' + stateKeyValue);\r
+ if (stateKeyValue !== window.location.hash) {\r
+ window.location.hash = stateKeyValue;\r
+ // console.log("Browsers hash (window.location.hash) updated with [" + stateKeyValue + "]");\r
+ } else {\r
+ // console.log("Browsers hash (window.location.hash) already has the value [" + stateKeyValue + "]");\r
+ }\r
+ };\r
+};\r
+\r
+// Listens for updates to general 'activeclients' field, then invokes\r
+// renderTargets\r
+var ActiveclientsListener = function() {\r
+ this.invoke = function(field) {\r
+ var updateDoc = StringtoXML(field.textContent || field.text);\r
+ var activeClientsValue = (updateDoc.childNodes[0].textContent || updateDoc.childNodes[0].text);\r
+ // console.log('Activeclients response detected: ' + activeClientsValue);\r
+ clearTimeout(renderTargetsReqVar);\r
+ if (activeClientsValue > '0') {\r
+ renderTargets(true);\r
+ } else {\r
+ renderTargets(false);\r
+ }\r
+ };\r
+};\r
+\r
+// Listens for updates to record 'activeclients' field, then invokes\r
+// renderOnRecordTargets\r
+var ActiveclientsRecordListener = function() {\r
+ this.invoke = function(field) {\r
+ var updateDoc = StringtoXML(field.textContent || field.text);\r
+ var activeClientsRecordValue = (updateDoc.childNodes[0].textContent || updateDoc.childNodes[0].text);\r
+ // console.log('Activeclients response for record detected: ' + activeClientsRecordValue);\r
+ clearTimeout(renderOnRecordTargetsReqVar);\r
+ if (activeClientsRecordValue > '0') {\r
+ renderOnRecordTargets(true);\r
+ } else {\r
+ // console.log('Active clients is 0, final rendering');\r
+ renderOnRecordTargets(false);\r
+ }\r
+ };\r
+};\r
+\r
+// Inserts field update listeners, state listeners, view expired listener\r
+// into Ajax response handling\r
+jsf.ajax.addOnEvent(fieldUpdateListener);\r
+jsf.ajax.addOnEvent(viewExpirationListener);\r
+jsf.ajax.addOnError(errorListener);\r
+\r
+function StringtoXML(text) {\r
+ var doc;\r
+ if (window.ActiveXObject) {\r
+ doc = new ActiveXObject('Microsoft.XMLDOM');\r
+ doc.async = false;\r
+ doc.loadXML(text);\r
+ } else {\r
+ var parser = new DOMParser();\r
+ doc = parser.parseFromString(text, 'text/xml');\r
+ }\r
+ return doc;\r
+}\r
+\r
+// Sets up field update listeners\r
+var setUpListeners = function() {\r
+ // console.log("Starts tracking activeclientsField, for 'show' and 'record'");\r
+ fieldListeners.addListener("pz2watch:activeclientsField",\r
+ new ActiveclientsListener());\r
+ fieldListeners.addListener("pz2watch:activeclientsFieldRecord",\r
+ new ActiveclientsRecordListener());\r
+ if (trackHistory) {\r
+ // console.log("Starts tracking windowlocationhash field");\r
+ fieldListeners.addListener("pz2watch:windowlocationhash",\r
+ new StateListener());\r
+ // console.log("Setting listener for browser onhashchange");\r
+ window.onload = window.onhashchange = windowlocationhashListener;\r
+ }\r
+};
\ No newline at end of file
projects / mkjsf-moved-to-github.git / blobdiff