timer and threshold working, background time to not though

greasemonkey/virtualblinders.user.js

@@ -6,9 +6,12 @@
 // ==/UserScript==
 
 /* TODO
-
+# handle background tab
+## stop timer when focus lost window.onunload or window.onblur
+## restart timer when focus is back window.load or window.onfocus
+## XXX failing so far
 # improve the list of websites to include
-## consider include * then refine pattern per task
+## consider include * then refine window.location pattern per task
 # make timers (default to 0 sec, value defined via the script or a GM_Value) to be more flexible
 ## reset timer either manually or per day (i.e.) reset if last set date <5AM
 ## set 2 thresholds, the first as a warning, the second as an action
@@ -26,17 +29,65 @@ GM_xmlhttpRequest({
   url: "http://fabien.benetou.fr/pub/currenttask",
   onload: function(response) {
     task = response.responseText;
-    if (task == 'Reading\n' || task == 'Programming\n'){
+    responseCheck(task);
-	//document.body.innerHTML="You should be focusing on <a href=\"http://fabien.benetou.fr/CognitiveEnvironments/" + task + "\">"+task+"</a> instead,\nare you sure you need that information from that website?";
-	document.body.innerHTML="You should be focusing on <a href=\"http://fabien.benetou.fr/CognitiveEnvironments/" + task + "\">"+task+"</a> instead,\nare you sure you need that information from that website? <br/>Note that you have already spent <span id='timespent'>"+time_spent+"</span> seconds on that website so far!<hr/>"+document.body.innerHTML;
-	t=setInterval(mytimer,1000);
-	//see http://commons.oreilly.com/wiki/index.php/Greasemonkey_Hacks/Getting_Started#Pitfall_.231:_Auto-eval_Strings
     }
-  }
 });
 
-function mytimer(){
+function responseCheck(task) {
+	//task = 'Reading\n';
+	timeThreshold = 600;
+	aboveThreshold = ( timeThreshold < time_spent );
+	//aboveThreshold = true;
+	if (task == 'Reading\n' || task == 'Programming\n'){
+		if ( !aboveThreshold ) {
+			//under threshold, just display a warning and the content
+			document.body.innerHTML="You should be focusing on <a href=\"http://fabien.benetou.fr/CognitiveEnvironments/"
+				+ task + "\">"
+				+ task + "</a> instead,\nare you sure you need that information from that website?"
+				+ "<br/>Note that you have already spent <span id='timespent'>"
+				+ time_spent + "</span> seconds on that website so far!"
+				+ "(which still is under the threshold of "+timeThreshold+" seconds)<hr/>"
+				+document.body.innerHTML;
+			t=window.setInterval(mytimer,1000);
+			//regarding the specific syntax
+			//see http://commons.oreilly.com/wiki/index.php/Greasemonkey_Hacks/Getting_Started#Pitfall_.231:_Auto-eval_Strings
+			GM_log("register listeners");
+			window.addEventListener("onblur", stopTimer, true);
+			window.addEventListener("onfocus", restartTimer, true);
+			window.addEventListener("onunload", setTotalTimeSpent, true);
+		} else {
+			//above threshold, only display the warning without the content
+			document.body.innerHTML="You should be focusing on <a href=\"http://fabien.benetou.fr/CognitiveEnvironments/"
+				+ task + "\">"
+				+ task + "</a> instead,\nare you sure you need that information from that website?"
+				+ "<br/>Note that you have already spent <span id='timespent'>"
+				+ time_spent + "</span> seconds on that website so far!<br/>"
+				+ "(which is above the allowed threshold of "+timeThreshold+" seconds)<hr/>";
+		}
+	}
+}
+
+function mytimer() {
+	//GM_log("timer tick");
 	time_spent=time_spent+1;
-	document.getElementById('timespent').innerText=time_spent;
+	//fail document.getElementById('timespent').innerText=time_spent;
+	GM_setValue(MODE,time_spent);
+	// this should only be un setTotalTimeSpent() but since the events do not work this will remain here for now
+}
+
+function stopTimer() {
+	GM_log("stop timer");
+	// never called!
+	window.clearInterval(t);
+	// tested and worked, t value is correct
+}
+
+function restartTimer() {
+	GM_log("restart timer");
+	t=window.setInterval(mytimer,1000);
+}
+
+function setTotalTimeSpent() {
+	GM_log("set total time spent");
 	GM_setValue(MODE,time_spent);
 }