From a0c72e1a50c1164bad7f1d9c66fb4af906e0a52a Mon Sep 17 00:00:00 2001
From: Timotej Lazar <timotej.lazar@fri.uni-lj.si>
Date: Mon, 27 Feb 2017 18:38:25 +0100
Subject: Report hints both when offered and viewed

---
 js/codeq/hint.js | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/js/codeq/hint.js b/js/codeq/hint.js
index 0242443..0c4b2f2 100644
--- a/js/codeq/hint.js
+++ b/js/codeq/hint.js
@@ -332,7 +332,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>. */
                 var finalizers = [],
                     i, hint, hintDef, hintContent, hintType, t, fn, ret;
 
-                activityHandler.queueTrace({'typ': 'hint', 'feedback': hints});
+		activityHandler.queueTrace({'typ': 'hint', 'feedback': hints, 'shown': true});
                 for (i = 0; i < hints.length; i++) {
                     hint = hints[i];
                     hintDef = hintProblemDefs[hint.id] || hintCommonDefs[hint.id];
@@ -406,7 +406,8 @@ along with this program. If not, see <http://www.gnu.org/licenses/>. */
                 var i, hint, hintDef, hintContent,
                     n_correct = 0, n_all = 0,
                     jqHintBox = $('<div class="feedback"></div>'),
-                    jqHintBtn;
+                    jqHintBtn,
+		    fn;
 
                 // display the test_results hint first if found
                 for (i = 0; i < hints.length; i++) {
@@ -430,18 +431,22 @@ along with this program. If not, see <http://www.gnu.org/licenses/>. */
                     }
                     else {
                         // otherwise, hide hints behind a button
+                        activityHandler.queueTrace({'typ': 'hint', 'feedback': hints, 'shown': false});
                         jqHintBtn = $('<button class="display-hints" data-tkey="btn_hint">Hint</button>');
                         codeq.tr.translateDom(jqHintBtn);
                         jqHintBtn.on('click', function (e) {
                             jqHintBtn.off().remove();
                             appendHints(hints, jqHintBox);
-
                         });
-                        jqHintBox.append(jqHintBtn);
 
-                        // experiment: Prolog hints
-                        activityHandler.queueTrace({'typ': 'experiment', 'data': 'hint button shown'});
-                        // end of experiment: Prolog hints
+			// hide the hint button if code changes
+			fn = function (instance, changeObj) {
+			    jqHintBtn.off().remove();
+			    editor.off('change', fn);
+			};
+			editor.on('change', fn);
+
+                        jqHintBox.append(jqHintBtn);
                     }
                 }
                 jqHints.prepend(jqHintBox);
-- 
cgit v1.2.1