MDL-20179 Replaced incompatible code with something cross-browser com…

…patible. Merged from MOODLE_19_STABLE

grade/report/grader/grader.js

@@ -0,0 +1,145 @@
+YAHOO.namespace("graderreport");
+
+YAHOO.graderreport.init = function() {
+    // Adjust height of header c0
+    var rows = YAHOO.util.Dom.getElementsByClassName('heading_name_row');
+    var header_cell_region = YAHOO.util.Dom.getRegion();
+    var height = header_cell_region.bottom - header_cell_region.top;
+    YAHOO.util.Dom.setStyle('studentheader', 'height', height + 'px');
+
+    // attach event listener to the table for mouseover and mouseout
+    var table = document.getElementById('user-grades');
+    YAHOO.util.Event.on(table, 'mouseover', YAHOO.graderreport.mouseoverHandler);
+    YAHOO.util.Event.on(table, 'mouseout', YAHOO.graderreport.mouseoutHandler);
+
+    // Make single panel that can be dynamically re-rendered wit the right data.
+    YAHOO.graderreport.panelEl = new YAHOO.widget.Panel("tooltipPanel", {
+
+        draggable: false,
+        visible: false,
+        close: false,
+        preventcontextoverlap: true,
+        underlay: 'none'
+    });
+
+    YAHOO.graderreport.panelEl.render(table);
+
+};
+
+YAHOO.graderreport.mouseoverHandler = function (e) {
+
+    var tempNode = '';
+    var searchString = '';
+    var tooltipNode = '';
+
+    // get the element that we just moved the mouse over
+    var elTarget = YAHOO.util.Event.getTarget(e);
+
+
+    // if it was part of the yui panel, we don't want to redraw yet
+    searchString = /fullname|itemname|feedback/;
+    if (elTarget.className.search(searchString) > -1) {
+        return false;
+    }
+
+    // move up until we are in the actual cell, not any other child div or span
+    while (elTarget.id != 'user-grades') {
+        if(elTarget.nodeName.toUpperCase() == "TD") {
+            break;
+        } else {
+            elTarget = elTarget.parentNode;
+        }
+    }
+
+    // only make a tooltip for cells with grades
+    if (elTarget.className.search('grade cell') > -1) {
+
+        // each time we go over a new cell, we need to put it's tooltip into a div to stop it from
+        // popping up on top of the panel.
+
+        // don't do anything if we have already made the tooltip div
+        var makeTooltip = true
+        for (var k=0; k < elTarget.childNodes.length; k++) {
+            if (typeof(elTarget.childNodes[k].className) != 'undefined') {
+                if (elTarget.childNodes[k].className.search('tooltipDiv') > -1) {
+                    makeTooltip =  false;
+                }
+            }
+        }
+
+        // if need to, make the tooltip div and append it to the cell
+        if (makeTooltip) {
+
+            tempNode = document.createElement("div");
+            tempNode.className = "tooltipDiv";
+            tempNode.innerHTML = elTarget.title;
+            elTarget.appendChild(tempNode);
+            elTarget.title = null;
+        }
+
+        // Get the tooltip div
+        elChildren = elTarget.childNodes;
+        for (var m=0; m < elChildren.length; m++) {
+            if (typeof(elChildren[m].className) != 'undefined') {
+                if (elChildren[m].className.search('tooltipDiv') > -1) {
+                    tooltipNode = elChildren[m];
+                    break;
+                }
+            }
+        }
+        //build and show the tooltip
+        YAHOO.graderreport.panelEl.setBody(tooltipNode.innerHTML);
+        YAHOO.graderreport.panelEl.render(elTarget);
+        YAHOO.graderreport.panelEl.show()
+    }
+};
+
+// only hide the overlay if the mouse has not moved over it
+YAHOO.graderreport.mouseoutHandler = function (e) {
+
+    var classVar = '';
+    var searchString = '';
+    var newTargetClass = '';
+    var newTarget = YAHOO.util.Event.getRelatedTarget(e);
+
+    // deals with an error if the mouseout event is over the lower scrollbar
+    try {
+        classVar = newTarget.className;
+    } catch (err) {
+        YAHOO.graderreport.panelEl.hide()
+        return false;
+    }
+
+    // if we are over any part of the panel, do not hide
+    // do this by walking up the DOM till we reach table level, looking for panel tag
+    while ((typeof(newTarget.id) == 'undefined') || (newTarget.id != 'user-grades')) {
+
+        try {
+            newTargetClass = newTarget.className;
+        } catch (err) {
+            // we've gone over the scrollbar again
+            YAHOO.graderreport.panelEl.hide()
+            return false;
+        }
+        searchString = /yui-panel|grade cell/;
+        if (newTargetClass.search(searchString) > -1) {
+            // we're in the panel so don't hide it
+            return false;
+        }
+
+        if (newTarget.nodeName.toUpperCase() == "HTML") {
+            // we missed the user-grades table altogether by moving down off screen to read a long one
+            YAHOO.graderreport.panelEl.hide()
+            break;
+        }
+
+        newTarget = newTarget.parentNode;
+    }
+
+    // no panel so far and we went up to the
+    YAHOO.graderreport.panelEl.hide()
+
+};
+
+
+YAHOO.util.Event.onDOMReady(YAHOO.graderreport.init);