Deprecate 'overrideSettings'

* Deprecate and log warning to console when 'overrideSettings' is used
 * Change confirmation dialog be 'fixed' e.g relative to viewport instead of
   and arbitrary relative parent element
 * Same for the overlay mask
 * Set minimum height on body element, to fit confirmation dialog
 * Remove the minimum height on close dialog

Fixes HFP-574

js/h5p-confirmation-dialog.js

@@ -315,7 +315,7 @@ H5P.ConfirmationDialog = (function (EventDispatcher) {
           if (resizeIFrame && options.instance) {
             var minHeight = parseInt(popup.offsetHeight, 10) +
               exitButtonOffset + (2 * shadowOffset);
-            wrapperElement.style.minHeight = minHeight + 'px';
+            self.setViewPortMinimumHeight(minHeight);
             options.instance.trigger('resize');
             resizeIFrame = false;
           }
@@ -340,10 +340,20 @@ H5P.ConfirmationDialog = (function (EventDispatcher) {
       setTimeout(function () {
         popupBackground.classList.add('hidden');
         wrapperElement.removeChild(popupBackground);
+        self.setViewPortMinimumHeight(null);
       }, 100);
 
       return this;
     };
+
+    /**
+     * Sets the minimum height of the view port
+     *
+     * @param {number|null} minHeight
+     */
+    this.setViewPortMinimumHeight = function(minHeight) {
+      document.body.style.minHeight = (typeof minHeight === 'number') ? (minHeight + 'px') : minHeight;
+    };
   }
 
   ConfirmationDialog.prototype = Object.create(EventDispatcher.prototype);

js/h5p.js

@@ -1000,24 +1000,13 @@ H5P.findCopyrights = function (info, parameters, contentId) {
       continue; // Do not check
     }
 
-    /*
-     * TODO: Make parameters clean again
-     * Some content types adds jQuery or other objects to parameters
-     * in order to determine override settings for sub-content-types.
-     * For instance Question Set tells Multiple Choice that it should
-     * attach Multi Choice's confirmation dialog to a Question Set
-     * jQuery element, so that the confirmation dialog will not be restricted
-     * to the space confined by Multi Choice.
-     * Ideally this should not be added to parameters, we must make a better
-     * solution. We should likely be adding these to sub-content through
-     * functions/setters instead of passing them down as params.
-     *
-     * This solution is implemented as a hack that will ignore all parameters
-     * inside a "overrideSettings" field, this should suffice for now since
-     * all overridden objects are added to this field, however this is not very
-     * robust solution and will very likely lead to problems in the future.
+    /**
+     * @deprecated This hack should be removed after 2017-11-01
+     * The code that was using this was removed by HFP-574
      */
     if (field === 'overrideSettings') {
+      console.warn("The semantics field 'overrideSettings' is DEPRECATED and should not be used.");
+      console.warn(parameters);
       continue;
     }
 

styles/h5p-confirmation-dialog.css

@@ -1,5 +1,5 @@
 .h5p-confirmation-dialog-background {
-  position: absolute;
+  position: fixed;
   height: 100%;
   width: 100%;
   left: 0;
@@ -30,7 +30,7 @@
 }
 
 .h5p-confirmation-dialog-popup {
-  position: absolute;
+  position: fixed;
   display: flex;
   flex-direction: column;
   justify-content: center;