Started to implement clear plugin metadata.

Right now it doesn't care what your answer to the dialog is, I need to
event handle or promise that.

resources/report/js/custom.js

@@ -47,6 +47,23 @@ var pluginMenuProto = Object.create(HTMLElement.prototype, {
                 loot.query(request).catch(processCefError);
             } else if (evt.target.id == 'clearMetadata') {
                 showMessageDialog('Clear Plugin Metadata', 'Are you sure you want to clear all existing user-added metadata from "' + pluginCard.querySelector('h1').textContent + '"?');
+
+                var request = JSON.stringify({
+                    name: 'clearPluginMetadata',
+                    args: [
+                        pluginCard.getElementsByTagName('h1')[0].textContent
+                    ]
+                });
+
+                loot.query(request).then(function(result){
+                    /* Need to also empty the UI-side user metadata. */
+                    for (var i = 0; i < loot.game.plugins.length; ++i) {
+                        if (loot.game.plugins[i].id == pluginID) {
+                            loot.game.plugins[i].userlist = undefined;
+                            break;
+                        }
+                    }
+                }).catch(processCefError);
             }
         }
     },

resources/report/js/plugin.js

@@ -323,20 +323,14 @@ function Plugin(obj) {
         document.getElementById('pluginsNav').appendChild(li);
     }
 
-    Plugin.prototype.changeAction = function(change) {
-        console.log(change);
-    }
-
     Plugin.prototype.observer = function(changes) {
-        //console.log(changes);
         changes.forEach(function(change) {
-        //for (var i = 0; i < changes.length; ++i) {
-
-            if (change.name == 'name') {
-                change.object.card.querySelector('h1').textContent = change.object[change.name];
+            console.log(change);
+            if (change.name == 'userlist') {
+                change.object.li.setAttribute('data-edits', change.object[change.name] != undefined);
+                change.object.card.setAttribute('data-edits', change.object[change.name] != undefined);
             }
         });
-        //changes.forEach(changeAction);
     }
 
     this.createCard();

src/gui/handler.cpp

@@ -260,6 +260,20 @@ namespace loot {
 #endif
                 return true;
             }
+            else if (requestName == "clearPluginMetadata") {
+                // Has one arg, which is the name of the plugin to copy metadata for.
+                const string pluginName = req["args"][0].as<string>();
+                BOOST_LOG_TRIVIAL(debug) << "Clearing user metadata for plugin " << pluginName;
+
+                auto pluginIt = find(g_app_state.CurrentGame().userlist.plugins.begin(), g_app_state.CurrentGame().userlist.plugins.end(), Plugin(pluginName));
+
+                if (pluginIt != g_app_state.CurrentGame().userlist.plugins.end()) {
+                    g_app_state.CurrentGame().userlist.plugins.erase(pluginIt);
+                }
+
+                callback->Success("");
+                return true;
+            }
         }
 
         return false;