frontend-tools: Add defaults button to script dialog

UI/frontend-plugins/frontend-tools/forms/scripts.ui

@@ -136,6 +136,13 @@
              </property>
             </spacer>
            </item>
+           <item>
+            <widget class="QPushButton" name="defaults">
+             <property name="text">
+              <string>Defaults</string>
+             </property>
+            </widget>
+           </item>
            <item>
             <widget class="QPushButton" name="scriptLog">
              <property name="text">

UI/frontend-plugins/frontend-tools/scripts.cpp

@@ -255,6 +255,22 @@ void ScriptsTool::RefreshLists()
 	}
 }
 
+void ScriptsTool::SetScriptDefaults(const char *path)
+{
+	for (OBSScript &script : scriptData->scripts) {
+		const char *script_path = obs_script_get_path(script);
+		if (strcmp(script_path, path) == 0) {
+			obs_data_t *settings = obs_script_get_settings(script);
+			obs_data_clear(settings);
+			obs_data_release(settings);
+
+			obs_script_update(script, nullptr);
+			on_reloadScripts_clicked();
+			break;
+		}
+	}
+}
+
 void ScriptsTool::on_close_clicked()
 {
 	close();
@@ -433,6 +449,16 @@ void ScriptsTool::on_scripts_currentRowChanged(int row)
 	ui->description->setText(obs_script_get_description(script));
 }
 
+void ScriptsTool::on_defaults_clicked()
+{
+	QListWidgetItem *item = ui->scripts->currentItem();
+	if (!item)
+		return;
+
+	SetScriptDefaults(
+		item->data(Qt::UserRole).toString().toUtf8().constData());
+}
+
 /* ----------------------------------------------------------------- */
 
 extern "C" void FreeScripts()

UI/frontend-plugins/frontend-tools/scripts.hpp

@@ -37,6 +37,7 @@ public:
 	void RemoveScript(const char *path);
 	void ReloadScript(const char *path);
 	void RefreshLists();
+	void SetScriptDefaults(const char *path);
 
 public slots:
 	void on_close_clicked();
@@ -45,6 +46,7 @@ public slots:
 	void on_removeScripts_clicked();
 	void on_reloadScripts_clicked();
 	void on_scriptLog_clicked();
+	void on_defaults_clicked();
 
 	void on_scripts_currentRowChanged(int row);