Add setting for cover providers

src/covermanager/coverproviders.cpp

@@ -2,6 +2,7 @@
  * Strawberry Music Player
  * This file was part of Clementine.
  * Copyright 2010, David Sansome <me@davidsansome.com>
+ * Copyright 2018-2020, Jonas Kvinge <jonas@jkvinge.net>
  *
  * Strawberry is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -22,13 +23,23 @@
 
 #include <QObject>
 #include <QMutex>
+#include <QList>
+#include <QMap>
+#include <QVariant>
+#include <QVariantList>
 #include <QString>
+#include <QStringList>
+#include <QSettings>
 #include <QtDebug>
 
 #include "core/logging.h"
 #include "coverprovider.h"
 #include "coverproviders.h"
 
+#include "settings/coverssettingspage.h"
+
+int CoverProviders::NextOrderId = 0;
+
 CoverProviders::CoverProviders(QObject *parent) : QObject(parent) {}
 
 CoverProviders::~CoverProviders() {
@@ -39,6 +50,48 @@ CoverProviders::~CoverProviders() {
 
 }
 
+void CoverProviders::ReloadSettings() {
+
+  QMap<int, QString> all_providers;
+  for (CoverProvider *provider : cover_providers_.keys()) {
+    if (!provider->is_enabled()) continue;
+    all_providers.insert(provider->order(), provider->name());
+  }
+
+  QSettings s;
+  s.beginGroup(CoversSettingsPage::kSettingsGroup);
+  QStringList providers_enabled = s.value("providers", QStringList() << all_providers.values()).toStringList();
+  s.endGroup();
+
+  int i = 0;
+  QList<CoverProvider*> providers;
+  for (const QString &name : providers_enabled) {
+    CoverProvider *provider = ProviderByName(name);
+    if (provider) {
+      provider->set_enabled(true);
+      provider->set_order(++i);
+      providers << provider;
+    }
+  }
+
+  for (CoverProvider *provider : cover_providers_.keys()) {
+    if (!providers.contains(provider)) {
+      provider->set_enabled(false);
+      provider->set_order(++i);
+    }
+  }
+
+}
+
+CoverProvider *CoverProviders::ProviderByName(const QString &name) const {
+
+  for (CoverProvider *provider : cover_providers_.keys()) {
+    if (provider->name() == name) return provider;
+  }
+  return nullptr;
+
+}
+
 void CoverProviders::AddProvider(CoverProvider *provider) {
 
   {
@@ -47,6 +100,8 @@ void CoverProviders::AddProvider(CoverProvider *provider) {
     connect(provider, SIGNAL(destroyed()), SLOT(ProviderDestroyed()));
   }
 
+  provider->set_order(++NextOrderId);
+
   qLog(Debug) << "Registered cover provider" << provider->name();
 
 }