Merge pull request #1280 from isanae/command-line

Command line and instance dialogs

1 files changed, 1084 insertions, 0 deletions

diff --git a/src/createinstancedialogpages.cpp b/src/createinstancedialogpages.cpp
new file mode 100644
index 00000000..26f2f61d
--- /dev/null
+++ b/src/createinstancedialogpages.cpp
@@ -0,0 +1,1084 @@
+#include "createinstancedialogpages.h"
+#include "ui_createinstancedialog.h"
+#include "instancemanager.h"
+#include "settings.h"
+#include "plugincontainer.h"
+#include "settingsdialognexus.h"
+#include "shared/appconfig.h"
+#include <iplugingame.h>
+#include <report.h>
+#include <utility.h>
+
+namespace cid
+{
+
+using namespace MOBase;
+using MOBase::TaskDialog;
+
+QString makeDefaultPath(const std::wstring& dir)
+{
+  return QDir::toNativeSeparators(PathSettings::makeDefaultPath(
+    QString::fromStdWString(dir)));
+}
+
+
+
+PlaceholderLabel::PlaceholderLabel(QLabel* label)
+  : m_label(label), m_original(label->text())
+{
+}
+
+void PlaceholderLabel::setText(const QString& arg)
+{
+  if (m_original.contains("%1")) {
+    m_label->setText(m_original.arg(arg));
+  }
+}
+
+void PlaceholderLabel::setVisible(bool b)
+{
+  m_label->setVisible(b);
+}
+
+
+
+Page::Page(CreateInstanceDialog& dlg)
+  : ui(dlg.getUI()), m_dlg(dlg), m_pc(dlg.pluginContainer()), m_skip(false)
+{
+}
+
+bool Page::ready() const
+{
+  return true;
+}
+
+bool Page::skip() const
+{
+  return m_skip || doSkip();
+}
+
+bool Page::doSkip() const
+{
+  return false;
+}
+
+void Page::activated()
+{
+  // no-op
+}
+
+void Page::setSkip(bool b)
+{
+  m_skip = b;
+}
+
+void Page::updateNavigation()
+{
+  m_dlg.updateNavigation();
+}
+
+void Page::next()
+{
+  m_dlg.next();
+}
+
+
+CreateInstanceDialog::Types Page::selectedInstanceType() const
+{
+  // no-op
+  return CreateInstanceDialog::NoType;
+}
+
+IPluginGame* Page::selectedGame() const
+{
+  // no-op
+  return nullptr;
+}
+
+QString Page::selectedGameLocation() const
+{
+  // no-op
+  return {};
+}
+
+QString Page::selectedGameVariant() const
+{
+  // no-op
+  return {};
+}
+
+QString Page::selectedInstanceName() const
+{
+  // no-op
+  return {};
+}
+
+CreateInstanceDialog::Paths Page::selectedPaths() const
+{
+  // no-op
+  return {};
+}
+
+
+IntroPage::IntroPage(CreateInstanceDialog& dlg)
+  : Page(dlg)
+{
+}
+
+bool IntroPage::doSkip() const
+{
+  return GlobalSettings::hideCreateInstanceIntro();
+}
+
+
+TypePage::TypePage(CreateInstanceDialog& dlg)
+  : Page(dlg), m_type(CreateInstanceDialog::NoType)
+{
+  ui->createGlobal->setDescription(
+    ui->createGlobal->description()
+      .arg(InstanceManager::singleton().instancesPath()));
+
+  ui->createPortable->setDescription(
+    ui->createPortable->description()
+      .arg(InstanceManager::portablePath()));
+
+  if (InstanceManager::singleton().portableInstanceExists()) {
+    ui->createPortable->setEnabled(false);
+    ui->portableExistsLabel->setVisible(true);
+  } else {
+    ui->createPortable->setEnabled(true);
+    ui->portableExistsLabel->setVisible(false);
+  }
+
+  QObject::connect(
+    ui->createGlobal, &QAbstractButton::clicked, [&]{ global(); });
+
+  QObject::connect(
+    ui->createPortable, &QAbstractButton::clicked, [&]{ portable(); });
+}
+
+bool TypePage::ready() const
+{
+  return (m_type != CreateInstanceDialog::NoType);
+}
+
+CreateInstanceDialog::Types TypePage::selectedInstanceType() const
+{
+  return m_type;
+}
+
+void TypePage::global()
+{
+  m_type = CreateInstanceDialog::Global;
+
+  ui->createGlobal->setChecked(true);
+  ui->createPortable->setChecked(false);
+
+  next();
+}
+
+void TypePage::portable()
+{
+  m_type = CreateInstanceDialog::Portable;
+
+  ui->createGlobal->setChecked(false);
+  ui->createPortable->setChecked(true);
+
+  next();
+}
+
+
+GamePage::Game::Game(IPluginGame* g)
+  : game(g), installed(g->isInstalled())
+{
+  if (installed) {
+    dir = game->gameDirectory().path();
+  }
+}
+
+
+GamePage::GamePage(CreateInstanceDialog& dlg)
+  : Page(dlg), m_selection(nullptr)
+{
+  createGames();
+  fillList();
+
+  m_filter.setEdit(ui->gamesFilter);
+
+  QObject::connect(&m_filter, &FilterWidget::changed, [&]{ fillList(); });
+  QObject::connect(ui->showAllGames, &QCheckBox::clicked, [&]{ fillList(); });
+}
+
+bool GamePage::ready() const
+{
+  return (m_selection != nullptr);
+}
+
+IPluginGame* GamePage::selectedGame() const
+{
+  if (!m_selection) {
+    return nullptr;
+  }
+
+  return m_selection->game;
+}
+
+QString GamePage::selectedGameLocation() const
+{
+  if (!m_selection) {
+    return {};
+  }
+
+  return QDir::toNativeSeparators(m_selection->dir);
+}
+
+void GamePage::select(IPluginGame* game, const QString& dir)
+{
+  Game* checked = findGame(game);
+
+  if (checked) {
+    if (!checked->installed) {
+      if (dir.isEmpty()) {
+        const auto path = QFileDialog::getExistingDirectory(
+          &m_dlg, QObject::tr("Find game installation"));
+
+        if (path.isEmpty()) {
+          checked = nullptr;
+        } else {
+          checked = checkInstallation(path, checked);
+        }
+      } else {
+       checked->dir = dir;
+       checked->installed = true;
+      }
+    }
+  }
+
+  m_selection = checked;
+  selectButton(checked);
+  updateNavigation();
+
+  if (checked) {
+    next();
+  }
+}
+
+void GamePage::selectCustom()
+{
+  const auto path = QFileDialog::getExistingDirectory(
+    &m_dlg, QObject::tr("Find game installation"));
+
+  if (path.isEmpty()) {
+    // reselect the previous button
+    selectButton(m_selection);
+    return;
+  }
+
+  for (auto& g : m_games) {
+    if (g->game->looksValid(path)) {
+      g->dir = path;
+      g->installed = true;
+      select(g->game);
+      updateButton(g.get());
+      return;
+    }
+  }
+
+  warnUnrecognized(path);
+  selectButton(m_selection);
+}
+
+void GamePage::warnUnrecognized(const QString& path)
+{
+  QString supportedGames;
+  for (auto* game : sortedGamePlugins()) {
+    supportedGames += game->gameName() + "\n";
+  }
+
+  QMessageBox dlg(&m_dlg);
+
+  dlg.setWindowTitle(QObject::tr("Unrecognized game"));
+  dlg.setText(QObject::tr(
+    "The folder %1 does not seem to contain a game Mod Organizer can "
+    "manage.").arg(path));
+  dlg.setInformativeText(
+    QObject::tr("See details for the list of supported games."));
+  dlg.setDetailedText(supportedGames);
+  dlg.setIcon(QMessageBox::Warning);
+  dlg.setStandardButtons(QMessageBox::Ok);
+
+  dlg.exec();
+}
+
+std::vector<IPluginGame*> GamePage::sortedGamePlugins() const
+{
+  std::vector<IPluginGame*> v;
+
+  for (auto* game : m_pc.plugins<IPluginGame>()) {
+    v.push_back(game);
+  }
+
+  std::sort(v.begin(), v.end(), [](auto* a, auto* b) {
+    return (naturalCompare(a->gameName(), b->gameName()) < 0);
+  });
+
+  return v;
+}
+
+GamePage::Game* GamePage::findGame(IPluginGame* game)
+{
+  for (auto& g : m_games) {
+    if (g->game == game) {
+      return g.get();
+    }
+  }
+
+  return nullptr;
+}
+
+void GamePage::createGames()
+{
+  m_games.clear();
+
+  for (auto* game : sortedGamePlugins()) {
+    m_games.push_back(std::make_unique<Game>(game));
+  }
+}
+
+void GamePage::updateButton(Game* g)
+{
+  if (!g || !g->button) {
+    return;
+  }
+
+  g->button->setText(g->game->gameName());
+  g->button->setIcon(g->game->gameIcon());
+
+  if (g->installed) {
+    g->button->setDescription(g->dir);
+  } else {
+    g->button->setDescription(QObject::tr("No installation found"));
+  }
+}
+
+void GamePage::selectButton(Game* g)
+{
+  // go through each game, set the button that is for game `g` as active;
+  // some button might not exist, which happens when selecting a custom
+  // folder for a game that was considered uninstalled
+
+  for (const auto& gg : m_games) {
+    if (!g) {
+      // nothing should be selected
+      if (gg->button) {
+        gg->button->setChecked(false);
+      }
+
+      continue;
+    }
+
+    if (gg->game == g->game) {
+      // this is the button that should be selected
+
+      if (!gg->button) {
+        // this happens when the button wasn't visible because the game
+        // was not installed; create it and show it
+        // and it has a button, just check it
+        createGameButton(gg.get());
+        addButton(gg->button);
+      }
+
+      gg->button->setChecked(true);
+      gg->button->setFocus();
+    } else {
+      // this is not the button you're looking for
+      if (gg->button) {
+        gg->button->setChecked(false);
+      }
+    }
+  }
+}
+
+QCommandLinkButton* GamePage::createCustomButton()
+{
+  auto* b = new QCommandLinkButton;
+
+  b->setText(QObject::tr("Browse..."));
+  b->setDescription(
+    QObject::tr("The folder must contain a valid game installation"));
+
+  QObject::connect(b, &QAbstractButton::clicked, [&] {
+    selectCustom();
+  });
+
+  return b;
+}
+
+void GamePage::createGameButton(Game* g)
+{
+  g->button = new QCommandLinkButton;
+  g->button->setCheckable(true);
+
+  updateButton(g);
+
+  QObject::connect(g->button, &QAbstractButton::clicked, [g, this] {
+    select(g->game);
+  });
+}
+
+void GamePage::fillList()
+{
+  const bool showAll = ui->showAllGames->isChecked();
+
+  clearButtons();
+
+  for (auto& g : m_games) {
+    g->button = nullptr;
+
+    if (!showAll && !g->installed) {
+      // not installed
+      continue;
+    }
+
+    if (!m_filter.matches(g->game->gameName())) {
+      continue;
+    }
+
+    createGameButton(g.get());
+    addButton(g->button);
+  }
+
+  addButton(createCustomButton());
+}
+
+void GamePage::clearButtons()
+{
+  auto* ly = static_cast<QVBoxLayout*>(ui->games->layout());
+
+  ui->games->setUpdatesEnabled(false);
+
+  // delete all children
+  qDeleteAll(ui->games->findChildren<QWidget*>("", Qt::FindDirectChildrenOnly));
+
+  // stretch widgets added with addStretch() are not in the parent widget,
+  // they have to be deleted from the layout itself
+  while (auto* child=ly->takeAt(0))
+    delete child;
+
+  // add a stretch, buttons will be added before
+  ly->addStretch();
+
+  ui->games->setUpdatesEnabled(true);
+}
+
+void GamePage::addButton(QAbstractButton* b)
+{
+  auto* ly = static_cast<QVBoxLayout*>(ui->games->layout());
+
+  // insert before the stretch
+  ly->insertWidget(ly->count() - 1, b);
+}
+
+GamePage::Game* GamePage::checkInstallation(const QString& path, Game* g)
+{
+  if (g->game->looksValid(path)) {
+    // okay
+    return g;
+  }
+
+  // the selected game can't use that folder, find another one
+  auto* otherGame = findAnotherGame(path);
+  if (otherGame == g->game) {
+    // shouldn't happen, but okay
+    return g;
+  }
+
+  if (otherGame) {
+    auto* confirmedGame = confirmOtherGame(path, g->game, otherGame);
+
+    if (!confirmedGame) {
+      // cancelled
+      return nullptr;
+    }
+
+    // make it look like the user clicked that button instead
+    g = findGame(confirmedGame);
+    if (!g) {
+      return nullptr;
+    }
+  } else {
+    // nothing can manage this, but the user can override
+    if (!confirmUnknown(path, g->game)) {
+      // cancelled
+      return nullptr;
+    }
+  }
+
+  // remember this path
+  g->dir = path;
+  g->installed = true;
+
+  updateButton(g);
+
+  return g;
+}
+
+IPluginGame* GamePage::findAnotherGame(const QString& path)
+{
+  for (auto* otherGame : m_pc.plugins<IPluginGame>()) {
+    if (otherGame->looksValid(path)) {
+      return otherGame;
+    }
+  }
+
+  return nullptr;
+}
+
+bool GamePage::confirmUnknown(const QString& path, IPluginGame* game)
+{
+  const auto r = TaskDialog(&m_dlg)
+    .title(QObject::tr("Unrecognized game"))
+    .main(QObject::tr("Unrecognized game"))
+    .content(QObject::tr(
+      "The folder %1 does not seem to contain an installation for "
+      "<span style=\"white-space: nowrap; font-weight: bold;\">%2</span> or "
+      "for any other game Mod Organizer can manage.")
+      .arg(path)
+      .arg(game->gameName()))
+    .button({
+      QObject::tr("Use this folder for %1").arg(game->gameName()),
+      QObject::tr("I know what I'm doing"),
+      QMessageBox::Ignore})
+    .button({
+      QObject::tr("Cancel"),
+      QMessageBox::Cancel})
+    .exec();
+
+  return (r == QMessageBox::Ignore);
+}
+
+IPluginGame* GamePage::confirmOtherGame(
+  const QString& path,
+  IPluginGame* selectedGame, IPluginGame* guessedGame)
+{
+  const auto r = TaskDialog(&m_dlg)
+    .title(QObject::tr("Incorrect game"))
+    .main(QObject::tr("Incorrect game"))
+    .content(QObject::tr(
+      "The folder %1 seems to contain an installation for "
+      "<span style=\"white-space: nowrap; font-weight: bold;\">%2</span>, "
+      "not "
+      "<span style=\"white-space: nowrap; font-weight: bold;\">%3</span>.")
+      .arg(path)
+      .arg(guessedGame->gameName())
+      .arg(selectedGame->gameName()))
+    .button({
+      QObject::tr("Manage %1 instead").arg(guessedGame->gameName()),
+      QMessageBox::Ok})
+    .button({
+      QObject::tr("Use this folder for %1").arg(selectedGame->gameName()),
+      QObject::tr("I know what I'm doing"),
+      QMessageBox::Ignore})
+    .button({
+      QObject::tr("Cancel"),
+      QMessageBox::Cancel})
+    .exec();
+
+  switch (r)
+  {
+    case QMessageBox::Ok:
+      return guessedGame;
+
+    case QMessageBox::Ignore:
+      return selectedGame;
+
+    case QMessageBox::Cancel:
+    default:
+      return nullptr;
+  }
+}
+
+
+VariantsPage::VariantsPage(CreateInstanceDialog& dlg)
+  : Page(dlg), m_previousGame(nullptr)
+{
+}
+
+bool VariantsPage::ready() const
+{
+  return !m_selection.isEmpty();
+}
+
+bool VariantsPage::doSkip() const
+{
+  auto* g = m_dlg.game();
+  if (!g) {
+    // shouldn't happen
+    return true;
+  }
+
+  const auto variants = g->gameVariants();
+  return (variants.size() < 2);
+}
+
+void VariantsPage::activated()
+{
+  auto* g = m_dlg.game();
+
+  if (m_previousGame != g) {
+    m_previousGame = g;
+    m_selection = "";
+    fillList();
+  }
+}
+
+void VariantsPage::select(const QString& variant)
+{
+  for (auto* b : m_buttons) {
+    if (b->text() == variant) {
+      m_selection = variant;
+      b->setChecked(true);
+    } else {
+      b->setChecked(false);
+    }
+  }
+
+  updateNavigation();
+
+  if (!m_selection.isEmpty()) {
+    next();
+  }
+}
+
+QString VariantsPage::selectedGameVariant() const
+{
+  auto* g = m_dlg.game();
+  if (!g) {
+    // shouldn't happen
+    return {};
+  }
+
+  const auto variants = g->gameVariants();
+  if (variants.size() < 2) {
+    return {};
+  } else {
+    return m_selection;
+  }
+}
+
+void VariantsPage::fillList()
+{
+  ui->editions->clear();
+  m_buttons.clear();
+
+  auto* g = m_dlg.game();
+  if (!g) {
+    // shouldn't happen
+    return;
+  }
+
+  const auto variants = g->gameVariants();
+  for (auto& v : variants) {
+    auto* b = new QCommandLinkButton(v);
+    b->setCheckable(true);
+
+    QObject::connect(b, &QAbstractButton::clicked, [v, this] {
+      select(v);
+    });
+
+    ui->editions->addButton(b, QDialogButtonBox::AcceptRole);
+    m_buttons.push_back(b);
+  }
+}
+
+
+NamePage::NamePage(CreateInstanceDialog& dlg) :
+  Page(dlg), m_modified(false), m_okay(false),
+  m_label(ui->instanceNameLabel), m_exists(ui->instanceNameExists),
+  m_invalid(ui->instanceNameInvalid)
+{
+  QObject::connect(
+    ui->instanceName, &QLineEdit::textEdited, [&]{ onChanged(); });
+}
+
+bool NamePage::ready() const
+{
+  return m_okay;
+}
+
+bool NamePage::doSkip() const
+{
+  return (m_dlg.instanceType() == CreateInstanceDialog::Portable);
+}
+
+void NamePage::activated()
+{
+  auto* g = m_dlg.game();
+  if (!g) {
+    // shouldn't happen, next should be disabled
+    return;
+  }
+
+  m_label.setText(g->gameName());
+
+  if (!m_modified || ui->instanceName->text().isEmpty()) {
+    const auto n = InstanceManager::singleton().makeUniqueName(g->gameName());
+    ui->instanceName->setText(n);
+    m_modified = false;
+  }
+
+  updateWarnings();
+}
+
+QString NamePage::selectedInstanceName() const
+{
+  if (!m_okay) {
+    return {};
+  }
+
+  const auto text = ui->instanceName->text().trimmed();
+  return InstanceManager::singleton().sanitizeInstanceName(text);
+}
+
+void NamePage::onChanged()
+{
+  m_modified = true;
+  updateWarnings();
+}
+
+void NamePage::updateWarnings()
+{
+  const auto root = InstanceManager::singleton().instancesPath();
+
+  m_okay = checkName(root, ui->instanceName->text());
+  updateNavigation();
+}
+
+bool NamePage::checkName(QString parentDir, QString name)
+{
+  bool exists = false;
+  bool invalid = false;
+  bool empty = false;
+
+  name = name.trimmed();
+
+  if (name.isEmpty()) {
+    empty = true;
+  } else {
+    if (InstanceManager::singleton().validInstanceName(name)) {
+      exists = QDir(parentDir).exists(name);
+    } else {
+      invalid = true;
+    }
+  }
+
+  bool okay = false;
+
+  if (exists) {
+    m_exists.setVisible(true);
+    m_exists.setText(QDir(parentDir).filePath(name));
+    m_invalid.setVisible(false);
+  } else if (invalid) {
+    m_exists.setVisible(false);
+    m_invalid.setVisible(true);
+    m_invalid.setText(name);
+  } else {
+    okay = !empty;
+    m_exists.setVisible(false);
+    m_invalid.setVisible(false);
+  }
+
+  return okay;
+}
+
+
+PathsPage::PathsPage(CreateInstanceDialog& dlg) :
+  Page(dlg), m_lastType(CreateInstanceDialog::NoType),
+  m_label(ui->pathsLabel),
+  m_simpleExists(ui->locationExists), m_simpleInvalid(ui->locationInvalid),
+  m_advancedExists(ui->advancedDirExists),
+  m_advancedInvalid(ui->advancedDirInvalid)
+{
+  QObject::connect(ui->location, &QLineEdit::textEdited, [&]{ onChanged(); });
+  QObject::connect(ui->base, &QLineEdit::textEdited, [&]{ onChanged(); });
+  QObject::connect(ui->downloads, &QLineEdit::textEdited, [&]{ onChanged(); });
+  QObject::connect(ui->mods, &QLineEdit::textEdited, [&]{ onChanged(); });
+  QObject::connect(ui->profiles, &QLineEdit::textEdited, [&]{ onChanged(); });
+  QObject::connect(ui->overwrite, &QLineEdit::textEdited, [&]{ onChanged(); });
+
+  QObject::connect(
+    ui->advancedPathOptions, &QCheckBox::clicked, [&]{ onAdvanced(); });
+
+  ui->pathPages->setCurrentIndex(0);
+}
+
+
+bool PathsPage::ready() const
+{
+  return checkPaths();
+}
+
+void PathsPage::activated()
+{
+  const auto name = m_dlg.instanceName();
+  const auto type = m_dlg.instanceType();
+
+  const bool changed = (m_lastInstanceName != name) || (m_lastType != type);
+
+  setPaths(name, changed);
+  checkPaths();
+  updateNavigation();
+
+  m_label.setText(m_dlg.game()->gameName());
+  m_lastInstanceName = name;
+  m_lastType = type;
+}
+
+CreateInstanceDialog::Paths PathsPage::selectedPaths() const
+{
+  CreateInstanceDialog::Paths p;
+
+  if (ui->advancedPathOptions->isChecked()) {
+    p.base = ui->base->text();
+    p.downloads = ui->downloads->text();
+    p.mods = ui->mods->text();
+    p.profiles = ui->profiles->text();
+    p.overwrite = ui->overwrite->text();
+  } else {
+    p.base = ui->location->text();
+  }
+
+  return p;
+}
+
+void PathsPage::onChanged()
+{
+  checkPaths();
+  updateNavigation();
+}
+
+bool PathsPage::checkPaths() const
+{
+  if (ui->advancedPathOptions->isChecked()) {
+    return
+      checkAdvancedPath(ui->base->text()) &&
+      checkAdvancedPath(resolve(ui->downloads->text())) &&
+      checkAdvancedPath(resolve(ui->mods->text())) &&
+      checkAdvancedPath(resolve(ui->profiles->text())) &&
+      checkAdvancedPath(resolve(ui->overwrite->text()));
+  } else {
+    return checkPath(ui->location->text(), m_simpleExists, m_simpleInvalid);
+  }
+}
+
+bool PathsPage::checkAdvancedPath(const QString& path) const
+{
+  return checkPath(path, m_advancedExists, m_advancedInvalid);
+}
+
+QString PathsPage::resolve(const QString& path) const
+{
+  return PathSettings::resolve(path, ui->base->text());
+}
+
+void PathsPage::onAdvanced()
+{
+  if (ui->advancedPathOptions->isChecked()) {
+    ui->base->setText(ui->location->text());
+    ui->pathPages->setCurrentIndex(1);
+  } else {
+    ui->location->setText(ui->base->text());
+    ui->pathPages->setCurrentIndex(0);
+  }
+
+  checkPaths();
+}
+
+void PathsPage::setPaths(const QString& name, bool force)
+{
+  QString path;
+
+  if (m_dlg.instanceType() == CreateInstanceDialog::Portable) {
+    path = InstanceManager::portablePath();
+  } else {
+    const auto root = InstanceManager::singleton().instancesPath();
+    path = root + "/" + name;
+  }
+
+  path = QDir::toNativeSeparators(QDir::cleanPath(path));
+
+  setIfEmpty(ui->location, path, force);
+  setIfEmpty(ui->base, path, force);
+
+  setIfEmpty(ui->downloads, makeDefaultPath(AppConfig::downloadPath()), force);
+  setIfEmpty(ui->mods, makeDefaultPath(AppConfig::modsPath()), force);
+  setIfEmpty(ui->profiles, makeDefaultPath(AppConfig::profilesPath()), force);
+  setIfEmpty(ui->overwrite, makeDefaultPath(AppConfig::overwritePath()), force);
+}
+
+void PathsPage::setIfEmpty(QLineEdit* e, const QString& path, bool force)
+{
+  if (e->text().isEmpty() || force) {
+    e->setText(path);
+  }
+}
+
+bool PathsPage::checkPath(
+  QString path,
+  PlaceholderLabel& existsLabel, PlaceholderLabel& invalidLabel) const
+{
+  bool exists = false;
+  bool invalid = false;
+  bool empty = false;
+
+  path = QDir::toNativeSeparators(path.trimmed());
+
+  if (path.isEmpty()) {
+    empty = true;
+  } else {
+    const QDir d(path);
+
+    if (InstanceManager::singleton().validInstanceName(d.dirName())) {
+      if (m_dlg.instanceType() == CreateInstanceDialog::Portable) {
+        // the default data path for a portable instance is the application
+        // directory, so it's not an error if it exists
+        if (QDir(path) != InstanceManager::singleton().portablePath()) {
+          exists = QDir(path).exists();
+        }
+      } else {
+        exists = QDir(path).exists();
+      }
+    } else {
+      invalid = true;
+    }
+  }
+
+  bool okay = true;
+
+  if (invalid) {
+    okay = false;
+    existsLabel.setVisible(false);
+    invalidLabel.setVisible(true);
+    invalidLabel.setText(path);
+  } else if (empty) {
+    okay = false;
+    existsLabel.setVisible(false);
+    invalidLabel.setVisible(false);
+  } else if (exists) {
+    // this is just a warning
+    existsLabel.setVisible(true);
+    existsLabel.setText(path);
+    invalidLabel.setVisible(false);
+  } else {
+    okay = true;
+    existsLabel.setVisible(false);
+    invalidLabel.setVisible(false);
+  }
+
+  return okay;
+}
+
+
+NexusPage::NexusPage(CreateInstanceDialog& dlg)
+  : Page(dlg), m_skip(false)
+{
+  m_connectionUI.reset(new NexusConnectionUI(
+    &m_dlg,
+    dlg.settings(),
+    ui->nexusConnect,
+    nullptr,
+    ui->nexusManual,
+    ui->nexusLog));
+
+  // just check it once, or connecting and then going back and forth would skip
+  // the page, which would be unexpected
+  m_skip = GlobalSettings::hasNexusApiKey();
+}
+
+NexusPage::~NexusPage() = default;
+
+bool NexusPage::ready() const
+{
+  return true;
+}
+
+bool NexusPage::doSkip() const
+{
+  return m_skip;
+}
+
+void NexusPage::activated()
+{
+}
+
+
+ConfirmationPage::ConfirmationPage(CreateInstanceDialog& dlg)
+  : Page(dlg)
+{
+}
+
+void ConfirmationPage::activated()
+{
+  ui->review->setPlainText(makeReview());
+  ui->creationLog->clear();
+}
+
+QString ConfirmationPage::toLocalizedString(CreateInstanceDialog::Types t) const
+{
+  switch (t)
+  {
+    case CreateInstanceDialog::Global:
+      return QObject::tr("Global");
+
+    case CreateInstanceDialog::Portable:
+      return QObject::tr("Portable");
+
+    default:
+      return QObject::tr("Instance type: %1").arg(QObject::tr("?"));
+  }
+}
+
+QString ConfirmationPage::makeReview() const
+{
+  QStringList lines;
+  const auto paths = m_dlg.paths();
+
+  lines.push_back(QObject::tr("Instance type: %1").arg(toLocalizedString(m_dlg.instanceType())));
+  lines.push_back(QObject::tr("Instance location: %1").arg(m_dlg.dataPath()));
+
+  if (m_dlg.instanceType() != CreateInstanceDialog::Portable) {
+    lines.push_back(QObject::tr("Instance name: %1").arg(m_dlg.instanceName()));
+  }
+
+  if (paths.downloads.isEmpty()) {
+    // simple settings
+    if (paths.base != m_dlg.dataPath()) {
+      lines.push_back(QObject::tr("Base directory: %1").arg(paths.base));
+    }
+  } else {
+    // advanced settings
+    lines.push_back(QObject::tr("Base directory: %1").arg(paths.base));
+    lines.push_back(dirLine(QObject::tr("Downloads"), paths.downloads));
+    lines.push_back(dirLine(QObject::tr("Mods"), paths.mods));
+    lines.push_back(dirLine(QObject::tr("Profiles"), paths.profiles));
+    lines.push_back(dirLine(QObject::tr("Overwrite"), paths.overwrite));
+  }
+
+  // game
+  QString name = m_dlg.game()->gameName();
+  if (!m_dlg.gameVariant().isEmpty()) {
+    name += " (" + m_dlg.gameVariant() + ")";
+  }
+
+  lines.push_back(QObject::tr("Game: %1").arg(name));
+  lines.push_back(QObject::tr("Game location: %1").arg(m_dlg.gameLocation()));
+
+  return lines.join("\n");
+}
+
+QString ConfirmationPage::dirLine(const QString& caption, const QString& path) const
+{
+  return QString("  - %1: %2").arg(caption).arg(path);
+}
+
+} // namespace