[users] Drop data-access from the Page

- get username, password etc. from the config object, not the page
- jobs now depend entirely on config
- handle logic of "what's the root password" in Config

src/modules/users/Config.cpp

@@ -437,6 +437,28 @@ Config::setRootPasswordSecondary( const QString& s )
     }
 }
 
+QString Config::rootPassword() const
+{
+    if ( writeRootPassword() )
+    {
+        if ( reuseUserPasswordForRoot() )
+            return userPassword();
+        return m_rootPassword;
+    }
+    return QString();
+}
+
+QString Config::rootPasswordSecondary() const
+{
+    if ( writeRootPassword() )
+    {
+        if ( reuseUserPasswordForRoot() )
+            return userPasswordSecondary();
+        return m_rootPasswordSecondary;
+    }
+    return QString();
+}
+
 
 STATICTEST void
 setConfigurationDefaultGroups( const QVariantMap& map, QStringList& defaultGroups )

src/modules/users/Config.h

@@ -130,10 +130,14 @@ public:
      */
     bool isPasswordAcceptable( const QString& password, QString& message );
 
+    // The user enters a password (and again in a separate UI element)
     QString userPassword() const { return m_userPassword; }
     QString userPasswordSecondary() const { return m_userPasswordSecondary; }
-    QString rootPassword() const { return m_rootPassword; }
-    QString rootPasswordSecondary() const { return m_rootPasswordSecondary; }
+    // The root password **may** be entered in the UI, or may be suppressed
+    //   entirely when writeRootPassword is off, or may be equal to
+    //   the user password when reuseUserPasswordForRoot is on.
+    QString rootPassword() const;
+    QString rootPasswordSecondary() const;
 
     static const QStringList& forbiddenLoginNames();
     static const QStringList& forbiddenHostNames();

src/modules/users/UsersPage.cpp

@@ -199,32 +199,6 @@ UsersPage::isReady() const
     return readyFields;
 }
 
-QString
-UsersPage::getRootPassword() const
-{
-    if ( m_config->writeRootPassword() )
-    {
-        if ( ui->checkBoxReusePassword->isChecked() )
-        {
-            return ui->textBoxUserPassword->text();
-        }
-        else
-        {
-            return ui->textBoxRootPassword->text();
-        }
-    }
-    else
-    {
-        return QString();
-    }
-}
-
-QPair< QString, QString >
-UsersPage::getUserPassword() const
-{
-    return QPair< QString, QString >( m_config->loginName(), ui->textBoxUserPassword->text() );
-}
-
 void
 UsersPage::fillGlobalStorage() const
 {

src/modules/users/UsersPage.h

@@ -48,11 +48,6 @@ public:
 
     void onActivate();
 
-    ///@brief Root password, depends on settings, may be empty
-    QString getRootPassword() const;
-    ///@brief User name and password
-    QPair< QString, QString > getUserPassword() const;
-
 protected slots:
     void onFullNameTextEdited( const QString& );
     void reportLoginNameStatus( const QString& );

src/modules/users/UsersViewStep.cpp

@@ -132,11 +132,10 @@ UsersViewStep::onLeave()
                            m_config->doAutoLogin(),
                            m_config->defaultGroups() );
 
-    auto userPW = m_widget->getUserPassword();
-    j = new SetPasswordJob( userPW.first, userPW.second );
+    j = new SetPasswordJob( m_config->loginName(), m_config->userPassword() );
     m_jobs.append( Calamares::job_ptr( j ) );
 
-    j = new SetPasswordJob( "root", m_widget->getRootPassword() );
+    j = new SetPasswordJob( "root", m_config->rootPassword() );
     m_jobs.append( Calamares::job_ptr( j ) );
 
     // TODO: Config object should create jobs