395 lines
13 KiB
C++
395 lines
13 KiB
C++
/* === This file is part of Calamares - <https://github.com/calamares> ===
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*
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* Copyright 2019, Dominic Hayes <ferenosdev@outlook.com>
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* Copyright 2019, Gabriel Craciunescu <crazy@frugalware.org>
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* Copyright 2014-2015, Teo Mrnjavac <teo@kde.org>
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* Copyright 2017-2018, Adriaan de Groot <groot@kde.org>
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*
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* Calamares is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Calamares is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Calamares. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "ViewManager.h"
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#include "utils/Logger.h"
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#include "viewpages/BlankViewStep.h"
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#include "viewpages/ViewStep.h"
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#include "ExecutionViewStep.h"
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#include "JobQueue.h"
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#include "utils/Retranslator.h"
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#include "Branding.h"
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#include "Settings.h"
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#include <QApplication>
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#include <QBoxLayout>
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#include <QMessageBox>
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#include <QMetaObject>
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namespace Calamares
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{
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ViewManager* ViewManager::s_instance = nullptr;
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ViewManager*
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ViewManager::instance()
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{
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return s_instance;
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}
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ViewManager*
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ViewManager::instance( QObject* parent )
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{
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Q_ASSERT( !s_instance );
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s_instance = new ViewManager( parent );
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return s_instance;
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}
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ViewManager::ViewManager( QObject* parent )
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: QObject( parent )
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, m_currentStep( 0 )
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, m_widget( new QWidget() )
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{
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Q_ASSERT( !s_instance );
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QBoxLayout* mainLayout = new QVBoxLayout;
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m_widget->setLayout( mainLayout );
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m_stack = new QStackedWidget( m_widget );
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m_stack->setContentsMargins( 0, 0, 0, 0 );
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mainLayout->addWidget( m_stack );
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m_back = new QPushButton( m_widget );
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m_next = new QPushButton( m_widget );
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m_quit = new QPushButton( m_widget );
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CALAMARES_RETRANSLATE(
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m_back->setText( tr( "&Back" ) );
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m_next->setText( tr( "&Next" ) );
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m_quit->setText( tr( "&Cancel" ) );
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QString tooltip = Calamares::Settings::instance()->isSetupMode()
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? tr( "Cancel setup without changing the system." )
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: tr( "Cancel installation without changing the system." );
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m_quit->setToolTip( tooltip );
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)
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QBoxLayout* bottomLayout = new QHBoxLayout;
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mainLayout->addLayout( bottomLayout );
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bottomLayout->addStretch();
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bottomLayout->addWidget( m_back );
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bottomLayout->addWidget( m_next );
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bottomLayout->addSpacing( 12 );
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bottomLayout->addWidget( m_quit );
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connect( m_next, &QPushButton::clicked, this, &ViewManager::next );
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connect( m_back, &QPushButton::clicked, this, &ViewManager::back );
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m_back->setEnabled( false );
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connect( m_quit, &QPushButton::clicked, this,
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[this]() { if ( this->confirmCancelInstallation() ) qApp->quit(); } );
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connect( JobQueue::instance(), &JobQueue::failed,
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this, &ViewManager::onInstallationFailed );
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connect( JobQueue::instance(), &JobQueue::finished,
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this, &ViewManager::next );
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if (Calamares::Settings::instance()->disableCancel())
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m_quit->setVisible( false );
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}
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ViewManager::~ViewManager()
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{
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m_widget->deleteLater();
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s_instance = nullptr;
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}
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QWidget*
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ViewManager::centralWidget()
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{
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return m_widget;
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}
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void
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ViewManager::addViewStep( ViewStep* step )
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{
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insertViewStep( m_steps.size(), step );
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// If this is the first inserted view step, update status of "Next" button
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if ( m_steps.count() == 1 )
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m_next->setEnabled( step->isNextEnabled() );
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}
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void
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ViewManager::insertViewStep( int before, ViewStep* step )
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{
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m_steps.insert( before, step );
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QLayout* layout = step->widget()->layout();
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if ( layout )
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layout->setContentsMargins( 0, 0, 0, 0 );
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m_stack->insertWidget( before, step->widget() );
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connect( step, &ViewStep::enlarge, this, &ViewManager::enlarge );
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connect( step, &ViewStep::nextStatusChanged,
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this, [this]( bool status )
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{
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ViewStep* vs = qobject_cast< ViewStep* >( sender() );
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if ( vs )
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{
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if ( vs == m_steps.at( m_currentStep ) )
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m_next->setEnabled( status );
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}
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} );
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m_stack->setCurrentIndex( 0 );
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step->widget()->setFocus();
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}
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void
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ViewManager::onInstallationFailed( const QString& message, const QString& details )
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{
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cError() << "Installation failed:";
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cDebug() << "- message:" << message;
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cDebug() << "- details:" << details;
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QString heading = Calamares::Settings::instance()->isSetupMode()
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? tr( "Setup Failed" )
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: tr( "Installation Failed" );
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QMessageBox* msgBox = new QMessageBox();
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msgBox->setIcon( QMessageBox::Critical );
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msgBox->setWindowTitle( tr( "Error" ) );
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msgBox->setText( "<strong>" + heading + "</strong>" );
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msgBox->setStandardButtons( QMessageBox::Close );
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msgBox->button( QMessageBox::Close )->setText( tr( "&Close" ) );
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QString text = "<p>" + message + "</p>";
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if ( !details.isEmpty() )
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text += "<p>" + details + "</p>";
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msgBox->setInformativeText( text );
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connect( msgBox, &QMessageBox::buttonClicked, qApp, &QApplication::quit );
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cDebug() << "Calamares will quit when the dialog closes.";
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msgBox->show();
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}
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void
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ViewManager::onInitFailed( const QStringList& modules)
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{
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// Because this means the installer / setup program is broken by the distributor,
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// don't bother being precise about installer / setup wording.
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QString title( tr( "Calamares Initialization Failed" ) );
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QString description( tr( "%1 can not be installed. Calamares was unable to load all of the configured modules. This is a problem with the way Calamares is being used by the distribution." ) );
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QString detailString;
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if ( modules.count() > 0 )
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{
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description.append( tr( "<br/>The following modules could not be loaded:" ) );
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QStringList details;
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details << QLatin1Literal("<ul>");
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for( const auto& m : modules )
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details << QLatin1Literal("<li>") << m << QLatin1Literal("</li>");
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details << QLatin1Literal("</ul>");
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detailString = details.join( QString() );
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}
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insertViewStep( 0, new BlankViewStep( title, description.arg( *Calamares::Branding::ProductName ), detailString ) );
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}
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ViewStepList
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ViewManager::viewSteps() const
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{
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return m_steps;
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}
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ViewStep*
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ViewManager::currentStep() const
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{
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return m_steps.value( m_currentStep );
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}
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int
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ViewManager::currentStepIndex() const
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{
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return m_currentStep;
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}
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static inline bool
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stepNextWillExecute(const ViewStepList& steps, int index)
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{
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return ( index + 1 < steps.count() ) && qobject_cast< ExecutionViewStep* >( steps.at( index + 1 ) );
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}
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void
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ViewManager::next()
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{
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ViewStep* step = m_steps.at( m_currentStep );
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bool executing = false;
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if ( step->isAtEnd() )
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{
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const auto* const settings = Calamares::Settings::instance();
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// Special case when the user clicks next on the very last page in a view phase
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// and right before switching to an execution phase.
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// Depending on Calamares::Settings, we show an "are you sure" prompt or not.
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if ( settings->showPromptBeforeExecution() && stepNextWillExecute( m_steps, m_currentStep ) )
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{
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QString title = settings->isSetupMode()
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? tr( "Continue with setup?" )
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: tr( "Continue with installation?" );
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QString question = settings->isSetupMode()
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? tr( "The %1 setup program is about to make changes to your "
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"disk in order to set up %2.<br/><strong>You will not be able "
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"to undo these changes.</strong>" )
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: tr( "The %1 installer is about to make changes to your "
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"disk in order to install %2.<br/><strong>You will not be able "
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"to undo these changes.</strong>" );
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QString confirm = settings->isSetupMode()
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? tr( "&Set up now" )
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: tr( "&Install now" );
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int reply =
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QMessageBox::question( m_widget,
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title,
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question.arg( *Calamares::Branding::ShortProductName, *Calamares::Branding::ShortVersionedName ),
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confirm,
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tr( "Go &back" ),
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QString(),
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0,
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1 );
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if ( reply == 1 )
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return;
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}
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m_currentStep++;
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m_stack->setCurrentIndex( m_currentStep );
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step->onLeave();
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m_steps.at( m_currentStep )->onActivate();
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executing = qobject_cast< ExecutionViewStep* >( m_steps.at( m_currentStep ) ) != nullptr;
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emit currentStepChanged();
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if ( executing )
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{
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m_back->setEnabled( false );
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m_next->setEnabled( false );
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// Enabled if there's nothing blocking it during exec
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m_quit->setEnabled( !( settings->dontCancel() || settings->disableCancel() ) );
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}
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else
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// Enabled unless it's also hidden
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m_quit->setEnabled( !settings->disableCancel() );
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}
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else
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step->next();
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m_next->setEnabled( !executing && m_steps.at( m_currentStep )->isNextEnabled() );
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m_back->setEnabled( !executing && m_steps.at( m_currentStep )->isBackEnabled() );
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updateButtonLabels();
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}
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void
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ViewManager::updateButtonLabels()
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{
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QString next = Calamares::Settings::instance()->isSetupMode()
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? tr( "&Set up" )
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: tr( "&Install" );
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QString complete = Calamares::Settings::instance()->isSetupMode()
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? tr( "Setup is complete. Close the setup program." )
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: tr( "The installation is complete. Close the installer." );
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QString quit = Calamares::Settings::instance()->isSetupMode()
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? tr( "Cancel setup without changing the system." )
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: tr( "Cancel installation without changing the system." );
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if ( stepNextWillExecute( m_steps, m_currentStep ) )
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m_next->setText( next );
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else
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m_next->setText( tr( "&Next" ) );
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if ( m_currentStep == m_steps.count() -1 && m_steps.last()->isAtEnd() )
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{
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m_quit->setText( tr( "&Done" ) );
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m_quit->setToolTip( complete );
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m_quit->setVisible( true ); // At end, always visible and enabled.
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m_quit->setEnabled( true );
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}
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else
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{
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if ( Calamares::Settings::instance()->disableCancel() )
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{
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m_quit->setVisible( false );
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m_quit->setEnabled( false ); // Can't be triggered through DBUS
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}
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m_quit->setText( tr( "&Cancel" ) );
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m_quit->setToolTip( quit );
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}
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}
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void
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ViewManager::back()
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{
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ViewStep* step = m_steps.at( m_currentStep );
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if ( step->isAtBeginning() && m_currentStep > 0 )
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{
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m_currentStep--;
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m_stack->setCurrentIndex( m_currentStep );
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step->onLeave();
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m_steps.at( m_currentStep )->onActivate();
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emit currentStepChanged();
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}
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else if ( !step->isAtBeginning() )
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step->back();
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else return;
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m_next->setEnabled( m_steps.at( m_currentStep )->isNextEnabled() );
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m_back->setEnabled( m_steps.at( m_currentStep )->isBackEnabled() );
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if ( m_currentStep == 0 && m_steps.first()->isAtBeginning() )
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m_back->setEnabled( false );
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updateButtonLabels();
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}
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bool ViewManager::confirmCancelInstallation()
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{
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// If it's NOT the last page of the last step, we ask for confirmation
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if ( !( m_currentStep == m_steps.count() -1 &&
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m_steps.last()->isAtEnd() ) )
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{
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QString title = Calamares::Settings::instance()->isSetupMode()
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? tr( "Cancel setup?" )
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: tr( "Cancel installation?" );
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QString question = Calamares::Settings::instance()->isSetupMode()
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? tr( "Do you really want to cancel the current setup process?\n"
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"The setup program will quit and all changes will be lost." )
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: tr( "Do you really want to cancel the current install process?\n"
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"The installer will quit and all changes will be lost." );
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QMessageBox mb( QMessageBox::Question,
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title,
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question,
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QMessageBox::Yes | QMessageBox::No,
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m_widget );
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mb.setDefaultButton( QMessageBox::No );
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mb.button( QMessageBox::Yes )->setText( tr( "&Yes" ) );
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mb.button( QMessageBox::No )->setText( tr( "&No" ) );
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int response = mb.exec();
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return response == QMessageBox::Yes;
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}
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else // Means we're at the end, no need to confirm.
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return true;
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}
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} // namespace
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