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path: root/src/mainwindow/mainwindow.cpp
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/*
 * This file is part of smolbote. It's copyrighted by the contributors recorded
 * in the version control history of the file, available from its original
 * location: https://neueland.iserlohn-fortress.net/smolbote.hg
 *
 * SPDX-License-Identifier: GPL-3.0
 */

#include "mainwindow.h"
#include "addressbar/addressbar.h"
#include "browser.h"
#include "subwindow.h"
#include "webengine/webview.h"
#include "widgets/dockwidget.h"
#include "widgets/navigationbar.h"
#include "widgets/searchform.h"
#include <QApplication>
#include <QCloseEvent>
#include <QJsonArray>
#include <QJsonObject>
#include <QLineEdit>
#include <QMdiArea>
#include <QMdiSubWindow>
#include <QMenuBar>
#include <QMessageBox>
#include <QShortcut>
#include <QStatusBar>
#include <QToolBar>
#include <QUrl>
#include <configuration/configuration.h>

#ifdef PLASMA_BLUR
#include <KWindowEffects>
#endif

MainWindow::MainWindow(std::shared_ptr<Configuration> &config, QWidget *parent)
    : QMainWindow(parent)
    , mdiArea(new QMdiArea(this))
{
    Q_ASSERT(config);
    m_config = config;

#ifdef PLASMA_BLUR
    setAttribute(Qt::WA_TranslucentBackground, true);
    KWindowEffects::enableBlurBehind(this->winId(), true);
#endif

    // create UI
    setWindowTitle(QString::fromStdString(config->value<std::string>("mainwindow.title").value()));
    resize(config->value<int>("mainwindow.width").value(), config->value<int>("mainwindow.height").value());
    if(config->value<bool>("mainwindow.maximized").value()) {
        setWindowState(Qt::WindowMaximized);
    }
    show();

    createMenuBar();

    navigationToolBar = new NavigationBar(config->section("navigation"), this);
    navigationToolBar->setMovable(config->value<bool>("navigation.movable").value());
    addToolBar(Qt::TopToolBarArea, navigationToolBar);
    navigationToolBar->connectWebView(nullptr);

    addressBar = new AddressBar(config->section("addressbar"), this);
    navigationToolBar->addWidget(addressBar);

    mdiArea->setBackground(Qt::NoBrush);
    setCentralWidget(mdiArea);
    mdiArea->setFocus();

    // status bar
    searchBox = new SearchForm(this);
    statusBar()->addPermanentWidget(searchBox);
    searchBox->setVisible(false);

    // connect signlas
    connect(mdiArea, &QMdiArea::subWindowActivated, this, [this](QMdiSubWindow *window) {
        disconnect(viewChangedConnection);
        disconnect(searchBoxConnection);
        disconnect(statusBarConnection);
        subWindowAction->setMenu(nullptr);

        auto *w = qobject_cast<SubWindow *>(window);
        if(w == nullptr) {
            // no current subwindow, clear everything
            setView(nullptr);
            subWindowAction->setMenu(nullptr);
        } else {
            setView(w->currentView());
            subWindowAction->setMenu(w->systemMenu());
            viewChangedConnection = connect(w, &SubWindow::currentViewChanged, this, &MainWindow::setView);
            statusBarConnection = connect(w, &SubWindow::showStatusMessage, statusBar(), &QStatusBar::showMessage);
        }
    });

    // address bar
    connect(addressBar, &AddressBar::search, this, [this](const QString &term) {
        if(this->currentView) {
            currentView->search(term);
            currentView->setFocus();
        }
    });
    connect(addressBar, &AddressBar::load, this, [this](const QUrl &url) {
        if(this->currentView) {
            currentView->load(url);
            currentView->setFocus();
        }
    });

    connect(addressBar, &AddressBar::giveFocus, this, [this]() {
        if(this->currentView) {
            currentView->setFocus();
        }
    });

    // search box
    auto *searchAction = new QAction(this);
    m_config->setShortcut(searchAction, "mainwindow.shortcuts.search");
    connect(searchAction, &QAction::triggered, this, [=]() {
        /* QTBUG-18665
         * When focusing out of the search box and hiding it, the first
         * (or earlier?) subwindow gets activated for some reason.
         */
        if(searchBox->isVisible()) {
            auto *w = mdiArea->currentSubWindow();
            searchBox->hide();
            mdiArea->setActiveSubWindow(w);
        } else {
            searchBox->show();
        }
    });
    QMainWindow::addAction(searchAction);
}

MainWindow::~MainWindow()
{
    disconnect(viewChangedConnection);
    disconnect(searchBoxConnection);
    disconnect(statusBarConnection);

    disconnect(addressBar);
}

void MainWindow::createMenuBar()
{
    Q_CHECK_PTR(mdiArea);

    // smolbote menu
    auto *smolboteMenu = menuBar()->addMenu(qApp->applicationDisplayName());

    auto *subwindowAction = smolboteMenu->addAction(tr("New subwindow"), this, [this]() {
        createSubWindow();
    });
    m_config->setShortcut(subwindowAction, "mainwindow.shortcuts.newGroup");

    auto *windowAction = smolboteMenu->addAction(tr("New window"), this, []() {
        auto *browser = qobject_cast<Browser *>(qApp);
        if(browser)
            browser->createWindow();
    });
    m_config->setShortcut(windowAction, "mainwindow.shortcuts.newWindow");

    smolboteMenu->addSeparator();

    auto *aboutAction = smolboteMenu->addAction(tr("About"), qobject_cast<Browser *>(qApp), &Browser::about);
    m_config->setShortcut(aboutAction, "mainwindow.shortcuts.about");
    smolboteMenu->addAction(tr("About Qt"), qApp, &QApplication::aboutQt);

    smolboteMenu->addSeparator();

    auto *quitAction = smolboteMenu->addAction(tr("Quit"), qApp, &QApplication::quit);
    m_config->setShortcut(quitAction, "mainwindow.shortcuts.quit");

    // window menu
    auto *windowMenu = menuBar()->addMenu(tr("Window"));

    auto *tileAction = windowMenu->addAction(tr("Tile windows"), mdiArea, &QMdiArea::tileSubWindows);
    m_config->setShortcut(tileAction, "mainwindow.shortcuts.tileWindows");

    auto *cascadeAction = windowMenu->addAction(tr("Cascade windows"), mdiArea, &QMdiArea::cascadeSubWindows);
    m_config->setShortcut(cascadeAction, "mainwindow.shortcuts.cascadeWindows");

    subWindowAction = windowMenu->addAction(tr("Current window"));

    // tools menu
    toolsMenu = menuBar()->addMenu(tr("Tools"));
}

void MainWindow::addAction(ActionLocation where, QAction *action)
{
    switch(where) {
    case ToolsMenu:
        toolsMenu->addAction(action);
        break;
    default:
        QMainWindow::addAction(action);
        break;
    }
}

void MainWindow::addDockWidget(Qt::DockWidgetArea area, QWidget *widget)
{
    QDockWidget *lastDock = nullptr;
    for(QDockWidget *dock : findChildren<QDockWidget *>()) {
        if(dockWidgetArea(dock) == area)
            lastDock = dock;
    }

    DockWidget *dock = new DockWidget(widget->windowTitle(), this);
    dock->setMinimumWidth(460);
    dock->setWidget(widget);

    if(lastDock == nullptr)
        QMainWindow::addDockWidget(area, dock);
    else
        tabifyDockWidget(lastDock, dock);
}

void MainWindow::removeDockWidget(QWidget *widget)
{
    const auto docks = this->findChildren<QDockWidget *>();
    for(QDockWidget *dock : docks) {
        if(dock->widget() == widget) {
            dock->widget()->setParent(nullptr);
            dock->close();
        }
    }
}

void MainWindow::createTab(const QUrl &url)
{
    auto *w = qobject_cast<SubWindow *>(mdiArea->currentSubWindow());
    if(w == nullptr) {
        w = createSubWindow(url.toString());
    } else {
        w->addTab(url);
    }
}

SubWindow *MainWindow::currentSubWindow() const
{
    return qobject_cast<SubWindow *>(mdiArea->currentSubWindow());
}

SubWindow *MainWindow::createSubWindow(const QString &url)
{
    auto *w = new SubWindow(m_config->section("window"), this);
    mdiArea->addSubWindow(w);
    w->showMaximized();
    w->setFocus();

    QJsonObject session;
    session.insert("profile", "");
    QJsonArray urls;
    if(!url.isEmpty())
        urls.append(url);
    session.insert("tabs", urls);

    w->restoreSession(session);

    return w;
}

void MainWindow::setView(WebView *view)
{
    if(currentView) {
        // disconnect old view
        disconnect(currentView, 0, addressBar, 0);
    }
    currentView = view;

    if(view) {
        addressBar->setPageMenu(view->pageMenu());
        addressBar->setToolsMenu(view->toolsMenu());

        connect(view, &WebView::urlChanged, addressBar, &AddressBar::setUrl);
        addressBar->setUrl(view->url());

        connect(view, &WebView::loadProgress, addressBar, &AddressBar::setProgress);
        addressBar->setProgress(100);

    } else {
        addressBar->setPageMenu(nullptr);
        addressBar->setToolsMenu(nullptr);

        addressBar->setUrl(QUrl());
        addressBar->setProgress(100);
    }

    navigationToolBar->connectWebView(view);
    searchBox->setView(view);
}

void MainWindow::closeEvent(QCloseEvent *event)
{
    if(mdiArea->subWindowList().count() > 1) {
        int choice = QMessageBox::question(this, tr("Close multiple subwindows?"), tr("Do you want to close all subwindows?"), QMessageBox::Yes | QMessageBox::No, QMessageBox::No);
        if(choice == QMessageBox::No) {
            event->ignore();
            return;
        }
    }

    mdiArea->closeAllSubWindows();
    if(mdiArea->currentSubWindow())
        event->ignore();
    else
        event->accept();
}