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path: root/src/mainwindow/subwindow.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 "subwindow.h"
#include "browser.h"
#include "webengine/webprofile.h"
#include "webengine/webview.h"
#include "widgets/tabwidget.h"
#include <QAction>
#include <QJsonArray>
#include <QJsonDocument>
#include <QJsonObject>
#include <QMenu>
#include <QShortcut>
#include <QStyle>
#include <QToolButton>

SubWindow::SubWindow(const QHash<QString, QString> &config, QWidget *parent, Qt::WindowFlags flags)
    : QMdiSubWindow(parent, flags)
    , tabWidget(new TabWidget(this))
{
    // delete this window when it closes
    setAttribute(Qt::WA_DeleteOnClose, true);

    resize(800, 600);
    setWidget(tabWidget);

    profile = WebProfile::defaultProfile();

    // system menu
    {
        auto *menu = systemMenu();
        menu->addSeparator();

        auto *profileName_action = menu->addAction(tr("Profile: %1").arg(profile->name()));
        profileName_action->setEnabled(false);
        auto *loadProfile_menu = menu->addMenu(tr("Load profile"));

        Browser *browser = qobject_cast<Browser *>(qApp);
        Q_CHECK_PTR(browser);

        for(const QString &name : browser->profiles()) {
            auto *loadAction = loadProfile_menu->addAction(name);
            connect(loadAction, &QAction::triggered, this, [name, browser, profileName_action, this]() {
                auto *profile = browser->profile(name);
                this->setProfile(profile);
                profileName_action->setText(tr("Profile: %1").arg(name));
            });
        }

#ifdef QT_DEBUG
        menu->addSeparator();
        menu->addAction(tr("Debug menu"))->setEnabled(false);
        auto *saveSession_action = menu->addAction(tr("Save session"));
        menu->addAction(tr("Load session"))->setEnabled(false);
        setSystemMenu(menu);

        connect(saveSession_action, &QAction::triggered, [this]() {
            QJsonDocument doc(session());
            qDebug("%s", qUtf8Printable(doc.toJson()));
        });
#endif
    }

    // new tab button
    auto *newTab_button = new QToolButton(this);
    newTab_button->setIcon(style()->standardIcon(QStyle::SP_FileIcon));
    newTab_button->setToolTip(tr("Add tab"));
    newTab_button->setShortcut(QKeySequence(config.value("window.shortcuts.new")));
    connect(newTab_button, &QToolButton::clicked, this, [=]() {
        auto index = addTab(WebProfile::defaultProfile()->newtab());
        tabWidget->setCurrentIndex(index);
    });
    tabWidget->setCornerWidget(newTab_button, Qt::TopRightCorner);

    // general actions
    auto *closeTab_shortcut = new QShortcut(QKeySequence(config.value("window.shortcuts.close")), this);
    connect(closeTab_shortcut, &QShortcut::activated, this, [=]() {
        tabWidget->deleteTab(tabWidget->currentIndex());
    });

    auto *leftTab_shortcut = new QShortcut(QKeySequence(config.value("window.shortcuts.left")), this);
    connect(leftTab_shortcut, &QShortcut::activated, this, [=]() {
        tabWidget->setCurrentIndex(qMax(0, tabWidget->currentIndex() - 1));
    });

    auto *rightTab_shortcut = new QShortcut(QKeySequence(config.value("window.shortcuts.right")), this);
    connect(rightTab_shortcut, &QShortcut::activated, this, [=]() {
        tabWidget->setCurrentIndex(qMin(tabWidget->currentIndex() + 1, tabWidget->count() - 1));
    });

    connect(tabWidget, &TabWidget::currentChanged, [this](int index) {
        if(index < 0) {
            // last tab has been closed
            close();
        } else {
            auto *view = dynamic_cast<WebView *>(tabWidget->widget(index));
            Q_CHECK_PTR(view);

            disconnect(titleConnection);
            disconnect(linkHoveredConnection);

            titleConnection = connect(view, &WebView::titleChanged, this, [this](const QString &title) {
                auto *v = qobject_cast<WebView *>(sender());
                this->setWindowTitle(QString("%1 :%2").arg(title, v->profile()->name()));
            });
            setWindowTitle(QString("%1 :%2").arg(view->title(), view->profile()->name()));

            linkHoveredConnection = connect(view->page(), &WebPage::linkHovered, this, [this](const QString &url) {
                if(!url.isEmpty())
                    emit showStatusMessage(url, 3000);
            });

            emit currentViewChanged(view);
        }
    });
}

SubWindow::~SubWindow()
{
    delete tabWidget;
}

WebView *SubWindow::currentView()
{
    return qobject_cast<WebView *>(tabWidget->currentWidget());
}

WebView *SubWindow::view(int index) const
{
    return qobject_cast<WebView *>(tabWidget->widget(index));
}

void SubWindow::setProfile(WebProfile *profile)
{
    Q_CHECK_PTR(profile);
    this->profile = profile;
    for(int i = 0; i < tabWidget->count(); ++i) {
        auto *view = qobject_cast<WebView *>(tabWidget->widget(i));
        view->setProfile(profile);
    }
}

int SubWindow::addTab(const QUrl &url)
{
    auto *view = new WebView(profile, this);
    if(!url.isEmpty())
        view->load(url);
    return tabWidget->addTab(view);
}

void SubWindow::setCurrentTab(int index)
{
    tabWidget->setCurrentIndex(index);
}

QJsonObject SubWindow::session() const
{
    QJsonObject obj;
    obj.insert("profile", QJsonValue(""));

    QJsonArray tabs;
    for(int i = 0; i < tabWidget->count(); ++i) {
        auto *view = qobject_cast<WebView *>(tabWidget->widget(i));
        if(view) {
            tabs.append(view->url().toString());
        }
    }
    obj.insert("tabs", tabs);

    return obj;
}

void SubWindow::restoreSession(const QJsonObject &sessionData)
{
    auto *browser = qobject_cast<Browser *>(qApp);
    Q_CHECK_PTR(browser);

    Q_ASSERT_X(sessionData.value("profile") != QJsonValue::Undefined, "Window::restoreSession", "no profile in json");
    if(browser->profiles().contains(sessionData.value("profile").toString()))
        profile = browser->profile(sessionData.value("profile").toString());

    Q_ASSERT_X(sessionData.value("tabs") != QJsonValue::Undefined, "Window::restoreSession", "no tabs in json");
    const QJsonArray tabs = sessionData.value("tabs").toArray();

    if(tabs.count() == 0) {
        // open a newtab
        auto *view = new WebView(profile, this);
        view->load(profile->newtab());
        tabWidget->addTab(view);
        return;
    }

    for(const auto &tab : tabs) {
        auto *view = new WebView(profile, this);
        view->load(QUrl::fromUserInput(tab.toString()));
        tabWidget->addTab(view);
    }
}