add base: browser window, hints, history, cookies, adblock
This commit is contained in:
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#include "browserwindow.h"
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#include "adblock.h"
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#include "commandline.h"
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#include "hints.h"
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#include "statusbar.h"
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#include "urlutil.h"
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#include <QApplication>
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#include <QClipboard>
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#include <QEvent>
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#include <QKeyEvent>
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#include <QMouseEvent>
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#include <QVBoxLayout>
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#include <QWebEnginePage>
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#include <QWebEngineScript>
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#include <QWebEngineView>
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#include <QWidget>
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namespace {
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constexpr int kScrollStep = 60;
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constexpr double kZoomStep = 0.1;
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} // namespace
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BrowserWindow::BrowserWindow(QWebEngineProfile *profile, AdBlocker *adBlocker,
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const QUrl &startUrl, QWidget *parent)
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: QMainWindow(parent)
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, m_adBlocker(adBlocker)
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, m_view(new QWebEngineView(profile, this))
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, m_status(new StatusBar(this))
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, m_commandLine(new CommandLine(this))
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{
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setupUi();
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connectView();
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connect(m_commandLine, &CommandLine::commandEntered, this, [this](const QString &c) {
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setMode(Mode::Normal);
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runCommand(c);
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});
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connect(m_commandLine, &CommandLine::cancelled, this, [this] {
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setMode(Mode::Normal);
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});
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connect(m_adBlocker, &AdBlocker::message, m_status, &StatusBar::showMessage);
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qApp->installEventFilter(this);
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setMode(Mode::Normal);
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m_view->setUrl(startUrl);
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focusView();
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}
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void BrowserWindow::setupUi()
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{
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setWindowTitle(QStringLiteral("att"));
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resize(1280, 800);
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auto *central = new QWidget(this);
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auto *layout = new QVBoxLayout(central);
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layout->setContentsMargins(0, 0, 0, 0);
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layout->setSpacing(0);
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layout->addWidget(m_view, 1);
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layout->addWidget(m_status);
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layout->addWidget(m_commandLine);
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setCentralWidget(central);
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m_commandLine->hide();
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}
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void BrowserWindow::connectView()
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{
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connect(m_view, &QWebEngineView::urlChanged, this, [this](const QUrl &url) {
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m_status->setUrl(url.toDisplayString());
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// The hints belong to the page that is going away.
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if (m_mode == Mode::Hint)
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setMode(Mode::Normal);
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});
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connect(m_view, &QWebEngineView::loadProgress, m_status, &StatusBar::setProgress);
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connect(m_view, &QWebEngineView::titleChanged, this, [this](const QString &title) {
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setWindowTitle(title.isEmpty() ? QStringLiteral("att")
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: QStringLiteral("%1 - att").arg(title));
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});
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connect(m_view, &QWebEngineView::loadFinished, this, [this](bool ok) {
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m_status->setProgress(100);
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if (!ok)
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m_status->showMessage(QStringLiteral("Failed to load page"), true);
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});
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}
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void BrowserWindow::setMode(Mode mode)
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{
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if (m_mode == Mode::Hint && mode != Mode::Hint)
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runHintScript(hints::clearScript());
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m_mode = mode;
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m_pendingKeys.clear();
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switch (mode) {
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case Mode::Normal:
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m_status->setMode(QString());
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m_status->show();
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focusView();
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break;
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case Mode::Insert:
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m_status->setMode(QStringLiteral("insert"));
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m_status->show();
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focusView();
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break;
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case Mode::Command:
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m_status->hide();
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break;
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case Mode::Hint:
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m_status->setMode(QStringLiteral("hint"));
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m_status->show();
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break;
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}
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}
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bool BrowserWindow::eventFilter(QObject *watched, QEvent *event)
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{
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if (event->type() != QEvent::KeyPress || !isAncestorOf(qobject_cast<QWidget *>(watched)))
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return QMainWindow::eventFilter(watched, event);
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auto *key = static_cast<QKeyEvent *>(event);
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if (m_mode == Mode::Command)
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return QMainWindow::eventFilter(watched, event);
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if (key->key() == Qt::Key_Escape
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|| (key->key() == Qt::Key_BracketLeft && key->modifiers() == Qt::ControlModifier)) {
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setMode(Mode::Normal);
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return true;
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}
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if (m_mode == Mode::Insert)
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return QMainWindow::eventFilter(watched, event);
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if (m_mode == Mode::Hint) {
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handleHintModeKey(key);
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return true;
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}
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if (handleNormalModeKey(key))
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return true;
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return QMainWindow::eventFilter(watched, event);
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}
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bool BrowserWindow::handleNormalModeKey(QKeyEvent *event)
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{
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const QString text = event->text();
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const Qt::KeyboardModifiers mods = event->modifiers();
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if (mods.testFlag(Qt::ControlModifier)) {
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switch (event->key()) {
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case Qt::Key_D:
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scrollPages(0.5);
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return true;
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case Qt::Key_U:
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scrollPages(-0.5);
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return true;
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case Qt::Key_F:
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scrollPages(1.0);
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return true;
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case Qt::Key_B:
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scrollPages(-1.0);
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return true;
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default:
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return false;
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}
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}
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if (mods.testFlag(Qt::AltModifier) || mods.testFlag(Qt::MetaModifier))
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return false;
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// Two-key sequences starting with "g".
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if (!m_pendingKeys.isEmpty()) {
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const QString sequence = m_pendingKeys + text;
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m_pendingKeys.clear();
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if (sequence == QLatin1String("gg")) {
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scrollToEnd(false);
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return true;
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}
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return true; // Swallow the unknown sequence rather than leaking it.
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}
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if (text == QLatin1String("g")) {
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m_pendingKeys = text;
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return true;
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}
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if (text == QLatin1String("o")) {
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m_commandLine->openWith(QStringLiteral(":open "));
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setMode(Mode::Command);
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return true;
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}
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if (text == QLatin1String("O")) {
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// Edit the current URL.
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m_commandLine->openWith(QStringLiteral(":open ") + m_view->url().toString());
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setMode(Mode::Command);
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return true;
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}
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if (text == QLatin1String(":")) {
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m_commandLine->openWith(QStringLiteral(":"));
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setMode(Mode::Command);
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return true;
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}
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if (text == QLatin1String("i")) {
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setMode(Mode::Insert);
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return true;
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}
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if (text == QLatin1String("f")) {
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startHints();
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return true;
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}
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if (text == QLatin1String("r")) {
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m_view->reload();
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return true;
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}
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if (text == QLatin1String("R")) {
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m_view->triggerPageAction(QWebEnginePage::ReloadAndBypassCache);
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return true;
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}
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if (text == QLatin1String("H")) {
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m_view->back();
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return true;
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}
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if (text == QLatin1String("L")) {
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m_view->forward();
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return true;
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}
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if (text == QLatin1String("j")) {
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scrollBy(0, kScrollStep);
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return true;
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}
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if (text == QLatin1String("k")) {
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scrollBy(0, -kScrollStep);
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return true;
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}
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if (text == QLatin1String("h")) {
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scrollBy(-kScrollStep, 0);
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return true;
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}
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if (text == QLatin1String("l")) {
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scrollBy(kScrollStep, 0);
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return true;
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}
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if (text == QLatin1String("G")) {
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scrollToEnd(true);
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return true;
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}
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if (text == QLatin1String("y")) {
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const QString url = m_view->url().toString();
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qApp->clipboard()->setText(url);
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m_status->showMessage(QStringLiteral("Yanked %1").arg(url));
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return true;
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}
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if (text == QLatin1String("+")) {
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m_view->setZoomFactor(m_view->zoomFactor() + kZoomStep);
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return true;
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}
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if (text == QLatin1String("-")) {
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m_view->setZoomFactor(qMax(0.25, m_view->zoomFactor() - kZoomStep));
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return true;
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}
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if (text == QLatin1String("=")) {
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m_view->setZoomFactor(1.0);
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return true;
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}
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return false;
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}
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void BrowserWindow::handleHintModeKey(QKeyEvent *event)
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{
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if (event->key() == Qt::Key_Backspace) {
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runHintScript(hints::backspaceScript());
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return;
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}
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const QString text = event->text().toLower();
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if (text.size() == 1 && hints::chars().contains(text))
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runHintScript(hints::keyScript(text.at(0)));
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// Anything else is swallowed, so a stray key can't trigger a page shortcut.
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}
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void BrowserWindow::startHints()
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{
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setMode(Mode::Hint);
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runHintScript(hints::showScript());
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}
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void BrowserWindow::runHintScript(const QString &script)
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{
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m_view->page()->runJavaScript(script, QWebEngineScript::ApplicationWorld,
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[this](const QVariant &result) {
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handleHintResult(result.toMap());
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});
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}
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void BrowserWindow::handleHintResult(const QVariantMap &result)
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{
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// Results can arrive after the user already left hint mode, e.g. a key that
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// was still in flight when Escape was pressed.
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if (m_mode != Mode::Hint)
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return;
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const QString state = result.value(QStringLiteral("state")).toString();
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if (state == QLatin1String("shown")) {
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if (result.value(QStringLiteral("count")).toInt() == 0) {
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setMode(Mode::Normal);
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m_status->showMessage(QStringLiteral("No elements found"), true);
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}
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} else if (state == QLatin1String("follow")) {
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const QPointF pos(result.value(QStringLiteral("x")).toDouble(),
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result.value(QStringLiteral("y")).toDouble());
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setMode(Mode::Normal);
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clickAt(pos * m_view->zoomFactor());
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if (result.value(QStringLiteral("editable")).toBool())
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setMode(Mode::Insert);
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} else if (state == QLatin1String("gone")) {
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setMode(Mode::Normal);
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m_status->showMessage(QStringLiteral("Element went away"), true);
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} else if (state == QLatin1String("none") || state.isEmpty()) {
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// The script failed, or the page navigated and took the hints with it.
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setMode(Mode::Normal);
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}
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}
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void BrowserWindow::clickAt(const QPointF &pos)
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{
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// A real mouse click rather than element.click(): plenty of sites only
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// listen for mousedown/pointerdown, and it gives the page a trusted event.
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QWidget *target = m_view->focusProxy();
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if (!target)
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return;
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const QPointF global = target->mapToGlobal(pos);
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QMouseEvent press(QEvent::MouseButtonPress, pos, global, Qt::LeftButton,
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Qt::LeftButton, Qt::NoModifier);
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QMouseEvent release(QEvent::MouseButtonRelease, pos, global, Qt::LeftButton,
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Qt::NoButton, Qt::NoModifier);
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QCoreApplication::sendEvent(target, &press);
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QCoreApplication::sendEvent(target, &release);
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}
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void BrowserWindow::runCommand(const QString &command)
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{
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const QString name = command.section(QLatin1Char(' '), 0, 0);
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const QString args = command.section(QLatin1Char(' '), 1).trimmed();
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if (name == QLatin1String("open") || name == QLatin1String("o")) {
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openUrl(args);
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} else if (name == QLatin1String("quit") || name == QLatin1String("q")) {
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close();
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} else if (name == QLatin1String("reload")) {
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m_view->reload();
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} else if (name == QLatin1String("back")) {
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m_view->back();
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} else if (name == QLatin1String("forward")) {
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m_view->forward();
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} else if (name == QLatin1String("stop")) {
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m_view->stop();
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} else if (name == QLatin1String("adblock-update")) {
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m_adBlocker->update();
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} else if (name == QLatin1String("adblock-toggle")) {
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m_adBlocker->setEnabled(!m_adBlocker->isEnabled());
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m_status->showMessage(m_adBlocker->isEnabled() ? QStringLiteral("Adblock enabled")
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: QStringLiteral("Adblock disabled"));
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} else {
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m_status->showMessage(QStringLiteral("Unknown command: %1").arg(name), true);
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}
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}
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void BrowserWindow::openUrl(const QString &input)
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{
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const QUrl url = urlutil::fromUserInput(input);
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if (!url.isValid() || url.isEmpty()) {
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m_status->showMessage(QStringLiteral("Invalid URL: %1").arg(input), true);
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return;
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}
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m_view->setUrl(url);
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focusView();
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}
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void BrowserWindow::scrollBy(int dx, int dy)
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{
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m_view->page()->runJavaScript(
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QStringLiteral("window.scrollBy(%1, %2);").arg(dx).arg(dy));
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}
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void BrowserWindow::scrollPages(double factor)
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{
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m_view->page()->runJavaScript(
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QStringLiteral("window.scrollBy(0, window.innerHeight * %1);").arg(factor));
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}
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void BrowserWindow::scrollToEnd(bool bottom)
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{
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m_view->page()->runJavaScript(
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bottom ? QStringLiteral("window.scrollTo(0, document.body.scrollHeight);")
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: QStringLiteral("window.scrollTo(0, 0);"));
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}
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void BrowserWindow::focusView()
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{
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m_view->setFocus(Qt::OtherFocusReason);
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}
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Reference in New Issue
Block a user