helpdialog.cpp

来自「奇趣公司比较新的qt/emd版本」· C++ 代码 · 共 1,320 行 · 第 1/3 页

        QFile file(*i);
        if (!file.exists()) {
            QMessageBox::warning(this, tr("Warning"),
                tr("Documentation file %1 does not exist!\n"
                    "Skipping file.").arg(QFileInfo(file).absoluteFilePath()));
            continue;
        }
        fileAges += QFileInfo(file).lastModified().toTime_t();
        DocuParser *handler = DocuParser::createParser(*i);
        bool ok = handler->parse(&file);
        file.close();
        if (!ok){
            QString msg = QString::fromLatin1("In file %1:\n%2")
                          .arg(QFileInfo(file).absoluteFilePath())
                          .arg(handler->errorProtocol());
            QMessageBox::critical(this, tr("Parse Error"), tr(msg.toUtf8()));
            delete handler;
            continue;
        }

        QList<IndexItem*> indLst = handler->getIndexItems();
        int counter = 0;
        foreach (IndexItem *indItem, indLst) {
            QFileInfo fi(indItem->reference);
            lst.append(IndexKeyword(indItem->keyword, indItem->reference));

            if (++counter%100 == 0) {
                if (ui.progressPrepare)
                    ui.progressPrepare->setValue(counter);
                processEvents();
                if (lwClosed) {
                    return;
                }
            }
        }
        delete handler;
    }
    if (!lst.isEmpty())
        qSort(lst);

    QFile indexout(cacheFilesPath + QDir::separator() + QLatin1String("indexdb40.")
		+ Config::configuration()->profileName());
    if (verifyDirectory(cacheFilesPath) && indexout.open(QFile::WriteOnly)) {
        QDataStream s(&indexout);
        s << fileAges;
        s << lst;
        indexout.close();
    }
}

void HelpDialog::setupTitleMap()
{
    if (titleMapDone)
        return;

    bool needRebuild = false;
    if (Config::configuration()->profileName() == QLatin1String("default")) {
        const QStringList docuFiles = Config::configuration()->docFiles();
        for (QStringList::ConstIterator it = docuFiles.begin(); it != docuFiles.end(); ++it) {
            if (!QFile::exists(*it)) {
                Config::configuration()->saveProfile(Profile::createDefaultProfile());
                Config::configuration()->loadDefaultProfile();
                needRebuild = true;
                break;
            }
        }
    }

    if (Config::configuration()->docRebuild() || needRebuild) {
        removeOldCacheFiles();
        Config::configuration()->setDocRebuild(false);
        Config::configuration()->saveProfile(Config::configuration()->profile());
    }
    if (contentList.isEmpty())
        getAllContents();

    titleMapDone = true;
    titleMap.clear();
    for (QList<QPair<QString, ContentList> >::Iterator it = contentList.begin(); it != contentList.end(); ++it) {
        ContentList lst = (*it).second;
        foreach (ContentItem item, lst) {
            titleMap[item.reference] = item.title.trimmed();
        }
    }
    processEvents();
}

void HelpDialog::getAllContents()
{
    QFile contentFile(cacheFilesPath + QDir::separator() + QLatin1String("contentdb40.")
		+ Config::configuration()->profileName());
    contentList.clear();
    if (!contentFile.open(QFile::ReadOnly)) {
        buildContentDict();
        return;
    }

    QDataStream ds(&contentFile);
    quint32 fileAges;
    ds >> fileAges;
    if (fileAges != getFileAges()) {
        contentFile.close();
        removeOldCacheFiles(true);
        buildContentDict();
        return;
    }
    QString key;
    QList<ContentItem> lst;
    while (!ds.atEnd()) {
        ds >> key;
        ds >> lst;
        contentList += qMakePair(key, QList<ContentItem>(lst));
    }
    contentFile.close();
    processEvents();

}

void HelpDialog::buildContentDict()
{
    QStringList docuFiles = Config::configuration()->docFiles();

    quint32 fileAges = 0;
    for (QStringList::iterator it = docuFiles.begin(); it != docuFiles.end(); ++it) {
        QFile file(*it);
        if (!file.exists()) {
            QMessageBox::warning(this, tr("Warning"),
            tr("Documentation file %1 does not exist!\n"
                "Skipping file.").arg(QFileInfo(file).absoluteFilePath()));
            continue;
        }
        fileAges += QFileInfo(file).lastModified().toTime_t();
        DocuParser *handler = DocuParser::createParser(*it);
        if (!handler) {
            QMessageBox::warning(this, tr("Warning"),
            tr("Documentation file %1 is not compatible!\n"
                "Skipping file.").arg(QFileInfo(file).absoluteFilePath()));
            continue;
        }
        bool ok = handler->parse(&file);
        file.close();
        if (ok) {
            contentList += qMakePair(*it, QList<ContentItem>(handler->getContentItems()));
            delete handler;
        } else {
            QString msg = QString::fromLatin1("In file %1:\n%2")
                          .arg(QFileInfo(file).absoluteFilePath())
                          .arg(handler->errorProtocol());
            QMessageBox::critical(this, tr("Parse Error"), tr(msg.toUtf8()));
            continue;
        }
    }

    QFile contentOut(cacheFilesPath + QDir::separator() + QLatin1String("contentdb40.")
		+ Config::configuration()->profileName());
    if (contentOut.open(QFile::WriteOnly)) {
        QDataStream s(&contentOut);
        s << fileAges;
        for (QList<QPair<QString, ContentList> >::Iterator it = contentList.begin(); it != contentList.end(); ++it) {
            s << *it;
        }
        contentOut.close();
    }
}

void HelpDialog::currentTabChanged(int index)
{
    QString s = ui.tabWidget->widget(index)->objectName();
    if (s == QLatin1String("indexPage"))
        QTimer::singleShot(0, this, SLOT(loadIndexFile()));
    else if (s == QLatin1String("bookmarkPage"))
        insertBookmarks();
    else if (s == QLatin1String("contentPage"))
        QTimer::singleShot(0, this, SLOT(insertContents()));
    else if (s == QLatin1String("searchPage"))
        QTimer::singleShot(0, this, SLOT(setupFullTextIndex()));
}

void HelpDialog::showInitDoneMessage()
{
    if (initDoneMsgShown)
        return;
    initDoneMsgShown = true;
    help->statusBar()->showMessage(tr("Done"), 3000);
}

void HelpDialog::showTopic(QTreeWidgetItem *item)
{
    if (item)
        showTopic();
}

void HelpDialog::showTopic()
{
    QString tabName = ui.tabWidget->currentWidget()->objectName();

    if (tabName == QLatin1String("indexPage"))
        showIndexTopic();
    else if (tabName == QLatin1String("bookmarkPage"))
        showBookmarkTopic();
    else if (tabName == QLatin1String("contentPage"))
        showContentsTopic();
}

void HelpDialog::showIndexTopic()
{
    int row = ui.listIndex->currentIndex().row();
    if (row == -1 || row >= indexModel->rowCount())
        return;

    QString description = indexModel->description(row);
    QStringList links = indexModel->links(row);

    bool blocked = ui.editIndex->blockSignals(true);
    ui.editIndex->setText(description);
    ui.editIndex->blockSignals(blocked);

    if (links.count() == 1) {
        emit showLink(links.first());
    } else {
        qSort(links);
        QStringList::Iterator it = links.begin();
        QStringList linkList;
        QStringList linkNames;
        for (; it != links.end(); ++it) {
            linkList << *it;
            linkNames << titleOfLink(*it);
        }
        QString link = TopicChooser::getLink(this, linkNames, linkList, description);
        if (!link.isEmpty())
            emit showLink(link);
    }

    ui.listIndex->setCurrentIndex(indexModel->index(indexModel->stringList().indexOf(description)));
    ui.listIndex->scrollTo(ui.listIndex->currentIndex(), QAbstractItemView::PositionAtTop);
}

void HelpDialog::searchInIndex(const QString &searchString)
{
    QRegExp atoz(QLatin1String("[A-Z]"));
    int matches = searchString.count(atoz);
    if (matches > 0 && !searchString.contains(QLatin1String(".*")))
    {
        int start = 0;
        QString newSearch;
        for (; matches > 0; --matches) {
            int match = searchString.indexOf(atoz, start+1);
            if (match <= start)
                continue;
            newSearch += searchString.mid(start, match-start);
            newSearch += QLatin1String(".*");
            start = match;
        }
        newSearch += searchString.mid(start);
        ui.listIndex->setCurrentIndex(indexModel->filter(newSearch, searchString));
    }
    else
        ui.listIndex->setCurrentIndex(indexModel->filter(searchString, searchString));
}

QString HelpDialog::titleOfLink(const QString &link)
{
    QString s = HelpDialog::removeAnchorFromLink(link);
    s = titleMap[s];
    if (s.isEmpty())
        return link;
    return s;
}

bool HelpDialog::eventFilter(QObject * o, QEvent * e)
{
    if (o == ui.editIndex && e->type() == QEvent::KeyPress) {
        switch (static_cast<QKeyEvent*>(e)->key()) {
            case Qt::Key_Up:
            case Qt::Key_Down:
            case Qt::Key_PageDown:
            case Qt::Key_PageUp:
                QApplication::sendEvent(ui.listIndex, e);
                break;

            default:
                break;
        }
    } else if (o == ui.listContents->viewport()) {
        if (e->type() == QEvent::MouseButtonRelease) {
            QMouseEvent *me = static_cast<QMouseEvent*>(e);
            if (me->button() == Qt::LeftButton) {
                QTreeWidgetItem *item = ui.listContents->itemAt(me->pos());
                QRect vRect = ui.listContents->visualItemRect(item);

                // only show topic if we clicked an item
                if (item && vRect.contains(me->pos()))
                    showTopic(item);
            }
        }
    }

    return QWidget::eventFilter(o, e);
}

void HelpDialog::addBookmark()
{
    if (!bookmarksInserted)
        insertBookmarks();
    QString link = help->browsers()->currentBrowser()->source().toString();
    QString title = help->browsers()->currentBrowser()->documentTitle();
    if (title.isEmpty())
        title = titleOfLink(link);

    QTreeWidgetItem *i = new QTreeWidgetItem(ui.listBookmarks, 0);
    i->setText(0, title);
    i->setData(0, LinkRole, link);
    ui.buttonRemove->setEnabled(true);
    saveBookmarks();
    help->updateBookmarkMenu();
}

void HelpDialog::on_buttonAdd_clicked()
{
    addBookmark();
}

void HelpDialog::on_buttonRemove_clicked()
{
    if (!ui.listBookmarks->currentItem())
        return;

    delete ui.listBookmarks->currentItem();
    saveBookmarks();
    if (ui.listBookmarks->topLevelItemCount() != 0) {
        ui.listBookmarks->setCurrentItem(ui.listBookmarks->topLevelItem(0));
    }
    ui.buttonRemove->setEnabled(ui.listBookmarks->topLevelItemCount() > 0);
    help->updateBookmarkMenu();
}

void HelpDialog::insertBookmarks()
{
    if (bookmarksInserted)
        return;
    bookmarksInserted = true;
    ui.listBookmarks->clear();
    QFile f(cacheFilesPath + QDir::separator() + QLatin1String("bookmarks.")
		+ Config::configuration()->profileName());
    if (!f.open(QFile::ReadOnly))
        return;
    QTextStream ts(&f);
    while (!ts.atEnd()) {
        QTreeWidgetItem *i = new QTreeWidgetItem(ui.listBookmarks, 0);
        i->setText(0, ts.readLine());
        i->setData(0, LinkRole, ts.readLine());
    }
    ui.buttonRemove->setEnabled(ui.listBookmarks->topLevelItemCount() > 0);
    help->updateBookmarkMenu();
    showInitDoneMessage();
}

void HelpDialog::showBookmarkTopic()
{
    if (!ui.listBookmarks->currentItem())
        return;

    QTreeWidgetItem *i = (QTreeWidgetItem*)ui.listBookmarks->currentItem();
    emit showLink(i->data(0, LinkRole).toString());
}

static void store(QTreeWidgetItem *i, QTextStream &ts)
{
    ts << i->text(0) << endl;
    ts << i->data(0, LinkRole).toString() << endl;

    for (int index = 0; index < i->childCount(); ++index)
        store(i->child(index), ts);
}

static void store(QTreeWidget *tw, QTextStream &ts)
{
    for (int index = 0; index < tw->topLevelItemCount(); ++index)
        store(tw->topLevelItem(index), ts);
}

void HelpDialog::saveBookmarks()
{
    QFile f(cacheFilesPath + QDir::separator() + QLatin1String("bookmarks.")
		+ Config::configuration()->profileName());
    if (!f.open(QFile::WriteOnly))
        return;

    QTextStream ts(&f);
    store(ui.listBookmarks, ts);
    f.close();
}

void HelpDialog::insertContents()
{
#ifdef Q_WS_MAC
    static const QLatin1String IconPath(":/trolltech/assistant/images/win/book.png");
#else
    static const QLatin1String IconPath(":/trolltech/assistant/images/win/book.png");
#endif
    if (contentsInserted)
        return;

    if (contentList.isEmpty())
        getAllContents();

    contentsInserted = true;
    ui.listContents->clear();
    setCursor(Qt::WaitCursor);
    if (!titleMapDone)
        setupTitleMap();

#if 0 // ### port me
    ui.listContents->setSorting(-1);
#endif

    for (QList<QPair<QString, ContentList> >::Iterator it = contentList.begin(); it != contentList.end(); ++it) {
        QTreeWidgetItem *newEntry;

        QTreeWidgetItem *contentEntry;
        QStack<QTreeWidgetItem*> stack;
        stack.clear();
        int depth = 0;
        bool root = false;

        QTreeWidgetItem *lastItem[64];
        for (int j = 0; j < 64; ++j)
            lastItem[j] = 0;

        ContentList lst = (*it).second;
        for (ContentList::ConstIterator it = lst.constBegin(); it != lst.constEnd(); ++it) {
            ContentItem item = *it;
            if (item.depth == 0) {
                newEntry = new QTreeWidgetItem(ui.listContents, 0);
                newEntry->setIcon(0, QIcon(IconPath));
                newEntry->setText(0, item.title);
                newEntry->setData(0, LinkRole, item.reference);
                stack.push(newEntry);
                depth = 1;
                root = true;