113 lines
3.5 KiB
C++
113 lines
3.5 KiB
C++
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#include "textBrowserWidget.h"
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TextBrowserWidget::TextBrowserWidget(const QString &xmlFile, QWidget *pWidget)
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: QWidget(pWidget)
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{
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setupUi(dynamic_cast<QWidget *>(this));
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connect( m_main, &QPushButton::clicked, this, &TextBrowserWidget::slotClickedMain );
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connect( m_next, &QPushButton::clicked, this, &TextBrowserWidget::slotClickedNext );
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connect( m_previous, &QPushButton::clicked, this, &TextBrowserWidget::slotClickedPrev );
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connect( m_textBrowser, &QTextBrowser::sourceChanged, this, &TextBrowserWidget::slotPageChanged );
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m_textBrowser->setOpenExternalLinks(true);
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unpack(xmlFile);
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}
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/*
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* HTML theory
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*/
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inline void TextBrowserWidget::slotPageChanged(const QUrl &url) {
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QString value = url.toString().section('/', -1);
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auto iterator = std::find_if(m_htmlPages.cbegin(), m_htmlPages.cend()
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, [value](const QString &other)->bool {
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return ( other.section('/', -1) == value );
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});
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if(iterator == m_htmlPages.cend()) {
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m_textBrowser->clear();
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return;
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}
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m_currentIndexPage = iterator - m_htmlPages.cbegin();
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bool isMainPage = (m_currentIndexPage == 0);
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m_main->setDisabled(isMainPage);
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m_previous->setEnabled( isMainPage ? false : m_currentIndexPage not_eq 1 );
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m_next->setEnabled( isMainPage ? false : m_currentIndexPage not_eq (m_htmlPages.size() - 1) );
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}
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inline bool TextBrowserWidget::unpack(const QString &xmlFileName) {
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QDomDocument xmlDocument;
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QFile xmlFile(xmlFileName);
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if(not xmlFile.open(QIODevice::ReadOnly)) {
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return false;
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}
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bool isSet = xmlDocument.setContent(&xmlFile);
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xmlFile.close();
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if(not isSet) {
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return false;
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}
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QDomElement infoNode = xmlDocument.firstChild().nextSiblingElement("info");
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QDomElement currentDirectoryElement = infoNode.firstChildElement("directory");
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QStringList searchPaths;
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while (not currentDirectoryElement.isNull()) {
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searchPaths.append(currentDirectoryElement.text());
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currentDirectoryElement = currentDirectoryElement.nextSiblingElement("directory");
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}
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QDomElement currentPage = infoNode.firstChildElement("order").firstChildElement("page");
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if(currentPage.isNull()) {
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return false;
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}
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QStringList result;
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QString currentTagName;
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bool isExists;
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while(not currentPage.isNull()) {
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currentTagName = currentPage.text();
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isExists = false;
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for(const QString &name : searchPaths) {
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if(QDir(name).exists(currentTagName)) {
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isExists = true;
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break;
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}
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}
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if(not isExists) {
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return false;
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}
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result.push_back(currentTagName);
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currentPage = currentPage.nextSiblingElement("page");
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}
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m_textBrowser->setSearchPaths(searchPaths);
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m_htmlPages = result;
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return setSourceMainPage();
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}
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inline void TextBrowserWidget::slotClickedMain() {
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if(m_currentIndexPage not_eq 0) {
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m_textBrowser->setSource(m_htmlPages.front());
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}
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}
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inline void TextBrowserWidget::slotClickedPrev() {
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if(m_currentIndexPage not_eq 1) {
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m_textBrowser->setSource(m_htmlPages[--m_currentIndexPage]);
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}
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}
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inline void TextBrowserWidget::slotClickedNext() {
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if(m_currentIndexPage not_eq (m_htmlPages.size() - 1)) {
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m_textBrowser->setSource(m_htmlPages[++m_currentIndexPage]);
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}
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}
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