File indexing completed on 2023-05-30 10:42:10

 /*
     This file is part of Kiten, a KDE Japanese Reference Tool...
     SPDX-FileCopyrightText: 2001 Jason Katz-Brown <jason@katzbrown.com>
     SPDX-FileCopyrightText: 2005 Paul Temple <paul.temple@gmx.net>
     SPDX-FileCopyrightText: 2006 Joseph Kerian <jkerian@gmail.com>
     SPDX-FileCopyrightText: 2006 Eric Kjeldergaard <kjelderg@gmail.com>
     SPDX-FileCopyrightText: 2011 Daniel E. Moctezuma <democtezuma@gmail.com>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "kiten.h"
 
 #include <KActionCollection>
 #include <KConfig>
 #include <KConfigGui>
 #include <KEditToolBar>
 #include <KLocalizedString>
 #include <KProcess>
 #include <KShortcutsDialog>
 #include <KStandardAction>
 #include <KStandardGuiItem>
 #include <KStatusNotifierItem>
 #include <KToggleAction>
 #include <KXMLGUIFactory>
 
 #include <QAction>
 #include <QApplication>
 #include <QClipboard>
 #include <QDockWidget>
 #include <QFile>
 #include <QList>
 #include <QPair>
 #include <QScrollBar>
 #include <QStandardPaths>
 #include <QStatusBar>
 #include <QTimer>
 #include <QVBoxLayout>
 
 #include "configuredialog.h"
 #include "dictionaryupdatemanager.h"
 #include "entrylist.h"
 #include "entrylistmodel.h"
 #include "entrylistview.h"
 #include "kitenconfig.h"
 #include "resultsview.h"
 #include "searchstringinput.h"
 /* Separating Learn */
 // #include "learn.h"
 
 Kiten::Kiten(QWidget *parent, const char *name)
     : KXmlGuiWindow(parent)
     , _lastQuery(DictQuery())
     , _radselect_proc(new KProcess(this))
     , _kanjibrowser_proc(new KProcess(this))
 {
     _radselect_proc->setProgram(QStandardPaths::findExecutable(QStringLiteral("kitenradselect")));
     _kanjibrowser_proc->setProgram(QStandardPaths::findExecutable(QStringLiteral("kitenkanjibrowser")));
     setStandardToolBarMenuEnabled(true);
     setObjectName(QLatin1String(name));
 
     /* Set up the config */
     _config = KitenConfigSkeleton::self();
     _config->load();
 
     /* ResultsView is our main widget, displaying the results of a search */
     _mainView = new ResultsView(this, "mainView");
 
     /* Create the export list */
     //  setupExportListDock();
 
     /* TODO: have a look at this idea
     detachedView = new ResultsView( NULL, "detachedView" );
     */
 
     setCentralWidget(_mainView);
 
     setupActions();
     // Be sure to create this manager before creating the GUI
     // as it needs to add a KAction to it.
     _dictionaryUpdateManager = new DictionaryUpdateManager(this);
 
     createGUI();
 
     _statusBar = statusBar();
     _optionDialog = nullptr;
 
     /* Start the system tray icon. */
     _sysTrayIcon = new KStatusNotifierItem(this);
     _sysTrayIcon->setStandardActionsEnabled(true);
     _sysTrayIcon->setAssociatedWidget(this);
     _sysTrayIcon->setIconByName(QStringLiteral("kiten"));
     _sysTrayIcon->setStatus(KStatusNotifierItem::Active);
 
     /* Set things as they were (as told in the config) */
     _autoSearchToggle->setChecked(_config->autosearch());
     _inputManager->setDefaultsFromConfig();
     updateConfiguration();
     applyMainWindowSettings(KSharedConfig::openConfig()->group("kitenWindow"));
 
     /* What happens when links are clicked or things are selected in the clipboard */
     connect(_mainView, &ResultsView::urlClicked, this, &Kiten::searchText);
     connect(QApplication::clipboard(), &QClipboard::selectionChanged, this, &Kiten::searchClipboard);
     connect(_inputManager, &SearchStringInput::search, this, &Kiten::searchFromEdit);
 
     connect(_mainView->verticalScrollBar(), &QAbstractSlider::valueChanged, this, &Kiten::setCurrentScrollValue);
     /* We need to know when to reload our dictionaries if the user updated them. */
     connect(_dictionaryUpdateManager, &DictionaryUpdateManager::updateFinished, this, &Kiten::loadDictionaries);
 
     /* See below for what else needs to be done */
     QTimer::singleShot(10, this, &Kiten::finishInit);
 }
 
 // Destructor to clean up the little bits
 Kiten::~Kiten()
 {
     if (_radselect_proc->state() != QProcess::NotRunning) {
         _radselect_proc->kill();
     }
     if (_kanjibrowser_proc->state() != QProcess::NotRunning) {
         _kanjibrowser_proc->kill();
     }
     _dictionaryManager.removeAllDictionaries();
     delete _optionDialog;
     _optionDialog = nullptr;
 }
 
 KitenConfigSkeleton *Kiten::getConfig()
 {
     return _config;
 }
 
 void Kiten::setupActions()
 {
     /* Add the basic quit/print/prefs actions, use the gui factory for keybindings */
     (void)KStandardAction::quit(this, SLOT(close()), actionCollection());
     // Why the heck is KSA:print adding it's own toolbar!?
     //  (void) KStandardAction::print(this, SLOT(print()), actionCollection());
     (void)KStandardAction::preferences(this, SLOT(slotConfigure()), actionCollection());
     // old style cast seems needed here, (const QObject*)
     KStandardAction::keyBindings(guiFactory(), &KXMLGUIFactory::showConfigureShortcutsDialog, actionCollection());
 
     /* Setup the Go-to-learn-mode actions */
     /* TODO: put back when Dictionary Editor is reorganised */
     //  (void) new KAction(   i18n( "&Dictionary Editor..." )
     //                             , "document-properties"
     //                             , 0
     //                             , this
     //                             , SLOT(createEEdit())
     //                             , actionCollection()
     //                             , "dict_editor");
     QAction *radselect = actionCollection()->addAction(QStringLiteral("radselect"));
     radselect->setText(i18n("Radical Selector"));
     //  radselect->setIcon( "edit-find" );
     actionCollection()->setDefaultShortcut(radselect, Qt::CTRL + Qt::Key_R);
     connect(radselect, &QAction::triggered, this, &Kiten::radicalSearch);
 
     QAction *kanjibrowser = actionCollection()->addAction(QStringLiteral("kanjibrowser"));
     kanjibrowser->setText(i18n("Kanji Browser"));
     actionCollection()->setDefaultShortcut(kanjibrowser, Qt::CTRL + Qt::Key_K);
     connect(kanjibrowser, &QAction::triggered, this, &Kiten::kanjiBrowserSearch);
 
     /* Setup the Search Actions and our custom Edit Box */
     _inputManager = new SearchStringInput(this);
 
     QAction *searchButton = actionCollection()->addAction(QStringLiteral("search"));
     searchButton->setText(i18n("S&earch"));
     // Set the search button to search
     connect(searchButton, &QAction::triggered, this, &Kiten::searchFromEdit);
     searchButton->setIcon(KStandardGuiItem::find().icon());
 
     // That's not it, that's "find as you type"...
     //   connect( Edit, SIGNAL(completion(QString)),
     //            this,   SLOT(searchFromEdit()) );
 
     /* Setup our widgets that handle preferences */
     //   deinfCB = new KToggleAction(   i18n( "&Deinflect Verbs in Regular Search" )
     //                                 , 0
     //                                 , this
     //                                 , SLOT(kanjiDictChange())
     //                                 , actionCollection()
     //                                 , "deinf_toggle" );
 
     _autoSearchToggle = actionCollection()->add<KToggleAction>(QStringLiteral("autosearch_toggle"));
     _autoSearchToggle->setText(i18n("&Automatically Search Clipboard Selections"));
 
     _irAction = actionCollection()->add<QAction>(QStringLiteral("search_in_results"));
     _irAction->setText(i18n("Search &in Results"));
     connect(_irAction, &QAction::triggered, this, &Kiten::searchInResults);
 
     QAction *actionFocusResultsView;
     actionFocusResultsView = actionCollection()->addAction(QStringLiteral("focusresultview"), this, SLOT(focusResultsView()));
     actionCollection()->setDefaultShortcut(actionFocusResultsView, Qt::Key_Escape);
     actionFocusResultsView->setText(i18n("Focus result view"));
 
     (void)KStandardAction::configureToolbars(this, SLOT(configureToolBars()), actionCollection());
 
     // TODO: this should probably be a standard action
     /*
     globalShortcutsAction = actionCollection()->addAction( "options_configure_global_keybinding" );
     globalShortcutsAction->setText( i18n( "Configure &Global Shortcuts..." ) );
     connect( globalShortcutsAction, SIGNAL(triggered()), this, SLOT(configureGlobalKeys()) );
     */
 
     // TODO: implement this
     //_globalSearchAction = actionCollection()->add<KToggleAction>( "search_on_the_spot" );
     //_globalSearchAction->setText( i18n( "On The Spo&t Search" ) );
     // KAction *temp = qobject_cast<KAction*>( _globalSearchAction );
     // KShortcut shrt( "Ctrl+Alt+S" );
     // globalSearchAction->setGlobalShortcut(shrt);  //FIXME: Why does this take ~50 seconds to return!?
     // connect(globalSearchAction, SIGNAL(triggered()), this, SLOT(searchOnTheSpot()));
 
     _backAction = KStandardAction::back(this, SLOT(back()), actionCollection());
     _forwardAction = KStandardAction::forward(this, SLOT(forward()), actionCollection());
     _backAction->setEnabled(false);
     _forwardAction->setEnabled(false);
 }
 
 void Kiten::setupExportListDock()
 {
     _exportListDock = new QDockWidget(i18n("Export List"), this);
     _exportListDockContents = new QWidget(_exportListDock);
     _exportListDock->setWidget(_exportListDockContents);
     addDockWidget(Qt::RightDockWidgetArea, _exportListDock);
 
     QVBoxLayout *layout = new QVBoxLayout(_exportListDockContents);
     _exportListDockContents->setLayout(layout);
 
     _exportList = new EntryListView(_exportListDockContents);
 
     layout->addWidget(_exportList);
 
     _exportList->setModel(new EntryListModel(EntryList()));
 }
 
 void Kiten::addExportListEntry(int index)
 {
     EntryListModel *model = qobject_cast<EntryListModel *>(_exportList->model());
     if (!model)
         return;
 
     EntryList list = model->entryList();
 
     list << _historyList.current()->at(index)->clone();
     model->setEntryList(list);
 }
 
 // This is the latter part of the initialization
 void Kiten::finishInit()
 {
     _statusBar->showMessage(i18n("Initializing Dictionaries"));
 
     // if it's the application's first time starting,
     // the app group won't exist and we show demo
     if (_config->initialSearch()) {
         if (KConfigGui::hasSessionConfig() && !KConfigGui::sessionConfig()->hasGroup("app")) {
             searchTextAndRaise(QStringLiteral("辞書"));
             // Note to future tinkerers... DO NOT EDIT OR TRANSLATE THAT
             // it's an embedded unicode search string to find "dictionary" in japanese
         }
     }
 
     _inputManager->focusInput();
     _statusBar->showMessage(i18n("Welcome to Kiten"));
     setCaption(QString());
 }
 
 void Kiten::focusResultsView()
 {
     _mainView->verticalScrollBar()->setFocus();
 }
 
 // This function is run on program window close.
 // It saves the settings in the config.
 bool Kiten::queryClose()
 {
     _config->setAutosearch(_autoSearchToggle->isChecked());
     _config->save();
 
     KConfigGroup configGroup = KSharedConfig::openConfig()->group("kitenWindow");
     saveMainWindowSettings(configGroup);
     return true;
 }
 
 //////////////////////////////////////////////////////////////////////////////
 // SEARCHING METHODS
 //////////////////////////////////////////////////////////////////////////////
 
 /**
  * This function searches for the contents of the Edit field in the mainwindow.
  * Any gui choices will also be included here.
  */
 void Kiten::searchFromEdit()
 {
     qDebug() << "SEARCH FROM EDIT CALLED";
     DictQuery query = _inputManager->getSearchQuery();
     if (query != _lastQuery) {
         _lastQuery = query;
         searchAndDisplay(query);
     }
 }
 
 /**
  * This function is called when a kanji is clicked in the result view
  * or any other time in which we want to search for something that didn't
  * come from the input box.
  */
 void Kiten::searchText(const QString &text)
 {
     searchAndDisplay(DictQuery(text));
 }
 
 /**
  * This should change the Edit text to be appropriate and then begin a search
  * of the dictionaries' entries.
  */
 void Kiten::searchTextAndRaise(const QString &str)
 {
     /* Do the search */
     searchText(str);
     /* get the window as we'd like it */
     raise();
 }
 
 /**
  * This function will search things as they are put in the clipboard.
  * It checks each time to see if the autoSearchToggle is set.
  * This function searches for the contents of the clipboard
  * filter out long selections and selections that are contained in our
  * current search (alleviates problem where research occurs because of
  * X's auto-add-to-clipboard-on-select feature.
  */
 void Kiten::searchClipboard()
 {
     if (_autoSearchToggle->isChecked()) {
         QString clipboard = QApplication::clipboard()->text(QClipboard::Selection).simplified();
 
         // Only search if the clipboard selection was less than 20 characters wide
         if (clipboard.length() < 20) {
             DictQuery potentialQuery(clipboard);
             // Make sure that we're not looking for a substring of the current string (needed?)
             if (!(potentialQuery < _inputManager->getSearchQuery())) {
                 searchTextAndRaise(clipboard);
             }
 
             qDebug() << "Clipboard item is a substring (rejected)";
         } else {
             qDebug() << "Clipboard entry too long";
         }
     }
 }
 
 /**
  * This method performs the search and displays
  * the result to the screen.
  */
 void Kiten::searchAndDisplay(const DictQuery &query)
 {
     /* keep the user informed of what we are doing */
     _statusBar->showMessage(i18n("Searching..."));
 
     /* This gorgeous incantation is all that's necessary to fill a DictQuery
       with a query and an Entrylist with all of the results form all of the
       requested dictionaries */
     EntryList *results = _dictionaryManager.doSearch(query);
 
     /* if there are no results */
     if (results->size() == 0) // TODO: check here if the user actually prefers this
     {
         // create a modifiable copy of the original query
         DictQuery newQuery(query);
 
         bool tryAgain = false;
 
         do {
             // by default we don't try again
             tryAgain = false;
 
             // but if the matchtype is changed we try again
             if (newQuery.getMatchType() == DictQuery::Exact) {
                 newQuery.setMatchType(DictQuery::Beginning);
                 tryAgain = true;
             } else if (newQuery.getMatchType() == DictQuery::Beginning) {
                 newQuery.setMatchType(DictQuery::Anywhere);
                 tryAgain = true;
             }
 
             // try another search
             if (tryAgain) {
                 delete results;
                 results = _dictionaryManager.doSearch(newQuery);
 
                 // results means all is ok; don't try again
                 if (results->size() > 0) {
                     tryAgain = false;
                 }
             }
         } while (tryAgain);
     }
 
     /* synchronize the history (and store this pointer there) */
     addHistory(results);
 
     /* Add the current search to our drop down list */
     _inputManager->setSearchQuery(results->getQuery());
 
     /* suppose it's about time to show the users the results. */
     displayResults(results);
 }
 
 /**
  * Search in the previous results, identical to
  * searchAndDisplay except for the one call.
  */
 void Kiten::searchInResults()
 {
     _statusBar->showMessage(i18n("Searching..."));
 
     DictQuery searchQuery = _inputManager->getSearchQuery();
     EntryList *results = _dictionaryManager.doSearchInList(searchQuery, _historyList.current());
 
     addHistory(results);
     _inputManager->setSearchQuery(searchQuery);
     displayResults(results);
 }
 
 /**
  * Given a set of Search Results items, this function does all that's needed
  * to put the interface into an appropriate state for those searchResults.
  */
 void Kiten::displayResults(EntryList *results)
 {
     QString infoStr;
     /* synchronize the statusbar */
     if (results->count() > 0) {
         infoStr = i18np("Found 1 result", "Found %1 results", results->count());
     } else {
         infoStr = i18n("No results found");
     }
     _statusBar->showMessage(infoStr);
     setCaption(infoStr);
 
     /* sort the results */
     /* synchronize the results window */
     if (results->count() > 0) {
         QStringList dictSort;
         QStringList fieldSort = _config->field_sortlist();
         if (_config->dictionary_enable() == QLatin1String("true")) {
             dictSort = _config->dictionary_sortlist();
         }
         results->sort(fieldSort, dictSort);
         _mainView->setContents(results->toHTML());
     } else {
         _mainView->setContents("<html><body>" + infoStr + "</body></html>");
     }
 
     _mainView->setLaterScrollValue(results->scrollValue());
 
     /* //Debuggery: to print the html results to file:
     QFile file( "/tmp/lala" );
     file.open( QIODevice::WriteOnly );
     file.write( results->toHTML().toUtf8() );
     file.close();
     */
 }
 
 /*
 void Kiten::searchOnTheSpot()
 {
   qDebug() << "On the spot search!\n";
 }
 */
 
 void Kiten::radicalSearch()
 {
     // Radselect is a KUniqueApplication, so we don't
     // need to worry about opening more than one copy
     _radselect_proc->start();
 }
 
 void Kiten::kanjiBrowserSearch()
 {
     // KanjiBrowser is a KUniqueApplication, so we don't
     // need to worry about opening more than one copy
     _kanjibrowser_proc->start();
 }
 
 //////////////////////////////////////////////////////////////////////////////
 // PREFERENCES RELATED METHODS
 //////////////////////////////////////////////////////////////////////////////
 void Kiten::slotConfigure()
 {
     // If the settings dialog is open and obscured/hidden/cached, show it
     if (ConfigureDialog::showDialog(QStringLiteral("settings"))) {
         return;
     }
 
     // ConfigureDialog didn't find an instance of this dialog, so lets create it :
     _optionDialog = new ConfigureDialog(this, _config);
     connect(_optionDialog, SIGNAL(hidden()), this, SLOT(slotConfigureHide()));
     connect(_optionDialog, &ConfigureDialog::settingsChanged, this, &Kiten::updateConfiguration);
 
     _optionDialog->show();
 }
 
 /**
  * This function just queues up slotConfigureDestroy() to get around the
  * SIGSEGV if you try to delete yourself if you are in the stack.
  */
 void Kiten::slotConfigureHide()
 {
     QTimer::singleShot(0, this, &Kiten::slotConfigureDestroy);
 }
 
 /**
  * This function actually tears down the optionDialog
  */
 void Kiten::slotConfigureDestroy()
 {
     if (_optionDialog != nullptr && _optionDialog->isVisible() == 0) {
         delete _optionDialog;
         _optionDialog = nullptr;
     }
 }
 
 /* TODO: reimplement something very much like this
 void Kiten::createEEdit()
 {
   eEdit *_eEdit = new eEdit( PERSONALDictionaryLocation( "data" ), this );
   _eEdit->show();
 }
 */
 
 void Kiten::configureToolBars()
 {
     KConfigGroup configGroup = KSharedConfig::openConfig()->group("kitenWindow");
     saveMainWindowSettings(configGroup);
     KEditToolBar dlg(actionCollection());
     connect(&dlg, &KEditToolBar::newToolBarConfig, this, &Kiten::newToolBarConfig);
     dlg.exec();
 }
 
 void Kiten::newToolBarConfig()
 {
     createGUI(QStringLiteral("kitenui.rc"));
     KConfigGroup configGroup = KSharedConfig::openConfig()->group("kitenWindow");
     applyMainWindowSettings(configGroup);
 }
 
 /** Opens the dialog for configuring the global accelerator keys. */
 void Kiten::configureGlobalKeys()
 {
     KShortcutsDialog::showDialog(actionCollection(), KShortcutsEditor::LetterShortcutsAllowed, this);
 }
 
 /**
  * This function, as the name says, updates the configuration file.
  * It should be called in EVERY case where the configuration files change.
  */
 void Kiten::updateConfiguration()
 {
     loadDictionaries();
 
     // Update the HTML/CSS for our fonts
     displayHistoryItem();
 
     _inputManager->updateFontFromConfig();
 
     // Reset the content of the last query. This is because in case the user adds
     // new dictionaries and wants to execute the same last search, the output
     // will contain results of the new dictionary/dictionaries added.
     _lastQuery = DictQuery();
 
     /*: TODO: have a look at this as well
     detachedView->updateFont();
     */
 }
 
 /**
  * Loads the dictionaries, their settings and updates general
  * options for the display manager.
  */
 void Kiten::loadDictionaries()
 {
     // Avoid duplicates (this makes it easy when we need to reload the dictionaries).
     _dictionaryManager.removeAllDictionaries();
 
     // Load the dictionaries of each type that we can adjust in prefs
     foreach (const QString &it, _config->dictionary_list()) {
         loadDictConfig(it);
     }
 
     // Load settings for each dictionary type
     foreach (const QString &it, _dictionaryManager.listDictFileTypes()) {
         _dictionaryManager.loadDictSettings(it, _config);
     }
 
     // Update general options for the display manager (sorting by dict, etc)
     _dictionaryManager.loadSettings(*_config->config());
     qDebug() << "Dictionaries loaded!";
 }
 
 /**
  * This function loads the dictionaries from the config file for the program
  * to use via the dictionaryManager object.
  */
 void Kiten::loadDictConfig(const QString &dictType)
 {
     KConfigGroup group = _config->config()->group("dicts_" + dictType.toLower());
 
     // A list of QPair's Name->Path
     QList<QPair<QString, QString>> dictionariesToLoad;
 
     // If we need to load the global
     if (group.readEntry("__useGlobal", true)) {
         QString dictionary = QStandardPaths::locate(QStandardPaths::GenericDataLocation, QStringLiteral("kiten/") + dictType.toLower());
         dictionariesToLoad.append(qMakePair(dictType, dictionary));
     }
 
     QStringList dictNames = group.readEntry<QStringList>("__NAMES", QStringList());
     foreach (const QString &name, dictNames) {
         QString dictPath = group.readEntry(name, QString());
         if (!dictPath.isEmpty() && !name.isEmpty()) {
             dictionariesToLoad.append(qMakePair(name, dictPath));
         }
     }
 
     QStringList loadedDictionaries = _dictionaryManager.listDictionariesOfType(dictType.toLower());
 
     typedef QPair<QString, QString> __dictName_t; // Can't have commas in a foreach
     foreach (const __dictName_t &it, dictionariesToLoad) {
         // Remove from the loadedDictionaries list all the dicts that we are supposed to load
         // This will leave only those that need to be unloaded at the end
         if (loadedDictionaries.removeAll(it.first) == 0) {
             _dictionaryManager.addDictionary(it.second, it.first, dictType.toLower());
         }
     }
 
     foreach (const QString &it, loadedDictionaries) {
         _dictionaryManager.removeDictionary(it);
     }
 
     /*
     #define PERSONALDictionaryLocation( __X ) KGlobal::dirs()->saveLocation(__X, \
             "kiten/dictionaries/",true).append("personal")
     if(!isKanji) { //Don't load personal dicts as kanji dicts
             QString personalDict(PERSONALDictionaryLocation("data"));
             if (QFile::exists(personalDict) &&
                                     loadedDicts.find(personalDict) == loadedDicts.end())
             {
                     dictionaryManager.addDictionary(personalDict,"Personal",dictType.lower());
             }
     }
     */
 }
 
 /**
  * This function allows one to print out the currently displayed result
  */
 void Kiten::print()
 {
     //  _ResultsView->toHTML();
 }
 
 /******************************************************************************
   HISTORY HANDLING FUNCTIONS
 ******************************************************************************/
 
 /**
  * Given one Search Result, it adds it to the history list the logic in it
  * exists to maintain the history list of a certain size.  Note that this method
  * does not display the EntryList it is given... so you can add something to the
  * history and display it separately.
  */
 void Kiten::addHistory(EntryList *result)
 {
     _historyList.addItem(result);
     enableHistoryButtons();
 }
 
 /**
  * This goes back one item in the history and displays
  */
 void Kiten::back(void)
 {
     _historyList.prev();
     displayHistoryItem();
 }
 
 /**
  * This goes forward one item in the history and displays
  */
 void Kiten::forward(void)
 {
     _historyList.next();
     displayHistoryItem();
 }
 
 /**
  * This method just sets the current element in the list and triggers the display
  */
 void Kiten::goInHistory(int index)
 {
     _historyList.setCurrent(index);
     displayHistoryItem();
 }
 
 void Kiten::displayHistoryItem()
 {
     if (_historyList.current() == nullptr)
         return;
 
     _inputManager->setSearchQuery(_historyList.current()->getQuery());
     enableHistoryButtons();
 
     displayResults(_historyList.current());
 }
 
 /**
  * This function determines whether the forward and back buttons should be enabled.
  * It is currently done independently of what action has just occurred.
  */
 void Kiten::enableHistoryButtons()
 {
     _backAction->setEnabled(_historyList.index() > 0);
     _forwardAction->setEnabled(_historyList.index() + 1 < _historyList.count());
 }
 
 void Kiten::setCurrentScrollValue(int value)
 {
     if (_historyList.current() == nullptr)
         return;
 
     _historyList.current()->setScrollValue(value);
 }