Exemplo n.º 1
0
class FullFetch(QDialog): # {{{

    def __init__(self, current_cover=None, parent=None):
        QDialog.__init__(self, parent)
        self.current_cover = current_cover
        self.log = Log()
        self.book = self.cover_pixmap = None

        self.setWindowTitle(_('Downloading metadata...'))
        self.setWindowIcon(QIcon(I('metadata.png')))

        self.stack = QStackedWidget()
        self.l = l = QVBoxLayout()
        self.setLayout(l)
        l.addWidget(self.stack)

        self.bb = QDialogButtonBox(QDialogButtonBox.Cancel|QDialogButtonBox.Ok)
        l.addWidget(self.bb)
        self.bb.rejected.connect(self.reject)
        self.bb.accepted.connect(self.accept)
        self.next_button = self.bb.addButton(_('Next'), self.bb.AcceptRole)
        self.next_button.setDefault(True)
        self.next_button.setEnabled(False)
        self.next_button.setIcon(QIcon(I('ok.png')))
        self.next_button.clicked.connect(self.next_clicked)
        self.ok_button = self.bb.button(self.bb.Ok)
        self.ok_button.clicked.connect(self.ok_clicked)
        self.prev_button = self.bb.addButton(_('Back'), self.bb.ActionRole)
        self.prev_button.setIcon(QIcon(I('back.png')))
        self.prev_button.clicked.connect(self.back_clicked)
        self.log_button = self.bb.addButton(_('View log'), self.bb.ActionRole)
        self.log_button.clicked.connect(self.view_log)
        self.log_button.setIcon(QIcon(I('debug.png')))
        self.ok_button.setVisible(False)
        self.prev_button.setVisible(False)

        self.identify_widget = IdentifyWidget(self.log, self)
        self.identify_widget.rejected.connect(self.reject)
        self.identify_widget.results_found.connect(self.identify_results_found)
        self.identify_widget.book_selected.connect(self.book_selected)
        self.stack.addWidget(self.identify_widget)

        self.covers_widget = CoversWidget(self.log, self.current_cover, parent=self)
        self.covers_widget.chosen.connect(self.ok_clicked)
        self.stack.addWidget(self.covers_widget)

        # Workaround for Qt 4.8.0 bug that causes the frame of the window to go
        # off the top of the screen if a max height is not set for the
        # QWebView. Seems to only happen on windows, but keep it for all
        # platforms just in case.
        self.identify_widget.comments_view.setMaximumHeight(500)
        self.resize(850, 600)

        self.finished.connect(self.cleanup)

    def view_log(self):
        self._lv = LogViewer(self.log, self)

    def book_selected(self, book, caches):
        self.next_button.setVisible(False)
        self.ok_button.setVisible(True)
        self.prev_button.setVisible(True)
        self.book = book
        self.stack.setCurrentIndex(1)
        self.log('\n\n')
        self.covers_widget.start(book, self.current_cover,
                self.title, self.authors, caches)
        self.ok_button.setFocus()

    def back_clicked(self):
        self.next_button.setVisible(True)
        self.ok_button.setVisible(False)
        self.prev_button.setVisible(False)
        self.stack.setCurrentIndex(0)
        self.covers_widget.cancel()
        self.covers_widget.reset_covers()

    def accept(self):
        if self.stack.currentIndex() == 1:
            return QDialog.accept(self)
        # Prevent the usual dialog accept mechanisms from working
        pass

    def reject(self):
        self.identify_widget.cancel()
        self.covers_widget.cancel()
        return QDialog.reject(self)

    def cleanup(self):
        self.covers_widget.cleanup()

    def identify_results_found(self):
        self.next_button.setEnabled(True)

    def next_clicked(self, *args):
        self.identify_widget.get_result()

    def ok_clicked(self, *args):
        self.cover_pixmap = self.covers_widget.cover_pixmap()
        if DEBUG_DIALOG:
            if self.cover_pixmap is not None:
                self.w = QLabel()
                self.w.setPixmap(self.cover_pixmap)
                self.stack.addWidget(self.w)
                self.stack.setCurrentIndex(2)
        else:
            QDialog.accept(self)

    def start(self, title=None, authors=None, identifiers={}):
        self.title, self.authors = title, authors
        self.identify_widget.start(title=title, authors=authors,
                identifiers=identifiers)
        return self.exec_()
Exemplo n.º 2
0
class FullFetch(QDialog):  # {{{
    def __init__(self, current_cover=None, parent=None):
        QDialog.__init__(self, parent)
        self.current_cover = current_cover
        self.log = Log()
        self.book = self.cover_pixmap = None

        self.setWindowTitle(_('Downloading metadata...'))
        self.setWindowIcon(QIcon(I('metadata.png')))

        self.stack = QStackedWidget()
        self.l = l = QVBoxLayout()
        self.setLayout(l)
        l.addWidget(self.stack)

        self.bb = QDialogButtonBox(QDialogButtonBox.Cancel
                                   | QDialogButtonBox.Ok)
        l.addWidget(self.bb)
        self.bb.rejected.connect(self.reject)
        self.bb.accepted.connect(self.accept)
        self.next_button = self.bb.addButton(_('Next'), self.bb.ActionRole)
        self.next_button.setDefault(True)
        self.next_button.setEnabled(False)
        self.next_button.setIcon(QIcon(I('ok.png')))
        self.next_button.clicked.connect(self.next_clicked)
        self.ok_button = self.bb.button(self.bb.Ok)
        self.ok_button.setEnabled(False)
        self.ok_button.clicked.connect(self.ok_clicked)
        self.prev_button = self.bb.addButton(_('Back'), self.bb.ActionRole)
        self.prev_button.setIcon(QIcon(I('back.png')))
        self.prev_button.clicked.connect(self.back_clicked)
        self.log_button = self.bb.addButton(_('View log'), self.bb.ActionRole)
        self.log_button.clicked.connect(self.view_log)
        self.log_button.setIcon(QIcon(I('debug.png')))
        self.prev_button.setVisible(False)

        self.identify_widget = IdentifyWidget(self.log, self)
        self.identify_widget.rejected.connect(self.reject)
        self.identify_widget.results_found.connect(self.identify_results_found)
        self.identify_widget.book_selected.connect(self.book_selected)
        self.stack.addWidget(self.identify_widget)

        self.covers_widget = CoversWidget(self.log,
                                          self.current_cover,
                                          parent=self)
        self.covers_widget.chosen.connect(self.ok_clicked)
        self.stack.addWidget(self.covers_widget)

        self.resize(850, 600)
        geom = gprefs.get('metadata_single_gui_geom', None)
        if geom is not None and geom:
            self.restoreGeometry(geom)

        self.finished.connect(self.cleanup)

    def view_log(self):
        self._lv = LogViewer(self.log, self)

    def book_selected(self, book, caches):
        self.next_button.setVisible(False)
        self.prev_button.setVisible(True)
        self.book = book
        self.stack.setCurrentIndex(1)
        self.log('\n\n')
        self.covers_widget.start(book, self.current_cover, self.title,
                                 self.authors, caches)
        self.ok_button.setFocus()

    def back_clicked(self):
        self.next_button.setVisible(True)
        self.prev_button.setVisible(False)
        self.next_button.setFocus()
        self.stack.setCurrentIndex(0)
        self.covers_widget.cancel()
        self.covers_widget.reset_covers()

    def accept(self):
        # Prevent the usual dialog accept mechanisms from working
        gprefs['metadata_single_gui_geom'] = bytearray(self.saveGeometry())
        if DEBUG_DIALOG:
            if self.stack.currentIndex() == 2:
                return QDialog.accept(self)
        else:
            if self.stack.currentIndex() == 1:
                return QDialog.accept(self)

    def reject(self):
        gprefs['metadata_single_gui_geom'] = bytearray(self.saveGeometry())
        self.identify_widget.cancel()
        self.covers_widget.cancel()
        return QDialog.reject(self)

    def cleanup(self):
        self.covers_widget.cleanup()

    def identify_results_found(self):
        self.next_button.setEnabled(True)
        self.ok_button.setEnabled(True)

    def next_clicked(self, *args):
        gprefs['metadata_single_gui_geom'] = bytearray(self.saveGeometry())
        self.identify_widget.get_result()

    def ok_clicked(self, *args):
        self.cover_pixmap = self.covers_widget.cover_pixmap()
        if self.stack.currentIndex() == 0:
            self.next_clicked()
            return
        if DEBUG_DIALOG:
            if self.cover_pixmap is not None:
                self.w = QLabel()
                self.w.setPixmap(self.cover_pixmap)
                self.stack.addWidget(self.w)
                self.stack.setCurrentIndex(2)
        else:
            QDialog.accept(self)

    def start(self, title=None, authors=None, identifiers={}):
        self.title, self.authors = title, authors
        self.identify_widget.start(title=title,
                                   authors=authors,
                                   identifiers=identifiers)
        return self.exec_()
Exemplo n.º 3
0
class Preferences(QMainWindow):

    run_wizard_requested = pyqtSignal()

    def __init__(self, gui, initial_plugin=None, close_after_initial=False):
        QMainWindow.__init__(self, gui)
        self.gui = gui
        self.must_restart = False
        self.committed = False
        self.close_after_initial = close_after_initial

        self.resize(930, 720)
        nh, nw = min_available_height()-25, available_width()-10
        if nh < 0:
            nh = 800
        if nw < 0:
            nw = 600
        nh = min(self.height(), nh)
        nw = min(self.width(), nw)
        self.resize(nw, nh)
        self.esc_action = QAction(self)
        self.addAction(self.esc_action)
        self.esc_action.setShortcut(QKeySequence(Qt.Key_Escape))
        self.esc_action.triggered.connect(self.esc)

        geom = gprefs.get('preferences_window_geometry', None)
        if geom is not None:
            self.restoreGeometry(geom)

        # Center
        if islinux:
            self.move(gui.rect().center() - self.rect().center())

        self.setWindowModality(Qt.WindowModal)
        self.setWindowTitle(__appname__ + ' - ' + _('Preferences'))
        self.setWindowIcon(QIcon(I('config.png')))

        self.status_bar = StatusBar(self)
        self.setStatusBar(self.status_bar)

        self.stack = QStackedWidget(self)
        self.cw = QWidget(self)
        self.cw.setLayout(QVBoxLayout())
        self.cw.layout().addWidget(self.stack)
        self.bb = QDialogButtonBox(QDialogButtonBox.Close)
        self.wizard_button = self.bb.addButton(_('Run welcome wizard'),
                self.bb.ActionRole)
        self.wizard_button.setIcon(QIcon(I('wizard.png')))
        self.wizard_button.clicked.connect(self.run_wizard,
                type=Qt.QueuedConnection)
        self.cw.layout().addWidget(self.bb)
        self.bb.button(self.bb.Close).setDefault(True)
        self.bb.rejected.connect(self.close, type=Qt.QueuedConnection)
        self.setCentralWidget(self.cw)
        self.browser = Browser(self)
        self.browser.show_plugin.connect(self.show_plugin)
        self.stack.addWidget(self.browser)
        self.scroll_area = QScrollArea(self)
        self.stack.addWidget(self.scroll_area)
        self.scroll_area.setWidgetResizable(True)

        self.bar = QToolBar(self)
        self.addToolBar(self.bar)
        self.bar.setVisible(False)
        self.bar.setIconSize(QSize(ICON_SIZE, ICON_SIZE))
        self.bar.setMovable(False)
        self.bar.setFloatable(False)
        self.bar.setToolButtonStyle(Qt.ToolButtonTextBesideIcon)
        self.apply_action = self.bar.addAction(QIcon(I('ok.png')), _('&Apply'),
                self.commit)
        self.cancel_action = self.bar.addAction(QIcon(I('window-close.png')),
                _('&Cancel'),                self.cancel)
        self.bar_title = BarTitle(self.bar)
        self.bar.addWidget(self.bar_title)
        self.restore_action = self.bar.addAction(QIcon(I('clear_left.png')),
                _('Restore &defaults'), self.restore_defaults)
        for ac, tt in [('apply', _('Save changes')),
                ('cancel', _('Cancel and return to overview'))]:
            ac = getattr(self, ac+'_action')
            ac.setToolTip(tt)
            ac.setWhatsThis(tt)
            ac.setStatusTip(tt)

        for ch in self.bar.children():
            if isinstance(ch, QToolButton):
                ch.setCursor(Qt.PointingHandCursor)
                ch.setAutoRaise(True)

        self.stack.setCurrentIndex(0)

        if initial_plugin is not None:
            category, name = initial_plugin
            plugin = get_plugin(category, name)
            if plugin is not None:
                self.show_plugin(plugin)

    def run_wizard(self):
        self.close()
        self.run_wizard_requested.emit()

    def set_tooltips_for_labels(self):

        def process_child(child):
            for g in child.children():
                if isinstance(g, QLabel):
                    buddy = g.buddy()
                    if buddy is not None and hasattr(buddy, 'toolTip'):
                        htext = unicode(buddy.toolTip()).strip()
                        etext = unicode(g.toolTip()).strip()
                        if htext and not etext:
                            g.setToolTip(htext)
                            g.setWhatsThis(htext)
                else:
                    process_child(g)

        process_child(self.showing_widget)

    def show_plugin(self, plugin):
        self.showing_widget = plugin.create_widget(self.scroll_area)
        self.showing_widget.genesis(self.gui)
        self.showing_widget.initialize()
        self.set_tooltips_for_labels()
        self.scroll_area.setWidget(self.showing_widget)
        self.stack.setCurrentIndex(1)
        self.showing_widget.show()
        self.setWindowTitle(__appname__ + ' - ' + _('Preferences') + ' - ' +
                plugin.gui_name)
        self.apply_action.setEnabled(False)
        self.showing_widget.changed_signal.connect(lambda :
                self.apply_action.setEnabled(True))
        self.restore_action.setEnabled(self.showing_widget.supports_restoring_to_defaults)
        tt = self.showing_widget.restore_defaults_desc
        if not self.restore_action.isEnabled():
            tt = _('Restoring to defaults not supported for') + ' ' + \
                plugin.gui_name
        self.restore_action.setToolTip(textwrap.fill(tt))
        self.restore_action.setWhatsThis(textwrap.fill(tt))
        self.restore_action.setStatusTip(tt)
        self.bar_title.show_plugin(plugin)
        self.setWindowIcon(QIcon(plugin.icon))
        self.bar.setVisible(True)
        self.bb.setVisible(False)


    def hide_plugin(self):
        self.showing_widget = QWidget(self.scroll_area)
        self.scroll_area.setWidget(self.showing_widget)
        self.setWindowTitle(__appname__ + ' - ' + _('Preferences'))
        self.bar.setVisible(False)
        self.stack.setCurrentIndex(0)
        self.setWindowIcon(QIcon(I('config.png')))
        self.bb.setVisible(True)

    def esc(self, *args):
        if self.stack.currentIndex() == 1:
            self.cancel()
        elif self.stack.currentIndex() == 0:
            self.close()

    def commit(self, *args):
        try:
            must_restart = self.showing_widget.commit()
        except AbortCommit:
            return
        rc = self.showing_widget.restart_critical
        self.committed = True
        do_restart = False
        if must_restart:
            self.must_restart = True
            msg = _('Some of the changes you made require a restart.'
                    ' Please restart calibre as soon as possible.')
            if rc:
                msg = _('The changes you have made require calibre be '
                        'restarted immediately. You will not be allowed to '
                        'set any more preferences, until you restart.')


            d = warning_dialog(self, _('Restart needed'), msg,
                    show_copy_button=False)
            b = d.bb.addButton(_('Restart calibre now'), d.bb.AcceptRole)
            b.setIcon(QIcon(I('lt.png')))
            d.do_restart = False
            def rf():
                d.do_restart = True
            b.clicked.connect(rf)
            d.set_details('')
            d.exec_()
            b.clicked.disconnect()
            do_restart = d.do_restart
        self.showing_widget.refresh_gui(self.gui)
        self.hide_plugin()
        if self.close_after_initial or (must_restart and rc) or do_restart:
            self.close()
        if do_restart:
            self.gui.quit(restart=True)


    def cancel(self, *args):
        if self.close_after_initial:
            self.close()
        else:
            self.hide_plugin()

    def restore_defaults(self, *args):
        self.showing_widget.restore_defaults()

    def closeEvent(self, *args):
        gprefs.set('preferences_window_geometry',
                bytearray(self.saveGeometry()))
        if self.committed:
            self.gui.must_restart_before_config = self.must_restart
            self.gui.tags_view.recount()
            self.gui.create_device_menu()
            self.gui.set_device_menu_items_state(bool(self.gui.device_connected))
            self.gui.bars_manager.apply_settings()
            self.gui.bars_manager.update_bars()
            self.gui.build_context_menus()

        return QMainWindow.closeEvent(self, *args)
Exemplo n.º 4
0
class FullFetch(QDialog):  # {{{

    def __init__(self, current_cover=None, parent=None):
        QDialog.__init__(self, parent)
        self.current_cover = current_cover
        self.log = Log()
        self.book = self.cover_pixmap = None

        self.setWindowTitle(_('Downloading metadata...'))
        self.setWindowIcon(QIcon(I('metadata.png')))

        self.stack = QStackedWidget()
        self.l = l = QVBoxLayout()
        self.setLayout(l)
        l.addWidget(self.stack)

        self.bb = QDialogButtonBox(QDialogButtonBox.Cancel|QDialogButtonBox.Ok)
        l.addWidget(self.bb)
        self.bb.rejected.connect(self.reject)
        self.bb.accepted.connect(self.accept)
        self.next_button = self.bb.addButton(_('Next'), self.bb.AcceptRole)
        self.next_button.setDefault(True)
        self.next_button.setEnabled(False)
        self.next_button.setIcon(QIcon(I('ok.png')))
        self.next_button.clicked.connect(self.next_clicked)
        self.ok_button = self.bb.button(self.bb.Ok)
        self.ok_button.clicked.connect(self.ok_clicked)
        self.prev_button = self.bb.addButton(_('Back'), self.bb.ActionRole)
        self.prev_button.setIcon(QIcon(I('back.png')))
        self.prev_button.clicked.connect(self.back_clicked)
        self.log_button = self.bb.addButton(_('View log'), self.bb.ActionRole)
        self.log_button.clicked.connect(self.view_log)
        self.log_button.setIcon(QIcon(I('debug.png')))
        self.ok_button.setVisible(False)
        self.prev_button.setVisible(False)

        self.identify_widget = IdentifyWidget(self.log, self)
        self.identify_widget.rejected.connect(self.reject)
        self.identify_widget.results_found.connect(self.identify_results_found)
        self.identify_widget.book_selected.connect(self.book_selected)
        self.stack.addWidget(self.identify_widget)

        self.covers_widget = CoversWidget(self.log, self.current_cover, parent=self)
        self.covers_widget.chosen.connect(self.ok_clicked)
        self.stack.addWidget(self.covers_widget)

        self.resize(850, 600)
        geom = gprefs.get('metadata_single_gui_geom', None)
        if geom is not None and geom:
            self.restoreGeometry(geom)

        self.finished.connect(self.cleanup)

    def view_log(self):
        self._lv = LogViewer(self.log, self)

    def book_selected(self, book, caches):
        self.next_button.setVisible(False)
        self.ok_button.setVisible(True)
        self.prev_button.setVisible(True)
        self.book = book
        self.stack.setCurrentIndex(1)
        self.log('\n\n')
        self.covers_widget.start(book, self.current_cover,
                self.title, self.authors, caches)
        self.ok_button.setFocus()

    def back_clicked(self):
        self.next_button.setVisible(True)
        self.ok_button.setVisible(False)
        self.prev_button.setVisible(False)
        self.stack.setCurrentIndex(0)
        self.covers_widget.cancel()
        self.covers_widget.reset_covers()

    def accept(self):
        gprefs['metadata_single_gui_geom'] = bytearray(self.saveGeometry())
        if self.stack.currentIndex() == 1:
            return QDialog.accept(self)
        # Prevent the usual dialog accept mechanisms from working
        pass

    def reject(self):
        gprefs['metadata_single_gui_geom'] = bytearray(self.saveGeometry())
        self.identify_widget.cancel()
        self.covers_widget.cancel()
        return QDialog.reject(self)

    def cleanup(self):
        self.covers_widget.cleanup()

    def identify_results_found(self):
        self.next_button.setEnabled(True)

    def next_clicked(self, *args):
        self.identify_widget.get_result()

    def ok_clicked(self, *args):
        self.cover_pixmap = self.covers_widget.cover_pixmap()
        if DEBUG_DIALOG:
            if self.cover_pixmap is not None:
                self.w = QLabel()
                self.w.setPixmap(self.cover_pixmap)
                self.stack.addWidget(self.w)
                self.stack.setCurrentIndex(2)
        else:
            QDialog.accept(self)

    def start(self, title=None, authors=None, identifiers={}):
        self.title, self.authors = title, authors
        self.identify_widget.start(title=title, authors=authors,
                identifiers=identifiers)
        return self.exec_()
Exemplo n.º 5
0
class StepEditDialog(QDialog):
    def __init__(self, parent, step):
        super(StepEditDialog, self).__init__(parent)
        self._step = step
        self._initGui()

    #--------------------------------------------------------------------#

    def _initGui(self):
        layout = QVBoxLayout()
        self.setLayout(layout)

        self.cb_step_type = QComboBox()
        self.widgets = QStackedWidget()
        layout.addWidget(self.cb_step_type)
        layout.addWidget(self.widgets)

        if self._step is None:
            for step_class in Step.REGISTERED_STEPS.values():
                self.cb_step_type.addItem(step_class.NAME)
                w = step_class.GET_WIDGET()
                self.widgets.addWidget(w)
            self.cb_step_type.currentIndexChanged.connect(
                self._stepTypeChanged)
        else:
            self.cb_step_type.addItems(Step.REGISTERED_STEPS.keys())
            self.cb_step_type.setEnabled(False)
            index = self.cb_step_type.findText(QString(str(self._step.NAME)))
            self.cb_step_type.setCurrentIndex(index)
            w = self._step.getWidget()
            self.widgets.addWidget(w)

        self._showStepProperties()

        ###################
        # Action Buttons: #
        ###################
        buttons = QDialogButtonBox(
            QDialogButtonBox.Ok | QDialogButtonBox.Cancel, Qt.Horizontal, self)
        buttons.accepted.connect(self.accept)
        buttons.rejected.connect(self.reject)
        layout.addWidget(buttons)

    #--------------------------------------------------------------------#

    def _showStepProperties(self):
        index = self.cb_step_type.currentIndex()
        self.widgets.setCurrentIndex(index)

    #--------------------------------------------------------------------#

    def _stepTypeChanged(self):
        self._showStepProperties()

    #--------------------------------------------------------------------#

    def sizeHint(self):
        hint = QDialog.sizeHint(self)
        hint.setWidth(500)
        return hint

    #--------------------------------------------------------------------#

    def step(self):
        return self._step

    #--------------------------------------------------------------------#

    def accept(self, *args, **kwargs):
        if self._step is None:
            name = str(self.cb_step_type.currentText())
            step_class = Step.REGISTERED_STEPS[name]
            self._step = step_class()
            self.widgets.currentWidget().save(self._step.attributes())
        else:
            self._selected_widget.save()
        return QDialog.accept(self, *args, **kwargs)
class FullFetch(QDialog):  # {{{
    def __init__(self, current_cover=None, parent=None):
        QDialog.__init__(self, parent)
        self.current_cover = current_cover
        self.log = Log()
        self.book = self.cover_pixmap = None

        self.setWindowTitle(_('Downloading metadata...'))
        self.setWindowIcon(QIcon(I('metadata.png')))

        self.stack = QStackedWidget()
        self.l = l = QVBoxLayout()
        self.setLayout(l)
        l.addWidget(self.stack)

        self.bb = QDialogButtonBox(QDialogButtonBox.Cancel
                                   | QDialogButtonBox.Ok)
        l.addWidget(self.bb)
        self.bb.rejected.connect(self.reject)
        self.next_button = self.bb.addButton(_('Next'), self.bb.AcceptRole)
        self.next_button.setDefault(True)
        self.next_button.setEnabled(False)
        self.next_button.setIcon(QIcon(I('ok.png')))
        self.next_button.clicked.connect(self.next_clicked)
        self.ok_button = self.bb.button(self.bb.Ok)
        self.ok_button.clicked.connect(self.ok_clicked)
        self.prev_button = self.bb.addButton(_('Back'), self.bb.ActionRole)
        self.prev_button.setIcon(QIcon(I('back.png')))
        self.prev_button.clicked.connect(self.back_clicked)
        self.log_button = self.bb.addButton(_('View log'), self.bb.ActionRole)
        self.log_button.clicked.connect(self.view_log)
        self.log_button.setIcon(QIcon(I('debug.png')))
        self.ok_button.setVisible(False)
        self.prev_button.setVisible(False)

        self.identify_widget = IdentifyWidget(self.log, self)
        self.identify_widget.rejected.connect(self.reject)
        self.identify_widget.results_found.connect(self.identify_results_found)
        self.identify_widget.book_selected.connect(self.book_selected)
        self.stack.addWidget(self.identify_widget)

        self.covers_widget = CoversWidget(self.log,
                                          self.current_cover,
                                          parent=self)
        self.covers_widget.chosen.connect(self.ok_clicked)
        self.stack.addWidget(self.covers_widget)

        # Workaround for Qt 4.8.0 bug that causes the frame of the window to go
        # off the top of the screen if a max height is not set for the
        # QWebView. Seems to only happen on windows, but keep it for all
        # platforms just in case.
        self.identify_widget.comments_view.setMaximumHeight(500)
        self.resize(850, 600)

        self.finished.connect(self.cleanup)

    def view_log(self):
        self._lv = LogViewer(self.log, self)

    def book_selected(self, book, caches):
        self.next_button.setVisible(False)
        self.ok_button.setVisible(True)
        self.prev_button.setVisible(True)
        self.book = book
        self.stack.setCurrentIndex(1)
        self.log('\n\n')
        self.covers_widget.start(book, self.current_cover, self.title,
                                 self.authors, caches)

    def back_clicked(self):
        self.next_button.setVisible(True)
        self.ok_button.setVisible(False)
        self.prev_button.setVisible(False)
        self.stack.setCurrentIndex(0)
        self.covers_widget.cancel()
        self.covers_widget.reset_covers()

    def accept(self):
        # Prevent the usual dialog accept mechanisms from working
        pass

    def reject(self):
        self.identify_widget.cancel()
        self.covers_widget.cancel()
        return QDialog.reject(self)

    def cleanup(self):
        self.covers_widget.cleanup()

    def identify_results_found(self):
        self.next_button.setEnabled(True)

    def next_clicked(self, *args):
        self.identify_widget.get_result()

    def ok_clicked(self, *args):
        self.cover_pixmap = self.covers_widget.cover_pixmap()
        if DEBUG_DIALOG:
            if self.cover_pixmap is not None:
                self.w = QLabel()
                self.w.setPixmap(self.cover_pixmap)
                self.stack.addWidget(self.w)
                self.stack.setCurrentIndex(2)
        else:
            QDialog.accept(self)

    def start(self, title=None, authors=None, identifiers={}):
        self.title, self.authors = title, authors
        self.identify_widget.start(title=title,
                                   authors=authors,
                                   identifiers=identifiers)
        return self.exec_()