def __init__(self):
        super().__init__()
        #: widget's runtime state
        self.__state = State.NoState
        self.data = None
        self._n_image_categories = 0
        self._n_image_data = 0
        self._n_skipped = 0

        self.__invalidated = False
        self.__pendingTask = None

        vbox = gui.vBox(self.controlArea)
        hbox = gui.hBox(vbox)
        self.recent_cb = QComboBox(
            sizeAdjustPolicy=QComboBox.AdjustToMinimumContentsLengthWithIcon,
            minimumContentsLength=16,
            acceptDrops=True)
        self.recent_cb.installEventFilter(self)
        self.recent_cb.activated[int].connect(self.__onRecentActivated)
        icons = standard_icons(self)

        browseaction = QAction(
            "Open/Load Images",
            self,
            iconText="\N{HORIZONTAL ELLIPSIS}",
            icon=icons.dir_open_icon,
            toolTip="Select a directory from which to load the images")
        browseaction.triggered.connect(self.__runOpenDialog)
        reloadaction = QAction("Reload",
                               self,
                               icon=icons.reload_icon,
                               toolTip="Reload current image set")
        reloadaction.triggered.connect(self.reload)
        self.__actions = namespace(
            browse=browseaction,
            reload=reloadaction,
        )

        browsebutton = QPushButton(browseaction.iconText(),
                                   icon=browseaction.icon(),
                                   toolTip=browseaction.toolTip(),
                                   clicked=browseaction.trigger)
        reloadbutton = QPushButton(
            reloadaction.iconText(),
            icon=reloadaction.icon(),
            clicked=reloadaction.trigger,
            default=True,
        )

        hbox.layout().addWidget(self.recent_cb)
        hbox.layout().addWidget(browsebutton)
        hbox.layout().addWidget(reloadbutton)

        self.addActions([browseaction, reloadaction])

        reloadaction.changed.connect(
            lambda: reloadbutton.setEnabled(reloadaction.isEnabled()))
        box = gui.vBox(vbox, "Info")
        self.infostack = QStackedWidget()

        self.info_area = QLabel(text="No image set selected", wordWrap=True)
        self.progress_widget = QProgressBar(minimum=0, maximum=0)
        self.cancel_button = QPushButton(
            "Cancel",
            icon=icons.cancel_icon,
        )
        self.cancel_button.clicked.connect(self.cancel)

        w = QWidget()
        vlayout = QVBoxLayout()
        vlayout.setContentsMargins(0, 0, 0, 0)
        hlayout = QHBoxLayout()
        hlayout.setContentsMargins(0, 0, 0, 0)

        hlayout.addWidget(self.progress_widget)
        hlayout.addWidget(self.cancel_button)
        vlayout.addLayout(hlayout)

        self.pathlabel = TextLabel()
        self.pathlabel.setTextElideMode(Qt.ElideMiddle)
        self.pathlabel.setAttribute(Qt.WA_MacSmallSize)

        vlayout.addWidget(self.pathlabel)
        w.setLayout(vlayout)

        self.infostack.addWidget(self.info_area)
        self.infostack.addWidget(w)

        box.layout().addWidget(self.infostack)

        self.__initRecentItemsModel()
        self.__invalidated = True
        self.__executor = ThreadExecutor(self)

        QApplication.postEvent(self, QEvent(RuntimeEvent.Init))
    def __init__(self):
        super().__init__()
        #: widget's runtime state
        self.__state = State.NoState
        self.corpus = None
        self.n_text_categories = 0
        self.n_text_data = 0
        self.skipped_documents = []

        self.__invalidated = False
        self.__pendingTask = None

        vbox = gui.vBox(self.controlArea)
        hbox = gui.hBox(vbox)
        self.recent_cb = QComboBox(
            sizeAdjustPolicy=QComboBox.AdjustToMinimumContentsLengthWithIcon,
            minimumContentsLength=16,
            acceptDrops=True
        )
        self.recent_cb.installEventFilter(self)
        self.recent_cb.activated[int].connect(self.__onRecentActivated)

        browseaction = QAction(
            "Open/Load Documents", self,
            iconText="\N{HORIZONTAL ELLIPSIS}",
            icon=self.style().standardIcon(QStyle.SP_DirOpenIcon),
            toolTip="选中一个文件夹以载入文档"
        )
        browseaction.triggered.connect(self.__runOpenDialog)
        reloadaction = QAction(
            "重载", self,
            icon=self.style().standardIcon(QStyle.SP_BrowserReload),
            toolTip="重载当前文档集"
        )
        reloadaction.triggered.connect(self.reload)
        self.__actions = namespace(
            browse=browseaction,
            reload=reloadaction,
        )

        browsebutton = QPushButton(
            browseaction.iconText(),
            icon=browseaction.icon(),
            toolTip=browseaction.toolTip(),
            clicked=browseaction.trigger
        )
        reloadbutton = QPushButton(
            reloadaction.iconText(),
            icon=reloadaction.icon(),
            clicked=reloadaction.trigger,
            default=True,
        )

        hbox.layout().addWidget(self.recent_cb)
        hbox.layout().addWidget(browsebutton)
        hbox.layout().addWidget(reloadbutton)

        self.addActions([browseaction, reloadaction])

        reloadaction.changed.connect(
            lambda: reloadbutton.setEnabled(reloadaction.isEnabled())
        )
        box = gui.vBox(vbox, "信息")
        self.infostack = QStackedWidget()

        self.info_area = QLabel(
            text="没有选中文档",
            wordWrap=True
        )
        self.progress_widget = QProgressBar(
            minimum=0, maximum=100
        )
        self.cancel_button = QPushButton(
            "取消",
            icon=self.style().standardIcon(QStyle.SP_DialogCancelButton),
        )
        self.cancel_button.clicked.connect(self.cancel)

        w = QWidget()
        vlayout = QVBoxLayout()
        vlayout.setContentsMargins(0, 0, 0, 0)
        hlayout = QHBoxLayout()
        hlayout.setContentsMargins(0, 0, 0, 0)

        hlayout.addWidget(self.progress_widget)
        hlayout.addWidget(self.cancel_button)
        vlayout.addLayout(hlayout)

        self.pathlabel = TextLabel()
        self.pathlabel.setTextElideMode(Qt.ElideMiddle)
        self.pathlabel.setAttribute(Qt.WA_MacSmallSize)

        vlayout.addWidget(self.pathlabel)
        w.setLayout(vlayout)

        self.infostack.addWidget(self.info_area)
        self.infostack.addWidget(w)

        box.layout().addWidget(self.infostack)

        self.__initRecentItemsModel()
        self.__invalidated = True
        self.__executor = ThreadExecutor(self)

        QApplication.postEvent(self, QEvent(RuntimeEvent.Init))
    def __init__(self):
        super().__init__()
        #: widget's runtime state
        self.__state = State.NoState
        self.data = None
        self._n_image_categories = 0
        self._n_image_data = 0
        self._n_skipped = 0

        self.__invalidated = False
        self.__pendingTask = None

        vbox = gui.vBox(self.controlArea)
        hbox = gui.hBox(vbox)
        self.recent_cb = QComboBox(
            sizeAdjustPolicy=QComboBox.AdjustToMinimumContentsLengthWithIcon,
            minimumContentsLength=16,
            acceptDrops=True
        )
        self.recent_cb.installEventFilter(self)
        self.recent_cb.activated[int].connect(self.__onRecentActivated)
        icons = standard_icons(self)

        browseaction = QAction(
            "Open/Load Images", self,
            iconText="\N{HORIZONTAL ELLIPSIS}",
            icon=icons.dir_open_icon,
            toolTip="Select a directory from which to load the images"
        )
        browseaction.triggered.connect(self.__runOpenDialog)
        reloadaction = QAction(
            "Reload", self,
            icon=icons.reload_icon,
            toolTip="Reload current image set"
        )
        reloadaction.triggered.connect(self.reload)
        self.__actions = namespace(
            browse=browseaction,
            reload=reloadaction,
        )

        browsebutton = QPushButton(
            browseaction.iconText(),
            icon=browseaction.icon(),
            toolTip=browseaction.toolTip(),
            clicked=browseaction.trigger
        )
        reloadbutton = QPushButton(
            reloadaction.iconText(),
            icon=reloadaction.icon(),
            clicked=reloadaction.trigger,
            default=True,
        )

        hbox.layout().addWidget(self.recent_cb)
        hbox.layout().addWidget(browsebutton)
        hbox.layout().addWidget(reloadbutton)

        self.addActions([browseaction, reloadaction])

        reloadaction.changed.connect(
            lambda: reloadbutton.setEnabled(reloadaction.isEnabled())
        )
        box = gui.vBox(vbox, "Info")
        self.infostack = QStackedWidget()

        self.info_area = QLabel(
            text="No image set selected",
            wordWrap=True
        )
        self.progress_widget = QProgressBar(
            minimum=0, maximum=0
        )
        self.cancel_button = QPushButton(
            "Cancel", icon=icons.cancel_icon,
        )
        self.cancel_button.clicked.connect(self.cancel)

        w = QWidget()
        vlayout = QVBoxLayout()
        vlayout.setContentsMargins(0, 0, 0, 0)
        hlayout = QHBoxLayout()
        hlayout.setContentsMargins(0, 0, 0, 0)

        hlayout.addWidget(self.progress_widget)
        hlayout.addWidget(self.cancel_button)
        vlayout.addLayout(hlayout)

        self.pathlabel = TextLabel()
        self.pathlabel.setTextElideMode(Qt.ElideMiddle)
        self.pathlabel.setAttribute(Qt.WA_MacSmallSize)

        vlayout.addWidget(self.pathlabel)
        w.setLayout(vlayout)

        self.infostack.addWidget(self.info_area)
        self.infostack.addWidget(w)

        box.layout().addWidget(self.infostack)

        self.__initRecentItemsModel()
        self.__invalidated = True
        self.__executor = ThreadExecutor(self)

        QApplication.postEvent(self, QEvent(RuntimeEvent.Init))
    def __init__(self):
        super().__init__()
        #: widget's runtime state
        self.__state = State.NoState
        self.corpus = None
        self.n_text_categories = 0
        self.n_text_data = 0
        self.skipped_documents = []

        self.__invalidated = False
        self.__pendingTask = None

        layout = QGridLayout()
        layout.setSpacing(4)
        gui.widgetBox(self.controlArea, orientation=layout, box='Source')
        source_box = gui.radioButtons(None, self, "source", box=True,
                                      callback=self.start, addToLayout=False)
        rb_button = gui.appendRadioButton(source_box, "Folder:",
                                          addToLayout=False)
        layout.addWidget(rb_button, 0, 0, Qt.AlignVCenter)

        box = gui.hBox(None, addToLayout=False, margin=0)
        box.setSizePolicy(QSizePolicy.MinimumExpanding, QSizePolicy.Fixed)

        self.recent_cb = QComboBox(
            sizeAdjustPolicy=QComboBox.AdjustToMinimumContentsLengthWithIcon,
            minimumContentsLength=16,
            acceptDrops=True
        )
        self.recent_cb.installEventFilter(self)
        self.recent_cb.activated[int].connect(self.__onRecentActivated)

        browseaction = QAction(
            "Open/Load Documents", self,
            iconText="\N{HORIZONTAL ELLIPSIS}",
            icon=self.style().standardIcon(QStyle.SP_DirOpenIcon),
            toolTip="Select a folder from which to load the documents"
        )
        browseaction.triggered.connect(self.__runOpenDialog)
        reloadaction = QAction(
            "Reload", self,
            icon=self.style().standardIcon(QStyle.SP_BrowserReload),
            toolTip="Reload current document set"
        )
        reloadaction.triggered.connect(self.reload)
        self.__actions = namespace(
            browse=browseaction,
            reload=reloadaction,
        )

        browsebutton = QPushButton(
            browseaction.iconText(),
            icon=browseaction.icon(),
            toolTip=browseaction.toolTip(),
            clicked=browseaction.trigger,
            default=False,
            autoDefault=False,
        )
        reloadbutton = QPushButton(
            reloadaction.iconText(),
            icon=reloadaction.icon(),
            clicked=reloadaction.trigger,
            default=False,
            autoDefault=False,
        )
        box.layout().addWidget(self.recent_cb)
        layout.addWidget(box, 0, 1)
        layout.addWidget(browsebutton, 0, 2)
        layout.addWidget(reloadbutton, 0, 3)

        rb_button = gui.appendRadioButton(source_box, "URL:", addToLayout=False)
        layout.addWidget(rb_button, 3, 0, Qt.AlignVCenter)

        self.url_combo = url_combo = QComboBox()
        url_model = PyListModel()
        url_model.wrap(self.recent_urls)
        url_combo.setLineEdit(LineEditSelectOnFocus())
        url_combo.setModel(url_model)
        url_combo.setSizePolicy(QSizePolicy.Ignored, QSizePolicy.Fixed)
        url_combo.setEditable(True)
        url_combo.setInsertPolicy(url_combo.InsertAtTop)
        url_edit = url_combo.lineEdit()
        l, t, r, b = url_edit.getTextMargins()
        url_edit.setTextMargins(l + 5, t, r, b)
        layout.addWidget(url_combo, 3, 1, 1, 3)
        url_combo.activated.connect(self._url_set)
        # whit completer we set that combo box is case sensitive when
        # matching the history
        completer = QCompleter()
        completer.setCaseSensitivity(Qt.CaseSensitive)
        url_combo.setCompleter(completer)

        self.addActions([browseaction, reloadaction])

        reloadaction.changed.connect(
            lambda: reloadbutton.setEnabled(reloadaction.isEnabled())
        )
        box = gui.vBox(self.controlArea, "Info")
        self.infostack = QStackedWidget()

        self.info_area = QLabel(
            text="No document set selected",
            wordWrap=True
        )
        self.progress_widget = QProgressBar(
            minimum=0, maximum=100
        )
        self.cancel_button = QPushButton(
            "Cancel",
            icon=self.style().standardIcon(QStyle.SP_DialogCancelButton),
            default=False,
            autoDefault=False,
        )
        self.cancel_button.clicked.connect(self.cancel)

        w = QWidget()
        vlayout = QVBoxLayout()
        vlayout.setContentsMargins(0, 0, 0, 0)
        hlayout = QHBoxLayout()
        hlayout.setContentsMargins(0, 0, 0, 0)

        hlayout.addWidget(self.progress_widget)
        hlayout.addWidget(self.cancel_button)
        vlayout.addLayout(hlayout)

        self.pathlabel = TextLabel()
        self.pathlabel.setTextElideMode(Qt.ElideMiddle)
        self.pathlabel.setAttribute(Qt.WA_MacSmallSize)

        vlayout.addWidget(self.pathlabel)
        w.setLayout(vlayout)

        self.infostack.addWidget(self.info_area)
        self.infostack.addWidget(w)

        box.layout().addWidget(self.infostack)

        self.__initRecentItemsModel()
        self.__invalidated = True
        self.__executor = ThreadExecutor(self)

        QApplication.postEvent(self, QEvent(RuntimeEvent.Init))