DataRow2 继承自： ft.DataRow, Control, BaseControl

继承自 DataRow，额外增加了行级别的 tap 事件。

此外还有 on_secondary_tap 与 on_secondary_tap_down 事件，它们在 DataCell 中不可用，在桌面端用于处理右键操作时会很有用。

属性

名称	类型	默认值	说明
decoration	Optional[ft.BoxDecoration]	None	Decoration to be applied to this row. Note: If provided, divider_thickness has no effect.
specific_row_height	Optional[ft.Number]	None	Specific row height. Falls back to data_row_height if not set.
cells	Annotated[list[DataCell], V.visible_controls(min_count=1)]	[]	The data for this row: a list of DataCell controls. Note: There must be exactly as many cells as there are visible columns in the table. Raises: ValueError: If it does not contain at least one visible DataCell.
color	Optional[ControlStateValue[ColorValue]]	None	The color of this row. By default, the color is transparent unless selected. Selected rows has a grey translucent color. The effective color can depend on the ControlState state, if the row is selected, pressed, hovered, focused, disabled or enabled. The color is painted as an overlay to the row. To make sure that the row's InkWell is visible (when pressed, hovered and focused), it is recommended to use a translucent color.
selected	bool	False	Whether the row is selected. If on_select_change is non-null for any row in the table, then a checkbox is shown at the start of each row. If the row is selected (True), the checkbox will be checked and the row will be highlighted. Otherwise, the checkbox, if present, will not be checked.
expand	Annotated[Optional[Union[bool, int]], V.instance_of((bool, int))]	None	指定此控件是否/如何扩展以填充父布局中的可用空间。 详见 此处. Note: Has effect only if the direct parent of this control is one of the following controls, or their subclasses: Column, Row, View, Page. Raises: ValueError: If it is not of type bool or int.
expand_loose	bool	False	允许控件在主轴方向上有可用空间时扩展，但不要求填满所有可用空间。 详见 此处. Note: 若 expand_loose 为 True，则仅当同时满足以下条件时生效： - expand 不为 None，且 - the direct parent of this control is one of the following controls, or their subclasses: Column, Row, View, Page.
col	ResponsiveNumber	12	若此控件的父控件是 ResponsiveRow，此属性用于决定该控件横跨多少个虚拟列。 可以是数字，也可以是为不同断点配置不同值的字典，例如 col={"sm": 6}。 0 表示在该断点下隐藏控件，不占用任何列。 默认横跨 12 个虚拟列。 \
opacity	Annotated[Number, V.between(0.0, 1.0)]	1.0	定义控件的透明度，取值范围 0.0（完全透明）到 1.0（完全不透明）。 抛出异常：ValueError：若不在 0.0 到 1.0 的闭区间内。
tooltip	Optional[TooltipValue]	None	鼠标悬停时显示的 tooltip。
badge	Optional[BadgeValue]	None	显示在控件顶部的徽标。
visible	bool	True	Every control has visible property which is True by default - control is rendered on the page. Setting visible to False 完全阻止该控件（及其所有子控件）渲染到页面画布上. 隐藏的控件不能通过键盘或鼠标聚焦或选中，也不会触发任何事件。
disabled	bool	False	Every control has disabled property which is False by default - control and all its children are enabled. Note: The value of this property will be propagated down to all children controls recursively. Example: For example, if you have a form with multiple entry controls you can disable them all together by disabling container: python ft.Column( disabled = True, controls=[ ft.TextField(), ft.TextField() ] )
rtl	bool	False	控件的文字方向是否为从右到左（RTL）。
data	Any	skip_	任意类型的自定义数据。
key	Optional['KeyValue']	None	用于在更新之间保持控件身份稳定的 key。

只读属性

名称	类型	默认值	说明
parent	Optional['BaseControl']	—	The direct ancestor(parent) of this control. It defaults to None and will only have a value when this control is mounted (added to the page tree). Page 控件（树的根）为例外 —— 它始终 parent=None。
page	'Page'	—	此控件所属的页面。

事件

名称	类型	默认值	说明
on_double_tap	Optional[ft.ControlEventHandler['DataRow2']]	None	Fires when the row is double-tapped. Note: Won't be called if tapped cell has any tap event handlers (on_tap, on_double_tap, on_long_press, on_tap_cancel, on_tap_down) set.
on_secondary_tap	Optional[ft.ControlEventHandler['DataRow2']]	None	Fires when the row is right-clicked (secondary tap). Note: Won't be called if tapped cell has any tap event handlers (on_tap, on_double_tap, on_long_press, on_tap_cancel, on_tap_down) set.
on_secondary_tap_down	Optional[ft.ControlEventHandler['DataRow2']]	None	Fires when the row is right-clicked (secondary tap down). Note: Won't be called if tapped cell has any tap event handlers (on_tap, on_double_tap, on_long_press, on_tap_cancel, on_tap_down) set.
on_tap	Optional[ft.EventHandler[ft.TapEvent['DataRow2']]]	None	Fires when the row is tapped. Note: Won't be called if tapped cell has any tap event handlers (on_tap, on_double_tap, on_long_press, on_tap_cancel, on_tap_down) set.
on_long_press	Optional[ControlEventHandler['DataRow']]	None	Called when this row is long-pressed. If a DataCell in the row has its on_tap, on_double_tap, on_long_press, on_tap_cancel or on_tap_down callback defined, that callback behavior overrides the gesture behavior of the row for that particular cell.
on_select_change	Optional[ControlEventHandler['DataRow']]	None	Called when the user selects or unselects a selectable row. If this is not null, then this row is selectable. The current selection state of this row is given by selected. If any row is selectable, then the table's heading row will have a checkbox that can be checked to select all selectable rows (and which is checked if all the rows are selected), and each subsequent row will have a checkbox to toggle just that row. A row whose on_select_change callback is null is ignored for the purposes of determining the state of the "all" checkbox, and its checkbox is disabled. If a DataCell in the row has its on_tap callback defined, that callback behavior overrides the gesture behavior of the row for that particular cell.

方法

名称	类型	默认值	说明
is_isolated	—	—	Return whether this control is marked as isolated. 被隔离的控件不会参与父级驱动的更新遍历，需要自行管理更新边界。
init	—	—	Called after control instance initialization and before the first build / update cycle. 可重写此钩子执行依赖于已初始化字段的轻量设置。 不要在这里调用 update()。
build	—	—	在控件初始化期间调用一次，用于定义其子控件。 page 属性在此方法中可用。
before_update	—	—	每次控件即将更新时调用。 Note: 不要在此处调用 update()。
before_event	—	—	在事件处理器执行前拦截事件。 返回 False 取消分发，返回 True 或 None 则继续正常的事件处理。
did_mount	—	—	在控件挂载到页面树之后调用。 可重写以启动需要已挂载页面的资源，例如订阅、定时器或服务监听。
will_unmount	—	—	在控件从页面树移除之前调用。 可重写以释放 did_mount() 中创建的资源，例如订阅、定时器或外部句柄。
get_data_channel	—	—	Resolve the [DataChannel] allocated on the Dart side for this widget. Pattern: on_data_channel_open: Optional[ft.EventHandler[DataChannelOpenEvent]] = None def init(self): self.on_data_channel_open = self._on_open def _on_open(self, e): self._channel = self.get_data_channel(e.channel_id) Idempotent — the underlying Connection caches DataChannels by id, so repeated calls return the same instance. No error path: the id always comes from a framework-fired event, so by the time this runs the channel exists on both sides.
update	None	—	请求更新该控件的 UI。 在修改控件状态或属性后调用。 控件必须已挂载到页面，并且未被冻结。