Module javafx.controls
Package javafx.scene.control

Class TableColumnBase<S,T>

  • Type Parameters:
    S - The type of the UI control (e.g. the type of the 'row').
    T - The type of the content in all cells in this table column.
    All Implemented Interfaces:
    Styleable, EventTarget
    Direct Known Subclasses:
    TableColumn, TreeTableColumn
    @IDProperty("id")
public abstract class TableColumnBase<S,T>
extends Object
implements EventTarget, Styleable
    Table-like controls (such as TableView and TreeTableView) are made up of zero or more instances of a concrete TableColumnBase subclass (TableColumn and TreeTableColumn, respectively). Each table column in a table is responsible for displaying (and editing) the contents of that column. As well as being responsible for displaying and editing data for a single column, a table column also contains the necessary properties to: When instantiating a concrete subclass of TableColumnBase, perhaps the two most important properties to set are the column text (what to show in the column header area), and the column cell value factory (which is used to populate individual cells in the column). Refer to the class documentation for TableColumn and TreeTableColumn for more information.
    Since:
    JavaFX 8.0
    See Also:
    TableColumn, TreeTableColumn, TablePositionBase

    • Property Detail

      • parentColumn

        public final ReadOnlyObjectProperty<TableColumnBase<S,?>> parentColumnProperty
        This read-only property will always refer to the parent of this column, in the situation where nested columns are being used.

        In the currently existing subclasses, to create a nested column is simply a matter of placing the relevant TableColumnBase instances inside the columns ObservableList (for example, see getColumns() and getColumns().

        See Also:
        getParentColumn()

      • id

        public final StringProperty idProperty
        The id of this TableColumnBase. This simple string identifier is useful for finding a specific TableColumnBase within a UI control that uses TableColumnBase instances. The default value is null.
        Default value:
        null
        See Also:
        Styleable.getId(), setId(String)

      • style

        public final StringProperty styleProperty
        A string representation of the CSS style associated with this TableColumnBase instance. This is analogous to the "style" attribute of an HTML element. Note that, like the HTML style attribute, this variable contains style properties and values and not the selector portion of a style rule.

        Parsing this style might not be supported on some limited platforms. It is recommended to use a standalone CSS file instead.

        Default value:
        empty string
        See Also:
        Styleable.getStyle(), setStyle(String)

      • sortNode

        public final ObjectProperty<Node> sortNodeProperty

        The node to use as the "sort arrow", shown to the user in situations where the table column is part of the sort order. It may be the only item in the sort order, or it may be a secondary, tertiary, or latter sort item, and the node should reflect this visually. This is only used in the case of the table column being in the sort order (refer to, for example, TableView.getSortOrder() and TreeTableView.getSortOrder()). If not specified, the table column skin implementation is responsible for providing a default sort node.

        The sort node is commonly seen represented as a triangle that rotates on screen to indicate whether the table column is part of the sort order, and if so, whether the sort is ascending or descending, and what position in the sort order it is in.

        See Also:
        getSortNode(), setSortNode(Node)

      • width

        public final ReadOnlyDoubleProperty widthProperty
        The width of this column. Modifying this will result in the column width adjusting visually. It is recommended to not bind this property to an external property, as that will result in the column width not being adjustable by the user through dragging the left and right borders of column headers.
        See Also:
        getWidth()

      • sortable

        public final BooleanProperty sortableProperty

        A boolean property to toggle on and off the 'sortability' of this column. When this property is true, this column can be included in sort operations. If this property is false, it will not be included in sort operations, even if it is contained within the sort order list of the underlying UI control (e.g. TableView.getSortOrder() or TreeTableView.getSortOrder()).

        For example, iIf a TableColumn instance is contained within the TableView sortOrder ObservableList, and its sortable property toggles state, it will force the TableView to perform a sort, as it is likely the view will need updating.

        See Also:
        isSortable(), setSortable(boolean)

      • reorderable

        public final BooleanProperty reorderableProperty
        A boolean property to toggle on and off the 'reorderability' of this column (with drag and drop - reordering by modifying the appropriate columns list is always allowed). When this property is true, this column can be reordered by users simply by dragging and dropping the columns into their desired positions. When this property is false, this ability to drag and drop columns is not available.
        Since:
        9
        See Also:
        isReorderable(), setReorderable(boolean)

    • Constructor Detail

      • TableColumnBase

        protected TableColumnBase()
        Creates a default TableColumn with default cell factory, comparator, and onEditCommit implementation.

      • TableColumnBase

        protected TableColumnBase​(String text)
        Creates a TableColumn with the text set to the provided string, with default cell factory, comparator, and onEditCommit implementation.
        Parameters:
        text - The string to show when the TableColumn is placed within the TableView.

    • Method Detail

      • setText

        public final void setText​(String value)
        Sets the value of the property text.
        Property description:
        This is the text to show in the header for this column.

      • getText

        public final String getText()
        Gets the value of the property text.
        Property description:
        This is the text to show in the header for this column.

      • setVisible

        public final void setVisible​(boolean value)
        Sets the value of the property visible.
        Property description:
        Toggling this will immediately toggle the visibility of this column, and all children columns.

      • isVisible

        public final boolean isVisible()
        Gets the value of the property visible.
        Property description:
        Toggling this will immediately toggle the visibility of this column, and all children columns.

      • getParentColumn

        public final TableColumnBase<S,?> getParentColumn()
        Gets the value of the property parentColumn.
        Property description:
        This read-only property will always refer to the parent of this column, in the situation where nested columns are being used.

        In the currently existing subclasses, to create a nested column is simply a matter of placing the relevant TableColumnBase instances inside the columns ObservableList (for example, see getColumns() and getColumns().

      • parentColumnProperty

        public final ReadOnlyObjectProperty<TableColumnBase<S,?>> parentColumnProperty()
        This read-only property will always refer to the parent of this column, in the situation where nested columns are being used.

        In the currently existing subclasses, to create a nested column is simply a matter of placing the relevant TableColumnBase instances inside the columns ObservableList (for example, see getColumns() and getColumns().

        See Also:
        getParentColumn()

      • setContextMenu

        public final void setContextMenu​(ContextMenu value)
        Sets the value of the property contextMenu.
        Property description:
        This menu will be shown whenever the user right clicks within the header area of this TableColumnBase.

      • getContextMenu

        public final ContextMenu getContextMenu()
        Gets the value of the property contextMenu.
        Property description:
        This menu will be shown whenever the user right clicks within the header area of this TableColumnBase.

      • setId

        public final void setId​(String value)
        Sets the value of the property id.
        Property description:
        The id of this TableColumnBase. This simple string identifier is useful for finding a specific TableColumnBase within a UI control that uses TableColumnBase instances. The default value is null.
        Default value:
        null

      • idProperty

        public final StringProperty idProperty()
        The id of this TableColumnBase. This simple string identifier is useful for finding a specific TableColumnBase within a UI control that uses TableColumnBase instances. The default value is null.
        Default value:
        null
        See Also:
        Styleable.getId(), setId(String)

      • setStyle

        public final void setStyle​(String value)
        Sets the value of the property style.
        Property description:
        A string representation of the CSS style associated with this TableColumnBase instance. This is analogous to the "style" attribute of an HTML element. Note that, like the HTML style attribute, this variable contains style properties and values and not the selector portion of a style rule.

        Parsing this style might not be supported on some limited platforms. It is recommended to use a standalone CSS file instead.

        Default value:
        empty string

      • styleProperty

        public final StringProperty styleProperty()
        A string representation of the CSS style associated with this TableColumnBase instance. This is analogous to the "style" attribute of an HTML element. Note that, like the HTML style attribute, this variable contains style properties and values and not the selector portion of a style rule.

        Parsing this style might not be supported on some limited platforms. It is recommended to use a standalone CSS file instead.

        Default value:
        empty string
        See Also:
        Styleable.getStyle(), setStyle(String)

      • getStyleClass

        public ObservableList<String> getStyleClass()
        A list of String identifiers which can be used to logically group Nodes, specifically for an external style engine. This variable is analogous to the "class" attribute on an HTML element and, as such, each element of the list is a style class to which this Node belongs.
        Specified by:
        getStyleClass in interface Styleable
        Returns:
        a list of String identifiers which can be used to logically group Nodes, specifically for an external style engine
        See Also:
        CSS3 class selectors

      • setGraphic

        public final void setGraphic​(Node value)
        Sets the value of the property graphic.
        Property description:

        The graphic to show in the table column to allow the user to indicate graphically what is in the column.

      • getGraphic

        public final Node getGraphic()
        Gets the value of the property graphic.
        Property description:

        The graphic to show in the table column to allow the user to indicate graphically what is in the column.

      • setSortNode

        public final void setSortNode​(Node value)
        Sets the value of the property sortNode.
        Property description:

        The node to use as the "sort arrow", shown to the user in situations where the table column is part of the sort order. It may be the only item in the sort order, or it may be a secondary, tertiary, or latter sort item, and the node should reflect this visually. This is only used in the case of the table column being in the sort order (refer to, for example, TableView.getSortOrder() and TreeTableView.getSortOrder()). If not specified, the table column skin implementation is responsible for providing a default sort node.

        The sort node is commonly seen represented as a triangle that rotates on screen to indicate whether the table column is part of the sort order, and if so, whether the sort is ascending or descending, and what position in the sort order it is in.

      • getSortNode

        public final Node getSortNode()
        Gets the value of the property sortNode.
        Property description:

        The node to use as the "sort arrow", shown to the user in situations where the table column is part of the sort order. It may be the only item in the sort order, or it may be a secondary, tertiary, or latter sort item, and the node should reflect this visually. This is only used in the case of the table column being in the sort order (refer to, for example, TableView.getSortOrder() and TreeTableView.getSortOrder()). If not specified, the table column skin implementation is responsible for providing a default sort node.

        The sort node is commonly seen represented as a triangle that rotates on screen to indicate whether the table column is part of the sort order, and if so, whether the sort is ascending or descending, and what position in the sort order it is in.

      • sortNodeProperty

        public final ObjectProperty<Node> sortNodeProperty()

        The node to use as the "sort arrow", shown to the user in situations where the table column is part of the sort order. It may be the only item in the sort order, or it may be a secondary, tertiary, or latter sort item, and the node should reflect this visually. This is only used in the case of the table column being in the sort order (refer to, for example, TableView.getSortOrder() and TreeTableView.getSortOrder()). If not specified, the table column skin implementation is responsible for providing a default sort node.

        The sort node is commonly seen represented as a triangle that rotates on screen to indicate whether the table column is part of the sort order, and if so, whether the sort is ascending or descending, and what position in the sort order it is in.

        See Also:
        getSortNode(), setSortNode(Node)

      • widthProperty

        public final ReadOnlyDoubleProperty widthProperty()
        The width of this column. Modifying this will result in the column width adjusting visually. It is recommended to not bind this property to an external property, as that will result in the column width not being adjustable by the user through dragging the left and right borders of column headers.
        See Also:
        getWidth()

      • getWidth

        public final double getWidth()
        Gets the value of the property width.
        Property description:
        The width of this column. Modifying this will result in the column width adjusting visually. It is recommended to not bind this property to an external property, as that will result in the column width not being adjustable by the user through dragging the left and right borders of column headers.

      • setMinWidth

        public final void setMinWidth​(double value)
        Sets the value of the property minWidth.
        Property description:
        The minimum width the table column is permitted to be resized to.

      • getMinWidth

        public final double getMinWidth()
        Gets the value of the property minWidth.
        Property description:
        The minimum width the table column is permitted to be resized to.

      • setPrefWidth

        public final void setPrefWidth​(double value)
        Sets the value of the property prefWidth.
        Property description:
        The preferred width of the TableColumn.

      • getPrefWidth

        public final double getPrefWidth()
        Gets the value of the property prefWidth.
        Property description:
        The preferred width of the TableColumn.

      • setMaxWidth

        public final void setMaxWidth​(double value)
        Sets the value of the property maxWidth.
        Property description:
        The maximum width the table column is permitted to be resized to.

      • getMaxWidth

        public final double getMaxWidth()
        Gets the value of the property maxWidth.
        Property description:
        The maximum width the table column is permitted to be resized to.

      • setResizable

        public final void setResizable​(boolean value)
        Sets the value of the property resizable.
        Property description:
        Used to indicate whether the width of this column can change. It is up to the resizing policy to enforce this however.

      • isResizable

        public final boolean isResizable()
        Gets the value of the property resizable.
        Property description:
        Used to indicate whether the width of this column can change. It is up to the resizing policy to enforce this however.

      • sortableProperty

        public final BooleanProperty sortableProperty()

        A boolean property to toggle on and off the 'sortability' of this column. When this property is true, this column can be included in sort operations. If this property is false, it will not be included in sort operations, even if it is contained within the sort order list of the underlying UI control (e.g. TableView.getSortOrder() or TreeTableView.getSortOrder()).

        For example, iIf a TableColumn instance is contained within the TableView sortOrder ObservableList, and its sortable property toggles state, it will force the TableView to perform a sort, as it is likely the view will need updating.

        See Also:
        isSortable(), setSortable(boolean)

      • setSortable

        public final void setSortable​(boolean value)
        Sets the value of the property sortable.
        Property description:

        A boolean property to toggle on and off the 'sortability' of this column. When this property is true, this column can be included in sort operations. If this property is false, it will not be included in sort operations, even if it is contained within the sort order list of the underlying UI control (e.g. TableView.getSortOrder() or TreeTableView.getSortOrder()).

        For example, iIf a TableColumn instance is contained within the TableView sortOrder ObservableList, and its sortable property toggles state, it will force the TableView to perform a sort, as it is likely the view will need updating.

      • isSortable

        public final boolean isSortable()
        Gets the value of the property sortable.
        Property description:

        A boolean property to toggle on and off the 'sortability' of this column. When this property is true, this column can be included in sort operations. If this property is false, it will not be included in sort operations, even if it is contained within the sort order list of the underlying UI control (e.g. TableView.getSortOrder() or TreeTableView.getSortOrder()).

        For example, iIf a TableColumn instance is contained within the TableView sortOrder ObservableList, and its sortable property toggles state, it will force the TableView to perform a sort, as it is likely the view will need updating.

      • reorderableProperty

        public final BooleanProperty reorderableProperty()
        A boolean property to toggle on and off the 'reorderability' of this column (with drag and drop - reordering by modifying the appropriate columns list is always allowed). When this property is true, this column can be reordered by users simply by dragging and dropping the columns into their desired positions. When this property is false, this ability to drag and drop columns is not available.
        Since:
        9
        See Also:
        isReorderable(), setReorderable(boolean)

      • setReorderable

        public final void setReorderable​(boolean value)
        Sets the value of the property reorderable.
        Property description:
        A boolean property to toggle on and off the 'reorderability' of this column (with drag and drop - reordering by modifying the appropriate columns list is always allowed). When this property is true, this column can be reordered by users simply by dragging and dropping the columns into their desired positions. When this property is false, this ability to drag and drop columns is not available.
        Since:
        9

      • isReorderable

        public final boolean isReorderable()
        Gets the value of the property reorderable.
        Property description:
        A boolean property to toggle on and off the 'reorderability' of this column (with drag and drop - reordering by modifying the appropriate columns list is always allowed). When this property is true, this column can be reordered by users simply by dragging and dropping the columns into their desired positions. When this property is false, this ability to drag and drop columns is not available.
        Since:
        9

      • setComparator

        public final void setComparator​(Comparator<T> value)
        Sets the value of the property comparator.
        Property description:
        Comparator function used when sorting this table column. The two Objects given as arguments are the cell data for two individual cells in this column.

      • getComparator

        public final Comparator<T> getComparator()
        Gets the value of the property comparator.
        Property description:
        Comparator function used when sorting this table column. The two Objects given as arguments are the cell data for two individual cells in this column.

      • getProperties

        public final ObservableMap<Object,Object> getProperties()
        Returns an observable map of properties on this table column for use primarily by application developers.
        Returns:
        an observable map of properties on this table column for use primarily by application developers

      • hasProperties

        public boolean hasProperties()
        Tests if this table column has properties.
        Returns:
        true if node has properties.

      • setUserData

        public void setUserData​(Object value)
        Convenience method for setting a single Object property that can be retrieved at a later date. This is functionally equivalent to calling the getProperties().put(Object key, Object value) method. This can later be retrieved by calling getUserData().
        Parameters:
        value - The value to be stored - this can later be retrieved by calling getUserData().

      • getUserData

        public Object getUserData()
        Returns a previously set Object property, or null if no such property has been set using the setUserData(java.lang.Object) method.
        Returns:
        The Object that was previously set, or null if no property has been set or if null was set.

      • getColumns

        public abstract ObservableList<? extends TableColumnBase<S,?>> getColumns()
        This enables support for nested columns, which can be useful to group together related data. For example, we may have a 'Name' column with two nested columns for 'First' and 'Last' names.

        This has no impact on the table as such - all column indices point to the leaf columns only, and it isn't possible to sort using the parent column, just the leaf columns. In other words, this is purely a visual feature.

        Returns:
        An ObservableList containing TableColumnBase instances (or subclasses) that are the children of this TableColumnBase. If these children TableColumnBase instances are set as visible, they will appear beneath this table column.

      • getCellData

        public final T getCellData​(int index)
        Returns the actual value for a cell at a given row index (and which belongs to this table column).
        Parameters:
        index - The row index for which the data is required.
        Returns:
        The data that belongs to the cell at the intersection of the given row index and the table column that this method is called on.

      • getCellData

        public final T getCellData​(S item)
        Returns the actual value for a cell from the given item.
        Parameters:
        item - The item from which a value of type T should be extracted.
        Returns:
        The data that should be used in a specific cell in this column, based on the item passed in as an argument.

      • getCellObservableValue

        public abstract ObservableValue<T> getCellObservableValue​(int index)
        Attempts to return an ObservableValue<T> for the item in the given index (which is of type S). In other words, this method expects to receive an integer value that is greater than or equal to zero, and less than the size of the underlying data model. If the index is valid, this method will return an ObservableValue<T> for this specific column.

        This is achieved by calling the cell value factory, and returning whatever it returns when passed a CellDataFeatures (see, for example, the CellDataFeatures classes belonging to TableColumn and TreeTableColumn for more information).

        Parameters:
        index - The index of the item (of type S) for which an ObservableValue<T> is sought.
        Returns:
        An ObservableValue<T> for this specific table column.

      • getCellObservableValue

        public abstract ObservableValue<T> getCellObservableValue​(S item)
        Attempts to return an ObservableValue<T> for the given item (which is of type S). In other words, this method expects to receive an object from the underlying data model for the entire 'row' in the table, and it must return an ObservableValue<T> for the value in this specific column.

        This is achieved by calling the cell value factory, and returning whatever it returns when passed a CellDataFeatures (see, for example, the CellDataFeatures classes belonging to TableColumn and TreeTableColumn for more information).

        Parameters:
        item - The item (of type S) for which an ObservableValue<T> is sought.
        Returns:
        An ObservableValue<T> for this specific table column.

      • addEventHandler

        public <E extends Event> void addEventHandler​(EventType<E> eventType,
                                              EventHandler<E> eventHandler)
        Registers an event handler to this table column. The TableColumnBase class allows registration of listeners which will be notified when editing occurs. Note however that TableColumnBase is not a Node, and therefore no visual events will be fired on it.
        Type Parameters:
        E - The type of event
        Parameters:
        eventType - the type of the events to receive by the handler
        eventHandler - the handler to register
        Throws:
        NullPointerException - if the event type or handler is null

      • removeEventHandler

        public <E extends Event> void removeEventHandler​(EventType<E> eventType,
                                                 EventHandler<E> eventHandler)
        Unregisters a previously registered event handler from this table column. One handler might have been registered for different event types, so the caller needs to specify the particular event type from which to unregister the handler.
        Type Parameters:
        E - The type of event
        Parameters:
        eventType - the event type from which to unregister
        eventHandler - the handler to unregister
        Throws:
        NullPointerException - if the event type or handler is null