Class ViewerRow

  • All Implemented Interfaces:
    Cloneable
    Direct Known Subclasses:
    TableViewerRow, TreeViewerRow

    public abstract class ViewerRow
    extends Object
    implements Cloneable
    ViewerRow is the abstract superclass of the part that represents items in a Table or Tree. Implementors of ColumnViewer have to provide a concrete implementation for the underlying widget
    Since:
    3.3
    • Field Summary

      Fields 
      Modifier and Type Field Description
      static int ABOVE
      Constant denoting the row above the current one (value is 1).
      static int BELOW
      Constant denoting the row below the current one (value is 2).
    • Constructor Summary

      Constructors 
      Constructor Description
      ViewerRow()  
    • Constructor Detail

      • ViewerRow

        public ViewerRow()
    • Method Detail

      • getBounds

        public abstract Rectangle getBounds​(int columnIndex)
        Get the bounds of the entry at the columnIndex,
        Parameters:
        columnIndex -
        Returns:
        Rectangle
      • getBounds

        public abstract Rectangle getBounds()
        Return the bounds for the whole item.
        Returns:
        Rectangle
      • getItem

        public abstract Widget getItem()
        Return the item for the receiver.
        Returns:
        Widget
      • getColumnCount

        public abstract int getColumnCount()
        Return the number of columns for the receiver.
        Returns:
        the number of columns
      • getImage

        public abstract Image getImage​(int columnIndex)
        Return the image at the columnIndex.
        Parameters:
        columnIndex -
        Returns:
        Image or null
      • setImage

        public abstract void setImage​(int columnIndex,
                                      Image image)
        Set the image at the columnIndex
        Parameters:
        columnIndex -
        image -
      • getText

        public abstract String getText​(int columnIndex)
        Get the text at the columnIndex.
        Parameters:
        columnIndex -
        Returns:
        String
      • setText

        public abstract void setText​(int columnIndex,
                                     String text)
        Set the text at the columnIndex
        Parameters:
        columnIndex -
        text -
      • getBackground

        public abstract Color getBackground​(int columnIndex)
        Get the background at the columnIndex,
        Parameters:
        columnIndex -
        Returns:
        Color or null
      • setBackground

        public abstract void setBackground​(int columnIndex,
                                           Color color)
        Set the background at the columnIndex.
        Parameters:
        columnIndex -
        color -
      • getForeground

        public abstract Color getForeground​(int columnIndex)
        Get the foreground at the columnIndex.
        Parameters:
        columnIndex -
        Returns:
        Color or null
      • setForeground

        public abstract void setForeground​(int columnIndex,
                                           Color color)
        Set the foreground at the columnIndex.
        Parameters:
        columnIndex -
        color -
      • getFont

        public abstract Font getFont​(int columnIndex)
        Get the font at the columnIndex.
        Parameters:
        columnIndex -
        Returns:
        Font or null
      • setFont

        public abstract void setFont​(int columnIndex,
                                     Font font)
        Set the Font at the columnIndex.
        Parameters:
        columnIndex -
        font -
      • getCell

        public ViewerCell getCell​(Point point)
        Get the ViewerCell at point.
        Parameters:
        point -
        Returns:
        ViewerCell or null if the point is not in the bounds of a cell
      • getColumnIndex

        public int getColumnIndex​(Point point)
        Get the columnIndex of the point.
        Parameters:
        point -
        Returns:
        int or -1 if it cannot be found.
      • getCell

        public ViewerCell getCell​(int column)
        Get a ViewerCell for the column at index.
        Parameters:
        column -
        Returns:
        ViewerCell or null if the index is negative.
      • getControl

        public abstract Control getControl()
        Get the Control for the receiver.
        Returns:
        Control
      • getNeighbor

        public abstract ViewerRow getNeighbor​(int direction,
                                              boolean sameLevel)
        Returns a neighboring row, or null if no neighbor exists in the given direction. If sameLevel is true, only sibling rows (under the same parent) will be considered.
        Parameters:
        direction - the direction BELOW or ABOVE
        sameLevel - if true, search only within sibling rows
        Returns:
        the row above/below, or null if not found
      • getTreePath

        public abstract TreePath getTreePath()
        The tree path used to identify an element by the unique path
        Returns:
        the path
      • getElement

        public abstract Object getElement()
        Returns:
        the model element
      • hashCode

        public int hashCode()
        Overrides:
        hashCode in class Object
      • getVisualIndex

        protected int getVisualIndex​(int creationIndex)
        Translate the original column index to the actual one.

        Because of backwards API compatibility the default implementation returns the original index. Implementators of ColumnViewer should overwrite this method if their widget supports reordered columns

        Parameters:
        creationIndex - the original index
        Returns:
        the current index (as shown in the UI)
        Since:
        3.4
      • getCreationIndex

        protected int getCreationIndex​(int visualIndex)
        Translate the current column index (as shown in the UI) to the original one.

        Because of backwards API compatibility the default implementation returns the original index. Implementators of ColumnViewer should overwrite this method if their widget supports reordered columns

        Parameters:
        visualIndex - the current index (as shown in the UI)
        Returns:
        the original index
        Since:
        3.4
      • getTextBounds

        public Rectangle getTextBounds​(int index)
        The location and bounds of the area where the text is drawn depends on various things (image displayed, control with SWT.CHECK)
        Parameters:
        index - the column index
        Returns:
        the bounds of the of the text area. May return null if the underlying widget implementation doesn't provide this information
        Since:
        3.4
      • getImageBounds

        public Rectangle getImageBounds​(int index)
        Returns the location and bounds of the area where the image is drawn.
        Parameters:
        index - the column index
        Returns:
        the bounds of the of the image area. May return null if the underlying widget implementation doesn't provide this information
        Since:
        3.4
      • setStyleRanges

        public void setStyleRanges​(int columnIndex,
                                   StyleRange[] styleRanges)
        Set the style ranges to be applied on the text label at the column index Note: Requires StyledCellLabelProvider with owner draw enabled.
        Parameters:
        columnIndex - the index of the column
        styleRanges - the styled ranges
        Since:
        3.4
      • getStyleRanges

        public StyleRange[] getStyleRanges​(int columnIndex)
        Returns the style ranges to be applied on the text label at the column index or null if no style ranges have been set.
        Parameters:
        columnIndex - the index of the column
        Returns:
        styleRanges the styled ranges
        Since:
        3.4
      • scrollCellIntoView

        protected boolean scrollCellIntoView​(int columnIndex)
        Scrolls the cell at this index into view

        Because of backwards API compatibility the default implementation is a no-op. Implementators of ColumnViewer should overwrite this method if their widget supports reordered columns

        Parameters:
        columnIndex - the column index
        Returns:
        return true when the cell is scrolled into view
        Since:
        3.5
      • isColumnVisible

        protected boolean isColumnVisible​(int columnIndex)
        Returns true if the column with the given index is visible
        Parameters:
        columnIndex - the column index
        Returns:
        true if the column is visible
        Since:
        3.5