Class Section

  • All Implemented Interfaces:
    Drawable

    public class Section
    extends ExpandableComposite
    A variation of the expandable composite that adds optional description below the title. Section is often used as a basic building block in forms because it provides for logical grouping of information.

    In case of the TITLE_BAR style, Section renders the title bar in a way compatible with the rest of the workbench. Since it is a widget, all the colors must be supplied directly. When created by the form toolkit, these colors are supplied by the toolkit. The toolkit initializes these colors based on the system colors. For this reason, it is recommended to create the section by the toolkit instead of through its own constructor.

    Since 3.1, it is possible to set a control to be used for section description. If used, DESCRIPTION style should not be set. A typical way to take advantage of the new method is to set an instance of FormText to provide for hyperlinks and images in the description area.

    Since:
    3.0
    • Field Detail

      • DESCRIPTION

        public static final int DESCRIPTION
        Description style. If used, description will be rendered below the title.
        See Also:
        Constant Field Values
    • Constructor Detail

      • Section

        public Section​(Composite parent,
                       int style)
        Creates a new section instance in the provided parent.
        Parameters:
        parent - the parent composite
        style - the style to use
    • Method Detail

      • internalSetExpanded

        protected void internalSetExpanded​(boolean expanded)
        Description copied from class: ExpandableComposite
        Performs the expansion state change for the expandable control.
        Overrides:
        internalSetExpanded in class ExpandableComposite
        Parameters:
        expanded - the expansion state
      • reflow

        protected void reflow()
        Reflows this section and all the parents up the hierarchy until a SharedScrolledComposite is reached.
      • setDescription

        public void setDescription​(String description)
        Sets the description text. Has no effect if DESCRIPTION style was not used to create the control.
        Parameters:
        description -
      • getDescription

        public String getDescription()
        Returns the current description text.
        Returns:
        description text or null if DESCRIPTION style was not used to create the control.
      • setSeparatorControl

        public void setSeparatorControl​(Control separator)
        Sets the separator control of this section. The separator must not be null and must be a direct child of this container. If defined, separator will be placed below the title text and will remain visible regardless of the expansion state.
        Parameters:
        separator - the separator that will be placed below the title text.
      • getSeparatorControl

        public Control getSeparatorControl()
        Returns the control that is used as a separator between the title and the client, or null if not set.
        Overrides:
        getSeparatorControl in class ExpandableComposite
        Returns:
        separator control or null if not set.
      • setBackground

        public void setBackground​(Color bg)
        Sets the background of the section.
        Overrides:
        setBackground in class ExpandableComposite
        Parameters:
        bg - the new background
      • setForeground

        public void setForeground​(Color fg)
        Sets the foreground of the section.
        Overrides:
        setForeground in class ExpandableComposite
        Parameters:
        fg - the new foreground.
      • setDescriptionControl

        public void setDescriptionControl​(Control descriptionControl)
        Sets the description control of this section. The control must not be null and must be a direct child of this container. If defined, control will be placed below the title text and the separator and will be hidden in the collapsed state.

        This method and DESCRIPTION style are mutually exclusive. Use the method only if you want to create the description control yourself.

        Parameters:
        descriptionControl - the control that will be placed below the title text.
        Since:
        3.1
      • setTitleBarBorderColor

        public void setTitleBarBorderColor​(Color color)
        Sets the color of the title bar border when TITLE_BAR style is used.
        Parameters:
        color - the title bar border color
      • setTitleBarBackground

        public void setTitleBarBackground​(Color color)
        Sets the color of the title bar background when TITLE_BAR style is used. This color is used as a starting color for the vertical gradient.
        Parameters:
        color - the title bar border background
      • setTitleBarGradientBackground

        public void setTitleBarGradientBackground​(Color color)
        Sets the color of the title bar gradient background when TITLE_BAR style is used. This color is used at the height where title controls end (toggle, tool bar).
        Parameters:
        color - the title bar gradient background
      • getTitleBarBorderColor

        public Color getTitleBarBorderColor()
        Returns the title bar border color when TITLE_BAR style is used.
        Returns:
        the title bar border color
      • getTitleBarGradientBackground

        public Color getTitleBarGradientBackground()
        Returns the title bar gradient background color when TITLE_BAR style is used.
        Returns:
        the title bar gradient background
      • getTitleBarBackground

        public Color getTitleBarBackground()
        Returns the title bar background when TITLE_BAR style is used.
        Returns:
        the title bar background
      • onPaint

        protected void onPaint​(PaintEvent e)
        Description copied from class: ExpandableComposite
        If TITLE_BAR or SHORT_TITLE_BAR style is used, title bar decoration will be painted behind the text in this method. The default implementation does nothing - subclasses are responsible for rendering the title area.
        Overrides:
        onPaint in class ExpandableComposite
        Parameters:
        e - the paint event
      • setBackgroundImage

        public final void setBackgroundImage​(Image image)
        Background image is used for the title gradient - does nothing.
        Overrides:
        setBackgroundImage in class Control
        Parameters:
        image - the new image (or null)