Class SashForm

  • All Implemented Interfaces:
    Drawable
    Direct Known Subclasses:
    Splitter

    public class SashForm
    extends Composite
    The SashForm is a composite control that lays out its children in a row or column arrangement (as specified by the orientation) and places a Sash between each child. One child may be maximized to occupy the entire size of the SashForm. The relative sizes of the children may be specified using weights.
    Styles:
    HORIZONTAL, VERTICAL, SMOOTH
    See Also:
    SashForm snippets, SWT Example: CustomControlExample, Sample code and further information
    • Field Detail

      • SASH_WIDTH

        public int SASH_WIDTH
        The width of all sashes in the form.
    • Constructor Detail

      • SashForm

        public SashForm​(Composite parent,
                        int style)
        Constructs a new instance of this class given its parent and a style value describing its behavior and appearance.

        The style value is either one of the style constants defined in class SWT which is applicable to instances of this class, or must be built by bitwise OR'ing together (that is, using the int "|" operator) two or more of those SWT style constants. The class description lists the style constants that are applicable to the class. Style bits are also inherited from superclasses.

        Parameters:
        parent - a widget which will be the parent of the new instance (cannot be null)
        style - the style of widget to construct
        Throws:
        IllegalArgumentException -
        • ERROR_NULL_ARGUMENT - if the parent is null
        SWTException -
        • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent
        See Also:
        SWT.HORIZONTAL, SWT.VERTICAL, getStyle()
    • Method Detail

      • getOrientation

        public int getOrientation()
        Returns SWT.HORIZONTAL if the controls in the SashForm are laid out side by side or SWT.VERTICAL if the controls in the SashForm are laid out top to bottom.

        To retrieve the bidi orientation of the SashForm use getStyle() and test if the SWT.RIGHT_TO_LEFT or SWT.LEFT_TO_RIGHT bits are set.

        Overrides:
        getOrientation in class Control
        Returns:
        SWT.HORIZONTAL or SWT.VERTICAL
      • getSashWidth

        public int getSashWidth()
        Returns the width of the sashes when the controls in the SashForm are laid out.
        Returns:
        the width of the sashes
        Throws:
        SWTException -
        • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
        • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
        Since:
        3.4
      • getStyle

        public int getStyle()
        Description copied from class: Widget
        Returns the receiver's style information.

        Note that the value which is returned by this method may not match the value which was provided to the constructor when the receiver was created. This can occur when the underlying operating system does not support a particular combination of requested styles. For example, if the platform widget used to implement a particular SWT widget always has scroll bars, the result of calling this method would always have the SWT.H_SCROLL and SWT.V_SCROLL bits set.

        Overrides:
        getStyle in class Widget
        Returns:
        the style bits
      • getMaximizedControl

        public Control getMaximizedControl()
        Answer the control that currently is maximized in the SashForm. This value may be null.
        Returns:
        the control that currently is maximized or null
      • getWeights

        public int[] getWeights()
        Answer the relative weight of each child in the SashForm. The weight represents the percent of the total width (if SashForm has Horizontal orientation) or total height (if SashForm has Vertical orientation) each control occupies. The weights are returned in order of the creation of the widgets (weight[0] corresponds to the weight of the first child created).
        Returns:
        the relative weight of each child
        Throws:
        SWTException -
        • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
        • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
      • setOrientation

        public void setOrientation​(int orientation)
        If orientation is SWT.HORIZONTAL, lay the controls in the SashForm out side by side. If orientation is SWT.VERTICAL, lay the controls in the SashForm out top to bottom.

        Since 3.7, this method can also be called with SWT.RIGHT_TO_LEFT or SWT.LEFT_TO_RIGHT to change the bidi orientation of the SashForm.

        Overrides:
        setOrientation in class Control
        Parameters:
        orientation - SWT.HORIZONTAL or SWT.VERTICAL, SWT.RIGHT_TO_LEFT or SWT.LEFT_TO_RIGHT
        Throws:
        SWTException -
        • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
        • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
        • ERROR_INVALID_ARGUMENT - if the value of orientation is not SWT.HORIZONTAL or SWT.VERTICAL, SWT.RIGHT_TO_LEFT or SWT.LEFT_TO_RIGHT
        See Also:
        Control.setOrientation(int)
      • setBackground

        public void setBackground​(Color color)
        Description copied from class: Control
        Sets the receiver's background color to the color specified by the argument, or to the default system color for the control if the argument is null.

        Note: This operation is a hint and may be overridden by the platform.

        Overrides:
        setBackground in class Control
        Parameters:
        color - the new color (or null)
      • setForeground

        public void setForeground​(Color color)
        Description copied from class: Control
        Sets the receiver's foreground color to the color specified by the argument, or to the default system color for the control if the argument is null.

        Note: This operation is a hint and may be overridden by the platform.

        Overrides:
        setForeground in class Control
        Parameters:
        color - the new color (or null)
      • setLayout

        public void setLayout​(Layout layout)
        Sets the layout which is associated with the receiver to be the argument which may be null.

        Note: No Layout can be set on this Control because it already manages the size and position of its children.

        Overrides:
        setLayout in class Composite
        Parameters:
        layout - the receiver's new layout or null
        Throws:
        SWTException -
        • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
        • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
      • setMaximizedControl

        public void setMaximizedControl​(Control control)
        Specify the control that should take up the entire client area of the SashForm. If one control has been maximized, and this method is called with a different control, the previous control will be minimized and the new control will be maximized. If the value of control is null, the SashForm will minimize all controls and return to the default layout where all controls are laid out separated by sashes.
        Parameters:
        control - the control to be maximized or null
        Throws:
        SWTException -
        • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
        • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
      • setSashWidth

        public void setSashWidth​(int width)
        Specify the width of the sashes when the controls in the SashForm are laid out.
        Parameters:
        width - the width of the sashes
        Throws:
        SWTException -
        • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
        • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
        Since:
        3.4
      • setToolTipText

        public void setToolTipText​(String string)
        Description copied from class: Control
        Sets the receiver's tool tip text to the argument, which may be null indicating that the default tool tip for the control will be shown. For a control that has a default tool tip, such as the Tree control on Windows, setting the tool tip text to an empty string replaces the default, causing no tool tip text to be shown.

        The mnemonic indicator (character '&') is not displayed in a tool tip. To display a single '&' in the tool tip, the character '&' can be escaped by doubling it in the string.

        NOTE: This operation is a hint and behavior is platform specific, on Windows for CJK-style mnemonics of the form " (&C)" at the end of the tooltip text are not shown in tooltip.

        Overrides:
        setToolTipText in class Control
        Parameters:
        string - the new tool tip text (or null)
      • setWeights

        public void setWeights​(int[] weights)
        Specify the relative weight of each child in the SashForm. This will determine what percent of the total width (if SashForm has Horizontal orientation) or total height (if SashForm has Vertical orientation) each control will occupy. The weights must be positive values and there must be an entry for each non-sash child of the SashForm.
        Parameters:
        weights - the relative weight of each child
        Throws:
        SWTException -
        • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
        • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
        • ERROR_INVALID_ARGUMENT - if the weights value is null or of incorrect length (must match the number of children)