public class ToolBar extends Composite
The item children that may be added to instances of this class
must be of type
Note that although this class is a subclass of
it does not make sense to add
Control children to it,
or set a layout on it.
Note: Only one of the styles HORIZONTAL and VERTICAL may be specified.
IMPORTANT: This class is not intended to be subclassed.
|Constructor and Description|
Constructs a new instance of this class given its parent and a style value describing its behavior and appearance.
|Modifier and Type||Method and Description|
Checks that this class can be subclassed.
Returns the preferred size of the receiver.
Given a desired client area for the receiver (as described by the arguments), returns the bounding rectangle which would be required to produce that client area.
Returns the item at the given, zero-relative index in the receiver.
Returns the item at the given point in the receiver or null if no such item exists.
Returns the number of items contained in the receiver.
Returns an array of
Returns the number of rows in the receiver.
Searches the receiver's list starting at the first item (index 0) until an item is found that is equal to the argument, and returns the index of that item.
Sets the font that the receiver will use to paint textual information to the font specified by the argument, or to the default font for that kind of control if the argument is null.
Changes the parent of the widget to be the one provided if the underlying operating system supports this feature.
If the argument is
changed, drawBackground, getBackgroundMode, getChildren, getLayout, getLayoutDeferred, getTabList, isLayoutDeferred, layout, layout, layout, layout, layout, setBackgroundMode, setFocus, setLayout, setLayoutDeferred, setTabList
getClientArea, getHorizontalBar, getScrollbarsMode, getVerticalBar
addControlListener, addDragDetectListener, addFocusListener, addGestureListener, addHelpListener, addKeyListener, addMenuDetectListener, addMouseListener, addMouseMoveListener, addMouseTrackListener, addMouseWheelListener, addPaintListener, addTouchListener, addTraverseListener, computeSize, dragDetect, dragDetect, forceFocus, getAccessible, getBackground, getBackgroundImage, getBorderWidth, getBounds, getCursor, getDragDetect, getEnabled, getFont, getForeground, getLayoutData, getLocation, getMenu, getMonitor, getOrientation, getParent, getRegion, getShell, getSize, getTextDirection, getToolTipText, getTouchEnabled, getVisible, internal_dispose_GC, internal_new_GC, isEnabled, isFocusControl, isReparentable, isVisible, moveAbove, moveBelow, pack, pack, print, redraw, redraw, removeControlListener, removeDragDetectListener, removeFocusListener, removeGestureListener, removeHelpListener, removeKeyListener, removeMenuDetectListener, removeMouseListener, removeMouseMoveListener, removeMouseTrackListener, removeMouseWheelListener, removePaintListener, removeTouchListener, removeTraverseListener, setBackground, setBackgroundImage, setBounds, setBounds, setCapture, setCursor, setDragDetect, setEnabled, setForeground, setLayoutData, setLocation, setLocation, setMenu, setOrientation, setRegion, setSize, setSize, setTextDirection, setToolTipText, setTouchEnabled, setVisible, toControl, toControl, toDisplay, toDisplay, traverse, traverse, traverse, update
addDisposeListener, addListener, checkWidget, dispose, getData, getData, getDisplay, getListeners, getStyle, isDisposed, isListening, notifyListeners, removeDisposeListener, removeListener, removeListener, reskin, setData, setData, toString
public ToolBar(Composite parent, int style)
The style value is either one of the style constants defined in
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
SWT style constants. The class description
lists the style constants that are applicable to the class.
Style bits are also inherited from superclasses.
parent- a composite control which will be the parent of the new instance (cannot be null)
style- the style of control to construct
protected void checkSubclass()
The SWT class library is intended to be subclassed
only at specific, controlled points (most notably,
implementing new widgets). This method enforces this
rule unless it is overridden.
IMPORTANT: By providing an implementation of this method that allows a subclass of a class which does not normally allow subclassing to be created, the implementer agrees to be fully responsible for the fact that any such subclass will likely fail between SWT releases and will be strongly platform specific. No support is provided for user-written classes which are implemented in this fashion.
The ability to subclass outside of the allowed SWT classes is intended purely to enable those not on the SWT development team to implement patches in order to get around specific limitations in advance of when those limitations can be addressed by the team. Subclassing should not be attempted without an intimate and detailed understanding of the hierarchy.
public Point computeSize(int wHint, int hHint, boolean changed)
The preferred size of a control is the size that it would
best be displayed at. The width hint and height hint arguments
allow the caller to ask a control questions such as "Given a particular
width, how high does the control need to be to show all of the contents?"
To indicate that the caller does not wish to constrain a particular
dimension, the constant
SWT.DEFAULT is passed for the hint.
If the changed flag is
true, it indicates that the receiver's
contents have changed, therefore any caches that a layout manager
containing the control may have been keeping need to be flushed. When the
control is resized, the changed flag will be
false, so layout
manager caches can be retained.
wHint- the width hint (can be
hHint- the height hint (can be
trueif the control's contents have changed, and
Control.pack(boolean), "computeTrim, getClientArea for controls that implement them"
public Rectangle computeTrim(int x, int y, int width, int height)
In other words, it returns a rectangle such that, if the receiver's bounds were set to that rectangle, the area of the receiver which is capable of displaying data (that is, not covered by the "trimmings") would be the rectangle described by the arguments (relative to the receiver's parent).
x- the desired x coordinate of the client area
y- the desired y coordinate of the client area
width- the desired width of the client area
height- the desired height of the client area
public ToolItem getItem(int index)
index- the index of the item to return
point- the point used to locate the item
public int getItemCount()
public ToolItem getItems()
ToolItems which are the items in the receiver.
Note: This is not the actual structure used by the receiver to maintain its list of items, so modifying the array will not affect the receiver.
public int getRowCount()
WRAPstyle, the number of rows can be greater than one. Otherwise, the number of rows is always one.
public int indexOf(ToolItem item)
item- the search item
public void setFont(Font font)
public boolean setParent(Composite parent)
trueif the parent is successfully changed.
public void setRedraw(boolean redraw)
false, causes subsequent drawing operations in the receiver to be ignored. No drawing of any kind can occur in the receiver until the flag is set to true. Graphics operations that occurred while the flag was
falseare lost. When the flag is set to
true, the entire widget is marked as needing to be redrawn. Nested calls to this method are stacked.
Note: This operation is a hint and may not be supported on some platforms or for some widgets.
Copyright (c) 2000, 2015 Eclipse Contributors and others. All rights reserved.Guidelines for using Eclipse APIs.