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Eclipse Rich Ajax Platform
Release 1.2

org.eclipse.swt.custom
Class ViewForm

java.lang.Object
  extended by

org.eclipse.swt.widgets.Widget
      extended by

org.eclipse.swt.widgets.Control
          extended by

org.eclipse.swt.widgets.Scrollable
              extended by

org.eclipse.swt.widgets.Composite
                  extended by
org.eclipse.swt.custom.ViewForm
All Implemented Interfaces:
Adaptable

public class ViewForm
extends Composite

Instances of this class implement a Composite that positions and sizes children and allows programmatic control of layout and border parameters. ViewForm is used in the workbench to lay out a view's label/menu/toolbar local bar.

Note that although this class is a subclass of Composite, it does not make sense to set a layout on it.

Styles:
BORDER, FLAT
Events:
(None)

IMPORTANT: This class is not intended to be subclassed.


Field Summary
 int horizontalSpacing
          horizontalSpacing specifies the number of pixels between the right edge of one cell and the left edge of its neighbouring cell to the right.
 int marginHeight
          marginHeight specifies the number of pixels of vertical margin that will be placed along the top and bottom edges of the form.
 int marginWidth
          marginWidth specifies the number of pixels of horizontal margin that will be placed along the left and right edges of the form.
 int verticalSpacing
          verticalSpacing specifies the number of pixels between the bottom edge of one cell and the top edge of its neighbouring cell underneath.
 
Constructor Summary
ViewForm ( Composite parent, int style)
          Constructs a new instance of this class given its parent and a style value describing its behavior and appearance.
 
Method Summary
protected  void checkSubclass ()
           
  Rectangle computeTrim (int x, int y, int width, int height)
          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.
  Rectangle getClientArea ()
          Returns a rectangle which describes the area of the receiver which is capable of displaying data (that is, not covered by the "trimmings").
  Control getContent ()
          Returns the content area.
  Control getTopCenter ()
          Returns Control that appears in the top center of the pane.
  Control getTopLeft ()
          Returns the Control that appears in the top left corner of the pane.
  Control getTopRight ()
          Returns the control in the top right corner of the pane.
 void setBorderVisible (boolean show)
          Specify whether the border should be displayed or not.
 void setContent ( Control content)
          Sets the content.
 void setLayout ( Layout layout)
          Sets the layout which is associated with the receiver to be the argument which may be null.
 void setTopCenter ( Control topCenter)
          Set the control that appears in the top center of the pane.
 void setTopCenterSeparate (boolean show)
          If true, the topCenter will always appear on a separate line by itself, otherwise the topCenter will appear in the top row if there is room and will be moved to the second row if required.
 void setTopLeft ( Control c)
          Set the control that appears in the top left corner of the pane.
 void setTopRight ( Control c)
          Set the control that appears in the top right corner of the pane.
 
Methods inherited from class org.eclipse.swt.widgets. Composite
changed, computeSize, getAdapter, getBackgroundMode, getChildren, getLayout, getLayoutDeferred, getTabList, isLayoutDeferred, layout, layout, layout, layout, setBackgroundMode, setFocus, setTabList
 
Methods inherited from class org.eclipse.swt.widgets. Control
addControlListener, addFocusListener, addKeyListener, addMouseListener, addTraverseListener, computeSize, forceFocus, getBackground, getBackgroundImage, getBorderWidth, getBounds, getCursor, getEnabled, getFont, getForeground, getLayoutData, getLocation, getMenu, getMonitor, getParent, getShell, getSize, getToolTipText, getVisible, isEnabled, isFocusControl, isVisible, moveAbove, moveBelow, pack, pack, redraw, removeControlListener, removeFocusListener, removeKeyListener, removeMouseListener, removeTraverseListener, setBackground, setBackgroundImage, setBounds, setBounds, setCursor, setEnabled, setFont, setForeground, setLayoutData, setLocation, setLocation, setMenu, setRedraw, setSize, setSize, setToolTipText, setVisible, toControl, toControl, toDisplay, toDisplay
 
Methods inherited from class org.eclipse.swt.widgets. Widget
addDisposeListener, addListener, checkWidget, dispose, getData, getData, getDisplay, getStyle, isDisposed, notifyListeners, removeDisposeListener, removeListener, setData, setData, toString
 
Methods inherited from class java.lang. Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

marginWidth

public int marginWidth
marginWidth specifies the number of pixels of horizontal margin that will be placed along the left and right edges of the form. The default value is 0.


marginHeight

public int marginHeight
marginHeight specifies the number of pixels of vertical margin that will be placed along the top and bottom edges of the form. The default value is 0.


horizontalSpacing

public int horizontalSpacing
horizontalSpacing specifies the number of pixels between the right edge of one cell and the left edge of its neighbouring cell to the right. The default value is 1.


verticalSpacing

public int verticalSpacing
verticalSpacing specifies the number of pixels between the bottom edge of one cell and the top edge of its neighbouring cell underneath. The default value is 1.

Constructor Detail

ViewForm

public ViewForm(
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.BORDER, SWT.FLAT, Widget.getStyle()
Method Detail

checkSubclass

protected void checkSubclass()
Overrides:
checkSubclass in class Widget

computeTrim

public 
Rectangle computeTrim(int x,
                             int y,
                             int width,
                             int height)
Description copied from class: Scrollable
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.

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).

Overrides:
computeTrim in class Scrollable
Parameters:
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
Returns:
the required bounds to produce the given client area
See Also:
Scrollable.getClientArea()

getClientArea

public 
Rectangle getClientArea()
Description copied from class: Scrollable
Returns a rectangle which describes the area of the receiver which is capable of displaying data (that is, not covered by the "trimmings").

Overrides:
getClientArea in class Scrollable
Returns:
the client area
See Also:
Scrollable.computeTrim(int, int, int, int)

getContent

public 
Control getContent()
Returns the content area.

Returns:
the control in the content area of the pane or null

getTopCenter

public 
Control getTopCenter()
Returns Control that appears in the top center of the pane. Typically this is a toolbar.

Returns:
the control in the top center of the pane or null

getTopLeft

public 
Control getTopLeft()
Returns the Control that appears in the top left corner of the pane. Typically this is a label such as CLabel.

Returns:
the control in the top left corner of the pane or null

getTopRight

public 
Control getTopRight()
Returns the control in the top right corner of the pane. Typically this is a Close button or a composite with a Menu and Close button.

Returns:
the control in the top right corner of the pane or null

setContent

public void setContent(
Control content)
Sets the content. Setting the content to null will remove it from the pane - however, the creator of the content must dispose of the content.

Parameters:
content - the control to be displayed in the content area 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
  • ERROR_INVALID_ARGUMENT - if the control is not a child of this ViewForm

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

setTopCenter

public void setTopCenter(
Control topCenter)
Set the control that appears in the top center of the pane. Typically this is a toolbar. The topCenter is optional. Setting the topCenter to null will remove it from the pane - however, the creator of the topCenter must dispose of the topCenter.

Parameters:
topCenter - the control to be displayed in the top center 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
  • ERROR_INVALID_ARGUMENT - if the control is not a child of this ViewForm

setTopLeft

public void setTopLeft(
Control c)
Set the control that appears in the top left corner of the pane. Typically this is a label such as CLabel. The topLeft is optional. Setting the top left control to null will remove it from the pane - however, the creator of the control must dispose of the control.

Parameters:
c - the control to be displayed in the top left corner 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
  • ERROR_INVALID_ARGUMENT - if the control is not a child of this ViewForm

setTopRight

public void setTopRight(
Control c)
Set the control that appears in the top right corner of the pane. Typically this is a Close button or a composite with a Menu and Close button. The topRight is optional. Setting the top right control to null will remove it from the pane - however, the creator of the control must dispose of the control.

Parameters:
c - the control to be displayed in the top right corner 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
  • ERROR_INVALID_ARGUMENT - if the control is not a child of this ViewForm

setBorderVisible

public void setBorderVisible(boolean show)
Specify whether the border should be displayed or not.

Parameters:
show - true if the border should be displayed
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

setTopCenterSeparate

public void setTopCenterSeparate(boolean show)
If true, the topCenter will always appear on a separate line by itself, otherwise the topCenter will appear in the top row if there is room and will be moved to the second row if required.

Parameters:
show - true if the topCenter will always appear on a separate line by itself
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

Eclipse Rich Ajax Platform
Release 1.2

Copyright (c) Innoopract Informationssysteme GmbH and others 2002, 2008. All rights reserved.


 
 
  Published under the terms of the Eclipse Public License Version 1.0 ("EPL") Design by Interspire