java.lang.Object

org.eclipse.swt.widgets.Widget

org.eclipse.swt.widgets.Control

org.eclipse.swt.widgets.Scrollable

org.eclipse.swt.widgets.Composite

org.eclipse.swt.widgets.Canvas

org.eclipse.nebula.cwt.base.BaseCombo

All Implemented Interfaces:: org.eclipse.swt.graphics.Drawable

Direct Known Subclasses:: CDateTime

public abstract class BaseCombo
extends org.eclipse.swt.widgets.Canvas

The AbstractCombo is an abstract class which provides the basic functionality for a button with a DROP_DOWN, or "popup", shell component. When the user selects the button the shell is set visible and the SWT Components which have been placed on the "content" Composite will be shown.

Nested Class Summary

Nested Classes

Modifier and Type Class Description

protected class BaseCombo.DropComboLayout
Special layout implementation to position the combo's drop-down Button within its Text.

Field Summary

Fields
Modifier and Type	Field	Description
`protected VButton`	`button`	The Button widget of a DROP_DOWN style combo.
`protected static int`	`BUTTON_ALWAYS`	A constant indicating that the drop down button is always visible.
`protected static int`	`BUTTON_AUTO`	A constant indicating that the drop down button is visible when the text box has the focus, and is hidden otherwise.
`protected static int`	`BUTTON_NEVER`	A constant indicating that the drop down button is never visible.
`protected static int`	`BUTTON_ONLY`	A style constant indicating that this combo will only have a drop down button, rather than a button and a text box.
`(package private) boolean`	`buttonActive`	boolean to disable button on open state.
`protected static boolean`	`carbon`	true if the platform is carbon, false otherwise
`protected org.eclipse.swt.widgets.Control`	`content`	The widget contents of the popup Shell in a DROP_DOWN combo or the full contents of a SIMPLE combo.
`protected org.eclipse.swt.widgets.Shell`	`contentShell`	The popup Shell widget of a DROP_DOWN style combo.
`protected boolean`	`defaultButtonImage`	True if a default image should be used for the button; false otherwise - as is the case when an image is set using `setButtonImage(Image)`
`protected static boolean`	`gtk`	true if the platform is gtk, false otherwise
`protected boolean`	`leftAlign`	Flag to indicate that this combo's BUTTON should be displayed on the left side of its Text.
`protected VPanel`	`panel`	The VPanel that is the base of this widget.
`protected boolean`	`simple`	Flag to indicate that this is a SIMPLE style combo.
`protected int`	`style`	The style bits requested.
`protected VNative<org.eclipse.swt.widgets.Text>`	`text`	The Text widget of a DROP_DOWN style combo.
`protected static int`	`textMarginHeight`	A constant value used to pad the computed height for this widget, so that the combo's Button will fit without clipping its top and bottom borders.
`protected static boolean`	`win32`	true if the platform is win32, false otherwise

Fields inherited from class org.eclipse.swt.widgets.Control

handle

Constructor Summary

Constructors

Constructor Description

BaseCombo(org.eclipse.swt.widgets.Composite parent, int style)
Main constructor -- must be called by all subclasses in their own constructors.

Method Summary

Modifier and Type	Method	Description
`void`	`addKeyListener(org.eclipse.swt.events.KeyListener listener)`	Adds the listener to the collection of listeners who will be notified when keys are pressed and released on the system keyboard, by sending it one of the messages defined in the `KeyListener` interface.
`void`	`addModifyListener(org.eclipse.swt.events.ModifyListener listener)`	Adds the listener to the collection of listeners who will be notified when the receiver's text is modified, by sending it one of the messages defined in the `ModifyListener` interface. Note that this is NOT the correct way to listen for changes in the underlying model for the combo.
`void`	`addTraverseListener(org.eclipse.swt.events.TraverseListener listener)`	Adds the listener to the collection of listeners who will be notified when traversal events occur, by sending it one of the messages defined in the `TraverseListener` interface.
`protected boolean`	`checkButton()`
`protected boolean`	`checkContent()`
`protected boolean`	`checkContentShell()`
`protected boolean`	`checkText()`
`protected static boolean`	`containsControl(org.eclipse.swt.widgets.Control control, org.eclipse.swt.widgets.Composite composite)`	A recursive method to find out if a composite is an ancestor of a control.
`protected void`	`doSetButtonImage(org.eclipse.swt.graphics.Image image)`
`protected org.eclipse.swt.widgets.Control`	`getContent()`
`protected org.eclipse.swt.widgets.Shell`	`getContentShell()`
`boolean`	`getEditable()`	Returns the editable state.
`boolean`	`getEnabled()`	Fixes bug 181442: [CDateTime] Incorrect getEnabled()
`protected boolean`	`getHoldOpen()`
`org.eclipse.swt.widgets.Menu`	`getMenu()`	returns the menu for this combo
`protected VControl`	`getStretchControl()`
`int`	`getStyle()`
`java.lang.String`	`getText()`	Returns the text of this combo
`protected boolean`	`isDropDown()`
`boolean`	`isOpen()`
`protected boolean`	`isRTL()`
`protected boolean`	`isSimple()`
`protected void`	`postClose(org.eclipse.swt.widgets.Shell popup)`	called just after the content shell is set not-visible and has "closed"
`protected void`	`postOpen(org.eclipse.swt.widgets.Shell popup)`	called after the content shell is set visible and has "opened"
`protected void`	`preClose(org.eclipse.swt.widgets.Shell popup)`	called just before the content shell is set not-visible and "closes"
`protected void`	`preOpen(org.eclipse.swt.widgets.Shell popup)`	called just before the content shell is set visible and "opens"
`void`	`removeKeyListener(org.eclipse.swt.events.KeyListener listener)`	Removes the listener from the collection of listeners who will be notified when keys are pressed and released on the system keyboard.
`void`	`removeModifyListener(org.eclipse.swt.events.ModifyListener listener)`	Removes the listener from the collection of listeners who will be notified when the receiver's text is modified.
`void`	`removeTraverseListener(org.eclipse.swt.events.TraverseListener listener)`	Removes the listener from the collection of listeners who will be notified when traversal events occur.
`void`	`setBackground(org.eclipse.swt.graphics.Color color)`
`protected void`	`setButtonAlignment(int alignment)`	Set the alignment of the button in relation to the text box.
`protected void`	`setButtonImage(org.eclipse.swt.graphics.Image image)`	Set the custom image for the drop down button.
`protected void`	`setButtonText(java.lang.String text)`	Set the text for the drop down button.
`protected void`	`setButtonVisibility(int visibility)`	Set the visibility style of the drop button.
`protected void`	`setButtonVisible(boolean visible)`	Set the visible state of the button
`protected void`	`setContent(org.eclipse.swt.widgets.Control content)`	set the content of the popup shell
`protected abstract boolean`	`setContentFocus()`	Called when the popup shell has been open, this method provides a location for subclasses to set the focus to the content.
`void`	`setEditable(boolean editable)`	Sets the editable state.
`void`	`setEnabled(boolean enabled)`
`boolean`	`setFocus()`
`void`	`setFont(org.eclipse.swt.graphics.Font font)`
`void`	`setForeground(org.eclipse.swt.graphics.Color color)`
`protected void`	`setHoldOpen(boolean holdOpen)`	if holdOpen is true, the popup shell will not close regardless of events and/or calls to popUp(false) until holdOpen is first set false
`void`	`setMenu(org.eclipse.swt.widgets.Menu menu)`	Sets the menu for the Text widget of this DropCombo
`protected void`	`setModifyEventProperties(org.eclipse.swt.widgets.Event e)`	Provides a chance for subclasses to set the properties of the modify event called when the text is modified.
`protected void`	`setOpen(boolean open)`	Convenience method for BaseCombo:setOpen(boolean, Runnable), omitting optional runnable.
`protected void`	`setOpen(boolean open, java.lang.Runnable callback)`	If 'open' is true, then open the popup shell (time/date picker) (set to visible) If 'open' is false, close the popup shell (set to not visible) If `content == null` or `isOpen() == open` this method simply returns. If `contentShell == null` then `contentShell` will be created.
`protected void`	`setPositionControl(VControl positionControl)`	sets the control to which the popup will align itself
`protected void`	`setStretch(boolean stretch)`	If stretch is false, then the width of the popup will be set to its preferred width (via computeSize(SWT.DEFAULT, SWT.DEFAULT))
`void`	`setToolTipText(java.lang.String tooltip)`	Sets the tooltip on the text and button parts of this Composite widget.

Methods inherited from class org.eclipse.swt.widgets.Canvas

drawBackground, getCaret, getIME, scroll, setCaret, setIME

Methods inherited from class org.eclipse.swt.widgets.Composite

changed, checkSubclass, drawBackground, getBackgroundMode, getChildren, getLayout, getLayoutDeferred, getTabList, isLayoutDeferred, layout, layout, layout, layout, layout, setBackgroundMode, setLayout, setLayoutDeferred, setTabList, toString

Methods inherited from class org.eclipse.swt.widgets.Scrollable

computeTrim, getClientArea, getHorizontalBar, getScrollbarsMode, getVerticalBar

Methods inherited from class org.eclipse.swt.widgets.Control

addControlListener, addDragDetectListener, addFocusListener, addGestureListener, addHelpListener, addMenuDetectListener, addMouseListener, addMouseMoveListener, addMouseTrackListener, addMouseWheelListener, addPaintListener, addTouchListener, computeSize, computeSize, dragDetect, dragDetect, forceFocus, getAccessible, getBackground, getBackgroundImage, getBorderWidth, getBounds, getCursor, getDragDetect, getFont, getForeground, getLayoutData, getLocation, 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, removeMenuDetectListener, removeMouseListener, removeMouseMoveListener, removeMouseTrackListener, removeMouseWheelListener, removePaintListener, removeTouchListener, requestLayout, setBackgroundImage, setBounds, setBounds, setCapture, setCursor, setDragDetect, setLayoutData, setLocation, setLocation, setOrientation, setParent, setRedraw, setRegion, setSize, setSize, setTextDirection, setTouchEnabled, setVisible, toControl, toControl, toDisplay, toDisplay, traverse, traverse, traverse, update

Methods inherited from class org.eclipse.swt.widgets.Widget

addDisposeListener, addListener, checkWidget, dispose, getData, getData, getDisplay, getListeners, isAutoDirection, isDisposed, isListening, notifyListeners, removeDisposeListener, removeListener, removeListener, reskin, setData, setData

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.eclipse.swt.graphics.Drawable

isAutoScalable

Field Details
- carbon
  
  protected static final boolean carbon
  
  true if the platform is carbon, false otherwise
- gtk
  
  protected static final boolean gtk
  
  true if the platform is gtk, false otherwise
- win32
  
  protected static final boolean win32
  
  true if the platform is win32, false otherwise
- textMarginHeight
  
  protected static final int textMarginHeight
  
  A constant value used to pad the computed height for this widget, so that the combo's Button will fit without clipping its top and bottom borders.
- BUTTON_ONLY
  
  protected static final int BUTTON_ONLY
  
  A style constant indicating that this combo will only have a drop down button, rather than a button and a text box.
  
  See Also:
  
  Constant Field Values
- BUTTON_ALWAYS
  
  protected static final int BUTTON_ALWAYS
  
  A constant indicating that the drop down button is always visible. Valid only when style is DROP_DOWN.
  
  See Also:
  
  BUTTON_AUTO, BUTTON_NEVER, Constant Field Values
- BUTTON_NEVER
  
  protected static final int BUTTON_NEVER
  
  A constant indicating that the drop down button is never visible. Valid only when style is DROP_DOWN.
  This setting may be useful if the subclass of this BaseCombo allows programmatic opening and closing of the drop down shell via setOpen(boolean), or a similar method.
  
  See Also:
  
  BUTTON_AUTO, BUTTON_ALWAYS, setOpen(boolean), setOpen(boolean, Runnable), Constant Field Values
- BUTTON_AUTO
  
  protected static final int BUTTON_AUTO
  
  A constant indicating that the drop down button is visible when the text box has the focus, and is hidden otherwise. Valid only when style is DROP_DOWN.
  
  See Also:
  
  BUTTON_ALWAYS, BUTTON_NEVER, Constant Field Values
- buttonActive
  
  boolean buttonActive
  
  boolean to disable button on open state.
- panel
  
  protected VPanel panel
  
  The VPanel that is the base of this widget. If the style is SIMPLE, this panel will be the base of the content area, otherwise, it is the base of the text/button area.
- button
  
  protected VButton button
  
  The Button widget of a DROP_DOWN style combo. This value may be null -- protect all references to this field with the checkButton() method.
- defaultButtonImage
  
  protected boolean defaultButtonImage
  
  True if a default image should be used for the button; false otherwise - as is the case when an image is set using setButtonImage(Image)
  
  See Also:
  
  setButtonImage(Image)
- text
  
  protected VNative<org.eclipse.swt.widgets.Text> text
  
  The Text widget of a DROP_DOWN style combo. This value may be null -- protect all references to this field with the checkText() method.
- contentShell
  
  protected org.eclipse.swt.widgets.Shell contentShell
  
  The popup Shell widget of a DROP_DOWN style combo. This value may be null -- protect all references to this field with the checkContentShell() method.
- content
  
  protected org.eclipse.swt.widgets.Control content
  
  The widget contents of the popup Shell in a DROP_DOWN combo or the full contents of a SIMPLE combo. This value may be null -- protect all references to this field with the checkContent() method.
- style
  
  protected int style
  
  The style bits requested. NOTE: this may not match the value returned by getStyle() if invalid bits were requested.
- simple
  
  protected boolean simple
  
  Flag to indicate that this is a SIMPLE style combo.
- leftAlign
  
  protected boolean leftAlign
  
  Flag to indicate that this combo's BUTTON should be displayed on the left side of its Text.
Constructor Details
- BaseCombo
  
  public BaseCombo(org.eclipse.swt.widgets.Composite parent, int style)
  
  Main constructor -- must be called by all subclasses in their own constructors.
  SWT.TOGGLE, SWT.PUSH, SWT.ARROW, SWT.FLAT, SWT.TRAIL, SWT.LEAD, SWT.BORDER, SWT.SIMPLE, SWT.DROP_DOWN
  
  Parameters:
  
  parent - the visual parent of this widget
  
  style - the requested SWT style bitmask for this widget
Method Details
- containsControl
  
  protected static boolean containsControl(org.eclipse.swt.widgets.Control control, org.eclipse.swt.widgets.Composite composite)
  
  A recursive method to find out if a composite is an ancestor of a control.
  
  Parameters:
  
  control -
  
  composite -
  
  Returns:
  
  true if the composite is an ancestor, false otherwise.
- addKeyListener
  
  public void addKeyListener(org.eclipse.swt.events.KeyListener listener)
  
  Adds the listener to the collection of listeners who will be notified when keys are pressed and released on the system keyboard, by sending it one of the messages defined in the KeyListener interface.
  When a key listener is added to a control, the control will take part in widget traversal. By default, all traversal keys (such as the tab key and so on) are delivered to the control. In order for a control to take part in traversal, it should listen for traversal events. Otherwise, the user can traverse into a control but not out. Note that native controls such as table and tree implement key traversal in the operating system. It is not necessary to add traversal listeners for these controls, unless you want to override the default traversal.
  Overrides:
  
  addKeyListener in class org.eclipse.swt.widgets.Control
  
  Parameters:
  
  listener - the listener which should be notified
  
  Throws:
  
  java.lang.IllegalArgumentException -
  
  ERROR_NULL_ARGUMENT - if the listener is null
  
  org.eclipse.swt.SWTException -
  
  ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  
  ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
  
  See Also:
  
  KeyListener, removeKeyListener(org.eclipse.swt.events.KeyListener)
- addModifyListener
  
  public void addModifyListener(org.eclipse.swt.events.ModifyListener listener)
  
  Adds the listener to the collection of listeners who will be notified when the receiver's text is modified, by sending it one of the messages defined in the ModifyListener interface.
  Note that this is NOT the correct way to listen for changes in the underlying model for the combo. This should be provided by some other mechanism, such as a SelectionListener.
  Parameters:
  
  listener - the listener which should be notified
  
  Throws:
  
  java.lang.IllegalArgumentException -
  
  ERROR_NULL_ARGUMENT - if the listener is null
  
  org.eclipse.swt.SWTException -
  
  ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  
  ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
  
  See Also:
  
  ModifyListener, removeModifyListener(org.eclipse.swt.events.ModifyListener)
- addTraverseListener
  
  public void addTraverseListener(org.eclipse.swt.events.TraverseListener listener)
  
  Adds the listener to the collection of listeners who will be notified when traversal events occur, by sending it one of the messages defined in the TraverseListener interface.
  Overrides:
  
  addTraverseListener in class org.eclipse.swt.widgets.Control
  
  Parameters:
  
  listener - the listener which should be notified
  
  Throws:
  
  java.lang.IllegalArgumentException -
  
  ERROR_NULL_ARGUMENT - if the listener is null
  
  org.eclipse.swt.SWTException -
  
  ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  
  ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
  
  See Also:
  
  TraverseListener, removeTraverseListener(org.eclipse.swt.events.TraverseListener)
- checkButton
  
  protected boolean checkButton()
  
  Returns:
  
  true if the button field is in a fit state to be used
- checkContent
  
  protected boolean checkContent()
  
  Returns:
  
  true if the content field is in a fit state to be used
- checkContentShell
  
  protected boolean checkContentShell()
  
  Returns:
  
  true if the contentShell field is in a fit state to be used
- checkText
  
  protected boolean checkText()
  
  Returns:
  
  true if the text field is in a fit state to be used
- doSetButtonImage
  
  protected final void doSetButtonImage(org.eclipse.swt.graphics.Image image)
  
  Parameters:
  
  image -
- getContent
  
  protected org.eclipse.swt.widgets.Control getContent()
  
  Returns:
  
  the Control that was set as this popup shell's content with setContent(Control)
- getContentShell
  
  protected org.eclipse.swt.widgets.Shell getContentShell()
  
  Returns:
  
  the content shell
- getEditable
  
  public boolean getEditable()
  
  Returns the editable state.
  Returns:
  
  whether or not the receiver is editable
  
  Throws:
  
  org.eclipse.swt.SWTException -
  
  ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  
  ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
- getEnabled
  
  public boolean getEnabled()
  
  Fixes bug 181442: [CDateTime] Incorrect getEnabled()
  
  Overrides:
  
  getEnabled in class org.eclipse.swt.widgets.Control
- getHoldOpen
  
  protected boolean getHoldOpen()
  
  Returns:
  
  the state of the holdOpen flag
- getMenu
  
  public org.eclipse.swt.widgets.Menu getMenu()
  
  returns the menu for this combo
  
  Overrides:
  
  getMenu in class org.eclipse.swt.widgets.Control
- getStretchControl
  
  protected VControl getStretchControl()
  
  Returns:
  
  the stretch control
- getStyle
  
  public int getStyle()
  
  Overrides:
  
  getStyle in class org.eclipse.swt.widgets.Widget
- getText
  
  public java.lang.String getText()
  
  Returns the text of this combo
  
  Returns:
  
  the combo's text
- isDropDown
  
  protected boolean isDropDown()
  
  Returns:
  
  true if style is CDT.DROP_DOWN
- isOpen
  
  public boolean isOpen()
  
  Returns:
  
  the state of the popup shell's visibility
- isRTL
  
  protected boolean isRTL()
  
  Returns:
  
  if Shell style is SWT.RIGHT_TO_LEFT
- isSimple
  
  protected boolean isSimple()
  
  Returns:
  
  if style is CDT.SIMPLE
- postClose
  
  protected void postClose(org.eclipse.swt.widgets.Shell popup)
  
  called just after the content shell is set not-visible and has "closed"
  override if you want to do something with the shell just after becoming not visible
  
  Parameters:
  
  popup -
  
  See Also:
  
  preClose(Shell)
- postOpen
  
  protected void postOpen(org.eclipse.swt.widgets.Shell popup)
  
  called after the content shell is set visible and has "opened"
  override if you want to do something with the shell just after becoming visible
  
  Parameters:
  
  popup -
  
  See Also:
  
  preOpen(Shell)
- preClose
  
  protected void preClose(org.eclipse.swt.widgets.Shell popup)
  
  called just before the content shell is set not-visible and "closes"
  override if you want to do something with the shell prior to it becoming not visible
  
  Parameters:
  
  popup -
  
  See Also:
  
  postClose(Shell)
- preOpen
  
  protected void preOpen(org.eclipse.swt.widgets.Shell popup)
  
  called just before the content shell is set visible and "opens"
  override if you want to do something with the shell prior to it becoming visible
  
  Parameters:
  
  popup -
  
  See Also:
  
  postOpen(Shell)
- removeKeyListener
  
  public void removeKeyListener(org.eclipse.swt.events.KeyListener listener)
  
  Removes the listener from the collection of listeners who will be notified when keys are pressed and released on the system keyboard.
  Overrides:
  
  removeKeyListener in class org.eclipse.swt.widgets.Control
  
  Parameters:
  
  listener - the listener which should no longer be notified
  
  Throws:
  
  java.lang.IllegalArgumentException -
  
  ERROR_NULL_ARGUMENT - if the listener is null
  
  org.eclipse.swt.SWTException -
  
  ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  
  ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
  
  See Also:
  
  KeyListener, addKeyListener(org.eclipse.swt.events.KeyListener)
- removeModifyListener
  
  public void removeModifyListener(org.eclipse.swt.events.ModifyListener listener)
  
  Removes the listener from the collection of listeners who will be notified when the receiver's text is modified.
  Parameters:
  
  listener - the listener which should no longer be notified
  
  Throws:
  
  java.lang.IllegalArgumentException -
  
  ERROR_NULL_ARGUMENT - if the listener is null
  
  org.eclipse.swt.SWTException -
  
  ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  
  ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
  
  See Also:
  
  ModifyListener, addModifyListener(org.eclipse.swt.events.ModifyListener)
- removeTraverseListener
  
  public void removeTraverseListener(org.eclipse.swt.events.TraverseListener listener)
  
  Removes the listener from the collection of listeners who will be notified when traversal events occur.
  Overrides:
  
  removeTraverseListener in class org.eclipse.swt.widgets.Control
  
  Parameters:
  
  listener - the listener which should no longer be notified
  
  Throws:
  
  java.lang.IllegalArgumentException -
  
  ERROR_NULL_ARGUMENT - if the listener is null
  
  org.eclipse.swt.SWTException -
  
  ERROR_WIDGET_DISPOSED - if the receiver has been disposed
  
  ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
  
  See Also:
  
  TraverseListener, addTraverseListener(org.eclipse.swt.events.TraverseListener)
- setButtonAlignment
  
  protected void setButtonAlignment(int alignment)
  
  Set the alignment of the button in relation to the text box. Only valid if style is DROP_DOWN.
  
  Parameters:
  
  alignment - can be either SWT.LEFT or SWT.RIGHT. Other values have no effect.
- setButtonImage
  
  protected void setButtonImage(org.eclipse.swt.graphics.Image image)
  
  Set the custom image for the drop down button. Only valid if style is DROP_DOWN. Passing null in will set the image to its default value.
  
  Parameters:
  
  image -
- setButtonText
  
  protected void setButtonText(java.lang.String text)
  
  Set the text for the drop down button. Only valid if style is DROP_DOWN. Passing null will clear the text.
  
  Parameters:
  
  text -
- setButtonVisibility
  
  protected void setButtonVisibility(int visibility)
  
  Set the visibility style of the drop button.
  The style will be forced to NEVER if the contents are null
  
  Styles:
  
  BUTTON_ALWAYS, BUTTON_AUTO, BUTTON_MANUAL, BUTTON_NEVER
  
  Style BUTTON_ALWAYS:
  
  Button will always be shown - standard SWT.DROP_DOWN behaviour. The method setButtonVisible(boolean) has no affect with this style set
  
  Style BUTTON_AUTO:
  
  Button visibility will be handled automatically through focus events, popup events, as well as programmatically
  
  Style BUTTON_MANUAL:
  
  Button visibility will only be handled programmatically
  
  Style BUTTON_NEVER:
  
  Button will never be shown - standard SWT.SIMPLE behaviour. The method setButtonVisible(boolean) has no affect with this style set
  
  Parameters:
  
  visibility - the visibility style constant
  
  See Also:
  
  setButtonVisible(boolean)
- setButtonVisible
  
  protected void setButtonVisible(boolean visible)
  
  Set the visible state of the button
  Note: This method is only useful when the button's visibility style is either AUTO or MANUAL.
  
  Parameters:
  
  visible -
  
  See Also:
  
  setButtonVisibility(int)
- setContent
  
  protected void setContent(org.eclipse.swt.widgets.Control content)
  
  set the content of the popup shell
  Can be a single control, or a Composite consisting of many controls
  
  Parameters:
  
  content -
- setContentFocus
  
  protected abstract boolean setContentFocus()
  
  Called when the popup shell has been open, this method provides a location for subclasses to set the focus to the content.
  
  Returns:
  
  true if the focus was set, false otherwise
- setEditable
  
  public void setEditable(boolean editable)
  
  Sets the editable state.
  
  Parameters:
  
  editable - the new editable state
- setEnabled
  
  public void setEnabled(boolean enabled)
  
  Overrides:
  
  setEnabled in class org.eclipse.swt.widgets.Control
- setFocus
  
  public boolean setFocus()
  
  Overrides:
  
  setFocus in class org.eclipse.swt.widgets.Composite
- setFont
  
  public void setFont(org.eclipse.swt.graphics.Font font)
  
  Overrides:
  
  setFont in class org.eclipse.swt.widgets.Canvas
  
  See Also:
  
  Canvas.setFont(org.eclipse.swt.graphics.Font)
- setBackground
  
  public void setBackground(org.eclipse.swt.graphics.Color color)
  
  Overrides:
  
  setBackground in class org.eclipse.swt.widgets.Control
  
  See Also:
  
  Control.setBackground(org.eclipse.swt.graphics.Color)
- setForeground
  
  public void setForeground(org.eclipse.swt.graphics.Color color)
  
  Overrides:
  
  setForeground in class org.eclipse.swt.widgets.Control
  
  See Also:
  
  Control.setForeground(org.eclipse.swt.graphics.Color)
- setHoldOpen
  
  protected void setHoldOpen(boolean holdOpen)
  
  if holdOpen is true, the popup shell will not close regardless of events and/or calls to popUp(false) until holdOpen is first set false
  merely sets the holdOpen flag, does not change popup visibility state
  
  Parameters:
  
  holdOpen -
- setMenu
  
  public void setMenu(org.eclipse.swt.widgets.Menu menu)
  
  Sets the menu for the Text widget of this DropCombo
  Note that setting the menu to null causes the native menu to be used
  
  If the intent is to disable the menu, then set it to a blank menu
  
  Overrides:
  
  setMenu in class org.eclipse.swt.widgets.Control
- setModifyEventProperties
  
  protected void setModifyEventProperties(org.eclipse.swt.widgets.Event e)
  
  Provides a chance for subclasses to set the properties of the modify event called when the text is modified. Not valid if style is SIMPLE.
  For example, CDateTime overrides this method to set the data field to the current time:
  e.data = calendar.getTime();
  Parameters: e -

Class BaseCombo

Nested Class Summary