net.sf.ecl.datepicker
Class AbstractCombo

java.lang.Object
  org.eclipse.swt.widgets.Widget
      org.eclipse.swt.widgets.Control
          org.eclipse.swt.widgets.Scrollable
              org.eclipse.swt.widgets.Composite
                  net.sf.ecl.datepicker.AbstractCombo

All Implemented Interfaces:

Drawable

Direct Known Subclasses:

DatePicker

public abstract class AbstractCombo
extends Composite

is an abstract implementation of a custom SWT combo. The class groups together an editor and drop-down control and manages their common lifecycle. The control was maid as native as possible. Unfortunately, it is not possible to make it look like native OS X drop-down combos yet.

Styles:

NONE

Events:

SelectionListener

Author:

Alexey Afanasyev, Alexey Kharlamov

Field Summary

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

handle

Constructor Summary

protected

AbstractCombo(Composite parent, int style) creates an instance of the combo with the given parent widget and style.

Method Summary

void	addSelectionListener(SelectionListener listener) adds a selection listener to the control.
Point	computeSize(int wHint, int hHint, boolean changed)
protected abstract Control	createInput(Composite parent, int style) creates an input widget.
protected abstract Control	createPopup(Composite parent, int style) creates a control placed into combo's drop-down.
void	dispose()
protected abstract void	handlePopupHiding() notification of popup hiding.
protected abstract void	handlePopupShowing() notification of popup appearance.
protected void	hidePopup() hides the combo's popup.
void	layout(boolean changed)
void	removeSelectionListener(SelectionListener listener) removes selection listener to the control.
void	setBackground(Color color)
void	setEnabled(boolean enabled)
void	setFont(Font font)
void	setForeground(Color color)
void	setToolTipText(String toolTip)
protected void	showPopup() shows the combo's drop-down popup.

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

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

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

computeTrim, getClientArea, getHorizontalBar, getVerticalBar

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

addControlListener, addFocusListener, addHelpListener, addKeyListener, addMouseListener, addMouseMoveListener, addMouseTrackListener, addPaintListener, addTraverseListener, computeSize, forceFocus, getAccessible, getBackground, getBackgroundImage, getBorderWidth, getBounds, getEnabled, getFont, getForeground, getLayoutData, getLocation, getMenu, getMonitor, getParent, getShell, getSize, getToolTipText, getVisible, internal_dispose_GC, internal_new_GC, isEnabled, isFocusControl, isReparentable, isVisible, moveAbove, moveBelow, pack, pack, redraw, redraw, removeControlListener, removeFocusListener, removeHelpListener, removeKeyListener, removeMouseListener, removeMouseMoveListener, removeMouseTrackListener, removePaintListener, removeTraverseListener, setBackgroundImage, setBounds, setBounds, setCapture, setCursor, setLayoutData, setLocation, setLocation, setMenu, setParent, setRedraw, setSize, setSize, setVisible, toControl, toControl, toDisplay, toDisplay, traverse, update

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

addDisposeListener, addListener, checkWidget, getData, getData, getDisplay, getStyle, isDisposed, isListening, notifyListeners, removeDisposeListener, removeListener, removeListener, setData, setData, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractCombo

protected AbstractCombo(Composite parent,
                        int style)

creates an instance of the combo with the given parent widget and style.

Parameters:

parent - the parent widget.

style - the style.

Method Detail

addSelectionListener

public final void addSelectionListener(SelectionListener listener)

adds a selection listener to the control.

Parameters:

listener - the listener.

computeSize

public final Point computeSize(int wHint,
                               int hHint,
                               boolean changed)

Overrides:

computeSize in class Composite

dispose

public final void dispose()

Overrides:

dispose in class Widget

layout

public final void layout(boolean changed)

Overrides:

layout in class Composite

removeSelectionListener

public final void removeSelectionListener(SelectionListener listener)

removes selection listener to the control.

Parameters:

listener - the listener.

setBackground

public final void setBackground(Color color)

Overrides:

setBackground in class Control

setEnabled

public void setEnabled(boolean enabled)

Overrides:

setEnabled in class Control

setFont

public final void setFont(Font font)

Overrides:

setFont in class Control

setForeground

public final void setForeground(Color color)

Overrides:

setForeground in class Control

setToolTipText

public final void setToolTipText(String toolTip)

Overrides:

setToolTipText in class Control

createInput

protected abstract Control createInput(Composite parent,
                                       int style)

creates an input widget. The widget is used by the composite to edit textual representation of the date.

Parameters:

parent - the input widget's parent.

style - the style for input widget. The style is derived from the composite's style.

Returns:

the input widget.

createPopup

protected abstract Control createPopup(Composite parent,
                                       int style)

creates a control placed into combo's drop-down. The method is called each time the drop-down is shown.

Parameters:

parent - the parent control.

style - the style derived from the style of the combo.

Returns:

the control.

handlePopupHiding

protected abstract void handlePopupHiding()

notification of popup hiding. It is called _before_ the actual hiding.

handlePopupShowing

protected abstract void handlePopupShowing()

notification of popup appearance. The method is called after popup construction but before it becomes visible.

hidePopup

protected final void hidePopup()

hides the combo's popup.

showPopup

protected final void showPopup()

shows the combo's drop-down popup.