Class IzMenuItem
- java.lang.Object
- com.iizix.swt.IzMenuItem
 
- public class IzMenuItem extends java.lang.ObjectThe Menu drop-in replacement in iiziGo that does not consume handles, i.e. creates the SWT menu only when required.- Author:
- Christopher Mindus
 
- Constructor Summary- Constructors - Constructor - Description - IzMenuItem(IzMenu menu, int style)Constructor.- IzMenuItem(IzMenu menu, int style, java.lang.String text)Constructor for menu item.- IzMenuItem(IzMenu menu, int style, java.lang.String text, org.eclipse.swt.graphics.Image image)Constructor for menu item.- IzMenuItem(IzMenu menu, int style, java.lang.String text, org.eclipse.swt.graphics.Image image, org.eclipse.swt.widgets.Listener selectionListener)Constructor for menu item.- IzMenuItem(IzMenu menu, int style, java.lang.String text, org.eclipse.swt.widgets.Listener selectionListener)Constructor for menu item.- IzMenuItem(IzMenu menu, IzSubMenu subMenu)Creates a submenu.- IzMenuItem(IzMenu menu, java.lang.String text)Constructor for push button menu item.- IzMenuItem(IzMenu menu, java.lang.String text, org.eclipse.swt.graphics.Image image)Constructor for push button menu item.- IzMenuItem(IzMenu menu, java.lang.String text, org.eclipse.swt.graphics.Image image, org.eclipse.swt.widgets.Listener selectionListener)Constructor for push button menu item.- IzMenuItem(IzMenu menu, java.lang.String text, org.eclipse.swt.widgets.Listener selectionListener)Constructor for push button menu item.- IzMenuItem(IzMenu menu, org.eclipse.jface.action.IAction action)Creates a menu item from a action.
 - Method Summary- All Methods Static Methods Instance Methods Concrete Methods - Modifier and Type - Method - Description - IzMenuItem- addListener(int eventType, org.eclipse.swt.widgets.Listener listener)Adds the listener to the collection of listeners who will be notified when an event of the given type occurs.- void- dispose()Disposes of the menu item.- void- fireSelectionEvent(org.eclipse.swt.widgets.Event event)Fires a selection event to all listeners.- static IzMenuItem- fromEvent(org.eclipse.swt.widgets.Event event)Gets the IzMenuItem from a menu event, typically a selection event.- boolean- getEnabled()Returns- trueif the receiver is enabled, and- falseotherwise.- org.eclipse.swt.graphics.Image- getImage()Returns the receiver's image if it has one, or null if it does not.- boolean- getSelection()Returns- trueif the receiver is selected, and false otherwise.- org.eclipse.swt.widgets.MenuItem- getSWTMenuItem()Returns the SWT menu item for this menu item.- java.lang.String- getText()Returns the receiver's text, which will be an empty string if it has never been set.- java.lang.String- getToolTipText()Gets the tooltip text for the menu item.- boolean- hasSelectionListeners()Verifies if there are selection listeners for the menu item.- boolean- isDisposed()Returns if the menu item is disposed.- boolean- isEnabled()The enabled state is reflected from this menu item state and all parent states.- boolean- isSeparator()Returns if this is a separator.- IzMenuItem- setAccelerator(int accelerator)Sets the accelerator for plain menu items (not cascaded or contribution items).- IzMenuItem- setEnabled(boolean enabled)Enables the receiver if the argument is- true, and disables it otherwise.- IzMenuItem- setImage(org.eclipse.swt.graphics.Image image)Sets the receiver's image to the argument, which may be null indicating that no image should be displayed.- IzMenuItem- setMenu(IzMenu menu)Sets the menu for the cascaded menu item.- IzMenuItem- setSelection(boolean selected)Sets the selection state of the receiver.- IzMenuItem- setText(java.lang.String string)Sets the receiver's text.- IzMenuItem- setToolTipText(java.lang.String toolTip)Sets the tooltip text for the menu item.
 
- Constructor Detail- IzMenuItem- public IzMenuItem(IzMenu menu, int style) Constructor.- NOTE: supported styles: SWT.SEPARATOR, SWT.PUSH, SWT.CHECK, SWT.RADIO and SWT.CASCADE: NO OTHER! - Parameters:
- menu- The parent menu.
- style- The menu item style.
- Throws:
- java.lang.IllegalArgumentException- For invalid styles.
 
 - IzMenuItem- public IzMenuItem(IzMenu menu, java.lang.String text) Constructor for push button menu item.- Parameters:
- menu- The parent menu.
- text- The text, null for none.
- Throws:
- java.lang.IllegalArgumentException- For invalid styles.
 
 - IzMenuItem- public IzMenuItem(IzMenu menu, java.lang.String text, org.eclipse.swt.widgets.Listener selectionListener) Constructor for push button menu item.- Parameters:
- menu- The parent menu.
- text- The text, null for none.
- selectionListener- The selection listener, or null for none.
- Throws:
- java.lang.IllegalArgumentException- For invalid styles.
 
 - IzMenuItem- public IzMenuItem(IzMenu menu, java.lang.String text, org.eclipse.swt.graphics.Image image) Constructor for push button menu item.- Parameters:
- menu- The parent menu.
- text- The text, null for none.
- Throws:
- java.lang.IllegalArgumentException- For invalid styles.
 
 - IzMenuItem- public IzMenuItem(IzMenu menu, java.lang.String text, org.eclipse.swt.graphics.Image image, org.eclipse.swt.widgets.Listener selectionListener) Constructor for push button menu item.- Parameters:
- menu- The parent menu.
- text- The text, null for none.
- image- The image, null for none.
- selectionListener- The selection listener, or null for none.
- Throws:
- java.lang.IllegalArgumentException- For invalid styles.
 
 - IzMenuItem- public IzMenuItem(IzMenu menu, int style, java.lang.String text) Constructor for menu item.- NOTE: supported styles: SWT.SEPARATOR, SWT.PUSH, SWT.CHECK, SWT.RADIO and SWT.CASCADE: NO OTHER! - Parameters:
- menu- The parent menu.
- style- The menu item style.
- text- The text, null for none.
- Throws:
- java.lang.IllegalArgumentException- For invalid styles.
 
 - IzMenuItem- public IzMenuItem(IzMenu menu, int style, java.lang.String text, org.eclipse.swt.widgets.Listener selectionListener) Constructor for menu item.- NOTE: supported styles: SWT.SEPARATOR, SWT.PUSH, SWT.CHECK, SWT.RADIO and SWT.CASCADE: NO OTHER! - Parameters:
- menu- The parent menu.
- style- The menu item style.
- text- The text, null for none.
- selectionListener- The selection listener, or null for none.
- Throws:
- java.lang.IllegalArgumentException- For invalid styles.
 
 - IzMenuItem- public IzMenuItem(IzMenu menu, int style, java.lang.String text, org.eclipse.swt.graphics.Image image) Constructor for menu item.- NOTE: supported styles: SWT.SEPARATOR, SWT.PUSH, SWT.CHECK, SWT.RADIO and SWT.CASCADE: NO OTHER! - Parameters:
- menu- The parent menu.
- style- The menu item style.
- text- The text, null for none.
- image- The image, null for none.
- Throws:
- java.lang.IllegalArgumentException- For invalid styles.
 
 - IzMenuItem- public IzMenuItem(IzMenu menu, int style, java.lang.String text, org.eclipse.swt.graphics.Image image, org.eclipse.swt.widgets.Listener selectionListener) Constructor for menu item.- NOTE: supported styles: SWT.SEPARATOR, SWT.PUSH, SWT.CHECK, SWT.RADIO and SWT.CASCADE: NO OTHER! - Parameters:
- menu- The parent menu.
- style- The menu item style.
- text- The text, null for none.
- image- The image, null for none.
- selectionListener- The selection listener, or null for none.
- Throws:
- java.lang.IllegalArgumentException- For invalid styles.
 
 - IzMenuItem- public IzMenuItem(IzMenu menu, org.eclipse.jface.action.IAction action) Creates a menu item from a action.- Parameters:
- menu- The parent menu.
- action- The action.
- Throws:
- java.lang.NullPointerException- If action is null.
 
 
 - Method Detail- fromEvent- public static final IzMenuItem fromEvent(org.eclipse.swt.widgets.Event event) Gets the IzMenuItem from a menu event, typically a selection event.- Parameters:
- event- The event.
- Returns:
- The menu item that corresponds to the event, null if not found.
 
 - isSeparator- public boolean isSeparator() Returns if this is a separator.
 - setMenu- public IzMenuItem setMenu(IzMenu menu) Sets the menu for the cascaded menu item.- Returns:
- thismenu item to enable concatenation.
- Throws:
- java.lang.IllegalArgumentException- If action or submenu is used, or if a second call to setMenu(menu) is done.
 
 - dispose- public void dispose() Disposes of the menu item.
 - isDisposed- public boolean isDisposed() Returns if the menu item is disposed.- Returns:
- true if disposed, false otherwise.
 
 - setEnabled- public IzMenuItem setEnabled(boolean enabled) Enables the receiver if the argument is- true, and disables it otherwise. A disabled menu item is typically not selectable from the user interface and draws with an inactive or "grayed" look.- Parameters:
- enabled- the new enabled state
- Returns:
- thismenu item to enable concatenation.
- 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
 
- java.lang.IllegalArgumentException- If action or submenu is used.
 
 - getEnabled- public boolean getEnabled() Returns- trueif the receiver is enabled, and- falseotherwise. A disabled menu item is typically not selectable from the user interface and draws with an inactive or "grayed" look.- Returns:
- the receiver's enabled state.
- 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
 
- See Also:
- isEnabled
 
 - isEnabled- public boolean isEnabled() The enabled state is reflected from this menu item state and all parent states.- Returns:
- The enabled state of this menu item within the menu, i.e. if a parent is disabled, then false is returned.
 
 - setSelection- public IzMenuItem setSelection(boolean selected) Sets the selection state of the receiver.- When the receiver is of type - CHECKor- RADIO, it is selected when it is checked.- Parameters:
- selected- the new selection state
- Returns:
- thismenu item to enable concatenation.
- 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
 
- java.lang.IllegalArgumentException- If action or submenu is used.
 
 - getSelection- public boolean getSelection() Returns- trueif the receiver is selected, and false otherwise.- When the receiver is of type - CHECKor- RADIO, it is selected when it is checked.- Returns:
- the selection state
- 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
 
 
 - setImage- public IzMenuItem setImage(org.eclipse.swt.graphics.Image image) Sets the receiver's image to the argument, which may be null indicating that no image should be displayed.- Parameters:
- image- the image to display on the receiver (may be null)
- Returns:
- thismenu item to enable concatenation.
- Throws:
- java.lang.IllegalArgumentException-- ERROR_INVALID_ARGUMENT - if the image has been disposed
 
- 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
 
- java.lang.IllegalArgumentException- If action or submenu is used.
 
 - getImage- public org.eclipse.swt.graphics.Image getImage() Returns the receiver's image if it has one, or null if it does not.- Returns:
- the receiver's image
- 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
 
 
 - setText- public IzMenuItem setText(java.lang.String string) Sets the receiver's text.- Note: If control characters like '\n', '\t' etc. are used in the string, then the behavior is platform dependent. - Parameters:
- string- the new text
- Returns:
- thismenu item to enable concatenation.
- Throws:
- java.lang.IllegalArgumentException-- ERROR_NULL_ARGUMENT - if the text 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
 
- java.lang.IllegalArgumentException- If action or submenu is used.
 
 - getText- public java.lang.String getText() Returns the receiver's text, which will be an empty string if it has never been set.- Returns:
- the receiver's text
- 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
 
 
 - setToolTipText- public IzMenuItem setToolTipText(java.lang.String toolTip) Sets the tooltip text for the menu item.- Parameters:
- toolTip- The tooltip, or null to clear it.
- Returns:
- thismenu item to enable concatenation.
 
 - getToolTipText- public java.lang.String getToolTipText() Gets the tooltip text for the menu item.- Returns:
- The tooltip, or null for none.
 
 - setAccelerator- public IzMenuItem setAccelerator(int accelerator) Sets the accelerator for plain menu items (not cascaded or contribution items). This method will not affect any keyboard processing, merely the display of the accelerator text. It will not change the text if the menu item is visible.- Parameters:
- accelerator- The SWT accelerator or SWT.NONE to clear.
- Returns:
- thismenu item to enable concatenation.
 
 - addListener- public IzMenuItem addListener(int eventType, org.eclipse.swt.widgets.Listener listener) Adds the listener to the collection of listeners who will be notified when an event of the given type occurs. When the event does occur in the widget, the listener is notified by sending it the- handleEvent()message. The event type is one of the event constants defined in class- SWT.- NOTE: Only SWT.Selection is supported. - Parameters:
- eventType- the type of event to listen for
- listener- the listener which should be notified when the event occurs
- Returns:
- thismenu item to enable concatenation.
- 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
 
- java.lang.IllegalArgumentException- if- listener == nullor- eventType != SWT.Selection.
 
 - hasSelectionListeners- public boolean hasSelectionListeners() Verifies if there are selection listeners for the menu item.- Returns:
- true if listeners are present.
 
 - fireSelectionEvent- public void fireSelectionEvent(org.eclipse.swt.widgets.Event event) Fires a selection event to all listeners.- Parameters:
- event- The SWT event.
 
 - getSWTMenuItem- public org.eclipse.swt.widgets.MenuItem getSWTMenuItem() Returns the SWT menu item for this menu item.- Returns:
- The SWT menu item, only set when processing the menu (it is displayed), otherwise this value is null.