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java.lang.Object org.eclipse.swt.widgets.Widget org.eclipse.swt.widgets.Control org.eclipse.swt.widgets.Link
public class Link
Instances of this class represent a selectable user interface object that displays a text with links.
IMPORTANT: This class is not intended to be subclassed.
Constructor Summary | |
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Link(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 | ||
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void |
addSelectionListener(SelectionListener listener)
Adds the listener to the collection of listeners who will be notified when the control is selected, by sending it one of the messages defined in the SelectionListener
interface. |
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Point |
computeSize(int wHint,
int hHint,
boolean changed)
Returns the preferred size of the receiver. |
|
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getAdapter(java.lang.Class<T> adapter)
Implementation of the Adaptable interface. |
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java.lang.String |
getText()
Returns the receiver's text, which will be an empty string if it has never been set. |
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void |
removeSelectionListener(SelectionListener listener)
Removes the listener from the collection of listeners who will be notified when the control is selected. |
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void |
setText(java.lang.String string)
Sets the receiver's text. |
Methods inherited from class org.eclipse.swt.widgets.Widget |
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addDisposeListener, addListener, checkSubclass, checkWidget, dispose, getData, getData, getDisplay, getListeners, getStyle, isDisposed, isListening, notifyListeners, removeDisposeListener, removeListener, reskin, setData, setData, toString |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public Link(Composite parent, int style)
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.
parent
- a composite control which will be the parent of the new instance (cannot be null)style
- the style of control to construct
java.lang.IllegalArgumentException
- SWTException
- Widget.checkSubclass()
,
Widget.getStyle()
Method Detail |
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public void setText(java.lang.String string)
The string can contain both regular text and hyperlinks. A hyperlink is delimited by an anchor tag, <A> and </A>. Within an anchor, a single HREF attribute is supported. When a hyperlink is selected, the text field of the selection event contains either the text of the hyperlink or the value of its HREF, if one was specified. In the rare case of identical hyperlinks within the same string, the HREF tag can be used to distinguish between them. The string may include the mnemonic character and line delimiters.
string
- the new text
java.lang.IllegalArgumentException
- SWTException
- public java.lang.String getText()
SWTException
- public void addSelectionListener(SelectionListener listener)
SelectionListener
interface.
widgetSelected
is called when the control is selected.
widgetDefaultSelected
is not called.
listener
- the listener which should be notified
java.lang.IllegalArgumentException
- SWTException
- SelectionListener
,
removeSelectionListener(org.eclipse.swt.events.SelectionListener)
,
SelectionEvent
public void removeSelectionListener(SelectionListener listener)
listener
- the listener which should no longer be notified
java.lang.IllegalArgumentException
- SWTException
- SelectionListener
,
addSelectionListener(org.eclipse.swt.events.SelectionListener)
public Point computeSize(int wHint, int hHint, boolean changed)
Control
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.
computeSize
in class Control
wHint
- the width hint (can be SWT.DEFAULT
)hHint
- the height hint (can be SWT.DEFAULT
)changed
- true
if the control's contents have changed, and false
otherwise
Layout
,
Control.getBorderWidth()
,
Control.getBounds()
,
Control.getSize()
,
Control.pack(boolean)
,
"computeTrim, getClientArea for controls that implement them"public <T> T getAdapter(java.lang.Class<T> adapter)
Widget
Adaptable
interface.
IMPORTANT: This method is not part of the RWT public API. It is marked public only so that it can be shared within the packages provided by RWT. It should never be accessed from application code.
getAdapter
in interface Adaptable
getAdapter
in class Control
adapter
- the lookup class
null
if
there is no adapter associated with the given class.
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Copyright (c) EclipseSource and others 2002, 2013. All rights reserved. This program and the accompanying materials are made available under the terms of the Eclipse Public License v1.0