Class semper.preferences.PrefFieldLabel 
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Class semper.preferences.PrefFieldLabel 

java.lang.Object
   |
   +----semper.preferences.PrefField
           |
           +----semper.preferences.PrefFieldLabel
public class PrefFieldLabel
extends PrefField
A label field is only a information string with _NO_ input/output facilities. This is used to put some information text in a preferences group.
Version:
$Revision: 1.11 $ $Date: 1997/02/04 17:54:18 $
Author:
Louis Salvail (CWI)
See Also:
PrefFieldString, PrefFieldChoice, PrefFieldNegotiable, PrefFieldCheckBox

Constructor Index

o PrefFieldLabel()
Contructor used by newInstance for internalization.
o PrefFieldLabel(String, String)
Constructor for strings fields with defaults constraints.
o PrefFieldLabel(String, String, GridBagConstraints)
Constructor for strings fields.

Method Index

o applyModification()
No user modification are possible on a label field.
o cancel()
This method does nothing because the user cannot change a PrefFieldLabel, so no cancel is needed.
o getValue()
this method returns the String for that label.
o isModified()
A label field is never modified so this method return always false.
o isOK()
A label is always ok because it is never modified by the user.
o myStreamSize()
This returns the size of the stream that would hold the externalized form of this field.
o readObject(StreamInputInterface)
Internalizes this label field.
o setAlignement(int)
This sets the font for that label.
o setValue(Object)
Can be used to change the label.
o showme(PrefFrame)
This adds the label to the given frame.
o writeObject(StreamOutputInterface)
Externalizes this label field.

Constructors

o PrefFieldLabel 
  public PrefFieldLabel(String fieldname,
                        String theText,
                        GridBagConstraints constraint)
Constructor for strings fields. None of the input parameters should be null.
Parameters:
fieldname - is the string by which this component is accessed through the preferences manager.
theText - is the text for that label.
constraints - is the set of GridBagConstraints for that component. The internal constraints representation is a clone of the input.
Returns:
the new object.
See Also:
GridBagConstraints, Label
o PrefFieldLabel 
  public PrefFieldLabel(String fieldname,
                        String theText)
Constructor for strings fields with defaults constraints. None of the input paramaters should be null.
Parameters:
fieldname - is the string by which this component is accessed through the preferences manager.
theText - is the text for that label.
Returns:
the new object with the appropriate text.
See Also:
GridBagConstraints, Label
o PrefFieldLabel 
  public PrefFieldLabel()
Contructor used by newInstance for internalization.
Returns:
a new empty object.

Methods

o showme 
  public void showme(PrefFrame p)
This adds the label to the given frame.
Parameters:
p - is the frame in which the label is added.
Returns:
none.
Overrides:
showme in class PrefField
o getValue 
  public Object getValue()
this method returns the String for that label.
Returns:
the string.
Overrides:
getValue in class PrefField
o setValue 
  public void setValue(Object newval)
Can be used to change the label.
Parameters:
newval - is the new string. This should be a String object.
Returns:
none.
Overrides:
setValue in class PrefField
o setAlignement 
  public void setAlignement(int a)
This sets the font for that label.
Parameters:
f - is the font.
a - is the alignment.
Returns:
none. public void setFont(Font f){ appearance.setFont(f); } /** This to set the algnement. Not implemented yet.
See Also:
Label
o isModified 
  public boolean isModified()
A label field is never modified so this method return always false.
Returns:
false.
Overrides:
isModified in class PrefField
o applyModification 
  public boolean applyModification()
No user modification are possible on a label field.
Returns:
true because the no-modification is always accepted.
Overrides:
applyModification in class PrefField
o cancel 
  public void cancel()
This method does nothing because the user cannot change a PrefFieldLabel, so no cancel is needed.
Returns:
none.
Overrides:
cancel in class PrefField
o isOK 
  public boolean isOK()
A label is always ok because it is never modified by the user.
Returns:
true.
Overrides:
isOK in class PrefField
o myStreamSize 
  public int myStreamSize() throws StreamIOException
This returns the size of the stream that would hold the externalized form of this field.
Returns:
the size of the stream in bytes
Overrides:
myStreamSize in class PrefField
See Also:
Streamable
o readObject 
  public void readObject(StreamInputInterface stream) throws StreamIOException
Internalizes this label field.
Parameters:
stream - is the stream of data the object state is retrieved from
Returns:
none.
Overrides:
readObject in class PrefField
See Also:
Streamable
o writeObject 
  public void writeObject(StreamOutputInterface stream) throws StreamIOException
Externalizes this label field.
Parameters:
stream - is the stream of data the object state is recorded in
Returns:
none
Overrides:
writeObject in class PrefField
See Also:
Streamable 
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