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Eclipse Platform
Release 3.5
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SUMMARY: NESTED | FIELD | CONSTR |  METHOD DETAIL: FIELD | CONSTR |  METHOD

org.eclipse.jface.contentassist
Interface IContentAssistSubjectControl

All Known Implementing Classes:
AbstractControlContentAssistSubjectAdapter, ComboContentAssistSubjectAdapter, TextContentAssistSubjectAdapter 
public interface IContentAssistSubjectControl

A content assist subject control can request assistance provided by a subject control content assistant.

Since:
3.0

Method Summary
 void addKeyListener ( KeyListener keyListener)
          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.
 boolean addSelectionListener ( SelectionListener selectionListener)
          If supported, adds a selection listener.
 boolean appendVerifyKeyListener ( VerifyKeyListener verifyKeyListener)
          If supported, appends a verify key listener to the viewer's list of verify key listeners.
 int getCaretOffset ()
          Returns the caret position relative to the start of the text in widget coordinates.
  Control getControl ()
          Returns the control of this content assist subject control.
  IDocument getDocument ()
          Returns this content assist subject control's document.
  String getLineDelimiter ()
          Returns the line delimiter used for entering new lines by key down or paste operation.
 int getLineHeight ()
          Returns the line height.
  Point getLocationAtOffset (int offset)
          Returns the x, y location of the upper left corner of the character bounding box at the specified offset in the text.
  Point getSelectedRange ()
          Returns the selected range.
  Point getWidgetSelectionRange ()
          Returns the selected range in the subject's widget.
 boolean prependVerifyKeyListener ( VerifyKeyListener verifyKeyListener)
          If supported, inserts the verify key listener at the beginning of this content assist subject's list of verify key listeners.
 void removeKeyListener ( KeyListener keyListener)
          Removes the listener from the collection of listeners who will be notified when keys are pressed and released on the system keyboard.
 void removeSelectionListener ( SelectionListener selectionListener)
          Removes the specified selection listener.
 void removeVerifyKeyListener ( VerifyKeyListener verifyKeyListener)
          Removes the verify key listener from this content assist subject control's list of verify key listeners.
 void revealRange (int offset, int length)
          Reveals the given region.
 void setEventConsumer ( IEventConsumer eventConsumer)
          If supported, registers an event consumer with this content assist subject.
 void setSelectedRange (int offset, int length)
          Sets the selected range.
 boolean supportsVerifyKeyListener ()
          Tests whether a verify key listener can be added either using prependVerifyKeyListener or appendVerifyKeyListener(VerifyKeyListener).
 

Method Detail

getControl


Control getControl()
Returns the control of this content assist subject control.

Returns:
the control of this content assist subject control

getLineHeight

int getLineHeight()
Returns the line height.

Returns:
line height in pixel
Throws:
SWTException - in these cases:

getCaretOffset

int getCaretOffset()
Returns the caret position relative to the start of the text in widget coordinates.

Returns:
the caret position relative to the start of the text in widget coordinates
Throws:
SWTException - in these cases:

getLocationAtOffset


Point getLocationAtOffset(int offset)
Returns the x, y location of the upper left corner of the character bounding box at the specified offset in the text. The point is relative to the upper left corner of the widget client area.

Parameters:
offset - widget offset relative to the start of the content 0 <= offset <= getCharCount()
Returns:
x, y location of the upper left corner of the character bounding box at the specified offset in the text
Throws:
SWTException - in these cases:
IllegalArgumentException - when the offset is outside the valid range

getLineDelimiter


String getLineDelimiter()
Returns the line delimiter used for entering new lines by key down or paste operation.

Returns:
line delimiter used for entering new lines by key down or paste operation
Throws:
SWTException - in these cases:

getWidgetSelectionRange


Point getWidgetSelectionRange()
Returns the selected range in the subject's widget.

Returns:
start and length of the selection, x is the offset of the
Throws:
SWTException - in these cases:

getSelectedRange


Point getSelectedRange()
Returns the selected range.

Returns:
start and length of the selection, x is the offset and y the length based on the subject's model (e.g. document)

setSelectedRange

void setSelectedRange(int offset,
                      int length)
Sets the selected range. Offset and length based on the subject's model (e.g. document).

Parameters:
offset - the offset of the selection based on the subject's model e.g. document
length - the length of the selection based on the subject's model e.g. document

revealRange

void revealRange(int offset,
                 int length)
Reveals the given region. Offset and length based on the subject's model (e.g. document).

Parameters:
offset - the offset of the selection based on the subject's model e.g. document
length - the length of the selection based on the subject's model e.g. document

getDocument


IDocument getDocument()
Returns this content assist subject control's document.

Returns:
the viewer's input document

appendVerifyKeyListener

boolean appendVerifyKeyListener(
VerifyKeyListener verifyKeyListener)
If supported, appends a verify key listener to the viewer's list of verify key listeners. If the listener is already registered with the viewer this call moves the listener to the end of the list.

Note: This content assist subject control may not support appending a verify listener, in which case false will be returned. If this content assist subject control only supports addVerifyKeyListener then this method can be used but prependVerifyKeyListener must return false.

Parameters:
verifyKeyListener - the listener to be added
Returns:
true if the listener was added

prependVerifyKeyListener

boolean prependVerifyKeyListener(
VerifyKeyListener verifyKeyListener)
If supported, inserts the verify key listener at the beginning of this content assist subject's list of verify key listeners. If the listener is already registered with the viewer this call moves the listener to the beginning of the list.

Note: This content assist subject control may not support prepending a verify listener, in which case false will be returned. However, appendVerifyKeyListener(VerifyKeyListener) might work.

Parameters:
verifyKeyListener - the listener to be inserted
Returns:
true if the listener was added

removeVerifyKeyListener

void removeVerifyKeyListener(
VerifyKeyListener verifyKeyListener)
Removes the verify key listener from this content assist subject control's list of verify key listeners. If the listener is not registered, this call has no effect.

Parameters:
verifyKeyListener - the listener to be removed

supportsVerifyKeyListener

boolean supportsVerifyKeyListener()
Tests whether a verify key listener can be added either using prependVerifyKeyListener or appendVerifyKeyListener(VerifyKeyListener).

Returns:
true if adding verify key listeners is supported

addKeyListener

void addKeyListener(
KeyListener keyListener)
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.

Parameters:
keyListener - the listener which should be notified
Throws:
IllegalArgumentException - if the listener is null
SWTException - in these cases:
See Also:
KeyListener, removeKeyListener(KeyListener)

removeKeyListener

void removeKeyListener(
KeyListener keyListener)
Removes the listener from the collection of listeners who will be notified when keys are pressed and released on the system keyboard.

Parameters:
keyListener - the listener which should be notified
Throws:
IllegalArgumentException - if the listener is null
SWTException - in these cases:
See Also:
KeyListener, addKeyListener(KeyListener)

setEventConsumer

void setEventConsumer(
IEventConsumer eventConsumer)
If supported, registers an event consumer with this content assist subject.

Parameters:
eventConsumer - the content assist subject control's event consumer. null is a valid argument.

removeSelectionListener

void removeSelectionListener(
SelectionListener selectionListener)
Removes the specified selection listener.

Parameters:
selectionListener - the listener
Throws:
SWTException -

addSelectionListener

boolean addSelectionListener(
SelectionListener selectionListener)
If supported, adds a selection listener. A Selection event is sent by the widget when the selection has changed.

Parameters:
selectionListener - the listener
Returns:
true if adding a selection listener is supported
Throws:
IllegalArgumentException - if listener is null
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Eclipse Platform
Release 3.5
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