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Eclipse Platform
Release 3.5
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org.eclipse.jface.viewers
Class TextCellEditor


java.lang.Object
  extended by 

org.eclipse.jface.viewers.CellEditor
      extended by 
org.eclipse.jface.viewers.TextCellEditor

public class TextCellEditor

extends 
CellEditor

A cell editor that manages a text entry field. The cell editor's value is the text string itself.

This class may be instantiated; it is not intended to be subclassed.

Restriction:
This class is not intended to be subclassed by clients.

Nested Class Summary
 
Nested classes/interfaces inherited from class org.eclipse.jface.viewers. CellEditor
CellEditor.LayoutData
 
Field Summary
protected   Text text
          The text control; initially null.
 
Fields inherited from class org.eclipse.jface.viewers. CellEditor
COPY, CUT, DELETE, FIND, PASTE, REDO, SELECT_ALL, UNDO
 
Constructor Summary
TextCellEditor ()
          Creates a new text string cell editor with no control The cell editor value is the string itself, which is initially the empty string.
TextCellEditor ( Composite parent)
          Creates a new text string cell editor parented under the given control.
TextCellEditor ( Composite parent, int style)
          Creates a new text string cell editor parented under the given control.
 
Method Summary
protected   Control createControl ( Composite parent)
          Creates the control for this cell editor under the given parent control.
protected  boolean dependsOnExternalFocusListener ()
          This implementation of CellEditor.dependsOnExternalFocusListener() returns false if the current instance's class is TextCellEditor, and true otherwise.
protected   Object doGetValue ()
          The TextCellEditor implementation of this CellEditor framework method returns the text string.
protected  void doSetFocus ()
          Sets the focus to the cell editor's control.
protected  void doSetValue ( Object value)
          The TextCellEditor implementation of this CellEditor framework method accepts a text string (type String).
protected  void editOccured ( ModifyEvent e)
          Processes a modify event that occurred in this text cell editor.
  CellEditor.LayoutData getLayoutData ()
          Since a text editor field is scrollable we don't set a minimumSize.
protected  void handleDefaultSelection ( SelectionEvent event)
          Handles a default selection event from the text control by applying the editor value and deactivating this cell editor.
 boolean isCopyEnabled ()
          The TextCellEditor implementation of this CellEditor method returns true if the current selection is not empty.
 boolean isCutEnabled ()
          The TextCellEditor implementation of this CellEditor method returns true if the current selection is not empty.
 boolean isDeleteEnabled ()
          The TextCellEditor implementation of this CellEditor method returns true if there is a selection or if the caret is not positioned at the end of the text.
 boolean isPasteEnabled ()
          The TextCellEditor implementation of this CellEditor method always returns true.
 boolean isSaveAllEnabled ()
          Check if save all is enabled
 boolean isSelectAllEnabled ()
          Returns true if this cell editor is able to perform the select all action.
protected  void keyReleaseOccured ( KeyEvent keyEvent)
          Processes a key release event that occurred in this cell editor.
 void performCopy ()
          The TextCellEditor implementation of this CellEditor method copies the current selection to the clipboard.
 void performCut ()
          The TextCellEditor implementation of this CellEditor method cuts the current selection to the clipboard.
 void performDelete ()
          The TextCellEditor implementation of this CellEditor method deletes the current selection or, if there is no selection, the character next character from the current position.
 void performPaste ()
          The TextCellEditor implementation of this CellEditor method pastes the the clipboard contents over the current selection.
 void performSelectAll ()
          The TextCellEditor implementation of this CellEditor method selects all of the current text.
 
Methods inherited from class org.eclipse.jface.viewers. CellEditor
activate, activate, addListener, addPropertyChangeListener, create, deactivate, deactivate, dispose, fireApplyEditorValue, fireCancelEditor, fireEditorValueChanged, fireEnablementChanged, focusLost, getControl, getDoubleClickTimeout, getErrorMessage, getStyle, getValidator, getValue, isActivated, isCorrect, isDirty, isFindEnabled, isRedoEnabled, isUndoEnabled, isValueValid, markDirty, performFind, performRedo, performUndo, removeListener, removePropertyChangeListener, setErrorMessage, setFocus, setStyle, setValidator, setValue, setValueValid, valueChanged
 
Methods inherited from class java.lang. Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

text

protected 
Text text
The text control; initially null.

Constructor Detail

TextCellEditor

public TextCellEditor()
Creates a new text string cell editor with no control The cell editor value is the string itself, which is initially the empty string. Initially, the cell editor has no cell validator.

Since:
2.1

TextCellEditor

public TextCellEditor(
Composite parent)
Creates a new text string cell editor parented under the given control. The cell editor value is the string itself, which is initially the empty string. Initially, the cell editor has no cell validator.

Parameters:
parent - the parent control

TextCellEditor

public TextCellEditor(
Composite parent,
                      int style)
Creates a new text string cell editor parented under the given control. The cell editor value is the string itself, which is initially the empty string. Initially, the cell editor has no cell validator.

Parameters:
parent - the parent control
style - the style bits
Since:
2.1
Method Detail

createControl

protected 
Control createControl(
Composite parent)
Description copied from class: CellEditor
Creates the control for this cell editor under the given parent control.

This framework method must be implemented by concrete subclasses.

Specified by:
createControl in class CellEditor
Parameters:
parent - the parent control
Returns:
the new control, or null if this cell editor has no control

doGetValue

protected 
Object doGetValue()
The TextCellEditor implementation of this CellEditor framework method returns the text string.

Specified by:
doGetValue in class CellEditor
Returns:
the text string
See Also:
CellEditor.getValue()

doSetFocus

protected void doSetFocus()
Description copied from class: CellEditor
Sets the focus to the cell editor's control.

This framework method must be implemented by concrete subclasses.

Specified by:
doSetFocus in class CellEditor
See Also:
CellEditor.setFocus()

doSetValue

protected void doSetValue(
Object value)
The TextCellEditor implementation of this CellEditor framework method accepts a text string (type String).

Specified by:
doSetValue in class CellEditor
Parameters:
value - a text string (type String)
See Also:
CellEditor.setValue(java.lang.Object)

editOccured

protected void editOccured(
ModifyEvent e)
Processes a modify event that occurred in this text cell editor. This framework method performs validation and sets the error message accordingly, and then reports a change via fireEditorValueChanged. Subclasses should call this method at appropriate times. Subclasses may extend or reimplement.

Parameters:
e - the SWT modify event

getLayoutData

public 
CellEditor.LayoutData getLayoutData()
Since a text editor field is scrollable we don't set a minimumSize.

Overrides:
getLayoutData in class CellEditor
Returns:
the layout data object

handleDefaultSelection

protected void handleDefaultSelection(
SelectionEvent event)
Handles a default selection event from the text control by applying the editor value and deactivating this cell editor.

Parameters:
event - the selection event
Since:
3.0

isCopyEnabled

public boolean isCopyEnabled()
The TextCellEditor implementation of this CellEditor method returns true if the current selection is not empty.

Overrides:
isCopyEnabled in class CellEditor
Returns:
true if copy is possible, false otherwise

isCutEnabled

public boolean isCutEnabled()
The TextCellEditor implementation of this CellEditor method returns true if the current selection is not empty.

Overrides:
isCutEnabled in class CellEditor
Returns:
true if cut is possible, false otherwise

isDeleteEnabled

public boolean isDeleteEnabled()
The TextCellEditor implementation of this CellEditor method returns true if there is a selection or if the caret is not positioned at the end of the text.

Overrides:
isDeleteEnabled in class CellEditor
Returns:
true if delete is possible, false otherwise

isPasteEnabled

public boolean isPasteEnabled()
The TextCellEditor implementation of this CellEditor method always returns true.

Overrides:
isPasteEnabled in class CellEditor
Returns:
true if paste is possible, false otherwise

isSaveAllEnabled

public boolean isSaveAllEnabled()
Check if save all is enabled

Returns:
true if it is

isSelectAllEnabled

public boolean isSelectAllEnabled()
Returns true if this cell editor is able to perform the select all action.

This default implementation always returns false.

Subclasses may override

Overrides:
isSelectAllEnabled in class CellEditor
Returns:
true if select all is possible, false otherwise

keyReleaseOccured

protected void keyReleaseOccured(
KeyEvent keyEvent)
Processes a key release event that occurred in this cell editor.

The TextCellEditor implementation of this framework method ignores when the RETURN key is pressed since this is handled in handleDefaultSelection. An exception is made for Ctrl+Enter for multi-line texts, since a default selection event is not sent in this case.

Overrides:
keyReleaseOccured in class CellEditor
Parameters:
keyEvent - the key event

performCopy

public void performCopy()
The TextCellEditor implementation of this CellEditor method copies the current selection to the clipboard.

Overrides:
performCopy in class CellEditor

performCut

public void performCut()
The TextCellEditor implementation of this CellEditor method cuts the current selection to the clipboard.

Overrides:
performCut in class CellEditor

performDelete

public void performDelete()
The TextCellEditor implementation of this CellEditor method deletes the current selection or, if there is no selection, the character next character from the current position.

Overrides:
performDelete in class CellEditor

performPaste

public void performPaste()
The TextCellEditor implementation of this CellEditor method pastes the the clipboard contents over the current selection.

Overrides:
performPaste in class CellEditor

performSelectAll

public void performSelectAll()
The TextCellEditor implementation of this CellEditor method selects all of the current text.

Overrides:
performSelectAll in class CellEditor

dependsOnExternalFocusListener

protected boolean dependsOnExternalFocusListener()
This implementation of CellEditor.dependsOnExternalFocusListener() returns false if the current instance's class is TextCellEditor, and true otherwise. Subclasses that hook their own focus listener should override this method and return false. See also bug 58777.

Overrides:
dependsOnExternalFocusListener in class CellEditor
Returns:
true to indicate that a focus listener has to be attached
Since:
3.4
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Eclipse Platform
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