org.eclipse.jface.databinding.viewers
Class ObservableValueEditingSupport
java.lang.Object
org.eclipse.jface.viewers.EditingSupport
org.eclipse.jface.databinding.viewers.ObservableValueEditingSupport
-
public abstract class ObservableValueEditingSupport
- extends
EditingSupport
EditingSupport using the JFace Data Binding concepts to handle the
updating of an element from a
CellEditor.
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Since:
- 1.2
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Methods inherited from class java.lang.
Object
|
clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait
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ObservableValueEditingSupport
public ObservableValueEditingSupport(
ColumnViewer viewer,
DataBindingContext dbc)
- Constructs a new instance with the provided
viewer and
dbc.
-
Parameters:
-
viewer - viewer to edit -
dbc - dbc to create Bindings
create
public static
EditingSupport create(
ColumnViewer viewer,
DataBindingContext dbc,
CellEditor cellEditor,
org.eclipse.core.databinding.property.value.IValueProperty cellEditorProperty,
org.eclipse.core.databinding.property.value.IValueProperty elementProperty)
- Returns an ObservableValueEditingSupport instance which binds the given
cell editor property to the given element property.
-
-
Parameters:
-
viewer - the column viewer -
dbc - the DataBindingContext used for binding between the cell
editor and the viewer element. -
cellEditor - the cell editor -
cellEditorProperty - the cell editor property to be bound to the element. -
elementProperty - the element property to be bound to the cell editor.
-
Returns:
- an ObservableValueEditingSupport instance using the given
arguments.
-
Since:
- 1.3
canEdit
protected boolean canEdit(
Object element)
- Default implementation always returns
true.
-
-
Specified by:
-
canEdit
in class
EditingSupport
-
-
Parameters:
-
element - the model element
-
Returns:
- true if editable
-
See Also:
-
EditingSupport.canEdit(java.lang.Object)
getValue
protected
Object getValue(
Object element)
- Default implementation always returns
null as this will be
handled by the Binding.
-
-
Specified by:
-
getValue
in class
EditingSupport
-
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Parameters:
-
element - the model element
-
Returns:
- the value shown
-
See Also:
-
EditingSupport.getValue(java.lang.Object)
setValue
protected void setValue(
Object element,
Object value)
- Default implementation does nothing as this will be handled by the
Binding.
-
-
Specified by:
-
setValue
in class
EditingSupport
-
-
Parameters:
-
element - the model element -
value - the new value -
See Also:
-
EditingSupport.setValue(java.lang.Object, java.lang.Object)
initializeCellEditorValue
protected final void initializeCellEditorValue(
CellEditor cellEditor,
ViewerCell cell)
- Creates a
Binding between the editor and the element to be
edited. Invokes
doCreateCellEditorObservable(CellEditor),
doCreateElementObservable(Object, ViewerCell), and then
createBinding(IObservableValue, IObservableValue).
-
-
Overrides:
-
initializeCellEditorValue
in class
EditingSupport
-
-
Parameters:
-
cellEditor - the cell editor -
cell - the cell the editor is working for
doCreateCellEditorObservable
protected abstract
IObservableValue doCreateCellEditorObservable(
CellEditor cellEditor)
- Creates the observable value for the CellEditor.
-
-
Parameters:
-
cellEditor -
-
Returns:
- observable value
doCreateElementObservable
protected abstract
IObservableValue doCreateElementObservable(
Object element,
ViewerCell cell)
- Creates the observable value for the element.
-
-
Parameters:
-
element - -
cell -
-
Returns:
- observable value
createBinding
protected
Binding createBinding(
IObservableValue target,
IObservableValue model)
- Creates a new binding for the provided
target and
model. Default
value update strategies are used with the target to model updating on
UpdateValueStrategy.POLICY_CONVERT.
-
-
Parameters:
-
target - -
model -
-
Returns:
- binding
saveCellEditorValue
protected final void saveCellEditorValue(
CellEditor cellEditor,
ViewerCell cell)
- Updates the model from the target.
-
-
Overrides:
-
saveCellEditorValue
in class
EditingSupport
-
-
Parameters:
-
cellEditor - the cell-editor -
cell - the cell the editor is working for
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Copyright (c) Eclipse contributors and others 2000, 2008. All rights reserved.
