bibliothek.extension.gui.dock.preference

Interface PreferenceEditor<V>

Type Parameters:

V - the kind of value this editor edits

All Known Implementing Classes:

BooleanEditor, ChoiceEditor, KeyStrokeEditor, LabelEditor, ModifierMaskEditor, StringEditor

public interface PreferenceEditor<V>

An editor configures a Component which is used to edit some value. How exactly this component is configured depends on the meta-information extracted from the preference which is edited.
An editor communicates with its surroundings through a callback. The editor can ask its parent to show some buttons which represent operations this editor can execute. For example an editor could ask its parent to show a "reset value to default"-button. The editor manages these buttons by calling PreferenceEditorCallback.setOperation(PreferenceOperation, boolean) and by implementing doOperation(PreferenceOperation).

Author:

Benjamin Sigg

Method Summary

Modifier and Type	Method and Description
void	doOperation(PreferenceOperation operation) Executes the operation that matches operation or does nothing if operation is unknown.
Component	getComponent() Gets a component which displays the contents of this editor.
V	getValue() Gets the value of this editor. Note: editors should call PreferenceEditorCallback.set(Object) when their value got edited by the user.
void	setCallback(PreferenceEditorCallback<V> callback) Sets a callback, a callback can be used to read the value that has to be edited or to store the edited value. Note: this editor should call PreferenceEditorCallback.set(Object) whenever this editor shows a new valid value.
void	setValue(V value) Sets the current value of this editor.
void	setValueInfo(Object information) Sets information about the value that is shown.

Method Detail

getComponent

Component getComponent()

Gets a component which displays the contents of this editor.

Returns:

the component, not null

setCallback

void setCallback(PreferenceEditorCallback<V> callback)

Sets a callback, a callback can be used to read the value that has to be edited or to store the edited value.
Note: this editor should call PreferenceEditorCallback.set(Object) whenever this editor shows a new valid value.

Parameters:

callback - the callback, might be null

setValueInfo

void setValueInfo(Object information)

Sets information about the value that is shown. This method is called before setValue(Object). This method might be called with a null argument when the editor is no longer needed.

Parameters:

information - the information, may be null

setValue

void setValue(V value)

Sets the current value of this editor.

Parameters:

value - the value, might be null

getValue

V getValue()

Gets the value of this editor.
Note: editors should call PreferenceEditorCallback.set(Object) when their value got edited by the user. An editor should not expect a call to this method.

Returns:

the value, might be null

doOperation

void doOperation(PreferenceOperation operation)

Executes the operation that matches operation or does nothing if operation is unknown.

Parameters:

operation - the operation that was triggered