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com.google.gwt.cell.client
Class EditTextCell

java.lang.Object
  extended by com.google.gwt.cell.client.AbstractCell<C>
      extended by com.google.gwt.cell.client.AbstractEditableCell<java.lang.String,EditTextCell.ViewData>
          extended by com.google.gwt.cell.client.EditTextCell
All Implemented Interfaces:
Cell<java.lang.String>
public class EditTextCell
extends AbstractEditableCell<java.lang.String,EditTextCell.ViewData>

An editable text cell. Click to edit, escape to cancel, return to commit.

Nested Class Summary
(package private) static interface EditTextCell.Template
           
(package private) static class EditTextCell.ViewData
          The view data object used by this cell.
 
Nested classes/interfaces inherited from interface com.google.gwt.cell.client.Cell
Cell.Context
 
Constructor Summary
EditTextCell()
          Construct a new EditTextCell that will use a SimpleSafeHtmlRenderer.
EditTextCell(SafeHtmlRenderer<java.lang.String> renderer)
          Construct a new EditTextCell that will use a given SafeHtmlRenderer to render the value when not in edit mode.
 
Method Summary
protected  void edit(Cell.Context context, Element parent, java.lang.String value)
          Convert the cell to edit mode.
 boolean isEditing(Cell.Context context, Element parent, java.lang.String value)
          Returns true if the cell is currently editing the data identified by the given element and key.
 void onBrowserEvent(Cell.Context context, Element parent, java.lang.String value, NativeEvent event, ValueUpdater<java.lang.String> valueUpdater)
          Handle a browser event that took place within the cell.
 void render(Cell.Context context, java.lang.String value, SafeHtmlBuilder sb)
          Render a cell as HTML into a SafeHtmlBuilder, suitable for passing to Element.setInnerHTML(String) on a container element.
 boolean resetFocus(Cell.Context context, Element parent, java.lang.String value)
          Reset focus on the Cell.
 
Methods inherited from class com.google.gwt.cell.client.AbstractEditableCell
clearViewData, getViewData, setViewData
 
Methods inherited from class com.google.gwt.cell.client.AbstractCell
dependsOnSelection, getConsumedEvents, handlesSelection, onEnterKeyDown, setValue
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

EditTextCell

public EditTextCell()
Construct a new EditTextCell that will use a SimpleSafeHtmlRenderer.

EditTextCell

public EditTextCell(SafeHtmlRenderer<java.lang.String> renderer)
Construct a new EditTextCell that will use a given SafeHtmlRenderer to render the value when not in edit mode.

Parameters:
renderer - a SafeHtmlRenderer instance
Method Detail

isEditing

public boolean isEditing(Cell.Context context,
                         Element parent,
                         java.lang.String value)
Description copied from class: AbstractEditableCell
Returns true if the cell is currently editing the data identified by the given element and key. While a cell is editing, widgets containing the cell may choose to pass keystrokes directly to the cell rather than using them for navigation purposes.

Specified by:
isEditing in interface Cell<java.lang.String>
Specified by:
isEditing in class AbstractEditableCell<java.lang.String,EditTextCell.ViewData>
Parameters:
context - the Context of the cell
parent - the parent Element
value - the value associated with the cell
Returns:
true if the cell is in edit mode

onBrowserEvent

public void onBrowserEvent(Cell.Context context,
                           Element parent,
                           java.lang.String value,
                           NativeEvent event,
                           ValueUpdater<java.lang.String> valueUpdater)
Description copied from class: AbstractCell
Handle a browser event that took place within the cell. The default implementation returns null.

If you override this method to add support for events, remember to pass the event types that the cell expects into the constructor.

Specified by:
onBrowserEvent in interface Cell<java.lang.String>
Overrides:
onBrowserEvent in class AbstractCell<java.lang.String>
Parameters:
context - the Cell.Context of the cell
parent - the parent Element
value - the value associated with the cell
event - the native browser event
valueUpdater - a ValueUpdater, or null if not specified

render

public void render(Cell.Context context,
                   java.lang.String value,
                   SafeHtmlBuilder sb)
Description copied from interface: Cell
Render a cell as HTML into a SafeHtmlBuilder, suitable for passing to Element.setInnerHTML(String) on a container element.

Note: If your cell contains natively focusable elements, such as buttons or input elements, be sure to set the tabIndex to -1 so that they do not steal focus away from the containing widget.

Specified by:
render in interface Cell<java.lang.String>
Specified by:
render in class AbstractCell<java.lang.String>
Parameters:
context - the Cell.Context of the cell
value - the cell value to be rendered
sb - the SafeHtmlBuilder to be written to

resetFocus

public boolean resetFocus(Cell.Context context,
                          Element parent,
                          java.lang.String value)
Description copied from class: AbstractCell
Reset focus on the Cell. This method is called if the cell has focus when it is refreshed.

This method is a no-op and returns false. If your cell is editable or can be focused by the user, override this method to reset focus when the containing widget is refreshed.

Specified by:
resetFocus in interface Cell<java.lang.String>
Overrides:
resetFocus in class AbstractCell<java.lang.String>
Parameters:
context - the Cell.Context of the cell
parent - the parent Element
value - the value associated with the cell
Returns:
true if focus is taken, false if not

edit

protected void edit(Cell.Context context,
                    Element parent,
                    java.lang.String value)
Convert the cell to edit mode.

Parameters:
context - the Context of the cell
parent - the parent element
value - the current value
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