org.xwiki.gwt.wysiwyg.client.widget.wizard.util
Class AbstractListSelectorWizardStep<D,L>

java.lang.Object
  org.xwiki.gwt.wysiwyg.client.widget.wizard.util.AbstractSelectorWizardStep<D>
      org.xwiki.gwt.wysiwyg.client.widget.wizard.util.AbstractListSelectorWizardStep<D,L>

Type Parameters:

D - the type of data edited by this wizard step, i.e. expected on initialization and returned as result

L - the type of data to add in the list handled by this wizard step

All Implemented Interfaces:

com.google.gwt.event.dom.client.DoubleClickHandler, com.google.gwt.event.dom.client.KeyUpHandler, com.google.gwt.event.shared.EventHandler, SourcesNavigationEvents, WizardStep

Direct Known Subclasses:

AbstractEntityListSelectorWizardStep

public abstract class AbstractListSelectorWizardStep<D,L>
extends AbstractSelectorWizardStep<D>
implements com.google.gwt.event.dom.client.DoubleClickHandler, com.google.gwt.event.dom.client.KeyUpHandler, SourcesNavigationEvents

Generic wizard step for selecting from a list of items: it handles list creation and population along with item selection on double click and enter. Subclasses should only handle the operations specific to retrieving the items to put in the list and the UI of the list items.

Version:

$Id: AbstractListSelectorWizardStep.java 28948 2010-05-20 17:09:43Z mflorea $

Constructor Summary

AbstractListSelectorWizardStep()
Default constructor, creating the UI of this wizard step.

Method Summary

void	addNavigationListener(NavigationListener listener)
com.google.gwt.user.client.ui.Widget	display()
protected void	displayError() Displays the specified error message and error markers for this wizard step.
protected abstract void	fetchData(com.google.gwt.user.client.rpc.AsyncCallback<java.util.List<L>> callback) Fetches the list of items to be displayed in this list from the server.
protected void	fillList(java.util.List<L> dataList, L selectedData) Fills the list with the given data and selects the specified item.
protected com.google.gwt.user.client.ui.Label	getErrorLabel()
protected ListBox<L>	getList()
protected abstract ListItem<L>	getListItem(L data)
protected VerticalResizePanel	getMainPanel()
protected ListItem<L>	getNewOptionListItem()
protected ListItem<L>	getSelectedItem() Helper method to get the selected item in the list managed by this wizard step.
protected abstract java.lang.String	getSelectErrorMessage()
protected abstract java.lang.String	getSelectHelpLabel()
protected void	hideError() Hides the error markers for this wizard step.
void	init(java.lang.Object data, com.google.gwt.user.client.rpc.AsyncCallback<?> cb)
protected boolean	isSelectedByDefault(L listItemData)
void	onCancel()
void	onDoubleClick(com.google.gwt.event.dom.client.DoubleClickEvent event)
void	onKeyUp(com.google.gwt.event.dom.client.KeyUpEvent event)
void	onSubmit(com.google.gwt.user.client.rpc.AsyncCallback<java.lang.Boolean> async)
protected void	refreshList(com.google.gwt.user.client.rpc.AsyncCallback<?> cb) Reloads the list of image previews in asynchronous manner.
void	removeNavigationListener(NavigationListener listener)
protected abstract void	saveSelectedValue(com.google.gwt.user.client.rpc.AsyncCallback<java.lang.Boolean> async) Saves the current selection in this panel in the data managed by this wizard step, if all validation goes well on the submit time.
void	setActive() Notifies this wizard step that it has been activated, when part of an aggregator for example.
void	setNewOptionOnTop(boolean newOptionOnTop)

Methods inherited from class org.xwiki.gwt.wysiwyg.client.widget.wizard.util.AbstractSelectorWizardStep

getData, getDirectionName, getResult, getValidDirections, initializeSelection

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.xwiki.gwt.user.client.ui.wizard.WizardStep

getNextStep, getStepTitle

Constructor Detail

AbstractListSelectorWizardStep

public AbstractListSelectorWizardStep()

Default constructor, creating the UI of this wizard step.

Method Detail

getSelectHelpLabel

protected abstract java.lang.String getSelectHelpLabel()

Returns:

the help label for this selector step.

getSelectErrorMessage

protected abstract java.lang.String getSelectErrorMessage()

Returns:

the error message to be displayed in case of an error in selection

init

public void init(java.lang.Object data,
                 com.google.gwt.user.client.rpc.AsyncCallback<?> cb)

Specified by:

init in interface WizardStep

Overrides:

init in class AbstractSelectorWizardStep<D>

refreshList

protected void refreshList(com.google.gwt.user.client.rpc.AsyncCallback<?> cb)

Reloads the list of image previews in asynchronous manner.

Parameters:

cb - the callback to handle server call

fetchData

protected abstract void fetchData(com.google.gwt.user.client.rpc.AsyncCallback<java.util.List<L>> callback)

Fetches the list of items to be displayed in this list from the server.

Parameters:

callback - the callback to notify when the fetching is done.

fillList

protected void fillList(java.util.List<L> dataList,
                        L selectedData)

Fills the list with the given data and selects the specified item.

Parameters:

dataList - the list of data to fill the list

selectedData - the data to be selected

isSelectedByDefault

protected boolean isSelectedByDefault(L listItemData)

Parameters:

listItemData - a list item data

Returns:

true of the list item with the given data should be selected by default, false otherwise

getListItem

protected abstract ListItem<L> getListItem(L data)

Parameters:

data - the data to build a list item representation for.

Returns:

a list item for the passed data.

getNewOptionListItem

protected ListItem<L> getNewOptionListItem()

Returns:

an list item representation for a new item to add in the managed list, or null if no such item should be appended to the list.

display

public com.google.gwt.user.client.ui.Widget display()

Specified by:

display in interface WizardStep

onCancel

public void onCancel()

Specified by:

onCancel in interface WizardStep

onSubmit

public void onSubmit(com.google.gwt.user.client.rpc.AsyncCallback<java.lang.Boolean> async)

Specified by:

onSubmit in interface WizardStep

saveSelectedValue

protected abstract void saveSelectedValue(com.google.gwt.user.client.rpc.AsyncCallback<java.lang.Boolean> async)

Saves the current selection in this panel in the data managed by this wizard step, if all validation goes well on the submit time.

Parameters:

async - the object to be notified after the selected value is saved

See Also:

onSubmit(AsyncCallback)

displayError

protected void displayError()

Displays the specified error message and error markers for this wizard step.

hideError

protected void hideError()

Hides the error markers for this wizard step.

onDoubleClick

public void onDoubleClick(com.google.gwt.event.dom.client.DoubleClickEvent event)

Specified by:

onDoubleClick in interface com.google.gwt.event.dom.client.DoubleClickHandler

See Also:

DoubleClickHandler.onDoubleClick(DoubleClickEvent)

onKeyUp

public void onKeyUp(com.google.gwt.event.dom.client.KeyUpEvent event)

Specified by:

onKeyUp in interface com.google.gwt.event.dom.client.KeyUpHandler

addNavigationListener

public void addNavigationListener(NavigationListener listener)

Specified by:

addNavigationListener in interface SourcesNavigationEvents

removeNavigationListener

public void removeNavigationListener(NavigationListener listener)

Specified by:

removeNavigationListener in interface SourcesNavigationEvents

getList

protected ListBox<L> getList()

Returns:

the underlying managed list, to allow subclasses to add extra elements or to style

getSelectedItem

protected ListItem<L> getSelectedItem()

Helper method to get the selected item in the list managed by this wizard step.

Returns:

the selected item in the list managed by this wizard step

getMainPanel

protected VerticalResizePanel getMainPanel()

Returns:

the mainPanel of this wizard step, for the subclasses to append items or change its settings

setNewOptionOnTop

public void setNewOptionOnTop(boolean newOptionOnTop)

Parameters:

newOptionOnTop - set whether the option to add a new item to the list should be added at the top of the list or at its bottom.

setActive

public void setActive()

Notifies this wizard step that it has been activated, when part of an aggregator for example.
FIXME: this function should not be here but in it's own decorating interface for aggregated wizard steps or, cleaner, all wizard steps who need to be notified when they're activated should implement Focusable interface and all wizard step handlers (the dialog, the aggregator) should call setFocus(). This is a quick solution to handle tab change in the selector aggregator.

Overrides:

setActive in class AbstractSelectorWizardStep<D>

getErrorLabel

protected com.google.gwt.user.client.ui.Label getErrorLabel()

Returns:

the errorLabel