public abstract class ComplexPanel extends Panel implements IndexedPanel.ForIsWidget
UIObject.DebugIdImpl, UIObject.DebugIdImplEnabledIndexedPanel.ForIsWidgetHasWidgets.ForIsWidgeteventsToSinkDEBUG_ID_PREFIX, MISSING_ELEMENT_ERROR, SETELEMENT_TWICE_ERROR| Constructor and Description |
|---|
ComplexPanel() |
| Modifier and Type | Method and Description |
|---|---|
protected void |
add(Widget child,
Element container)
Adds a new child widget to the panel, attaching its Element to the
specified container Element.
|
protected int |
adjustIndex(Widget child,
int beforeIndex)
Adjusts beforeIndex to account for the possibility that the given widget is
already a child of this panel.
|
protected void |
checkIndexBoundsForAccess(int index)
Checks that
index is in the range [0, getWidgetCount()), which
is the valid range on accessible indexes. |
protected void |
checkIndexBoundsForInsertion(int index)
Checks that
index is in the range [0, getWidgetCount()], which
is the valid range for indexes on an insertion. |
(package private) void |
doLogicalClear() |
protected WidgetCollection |
getChildren()
Gets the list of children contained in this panel.
|
Widget |
getWidget(int index)
Gets the child widget at the specified index.
|
int |
getWidgetCount()
Gets the number of child widgets in this panel.
|
int |
getWidgetIndex(IsWidget child) |
int |
getWidgetIndex(Widget child)
Gets the index of the specified child widget.
|
protected void |
insert(Widget child,
Element container,
int beforeIndex)
Deprecated.
Use
insert(Widget, Element, int, boolean) instead |
protected void |
insert(Widget child,
Element container,
int beforeIndex,
boolean domInsert)
Insert a new child Widget into this Panel at a specified index, attaching
its Element to the specified container Element.
|
java.util.Iterator<Widget> |
iterator()
Gets an iterator for the contained widgets.
|
boolean |
remove(int index)
Removes the widget at the specified index.
|
boolean |
remove(Widget w)
Removes a child widget.
|
add, add, adopt, adopt, clear, disown, doAttachChildren, doDetachChildren, orphan, removeaddAttachHandler, addBitlessDomHandler, addDomHandler, addHandler, asWidget, asWidgetOrNull, createHandlerManager, delegateEvent, ensureHandlers, fireEvent, getHandlerCount, getHandlerManager, getLayoutData, getParent, isAttached, isOrWasAttached, onAttach, onBrowserEvent, onDetach, onLoad, onUnload, removeFromParent, replaceElement, setLayoutData, setParent, sinkEventsaddStyleDependentName, addStyleName, ensureDebugId, ensureDebugId, ensureDebugId, getAbsoluteLeft, getAbsoluteTop, getElement, getOffsetHeight, getOffsetWidth, getStyleElement, getStyleName, getStyleName, getStylePrimaryName, getStylePrimaryName, getTitle, isVisible, isVisible, onEnsureDebugId, removeStyleDependentName, removeStyleName, resolvePotentialElement, setElement, setElement, setHeight, setPixelSize, setSize, setStyleDependentName, setStyleName, setStyleName, setStyleName, setStyleName, setStylePrimaryName, setStylePrimaryName, setTitle, setVisible, setVisible, setWidth, sinkBitlessEvent, toString, unsinkEventspublic Widget getWidget(int index)
IndexedPanelgetWidget in interface IndexedPanelindex - the child widget's indexpublic int getWidgetCount()
IndexedPanelgetWidgetCount in interface IndexedPanelpublic int getWidgetIndex(Widget child)
IndexedPanelgetWidgetIndex in interface IndexedPanelchild - the widget to be found-1 if it is not a child of this
panelpublic int getWidgetIndex(IsWidget child)
getWidgetIndex in interface IndexedPanel.ForIsWidgetpublic java.util.Iterator<Widget> iterator()
HasWidgetsIterator.remove().iterator in interface HasWidgetsiterator in interface java.lang.Iterable<Widget>public boolean remove(int index)
IndexedPanelremove in interface IndexedPanelindex - the index of the widget to be removedfalse if the widget is not presentpublic boolean remove(Widget w)
PanelHow to Override this Method
There are several important things that must take place in the correct order to properly remove a Widget from a Panel. Not all of these steps will be relevant to every Panel, but all of the steps must be considered.
false if it is not.Panel.orphan(Widget) first while the child
Widget is still attached.WidgetCollection.remove in interface HasWidgetsremove in class Panelw - the widget to be removedtrue if the child was presentprotected void add(Widget child, Element container)
child - the child widget to be addedcontainer - the element within which the child will be containedprotected int adjustIndex(Widget child, int beforeIndex)
child - the widget that might be an existing childbeforeIndex - the index at which it will be added to this panelprotected void checkIndexBoundsForAccess(int index)
index is in the range [0, getWidgetCount()), which
is the valid range on accessible indexes.index - the index being accessedprotected void checkIndexBoundsForInsertion(int index)
index is in the range [0, getWidgetCount()], which
is the valid range for indexes on an insertion.index - the index where insertion will occurprotected WidgetCollection getChildren()
@Deprecated protected void insert(Widget child, Element container, int beforeIndex)
insert(Widget, Element, int, boolean) insteadchild should
be appended to container element versus inserted into
container at beforeIndex. Use
insert(Widget, Element, int, boolean), which clarifies this
ambiguity.protected void insert(Widget child, Element container, int beforeIndex, boolean domInsert)
domInsert.child - the child Widget to be addedcontainer - the Element within which child will be
containedbeforeIndex - the index before which child will be
inserteddomInsert - if true, insert child into
container at beforeIndex; otherwise
append child to the end of container.void doLogicalClear()