AbstractHasData (GWT 2.7.0)

java.lang.Object
- com.google.gwt.user.client.ui.UIObject
- - com.google.gwt.user.client.ui.Widget
  - - com.google.gwt.user.client.ui.Composite
    - - com.google.gwt.user.cellview.client.AbstractHasData<T>

Type Parameters:
T - the data type of each row

All Implemented Interfaces:

HasAttachHandlers, HasHandlers, HasKeyboardPagingPolicy, HasKeyboardSelectionPolicy, EventListener, Focusable, HasVisibility, IsRenderable, IsWidget, HasCellPreviewHandlers<T>, HasData<T>, HasKeyProvider<T>, HasRows

Direct Known Subclasses:

AbstractCellTable, CellList
```
public abstract class AbstractHasData<T>
extends Composite
implements HasData<T>, HasKeyProvider<T>, Focusable, HasKeyboardPagingPolicy
```
An abstract Widget that implements HasData.

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

static class AbstractHasData.DefaultKeyboardSelectionHandler<T>
Default implementation of a keyboard navigation handler.
- Nested classes/interfaces inherited from class com.google.gwt.user.client.ui.UIObject
  UIObject.DebugIdImpl, UIObject.DebugIdImplEnabled
- Nested classes/interfaces inherited from interface com.google.gwt.user.cellview.client.HasKeyboardPagingPolicy
  HasKeyboardPagingPolicy.KeyboardPagingPolicy
- Nested classes/interfaces inherited from interface com.google.gwt.user.cellview.client.HasKeyboardSelectionPolicy
  HasKeyboardSelectionPolicy.KeyboardSelectionPolicy

Nested Classes
Modifier and Type	Class and Description
`static class`	`AbstractHasData.DefaultKeyboardSelectionHandler<T>` Default implementation of a keyboard navigation handler.

Field Summary
- Fields inherited from class com.google.gwt.user.client.ui.UIObject
  DEBUG_ID_PREFIX

Constructor Summary

Constructors
Constructor and Description
`AbstractHasData(Element elem, int pageSize, ProvidesKey<T> keyProvider)` Constructs an `AbstractHasData` with the given page size.
`AbstractHasData(Widget widget, int pageSize, ProvidesKey<T> keyProvider)` Constructs an `AbstractHasData` with the given page size.

Method Summary

Methods
Modifier and Type	Method and Description
`HandlerRegistration`	`addCellPreviewHandler(CellPreviewEvent.Handler<T> handler)` Adds a `CellPreviewEvent` handler.
`HandlerRegistration`	`addLoadingStateChangeHandler(LoadingStateChangeEvent.Handler handler)` Add a `LoadingStateChangeEvent.Handler` to be notified of changes in the loading state.
`HandlerRegistration`	`addRangeChangeHandler(RangeChangeEvent.Handler handler)` Add a `RangeChangeEvent.Handler`.
`HandlerRegistration`	`addRowCountChangeHandler(RowCountChangeEvent.Handler handler)` Add a `RowCountChangeEvent.Handler`.
`protected boolean`	`cellConsumesEventType(Cell<?> cell, String eventType)` Check if a cell consumes the specified event type.
`protected void`	`checkRowBounds(int row)` Check that the row is within the correct bounds.
`protected Element`	`convertToElements(SafeHtml html)` Convert the specified HTML into DOM elements and return the parent of the DOM elements.
`protected abstract boolean`	`dependsOnSelection()` Check whether or not the cells in the view depend on the selection state.
`char`	`getAccessKey()` Get the access key.
`protected abstract Element`	`getChildContainer()` Return the element that holds the rendered cells.
`protected Element`	`getChildElement(int index)` Get the element that represents the specified index.
`T`	`getDisplayedItem(int indexOnPage)` Deprecated. use `getVisibleItem(int)` instead
`List<T>`	`getDisplayedItems()` Deprecated. use `getVisibleItems()` instead
`HasKeyboardPagingPolicy.KeyboardPagingPolicy`	`getKeyboardPagingPolicy()` Get the `HasKeyboardPagingPolicy.KeyboardPagingPolicy`.
`protected abstract Element`	`getKeyboardSelectedElement()` Get the element that has keyboard selection.
`int`	`getKeyboardSelectedRow()` Get the index of the row that is currently selected via the keyboard, relative to the page start index.
`HasKeyboardSelectionPolicy.KeyboardSelectionPolicy`	`getKeyboardSelectionPolicy()` Get the `HasKeyboardSelectionPolicy.KeyboardSelectionPolicy`.
`ProvidesKey<T>`	`getKeyProvider()` Return the key provider.
`int`	`getPageSize()` Return the range size.
`int`	`getPageStart()` Return the range start.
`Element`	`getRowContainer()` Return the outer element that contains all of the rendered row values.
`int`	`getRowCount()` Get the total count of all rows.
`SelectionModel<? super T>`	`getSelectionModel()` Get the `SelectionModel` used by this `HasData`.
`int`	`getTabIndex()` Gets the widget's position in the tab index.
`Object`	`getValueKey(T value)` Get the key for the specified value.
`T`	`getVisibleItem(int indexOnPage)` Get the row value at the specified visible index.
`int`	`getVisibleItemCount()` Get the number of visible items being displayed.
`List<T>`	`getVisibleItems()` Return the row values that the widget is currently displaying as an immutable list.
`Range`	`getVisibleRange()` Get the range of visible rows.
`protected abstract boolean`	`isKeyboardNavigationSuppressed()` Check if keyboard navigation is being suppressed, such as when the user is editing a cell.
`boolean`	`isRowCountExact()` Check if the total row count is exact, or an estimate.
`protected boolean`	`isRowWithinBounds(int row)` Checks that the row is within bounds of the view.
`protected void`	`onBlur()` Called when the widget is blurred.
`void`	`onBrowserEvent(Event event)` Handle browser events.
`protected void`	`onBrowserEvent2(Event event)` Called after `onBrowserEvent(Event)` completes.
`protected void`	`onFocus()` Called when the widget is focused.
`protected void`	`onLoadingStateChanged(LoadingStateChangeEvent.LoadingState state)` Called when the loading state changes.
`protected void`	`onUnload()` This method is called immediately before a widget will be detached from the browser's document.
`void`	`redraw()` Redraw the widget using the existing data.
`void`	`redrawRow(int absRowIndex)` Redraw a single row using the existing data.
`protected abstract void`	`renderRowValues(SafeHtmlBuilder sb, List<T> values, int start, SelectionModel<? super T> selectionModel)` Render all row values into the specified `SafeHtmlBuilder`.
`protected void`	`replaceAllChildren(List<T> values, SafeHtml html)` Replace all children with the specified html.
`protected void`	`replaceChildren(List<T> values, int start, SafeHtml html)` Convert the specified HTML into DOM elements and replace the existing elements starting at the specified index.
`protected abstract boolean`	`resetFocusOnCell()` Reset focus on the currently focused cell.
`void`	`setAccessKey(char key)` Sets the widget's 'access key'.
`void`	`setFocus(boolean focused)` Explicitly focus/unfocus this widget.
`protected void`	`setFocusable(Element elem, boolean focusable)` Make an element focusable or not.
`void`	`setKeyboardPagingPolicy(HasKeyboardPagingPolicy.KeyboardPagingPolicy policy)` Set the `HasKeyboardPagingPolicy.KeyboardPagingPolicy`.
`protected abstract void`	`setKeyboardSelected(int index, boolean selected, boolean stealFocus)` Update an element to reflect its keyboard selected state.
`void`	`setKeyboardSelectedRow(int row)` Set the keyboard selected row.
`void`	`setKeyboardSelectedRow(int row, boolean stealFocus)` Set the keyboard selected row and optionally focus on the new row.
`void`	`setKeyboardSelectionHandler(CellPreviewEvent.Handler<T> keyboardSelectionReg)` Set the handler that handles keyboard selection/navigation.
`void`	`setKeyboardSelectionPolicy(HasKeyboardSelectionPolicy.KeyboardSelectionPolicy policy)` Set the `HasKeyboardSelectionPolicy.KeyboardSelectionPolicy`.
`void`	`setPageSize(int pageSize)` Set the number of rows per page and refresh the view.
`void`	`setPageStart(int pageStart)` Set the starting index of the current visible page.
`void`	`setRowCount(int count)` Set the exact total count of all rows.
`void`	`setRowCount(int size, boolean isExact)` Set the total count of all rows, specifying whether the count is exact or an estimate.
`void`	`setRowData(int start, List<? extends T> values)` Set a values associated with the rows in the visible range.
`void`	`setRowData(List<? extends T> values)` Set the complete list of values to display on one page.
`protected void`	`setSelected(Element elem, boolean selected)` Deprecated. this method is never called by AbstractHasData, render the selected styles in `renderRowValues(SafeHtmlBuilder, List, int, SelectionModel)`
`void`	`setSelectionModel(SelectionModel<? super T> selectionModel)` Set the `SelectionModel` used by this `HasData`.
`void`	`setSelectionModel(SelectionModel<? super T> selectionModel, CellPreviewEvent.Handler<T> selectionEventManager)` Set the `SelectionModel` that defines which items are selected and the `CellPreviewEvent.Handler` that controls how user selection is handled.
`void`	`setTabIndex(int index)` Sets the widget's position in the tab index.
`void`	`setVisibleRange(int start, int length)` Set the visible range or rows.
`void`	`setVisibleRange(Range range)` Set the visible range or rows.
`void`	`setVisibleRangeAndClearData(Range range, boolean forceRangeChangeEvent)` Set the visible range and clear the current visible data.

Methods inherited from class com.google.gwt.user.client.ui.Composite
claimElement, getWidget, initializeClaimedElement, initWidget, isAttached, onAttach, onDetach, render, render, resolvePotentialElement, setWidget

Methods inherited from class com.google.gwt.user.client.ui.Widget
addAttachHandler, addBitlessDomHandler, addDomHandler, addHandler, asWidget, asWidgetOrNull, createHandlerManager, delegateEvent, doAttachChildren, doDetachChildren, fireEvent, getHandlerCount, getLayoutData, getParent, isOrWasAttached, onLoad, removeFromParent, setLayoutData, sinkEvents, unsinkEvents

Methods inherited from class com.google.gwt.user.client.ui.UIObject
addStyleDependentName, addStyleName, ensureDebugId, ensureDebugId, ensureDebugId, getAbsoluteLeft, getAbsoluteTop, getElement, getOffsetHeight, getOffsetWidth, getStyleElement, getStyleName, getStyleName, getStylePrimaryName, getStylePrimaryName, getTitle, isVisible, isVisible, onEnsureDebugId, removeStyleDependentName, removeStyleName, setElement, setElement, setHeight, setPixelSize, setSize, setStyleDependentName, setStyleName, setStyleName, setStyleName, setStyleName, setStylePrimaryName, setStylePrimaryName, setTitle, setVisible, setVisible, setWidth, sinkBitlessEvent, toString

Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode

Methods inherited from interface com.google.gwt.event.shared.HasHandlers
fireEvent

- Constructor Detail
  - AbstractHasData
```
public AbstractHasData(Element elem,
               int pageSize,
               ProvidesKey<T> keyProvider)
```
    Constructs an AbstractHasData with the given page size.
    
    Parameters:
    elem - the parent Element
    pageSize - the page size
    keyProvider - the key provider, or null
  - AbstractHasData
```
public AbstractHasData(Widget widget,
               int pageSize,
               ProvidesKey<T> keyProvider)
```
    Constructs an AbstractHasData with the given page size.
    
    Parameters:
    widget - the parent Widget
    pageSize - the page size
    keyProvider - the key provider, or null
- Method Detail
  - addCellPreviewHandler
```
public HandlerRegistration addCellPreviewHandler(CellPreviewEvent.Handler<T> handler)
```
    Description copied from interface: HasCellPreviewHandlers
    
    Adds a CellPreviewEvent handler.
    
    Specified by:
    
    addCellPreviewHandler in interface HasCellPreviewHandlers<T>
    
    Parameters:
    handler - the handler
    
    Returns:
    the registration for the event
  - addLoadingStateChangeHandler
```
public HandlerRegistration addLoadingStateChangeHandler(LoadingStateChangeEvent.Handler handler)
```
    Add a LoadingStateChangeEvent.Handler to be notified of changes in the loading state.
    
    Parameters:
    handler - the handle
    
    Returns:
    the registration for the handler
  - addRangeChangeHandler
```
public HandlerRegistration addRangeChangeHandler(RangeChangeEvent.Handler handler)
```
    Description copied from interface: HasRows
    
    Add a RangeChangeEvent.Handler.
    
    Specified by:
    
    addRangeChangeHandler in interface HasRows
    
    Parameters:
    handler - the handler
    
    Returns:
    a HandlerRegistration to remove the handler
  - addRowCountChangeHandler
```
public HandlerRegistration addRowCountChangeHandler(RowCountChangeEvent.Handler handler)
```
    Description copied from interface: HasRows
    
    Add a RowCountChangeEvent.Handler.
    
    Specified by:
    
    addRowCountChangeHandler in interface HasRows
    
    Parameters:
    handler - the handler
    
    Returns:
    a HandlerRegistration to remove the handler
  - getAccessKey
```
public char getAccessKey()
```
    Get the access key.
    
    Returns:
    the access key, or -1 if not set
    See Also:
    setAccessKey(char)
  - getDisplayedItem
```
@Deprecated
public T getDisplayedItem(int indexOnPage)
```
    Deprecated. use getVisibleItem(int) instead
    
    Get the row value at the specified visible index. Index 0 corresponds to the first item on the page.
    
    Parameters:
    indexOnPage - the index on the page
    
    Returns:
    the row value
  - getDisplayedItems
```
@Deprecated
public List<T> getDisplayedItems()
```
    Deprecated. use getVisibleItems() instead
    
    Return the row values that the widget is currently displaying as an immutable list.
    
    Returns:
    a List of displayed items
  - getKeyboardPagingPolicy
```
public HasKeyboardPagingPolicy.KeyboardPagingPolicy getKeyboardPagingPolicy()
```
    Description copied from interface: HasKeyboardPagingPolicy
    
    Get the HasKeyboardPagingPolicy.KeyboardPagingPolicy.
    
    Specified by:
    
    getKeyboardPagingPolicy in interface HasKeyboardPagingPolicy
    
    Returns:
    the paging policy
    See Also:
    HasKeyboardPagingPolicy.setKeyboardPagingPolicy(KeyboardPagingPolicy)
  - getKeyboardSelectedRow
```
public int getKeyboardSelectedRow()
```
    Get the index of the row that is currently selected via the keyboard, relative to the page start index.
    This is not same as the selected row in the SelectionModel. The keyboard selected row refers to the row that the user navigated to via the keyboard or mouse.
    
    Returns:
    the currently selected row, or -1 if none selected
  - getKeyboardSelectionPolicy
```
public HasKeyboardSelectionPolicy.KeyboardSelectionPolicy getKeyboardSelectionPolicy()
```
    Description copied from interface: HasKeyboardSelectionPolicy
    
    Get the HasKeyboardSelectionPolicy.KeyboardSelectionPolicy.
    
    Specified by:
    
    getKeyboardSelectionPolicy in interface HasKeyboardSelectionPolicy
    
    Returns:
    the selection policy
    See Also:
    HasKeyboardSelectionPolicy.setKeyboardSelectionPolicy(KeyboardSelectionPolicy)
  - getKeyProvider
```
public ProvidesKey<T> getKeyProvider()
```
    Description copied from interface: HasKeyProvider
    
    Return the key provider.
    
    Specified by:
    
    getKeyProvider in interface HasKeyProvider<T>
    
    Returns:
    the ProvidesKey instance
  - getPageSize
```
public final int getPageSize()
```
    Return the range size.
    
    Returns:
    the size of the range as an int
    See Also:
    getVisibleRange(), setPageSize(int)
  - getPageStart
```
public final int getPageStart()
```
    Return the range start.
    
    Returns:
    the start of the range as an int
    See Also:
    getVisibleRange(), setPageStart(int)
  - getRowContainer
```
public Element getRowContainer()
```
    Return the outer element that contains all of the rendered row values. This method delegates to getChildContainer();
    
    Returns:
    the Element that contains the rendered row values
  - getRowCount
```
public int getRowCount()
```
    Description copied from interface: HasRows
    
    Get the total count of all rows.
    
    Specified by:
    
    getRowCount in interface HasRows
    
    Returns:
    the total row count
    See Also:
    HasRows.setRowCount(int)
  - getSelectionModel
```
public SelectionModel<? super T> getSelectionModel()
```
    Description copied from interface: HasData
    
    Get the SelectionModel used by this HasData.
    
    Specified by:
    
    getSelectionModel in interface HasData<T>
    
    Returns:
    the SelectionModel
    See Also:
    HasData.setSelectionModel(SelectionModel)
  - getTabIndex
```
public int getTabIndex()
```
    Description copied from interface: Focusable
    
    Gets the widget's position in the tab index.
    
    Specified by:
    
    getTabIndex in interface Focusable
    
    Returns:
    the widget's tab index
  - getValueKey
```
public Object getValueKey(T value)
```
    Get the key for the specified value. If a keyProvider is not specified or the value is null, the value is returned. If the key provider is specified, it is used to get the key from the value.
    
    Parameters:
    value - the value
    
    Returns:
    the key
  - getVisibleItem
```
public T getVisibleItem(int indexOnPage)
```
    Description copied from interface: HasData
    
    Get the row value at the specified visible index. Index 0 corresponds to the first item on the page.
    
    Specified by:
    
    getVisibleItem in interface HasData<T>
    
    Parameters:
    indexOnPage - the index on the page
    
    Returns:
    the row value
  - getVisibleItemCount
```
public int getVisibleItemCount()
```
    Description copied from interface: HasData
    
    Get the number of visible items being displayed. Note that this value might be less than the page size if there is not enough data to fill the page.
    
    Specified by:
    
    getVisibleItemCount in interface HasData<T>
    
    Returns:
    the number of visible items on the page
  - getVisibleItems
```
public List<T> getVisibleItems()
```
    Return the row values that the widget is currently displaying as an immutable list.
    
    Specified by:
    
    getVisibleItems in interface HasData<T>
    
    Returns:
    a List of displayed items
  - getVisibleRange
```
public Range getVisibleRange()
```
    Description copied from interface: HasRows
    
    Get the range of visible rows.
    
    Specified by:
    
    getVisibleRange in interface HasRows
    
    Returns:
    the visible range
    See Also:
    HasRows.setVisibleRange(Range), HasRows.setVisibleRange(int, int)
  - isRowCountExact
```
public boolean isRowCountExact()
```
    Description copied from interface: HasRows
    
    Check if the total row count is exact, or an estimate.
    
    Specified by:
    
    isRowCountExact in interface HasRows
    
    Returns:
    true if exact, false if an estimate
  - onBrowserEvent
```
public final void onBrowserEvent(Event event)
```
    Handle browser events. Subclasses should override onBrowserEvent2(Event) if they want to extend browser event handling.
    
    Specified by:
    
    onBrowserEvent in interface EventListener
    
    Overrides:
    
    onBrowserEvent in class Composite
    
    Parameters:
    event - the event received
    See Also:
    onBrowserEvent2(Event)
  - redraw
```
public void redraw()
```
    Redraw the widget using the existing data.
  - redrawRow
```
public void redrawRow(int absRowIndex)
```
    Redraw a single row using the existing data.
    
    Parameters:
    absRowIndex - the absolute row index to redraw
  - setAccessKey
```
public void setAccessKey(char key)
```
    Sets the widget's 'access key'. This key is used (in conjunction with a browser-specific modifier key) to automatically focus the widget.
    
    Specified by:
    
    setAccessKey in interface Focusable
    
    Parameters:
    key - the widget's access key
    See Also:
    getAccessKey()
  - setFocus
```
public void setFocus(boolean focused)
```
    Description copied from interface: Focusable
    
    Explicitly focus/unfocus this widget. Only one widget can have focus at a time, and the widget that does will receive all keyboard events.
    
    Specified by:
    
    setFocus in interface Focusable
    
    Parameters:
    focused - whether this widget should take focus or release it
  - setKeyboardPagingPolicy
```
public void setKeyboardPagingPolicy(HasKeyboardPagingPolicy.KeyboardPagingPolicy policy)
```
    Description copied from interface: HasKeyboardPagingPolicy
    
    Set the HasKeyboardPagingPolicy.KeyboardPagingPolicy.
    
    Specified by:
    
    setKeyboardPagingPolicy in interface HasKeyboardPagingPolicy
    
    Parameters:
    policy - the paging policy
    See Also:
    HasKeyboardPagingPolicy.getKeyboardPagingPolicy()
  - setKeyboardSelectedRow
```
public final void setKeyboardSelectedRow(int row)
```
    Set the keyboard selected row. The row index is the index relative to the current page start index.
    If keyboard selection is disabled, this method does nothing.
    
    If the keyboard selected row is outside of the range of the current page (that is, less than 0 or greater than or equal to the page size), the page or range will be adjusted depending on the keyboard paging policy. If the keyboard paging policy is limited to the current range, the row index will be clipped to the current page.
    
    Parameters:
    row - the row index relative to the page start
  - setKeyboardSelectedRow
```
public void setKeyboardSelectedRow(int row,
                          boolean stealFocus)
```
    Set the keyboard selected row and optionally focus on the new row.
    
    Parameters:
    row - the row index relative to the page start
    stealFocus - true to focus on the new row
    See Also:
    setKeyboardSelectedRow(int)
  - setKeyboardSelectionHandler
```
public void setKeyboardSelectionHandler(CellPreviewEvent.Handler<T> keyboardSelectionReg)
```
    Set the handler that handles keyboard selection/navigation.
  - setKeyboardSelectionPolicy
```
public void setKeyboardSelectionPolicy(HasKeyboardSelectionPolicy.KeyboardSelectionPolicy policy)
```
    Description copied from interface: HasKeyboardSelectionPolicy
    
    Set the HasKeyboardSelectionPolicy.KeyboardSelectionPolicy.
    
    Specified by:
    
    setKeyboardSelectionPolicy in interface HasKeyboardSelectionPolicy
    
    Parameters:
    policy - the selection policy
    See Also:
    HasKeyboardSelectionPolicy.getKeyboardSelectionPolicy()
  - setPageSize
```
public final void setPageSize(int pageSize)
```
    Set the number of rows per page and refresh the view.
    
    Parameters:
    pageSize - the page size
    See Also:
    setVisibleRange(Range), getPageSize()
  - setPageStart
```
public final void setPageStart(int pageStart)
```
    Set the starting index of the current visible page. The actual page start will be clamped in the range [0, getSize() - 1].
    
    Parameters:
    pageStart - the index of the row that should appear at the start of the page
    See Also:
    setVisibleRange(Range), getPageStart()
  - setRowCount
```
public final void setRowCount(int count)
```
    Description copied from interface: HasRows
    
    Set the exact total count of all rows. This method defers to HasRows.setRowCount(int, boolean).
    
    Specified by:
    
    setRowCount in interface HasRows
    
    Parameters:
    count - the exact total count
    See Also:
    HasRows.getRowCount()
  - setRowCount
```
public void setRowCount(int size,
               boolean isExact)
```
    Description copied from interface: HasRows
    
    Set the total count of all rows, specifying whether the count is exact or an estimate.
    
    Specified by:
    
    setRowCount in interface HasRows
    
    Parameters:
    size - the total count
    isExact - true if the count is exact, false if an estimate
    See Also:
    HasRows.getRowCount()
  - setRowData
```
public final void setRowData(List<? extends T> values)
```
    Set the complete list of values to display on one page.
    
    Equivalent to calling setRowCount(int) with the length of the list of values, setVisibleRange(Range) from 0 to the size of the list of values, and setRowData(int, List) with a start of 0 and the specified list of values.
    
    Parameters:
    values -
  - setRowData
```
public void setRowData(int start,
              List<? extends T> values)
```
    Description copied from interface: HasData
    
    Set a values associated with the rows in the visible range.
    
    This method does not replace all rows in the display; it replaces the row values starting at the specified start index through the length of the specified values. You must call HasRows.setRowCount(int) to set the total number of rows in the display. You should also use HasRows.setRowCount(int) to remove rows when the total number of rows decreases.
    
    Specified by:
    
    setRowData in interface HasData<T>
    
    Parameters:
    start - the start index of the data
    values - the values within the range
  - setSelectionModel
```
public void setSelectionModel(SelectionModel<? super T> selectionModel)
```
    Set the SelectionModel used by this HasData.
    By default, selection occurs when the user clicks on a Cell or presses the spacebar. If you need finer control over selection, you can specify a DefaultSelectionEventManager using setSelectionModel(SelectionModel, com.google.gwt.view.client.CellPreviewEvent.Handler). DefaultSelectionEventManager provides some default implementations to handle checkbox based selection, as well as a blacklist or whitelist of columns to prevent or allow selection.
    
    Specified by:
    
    setSelectionModel in interface HasData<T>
    
    Parameters:
    selectionModel - the SelectionModel
    See Also:
    setSelectionModel(SelectionModel, com.google.gwt.view.client.CellPreviewEvent.Handler), getSelectionModel()
  - setSelectionModel
```
public void setSelectionModel(SelectionModel<? super T> selectionModel,
                     CellPreviewEvent.Handler<T> selectionEventManager)
```
    Set the SelectionModel that defines which items are selected and the CellPreviewEvent.Handler that controls how user selection is handled.
    
    Parameters:
    selectionModel - the SelectionModel that defines selection
    selectionEventManager - the handler that controls user selection
  - setTabIndex
```
public void setTabIndex(int index)
```
    Description copied from interface: Focusable
    
    Sets the widget's position in the tab index. If more than one widget has the same tab index, each such widget will receive focus in an arbitrary order. Setting the tab index to -1 will cause this widget to be removed from the tab order.
    
    Specified by:
    
    setTabIndex in interface Focusable
    
    Parameters:
    index - the widget's tab index
  - setVisibleRange
```
public final void setVisibleRange(int start,
                   int length)
```
    Description copied from interface: HasRows
    
    Set the visible range or rows. This method defers to HasRows.setVisibleRange(Range).
    
    Specified by:
    
    setVisibleRange in interface HasRows
    
    Parameters:
    start - the start index
    length - the length
    See Also:
    HasRows.getVisibleRange()
  - setVisibleRange
```
public void setVisibleRange(Range range)
```
    Description copied from interface: HasRows
    
    Set the visible range or rows.
    
    Specified by:
    
    setVisibleRange in interface HasRows
    
    Parameters:
    range - the visible range
    See Also:
    HasRows.getVisibleRange()
  - setVisibleRangeAndClearData
```
public void setVisibleRangeAndClearData(Range range,
                               boolean forceRangeChangeEvent)
```
    Description copied from interface: HasData
    
    Set the visible range and clear the current visible data.
    
    If the second argument forceRangeChangeEvent is true, a RangeChangeEvent will be fired even if the range does not change. If false, a RangeChangeEvent will only be fired if the range changes.
    
    Specified by:
    
    setVisibleRangeAndClearData in interface HasData<T>
    
    Parameters:
    range - the new Range
    forceRangeChangeEvent - true to fire a RangeChangeEvent even if the Range doesn't change
  - cellConsumesEventType
```
protected boolean cellConsumesEventType(Cell<?> cell,
                            String eventType)
```
    Check if a cell consumes the specified event type.
    
    Parameters:
    cell - the cell
    eventType - the event type to check
    
    Returns:
    true if consumed, false if not
  - checkRowBounds
```
protected void checkRowBounds(int row)
```
    Check that the row is within the correct bounds.
    
    Parameters:
    row - row index to check
    
    Throws:
    
    IndexOutOfBoundsException
  - convertToElements
```
protected Element convertToElements(SafeHtml html)
```
    Convert the specified HTML into DOM elements and return the parent of the DOM elements.
    
    Parameters:
    html - the HTML to convert
    
    Returns:
    the parent element
  - dependsOnSelection
```
protected abstract boolean dependsOnSelection()
```
    Check whether or not the cells in the view depend on the selection state.
    
    Returns:
    true if cells depend on selection, false if not
  - getChildContainer
```
protected abstract Element getChildContainer()
```
    Return the element that holds the rendered cells.
    
    Returns:
    the container Element
  - getChildElement
```
protected Element getChildElement(int index)
```
    Get the element that represents the specified index.
    
    Parameters:
    index - the index of the row value
    
    Returns:
    the child element, or null if it does not exist
  - getKeyboardSelectedElement
```
protected abstract Element getKeyboardSelectedElement()
```
    Get the element that has keyboard selection.
    
    Returns:
    the keyboard selected element
  - isKeyboardNavigationSuppressed
```
protected abstract boolean isKeyboardNavigationSuppressed()
```
    Check if keyboard navigation is being suppressed, such as when the user is editing a cell.
    
    Returns:
    true if suppressed, false if not
  - isRowWithinBounds
```
protected boolean isRowWithinBounds(int row)
```
    Checks that the row is within bounds of the view.
    
    Parameters:
    row - row index to check
    
    Returns:
    true if within bounds, false if not
  - onBlur
```
protected void onBlur()
```
    Called when the widget is blurred.
  - onBrowserEvent2
```
protected void onBrowserEvent2(Event event)
```
    Called after onBrowserEvent(Event) completes.
    
    Parameters:
    event - the event that was fired
  - onFocus
```
protected void onFocus()
```
    Called when the widget is focused.
  - onLoadingStateChanged
```
protected void onLoadingStateChanged(LoadingStateChangeEvent.LoadingState state)
```
    Called when the loading state changes. By default, this implementation fires a LoadingStateChangeEvent.
    
    Parameters:
    state - the new loading state
  - onUnload
```
protected void onUnload()
```
    Description copied from class: Widget
    
    This method is called immediately before a widget will be detached from the browser's document.
    
    Overrides:
    
    onUnload in class Widget
  - renderRowValues
```
protected abstract void renderRowValues(SafeHtmlBuilder sb,
                   List<T> values,
                   int start,
                   SelectionModel<? super T> selectionModel)
                                 throws UnsupportedOperationException
```
    Render all row values into the specified SafeHtmlBuilder.
    Subclasses can optionally throw an UnsupportedOperationException if they prefer to render the rows in replaceAllChildren(List, SafeHtml) and replaceChildren(List, int, SafeHtml). In this case, the SafeHtml argument will be null. Though a bit hacky, this is designed to supported legacy widgets that use SafeHtmlBuilder, and newer widgets that use other builders, such as the ElementBuilder API.
    
    Parameters:
    sb - the SafeHtmlBuilder to render into
    values - the row values
    start - the absolute start index of the values
    selectionModel - the SelectionModel
    
    Throws:
    
    UnsupportedOperationException - if the values will be rendered in replaceAllChildren(List, SafeHtml) and replaceChildren(List, int, SafeHtml)
  - replaceAllChildren
```
protected void replaceAllChildren(List<T> values,
                      SafeHtml html)
```
    Replace all children with the specified html.
    
    Parameters:
    values - the values of the new children
    html - the html to render, or null if renderRowValues(SafeHtmlBuilder, List, int, SelectionModel) throws an UnsupportedOperationException
  - replaceChildren
```
protected void replaceChildren(List<T> values,
                   int start,
                   SafeHtml html)
```
    Convert the specified HTML into DOM elements and replace the existing elements starting at the specified index. If the number of children specified exceeds the existing number of children, the remaining children should be appended.
    
    Parameters:
    values - the values of the new children
    start - the start index to be replaced, relative to the page start
    html - the html to render, or null if renderRowValues(SafeHtmlBuilder, List, int, SelectionModel) throws an UnsupportedOperationException
  - resetFocusOnCell
```
protected abstract boolean resetFocusOnCell()
```
    Reset focus on the currently focused cell.
    
    Returns:
    true if focus is taken, false if not
  - setFocusable
```
protected void setFocusable(Element elem,
                boolean focusable)
```
    Make an element focusable or not.
    
    Parameters:
    elem - the element
    focusable - true to make focusable, false to make unfocusable
  - setKeyboardSelected
```
protected abstract void setKeyboardSelected(int index,
                       boolean selected,
                       boolean stealFocus)
```
    Update an element to reflect its keyboard selected state.
    
    Parameters:
    index - the index of the element
    selected - true if selected, false if not
    stealFocus - true if the row should steal focus, false if not
  - setSelected
```
@Deprecated
protected void setSelected(Element elem,
                          boolean selected)
```
    Deprecated. this method is never called by AbstractHasData, render the selected styles in renderRowValues(SafeHtmlBuilder, List, int, SelectionModel)
    
    Update an element to reflect its selected state.
    
    Parameters:
    elem - the element to update
    selected - true if selected, false if not

Class AbstractHasData<T>

Nested Class Summary

Nested classes/interfaces inherited from class com.google.gwt.user.client.ui.UIObject

Nested classes/interfaces inherited from interface com.google.gwt.user.cellview.client.HasKeyboardPagingPolicy

Nested classes/interfaces inherited from interface com.google.gwt.user.cellview.client.HasKeyboardSelectionPolicy

Field Summary

Fields inherited from class com.google.gwt.user.client.ui.UIObject

Constructor Summary

Method Summary

Methods inherited from class com.google.gwt.user.client.ui.Composite

Methods inherited from class com.google.gwt.user.client.ui.Widget

Methods inherited from class com.google.gwt.user.client.ui.UIObject

Methods inherited from class java.lang.Object

Methods inherited from interface com.google.gwt.event.shared.HasHandlers

Constructor Detail

AbstractHasData

AbstractHasData

Method Detail

addCellPreviewHandler

addLoadingStateChangeHandler

addRangeChangeHandler

addRowCountChangeHandler

getAccessKey

getDisplayedItem

getDisplayedItems

getKeyboardPagingPolicy

getKeyboardSelectedRow

getKeyboardSelectionPolicy

getKeyProvider

getPageSize

getPageStart

getRowContainer

getRowCount

getSelectionModel

getTabIndex

getValueKey

getVisibleItem

getVisibleItemCount

getVisibleItems

getVisibleRange

isRowCountExact

onBrowserEvent

redraw

redrawRow

setAccessKey

setFocus

setKeyboardPagingPolicy

setKeyboardSelectedRow

setKeyboardSelectedRow

setKeyboardSelectionHandler

setKeyboardSelectionPolicy

setPageSize

setPageStart

setRowCount

setRowCount

setRowData

setRowData

setSelectionModel

setSelectionModel

setTabIndex

setVisibleRange

setVisibleRange

setVisibleRangeAndClearData

cellConsumesEventType

checkRowBounds

convertToElements

dependsOnSelection

getChildContainer

getChildElement

getKeyboardSelectedElement

isKeyboardNavigationSuppressed

isRowWithinBounds

onBlur

onBrowserEvent2

onFocus

onLoadingStateChanged

onUnload

renderRowValues

replaceAllChildren

replaceChildren