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GWT DockLayoutPanel

In this layout panel, all its child widgets lays at corner or edges. The last widget occupies the center space. It works also in standard mode where HTML page is having !DOCTYPE DECLARATION.

GWT DockLayoutPanel Class Declaration

Let’s see the declaration of com.google.gwt.user.client.ui.DockLayoutPanel

DockLayoutPanel Nested Classes

Class	Description
DockLayoutPanel.Direction	It is used in addEast(Widget, double) et al to specify the direction in which a child widget will be added.
DockLayoutPanel.LayoutData	Its layout data is associated with each widget.

GWT DockLayoutPanel Constructors

Constructor	Description
DockLayoutPanel(Style.Unit unit)	It creates an empty dock panel.

DockLayoutPanel Common Methods

Modifier and Types	Method	Description
void	add(Widget widget)	It adds a widget at the center of the dock.
void	addEast(IsWidget widget, double size)	It is a overloaded version for IsWidget.
void	addEast(Widget widget, double size)	It adds a widget to the east edge of the dock.
void	addLineEnd(Widget widget, double size)	It adds a widget to the end of the line.
void	addNorth(Widget widget, double size)	It adds a widget to the north edge of the dock.
void	addSouth(Widget widget, double size)	It adds a widget to the south edge of the dock.
Element	getWidgetContainerElement(Widget child)	It gets the container element wrapping the given child widget.
protected DockLayoutPanel.Direction	getResolvedDirection(DockLayoutPanel.Direction direction)	It resolves the specified direction based on the current locale.
protected void	insert(Widget widget, DockLayoutPanel.Direction direction, double size, Widget before)	It adds a widget to the specified edge of the dock.
protected void	onAttach()	It is called when a widget is attached to the browser’s document.
protected void	onDetach()	It is called when a widget is detached from the browser’s document.
void	setWidgetHidden(Widget widget, boolean hidden)	It sets whether or not the given widget should be hidden.
void	setWidgetSize(Widget widget, double size)	It updates the size of the widget passed in as long as it is not the center widget and updates the layout of the dock.

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GWT DockLayoutPanel Example 1

//SampleDockLayoutPanel.java

//SampleDockLayoutPanel.css

Output:

GWT DockLayoutPanel Example 2

//SampleDockLayoutPanel.java

Output: