Class StackPanel

public class StackPanel
extends ComplexPanel
implements IndexedPanel
A panel that stacks its children vertically, displaying only one at a time, with a header for each that the user can click to display it.

CSS Style Rules

*

Example

public class StackPanelExample implements EntryPoint {

  public void onModuleLoad() {
    // Create a stack panel containing three labels.
    StackPanel panel = new StackPanel();
    panel.add(new Label("Foo"), "foo");
    panel.add(new Label("Bar"), "bar");
    panel.add(new Label("Baz"), "baz");

    // Add it to the root panel.
    RootPanel.get().add(panel);
  }
}

Constructors

StackPanel()Creates an empty stack panel.

Methods

add(Widget)Adds a widget to the stack.
add(Widget, String)Adds a widget to the panel, along with its header.
add(Widget, String, boolean)Adds a widget to the panel, along with its header, optionally interpreting the header as HTML.
getWidget(int)Gets the child widget at the specified index.
getWidgetCount()Gets the number of child widgets in this panel.
getWidgetIndex(Widget)Gets the index of the specified child widget.
onBrowserEvent(Event)
remove(int)Removes the widget at the specified index.
remove(Widget)
setStackText(int, String)Sets the text associated with a widget, by its index.
setStackText(int, String, boolean)Sets the text associated with a widget, by its index.
showStack(int)Shows the widget at the specified index.

Constructor Detail

StackPanel

public StackPanel()
Creates an empty stack panel.

Method Detail

add

public void add(Widget w)
Adds a widget to the stack.

Parameters

w
the widget to be added

add

public void add(Widget w, String stackText)
Adds a widget to the panel, along with its header.

Parameters

w
the widget to be added
stackText
the header text associated with this widget

add

public void add(Widget w, String stackText, boolean asHTML)
Adds a widget to the panel, along with its header, optionally interpreting the header as HTML.

Parameters

w
the widget to be added
stackText
the header text associated with this widget
asHTML
true to treat the specified text as HTML

getWidget

public Widget getWidget(int index)
Gets the child widget at the specified index.

Parameters

index
the child widget's index

Return Value

the child widget

getWidgetCount

public int getWidgetCount()
Gets the number of child widgets in this panel.

Return Value

the number of children

getWidgetIndex

public int getWidgetIndex(Widget child)
Gets the index of the specified child widget.

Parameters

child
the widget to be found

Return Value

the widget's index, or -1 if it is not a child of this panel

onBrowserEvent

public void onBrowserEvent(Event event)

Parameters

event

remove

public boolean remove(int index)
Removes the widget at the specified index.

Parameters

index
the index of the widget to be removed

Return Value

false if the widget is not present

remove

public boolean remove(Widget w)

Parameters

w

setStackText

public void setStackText(int index, String text)
Sets the text associated with a widget, by its index.

Parameters

index
the index of the widget whose text is to be set
text
the text to be associated with it

setStackText

public void setStackText(int index, String text, boolean asHTML)
Sets the text associated with a widget, by its index.

Parameters

index
the index of the widget whose text is to be set
text
the text to be associated with it
asHTML
true to treat the specified text as HTML

showStack

public void showStack(int index)
Shows the widget at the specified index.

Parameters

index
the widget index to be shown