com.sencha.gxt.widget.core.client.container

Class PortalLayoutContainer

java.lang.Object

com.google.gwt.user.client.ui.UIObject

com.google.gwt.user.client.ui.Widget

com.sencha.gxt.widget.core.client.Component

com.sencha.gxt.widget.core.client.Composite

com.sencha.gxt.widget.core.client.container.PortalLayoutContainer

All Implemented Interfaces:

HasAttachHandlers, HasResizeHandlers, HasHandlers, EventListener, HasEnabled, HasVisibility, IsWidget, BeforeHideEvent.HasBeforeHideHandlers, BeforeShowContextMenuEvent.HasBeforeShowContextMenuHandler, BeforeShowEvent.HasBeforeShowHandlers, BlurEvent.HasBlurHandlers, DisableEvent.HasDisableHandlers, EnableEvent.HasEnableHandlers, FocusEvent.HasFocusHandlers, HideEvent.HasHideHandlers, MoveEvent.HasMoveHandlers, PortalDropEvent.HasPortalDropHandlers, PortalValidateDropEvent.HasPortalValidateDropHandlers, ShowContextMenuEvent.HasShowContextMenuHandler, ShowEvent.HasShowHandlers, HasFocusSupport, HasItemId

public class PortalLayoutContainer
extends Composite
implements PortalValidateDropEvent.HasPortalValidateDropHandlers, PortalDropEvent.HasPortalDropHandlers

A layout container that lays out its children in in multiple columns, each containing zero or more Portlets. Supports drag and drop of child Portlets between columns as well as modifying the order within columns.

PortalLayoutContainer is not a container itself, but a Composite that wraps an internal container.

PortalLayoutContainer internally creates a CssFloatLayoutContainer for each column. The add, insert, remove methods work against these internal containers, getWidget(int) returns the internal containers. The portlets are children of the internal containers, not the portlet container itself.

Code Snippet:

  public void onModuleLoad() {
    PortalLayoutContainer c = new PortalLayoutContainer(3);
    c.add(createPortlet("Portlet 1", "Content 1"), 0);
    c.add(createPortlet("Portlet 2", "Content 2"), 1);
    c.add(createPortlet("Portlet 3", "Content 3"), 2);
    Viewport v = new Viewport();
    v.add(c);
    RootPanel.get().add(v);
  }

  private Portlet createPortlet(String h, String l) {
    Portlet p = new Portlet();
    p.setHeadingText(h);
    p.setWidget(new Label(l));
    p.setPixelSize(200, 200);
    return p;
  }
 

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	PortalLayoutContainer.PortalLayoutAppearance

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

UIObject.DebugIdImpl, UIObject.DebugIdImplEnabled

Field Summary

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

DEBUG_ID_PREFIX

Constructor Summary

Constructors

Constructor and Description
PortalLayoutContainer(int numColumns) Creates a portal layout container with the default appearance and the specified number of columns.
PortalLayoutContainer(PortalLayoutContainer.PortalLayoutAppearance appearance, int numColumns) Creates a portal layout container with the specified appearance and number of columns.

Method Summary

Methods

Modifier and Type	Method and Description
void	add(IsWidget w, int column) Adds a portlet to the portal.
void	add(Portlet portlet, int column) Adds a portlet to the portal.
HandlerRegistration	addDropHandler(PortalDropEvent.PortalDropHandler handler) Adds a PortalDropEvent.PortalDropHandler handler for PortalDropEvent events.
HandlerRegistration	addValidateDropHandler(PortalValidateDropEvent.PortalValidateDropHandler handler) Adds a PortalValidateDropEvent.PortalValidateDropHandler handler for PortalValidateDropEvent events.
void	clear() Removes all portlets from all columns.
PortalLayoutContainer.PortalLayoutAppearance	getAppearance()
AutoScrollSupport	getAutoScrollSupport() Returns the scroll support instance.
int	getColumnCount() Returns the number of columns.
Container	getContainer() Returns the internal container managed by this class that contains the child CssFloatLayoutContainer's for each column.
int	getPortletColumn(Portlet portlet) Returns the column of the given porlet.
int	getPortletIndex(Portlet portlet) Returns the index of the column for the given portlet.
int	getSpacing() Returns the spacing between portlets.
void	insert(IsWidget w, int index, int column) Inserts a portlet.
void	insert(Portlet portlet, int index, int column) Inserts a portlet.
boolean	isAutoScroll() Returns true if auto scroll is enabled (defaults to true).
void	remove(IsWidget w, int column) Removes a portlet from the portal.
void	remove(Portlet portlet, int column) Removes a portlet from the portal.
void	setAutoScroll(boolean autoScroll) True to automatically scroll the portal container when the user hovers over the top and bottom of the container (defaults to true).
void	setColumnWidth(int colIndex, double width) Sets the column's width.
void	setSpacing(int spacing) Sets the spacing between portlets (defaults to 10).

Methods inherited from class com.sencha.gxt.widget.core.client.Composite

isAttached, onBrowserEvent, setHeight, setPixelSize, setWidth

Methods inherited from class com.sencha.gxt.widget.core.client.Component

addBeforeHideHandler, addBeforeShowContextMenuHandler, addBeforeShowHandler, addBlurHandler, addDisableHandler, addEnableHandler, addFocusHandler, addHideHandler, addMoveHandler, addResizeHandler, addShowContextMenuHandler, addShowHandler, addStyleOnOver, clearSizeCache, disable, disableEvents, enable, enableEvents, fireEvent, focus, getData, getElement, getFocusSupport, getHideMode, getId, getItemId, getOffsetHeight, getOffsetWidth, getShadow, getShadowPosition, getStateId, getTabIndex, getToolTip, hide, hideToolTip, isAllowTextSelection, isAutoHeight, isAutoWidth, isDeferHeight, isEnabled, isRendered, isStateful, isVisible, isVisible, mask, mask, removeToolTip, setAllowTextSelection, setBorders, setBounds, setBounds, setContextMenu, setData, setDeferHeight, setEnabled, setHeight, setHideMode, setId, setItemId, setPagePosition, setPosition, setShadow, setShadowPosition, setSize, setStateful, setStateId, setTabIndex, setToolTip, setToolTip, setToolTipConfig, setVisible, setWidth, show, sync, syncSize, unmask

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

addAttachHandler, addBitlessDomHandler, addDomHandler, addHandler, asWidget, asWidgetOrNull, getLayoutData, getParent, removeFromParent, setLayoutData, sinkEvents, unsinkEvents

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

addStyleDependentName, addStyleName, ensureDebugId, ensureDebugId, getAbsoluteLeft, getAbsoluteTop, getOffsetHeight, getOffsetWidth, getStyleName, getStylePrimaryName, getTitle, isVisible, removeStyleDependentName, removeStyleName, setStyleDependentName, setStyleName, setStyleName, setStylePrimaryName, setTitle, setVisible, sinkBitlessEvent, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

PortalLayoutContainer

@UiConstructor
public PortalLayoutContainer(int numColumns)

Creates a portal layout container with the default appearance and the specified number of columns.

Parameters:

numColumns - the number of columns managed by this portal

PortalLayoutContainer

public PortalLayoutContainer(PortalLayoutContainer.PortalLayoutAppearance appearance,
                     int numColumns)

Creates a portal layout container with the specified appearance and number of columns.

Parameters:

appearance - the portal layout appearance

numColumns - the number of columns managed by this portal

Method Detail

add

public void add(IsWidget w,
       int column)

Adds a portlet to the portal.

Parameters:

w - the portlet

column - the column to add to

add

@UiChild(tagname="portlet")
public void add(Portlet portlet,
                      int column)

Adds a portlet to the portal.

Parameters:

portlet - the portlet to add

column - the column to add to

addDropHandler

public HandlerRegistration addDropHandler(PortalDropEvent.PortalDropHandler handler)

Description copied from interface: PortalDropEvent.HasPortalDropHandlers

Adds a PortalDropEvent.PortalDropHandler handler for PortalDropEvent events.

Specified by:

addDropHandler in interface PortalDropEvent.HasPortalDropHandlers

Parameters:

handler - the handler

Returns:

the registration for the event

addValidateDropHandler

public HandlerRegistration addValidateDropHandler(PortalValidateDropEvent.PortalValidateDropHandler handler)

Description copied from interface: PortalValidateDropEvent.HasPortalValidateDropHandlers

Adds a PortalValidateDropEvent.PortalValidateDropHandler handler for PortalValidateDropEvent events.

Specified by:

addValidateDropHandler in interface PortalValidateDropEvent.HasPortalValidateDropHandlers

Parameters:

handler - the handler

Returns:

the registration for the event

clear

public void clear()

Removes all portlets from all columns.

getAppearance

public PortalLayoutContainer.PortalLayoutAppearance getAppearance()

getAutoScrollSupport

public AutoScrollSupport getAutoScrollSupport()

Returns the scroll support instance.

Returns:

the scroll support

getColumnCount

public int getColumnCount()

Returns the number of columns.

Returns:

the number of columns

getContainer

public Container getContainer()

Returns the internal container managed by this class that contains the child CssFloatLayoutContainer's for each column.

Returns:

the container

getPortletColumn

public int getPortletColumn(Portlet portlet)

Returns the column of the given porlet.

Parameters:

portlet - the portlet

Returns:

the column or -1 if not found

getPortletIndex

public int getPortletIndex(Portlet portlet)

Returns the index of the column for the given portlet.

Parameters:

portlet - the portlet

Returns:

the index or -1 if not found

getSpacing

public int getSpacing()

Returns the spacing between portlets.

Returns:

the spacing the spacing in pixels

insert

public void insert(IsWidget w,
          int index,
          int column)

Inserts a portlet.

Parameters:

w - the portlet to added

index - the insert index

column - the column to insert into

insert

public void insert(Portlet portlet,
          int index,
          int column)

Inserts a portlet.

Parameters:

portlet - the portlet to add

index - the insert index

column - the column to insert into

isAutoScroll

public boolean isAutoScroll()

Returns true if auto scroll is enabled (defaults to true).

Returns:

true if auto scroll enabled

remove

public void remove(IsWidget w,
          int column)

Removes a portlet from the portal.

Parameters:

w - the width

column - the column

remove

public void remove(Portlet portlet,
          int column)

Removes a portlet from the portal.

Parameters:

portlet - the portlet to remove

column - the column

setAutoScroll

public void setAutoScroll(boolean autoScroll)

True to automatically scroll the portal container when the user hovers over the top and bottom of the container (defaults to true).

Parameters:

autoScroll - true to enable auto scroll

See Also:

AutoScrollSupport

setColumnWidth

public void setColumnWidth(int colIndex,
                  double width)

Sets the column's width.

Parameters:

colIndex - the column index

width - the column width

setSpacing

public void setSpacing(int spacing)

Sets the spacing between portlets (defaults to 10).

Parameters:

spacing - the spacing in pixels