Package de.knightsoftnet.mtwidgets.client.ui.widget

Class ImageLazyLoading

java.lang.Object

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

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

com.google.gwt.user.client.ui.Image

de.knightsoftnet.mtwidgets.client.ui.widget.ImageLazyLoading

All Implemented Interfaces:

com.google.gwt.event.dom.client.HasAllDragAndDropHandlers, com.google.gwt.event.dom.client.HasAllGestureHandlers, com.google.gwt.event.dom.client.HasAllMouseHandlers, com.google.gwt.event.dom.client.HasAllTouchHandlers, com.google.gwt.event.dom.client.HasClickHandlers, com.google.gwt.event.dom.client.HasDoubleClickHandlers, com.google.gwt.event.dom.client.HasDragEndHandlers, com.google.gwt.event.dom.client.HasDragEnterHandlers, com.google.gwt.event.dom.client.HasDragHandlers, com.google.gwt.event.dom.client.HasDragLeaveHandlers, com.google.gwt.event.dom.client.HasDragOverHandlers, com.google.gwt.event.dom.client.HasDragStartHandlers, com.google.gwt.event.dom.client.HasDropHandlers, com.google.gwt.event.dom.client.HasErrorHandlers, com.google.gwt.event.dom.client.HasGestureChangeHandlers, com.google.gwt.event.dom.client.HasGestureEndHandlers, com.google.gwt.event.dom.client.HasGestureStartHandlers, com.google.gwt.event.dom.client.HasLoadHandlers, com.google.gwt.event.dom.client.HasMouseDownHandlers, com.google.gwt.event.dom.client.HasMouseMoveHandlers, com.google.gwt.event.dom.client.HasMouseOutHandlers, com.google.gwt.event.dom.client.HasMouseOverHandlers, com.google.gwt.event.dom.client.HasMouseUpHandlers, com.google.gwt.event.dom.client.HasMouseWheelHandlers, com.google.gwt.event.dom.client.HasTouchCancelHandlers, com.google.gwt.event.dom.client.HasTouchEndHandlers, com.google.gwt.event.dom.client.HasTouchMoveHandlers, com.google.gwt.event.dom.client.HasTouchStartHandlers, com.google.gwt.event.logical.shared.HasAttachHandlers, com.google.gwt.event.shared.HasHandlers, com.google.gwt.user.client.EventListener, com.google.gwt.user.client.ui.HasVisibility, com.google.gwt.user.client.ui.IsWidget, com.google.gwt.user.client.ui.SourcesClickEvents, com.google.gwt.user.client.ui.SourcesLoadEvents, com.google.gwt.user.client.ui.SourcesMouseEvents

public class ImageLazyLoading
extends com.google.gwt.user.client.ui.Image

Image lazy loading is based on the GWT Image and provides all the functionality inside. The difference is, image urls are put into the image tag when image is in the viewport so no images are loaded by the browser, which are not visible.

Author:

Manfred Tremmel

Nested Class Summary

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

com.google.gwt.user.client.ui.UIObject.DebugIdImpl, com.google.gwt.user.client.ui.UIObject.DebugIdImplEnabled

Field Summary

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

DEBUG_ID_PREFIX

Constructor Summary

Constructors

Constructor	Description
ImageLazyLoading()
ImageLazyLoading(com.google.gwt.dom.client.Element pelement)
ImageLazyLoading(com.google.gwt.resources.client.ImageResource presource)
ImageLazyLoading(com.google.gwt.safehtml.shared.SafeUri purl)
ImageLazyLoading(com.google.gwt.safehtml.shared.SafeUri purl, int pleft, int ptop, int pwidth, int pheight)
ImageLazyLoading(String purl)
ImageLazyLoading(String purl, int pleft, int ptop, int pwidth, int pheight)

Method Summary

Modifier and Type	Method	Description
static IntersectionObserver	createIntersectionObserver(ObserverEventListenerCallback callback)
void	setUrl(com.google.gwt.safehtml.shared.SafeUri purl)

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

addClickHandler, addClickListener, addDoubleClickHandler, addDragEndHandler, addDragEnterHandler, addDragHandler, addDragLeaveHandler, addDragOverHandler, addDragStartHandler, addDropHandler, addErrorHandler, addGestureChangeHandler, addGestureEndHandler, addGestureStartHandler, addLoadHandler, addLoadListener, addMouseDownHandler, addMouseListener, addMouseMoveHandler, addMouseOutHandler, addMouseOverHandler, addMouseUpHandler, addMouseWheelHandler, addMouseWheelListener, addTouchCancelHandler, addTouchEndHandler, addTouchMoveHandler, addTouchStartHandler, getAltText, getHeight, getOriginLeft, getOriginTop, getUrl, getWidth, onBrowserEvent, onLoad, prefetch, prefetch, removeClickListener, removeLoadListener, removeMouseListener, removeMouseWheelListener, setAltText, setResource, setUrl, setUrlAndVisibleRect, setUrlAndVisibleRect, setVisibleRect, wrap

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, isAttached, isOrWasAttached, onAttach, onDetach, onUnload, 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, resolvePotentialElement, 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

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

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

fireEvent

Constructor Detail

ImageLazyLoading

public ImageLazyLoading()

ImageLazyLoading

public ImageLazyLoading(com.google.gwt.dom.client.Element pelement)

ImageLazyLoading

public ImageLazyLoading(com.google.gwt.resources.client.ImageResource presource)

ImageLazyLoading

public ImageLazyLoading(com.google.gwt.safehtml.shared.SafeUri purl,
                        int pleft,
                        int ptop,
                        int pwidth,
                        int pheight)

ImageLazyLoading

public ImageLazyLoading(com.google.gwt.safehtml.shared.SafeUri purl)

ImageLazyLoading

public ImageLazyLoading(String purl,
                        int pleft,
                        int ptop,
                        int pwidth,
                        int pheight)

ImageLazyLoading

public ImageLazyLoading(String purl)

Method Detail

setUrl

public void setUrl(com.google.gwt.safehtml.shared.SafeUri purl)

Overrides:

setUrl in class com.google.gwt.user.client.ui.Image

createIntersectionObserver

public static IntersectionObserver createIntersectionObserver(ObserverEventListenerCallback callback)