com.maryanovsky.map.client
Class Tile

java.lang.Object
  extended by com.google.gwt.user.client.ui.UIObject
      extended by com.google.gwt.user.client.ui.Widget
          extended by com.google.gwt.user.client.ui.Composite
              extended by com.maryanovsky.map.client.Tile
All Implemented Interfaces:
HasAttachHandlers, HasHandlers, EventListener, HasVisibility, IsRenderable, IsWidget
Direct Known Subclasses:
ImageTile, NodeTile

public abstract class Tile
extends Composite

The interface for implementing map tiles. This is an abstract class rather than an interface because tiles must be Widgets, and by subclassing Composite, we allow a subclass to implement a tile using any actual widget it chooses.

Author:
Maryanovsky Alexander

Nested Class Summary
 
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
Tile()
           
 
Method Summary
abstract  void cancelLoading()
          If the tile is currently being loaded, cancels loading it.
 boolean isReady()
          Returns whether this tile is currently ready.
protected  void markReady()
          Marks the tile as ready and notifies our ready listener, if any.
protected  void markUnready()
          Marks the tile as unready and notifies our ready listener, if any.
 void setReadyListener(ReadyListener<Tile> readyListener)
          Sets the specified ReadyListener to be notified when the tile starts and finishes loading.
abstract  void setTileSizePixels(SizeView tileSize)
          Sets the size of the tile, in pixels.
abstract  void startLoading()
          Marks the tile as unready and starts loading it.
 
Methods inherited from class com.google.gwt.user.client.ui.Composite
claimElement, getWidget, initializeClaimedElement, initWidget, isAttached, onAttach, onBrowserEvent, 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, onUnload, removeFromParent, setLayoutData, sinkEvents
 
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, unsinkEvents
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

Tile

public Tile()
Method Detail

setReadyListener

public void setReadyListener(ReadyListener<Tile> readyListener)
Sets the specified ReadyListener to be notified when the tile starts and finishes loading.


isReady

public boolean isReady()
Returns whether this tile is currently ready. For image-based tiles, for example, this means that all the images comprising the tile have been loaded.


markUnready

protected void markUnready()
Marks the tile as unready and notifies our ready listener, if any. This method is expected to be called by the concrete subclass when the tile becomes unready or just before it starts loading.


markReady

protected void markReady()
Marks the tile as ready and notifies our ready listener, if any. This method is expected to be called by the concrete subclass when the tile becomes ready.


startLoading

public abstract void startLoading()
Marks the tile as unready and starts loading it. When done, marks the tile as ready.


cancelLoading

public abstract void cancelLoading()
If the tile is currently being loaded, cancels loading it.


setTileSizePixels

public abstract void setTileSizePixels(SizeView tileSize)
Sets the size of the tile, in pixels. This should stretch/compress the content of the tile to the specified size. A null value resets it to the default size, if applicable.