ImageProvider

de.topobyte.jeography.tiles.source

Class ImageProvider<T,D>

java.lang.Object
- de.topobyte.jeography.tiles.source.ImageProvider<T,D>

Type Parameters:

T - the type of things.

D - the type of data.

All Implemented Interfaces:

ImageSource<T,D>

Direct Known Subclasses:

ImageProviderDisk, ImageProviderGeometry, ImageProviderHttp
```
public abstract class ImageProvider<T,D>
extends Object
implements ImageSource<T,D>
```

Constructor Summary

Constructors

Constructor and Description
`ImageProvider(int nThreads)` Create a new ImageProvider.

Method Summary

All Methods

Instance Methods

Abstract Methods

Concrete Methods
Modifier and Type	Method and Description
`void`	`addLoadListener(LoadListener<T,D> listener)` Add a listener to be notified on load / fail events.
`abstract D`	`load(T thing)` This is the method that this ImageProvider will use to get an Image.
`void`	`provide(T thing)` Provide the data for this thing.
`void`	`removeLoadListener(LoadListener<T,D> listener)` Remove a listener from the set of listeners.
`void`	`stopRunning()` Stop producing new elements.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ImageProvider
```
public ImageProvider(int nThreads)
```
    Create a new ImageProvider.
    
    Parameters:
    
    nThreads - the number of threads to use for loading.
- Method Detail
  - load
```
public abstract D load(T thing)
```
    This is the method that this ImageProvider will use to get an Image. Implement this in order to create a special purpose provider.
    
    Specified by:
    
    load in interface ImageSource<T,D>
    
    Parameters:
    
    thing - the thing that shall be loaded.
    
    Returns:
    
    the loaded data.
  - provide
```
public void provide(T thing)
```
    Provide the data for this thing. Return to the caller immediately. Notify the listeners as soon as loading is done.
    
    Parameters:
    
    thing - the thing to provide data for.
  - stopRunning
```
public void stopRunning()
```
    Stop producing new elements.
  - addLoadListener
```
public void addLoadListener(LoadListener<T,D> listener)
```
    Add a listener to be notified on load / fail events.
    
    Parameters:
    
    listener - the listener to add.
  - removeLoadListener
```
public void removeLoadListener(LoadListener<T,D> listener)
```
    Remove a listener from the set of listeners.
    
    Parameters:
    
    listener - the listener to remove.