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## org.htmlparser.lexerapplications.thumbelina
Class Sequencer

    java.lang.Object
      java.lang.Thread
          org.htmlparser.lexerapplications.thumbelina.Sequencer

All Implemented Interfaces:
  Runnable

public class Sequencer
extends Thread

Display received images at a constant rate.

Field Summary
`protected static int` | `DEFAULT_DELAY` The default delay time, 500 milliseconds.
`protected boolean` | `mActive` Activity state.
`protected int` | `mDelay` Delay between picture displays.
`protected ArrayList` | `mPending` Pictures awaiting display.
`protected Random` | `mRandom` Random number generator for picture placement.
`protected Thumbelina` | `mThumbelina` The thumbelina object to drive.

Fields inherited from class java.lang.Thread
`MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY`

Constructor Summary
`Sequencer(Thumbelina thumbelina)` Creates a new instance of a Sequencer.

Method Summary
`void` | `add(Image image, URL url)` Add an image to the pending list.
`void` | `add(Image image, URL url, boolean background)` Add an image to the panel.
`int` | `getDelay()` Getter for property delay.
`protected void` | `place(Picture picture, boolean add)` Place a picture in the display area.
`protected Point` | `random(String url, int width, int height)` Compute a random point to load the image.
`void` | `reset()` Clears the pending images list.
`void` | `run()` Display pictures from pending list with delay between.
`void` | `setDelay(int delay)` Setter for property delay.

Methods inherited from class java.lang.Thread
`activeCount, checkAccess, countStackFrames, currentThread, destroy, dumpStack, enumerate, getContextClassLoader, getName, getPriority, getThreadGroup, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setName, setPriority, sleep, sleep, start, stop, stop, suspend, toString, yield`

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

Field Detail

### DEFAULT_DELAY

    protected static final int DEFAULT_DELAY

  The default delay time, 500 milliseconds.

  See Also:
    Constant Field Values

### mThumbelina

    protected Thumbelina mThumbelina

  The thumbelina object to drive.

### mPending

    protected ArrayList mPending

  Pictures awaiting display.

### mActive

    protected boolean mActive

  Activity state. `true` means fetching and displaying, `false` not.

### mDelay

    protected int mDelay

  Delay between picture displays.

### mRandom

    protected Random mRandom

  Random number generator for picture placement.

Constructor Detail

### Sequencer

    public Sequencer(Thumbelina thumbelina)

  Creates a new instance of a Sequencer.

Parameters:
  `thumbelina` - The object to push images to.

Method Detail

### reset

    public void reset()

  Clears the pending images list.

### random

    protected Point random(String url,
                           int width,
                           int height)

  Compute a random point to load the image. Generate a random point for one of the corners of the image and then condition the numbers so the image is on screen.

  Parameters:
    `url` - The url this picture was fetched from. Used in computing the random position, so the picture is always placed in the same location, even when refetched.
    `width` - The width of the image.
    `height` - The height of the image.
  Returns:
    The random point to use.

### add

    public void add(Image image,
                    URL url)

  Add an image to the pending list.

  Parameters:
    `image` - The image to add.
    `url` - The url the image came from.

### add

    public void add(Image image,
                    URL url,
                    boolean background)

  Add an image to the panel.

  Parameters:
    `image` - The image to add.
    `url` - The url the image came from.
    `background` - If `true`, just add to pending list.

### place

    protected void place(Picture picture,
                         boolean add)

  Place a picture in the display area. Places the picture at a random location on screen.

  Parameters:
    `picture` - The picture to place on screen.
    `add` - If `true`, the picture is added to the history.

### run

    public void run()

  Display pictures from pending list with delay between. If the list is empty it waits on the pending list for new pictures.

### getDelay

    public int getDelay()

  Getter for property delay.

  Returns:
    Value of property delay.

### setDelay

    public void setDelay(int delay)

  Setter for property delay.

  Parameters:
    `delay` - New value of property delay.

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| © 2004 Somik Raha Mar 14, 2004
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HTML Parser is an open source library released under LGPL.