X-Git-Url: http://gitweb.fperrin.net/?p=GpsPrune.git;a=blobdiff_plain;f=src%2Ftim%2Fprune%2Fdata%2FMediaObject.java;fp=src%2Ftim%2Fprune%2Fdata%2FMediaObject.java;h=8c53cafac220580338375300a6edbc583cacbd63;hp=0000000000000000000000000000000000000000;hb=ce6f2161b8596f7018d6a76bff79bc9e571f35fd;hpb=2d8cb72e84d5cc1089ce77baf1e34ea3ea2f8465

diff --git a/src/tim/prune/data/MediaObject.java b/src/tim/prune/data/MediaObject.java
new file mode 100644
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--- /dev/null
+++ b/src/tim/prune/data/MediaObject.java
@@ -0,0 +1,226 @@
+package tim.prune.data;
+
+import java.io.File;
+
+/**
+ * Class to represent a general media object for correlation.
+ * Subclasses are currently Photo and AudioClip
+ */
+public abstract class MediaObject
+{
+	/** File where media is stored (if any) */
+	protected File _file = null;
+	/** Name of file */
+	protected String _name = null;
+	/** Cached data if downloaded */
+	protected byte[] _data = null;
+	/** URL if media came from net */
+	protected String _url = null;
+	/** Timestamp, if any */
+	protected Timestamp _timestamp = null;
+	/** Associated DataPoint if correlated */
+	protected DataPoint _dataPoint = null;
+	/** Status when loaded */
+	private Status _originalStatus = Status.NOT_CONNECTED;
+	/** Current status */
+	private Status _currentStatus = Status.NOT_CONNECTED;
+
+	/** Connection status */
+	public enum Status
+	{
+		/** Media is not connected to any point */
+		NOT_CONNECTED,
+		/** Media has been connected to a point since it was loaded */
+		TAGGED,
+		/** Media is connected to a point */
+		CONNECTED
+	};
+
+
+	/**
+	 * Constructor
+	 * @param inFile file object
+	 * @param inStamp timestamp object
+	 */
+	public MediaObject(File inFile, Timestamp inStamp)
+	{
+		_file = inFile;
+		_name = inFile.getName();
+		_data = null;
+		_timestamp = inStamp;
+	}
+
+	/**
+	 * Constructor for byte arrays
+	 * @param inData byte array containing data
+	 * @param inName name of object
+	 * @param inUrl source url of object or null
+	 */
+	public MediaObject(byte[] inData, String inName, String inUrl)
+	{
+		_file = null;
+		_data = inData;
+		_name = inName;
+		_url = inUrl;
+		_timestamp = null;
+	}
+
+	/**
+	 * @return the file object
+	 */
+	public File getFile() {
+		return _file;
+	}
+
+	/** @return media name */
+	public String getName() {
+		return _name;
+	}
+
+	/**
+	 * @return the timestamp object
+	 */
+	public Timestamp getTimestamp() {
+		return _timestamp;
+	}
+
+	/**
+	 * @param inTimestamp Timestamp object
+	 */
+	public void setTimestamp(Timestamp inTimestamp) {
+		_timestamp = inTimestamp;
+	}
+
+	/**
+	 * @return byte data of media
+	 */
+	public byte[] getByteData() {
+		return _data;
+	}
+
+	/**
+	 * @return source Url (or null)
+	 */
+	public String getUrl() {
+		return _url;
+	}
+
+	/**
+	 * @return the full path to the media, either filename or url
+	 */
+	public String getFullPath()
+	{
+		if (_file != null) return _file.getAbsolutePath();
+		return getUrl();
+	}
+
+	/**
+	 * @return true if details are valid (might not have timestamp)
+	 */
+	public boolean isValid()
+	{
+		return ((_file != null && _file.exists() && _file.canRead())
+			|| (_data != null && _data.length > 0));
+	}
+
+	/**
+	 * @return true if file has timestamp
+	 */
+	public boolean hasTimestamp() {
+		 return _timestamp != null && _timestamp.isValid();
+	}
+
+	/**
+	 * Check if this object refers to the same object as another
+	 * @param inOther other MediaObject
+	 * @return true if the objects are the same
+	 */
+	public boolean equals(MediaObject inOther)
+	{
+		if (_file != null)
+		{
+			// compare file objects
+			return (inOther != null && inOther.getFile() != null && getFile() != null
+				&& inOther.getFile().equals(getFile()));
+		}
+		// compare data arrays
+		return (inOther != null && _name != null && inOther._name != null && _name.equals(inOther._name)
+			&& _data != null && inOther._data != null && _data.length == inOther._data.length);
+	}
+
+	/**
+	 * Set the data point associated with the photo
+	 * @param inPoint DataPoint with coordinates etc
+	 */
+	public void setDataPoint(DataPoint inPoint)
+	{
+		_dataPoint = inPoint;
+		// set status according to point
+		if (inPoint == null) {
+			setCurrentStatus(Status.NOT_CONNECTED);
+		}
+		else {
+			setCurrentStatus(Status.CONNECTED);
+		}
+	}
+
+	/**
+	 * @return the DataPoint object
+	 */
+	public DataPoint getDataPoint() {
+		return _dataPoint;
+	}
+
+	/**
+	 * @param inStatus status of file when loaded
+	 */
+	public void setOriginalStatus(Status inStatus)
+	{
+		_originalStatus = inStatus;
+		_currentStatus = inStatus;
+	}
+
+	/**
+	 * @return status of file when it was loaded
+	 */
+	public Status getOriginalStatus()
+	{
+		return _originalStatus;
+	}
+
+	/**
+	 * @return current status
+	 */
+	public Status getCurrentStatus()
+	{
+		return _currentStatus;
+	}
+	/**
+	 * @param inStatus current status
+	 */
+	public void setCurrentStatus(Status inStatus)
+	{
+		_currentStatus = inStatus;
+	}
+
+	/**
+	 * @return true if this object is connected to a point
+	 */
+	public boolean isConnected()
+	{
+		return _currentStatus != Status.NOT_CONNECTED;
+	}
+
+	/**
+	 * @return true if status has changed since load
+	 */
+	public boolean isModified()
+	{
+		return _currentStatus != _originalStatus;
+	}
+
+	/**
+	 * Reset any cached data (eg thumbnail)
+	 */
+	public void resetCachedData() {}
+}