X-Git-Url: http://gitweb.fperrin.net/?a=blobdiff_plain;ds=sidebyside;f=tim%2Fprune%2Fdata%2FMediaList.java;fp=tim%2Fprune%2Fdata%2FMediaList.java;h=3fc87fe81a8dc936e5651dd541794f98927e068f;hb=f35b6d628f68e3b5ef19965ad8988d0dd1eb8efa;hp=0000000000000000000000000000000000000000;hpb=3745d70b1427bb8ac1a085e47cbdc566936784e1;p=GpsPrune.git

diff --git a/tim/prune/data/MediaList.java b/tim/prune/data/MediaList.java
new file mode 100644
index 0000000..3fc87fe
--- /dev/null
+++ b/tim/prune/data/MediaList.java
@@ -0,0 +1,227 @@
+package tim.prune.data;
+
+import java.util.ArrayList;
+
+/**
+ * Class to hold a list of Media, either Photos or Audio files
+ */
+public abstract class MediaList
+{
+	/** list of media file objects */
+	protected ArrayList<MediaFile> _media = null;
+
+
+	/**
+	 * Empty constructor
+	 */
+	public MediaList() {
+		this(null);
+	}
+
+	/**
+	 * Constructor
+	 * @param inList ArrayList containing media objects
+	 */
+	protected MediaList(ArrayList<MediaFile> inList)
+	{
+		_media = inList;
+		if (_media == null) {
+			_media = new ArrayList<MediaFile>();
+		}
+	}
+
+	/**
+	 * @return the number of media in the list
+	 */
+	public int getNumMedia() {
+		return _media.size();
+	}
+
+	/**
+	 * Add an object to the list
+	 * @param inObject object to add
+	 */
+	public void addMedia(MediaFile inObject)
+	{
+		if (inObject != null) {
+			_media.add(inObject);
+		}
+	}
+
+	/**
+	 * Add an object to the list at a specified index (used for undo)
+	 * @param inObject object to add
+	 * @param inIndex index at which to add
+	 */
+	public void addMedia(MediaFile inObject, int inIndex)
+	{
+		if (inObject != null) {
+			_media.add(inIndex, inObject);
+		}
+	}
+
+
+	/**
+	 * Remove the selected media from the list
+	 * @param inIndex index number to remove
+	 */
+	public void deleteMedia(int inIndex)
+	{
+		// Maybe throw exception if this fails?
+		_media.remove(inIndex);
+	}
+
+
+	/**
+	 * Checks if the specified object is already in the list
+	 * @param inMedia media object to check
+	 * @return true if it's already in the list
+	 */
+	public boolean contains(MediaFile inMedia) {
+		return (getMediaIndex(inMedia) > -1);
+	}
+
+
+	/**
+	 * Get the index of the given media
+	 * @param inMedia object to check
+	 * @return index of this object in the list, or -1 if not found
+	 */
+	public int getMediaIndex(MediaFile inMedia)
+	{
+		// Check if we need to check
+		final int num = getNumMedia();
+		if (num <= 0 || inMedia == null || inMedia.getFile() == null)
+			return -1;
+		// Loop over list
+		for (int i=0; i<num; i++)
+		{
+			MediaFile m = _media.get(i);
+			if (m != null && m.equals(inMedia)) {
+				return i;
+			}
+		}
+		// not found
+		return -1;
+	}
+
+
+	/**
+	 * Get the media at the given index
+	 * @param inIndex index number, starting at 0
+	 * @return specified object
+	 */
+	public MediaFile getMedia(int inIndex)
+	{
+		if (inIndex < 0 || inIndex >= getNumMedia()) return null;
+		return _media.get(inIndex);
+	}
+
+
+	/**
+	 * Crop the list to the specified size
+	 * @param inIndex previous size
+	 */
+	public void cropTo(int inIndex)
+	{
+		if (inIndex <= 0)
+		{
+			// delete whole list
+			_media.clear();
+		}
+		else
+		{
+			// delete to previous size
+			while (_media.size() > inIndex) {
+				_media.remove(_media.size()-1);
+			}
+		}
+	}
+
+
+	/**
+	 * @return array of file names
+	 */
+	public String[] getNameList()
+	{
+		final int num = getNumMedia();
+		String[] names = new String[num];
+		for (int i=0; i<num; i++) {
+			names[i] = getMedia(i).getFile().getName();
+		}
+		return names;
+	}
+
+
+	/**
+	 * @return true if list contains correlated media
+	 */
+	public boolean hasCorrelatedMedia()
+	{
+		for (MediaFile m : _media) {
+			if (m.getDataPoint() != null) {
+				return true;
+			}
+		}
+		return false;
+	}
+
+	/**
+	 * @return true if list contains uncorrelated media
+	 */
+	public boolean hasUncorrelatedMedia()
+	{
+		for (MediaFile m : _media) {
+			if (m.getDataPoint() == null) {
+				return true;
+			}
+		}
+		return false;
+	}
+
+
+	/**
+	 * Remove all correlated media from the list
+	 */
+	public void removeCorrelatedMedia()
+	{
+		if (getNumMedia() > 0)
+		{
+			// Construct new list to copy into
+			ArrayList<MediaFile> listCopy = new ArrayList<MediaFile>();
+			// Loop over list
+			for (MediaFile m : _media)
+			{
+				// Copy media if it has no point
+				if (m != null)
+				{
+					if (m.getDataPoint() == null)
+						listCopy.add(m);
+					else
+						m.resetCachedData();
+				}
+			}
+			// Switch reference to new list
+			_media = listCopy;
+		}
+	}
+
+	/**
+	 * @return clone of list contents
+	 */
+	public abstract MediaList cloneList();
+
+	/**
+	 * Restore contents from other MediaList
+	 * @param inOther MediaList with cloned contents
+	 */
+	public void restore(MediaList inOther)
+	{
+		_media.clear();
+		if (inOther != null && inOther.getNumMedia() > 0)
+		{
+			// Copy contents from other list
+			_media.addAll(inOther._media);
+		}
+	}
+}