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Make filter more flexible

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Now allows words to match out of order and restores searching in album and
artist fields
This commit is contained in:
Christopher Eby 2010-03-08 00:03:41 -06:00
parent 775170c1bc
commit d66f5dae08
1 changed files with 33 additions and 17 deletions
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50
src/org/kreed/vanilla/SongAdapter.java
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@ -73,7 +73,22 @@ public class SongAdapter extends BaseAdapter implements Filterable {
return mFilter;
}
private static final String[] mRanges = { "[2abc]", "[3def]", "[4ghi]", "[5jkl]", "[6mno]", "[7pqrs]", "[8tuv]", "[9wxyz]"};
private static final String[] mRanges = { ".", "[2abc]", "[3def]", "[4ghi]", "[5jkl]", "[6mno]", "[7pqrs]", "[8tuv]", "[9wxyz]"};
private static Matcher createMatcher(String input)
{
String patternString = "";
for (int i = 0, end = input.length(); i != end; ++i) {
char c = input.charAt(i);
int value = c - '1';
if (value >= 0 && value < 9)
patternString += mRanges[value];
else
patternString += c;
}
return Pattern.compile(patternString, Pattern.CASE_INSENSITIVE).matcher("");
}
private class ArrayFilter extends Filter {
@Override
protected FilterResults performFiltering(CharSequence filter)
@ -84,29 +99,30 @@ public class SongAdapter extends BaseAdapter implements Filterable {
results.values = Arrays.asList(mAllObjects);
results.count = mAllObjects.length;
} else {
String patternString = "";
for (int i = 0, end = filter.length(); i != end; ++i) {
char c = filter.charAt(i);
int value = c - '2';
if (value >= 0 && value < 8)
patternString += mRanges[value];
else
patternString += c;
}
Pattern pattern = Pattern.compile(patternString);
Matcher matcher = pattern.matcher("");
String[] words = filter.toString().split("\\s+");
Matcher[] matchers = new Matcher[words.length];
for (int i = words.length; --i != -1; )
matchers[i] = createMatcher(words[i]);
int count = mAllObjects.length;
ArrayList<Song> newValues = new ArrayList<Song>();
newValues.ensureCapacity(count);
outer:
for (int i = 0; i != count; ++i) {
Song value = mAllObjects[i];
matcher.reset(value.title.toLowerCase());
Song song = mAllObjects[i];
if (matcher.find())
newValues.add(value);
for (int j = matchers.length; --j != -1; ) {
if (song.artist != null && matchers[j].reset(song.artist).find())
continue;
if (song.album != null && matchers[j].reset(song.album).find())
continue;
if (song.title != null && matchers[j].reset(song.title).find())
continue;
continue outer;
}
newValues.add(song);
}
newValues.trimToSize();