@Override
public Drawable mutate() {
if (!mMutated && super.mutate() == this) {
mLevelListState.mLows = mLevelListState.mLows.clone();
mLevelListState.mHighs = mLevelListState.mHighs.clone();
mMutated = true;
}
return this;
}
public void addLevel(int low, int high, Drawable drawable) {
if (drawable != null) {
mLevelListState.addLevel(low, high, drawable);
// in case the new state matches our current state...
onLevelChange(getLevel());
}
}
@Override
protected boolean onLevelChange(int level) {
int idx = mLevelListState.indexOfLevel(level);
if (selectDrawable(idx)) {
return true;
}
return super.onLevelChange(level);
}
@Override
public void inflate(Resources r, XmlPullParser parser, AttributeSet attrs)
throws XmlPullParserException, IOException {
super.inflate(r, parser, attrs);
int type;
int low = 0;
final int innerDepth = parser.getDepth() + 1;
int depth;
while ((type = parser.next()) != XmlPullParser.END_DOCUMENT
&& ((depth = parser.getDepth()) >= innerDepth || type != XmlPullParser.END_TAG)) {
if (type != XmlPullParser.START_TAG) {
continue;
}
if (depth > innerDepth || !parser.getName().equals("item")) {
continue;
}
TypedArray a =
r.obtainAttributes(attrs, com.android.internal.R.styleable.LevelListDrawableItem);
low = a.getInt(com.android.internal.R.styleable.LevelListDrawableItem_minLevel, 0);
int high = a.getInt(com.android.internal.R.styleable.LevelListDrawableItem_maxLevel, 0);
int drawableRes =
a.getResourceId(com.android.internal.R.styleable.LevelListDrawableItem_drawable, 0);
a.recycle();
if (high < 0) {
throw new XmlPullParserException(
parser.getPositionDescription() + ": <item> tag requires a 'maxLevel' attribute");
}
Drawable dr;
if (drawableRes != 0) {
dr = r.getDrawable(drawableRes);
} else {
while ((type = parser.next()) == XmlPullParser.TEXT) {}
if (type != XmlPullParser.START_TAG) {
throw new XmlPullParserException(
parser.getPositionDescription()
+ ": <item> tag requires a 'drawable' attribute or "
+ "child tag defining a drawable");
}
dr = Drawable.createFromXmlInner(r, parser, attrs);
}
mLevelListState.addLevel(low, high, dr);
}
onLevelChange(getLevel());
}