LabelWheelAdapter.java

package cn.mutils.app.ui.adapter;

import java.util.List;

import cn.mutils.core.ILabelItem;
import kankan.wheel.widget.WheelAdapter;

/**
 * {@link WheelAdapter} Whose data item is {@link ILabelItem}
 */
@SuppressWarnings("unused")
public class LabelWheelAdapter implements WheelAdapter {

    protected List<? extends ILabelItem> mDataProvider;

    protected int mMaxDesiredLength;

    public List<? extends ILabelItem> getDataProvider() {
        return mDataProvider;
    }

    public void setDataProvider(List<? extends ILabelItem> dataProvider) {
        mDataProvider = dataProvider;
    }

    public ILabelItem getLabelItem(int index) {
        if (mDataProvider == null) {
            return null;
        }
        if (index < 0 || index >= mDataProvider.size()) {
            return null;
        }
        return mDataProvider.get(index);
    }

    @Override
    public int getItemsCount() {
        if (mDataProvider == null) {
            return 0;
        }
        return mDataProvider.size();
    }

    @Override
    public String getItem(int index) {
        if (mDataProvider == null) {
            return null;
        }
        if (index < 0 || index >= mDataProvider.size()) {
            return null;
        }
        String str = mDataProvider.get(index).getLabel();
        if (str != null && mMaxDesiredLength > 1) {
            if (str.length() > mMaxDesiredLength) {
                str = str.substring(0, mMaxDesiredLength - 1) + "...";
            }
        }
        return str;
    }

    @Override
    public int getMaximumLength() {
        int max = 0;
        for (int i = getItemsCount() - 1; i >= 0; i--) {
            String label = mDataProvider.get(i).getLabel();
            if (label != null) {
                int labelLength = label.length();
                if (labelLength > max) {
                    max = labelLength;
                }
            }
        }
        return max;
    }

    public void setMaxDesiredLength(int maxDesiredLength) {
        mMaxDesiredLength = maxDesiredLength;
    }
}