Merge "Load correct thumbnail size when switching to grid from list (and visa versa)."

import static com.android.documentsui.Shared.DEBUG;

import static com.android.documentsui.State.MODE_GRID;

import static com.android.documentsui.State.MODE_LIST;

import static com.android.documentsui.State.MODE_UNKNOWN;

import android.content.ContentProviderClient;

import android.content.ContentResolver;

public class IconHelper {

    private static String TAG = "IconHelper";

    private Context mContext;

    private final Context mContext;

    // Updated when icon size is set.

    private ThumbnailCache mCache;

    private Point mThumbSize;

    // The display mode (MODE_GRID, MODE_LIST, etc).

     * @param mode See {@link State.MODE_LIST} and {@link State.MODE_GRID}.

     */

    public void setViewMode(@ViewMode int mode) {

        // TODO: Instead of exposing setMode, make the mode final, and make separate instances for

        // grid/list.

        mMode = mode;

        int thumbSize = getThumbSize(mode);

        mThumbSize = new Point(thumbSize, thumbSize);

        mCache = DocumentsApplication.getThumbnailsCache(mContext, mThumbSize);

    }

    private int getThumbSize(int mode) {

        int thumbSize;

        switch (mode) {

            case MODE_GRID:

            default:

                throw new IllegalArgumentException("Unsupported layout mode: " + mode);

        }

        mMode = mode;

        mThumbSize = new Point(thumbSize, thumbSize);

        return thumbSize;

    }

    /**