de.grobox.transportr.ui.BasePopupMenu.java Source code

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Here is the source code for de.grobox.transportr.ui.BasePopupMenu.java

Source

/*
 *    Transportr
 *
 *    Copyright (c) 2013 - 2018 Torsten Grote
 *
 *    This program is Free Software: you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as
 *    published by the Free Software Foundation, either version 3 of the
 *    License, or (at your option) any later version.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package de.grobox.transportr.ui;

import android.content.Context;
import android.support.annotation.ColorInt;
import android.support.v4.graphics.drawable.DrawableCompat;
import android.util.TypedValue;
import android.view.MenuItem;
import android.view.View;
import android.widget.PopupMenu;
import android.widget.PopupMenu.OnMenuItemClickListener;

import java.lang.reflect.Field;
import java.lang.reflect.Method;

import de.grobox.transportr.R;

public abstract class BasePopupMenu extends PopupMenu implements OnMenuItemClickListener {

    protected final Context context;
    @ColorInt
    protected final int iconColor;

    protected BasePopupMenu(Context context, View anchor) {
        super(context, anchor);

        this.context = context;
        setOnMenuItemClickListener(this);

        TypedValue typedValue = new TypedValue();
        context.getTheme().resolveAttribute(R.attr.colorControlNormal, typedValue, true);
        iconColor = typedValue.data;
    }

    protected void showIcons() {
        // very ugly hack to show icons in PopupMenu
        // see: http://stackoverflow.com/a/18431605
        try {
            Field[] fields = BasePopupMenu.class.getSuperclass().getDeclaredFields();
            for (Field field : fields) {
                if ("mPopup".equals(field.getName())) {
                    field.setAccessible(true);
                    Object menuPopupHelper = field.get(this);
                    Class<?> classPopupHelper = Class.forName(menuPopupHelper.getClass().getName());
                    Method setForceIcons = classPopupHelper.getMethod("setForceShowIcon", boolean.class);
                    setForceIcons.invoke(menuPopupHelper, true);
                    break;
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

        // colorize icons according to theme
        for (int i = 0; i < getMenu().size(); i++) {
            DrawableCompat.setTint(getMenu().getItem(i).getIcon().mutate(), iconColor);
        }
    }

    @Override
    public boolean onMenuItemClick(MenuItem item) {
        return false;
    }

}