SegmentIntentBuilder.java

/**
 * Copyright (c) 2013, Redsolution LTD. All rights reserved.
 *
 * This file is part of Xabber project; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License, Version 3.
 *
 * Xabber 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 com.xabber.android.data.intent;

import android.content.Context;
import android.content.Intent;
import android.net.Uri;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

public class SegmentIntentBuilder<T extends SegmentIntentBuilder<?>> extends
        BaseIntentBuilder<T> {

    private final List<String> segments;

    public SegmentIntentBuilder(Context context, Class<?> cls) {
        super(context, cls);
        segments = new ArrayList<>();
    }

    protected int getSegmentCount() {
        return segments.size();
    }

    @SuppressWarnings("unchecked")
    public T addSegment(String segment) {
        segments.add(segment);
        return (T) this;
    }

    void preBuild() {
    }

    @Override
    public Intent build() {
        preBuild();
        Intent intent = super.build();
        Uri.Builder builder = new Uri.Builder();
        for (String segment : segments)
            builder.appendPath(segment);
        Uri uri = builder.build();
        uri = Uri.parse(uri.toString()); // Workaround for android 1.5
        intent.setData(uri);
        return intent;
    }

    /**
     * Parse segments from the intent.
     *
     * @param intent
     * @return
     */
    static List<String> getSegments(Intent intent) {
        Uri uri = intent.getData();
        if (uri == null) {
            List<String> emptyList = Collections.emptyList();
            return emptyList;
        }
        return uri.getPathSegments();
    }

    /**
     * @param intent
     * @param index
     * @return Segment from the intent data uri or <code>null</code>.
     */
    public static String getSegment(Intent intent, int index) {
        Uri uri = intent.getData();
        if (uri == null)
            return null;
        List<String> list = uri.getPathSegments();
        if (list.size() <= index)
            return null;
        return list.get(index);
    }

}