com.hardcopy.retrowatchle.RetroWatchFragmentAdapter.java Source code

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Here is the source code for com.hardcopy.retrowatchle.RetroWatchFragmentAdapter.java

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/*
 * Copyright (C) 2014 The Retro Watch - Open source smart watch project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.hardcopy.retrowatchle;

import java.util.Locale;

import android.content.Context;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;

/**
 * A {@link FragmentPagerAdapter} that returns a fragment corresponding to
 * one of the sections/tabs/pages.
 */
public class RetroWatchFragmentAdapter extends FragmentPagerAdapter {

    public static final String TAG = "RetroWatchFragmentAdapter";

    // Total count
    public static final int FRAGMENT_COUNT = 4;

    // Fragment position
    public static final int FRAGMENT_POS_MESSAGE_LIST = 0;
    public static final int FRAGMENT_POS_FILTERS = 1;
    public static final int FRAGMENT_POS_RSS = 2;
    public static final int FRAGMENT_POS_WATCH_CONTROL = 3;

    public static final String ARG_SECTION_NUMBER = "section_number";

    // System
    private Context mContext = null;
    private IFragmentListener mFragmentListener = null;

    private Fragment mMessageListFragment = null;
    private Fragment mFiltersFragment = null;
    private Fragment mRssFragment = null;
    private Fragment mWatchControlFragment = null;

    public RetroWatchFragmentAdapter(FragmentManager fm, Context c, IFragmentListener l) {
        super(fm);
        mContext = c;
        mFragmentListener = l;
    }

    @Override
    public Fragment getItem(int position) {
        // getItem is called to instantiate the fragment for the given page.
        Fragment fragment;
        boolean needToSetArguments = false;

        if (position == FRAGMENT_POS_MESSAGE_LIST) {
            if (mMessageListFragment == null) {
                mMessageListFragment = new MessageListFragment(mContext, mFragmentListener);
                needToSetArguments = true;
            }
            fragment = mMessageListFragment;

        } else if (position == FRAGMENT_POS_FILTERS) {
            if (mFiltersFragment == null) {
                mFiltersFragment = new FiltersFragment(mContext, mFragmentListener);
                needToSetArguments = true;
            }
            fragment = mFiltersFragment;

        } else if (position == FRAGMENT_POS_RSS) {
            if (mRssFragment == null) {
                mRssFragment = new RssFragment(mContext, mFragmentListener);
                needToSetArguments = true;
            }
            fragment = mRssFragment;

        } else if (position == FRAGMENT_POS_WATCH_CONTROL) {
            if (mWatchControlFragment == null) {
                mWatchControlFragment = new WatchControlFragment(mContext, mFragmentListener);
                needToSetArguments = true;
            }
            fragment = mWatchControlFragment;

        } else {
            fragment = null;
        }

        // TODO: If you have something to notify to the fragment.
        if (needToSetArguments) {
            Bundle args = new Bundle();
            args.putInt(ARG_SECTION_NUMBER, position + 1);
            fragment.setArguments(args);
        }

        return fragment;
    }

    @Override
    public int getCount() {
        return FRAGMENT_COUNT;
    }

    @Override
    public CharSequence getPageTitle(int position) {
        Locale l = Locale.getDefault();
        switch (position) {
        case FRAGMENT_POS_MESSAGE_LIST:
            return mContext.getString(R.string.title_messagelist).toUpperCase(l);
        case FRAGMENT_POS_FILTERS:
            return mContext.getString(R.string.title_filters).toUpperCase(l);
        case FRAGMENT_POS_RSS:
            return mContext.getString(R.string.title_rss).toUpperCase(l);
        case FRAGMENT_POS_WATCH_CONTROL:
            return mContext.getString(R.string.title_watchcontrol).toUpperCase(l);
        }
        return null;
    }

}