SearchTopicByNameFragment.java

package org.qii.weiciyuan.ui.topic;

import org.qii.weiciyuan.R;
import org.qii.weiciyuan.bean.TopicResultListBean;
import org.qii.weiciyuan.bean.android.AsyncTaskLoaderResult;
import org.qii.weiciyuan.dao.topic.TopicDao;
import org.qii.weiciyuan.support.error.WeiboException;
import org.qii.weiciyuan.support.lib.MyAsyncTask;
import org.qii.weiciyuan.support.utils.GlobalContext;
import org.qii.weiciyuan.support.utils.Utility;
import org.qii.weiciyuan.ui.basefragment.AbstractMessageTimeLineFragment;
import org.qii.weiciyuan.ui.browser.BrowserWeiboMsgActivity;
import org.qii.weiciyuan.ui.loader.SearchTopicByNameLoader;
import org.qii.weiciyuan.ui.send.WriteWeiboActivity;

import android.content.Intent;
import android.os.Bundle;
import android.support.v4.content.Loader;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.Toast;

/**
 * User: qii
 * Date: 12-9-26
 */
public class SearchTopicByNameFragment
        extends AbstractMessageTimeLineFragment<TopicResultListBean> {

    private String q;

    //page 0 and page 1 data is same
    private int page = 1;

    private TopicResultListBean bean = new TopicResultListBean();

    private FollowTopicTask followTopicTask;
    private UnFollowTopicTask unFollowTopicTask;

    @Override
    public TopicResultListBean getList() {
        return bean;
    }

    public SearchTopicByNameFragment() {

    }

    public SearchTopicByNameFragment(String q) {
        this.q = q;
    }

    @Override
    public void onDetach() {
        super.onDetach();
        Utility.cancelTasks(followTopicTask, unFollowTopicTask);
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        outState.putString("q", q);
        outState.putInt("page", page);
        outState.putParcelable("bean", bean);
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);

        switch (getCurrentState(savedInstanceState)) {
            case FIRST_TIME_START:
                getPullToRefreshListView().setRefreshing();
                loadNewMsg();
                break;
            case SCREEN_ROTATE:
                //nothing
                refreshLayout(bean);
                break;
            case ACTIVITY_DESTROY_AND_CREATE:
                q = savedInstanceState.getString("q");
                page = savedInstanceState.getInt("page");
                getList()
                        .addNewData((TopicResultListBean) savedInstanceState.getParcelable("bean"));
                getAdapter().notifyDataSetChanged();
                refreshLayout(getList());
                break;
        }
    }

    @Override
    protected void newMsgLoaderSuccessCallback(TopicResultListBean newValue, Bundle loaderArgs) {
        if (newValue != null && getActivity() != null && newValue.getSize() > 0) {
            getList().addNewData(newValue);
            getAdapter().notifyDataSetChanged();
            getListView().setSelectionAfterHeaderView();
            buildActionBatSubtitle();
        }
    }

    @Override
    protected void oldMsgLoaderSuccessCallback(TopicResultListBean newValue) {
        if (newValue != null && newValue.getSize() > 0) {
            getList().addOldData(newValue);
            page++;
            buildActionBatSubtitle();
        }
    }

    @Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        super.onCreateOptionsMenu(menu, inflater);
        inflater.inflate(R.menu.actionbar_menu_searchtopicbynamefragment, menu);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case R.id.menu_write:
                Intent intent = new Intent(getActivity(), WriteWeiboActivity.class);
                intent.putExtra("token", GlobalContext.getInstance().getSpecialToken());
                intent.putExtra("account", GlobalContext.getInstance().getAccountBean());
                intent.putExtra("content", "#" + q + "#");
                startActivity(intent);
                break;

            case R.id.menu_refresh:
                pullToRefreshListView.setRefreshing();
                loadNewMsg();
                break;
            case R.id.menu_follow_topic:
                if (Utility.isTaskStopped(followTopicTask)) {
                    followTopicTask = new FollowTopicTask();
                    followTopicTask.executeOnExecutor(MyAsyncTask.THREAD_POOL_EXECUTOR);
                }
                break;
            case R.id.menu_unfollow_topic:
                if (Utility.isTaskStopped(unFollowTopicTask)) {
                    unFollowTopicTask = new UnFollowTopicTask();
                    unFollowTopicTask.executeOnExecutor(MyAsyncTask.THREAD_POOL_EXECUTOR);
                }
                break;
        }
        return super.onOptionsItemSelected(item);
    }

    @Override
    protected void listViewItemClick(AdapterView parent, View view, int position, long id) {
        startActivity(BrowserWeiboMsgActivity.newIntent(bean.getItemList().get(position),
                GlobalContext.getInstance().getSpecialToken()));
    }

    private void buildActionBatSubtitle() {
        int newSize = bean.getTotal_number();
        String number = bean.getSize() + "/" + newSize;
        getActivity().getActionBar().setSubtitle(number);
    }

    private class FollowTopicTask extends MyAsyncTask<Void, Boolean, Boolean> {

        WeiboException e;

        @Override
        protected Boolean doInBackground(Void... params) {
            try {
                return new TopicDao(GlobalContext.getInstance().getSpecialToken()).follow(q);
            } catch (WeiboException e) {
                this.e = e;
                cancel(true);
            }
            return false;
        }

        @Override
        protected void onCancelled(Boolean aBoolean) {
            super.onCancelled(aBoolean);
            if (Utility.isAllNotNull(getActivity(), this.e)) {
                Toast.makeText(getActivity(), e.getError(), Toast.LENGTH_SHORT).show();
            }
        }

        @Override
        protected void onPostExecute(Boolean aBoolean) {
            super.onPostExecute(aBoolean);
            if (getActivity() == null) {
                return;
            }
            if (aBoolean) {
                Toast.makeText(getActivity(), getString(R.string.follow_topic_successfully),
                        Toast.LENGTH_SHORT).show();
            } else {
                Toast.makeText(getActivity(), getString(R.string.follow_topic_failed),
                        Toast.LENGTH_SHORT).show();
            }
        }
    }

    private class UnFollowTopicTask extends MyAsyncTask<Void, Boolean, Boolean> {

        WeiboException e;

        @Override
        protected Boolean doInBackground(Void... params) {
            try {
                return new TopicDao(GlobalContext.getInstance().getSpecialToken()).destroy(q);
            } catch (WeiboException e) {
                this.e = e;
                cancel(true);
            }
            return false;
        }

        @Override
        protected void onCancelled(Boolean aBoolean) {
            super.onCancelled(aBoolean);
            if (Utility.isAllNotNull(getActivity(), this.e)) {
                Toast.makeText(getActivity(), e.getError(), Toast.LENGTH_SHORT).show();
            }
        }

        @Override
        protected void onPostExecute(Boolean aBoolean) {
            super.onPostExecute(aBoolean);
            if (getActivity() == null) {
                return;
            }
            if (aBoolean) {
                Toast.makeText(getActivity(), getString(R.string.unfollow_topic_successfully),
                        Toast.LENGTH_SHORT).show();
            } else {
                Toast.makeText(getActivity(), getString(R.string.unfollow_topic_failed),
                        Toast.LENGTH_SHORT).show();
            }
        }
    }

    @Override
    protected Loader<AsyncTaskLoaderResult<TopicResultListBean>> onCreateNewMsgLoader(int id,
            Bundle args) {
        String token = GlobalContext.getInstance().getSpecialToken();
        String word = this.q;
        page = 1;
        return new SearchTopicByNameLoader(getActivity(), token, word, String.valueOf(page));
    }

    @Override
    protected Loader<AsyncTaskLoaderResult<TopicResultListBean>> onCreateOldMsgLoader(int id,
            Bundle args) {
        String token = GlobalContext.getInstance().getSpecialToken();
        String word = this.q;
        return new SearchTopicByNameLoader(getActivity(), token, word, String.valueOf(page + 1));
    }
}