PictureFragment.java

package io.github.mthli.Tweetin.Fragment.Picture;

import android.graphics.Bitmap;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.text.method.LinkMovementMethod;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.ImageRequest;
import com.android.volley.toolbox.Volley;
import com.pnikosis.materialishprogress.ProgressWheel;
import com.sothree.slidinguppanel.SlidingUpPanelLayout;
import io.github.mthli.Tweetin.R;
import io.github.mthli.Tweetin.Task.Profile.ProfileTask;
import io.github.mthli.Tweetin.Tweet.Tweet;
import io.github.mthli.Tweetin.Tweet.TweetUnit;
import io.github.mthli.Tweetin.View.ViewUnit;
import uk.co.senab.photoview.PhotoViewAttacher;

public class PictureFragment extends Fragment {
    private SlidingUpPanelLayout slidingUpPanelLayout;
    public SlidingUpPanelLayout getSlidingUpPanelLayout() {
        return slidingUpPanelLayout;
    }

    private ProgressWheel progressWheel;
    private TextView reloadView;
    private ImageView pictureView;

    private String pictureURL = null;
    private RequestQueue requestQueue;

    private Bitmap originBitmap = null;
    public Bitmap getOriginBitmap() {
        return originBitmap;
    }

    private View profile;
    public View getProfile() {
        return profile;
    }

    private ProfileTask profileTask;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup viewGroup, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.picture_fragment, viewGroup, false);
    }

    @Override
    public void onViewCreated(View view, Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);

        slidingUpPanelLayout = (SlidingUpPanelLayout) getView().findViewById(R.id.picture_fragment_sliding_layout);
        slidingUpPanelLayout.setPanelState(SlidingUpPanelLayout.PanelState.COLLAPSED);
        slidingUpPanelLayout.setShadowHeight(0);

        profile = LayoutInflater.from(getActivity()).inflate(R.layout.profile, null, false);

        FrameLayout drag = (FrameLayout) getView().findViewById(R.id.picture_fragment_drag);
        FrameLayout.LayoutParams layoutParams = new FrameLayout.LayoutParams(
                FrameLayout.LayoutParams.MATCH_PARENT,
                FrameLayout.LayoutParams.MATCH_PARENT
        );
        drag.addView(profile, layoutParams);

        progressWheel = (ProgressWheel) getView().findViewById(R.id.picture_fragment_progress_bar);
        progressWheel.setVisibility(View.VISIBLE);

        reloadView = (TextView) getView().findViewById(R.id.picture_fragment_reload);
        reloadView.setVisibility(View.GONE);

        pictureView = (ImageView) getView().findViewById(R.id.picture_fragment_picture);
        pictureView.setVisibility(View.GONE);

        TextView descriptionView = (TextView) getView().findViewById(R.id.picture_fragment_description);
        descriptionView.getBackground().setAlpha(153);
        descriptionView.setVisibility(View.VISIBLE);

        Tweet tweet = (new TweetUnit(getActivity())).getTweetFromIntent(getActivity().getIntent());
        pictureURL = tweet.getPictureURL();
        if (pictureURL == null) {
            pictureURL = getString(R.string.picture_default_picture_url);
        }
        String description = tweet.getText();
        if (description == null) {
            description = getString(R.string.picture_default_desciption);
        } else {
            description = "@" + tweet.getScreenName() + ": " + description;
        }

        slidingUpPanelLayout.setPanelSlideListener(new SlidingUpPanelLayout.PanelSlideListener() {
            @Override
            public void onPanelSlide(View panel, float slideOffset) {}

            @Override
            public void onPanelCollapsed(View panel) {
                if (profileTask != null && profileTask.getStatus() == AsyncTask.Status.RUNNING) {
                    profileTask.cancel(true);
                }
                slidingUpPanelLayout.setShadowHeight(0);
            }

            @Override
            public void onPanelExpanded(View panel) {}

            @Override
            public void onPanelAnchored(View panel) {}

            @Override
            public void onPanelHidden(View panel) {
                if (profileTask != null && profileTask.getStatus() == AsyncTask.Status.RUNNING) {
                    profileTask.cancel(true);
                }
                slidingUpPanelLayout.setShadowHeight(0);
            }
        });

        reloadView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                load();
            }
        });
        reloadView.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View view) {
                Toast.makeText(getActivity(), R.string.picture_toast_reload, Toast.LENGTH_SHORT).show();
                return true;
            }
        });

        descriptionView.setMovementMethod(LinkMovementMethod.getInstance());
        descriptionView.setText((new TweetUnit(getActivity())).getSpanFromText(description));

        requestQueue = Volley.newRequestQueue(getActivity());

        load();
    }

    private void load() {
        progressWheel.setVisibility(View.VISIBLE);
        reloadView.setVisibility(View.GONE);
        pictureView.setVisibility(View.GONE);

        ImageRequest imageRequest = new ImageRequest(
                pictureURL,
                new Response.Listener<Bitmap>() {
                    @Override
                    public void onResponse(Bitmap bitmap) {
                        originBitmap = bitmap;

                        pictureView.setImageBitmap(bitmap);
                        PhotoViewAttacher photoViewAttacher = new PhotoViewAttacher(pictureView);
                        photoViewAttacher.setZoomable(true);
                        photoViewAttacher.update();

                        progressWheel.setVisibility(View.GONE);
                        reloadView.setVisibility(View.GONE);
                        pictureView.setVisibility(View.VISIBLE);
                    }
                },
                0,
                0,
                Bitmap.Config.ARGB_8888,
                new Response.ErrorListener() {
                    @Override
                    public void onErrorResponse(VolleyError volleyError) {
                        progressWheel.setVisibility(View.GONE);
                        reloadView.setVisibility(View.VISIBLE);
                        pictureView.setVisibility(View.GONE);
                    }
                }
        );
        requestQueue.add(imageRequest);
    }

    public void showProfile(String screenName) {
        if (screenName == null) {
            return;
        }

        if (profileTask != null && profileTask.getStatus() == AsyncTask.Status.RUNNING) {
            profileTask.cancel(true);
        }

        profile.findViewById(R.id.profile_progress_bar).setVisibility(View.VISIBLE);
        profile.findViewById(R.id.profile_all).setVisibility(View.GONE);

        slidingUpPanelLayout.setShadowHeight((int) ViewUnit.getElevation(getActivity(), 2));
        slidingUpPanelLayout.setPanelState(SlidingUpPanelLayout.PanelState.EXPANDED);

        profileTask = new ProfileTask(getActivity(), profile, screenName);
        profileTask.execute();
    }

    public void cancelAllTasks() {
        if (profileTask != null && profileTask.getStatus() == AsyncTask.Status.RUNNING) {
            profileTask.cancel(true);
        }
        requestQueue.stop();
    }
}