Android Open Source - GalDroid Image Information View

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License

The source code is released under:
GNU General Public License
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Java Source Code

package de.raptor2101.GalDroid.Activities.Views;
/*from w  ww .  j a  v a  2  s  . c  o  m*/
import java.lang.ref.WeakReference;
import java.text.DateFormat;
import java.util.List;
import java.util.Locale;

import android.content.Context;
import android.util.AttributeSet;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import android.widget.ProgressBar;
import android.widget.TableLayout;
import android.widget.TextView;
import de.raptor2101.GalDroid.R;
import de.raptor2101.GalDroid.Activities.GalDroidApp;
import de.raptor2101.GalDroid.WebGallery.DegMinSec;
import de.raptor2101.GalDroid.WebGallery.ImageInformation;
import de.raptor2101.GalDroid.WebGallery.ImageInformation.WhiteBalance;
import de.raptor2101.GalDroid.WebGallery.Interfaces.GalleryObject;
import de.raptor2101.GalDroid.WebGallery.Interfaces.GalleryObjectComment;
import de.raptor2101.GalDroid.WebGallery.Tasks.ImageInformationLoaderTaskListener;
import de.raptor2101.GalDroid.WebGallery.Tasks.ImageInformationLoaderTask;

public class ImageInformationView extends TableLayout implements ImageInformationLoaderTaskListener, GalleryImageViewListener {
  private final static String CLASS_TAG = "ImageInformationView";

  private ImageInformationLoaderTask mLoadImageInformationTask;

  private GalleryImageView mCurrentListenedImageView;
  private WeakReference<GalleryImageView> mCurrentSelectedImageView;

  private ProgressBar mProgressBarTags;

  private ProgressBar mProgressBarComments;

  private ViewGroup mViewComments;

  private TextView mViewTags;

  private boolean mImageInformationsLoaded;

  private boolean mTagsLoaded;

  private boolean mCommentsLoaded;

  private GalleryObject mCurrentLoadingObject;

  public ImageInformationView(Context context, AttributeSet attrs) {
    super(context, attrs);
    initialize(context);
  }

  public ImageInformationView(Context context) {
    super(context);
    initialize(context);
  }

  private void initialize(Context context) {
    LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    inflater.inflate(R.layout.image_information_view, this);

    mProgressBarTags = (ProgressBar) findViewById(R.id.progressBarTags);
    mProgressBarComments = (ProgressBar) findViewById(R.id.progressBarComments);
    mViewComments = (ViewGroup) findViewById(R.id.layoutComments);
    mViewTags = (TextView) findViewById(R.id.textTags);

    mCurrentSelectedImageView = new WeakReference<GalleryImageView>(null);
  }

  @Override
  protected void onDetachedFromWindow() {
    super.onDetachedFromWindow();
    
    mCurrentListenedImageView = null;
    
    try {
      mLoadImageInformationTask.cancel(true);
    } catch (InterruptedException e) {
      
    }
  }
  
  public void setGalleryImageView(GalleryImageView imageView) {
    GalleryObject requestedObject = imageView.getGalleryObject();
    Log.d(CLASS_TAG, String.format("setGalleryImageView: %s", requestedObject));

    GalleryImageView currentView = mCurrentSelectedImageView.get();
    if (currentView != null && currentView.getGalleryObject().equals(requestedObject)) {
      Log.d(CLASS_TAG, "extractImageInformation: view already selected!");
      return;
    }

    mCurrentSelectedImageView = new WeakReference<GalleryImageView>(imageView);
    if (getVisibility() == VISIBLE) {
      extractImageInformation(imageView);
    }
  }

  private void extractImageInformation(GalleryImageView imageView) {
    GalleryObject requestedObject = imageView.getGalleryObject();
    Log.d(CLASS_TAG, String.format("extractImageInformation: %s", requestedObject));

    if (mCurrentLoadingObject != null) {
      try {
        mLoadImageInformationTask.cancel(mCurrentLoadingObject, false);
      } catch (InterruptedException e) {
        // nothing to do here
      }
    }

    clearImageInformations();

    mCommentsLoaded = false;
    mTagsLoaded = false;
    mImageInformationsLoaded = false;

    if (imageView.isLoaded()) {
      enqueueLoadingTask(requestedObject);
    } else {
      registerLoadingListener(imageView);
    }
  }

  private void enqueueLoadingTask(GalleryObject galleryObject) {
    Log.d(CLASS_TAG, String.format("enqueueExtrationTask: %s", galleryObject));
    mCurrentLoadingObject = galleryObject;
    mLoadImageInformationTask.load(galleryObject);
  }

  private void registerLoadingListener(GalleryImageView imageView) {
    Log.d(CLASS_TAG, String.format("registerLoadingListener: %s", imageView.getGalleryObject()));
    if (mCurrentListenedImageView != null) {
      mCurrentListenedImageView.setListener(null);
    }

    mCurrentListenedImageView = imageView;
    mCurrentListenedImageView.setListener(this);
  }

  @Override
  public void setVisibility(int visibility) {
    Log.d(CLASS_TAG, "setVisibility");
    GalleryImageView imageView = mCurrentSelectedImageView.get();
    if (visibility == VISIBLE && imageView != null) {
      extractImageInformation(imageView);
    }

    super.setVisibility(visibility);
  }

  public void initialize() {
    GalDroidApp app = (GalDroidApp) getContext().getApplicationContext();
    mLoadImageInformationTask = new ImageInformationLoaderTask(this, app.getWebGallery(), app.getImageCache());

    mCommentsLoaded = false;
    mTagsLoaded = false;
    mImageInformationsLoaded = false;

    mLoadImageInformationTask.start();
  }

  private void clearImageInformations() {
    mViewTags.setText("");
    mViewTags.setVisibility(View.GONE);
    
    mViewComments.removeAllViews();
    mViewComments.setVisibility(View.GONE);
    
    TextView textView = (TextView) findViewById(R.id.textTitle);
    textView.setText("");

    
    textView = (TextView) findViewById(R.id.textUploadDate);
    textView.setText("");

    textView = (TextView) findViewById(R.id.textExifCreateDate);
    textView.setText("");

    textView = (TextView) findViewById(R.id.textExifAperture);
    textView.setText("");

    textView = (TextView) findViewById(R.id.textExifExposure);
    textView.setText("");

    textView = (TextView) findViewById(R.id.textExifFlash);
    textView.setText("");

    textView = (TextView) findViewById(R.id.textExifISO);
    textView.setText("");

    textView = (TextView) findViewById(R.id.textExifModel);
    textView.setText("");

    textView = (TextView) findViewById(R.id.textExifModel);
    textView.setText("");

    textView = (TextView) findViewById(R.id.textExifMake);
    textView.setText("");

    textView = (TextView) findViewById(R.id.textExifFocalLength);
    textView.setText("");

    textView = (TextView) findViewById(R.id.textExifWhiteBalance);
    textView.setText("");

    textView = (TextView) findViewById(R.id.textGeoLat);
    textView.setText("");

    textView = (TextView) findViewById(R.id.textGeoLong);
    textView.setText("");

    textView = (TextView) findViewById(R.id.textGeoHeight);
    textView.setText("");
    
    mProgressBarComments.setVisibility(GONE);
    mProgressBarTags.setVisibility(GONE);
  }

  public void onImageInformationLoaded(GalleryObject galleryObject, ImageInformation info) {
    GalleryImageView imageView = mCurrentSelectedImageView.get();
    if (imageView != null && imageView.getGalleryObject().equals(galleryObject)) {
      Log.d(CLASS_TAG, String.format("ImageInformation loaded for %s", galleryObject));
      TextView textField = (TextView) findViewById(R.id.textTitle);
      textField.setText(info.mTitle);
      textField = (TextView) findViewById(R.id.textUploadDate);
      textField.setText(info.mUploadDate.toLocaleString());
      textField = (TextView) findViewById(R.id.textExifCreateDate);
      textField.setText(info.mExifCreateDate);
      textField = (TextView) findViewById(R.id.textExifAperture);
      textField.setText(info.mExifAperture);
      textField = (TextView) findViewById(R.id.textExifExposure);
      textField.setText(String.format("1/%.0fs", info.mExifExposure));
      textField = (TextView) findViewById(R.id.textExifFlash);
      textField.setText(String.format("%d", info.mExifFlash));
      textField = (TextView) findViewById(R.id.textExifISO);
      textField.setText(info.mExifIso);
      textField = (TextView) findViewById(R.id.textExifModel);
      textField.setText(info.mExifModel);
      textField = (TextView) findViewById(R.id.textExifMake);
      textField.setText(info.mExifMake);
      textField = (TextView) findViewById(R.id.textExifFocalLength);
      textField.setText(String.format("%.0fmm", info.mExifFocalLength));
      textField = (TextView) findViewById(R.id.textExifWhiteBalance);
      if (info.mExifWhiteBalance == WhiteBalance.Auto) {
        textField.setText(R.string.object_exif_whitebalance_auto);
      } else {
        textField.setText(R.string.object_exif_whitebalance_manual);
      }
      
      if(info.mExifGpsAvailable) {
        DegMinSec val = info.mExifGpsLat;
        textField = (TextView) findViewById(R.id.textGeoLat);
        textField.setText(String.format("%.0f %.0f' %.2f\"", val.mDeg, val.mMin, val.mSec));
        
        val = info.mExifGpsLong;
        textField = (TextView) findViewById(R.id.textGeoLong);
        textField.setText(String.format("%.0f %.0f' %.2f\"", val.mDeg, val.mMin, val.mSec));
        
        textField = (TextView) findViewById(R.id.textGeoHeight);
        textField.setText(String.format("%.0f m", info.mExifHeight));
      } else {
        textField = (TextView) findViewById(R.id.textGeoLat);
        textField.setText("");
        
        textField = (TextView) findViewById(R.id.textGeoLong);
        textField.setText("");
        
        textField = (TextView) findViewById(R.id.textGeoHeight);
        textField.setText("");
      }
      mProgressBarComments.setVisibility(VISIBLE);
      mProgressBarTags.setVisibility(VISIBLE);
      mImageInformationsLoaded = true;
      resetCurrentLoadingImage();
    }
  }

  public void onImageTagsLoaded(GalleryObject galleryObject, List<String> tags) {
    GalleryImageView imageView = mCurrentSelectedImageView.get();
    if (imageView != null && imageView.getGalleryObject().equals(galleryObject)) {
      Log.d(CLASS_TAG, String.format("Tags (Count: %d) loaded for %s", tags.size(), galleryObject));
      StringBuilder stringBuilder = new StringBuilder(tags.size() * 10);
      for (String tag : tags) {
        stringBuilder.append(String.format("%s, ", tag));
      }
      int length = stringBuilder.length();
      if (length > 0) {
        stringBuilder.delete(stringBuilder.length() - 2, stringBuilder.length());
      }
      mViewTags.setText(stringBuilder);
      mProgressBarTags.setVisibility(View.GONE);
      mViewTags.setVisibility(View.VISIBLE);
      mTagsLoaded = true;
      resetCurrentLoadingImage();
    }
  }

  public void onImageCommetsLoaded(GalleryObject galleryObject, List<GalleryObjectComment> comments) {
    GalleryImageView imageView = mCurrentSelectedImageView.get();
    if (imageView != null && imageView.getGalleryObject().equals(galleryObject)) {
      Log.d(CLASS_TAG, String.format("Comments (Count: %d) loaded for %s", comments.size(), galleryObject));
      Context context = getContext();
      LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
      DateFormat dateFormat = DateFormat.getDateInstance(DateFormat.MEDIUM, Locale.getDefault());
      for (GalleryObjectComment comment : comments) {
        View commentView = inflater.inflate(R.layout.comment_entry, null);

        TextView textAuthor = (TextView) commentView.findViewById(R.id.textCommentAuthor);
        TextView textDate = (TextView) commentView.findViewById(R.id.textCommentPosted);
        TextView textMessage = (TextView) commentView.findViewById(R.id.textCommentMessage);

        textAuthor.setText(comment.getAuthorName());
        textDate.setText(dateFormat.format(comment.getCreateDate()));
        textMessage.setText(comment.getMessage());

        LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
        params.setMargins(0, 0, 0, 10);
        commentView.setLayoutParams(params);

        mViewComments.addView(commentView);
      }
      mViewComments.setVisibility(View.VISIBLE);
      mProgressBarComments.setVisibility(GONE);
      mCommentsLoaded = true;
      resetCurrentLoadingImage();
    }
  }

  private void resetCurrentLoadingImage() {
    if (isLoaded()) {
      mCurrentLoadingObject = null;
    }

  }

  public ImageInformationLoaderTask getImageInformationLoaderTask() {
    return mLoadImageInformationTask;
  }

  public void onLoadingStarted(GalleryObject galleryObject) {

  }

  public void onLoadingProgress(GalleryObject galleryObject, int currentValue, int maxValue) {

  }

  public void onLoadingCompleted(GalleryObject galleryObject) {
    enqueueLoadingTask(galleryObject);
    if (mCurrentListenedImageView != null) {
      mCurrentListenedImageView.setListener(null);
      mCurrentListenedImageView = null;
    }
  }

  public void onLoadingCancelled(GalleryObject galleryObject) {

  }

  public boolean isLoaded() {
    return mImageInformationsLoaded && mTagsLoaded && mCommentsLoaded;
  }

  public boolean areImageInformationsLoaded() {
    return mImageInformationsLoaded;
  }

  public boolean areTagsLoaded() {
    return mTagsLoaded;
  }

  public boolean areCommentsLoaded() {
    return mCommentsLoaded;
  }

  public GalleryImageView getCurrentListenedImageView() {
    return mCurrentListenedImageView;
  }

  public GalleryObject getCurrentLoadingObject() {
    return mCurrentLoadingObject;
  }
}
Java Source Code List
