(ComposeActivity) clean up, automatique format and implementation of

- Share a link and extract the title, images, author's name #136

app/src/main/java/com/keylesspalace/tusky/ComposeActivity.java

@@ -24,7 +24,6 @@ import android.content.SharedPreferences;
 import android.content.pm.PackageManager;
 import android.content.res.AssetFileDescriptor;
 import android.content.res.Resources;
-import android.database.Cursor;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
 import android.graphics.drawable.BitmapDrawable;
@@ -39,10 +38,8 @@ import android.os.Environment;
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.provider.MediaStore;
-import android.provider.OpenableColumns;
 import android.support.annotation.AttrRes;
 import android.support.annotation.NonNull;
-import android.support.annotation.Nullable;
 import android.support.annotation.StringRes;
 import android.support.design.widget.Snackbar;
 import android.support.v13.view.inputmethod.InputConnectionCompat;
@@ -56,6 +53,7 @@ import android.support.v7.widget.Toolbar;
 import android.text.Editable;
 import android.text.SpannableStringBuilder;
 import android.text.Spanned;
+import android.text.TextUtils;
 import android.text.TextWatcher;
 import android.text.style.URLSpan;
 import android.view.MenuItem;
@@ -72,15 +70,17 @@ import android.widget.TextView;
 import com.keylesspalace.tusky.entity.Media;
 import com.keylesspalace.tusky.entity.Status;
 import com.keylesspalace.tusky.fragment.ComposeOptionsFragment;
-import com.keylesspalace.tusky.util.DownsizeImageTask;
-import com.keylesspalace.tusky.view.EditTextTyped;
 import com.keylesspalace.tusky.util.CountUpDownLatch;
+import com.keylesspalace.tusky.util.DownsizeImageTask;
 import com.keylesspalace.tusky.util.IOUtils;
 import com.keylesspalace.tusky.util.Log;
+import com.keylesspalace.tusky.util.MediaUtils;
+import com.keylesspalace.tusky.util.ParserUtils;
 import com.keylesspalace.tusky.util.SpanUtils;
 import com.keylesspalace.tusky.util.ThemeUtils;
+import com.keylesspalace.tusky.view.EditTextTyped;
+import com.squareup.picasso.Picasso;
 
-import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.IOException;
@@ -92,7 +92,6 @@ import java.util.Date;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Locale;
-import java.util.Random;
 
 import butterknife.BindView;
 import butterknife.ButterKnife;
@@ -103,17 +102,43 @@ import retrofit2.Call;
 import retrofit2.Callback;
 import retrofit2.Response;
 
-public class  ComposeActivity extends BaseActivity implements ComposeOptionsFragment.Listener {
+import static com.keylesspalace.tusky.util.MediaUtils.MEDIA_SIZE_UNKNOWN;
+import static com.keylesspalace.tusky.util.MediaUtils.getMediaSize;
+import static com.keylesspalace.tusky.util.MediaUtils.inputStreamGetBytes;
+import static com.keylesspalace.tusky.util.StringUtils.carriageReturn;
+import static com.keylesspalace.tusky.util.StringUtils.randomAlphanumericString;
+
+public class ComposeActivity extends BaseActivity implements ComposeOptionsFragment.Listener, ParserUtils.ParserListener {
     private static final String TAG = "ComposeActivity"; // logging tag
     private static final int STATUS_CHARACTER_LIMIT = 500;
     private static final int STATUS_MEDIA_SIZE_LIMIT = 4000000; // 4MB
     private static final int MEDIA_PICK_RESULT = 1;
     private static final int MEDIA_TAKE_PHOTO_RESULT = 2;
     private static final int PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE = 1;
-    private static final int MEDIA_SIZE_UNKNOWN = -1;
     private static final int COMPOSE_SUCCESS = -1;
     private static final int THUMBNAIL_SIZE = 128; // pixels
-
+    @BindView(R.id.compose_edit_field)
+    EditTextTyped textEditor;
+    @BindView(R.id.compose_media_preview_bar)
+    LinearLayout mediaPreviewBar;
+    @BindView(R.id.compose_content_warning_bar)
+    View contentWarningBar;
+    @BindView(R.id.field_content_warning)
+    EditText contentWarningEditor;
+    @BindView(R.id.characters_left)
+    TextView charactersLeft;
+    @BindView(R.id.floating_btn)
+    Button floatingBtn;
+    @BindView(R.id.compose_photo_pick)
+    ImageButton pickBtn;
+    @BindView(R.id.compose_photo_take)
+    ImageButton takeBtn;
+    @BindView(R.id.action_toggle_nsfw)
+    Button nsfwBtn;
+    @BindView(R.id.postProgress)
+    ProgressBar postProgress;
+    @BindView(R.id.action_toggle_visibility)
+    ImageButton visibilityBtn;
     private String inReplyToId;
     private ArrayList<QueuedMedia> mediaQueued;
     private CountUpDownLatch waitForMediaLatch;
@@ -127,93 +152,7 @@ public class  ComposeActivity extends BaseActivity implements ComposeOptionsFrag
     private Uri photoUploadUri;
     // this only exists when a status is trying to be sent, but uploads are still occurring
     private ProgressDialog finishingUploadDialog;
-    @BindView(R.id.compose_edit_field)
-    EditTextTyped textEditor;
-    @BindView(R.id.compose_media_preview_bar) LinearLayout mediaPreviewBar;
-    @BindView(R.id.compose_content_warning_bar) View contentWarningBar;
-    @BindView(R.id.field_content_warning) EditText contentWarningEditor;
-    @BindView(R.id.characters_left) TextView charactersLeft;
-    @BindView(R.id.floating_btn) Button floatingBtn;
-    @BindView(R.id.compose_photo_pick) ImageButton pickBtn;
-    @BindView(R.id.compose_photo_take) ImageButton takeBtn;
-    @BindView(R.id.action_toggle_nsfw) Button nsfwBtn;
-    @BindView(R.id.postProgress) ProgressBar postProgress;
-    @BindView(R.id.action_toggle_visibility) ImageButton visibilityBtn;
 
-    private static class QueuedMedia {
-        enum Type {
-            IMAGE,
-            VIDEO
-        }
-
-        enum ReadyStage {
-            DOWNSIZING,
-            UPLOADING
-        }
-
-        Type type;
-        ImageView preview;
-        Uri uri;
-        String id;
-        Call<Media> uploadRequest;
-        URLSpan uploadUrl;
-        ReadyStage readyStage;
-        byte[] content;
-        long mediaSize;
-
-        QueuedMedia(Type type, Uri uri, ImageView preview, long mediaSize) {
-            this.type = type;
-            this.uri = uri;
-            this.preview = preview;
-            this.mediaSize = mediaSize;
-        }
-    }
-
-    /**This saves enough information to re-enqueue an attachment when restoring the activity. */
-    private static class SavedQueuedMedia implements Parcelable {
-        QueuedMedia.Type type;
-        Uri uri;
-        Bitmap preview;
-        long mediaSize;
-
-        SavedQueuedMedia(QueuedMedia.Type type, Uri uri, ImageView view, long mediaSize) {
-            this.type = type;
-            this.uri = uri;
-            this.preview = ((BitmapDrawable) view.getDrawable()).getBitmap();
-            this.mediaSize = mediaSize;
-        }
-
-        SavedQueuedMedia(Parcel parcel) {
-            type = (QueuedMedia.Type) parcel.readSerializable();
-            uri = parcel.readParcelable(Uri.class.getClassLoader());
-            preview = parcel.readParcelable(Bitmap.class.getClassLoader());
-            mediaSize = parcel.readLong();
-        }
-
-        @Override
-        public int describeContents() {
-            return 0;
-        }
-
-        @Override
-        public void writeToParcel(Parcel dest, int flags) {
-            dest.writeSerializable(type);
-            dest.writeParcelable(uri, flags);
-            dest.writeParcelable(preview, flags);
-            dest.writeLong(mediaSize);
-        }
-
-        public static final Parcelable.Creator<SavedQueuedMedia> CREATOR
-                = new Parcelable.Creator<SavedQueuedMedia>() {
-            public SavedQueuedMedia createFromParcel(Parcel in) {
-                return new SavedQueuedMedia(in);
-            }
-
-            public SavedQueuedMedia[] newArray(int size) {
-                return new SavedQueuedMedia[size];
-            }
-        };
-    }
 
     @Override
     public void onCreate(Bundle savedInstanceState) {
@@ -337,6 +276,8 @@ public class  ComposeActivity extends BaseActivity implements ComposeOptionsFrag
         postProgress.setVisibility(View.INVISIBLE);
         updateNsfwButtonColor();
 
+        final ParserUtils parser = new ParserUtils(this);
+
         // Setup the main text field.
         setEditTextMimeTypes(null); // new String[] { "image/gif", "image/webp" }
         final int mentionColour = ThemeUtils.getColor(this, R.attr.compose_mention_color);
@@ -348,7 +289,8 @@ public class  ComposeActivity extends BaseActivity implements ComposeOptionsFrag
             }
 
             @Override
-            public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
+            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+            }
 
             @Override
             public void afterTextChanged(Editable editable) {
@@ -356,6 +298,13 @@ public class  ComposeActivity extends BaseActivity implements ComposeOptionsFrag
             }
         });
 
+        textEditor.addOnPasteListener(new EditTextTyped.OnPasteListener() {
+            @Override
+            public void onPaste() {
+                parser.getPastedURLText(ComposeActivity.this);
+            }
+        });
+
         // Add any mentions to the text field when a reply is first composed.
         if (mentionedUsernames != null) {
             StringBuilder builder = new StringBuilder();
@@ -371,7 +320,8 @@ public class  ComposeActivity extends BaseActivity implements ComposeOptionsFrag
         // Initialise the content warning editor.
         contentWarningEditor.addTextChangedListener(new TextWatcher() {
             @Override
-            public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
+            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+            }
 
             @Override
             public void onTextChanged(CharSequence s, int start, int before, int count) {
@@ -379,10 +329,11 @@ public class  ComposeActivity extends BaseActivity implements ComposeOptionsFrag
             }
 
             @Override
-            public void afterTextChanged(Editable s) {}
+            public void afterTextChanged(Editable s) {
+            }
         });
         showContentWarning(startingHideText);
-        if(startingContentWarning != null){
+        if (startingContentWarning != null) {
             contentWarningEditor.setText(startingContentWarning);
         }
 
@@ -818,7 +769,7 @@ public class  ComposeActivity extends BaseActivity implements ComposeOptionsFrag
                 ContextCompat.checkSelfPermission(this, Manifest.permission.READ_EXTERNAL_STORAGE)
                         != PackageManager.PERMISSION_GRANTED) {
             ActivityCompat.requestPermissions(this,
-                    new String[] { Manifest.permission.READ_EXTERNAL_STORAGE },
+                    new String[]{Manifest.permission.READ_EXTERNAL_STORAGE},
                     PERMISSIONS_REQUEST_READ_EXTERNAL_STORAGE);
         } else {
             initiateMediaPicking();
@@ -888,7 +839,7 @@ public class  ComposeActivity extends BaseActivity implements ComposeOptionsFrag
         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
             intent.setType("image/* video/*");
         } else {
-            String[] mimeTypes = new String[] { "image/*", "video/*" };
+            String[] mimeTypes = new String[]{"image/*", "video/*"};
             intent.setType("*/*");
             intent.putExtra(Intent.EXTRA_MIME_TYPES, mimeTypes);
         }
@@ -986,7 +937,7 @@ public class  ComposeActivity extends BaseActivity implements ComposeOptionsFrag
     }
 
     private void removeAllMediaFromQueue() {
-        for (Iterator<QueuedMedia> it = mediaQueued.iterator(); it.hasNext();) {
+        for (Iterator<QueuedMedia> it = mediaQueued.iterator(); it.hasNext(); ) {
             QueuedMedia item = it.next();
             it.remove();
             removeMediaFromQueue(item);
@@ -1016,32 +967,6 @@ public class  ComposeActivity extends BaseActivity implements ComposeOptionsFrag
         removeMediaFromQueue(item);
     }
 
-    private static String randomAlphanumericString(int count) {
-        char[] chars = new char[count];
-        Random random = new Random();
-        final String POSSIBLE_CHARS = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
-        for (int i = 0; i < count; i++) {
-            chars[i] = POSSIBLE_CHARS.charAt(random.nextInt(POSSIBLE_CHARS.length()));
-        }
-        return new String(chars);
-    }
-
-    @Nullable
-    private static byte[] inputStreamGetBytes(InputStream stream) {
-        ByteArrayOutputStream buffer = new ByteArrayOutputStream();
-        int read;
-        byte[] data = new byte[16384];
-        try {
-            while ((read = stream.read(data, 0, data.length)) != -1) {
-                buffer.write(data, 0, read);
-            }
-            buffer.flush();
-        } catch (IOException e) {
-            return null;
-        }
-        return buffer.toByteArray();
-    }
-
     private void uploadMedia(final QueuedMedia item) {
         item.readyStage = QueuedMedia.ReadyStage.UPLOADING;
 
@@ -1136,20 +1061,6 @@ public class  ComposeActivity extends BaseActivity implements ComposeOptionsFrag
         }
     }
 
-    private static long getMediaSize(ContentResolver contentResolver, Uri uri) {
-        long mediaSize;
-        Cursor cursor = contentResolver.query(uri, null, null, null, null);
-        if (cursor != null) {
-            int sizeIndex = cursor.getColumnIndex(OpenableColumns.SIZE);
-            cursor.moveToFirst();
-            mediaSize = cursor.getLong(sizeIndex);
-            cursor.close();
-        } else {
-            mediaSize = MEDIA_SIZE_UNKNOWN;
-        }
-        return mediaSize;
-    }
-
     @Override
     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
         super.onActivityResult(requestCode, resultCode, data);
@@ -1228,12 +1139,12 @@ public class  ComposeActivity extends BaseActivity implements ComposeOptionsFrag
     void showMarkSensitive(boolean show) {
         showMarkSensitive = show;
 
-        if(!showMarkSensitive) {
+        if (!showMarkSensitive) {
             statusMarkSensitive = false;
             nsfwBtn.setTextColor(ThemeUtils.getColor(this, R.attr.compose_nsfw_button_color));
         }
 
-        if(show) {
+        if (show) {
             nsfwBtn.setVisibility(View.VISIBLE);
         } else {
             nsfwBtn.setVisibility(View.GONE);
@@ -1260,4 +1171,121 @@ public class  ComposeActivity extends BaseActivity implements ComposeOptionsFrag
 
         return super.onOptionsItemSelected(item);
     }
+
+    @Override
+    public void onReceiveHeaderInfo(ParserUtils.HeaderInfo headerInfo) {
+        if (!TextUtils.isEmpty(headerInfo.title)) {
+            cleanBaseUrl(headerInfo);
+            textEditor.append(headerInfo.title);
+            textEditor.append(carriageReturn);
+            textEditor.append(headerInfo.baseUrl);
+        }
+        if (!TextUtils.isEmpty(headerInfo.image)) {
+            Picasso.with(this).load(headerInfo.image).into(MediaUtils.picassoImageTarget(getApplicationContext(), new MediaUtils.MediaListener() {
+                @Override
+                public void onCallback(final Uri headerInfo) {
+                    if (headerInfo != null) {
+                        runOnUiThread(new Runnable() {
+                            @Override
+                            public void run() {
+                                long mediaSize = getMediaSize(getContentResolver(), headerInfo);
+                                pickMedia(headerInfo, mediaSize);
+                            }
+                        });
+                    }
+                }
+            }));
+        }
+    }
+
+    // remove the precedent paste from the edit text
+    private void cleanBaseUrl(ParserUtils.HeaderInfo headerInfo) {
+        int lengthBaseUrl = headerInfo.baseUrl.length();
+        int total = textEditor.getText().length();
+        int indexSubString = total - lengthBaseUrl;
+        String text = textEditor.getText().toString();
+        text = text.substring(0, indexSubString);
+        textEditor.setText(text);
+    }
+
+    @Override
+    public void onErrorHeaderInfo() {
+        displayTransientError(R.string.error_generic);
+    }
+
+    private static class QueuedMedia {
+        Type type;
+        ImageView preview;
+        Uri uri;
+        String id;
+        Call<Media> uploadRequest;
+        URLSpan uploadUrl;
+        ReadyStage readyStage;
+        byte[] content;
+        long mediaSize;
+
+        QueuedMedia(Type type, Uri uri, ImageView preview, long mediaSize) {
+            this.type = type;
+            this.uri = uri;
+            this.preview = preview;
+            this.mediaSize = mediaSize;
+        }
+
+        enum Type {
+            IMAGE,
+            VIDEO
+        }
+
+        enum ReadyStage {
+            DOWNSIZING,
+            UPLOADING
+        }
+    }
+
+    /**
+     * This saves enough information to re-enqueue an attachment when restoring the activity.
+     */
+    private static class SavedQueuedMedia implements Parcelable {
+        public static final Parcelable.Creator<SavedQueuedMedia> CREATOR
+                = new Parcelable.Creator<SavedQueuedMedia>() {
+            public SavedQueuedMedia createFromParcel(Parcel in) {
+                return new SavedQueuedMedia(in);
+            }
+
+            public SavedQueuedMedia[] newArray(int size) {
+                return new SavedQueuedMedia[size];
+            }
+        };
+        QueuedMedia.Type type;
+        Uri uri;
+        Bitmap preview;
+        long mediaSize;
+
+        SavedQueuedMedia(QueuedMedia.Type type, Uri uri, ImageView view, long mediaSize) {
+            this.type = type;
+            this.uri = uri;
+            this.preview = ((BitmapDrawable) view.getDrawable()).getBitmap();
+            this.mediaSize = mediaSize;
+        }
+
+        SavedQueuedMedia(Parcel parcel) {
+            type = (QueuedMedia.Type) parcel.readSerializable();
+            uri = parcel.readParcelable(Uri.class.getClassLoader());
+            preview = parcel.readParcelable(Bitmap.class.getClassLoader());
+            mediaSize = parcel.readLong();
+        }
+
+        @Override
+        public int describeContents() {
+            return 0;
+        }
+
+        @Override
+        public void writeToParcel(Parcel dest, int flags) {
+            dest.writeSerializable(type);
+            dest.writeParcelable(uri, flags);
+            dest.writeParcelable(preview, flags);
+            dest.writeLong(mediaSize);
+        }
+    }
 }