Use labels from pasted images as alt text

mastodon/src/main/java/org/joinmastodon/android/api/requests/statuses/UploadAttachment.java

@@ -3,6 +3,7 @@ package org.joinmastodon.android.api.requests.statuses;
 import android.database.Cursor;
 import android.net.Uri;
 import android.provider.OpenableColumns;
+import android.text.TextUtils;
 
 import org.joinmastodon.android.MastodonApp;
 import org.joinmastodon.android.api.ContentUriRequestBody;
@@ -21,15 +22,17 @@ public class UploadAttachment extends MastodonAPIRequest<Attachment>{
 	private Uri uri;
 	private ProgressListener progressListener;
 	private int maxImageSize;
+	private String description;
 
 	public UploadAttachment(Uri uri){
 		super(HttpMethod.POST, "/media", Attachment.class);
 		this.uri=uri;
 	}
 
-	public UploadAttachment(Uri uri, int maxImageSize){
+	public UploadAttachment(Uri uri, int maxImageSize, String description){
 		this(uri);
 		this.maxImageSize=maxImageSize;
+		this.description=description;
 	}
 
 	public UploadAttachment setProgressListener(ProgressListener progressListener){
@@ -39,9 +42,11 @@ public class UploadAttachment extends MastodonAPIRequest<Attachment>{
 
 	@Override
 	public RequestBody getRequestBody() throws IOException{
-		return new MultipartBody.Builder()
+		MultipartBody.Builder builder=new MultipartBody.Builder()
 				.setType(MultipartBody.FORM)
-				.addFormDataPart("file", UiUtils.getFileName(uri), maxImageSize>0 ? new ResizedImageRequestBody(uri, maxImageSize, progressListener) : new ContentUriRequestBody(uri, progressListener))
+				.addFormDataPart("file", UiUtils.getFileName(uri), maxImageSize>0 ? new ResizedImageRequestBody(uri, maxImageSize, progressListener) : new ContentUriRequestBody(uri, progressListener));
-				.build();
+		if(!TextUtils.isEmpty(description))
+			builder.addFormDataPart("description", description);
+		return builder.build();
 	}
 }

mastodon/src/main/java/org/joinmastodon/android/fragments/ComposeFragment.java

@@ -463,7 +463,7 @@ public class ComposeFragment extends ToolbarFragment implements OnBackPressedLis
 			ArrayList<Uri> mediaUris=getArguments().getParcelableArrayList("mediaAttachments");
 			if(mediaUris!=null && !mediaUris.isEmpty()){
 				for(Uri uri:mediaUris){
-					addMediaAttachment(uri);
+					addMediaAttachment(uri, null);
 				}
 			}
 		}
@@ -689,17 +689,17 @@ public class ComposeFragment extends ToolbarFragment implements OnBackPressedLis
 		if(requestCode==MEDIA_RESULT && resultCode==Activity.RESULT_OK){
 			Uri single=data.getData();
 			if(single!=null){
-				addMediaAttachment(single);
+				addMediaAttachment(single, null);
 			}else{
 				ClipData clipData=data.getClipData();
 				for(int i=0;i<clipData.getItemCount();i++){
-					addMediaAttachment(clipData.getItemAt(i).getUri());
+					addMediaAttachment(clipData.getItemAt(i).getUri(), null);
 				}
 			}
 		}
 	}
 
-	private boolean addMediaAttachment(Uri uri){
+	private boolean addMediaAttachment(Uri uri, String description){
 		if(getMediaAttachmentsCount()==MAX_ATTACHMENTS){
 			showMediaAttachmentError(getResources().getQuantityString(R.plurals.cant_add_more_than_x_attachments, MAX_ATTACHMENTS, MAX_ATTACHMENTS));
 			return false;
@@ -729,6 +729,7 @@ public class ComposeFragment extends ToolbarFragment implements OnBackPressedLis
 		pollBtn.setEnabled(false);
 		DraftMediaAttachment draft=new DraftMediaAttachment();
 		draft.uri=uri;
+		draft.description=description;
 
 		attachmentsView.addView(createMediaAttachmentView(draft));
 		allAttachments.add(draft);
@@ -810,7 +811,7 @@ public class ComposeFragment extends ToolbarFragment implements OnBackPressedLis
 		if(contentType!=null && contentType.startsWith("image/")){
 			maxSize=2_073_600; // TODO get this from instance configuration when it gets added there
 		}
-		attachment.uploadRequest=(UploadAttachment) new UploadAttachment(attachment.uri, maxSize)
+		attachment.uploadRequest=(UploadAttachment) new UploadAttachment(attachment.uri, maxSize, attachment.description)
 				.setProgressListener(new ProgressListener(){
 					@Override
 					public void onProgress(long transferred, long total){
@@ -1079,8 +1080,8 @@ public class ComposeFragment extends ToolbarFragment implements OnBackPressedLis
 	}
 
 	@Override
-	public boolean onAddMediaAttachmentFromEditText(Uri uri){
+	public boolean onAddMediaAttachmentFromEditText(Uri uri, String description){
-		return addMediaAttachment(uri);
+		return addMediaAttachment(uri, description);
 	}
 
 	private void startAutocomplete(ComposeAutocompleteSpan span){

mastodon/src/main/java/org/joinmastodon/android/ui/views/ComposeEditText.java

@@ -16,6 +16,8 @@ import android.view.inputmethod.InputConnectionWrapper;
 import android.view.inputmethod.InputContentInfo;
 import android.widget.EditText;
 
+import java.util.Objects;
+
 import androidx.annotation.RequiresApi;
 
 public class ComposeEditText extends EditText{
@@ -90,7 +92,7 @@ public class ComposeEditText extends EditText{
 			Uri uri=clip.getItemAt(i).getUri();
 			if(uri!=null){
 				processedAny=true;
-				selectionListener.onAddMediaAttachmentFromEditText(uri);
+				selectionListener.onAddMediaAttachmentFromEditText(uri, Objects.toString(clip.getItemAt(i).getText(), null));
 			}
 		}
 		return processedAny;
@@ -99,7 +101,7 @@ public class ComposeEditText extends EditText{
 	public interface SelectionListener{
 		void onSelectionChanged(int start, int end);
 		String[] onGetAllowedMediaMimeTypes();
-		boolean onAddMediaAttachmentFromEditText(Uri uri);
+		boolean onAddMediaAttachmentFromEditText(Uri uri, String description);
 	}
 
 	private class MediaAcceptingInputConnection extends InputConnectionWrapper{
@@ -114,7 +116,7 @@ public class ComposeEditText extends EditText{
 			if(contentUri==null)
 				return false;
 			inputContentInfo.requestPermission();
-			return selectionListener.onAddMediaAttachmentFromEditText(contentUri);
+			return selectionListener.onAddMediaAttachmentFromEditText(contentUri, Objects.toString(inputContentInfo.getDescription().getLabel(), null));
 		}
 	}
 }