allow to edit outgoing text messages

src/main/java/org/thoughtcrime/securesms/ConversationActivity.java

@@ -189,6 +189,7 @@ public class ConversationActivity extends PassphraseRequiredActionBarActivity
   private boolean    isDefaultSms             = true;
   private boolean    isSecurityInitialized    = false;
   private boolean successfulForwardingAttempt = false;
+  private boolean    isEditing = false;
 
   @Override
   protected void onCreate(Bundle state, boolean ready) {
@@ -489,13 +490,6 @@ public class ConversationActivity extends PassphraseRequiredActionBarActivity
       Log.e(TAG, "cannot set up in-chat-search: ", e);
     }
 
-    if (!dcChat.canSend()) {
-      MenuItem attachItem =  menu.findItem(R.id.menu_add_attachment);
-      if (attachItem!=null) {
-        attachItem.setVisible(false);
-      }
-    }
-
     super.onPrepareOptionsMenu(menu);
     return true;
   }
@@ -504,10 +498,7 @@ public class ConversationActivity extends PassphraseRequiredActionBarActivity
   public boolean onOptionsItemSelected(MenuItem item) {
     super.onOptionsItemSelected(item);
     int itemId = item.getItemId();
-    if (itemId == R.id.menu_add_attachment) {
-      handleAddAttachment();
-      return true;
-    } else if (itemId == R.id.menu_leave) {
+    if (itemId == R.id.menu_leave) {
       handleLeaveGroup();
       return true;
     } else if (itemId == R.id.menu_archive_chat) {
@@ -731,6 +722,7 @@ public class ConversationActivity extends PassphraseRequiredActionBarActivity
    * @return
    */
   private ListenableFuture<Boolean> initializeDraft() {
+    isEditing = false;
     final SettableFuture<Boolean> future = new SettableFuture<>();
     DcMsg draft = dcContext.getDraft(chatId);
     final String sharedText = RelayUtil.getSharedText(this);
@@ -1016,6 +1008,7 @@ public class ConversationActivity extends PassphraseRequiredActionBarActivity
     DcMsg msg = null;
     Optional<QuoteModel> quote = inputPanel.getQuote();
     Integer recompress = 0;
+    boolean editing = isEditing;
 
     // for a quick ui feedback, we clear the related controls immediately on sending messages.
     // for drafts, however, we do not change the controls, the activity may be resumed.
@@ -1024,6 +1017,18 @@ public class ConversationActivity extends PassphraseRequiredActionBarActivity
       inputPanel.clearQuote();
     }
 
+    if (editing) {
+      int msgId = quote.get().getQuotedMsg().getId();
+      Util.runOnAnyBackgroundThread(() -> {
+        if (action == ACTION_SEND_OUT) {
+          dcContext.sendEditRequest(msgId, body);
+        } else {
+          dcContext.setDraft(chatId, null);
+        }
+      });
+      return future;
+    }
+
     if(slideDeck!=null) {
 
       if (action==ACTION_SEND_OUT) {
@@ -1162,7 +1167,7 @@ public class ConversationActivity extends PassphraseRequiredActionBarActivity
       return;
     }
 
-    if (composeText.getText().length() == 0 && !attachmentManager.isAttachmentPresent()) {
+    if (!isEditing && composeText.getText().length() == 0 && !attachmentManager.isAttachmentPresent()) {
       buttonToggle.display(attachButton);
       quickAttachmentToggle.show();
     } else {
@@ -1280,9 +1285,16 @@ public class ConversationActivity extends PassphraseRequiredActionBarActivity
     }
   }
 
+  @Override
+  public void onQuoteDismissed() {
+    isEditing = false;
+    composeText.setText("");
+  }
+
   // media selected by the system keyboard
   @Override
   public void onMediaSelected(@NonNull Uri uri, String contentType) {
+    if (isEditing) return;
     if (MediaUtil.isImageType(contentType)) {
       sendSticker(uri, contentType);
     } else if (MediaUtil.isVideoType(contentType)) {
@@ -1433,6 +1445,25 @@ public class ConversationActivity extends PassphraseRequiredActionBarActivity
     inputPanel.clickOnComposeInput();
   }
 
+  @Override
+  public void handleEditMessage(DcMsg msg) {
+    isEditing = true;
+    Recipient author = new Recipient(this, dcContext.getContact(msg.getFromId()));
+
+    SlideDeck slideDeck = new SlideDeck();
+    String text = msg.getSummarytext(500);
+
+    inputPanel.setQuote(GlideApp.with(this),
+            msg,
+            msg.getTimestamp(),
+            author,
+            text,
+            slideDeck);
+
+    setDraftText(msg.getText());
+    inputPanel.clickOnComposeInput();
+  }
+
   @Override
   public void onAttachmentChanged() {
     handleSecurityChange(isSecureText, isDefaultSms);

src/main/java/org/thoughtcrime/securesms/ConversationFragment.java

@@ -324,6 +324,7 @@ public class ConversationFragment extends MessageSelectorFragment
             menu.findItem(R.id.menu_context_details).setVisible(false);
             menu.findItem(R.id.menu_context_share).setVisible(false);
             menu.findItem(R.id.menu_context_reply).setVisible(false);
+            menu.findItem(R.id.menu_context_edit).setVisible(false);
             menu.findItem(R.id.menu_context_reply_privately).setVisible(false);
             menu.findItem(R.id.menu_add_to_home_screen).setVisible(false);
         } else {
@@ -333,6 +334,8 @@ public class ConversationFragment extends MessageSelectorFragment
             menu.findItem(R.id.menu_context_share).setVisible(messageRecord.hasFile());
             boolean canReply = canReplyToMsg(messageRecord);
             menu.findItem(R.id.menu_context_reply).setVisible(chat.canSend() && canReply);
+            boolean canEdit = canEditMsg(messageRecord);
+            menu.findItem(R.id.menu_context_edit).setVisible(chat.canSend() && canEdit);
             boolean showReplyPrivately = chat.isMultiUser() && !messageRecord.isOutgoing() && canReply;
             menu.findItem(R.id.menu_context_reply_privately).setVisible(showReplyPrivately);
             menu.findItem(R.id.menu_add_to_home_screen).setVisible(messageRecord.getType() == DcMsg.DC_MSG_WEBXDC);
@@ -361,6 +364,10 @@ public class ConversationFragment extends MessageSelectorFragment
         return !dcMsg.isInfo() && dcMsg.getType() != DcMsg.DC_MSG_VIDEOCHAT_INVITATION;
     }
 
+    static boolean canEditMsg(DcMsg dcMsg) {
+        return dcMsg.isOutgoing() && !dcMsg.isInfo() && dcMsg.getType() == DcMsg.DC_MSG_TEXT;
+    }
+
     public void handleClearChat() {
         handleDeleteMessages((int) chatId, getListAdapter().getMessageIds());
     }
@@ -461,6 +468,16 @@ public class ConversationFragment extends MessageSelectorFragment
         listener.handleReplyMessage(message);
     }
 
+    @SuppressLint("RestrictedApi")
+    private void handleEditMessage(final DcMsg message) {
+        if (getActivity() != null) {
+            //noinspection ConstantConditions
+            ((AppCompatActivity) getActivity()).getSupportActionBar().collapseActionView();
+        }
+
+        listener.handleEditMessage(message);
+    }
+
     private void handleReplyMessagePrivately(final DcMsg msg) {
 
         if (getActivity() != null) {
@@ -591,6 +608,7 @@ public class ConversationFragment extends MessageSelectorFragment
 
     public interface ConversationFragmentListener {
         void handleReplyMessage(DcMsg messageRecord);
+        void handleEditMessage(DcMsg messageRecord);
     }
 
     private class ConversationScrollListener extends OnScrollListener {
@@ -958,6 +976,10 @@ public class ConversationFragment extends MessageSelectorFragment
             handleReplyMessage(getSelectedMessageRecord(getListAdapter().getSelectedItems()));
             actionMode.finish();
             return true;
+          } else if (itemId == R.id.menu_context_edit) {
+            handleEditMessage(getSelectedMessageRecord(getListAdapter().getSelectedItems()));
+            actionMode.finish();
+            return true;
           } else if (itemId == R.id.menu_context_reply_privately) {
             handleReplyMessagePrivately(getSelectedMessageRecord(getListAdapter().getSelectedItems()));
             return true;

src/main/java/org/thoughtcrime/securesms/components/InputPanel.java

@@ -141,6 +141,7 @@ public class InputPanel extends ConstraintLayout
 
   public void clearQuoteWithoutAnimation() {
     quoteView.dismiss();
+    if (listener != null) listener.onQuoteDismissed();
   }
 
   public void clearQuote() {
@@ -152,6 +153,7 @@ public class InputPanel extends ConstraintLayout
       @Override
       public void onAnimationEnd(@NonNull Animator animation) {
         quoteView.dismiss();
+        if (listener != null) listener.onQuoteDismissed();
       }
     });
 
@@ -329,6 +331,7 @@ public class InputPanel extends ConstraintLayout
     void onRecorderCanceled();
     void onRecorderPermissionRequired();
     void onEmojiToggle();
+    void onQuoteDismissed();
   }
 
   private static class SlideToCancel {

src/main/res/menu/conversation.xml

@@ -41,9 +41,6 @@
 
     <item android:title="@string/menu_more_options">
         <menu>
-            <item android:title="@string/menu_add_attachment"
-                android:id="@+id/menu_add_attachment" />
-
             <item android:id="@+id/menu_leave"
                 android:visible="false"
                 android:title="@string/menu_leave_group"/>

src/main/res/menu/conversation_context.xml

@@ -44,6 +44,10 @@
         android:id="@+id/menu_context_reply_privately"
         app:showAsAction="never" />
 
+    <item android:title="@string/global_menu_edit_desktop"
+        android:id="@+id/menu_context_edit"
+        app:showAsAction="never" />
+
     <item android:title="@string/resend"
         android:id="@+id/menu_resend"
         app:showAsAction="never" />