[orca] Mouse review: Don't spew giant text blobs at the user

[Joanmarie Diggs <joanied src gnome org>]

commit 364d84dbd2d09da50ea722ef4a6940c591c6bd45
Author: Joanmarie Diggs <jdiggs igalia com>
Date:   Mon Oct 28 20:03:45 2019 -0400

    Mouse review: Don't spew giant text blobs at the user
    
    Some authors write content with very textful divs whose functional
    paragraphs are created by the insertion of br elements. This is why
    we cannot have nice things. For the time being, just present the line
    under the mouse rather than speak this entire text blob at once.

 src/orca/mouse_review.py     |  2 ++
 src/orca/script_utilities.py | 12 ++++++++++++
 2 files changed, 14 insertions(+)
---
diff --git a/src/orca/mouse_review.py b/src/orca/mouse_review.py
index b6653e813..6b23b8635 100644
--- a/src/orca/mouse_review.py
+++ b/src/orca/mouse_review.py
@@ -535,6 +535,8 @@ class MouseReviewer:
             boundary = pyatspi.TEXT_BOUNDARY_LINE_START
         elif obj and obj.getState().contains(pyatspi.STATE_SELECTABLE):
             boundary = pyatspi.TEXT_BOUNDARY_LINE_START
+        elif script.utilities.isMultiParagraphObject(obj):
+            boundary = pyatspi.TEXT_BOUNDARY_LINE_START
 
         new = _ItemContext(pX, pY, obj, boundary, window, script)
         if new.present(self._currentMouseOver):
diff --git a/src/orca/script_utilities.py b/src/orca/script_utilities.py
index fe0d555c4..11b57a03b 100644
--- a/src/orca/script_utilities.py
+++ b/src/orca/script_utilities.py
@@ -4207,6 +4207,18 @@ class Utilities:
     def _adjustPointForObj(self, obj, x, y, coordType):
         return x, y
 
+    def isMultiParagraphObject(self, obj):
+        if not obj:
+            return False
+
+        if "Text" not in pyatspi.listInterfaces(obj):
+            return False
+
+        text = obj.queryText()
+        string = text.getText(0, -1)
+        chunks = list(filter(lambda x: x.strip(), string.split("\n\n")))
+        return len(chunks) > 1
+
     def textAtPoint(self, obj, x, y, coordType=None, boundary=None):
         text = self.queryNonEmptyText(obj)
         if not text: