QtQuick::TextInput clarify ImhSensitiveData behaviour on Android IMEs

Add information about Qt.ImhSensitiveData use on Android and that it
may be interpreted by some Android IMEs as a “password‑like” variation.
Those keyboards can disable predictive input and, in some implementations,
restrict available characters to Latin/ASCII.

Task-number: QTBUG-143245
Pick-to: 6.8
Change-Id: I2912600061c4fd0af5556fed4a17cfcb0e3dca8a
Reviewed-by: Assam Boudjelthia <assam.boudjelthia@qt.io>
(cherry picked from commit 1a1fc239bc944b9bdbfa3d7d78f15d17b361ac0f)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
(cherry picked from commit 5e9f28262e58fb09f6bfdb42a7ee90aa820a60a8)

1 files changed, 7 insertions, 0 deletions

diff --git a/src/quick/items/qquicktextinput.cpp b/src/quick/items/qquicktextinput.cpp
index 78454199b3..61c787698e 100644
--- a/src/quick/items/qquicktextinput.cpp
+++ b/src/quick/items/qquicktextinput.cpp
@@ -1325,8 +1325,15 @@ void QQuickTextInput::setEchoMode(QQuickTextInput::EchoMode echo)
     Flags that alter behaviour are:
 
     \value Qt.ImhHiddenText         Characters should be hidden, as is typically used when entering passwords.
+
+                                    Note that Android IMEs deliberately only
+                                    allow Latin/ASCII character input for password fields.
     \value Qt.ImhSensitiveData      Typed text should not be stored by the active input method
                                     in any persistent storage like predictive user dictionary.
+
+                                    Note that the Qt Framework treats this as a visible password
+                                    and in this case Android IMEs deliberately only
+                                    allow Latin/ASCII character input.
     \value Qt.ImhNoAutoUppercase    The input method should not try to automatically switch to
                                     upper case when a sentence ends.
     \value Qt.ImhPreferNumbers      Numbers are preferred (but not required).