TextField does not receive live change events when spell checking or suggestions is enabled on the keyboard

[Michael Hall]

When spell checking or word suggestions are enabled, they prevent text fields from responding to text changes as they happen. For example, the search-as-you-type feature of the Unity Dash will only update it's search after a word is completed (usually adding a space to the end too).

There is an old upstream bug about this: https://bugreports.qt-project.org/browse/QTBUG-22298

In it there is reference to a feature added to Qt5 for tracking tentative, pre-commit strings in input method events: https://codereview.qt-project.org/#/c/6682/

If we can expose this property for Ubuntu.Components.TextField (either directly of via TextInput upstream) it would allow dynamic search fields to still allow spell checking and word suggestions. Otherwise the developer has to disable one to allow the other.

[Robin Burchell (viroteck)]

As I noted on the upstream bug, note that the feature was experiment (and reverted). So it would need a little more investigation into how to wrangle it back in.

[Tim Peeters (tpeeters)]

related bug: https://bugs.launchpad.net/ubuntu/+source/unity8/+bug/1350496