Automatically hide word candidate list

This change adds support for automatically hiding word candidate list
when inactive. This feature includes the following enhancements:

- Added new settings:
  * VirtualKeyboardSettings.wordCandidateList.autoHideDelay
  * VirtualKeyboardSettings.wordCandidateList.alwaysVisible
- Automatic hiding of word candidate list when inactive and when
  autoHideDelay elapsed.
- alwaysVisible setting restores the old functionality.
- Added new signal selectionListsChanged() to input method, allowing
  the input method to dynamically allocate or deallocate selection
  lists.
- HunspellInputMethod does not allocate selection list when
  dictionary cannot be loaded, or Qt::ImhNoPredictiveText is enabled.
  Also, it will no longer use pre-edit text in this case.
- OpenWnnInputMethod does not allocate selection list if not needed.

[ChangeLog] Automatically hide word candidate list when inactive.

Change-Id: Ifa95ae8a7c47a96719ffdc2929601ff2ef9c0d2e
Reviewed-by: Gordan Markus <gordan.markus@pelagicore.com>
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/virtualkeyboard/selectionlistmodel.h b/src/virtualkeyboard/selectionlistmodel.h
index e78e64d4..47153558 100644
--- a/src/virtualkeyboard/selectionlistmodel.h
+++ b/src/virtualkeyboard/selectionlistmodel.h
@@ -44,6 +44,7 @@ class SelectionListModel : public QAbstractListModel
     Q_ENUMS(Type)
     Q_ENUMS(Role)
     Q_DECLARE_PRIVATE(SelectionListModel)
+    Q_PROPERTY(int count READ count NOTIFY countChanged)
 
     explicit SelectionListModel(QObject *parent = 0);
 
@@ -65,10 +66,13 @@ public:
     QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;
     QHash<int,QByteArray> roleNames() const;
 
+    int count() const;
+
     Q_INVOKABLE void selectItem(int index);
     Q_INVOKABLE QVariant dataAt(int index, int role = Qt::DisplayRole) const;
 
 signals:
+    void countChanged();
     void activeItemChanged(int index);
     void itemSelected(int index);