Added: Extra keys accessibility, setTextEntryKey via delegate

This makes the additional soft keys behave like soft keyboard keys (if Android
and TalkBack are recent enough). There is a setting where text entry keys may
be activated on touch up, activated on double tap, or a mix of both.

This makes the soft arrow keys easier to use, since there's less tapping.

termux-shared/src/main/java/com/termux/shared/termux/extrakeys/ExtraKeysView.java

@@ -25,6 +25,7 @@
 import android.view.View;
 import android.view.ViewConfiguration;
 import android.view.ViewGroup;
+import android.view.accessibility.AccessibilityNodeInfo;
 import android.widget.GridLayout;
 import android.widget.PopupWindow;
 
@@ -408,6 +409,19 @@ public void reload(ExtraKeysInfo extraKeysInfo, float heightPx) {
                 } else {
                     button = new MaterialButton(getContext(), null, android.R.attr.buttonBarButtonStyle);
                 }
+                button.setAccessibilityDelegate(new AccessibilityDelegate() {
+                    @Override
+                    public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfo info) {
+                        super.onInitializeAccessibilityNodeInfo(host, info);
+                        // these should funtion like soft keyboard keys;
+                        // with this flag set, they honor the TalkBack setting
+                        // of hold/release to activate, 2x tap to activate or hybrid;
+                        // assuming your Android and TalkBack are recent enough
+                        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+                            info.setTextEntryKey(true);
+                        }
+                    }
+                });
 
                 button.setText(buttonInfo.getDisplay());
                 button.setTextColor(mButtonTextColor);