From 680a33e241426832e23a93bc7c9b9be8733c4f22 Mon Sep 17 00:00:00 2001 From: Mike Achtelik Date: Fri, 24 Jun 2022 16:15:26 +0200 Subject: [PATCH] Android A11Y: Add content change type to content change event This fixes a problem where the accessibility tree is not correctly updated, when using e.g. a StackView. The problem was, that sometimes when pushing items of the previous view where still selectable via TalkBack. When popping this sometimes lead to some views not being selectable because the subtree wasn't updated. To solve this, lets tell android directly that the subtree changed when invalidating a view. Fixes: QTBUG-102825 Change-Id: Ifbf8da1b95f02935b9bcffabfe821547b1128103 Reviewed-by: Assam Boudjelthia (cherry picked from commit d48ebb02fb171d0b6fe3749a28a312fc624f8b8e) Reviewed-by: Qt Cherry-pick Bot --- .../QtAccessibilityDelegate.java | 26 ++++++++++++++----- 1 file changed, 19 insertions(+), 7 deletions(-) diff --git a/src/android/jar/src/org/qtproject/qt/android/accessibility/QtAccessibilityDelegate.java b/src/android/jar/src/org/qtproject/qt/android/accessibility/QtAccessibilityDelegate.java index eed53ce7345..121d6417e6f 100644 --- a/src/android/jar/src/org/qtproject/qt/android/accessibility/QtAccessibilityDelegate.java +++ b/src/android/jar/src/org/qtproject/qt/android/accessibility/QtAccessibilityDelegate.java @@ -263,10 +263,14 @@ public class QtAccessibilityDelegate extends View.AccessibilityDelegate public boolean sendEventForVirtualViewId(int virtualViewId, int eventType) { - if ((virtualViewId == INVALID_ID) || !m_manager.isEnabled()) { - Log.w(TAG, "sendEventForVirtualViewId for invalid view"); + final AccessibilityEvent event = getEventForVirtualViewId(virtualViewId, eventType); + return sendAccessibilityEvent(event); + } + + public boolean sendAccessibilityEvent(AccessibilityEvent event) + { + if (event == null) return false; - } final ViewGroup group = (ViewGroup) m_view.getParent(); if (group == null) { @@ -274,15 +278,18 @@ public class QtAccessibilityDelegate extends View.AccessibilityDelegate return false; } - final AccessibilityEvent event; - event = getEventForVirtualViewId(virtualViewId, eventType); return group.requestSendAccessibilityEvent(m_view, event); } public void invalidateVirtualViewId(int virtualViewId) { - if (virtualViewId != INVALID_ID) - sendEventForVirtualViewId(virtualViewId, AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); + final AccessibilityEvent event = getEventForVirtualViewId(virtualViewId, AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED); + + if (event == null) + return; + + event.setContentChangeTypes(AccessibilityEvent.CONTENT_CHANGE_TYPE_SUBTREE); + sendAccessibilityEvent(event); } private void setHoveredVirtualViewId(int virtualViewId) @@ -299,6 +306,11 @@ public class QtAccessibilityDelegate extends View.AccessibilityDelegate private AccessibilityEvent getEventForVirtualViewId(int virtualViewId, int eventType) { + if ((virtualViewId == INVALID_ID) || !m_manager.isEnabled()) { + Log.w(TAG, "getEventForVirtualViewId for invalid view"); + return null; + } + final AccessibilityEvent event = AccessibilityEvent.obtain(eventType); event.setEnabled(true);