diff options
Diffstat (limited to 'src/com/android/dialer/list/ContentChangedFilter.java')
-rw-r--r-- | src/com/android/dialer/list/ContentChangedFilter.java | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/src/com/android/dialer/list/ContentChangedFilter.java b/src/com/android/dialer/list/ContentChangedFilter.java new file mode 100644 index 000000000..e552aa3f0 --- /dev/null +++ b/src/com/android/dialer/list/ContentChangedFilter.java @@ -0,0 +1,40 @@ +package com.android.dialer.list; + +import android.view.View; +import android.view.View.AccessibilityDelegate; +import android.view.ViewGroup; +import android.view.accessibility.AccessibilityEvent; + +/** + * AccessibilityDelegate that will filter out TYPE_WINDOW_CONTENT_CHANGED + * Used to suppress "Showing items x of y" from firing of ListView whenever it's content changes. + * AccessibilityEvent can only be rejected at a view's parent once it is generated, + * use addToParent() to add this delegate to the parent. + */ +public class ContentChangedFilter extends AccessibilityDelegate { + //the view we don't want TYPE_WINDOW_CONTENT_CHANGED to fire. + private View mView; + + /** + * Add this delegate to the parent of @param view to filter out TYPE_WINDOW_CONTENT_CHANGED + */ + public static void addToParent(View view){ + View parent = (View) view.getParent(); + parent.setAccessibilityDelegate(new ContentChangedFilter(view)); + } + + private ContentChangedFilter(View view){ + super(); + mView = view; + } + @Override + public boolean onRequestSendAccessibilityEvent (ViewGroup host, View child, AccessibilityEvent event){ + if(child == mView){ + if(event.getEventType() == AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED){ + return false; + } + } + return super.onRequestSendAccessibilityEvent(host,child,event); + } + +} |