diff options
Diffstat (limited to 'src/com/android/launcher3/accessibility/DragViewStateAnnouncer.java')
-rw-r--r-- | src/com/android/launcher3/accessibility/DragViewStateAnnouncer.java | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/src/com/android/launcher3/accessibility/DragViewStateAnnouncer.java b/src/com/android/launcher3/accessibility/DragViewStateAnnouncer.java new file mode 100644 index 000000000..b5e6194a0 --- /dev/null +++ b/src/com/android/launcher3/accessibility/DragViewStateAnnouncer.java @@ -0,0 +1,57 @@ +/* + * Copyright (C) 2015 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package com.android.launcher3.accessibility; + +import android.content.Context; +import android.view.View; +import android.view.accessibility.AccessibilityEvent; +import android.view.accessibility.AccessibilityManager; + +/** + * Periodically sends accessibility events to announce ongoing state changed. Based on the + * implementation in ProgressBar. + */ +public class DragViewStateAnnouncer implements Runnable { + + private static final int TIMEOUT_SEND_ACCESSIBILITY_EVENT = 200; + + private final View mTargetView; + + private DragViewStateAnnouncer(View view) { + mTargetView = view; + } + + public void announce(CharSequence msg) { + mTargetView.setContentDescription(msg); + mTargetView.removeCallbacks(this); + mTargetView.postDelayed(this, TIMEOUT_SEND_ACCESSIBILITY_EVENT); + } + + @Override + public void run() { + mTargetView.sendAccessibilityEvent(AccessibilityEvent.TYPE_VIEW_SELECTED); + } + + public static DragViewStateAnnouncer createFor(View v) { + if (((AccessibilityManager) v.getContext().getSystemService(Context.ACCESSIBILITY_SERVICE)) + .isEnabled()) { + return new DragViewStateAnnouncer(v); + } else { + return null; + } + } +} |