/*
* Copyright (C) 2011 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.talkback.speechrules;
import android.content.Context;
import android.support.v4.view.accessibility.AccessibilityNodeInfoCompat;
import android.view.accessibility.AccessibilityEvent;
interface NodeSpeechRule {
/**
* Determines whether this rule should process the specified node.
*
* @param node The node to filter.
* @param event The source event, may be {@code null} when called with non-source nodes.
* @return {@code true} if this rule should process the node.
*/
public boolean accept(AccessibilityNodeInfoCompat node, AccessibilityEvent event);
/**
* Processes the specified node and returns text to speak, or {@code null}
* if the node should not be spoken.
*
* @param context The parent context.
* @param node The node to process.
* @param event The source event, may be {@code null} when called with non-source nodes.
* @return A spoken description, or {@code null} if the node should not be spoken.
*/
public CharSequence format(Context context, AccessibilityNodeInfoCompat node,
AccessibilityEvent event);
}