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/*
* Copyright (C) 2016 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.dialer.app.calllog;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.android.dialer.app.R;
import com.android.dialer.app.alert.AlertManager;
import com.android.dialer.common.Assert;
/** Manages "alerts" to be shown at the top of an call log to gain the user's attention. */
public class CallLogAlertManager implements AlertManager {
private final CallLogAdapter adapter;
private final View view;
private final LayoutInflater inflater;
private final ViewGroup parent;
private final ViewGroup container;
public CallLogAlertManager(CallLogAdapter adapter, LayoutInflater inflater, ViewGroup parent) {
this.adapter = adapter;
this.inflater = inflater;
this.parent = parent;
view = inflater.inflate(R.layout.call_log_alert_item, parent, false);
container = (ViewGroup) view.findViewById(R.id.container);
}
@Override
public View inflate(int layoutId) {
return inflater.inflate(layoutId, container, false);
}
public RecyclerView.ViewHolder createViewHolder(ViewGroup parent) {
Assert.checkArgument(
parent == this.parent,
"createViewHolder should be called with the same parent in constructor");
return new AlertViewHolder(view);
}
public boolean isEmpty() {
return container.getChildCount() == 0;
}
public boolean contains(View view) {
return container.indexOfChild(view) != -1;
}
@Override
public void clear() {
container.removeAllViews();
adapter.notifyItemRemoved(CallLogAdapter.ALERT_POSITION);
}
@Override
public void add(View view) {
if (contains(view)) {
return;
}
container.addView(view);
if (container.getChildCount() == 1) {
// Was empty before
adapter.notifyItemInserted(CallLogAdapter.ALERT_POSITION);
}
}
/**
* Does nothing. The view this ViewHolder show is directly managed by {@link CallLogAlertManager}
*/
private static class AlertViewHolder extends RecyclerView.ViewHolder {
private AlertViewHolder(View view) {
super(view);
}
}
}
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