/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software distributed under the
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* License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the specific language governing
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* permissions and limitations under the License.
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*/
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package com.android.systemui;
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import android.annotation.Nullable;
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import android.content.Context;
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import android.content.res.TypedArray;
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import android.util.AttributeSet;
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import android.util.Log;
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import android.view.View;
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import com.android.systemui.plugins.PluginListener;
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import com.android.systemui.plugins.ViewProvider;
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import com.android.systemui.shared.plugins.PluginManager;
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/**
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* Define an interface or abstract class as follows that includes the
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* version and action.
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*
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* public interface MyInterface {
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* public static final String ACTION =
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* "com.android.systemui.action.PLUGIN_MYINTERFACE";
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*
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* public static final int VERSION = 1;
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*
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* void myImportantInterface();
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* }
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*
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* Then put in a PluginInflateContainer to use and specify the interface
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* or class that will be implemented as viewType. The layout specified
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* will be used by default and whenever a plugin is not present.
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*
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* <com.android.systemui.PluginInflateContainer
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* android:id="@+id/some_id"
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* android:layout_width="match_parent"
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* android:layout_height="match_parent"
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* android:layout="@layout/my_default_component"
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* systemui:viewType="com.android.systemui.plugins.MyInterface" />
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*/
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public class PluginInflateContainer extends AutoReinflateContainer
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implements PluginListener<ViewProvider> {
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private static final String TAG = "PluginInflateContainer";
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private Class<?> mClass;
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private View mPluginView;
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public PluginInflateContainer(Context context, @Nullable AttributeSet attrs) {
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super(context, attrs);
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TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.PluginInflateContainer);
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String viewType = a.getString(R.styleable.PluginInflateContainer_viewType);
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try {
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mClass = Class.forName(viewType);
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} catch (Exception e) {
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Log.d(TAG, "Problem getting class info " + viewType, e);
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mClass = null;
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}
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}
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@Override
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protected void onAttachedToWindow() {
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super.onAttachedToWindow();
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if (mClass != null) {
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Dependency.get(PluginManager.class).addPluginListener(this, mClass);
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}
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}
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@Override
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protected void onDetachedFromWindow() {
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super.onDetachedFromWindow();
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if (mClass != null) {
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Dependency.get(PluginManager.class).removePluginListener(this);
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}
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}
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@Override
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protected void inflateLayoutImpl() {
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if (mPluginView != null) {
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addView(mPluginView);
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} else {
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super.inflateLayoutImpl();
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}
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}
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@Override
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public void onPluginConnected(ViewProvider plugin, Context context) {
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mPluginView = plugin.getView();
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inflateLayout();
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}
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@Override
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public void onPluginDisconnected(ViewProvider plugin) {
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mPluginView = null;
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inflateLayout();
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}
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}
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