2ef20fb36d
This adds a deletion service to delete files in the Downloads folder. All of the files there are collected and offered to the user to delete. Bug: 28621781 Change-Id: I94431f9abc3a0afa2d07dbab763312c09e830aef
118 lines
3.9 KiB
Java
118 lines
3.9 KiB
Java
/*
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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");
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* you may not use this file except in compliance with the License.
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* 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
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings;
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import android.content.Context;
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import android.content.res.Resources;
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import android.graphics.drawable.Drawable;
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import android.support.v7.preference.Preference;
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import android.support.v7.preference.Preference.OnPreferenceChangeListener;
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import android.support.v7.preference.CheckBoxPreference;
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import android.support.v7.preference.PreferenceViewHolder;
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import android.util.AttributeSet;
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import android.util.TypedValue;
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import android.text.format.Formatter;
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import android.widget.TextView;
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import com.android.settings.deletionhelper.DeletionType;
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/**
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* Preference to handle the deletion of various data types in the Deletion Helper.
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*/
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public abstract class DeletionPreference extends CheckBoxPreference implements
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DeletionType.FreeableChangedListener, OnPreferenceChangeListener {
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private DeletionType.FreeableChangedListener mListener;
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private boolean mChecked;
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private long mFreeableBytes;
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private int mFreeableItems;
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private DeletionType mDeletionService;
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public DeletionPreference(Context context, AttributeSet attrs) {
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super(context, attrs);
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setOnPreferenceChangeListener(this);
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}
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@Override
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public void onBindViewHolder(PreferenceViewHolder holder) {
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super.onBindViewHolder(holder);
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final TextView titleView = (TextView) holder.findViewById(android.R.id.title);
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if (titleView != null) {
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titleView.setTextColor(getTintColor(getContext()));
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}
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}
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/**
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* Returns the number of bytes which can be cleared by the deletion service.
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* @return The number of bytes.
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*/
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public long getFreeableBytes() {
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return mChecked ? mFreeableBytes : 0;
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}
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/**
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* Register a listener to be called back on when the freeable bytes have changed.
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* @param listener The callback listener.
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*/
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public void registerFreeableChangedListener(DeletionType.FreeableChangedListener listener) {
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mListener = listener;
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}
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/**
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* Registers a deletion service to update the preference's information.
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* @param deletionService A photo/video deletion service.
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*/
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public void registerDeletionService(DeletionType deletionService) {
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mDeletionService = deletionService;
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if (mDeletionService != null) {
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mDeletionService.registerFreeableChangedListener(this);
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}
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}
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/**
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* Returns the deletion service powering the preference.
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* @return The deletion service.
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*/
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public DeletionType getDeletionService() {
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return mDeletionService;
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}
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@Override
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public void onFreeableChanged(int numItems, long freeableBytes) {
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mFreeableItems = numItems;
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mFreeableBytes = freeableBytes;
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maybeUpdateListener();
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}
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@Override
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public boolean onPreferenceChange(Preference preference, Object newValue) {
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mChecked = (boolean) newValue;
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maybeUpdateListener();
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return true;
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}
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private int getTintColor(Context context) {
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TypedValue value = new TypedValue();
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context.getTheme().resolveAttribute(android.R.attr.colorAccent, value, true);
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return context.getColor(value.resourceId);
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}
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private void maybeUpdateListener() {
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if (mListener != null) {
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mListener.onFreeableChanged(mFreeableItems, getFreeableBytes());
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}
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}
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}
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