com.dnielfe.manager.dialogs.DirectoryInfoDialog.java Source code

Introduction

Here is the source code for com.dnielfe.manager.dialogs.DirectoryInfoDialog.java

Source

/*
 * Copyright (C) 2014 Simple Explorer
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA  02110-1301, USA.
 */

package com.dnielfe.manager.dialogs;

import org.apache.commons.io.FileUtils;
import org.jetbrains.annotations.NotNull;

import com.dnielfe.manager.Browser;
import com.dnielfe.manager.R;
import com.dnielfe.manager.SimpleExplorer;
import com.dnielfe.manager.commands.RootCommands;
import com.dnielfe.manager.utils.StatFsCompat;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;

import java.io.File;
import java.lang.ref.WeakReference;

public final class DirectoryInfoDialog extends DialogFragment {

    private static File mFile;
    private View mView;

    public Dialog onCreateDialog(final Bundle savedInstanceState) {
        final Activity activity = this.getActivity();
        mView = activity.getLayoutInflater().inflate(R.layout.dialog_directory_info, null);
        final AlertDialog.Builder builder = new AlertDialog.Builder(activity);
        builder.setTitle(R.string.dir_info);
        builder.setView(mView);
        builder.setNeutralButton(R.string.ok, null);
        return builder.create();
    }

    @Override
    public void onStart() {
        super.onStart();
        mFile = new File(Browser.mCurrentPath);
        PartitionInfoTask mTask = new PartitionInfoTask(mView);
        mTask.execute(mFile);
    }

    private static final class PartitionInfo {
        final CharSequence mPath;
        final CharSequence mPermissionText;
        final CharSequence mTotalBytesText;
        final CharSequence mBlockSizeText;
        final CharSequence mFreeBytesText;
        final CharSequence mUsedSpaceText;

        final long mTotalBytes;
        final long mBlockSize;
        final long mFreeBytes;
        final long mUsedSpace;

        private PartitionInfo(@NotNull final CharSequence path, final CharSequence permission,
                final long totalBytes, final long blockSize, final long freeBytes, final long usedSpace) {
            this.mPath = path;
            this.mPermissionText = permission;
            this.mTotalBytes = totalBytes;
            this.mBlockSize = blockSize;
            this.mFreeBytes = freeBytes;
            this.mUsedSpace = usedSpace;

            this.mTotalBytesText = FileUtils.byteCountToDisplaySize(totalBytes);
            this.mBlockSizeText = Long.toString(blockSize);
            this.mFreeBytesText = FileUtils.byteCountToDisplaySize(freeBytes);

            if (totalBytes != 0L) {
                final StringBuilder usage = new StringBuilder();
                usage.append(FileUtils.byteCountToDisplaySize(usedSpace));
                usage.append(' ');
                usage.append('(');
                usage.append(usedSpace * 100L / totalBytes);
                usage.append('%');
                usage.append(')');
                this.mUsedSpaceText = usage.toString();
            } else {
                this.mUsedSpaceText = null;
            }
        }
    }

    private static final class PartitionInfoTask extends AsyncTask<File, Void, PartitionInfo> {

        private final WeakReference<View> mViewRef;

        private PartitionInfoTask(@NotNull final View view) {
            this.mViewRef = new WeakReference<View>(view);
        }

        @NotNull
        @Override
        protected PartitionInfo doInBackground(final File... params) {
            final String path = params[0].getAbsolutePath();
            final StatFsCompat statFs = new StatFsCompat(path);
            final long valueTotal = statFs.getTotalBytes();
            final long valueAvail = statFs.getAvailableBytes();
            final long valueUsed = valueTotal - valueAvail;
            String[] permission = null;
            String perm;

            if (SimpleExplorer.rootAccess)
                permission = RootCommands.getFileProperties(params[0]);

            perm = permission != null ? permission[0] : getFilePermissions(params[0]);

            return new PartitionInfo(path, perm, valueTotal, statFs.getBlockSizeLong(), statFs.getFreeBytes(),
                    valueUsed);
        }

        @Override
        protected void onPostExecute(final @NotNull PartitionInfo partitionInfo) {
            final View view = mViewRef.get();
            if (view != null) {
                final TextView title = (TextView) view.findViewById(R.id.location);
                title.setText(partitionInfo.mPath);

                if (partitionInfo.mPermissionText.length() != 0L) {
                    final TextView perm = (TextView) view.findViewById(R.id.dir_permission);
                    perm.setText(partitionInfo.mPermissionText);
                }

                if (partitionInfo.mTotalBytes != 0L) {
                    final TextView total = (TextView) view.findViewById(R.id.total);
                    total.setText(partitionInfo.mTotalBytesText);
                }

                if (partitionInfo.mBlockSize != 0L) {
                    final TextView block = (TextView) view.findViewById(R.id.block_size);
                    block.setText(partitionInfo.mBlockSizeText);
                }

                if (partitionInfo.mFreeBytes != 0L) {
                    final TextView free = (TextView) view.findViewById(R.id.free);
                    free.setText(partitionInfo.mFreeBytesText);
                }

                if (partitionInfo.mUsedSpace != 0L) {
                    final TextView used = (TextView) view.findViewById(R.id.used);
                    used.setText(partitionInfo.mUsedSpaceText);
                }
            }
        }
    }

    // use this as alternative if no root is avaible
    private static String getFilePermissions(File file) {
        String per = "";

        per += file.isDirectory() ? "d" : "-";
        per += file.canRead() ? "r" : "-";
        per += file.canWrite() ? "w" : "-";
        per += file.canExecute() ? "x" : "-";

        return per;
    }
}