summaryrefslogtreecommitdiffstats
path: root/packages/DocumentsUI/src/com/android/documentsui/RecentsCreateFragment.java
blob: 3447a51aa7841159581685a28a51329922c046a7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
/*
 * Copyright (C) 2013 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.documentsui;

import static com.android.documentsui.DocumentsActivity.TAG;

import android.app.Fragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.app.LoaderManager.LoaderCallbacks;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Loader;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.os.CancellationSignal;
import android.provider.DocumentsContract.DocumentRoot;
import android.text.TextUtils.TruncateAt;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;

import com.android.documentsui.model.DocumentStack;
import com.google.android.collect.Lists;

import libcore.io.IoUtils;

import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.List;

/**
 * Display directories where recent creates took place.
 */
public class RecentsCreateFragment extends Fragment {

    private ListView mListView;

    private DocumentStackAdapter mAdapter;
    private LoaderCallbacks<List<DocumentStack>> mCallbacks;

    private static final int LOADER_RECENTS = 3;

    public static void show(FragmentManager fm) {
        final RecentsCreateFragment fragment = new RecentsCreateFragment();
        final FragmentTransaction ft = fm.beginTransaction();
        ft.replace(R.id.container_directory, fragment);
        ft.commitAllowingStateLoss();
    }

    @Override
    public View onCreateView(
            LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        final Context context = inflater.getContext();

        final View view = inflater.inflate(R.layout.fragment_directory, container, false);

        mListView = (ListView) view.findViewById(R.id.list);
        mListView.setOnItemClickListener(mItemListener);

        mAdapter = new DocumentStackAdapter();
        mListView.setAdapter(mAdapter);

        mCallbacks = new LoaderCallbacks<List<DocumentStack>>() {
            @Override
            public Loader<List<DocumentStack>> onCreateLoader(int id, Bundle args) {
                return new RecentsCreateLoader(context);
            }

            @Override
            public void onLoadFinished(
                    Loader<List<DocumentStack>> loader, List<DocumentStack> data) {
                mAdapter.swapStacks(data);
            }

            @Override
            public void onLoaderReset(Loader<List<DocumentStack>> loader) {
                mAdapter.swapStacks(null);
            }
        };

        return view;
    }

    @Override
    public void onStart() {
        super.onStart();
        getLoaderManager().restartLoader(LOADER_RECENTS, getArguments(), mCallbacks);
    }

    @Override
    public void onStop() {
        super.onStop();
        getLoaderManager().destroyLoader(LOADER_RECENTS);
    }

    private OnItemClickListener mItemListener = new OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            final DocumentStack stack = mAdapter.getItem(position);
            ((DocumentsActivity) getActivity()).onStackPicked(stack);
        }
    };

    public static class RecentsCreateLoader extends UriDerivativeLoader<Uri, List<DocumentStack>> {
        public RecentsCreateLoader(Context context) {
            super(context, RecentsProvider.buildRecentCreate());
        }

        @Override
        public List<DocumentStack> loadInBackground(Uri uri, CancellationSignal signal) {
            final ArrayList<DocumentStack> result = Lists.newArrayList();

            final ContentResolver resolver = getContext().getContentResolver();
            final Cursor cursor = resolver.query(
                    uri, null, null, null, RecentsProvider.COL_TIMESTAMP + " DESC", signal);
            try {
                while (cursor != null && cursor.moveToNext()) {
                    final String rawStack = cursor.getString(
                            cursor.getColumnIndex(RecentsProvider.COL_PATH));
                    try {
                        final DocumentStack stack = DocumentStack.deserialize(resolver, rawStack);
                        result.add(stack);
                    } catch (FileNotFoundException e) {
                        Log.w(TAG, "Failed to resolve stack: " + e);
                    }
                }
            } finally {
                IoUtils.closeQuietly(cursor);
            }

            return result;
        }
    }

    private class DocumentStackAdapter extends BaseAdapter {
        private List<DocumentStack> mStacks;

        public DocumentStackAdapter() {
        }

        public void swapStacks(List<DocumentStack> stacks) {
            mStacks = stacks;
            notifyDataSetChanged();
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            final Context context = parent.getContext();
            final RootsCache roots = DocumentsApplication.getRootsCache(context);

            if (convertView == null) {
                final LayoutInflater inflater = LayoutInflater.from(context);
                convertView = inflater.inflate(R.layout.item_doc_list, parent, false);
            }

            final ImageView icon = (ImageView) convertView.findViewById(android.R.id.icon);
            final TextView title = (TextView) convertView.findViewById(android.R.id.title);
            final View summaryList = convertView.findViewById(R.id.summary_list);

            final DocumentStack stack = getItem(position);
            final DocumentRoot root = stack.getRoot(roots);
            icon.setImageDrawable(root.loadIcon(context));

            final StringBuilder builder = new StringBuilder();
            for (int i = stack.size() - 1; i >= 0; i--) {
                builder.append(stack.get(i).displayName);
                if (i > 0) {
                    builder.append(" \u232a ");
                }
            }
            title.setText(builder.toString());
            title.setEllipsize(TruncateAt.MIDDLE);

            summaryList.setVisibility(View.GONE);

            return convertView;
        }

        @Override
        public int getCount() {
            return mStacks != null ? mStacks.size() : 0;
        }

        @Override
        public DocumentStack getItem(int position) {
            return mStacks.get(position);
        }

        @Override
        public long getItemId(int position) {
            return getItem(position).hashCode();
        }
    }
}