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      1 /*
      2  * Copyright (C) 2016 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.documentsui.sidebar;
     18 
     19 import android.annotation.Nullable;
     20 import android.content.Context;
     21 import android.provider.DocumentsProvider;
     22 import android.text.TextUtils;
     23 import android.text.format.Formatter;
     24 import android.view.DragEvent;
     25 import android.view.Menu;
     26 import android.view.MenuInflater;
     27 import android.view.View;
     28 import android.view.View.OnClickListener;
     29 import android.widget.ImageView;
     30 import android.widget.TextView;
     31 
     32 import com.android.documentsui.ActionHandler;
     33 import com.android.documentsui.MenuManager;
     34 import com.android.documentsui.R;
     35 import com.android.documentsui.base.DocumentInfo;
     36 import com.android.documentsui.base.RootInfo;
     37 
     38 /**
     39  * An {@link Item} for each root provided by {@link DocumentsProvider}s.
     40  */
     41 class RootItem extends Item {
     42     private static final String STRING_ID_FORMAT = "RootItem{%s/%s}";
     43 
     44     public final RootInfo root;
     45     public @Nullable DocumentInfo docInfo;
     46 
     47     private final ActionHandler mActionHandler;
     48 
     49     public RootItem(RootInfo root, ActionHandler actionHandler) {
     50         super(R.layout.item_root, getStringId(root));
     51         this.root = root;
     52         mActionHandler = actionHandler;
     53     }
     54 
     55     private static String getStringId(RootInfo root) {
     56         // Empty URI authority is invalid, so we can use empty string if root.authority is null.
     57         // Directly passing null to String.format() will write "null" which can be a valid URI
     58         // authority.
     59         String authority = (root.authority == null ? "" : root.authority);
     60         return String.format(STRING_ID_FORMAT, authority, root.rootId);
     61     }
     62 
     63     @Override
     64     public void bindView(View convertView) {
     65         final ImageView icon = (ImageView) convertView.findViewById(android.R.id.icon);
     66         final TextView title = (TextView) convertView.findViewById(android.R.id.title);
     67         final TextView summary = (TextView) convertView.findViewById(android.R.id.summary);
     68         final ImageView ejectIcon = (ImageView) convertView.findViewById(R.id.eject_icon);
     69 
     70         final Context context = convertView.getContext();
     71         icon.setImageDrawable(root.loadDrawerIcon(context));
     72         title.setText(root.title);
     73 
     74         if (root.supportsEject()) {
     75             ejectIcon.setVisibility(View.VISIBLE);
     76             ejectIcon.setImageDrawable(root.loadEjectIcon(context));
     77             ejectIcon.setOnClickListener(new OnClickListener() {
     78                 @Override
     79                 public void onClick(View unmountIcon) {
     80                     RootsFragment.ejectClicked(unmountIcon, root, mActionHandler);
     81                 }
     82             });
     83         } else {
     84             ejectIcon.setVisibility(View.GONE);
     85             ejectIcon.setOnClickListener(null);
     86         }
     87         // Show available space if no summary
     88         String summaryText = root.summary;
     89         if (TextUtils.isEmpty(summaryText) && root.availableBytes >= 0) {
     90             summaryText = context.getString(R.string.root_available_bytes,
     91                     Formatter.formatFileSize(context, root.availableBytes));
     92         }
     93 
     94         summary.setText(summaryText);
     95         summary.setVisibility(TextUtils.isEmpty(summaryText) ? View.GONE : View.VISIBLE);
     96     }
     97 
     98     @Override
     99     boolean isDropTarget() {
    100         return true;
    101     }
    102 
    103     @Override
    104     void open() {
    105         mActionHandler.openRoot(root);
    106     }
    107 
    108     @Override
    109     boolean dropOn(DragEvent event) {
    110         return mActionHandler.dropOn(event, root);
    111     }
    112 
    113     @Override
    114     void createContextMenu(Menu menu, MenuInflater inflater, MenuManager menuManager) {
    115         inflater.inflate(R.menu.root_context_menu, menu);
    116         menuManager.updateRootContextMenu(menu, root, docInfo);
    117     }
    118 }
    119