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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.picker;
     18 
     19 import static com.android.documentsui.base.State.ACTION_CREATE;
     20 import static com.android.documentsui.base.State.ACTION_GET_CONTENT;
     21 import static com.android.documentsui.base.State.ACTION_OPEN;
     22 import static com.android.documentsui.base.State.ACTION_OPEN_TREE;
     23 import static com.android.documentsui.base.State.ACTION_PICK_COPY_DESTINATION;
     24 
     25 import android.view.KeyboardShortcutGroup;
     26 import android.view.Menu;
     27 import android.view.MenuItem;
     28 
     29 import com.android.documentsui.base.State;
     30 import com.android.documentsui.queries.SearchViewManager;
     31 
     32 import java.util.List;
     33 import java.util.function.IntFunction;
     34 
     35 public final class MenuManager extends com.android.documentsui.MenuManager {
     36 
     37     public MenuManager(SearchViewManager searchManager, State displayState, DirectoryDetails dirDetails) {
     38         super(searchManager, displayState, dirDetails);
     39 
     40     }
     41 
     42     @Override
     43     public void updateKeyboardShortcutsMenu(
     44             List<KeyboardShortcutGroup> data, IntFunction<String> stringSupplier) {
     45         // None as of yet.
     46     }
     47 
     48     private boolean picking() {
     49         return mState.action == ACTION_CREATE
     50                 || mState.action == ACTION_OPEN_TREE
     51                 || mState.action == ACTION_PICK_COPY_DESTINATION;
     52     }
     53 
     54     @Override
     55     public void updateOptionMenu(Menu menu) {
     56         super.updateOptionMenu(menu);
     57         if (picking()) {
     58             // May already be hidden because the root
     59             // doesn't support search.
     60             mSearchManager.showMenu(null);
     61         }
     62     }
     63 
     64     @Override
     65     protected void updateModePicker(MenuItem grid, MenuItem list) {
     66         // No display options in recent directories
     67         if (picking() && mDirDetails.isInRecents()) {
     68             grid.setVisible(false);
     69             list.setVisible(false);
     70         } else {
     71             super.updateModePicker(grid, list);
     72         }
     73     }
     74 
     75     @Override
     76     protected void updateSelectAll(MenuItem selectAll) {
     77         boolean enabled = mState.allowMultiple;
     78         selectAll.setVisible(enabled);
     79         selectAll.setEnabled(enabled);
     80     }
     81 
     82     @Override
     83     protected void updateCreateDir(MenuItem createDir) {
     84         createDir.setVisible(picking());
     85         createDir.setEnabled(picking() && mDirDetails.canCreateDirectory());
     86     }
     87 
     88     @Override
     89     protected void updateOpenInActionMode(MenuItem open, SelectionDetails selectionDetails) {
     90         updateOpen(open, selectionDetails);
     91     }
     92 
     93     @Override
     94     protected void updateOpenInContextMenu(MenuItem open, SelectionDetails selectionDetails) {
     95         updateOpen(open, selectionDetails);
     96     }
     97 
     98     private void updateOpen(MenuItem open, SelectionDetails selectionDetails) {
     99         open.setVisible(mState.action == ACTION_GET_CONTENT
    100                 || mState.action == ACTION_OPEN);
    101         open.setEnabled(selectionDetails.size() > 0);
    102     }
    103 }
    104