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      1 /*
      2  * Copyright (C) 2015 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.contacts.list;
     18 
     19 import com.android.contacts.common.list.ContactListItemView;
     20 import com.android.contacts.common.list.DefaultContactListAdapter;
     21 
     22 import android.content.Context;
     23 import android.database.Cursor;
     24 import android.provider.ContactsContract;
     25 import android.view.View;
     26 import android.view.View.OnClickListener;
     27 import android.widget.CheckBox;
     28 
     29 import java.util.TreeSet;
     30 
     31 /**
     32  * An extension of the default contact adapter that adds checkboxes and the ability
     33  * to select multiple contacts.
     34  */
     35 public class MultiSelectEntryContactListAdapter extends DefaultContactListAdapter {
     36 
     37     private SelectedContactsListener mSelectedContactsListener;
     38     private TreeSet<Long> mSelectedContactIds = new TreeSet<Long>();
     39     private boolean mDisplayCheckBoxes;
     40 
     41     public interface SelectedContactsListener {
     42         void onSelectedContactsChanged();
     43         void onSelectedContactsChangedViaCheckBox();
     44     }
     45 
     46     public MultiSelectEntryContactListAdapter(Context context) {
     47         super(context);
     48     }
     49 
     50     public void setSelectedContactsListener(SelectedContactsListener listener) {
     51         mSelectedContactsListener = listener;
     52     }
     53 
     54     /**
     55      * Returns set of selected contacts.
     56      */
     57     public TreeSet<Long> getSelectedContactIds() {
     58         return mSelectedContactIds;
     59     }
     60 
     61     /**
     62      * Update set of selected contacts. This changes which checkboxes are set.
     63      */
     64     public void setSelectedContactIds(TreeSet<Long> selectedContactIds) {
     65         this.mSelectedContactIds = selectedContactIds;
     66         notifyDataSetChanged();
     67         if (mSelectedContactsListener != null) {
     68             mSelectedContactsListener.onSelectedContactsChanged();
     69         }
     70     }
     71 
     72     /**
     73      * Shows checkboxes beside contacts if {@param displayCheckBoxes} is {@code TRUE}.
     74      * Not guaranteed to work with all configurations of this adapter.
     75      */
     76     public void setDisplayCheckBoxes(boolean showCheckBoxes) {
     77         if (!mDisplayCheckBoxes && showCheckBoxes) {
     78             setSelectedContactIds(new TreeSet<Long>());
     79         }
     80         mDisplayCheckBoxes = showCheckBoxes;
     81         notifyDataSetChanged();
     82         if (mSelectedContactsListener != null) {
     83             mSelectedContactsListener.onSelectedContactsChanged();
     84         }
     85     }
     86 
     87     /**
     88      * Checkboxes are being displayed beside contacts.
     89      */
     90     public boolean isDisplayingCheckBoxes() {
     91         return mDisplayCheckBoxes;
     92     }
     93 
     94     /**
     95      * Toggle the checkbox beside the contact for {@param contactId}.
     96      */
     97     public void toggleSelectionOfContactId(long contactId) {
     98         if (mSelectedContactIds.contains(contactId)) {
     99             mSelectedContactIds.remove(contactId);
    100         } else {
    101             mSelectedContactIds.add(contactId);
    102         }
    103         notifyDataSetChanged();
    104         if (mSelectedContactsListener != null) {
    105             mSelectedContactsListener.onSelectedContactsChanged();
    106         }
    107     }
    108 
    109     @Override
    110     protected void bindView(View itemView, int partition, Cursor cursor, int position) {
    111         super.bindView(itemView, partition, cursor, position);
    112         final ContactListItemView view = (ContactListItemView) itemView;
    113         bindCheckBox(view, cursor, position, partition == ContactsContract.Directory.DEFAULT);
    114     }
    115 
    116     private void bindCheckBox(ContactListItemView view, Cursor cursor, int position,
    117             boolean isLocalDirectory) {
    118         // Disable clicking on the ME profile and all contacts from remote directories
    119         // when showing check boxes. We do this by telling the view to handle clicking itself.
    120         view.setClickable((position == 0 && hasProfile() || !isLocalDirectory)
    121                 && mDisplayCheckBoxes);
    122         // Only show checkboxes if mDisplayCheckBoxes is enabled. Also, never show the
    123         // checkbox for the Me profile entry and other directory contacts except local directory.
    124         if (position == 0 && hasProfile() || !mDisplayCheckBoxes || !isLocalDirectory) {
    125             view.hideCheckBox();
    126             return;
    127         }
    128         final CheckBox checkBox = view.getCheckBox();
    129         final long contactId = cursor.getLong(ContactQuery.CONTACT_ID);
    130         checkBox.setChecked(mSelectedContactIds.contains(contactId));
    131         checkBox.setTag(contactId);
    132         checkBox.setOnClickListener(mCheckBoxClickListener);
    133     }
    134 
    135     private final OnClickListener mCheckBoxClickListener = new OnClickListener() {
    136         @Override
    137         public void onClick(View v) {
    138             final CheckBox checkBox = (CheckBox) v;
    139             final Long contactId = (Long) checkBox.getTag();
    140             if (checkBox.isChecked()) {
    141                 mSelectedContactIds.add(contactId);
    142             } else {
    143                 mSelectedContactIds.remove(contactId);
    144             }
    145             if (mSelectedContactsListener != null) {
    146                 mSelectedContactsListener.onSelectedContactsChangedViaCheckBox();
    147             }
    148         }
    149     };
    150 }
    151