1package eu.siacs.conversations.ui.adapter;
2
3import android.content.Context;
4import android.content.SharedPreferences;
5import android.content.res.Resources;
6import android.graphics.Bitmap;
7import android.graphics.drawable.BitmapDrawable;
8import android.graphics.drawable.Drawable;
9import android.os.AsyncTask;
10import android.preference.PreferenceManager;
11import android.view.LayoutInflater;
12import android.view.View;
13import android.view.ViewGroup;
14import android.widget.ArrayAdapter;
15import android.widget.ImageView;
16import android.widget.LinearLayout;
17import android.widget.TextView;
18
19import java.lang.ref.WeakReference;
20import java.util.List;
21import java.util.concurrent.RejectedExecutionException;
22
23import eu.siacs.conversations.R;
24import eu.siacs.conversations.entities.ListItem;
25import eu.siacs.conversations.ui.XmppActivity;
26import eu.siacs.conversations.utils.UIHelper;
27import eu.siacs.conversations.xmpp.jid.Jid;
28
29public class ListItemAdapter extends ArrayAdapter<ListItem> {
30
31 protected XmppActivity activity;
32 protected boolean showDynamicTags = false;
33 private View.OnClickListener onTagTvClick = new View.OnClickListener() {
34 @Override
35 public void onClick(View view) {
36 if (view instanceof TextView && mOnTagClickedListener != null) {
37 TextView tv = (TextView) view;
38 final String tag = tv.getText().toString();
39 mOnTagClickedListener.onTagClicked(tag);
40 }
41 }
42 };
43 private OnTagClickedListener mOnTagClickedListener = null;
44
45 public ListItemAdapter(XmppActivity activity, List<ListItem> objects) {
46 super(activity, 0, objects);
47 this.activity = activity;
48 SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(activity);
49 this.showDynamicTags = preferences.getBoolean("show_dynamic_tags",false);
50 }
51
52 @Override
53 public View getView(int position, View view, ViewGroup parent) {
54 LayoutInflater inflater = (LayoutInflater) getContext()
55 .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
56 ListItem item = getItem(position);
57 if (view == null) {
58 view = inflater.inflate(R.layout.contact, parent, false);
59 }
60 TextView tvName = (TextView) view.findViewById(R.id.contact_display_name);
61 TextView tvJid = (TextView) view.findViewById(R.id.contact_jid);
62 ImageView picture = (ImageView) view.findViewById(R.id.contact_photo);
63 LinearLayout tagLayout = (LinearLayout) view.findViewById(R.id.tags);
64
65 List<ListItem.Tag> tags = item.getTags();
66 if (tags.size() == 0 || !this.showDynamicTags) {
67 tagLayout.setVisibility(View.GONE);
68 } else {
69 tagLayout.setVisibility(View.VISIBLE);
70 tagLayout.removeAllViewsInLayout();
71 for(ListItem.Tag tag : tags) {
72 TextView tv = (TextView) inflater.inflate(R.layout.list_item_tag,tagLayout,false);
73 tv.setText(tag.getName());
74 tv.setBackgroundColor(tag.getColor());
75 tv.setOnClickListener(this.onTagTvClick);
76 tagLayout.addView(tv);
77 }
78 }
79 final Jid jid = item.getJid();
80 if (jid != null) {
81 tvJid.setText(jid.toString());
82 } else {
83 tvJid.setText("");
84 }
85 tvName.setText(item.getDisplayName());
86 loadAvatar(item,picture);
87 return view;
88 }
89
90 public void setOnTagClickedListener(OnTagClickedListener listener) {
91 this.mOnTagClickedListener = listener;
92 }
93
94 public interface OnTagClickedListener {
95 void onTagClicked(String tag);
96 }
97
98 class BitmapWorkerTask extends AsyncTask<ListItem, Void, Bitmap> {
99 private final WeakReference<ImageView> imageViewReference;
100 private ListItem item = null;
101
102 public BitmapWorkerTask(ImageView imageView) {
103 imageViewReference = new WeakReference<>(imageView);
104 }
105
106 @Override
107 protected Bitmap doInBackground(ListItem... params) {
108 return activity.avatarService().get(params[0], activity.getPixel(48));
109 }
110
111 @Override
112 protected void onPostExecute(Bitmap bitmap) {
113 if (bitmap != null) {
114 final ImageView imageView = imageViewReference.get();
115 if (imageView != null) {
116 imageView.setImageBitmap(bitmap);
117 imageView.setBackgroundColor(0x00000000);
118 }
119 }
120 }
121 }
122
123 public void loadAvatar(ListItem item, ImageView imageView) {
124 if (cancelPotentialWork(item, imageView)) {
125 final Bitmap bm = activity.avatarService().get(item,activity.getPixel(48),true);
126 if (bm != null) {
127 imageView.setImageBitmap(bm);
128 imageView.setBackgroundColor(0x00000000);
129 } else {
130 imageView.setBackgroundColor(UIHelper.getColorForName(item.getDisplayName()));
131 imageView.setImageDrawable(null);
132 final BitmapWorkerTask task = new BitmapWorkerTask(imageView);
133 final AsyncDrawable asyncDrawable = new AsyncDrawable(activity.getResources(), null, task);
134 imageView.setImageDrawable(asyncDrawable);
135 try {
136 task.execute(item);
137 } catch (final RejectedExecutionException ignored) {
138 }
139 }
140 }
141 }
142
143 public static boolean cancelPotentialWork(ListItem item, ImageView imageView) {
144 final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
145
146 if (bitmapWorkerTask != null) {
147 final ListItem oldItem = bitmapWorkerTask.item;
148 if (oldItem == null || item != oldItem) {
149 bitmapWorkerTask.cancel(true);
150 } else {
151 return false;
152 }
153 }
154 return true;
155 }
156
157 private static BitmapWorkerTask getBitmapWorkerTask(ImageView imageView) {
158 if (imageView != null) {
159 final Drawable drawable = imageView.getDrawable();
160 if (drawable instanceof AsyncDrawable) {
161 final AsyncDrawable asyncDrawable = (AsyncDrawable) drawable;
162 return asyncDrawable.getBitmapWorkerTask();
163 }
164 }
165 return null;
166 }
167
168 static class AsyncDrawable extends BitmapDrawable {
169 private final WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;
170
171 public AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) {
172 super(res, bitmap);
173 bitmapWorkerTaskReference = new WeakReference<>(bitmapWorkerTask);
174 }
175
176 public BitmapWorkerTask getBitmapWorkerTask() {
177 return bitmapWorkerTaskReference.get();
178 }
179 }
180
181}