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.TextView;
17
18import com.wefika.flowlayout.FlowLayout;
19
20import java.lang.ref.WeakReference;
21import java.util.List;
22import java.util.concurrent.RejectedExecutionException;
23
24import eu.siacs.conversations.R;
25import eu.siacs.conversations.entities.ListItem;
26import eu.siacs.conversations.ui.XmppActivity;
27import eu.siacs.conversations.utils.UIHelper;
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 FlowLayout tagLayout = (FlowLayout) view.findViewById(R.id.tags);
64
65 List<ListItem.Tag> tags = item.getTags(activity);
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 String jid = item.getDisplayJid();
80 if (jid != null) {
81 tvJid.setVisibility(View.VISIBLE);
82 tvJid.setText(jid);
83 } else {
84 tvJid.setVisibility(View.GONE);
85 }
86 tvName.setText(item.getDisplayName());
87 loadAvatar(item,picture);
88 return view;
89 }
90
91 public void setOnTagClickedListener(OnTagClickedListener listener) {
92 this.mOnTagClickedListener = listener;
93 }
94
95 public interface OnTagClickedListener {
96 void onTagClicked(String tag);
97 }
98
99 class BitmapWorkerTask extends AsyncTask<ListItem, Void, Bitmap> {
100 private final WeakReference<ImageView> imageViewReference;
101 private ListItem item = null;
102
103 public BitmapWorkerTask(ImageView imageView) {
104 imageViewReference = new WeakReference<>(imageView);
105 }
106
107 @Override
108 protected Bitmap doInBackground(ListItem... params) {
109 return activity.avatarService().get(params[0], activity.getPixel(48), isCancelled());
110 }
111
112 @Override
113 protected void onPostExecute(Bitmap bitmap) {
114 if (bitmap != null && !isCancelled()) {
115 final ImageView imageView = imageViewReference.get();
116 if (imageView != null) {
117 imageView.setImageBitmap(bitmap);
118 imageView.setBackgroundColor(0x00000000);
119 }
120 }
121 }
122 }
123
124 public void loadAvatar(ListItem item, ImageView imageView) {
125 if (cancelPotentialWork(item, imageView)) {
126 final Bitmap bm = activity.avatarService().get(item,activity.getPixel(48),true);
127 if (bm != null) {
128 cancelPotentialWork(item, imageView);
129 imageView.setImageBitmap(bm);
130 imageView.setBackgroundColor(0x00000000);
131 } else {
132 imageView.setBackgroundColor(UIHelper.getColorForName(item.getDisplayName()));
133 imageView.setImageDrawable(null);
134 final BitmapWorkerTask task = new BitmapWorkerTask(imageView);
135 final AsyncDrawable asyncDrawable = new AsyncDrawable(activity.getResources(), null, task);
136 imageView.setImageDrawable(asyncDrawable);
137 try {
138 task.execute(item);
139 } catch (final RejectedExecutionException ignored) {
140 }
141 }
142 }
143 }
144
145 public static boolean cancelPotentialWork(ListItem item, ImageView imageView) {
146 final BitmapWorkerTask bitmapWorkerTask = getBitmapWorkerTask(imageView);
147
148 if (bitmapWorkerTask != null) {
149 final ListItem oldItem = bitmapWorkerTask.item;
150 if (oldItem == null || item != oldItem) {
151 bitmapWorkerTask.cancel(true);
152 } else {
153 return false;
154 }
155 }
156 return true;
157 }
158
159 private static BitmapWorkerTask getBitmapWorkerTask(ImageView imageView) {
160 if (imageView != null) {
161 final Drawable drawable = imageView.getDrawable();
162 if (drawable instanceof AsyncDrawable) {
163 final AsyncDrawable asyncDrawable = (AsyncDrawable) drawable;
164 return asyncDrawable.getBitmapWorkerTask();
165 }
166 }
167 return null;
168 }
169
170 static class AsyncDrawable extends BitmapDrawable {
171 private final WeakReference<BitmapWorkerTask> bitmapWorkerTaskReference;
172
173 public AsyncDrawable(Resources res, Bitmap bitmap, BitmapWorkerTask bitmapWorkerTask) {
174 super(res, bitmap);
175 bitmapWorkerTaskReference = new WeakReference<>(bitmapWorkerTask);
176 }
177
178 public BitmapWorkerTask getBitmapWorkerTask() {
179 return bitmapWorkerTaskReference.get();
180 }
181 }
182
183}