src/com/android/gallery3d/ui/DialogDetailsView.java

   1 /*
   2  * Copyright (C) 2011 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.gallery3d.ui;
  18
  19 import android.app.AlertDialog;
  20 import android.app.Dialog;
  21 import android.content.Context;
  22 import android.content.DialogInterface;
  23 import android.content.DialogInterface.OnDismissListener;
  24 import android.text.format.Formatter;
  25 import android.view.LayoutInflater;
  26 import android.view.View;
  27 import android.view.ViewGroup;
  28 import android.widget.BaseAdapter;
  29 import android.widget.ListView;
  30 import android.widget.TextView;
  31
  32 import com.android.gallery3d.R;
  33 import com.android.gallery3d.app.AbstractGalleryActivity;
  34 import com.android.gallery3d.common.Utils;
  35 import com.android.gallery3d.data.MediaDetails;
  36 import com.android.gallery3d.ui.DetailsAddressResolver.AddressResolvingListener;
  37 import com.android.gallery3d.ui.DetailsHelper.CloseListener;
  38 import com.android.gallery3d.ui.DetailsHelper.DetailsSource;
  39 import com.android.gallery3d.ui.DetailsHelper.DetailsViewContainer;
  40 import com.android.gallery3d.ui.DetailsHelper.ResolutionResolvingListener;
  41
  42 import java.text.DecimalFormat;
  43 import java.util.ArrayList;
  44 import java.util.Locale;
  45 import java.util.Map.Entry;
  46
  47 public class DialogDetailsView implements DetailsViewContainer {
  48     @SuppressWarnings("unused")
  49     private static final String TAG = "DialogDetailsView";
  50
  51     private final AbstractGalleryActivity mActivity;
  52     private DetailsAdapter mAdapter;
  53     private MediaDetails mDetails;
  54     private final DetailsSource mSource;
  55     private int mIndex;
  56     private Dialog mDialog;
  57     private CloseListener mListener;
  58
  59     public DialogDetailsView(AbstractGalleryActivity activity, DetailsSource source) {
  60         mActivity = activity;
  61         mSource = source;
  62     }
  63
  64     @Override
  65     public void show() {
  66         reloadDetails();
  67         mDialog.show();
  68     }
  69
  70     @Override
  71     public void hide() {
  72         mDialog.hide();
  73     }
  74
  75     @Override
  76     public void reloadDetails() {
  77         int index = mSource.setIndex();
  78         if (index == -1) return;
  79         MediaDetails details = mSource.getDetails();
  80         if (details != null) {
  81             if (mIndex == index && mDetails == details) return;
  82             mIndex = index;
  83             mDetails = details;
  84             setDetails(details);
  85         }
  86     }
  87
  88     private void setDetails(MediaDetails details) {
  89         mAdapter = new DetailsAdapter(details);
  90         String title = String.format(
  91                 mActivity.getAndroidContext().getString(R.string.details_title),
  92                 mIndex + 1, mSource.size());
  93         ListView detailsList = (ListView) LayoutInflater.from(mActivity.getAndroidContext()).inflate(
  94                 R.layout.details_list, null, false);
  95         detailsList.setAdapter(mAdapter);
  96         mDialog = new AlertDialog.Builder(mActivity)
  97             .setView(detailsList)
  98             .setTitle(title)
  99             .setPositiveButton(R.string.close, new DialogInterface.OnClickListener() {
 100                 @Override
 101                 public void onClick(DialogInterface dialog, int whichButton) {
 102                     mDialog.dismiss();
 103                 }
 104             })
 105             .create();
 106
 107         mDialog.setOnDismissListener(new OnDismissListener() {
 108             @Override
 109             public void onDismiss(DialogInterface dialog) {
 110                 if (mListener != null) {
 111                     mListener.onClose();
 112                 }
 113             }
 114         });
 115     }
 116
 117
 118     private class DetailsAdapter extends BaseAdapter
 119         implements AddressResolvingListener, ResolutionResolvingListener {
 120         private final ArrayList<String> mItems;
 121         private int mLocationIndex;
 122         private final Locale mDefaultLocale = Locale.getDefault();
 123         private final DecimalFormat mDecimalFormat = new DecimalFormat(".####");
 124         private int mWidthIndex = -1;
 125         private int mHeightIndex = -1;
 126
 127         public DetailsAdapter(MediaDetails details) {
 128             Context context = mActivity.getAndroidContext();
 129             mItems = new ArrayList<String>(details.size());
 130             mLocationIndex = -1;
 131             setDetails(context, details);
 132         }
 133
 134         private void setDetails(Context context, MediaDetails details) {
 135             boolean resolutionIsValid = true;
 136             String path = null;
 137             for (Entry<Integer, Object> detail : details) {
 138                 String value;
 139                 switch (detail.getKey()) {
 140                     case MediaDetails.INDEX_LOCATION: {
 141                         double[] latlng = (double[]) detail.getValue();
 142                         mLocationIndex = mItems.size();
 143                         value = DetailsHelper.resolveAddress(mActivity, latlng, this);
 144                         break;
 145                     }
 146                     case MediaDetails.INDEX_SIZE: {
 147                         value = Formatter.formatFileSize(
 148                                 context, (Long) detail.getValue());
 149                         break;
 150                     }
 151                     case MediaDetails.INDEX_WHITE_BALANCE: {
 152                         value = "1".equals(detail.getValue())
 153                                 ? context.getString(R.string.manual)
 154                                 : context.getString(R.string.auto);
 155                         break;
 156                     }
 157                     case MediaDetails.INDEX_FLASH: {
 158                         MediaDetails.FlashState flash =
 159                                 (MediaDetails.FlashState) detail.getValue();
 160                         // TODO: camera doesn't fill in the complete values, show more information
 161                         // when it is fixed.
 162                         if (flash.isFlashFired()) {
 163                             value = context.getString(R.string.flash_on);
 164                         } else {
 165                             value = context.getString(R.string.flash_off);
 166                         }
 167                         break;
 168                     }
 169                     case MediaDetails.INDEX_EXPOSURE_TIME: {
 170                         value = (String) detail.getValue();
 171                         double time = Double.valueOf(value);
 172                         if (time < 1.0f) {
 173                             value = String.format(mDefaultLocale, "%d/%d", 1,
 174                                     (int) (0.5f + 1 / time));
 175                         } else {
 176                             int integer = (int) time;
 177                             time -= integer;
 178                             value = String.valueOf(integer) + "''";
 179                             if (time > 0.0001) {
 180                                 value += String.format(mDefaultLocale, " %d/%d", 1,
 181                                         (int) (0.5f + 1 / time));
 182                             }
 183                         }
 184                         break;
 185                     }
 186                     case MediaDetails.INDEX_WIDTH:
 187                         mWidthIndex = mItems.size();
 188                         value = detail.getValue().toString();
 189                         try {
 190                             value = toLocalNumber(Integer.parseInt(value));
 191                         } catch (NumberFormatException ex) {
 192                             // Just keep the current "value" if we cannot parse
 193                             // it as a fallback.
 194                         }
 195                         if (value.equalsIgnoreCase("0")) {
 196                             value = context.getString(R.string.unknown);
 197                             resolutionIsValid = false;
 198                         }
 199                         break;
 200                     case MediaDetails.INDEX_HEIGHT: {
 201                         mHeightIndex = mItems.size();
 202                         value = detail.getValue().toString();
 203                         try {
 204                             value = toLocalNumber(Integer.parseInt(value));
 205                         } catch (NumberFormatException ex) {
 206                             // Just keep the current "value" if we cannot parse
 207                             // it as a fallback.
 208                         }
 209                         if (value.equalsIgnoreCase("0")) {
 210                             value = context.getString(R.string.unknown);
 211                             resolutionIsValid = false;
 212                         }
 213                         break;
 214                     }
 215                     case MediaDetails.INDEX_PATH:
 216                         // Prepend the new-line as a) paths are usually long, so
 217                         // the formatting is better and b) an RTL UI will see it
 218                         // as a separate section and interpret it for what it
 219                         // is, rather than trying to make it RTL (which messes
 220                         // up the path).
 221                         value = "\n" + detail.getValue().toString();
 222                         path = detail.getValue().toString();
 223                         break;
 224                     case MediaDetails.INDEX_ISO:
 225                         value = toLocalNumber(Integer.parseInt((String) detail.getValue()));
 226                         break;
 227                     case MediaDetails.INDEX_FOCAL_LENGTH:
 228                         double focalLength = Double.parseDouble(detail.getValue().toString());
 229                         value = toLocalNumber(focalLength);
 230                         break;
 231                     default: {
 232                         Object valueObj = detail.getValue();
 233                         // This shouldn't happen, log its key to help us diagnose the problem.
 234                         if (valueObj == null) {
 235                             Utils.fail("%s's value is Null",
 236                                     DetailsHelper.getDetailsName(context, detail.getKey()));
 237                         }
 238                         value = valueObj.toString();
 239                     }
 240                 }
 241                 int key = detail.getKey();
 242                 if (details.hasUnit(key)) {
 243                     value = String.format("%s: %s %s", DetailsHelper.getDetailsName(
 244                             context, key), value, context.getString(details.getUnit(key)));
 245                 } else {
 246                     value = String.format("%s: %s", DetailsHelper.getDetailsName(
 247                             context, key), value);
 248                 }
 249                 mItems.add(value);
 250             }
 251             if (!resolutionIsValid) {
 252                 DetailsHelper.resolveResolution(path, this);
 253             }
 254         }
 255
 256         @Override
 257         public boolean areAllItemsEnabled() {
 258             return false;
 259         }
 260
 261         @Override
 262         public boolean isEnabled(int position) {
 263             return false;
 264         }
 265
 266         @Override
 267         public int getCount() {
 268             return mItems.size();
 269         }
 270
 271         @Override
 272         public Object getItem(int position) {
 273             return mDetails.getDetail(position);
 274         }
 275
 276         @Override
 277         public long getItemId(int position) {
 278             return position;
 279         }
 280
 281         @Override
 282         public View getView(int position, View convertView, ViewGroup parent) {
 283             TextView tv;
 284             if (convertView == null) {
 285                 tv = (TextView) LayoutInflater.from(mActivity.getAndroidContext()).inflate(
 286                         R.layout.details, parent, false);
 287             } else {
 288                 tv = (TextView) convertView;
 289             }
 290             tv.setText(mItems.get(position));
 291             return tv;
 292         }
 293
 294         @Override
 295         public void onAddressAvailable(String address) {
 296             mItems.set(mLocationIndex, address);
 297             notifyDataSetChanged();
 298         }
 299
 300         @Override
 301         public void onResolutionAvailable(int width, int height) {
 302             if (width == 0 || height == 0) return;
 303             // Update the resolution with the new width and height
 304             Context context = mActivity.getAndroidContext();
 305             String widthString = String.format(mDefaultLocale, "%s: %d",
 306                     DetailsHelper.getDetailsName(
 307                             context, MediaDetails.INDEX_WIDTH), width);
 308             String heightString = String.format(mDefaultLocale, "%s: %d",
 309                     DetailsHelper.getDetailsName(
 310                             context, MediaDetails.INDEX_HEIGHT), height);
 311             mItems.set(mWidthIndex, String.valueOf(widthString));
 312             mItems.set(mHeightIndex, String.valueOf(heightString));
 313             notifyDataSetChanged();
 314         }
 315
 316         /** Converts the given integer to a localized String version. */
 317         private String toLocalNumber(int n) {
 318             return String.format(mDefaultLocale, "%d", n);
 319         }
 320
 321         /** Converts the given double to a localized String version. */
 322         private String toLocalNumber(double n) {
 323             return mDecimalFormat.format(n);
 324         }
 325     }
 326
 327     @Override
 328     public void setCloseListener(CloseListener listener) {
 329         mListener = listener;
 330     }
 331 }