Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 1 | /** |
| 2 | * Copyright (c) 2010, 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 android.content; |
| 18 | |
Dianne Hackborn | 23fdaf6 | 2010-08-06 12:16:55 -0700 | [diff] [blame] | 19 | import android.content.res.AssetFileDescriptor; |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 20 | import android.graphics.Bitmap; |
| 21 | import android.net.Uri; |
| 22 | import android.os.Parcel; |
| 23 | import android.os.Parcelable; |
| 24 | import android.text.TextUtils; |
Dianne Hackborn | 23fdaf6 | 2010-08-06 12:16:55 -0700 | [diff] [blame] | 25 | import android.util.Log; |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 26 | |
Dianne Hackborn | 23fdaf6 | 2010-08-06 12:16:55 -0700 | [diff] [blame] | 27 | import java.io.FileInputStream; |
| 28 | import java.io.FileNotFoundException; |
| 29 | import java.io.IOException; |
| 30 | import java.io.InputStreamReader; |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 31 | import java.util.ArrayList; |
| 32 | |
| 33 | /** |
| 34 | * Representation of a clipped data on the clipboard. |
| 35 | * |
| 36 | * <p>ClippedData is a complex type containing one or Item instances, |
| 37 | * each of which can hold one or more representations of an item of data. |
| 38 | * For display to the user, it also has a label and iconic representation.</p> |
| 39 | * |
Dianne Hackborn | f834dfa | 2010-10-26 12:43:57 -0700 | [diff] [blame] | 40 | * <p>A ClipData contains a {@link ClipDescription}, which describes |
| 41 | * important meta-data about the clip. In particular, its |
| 42 | * {@link ClipDescription#getMimeType(int) getDescription().getMimeType(int)} |
Dianne Hackborn | 1040dc4 | 2010-08-26 22:11:06 -0700 | [diff] [blame] | 43 | * must return correct MIME type(s) describing the data in the clip. For help |
| 44 | * in correctly constructing a clip with the correct MIME type, use |
| 45 | * {@link #newPlainText(CharSequence, Bitmap, CharSequence)}, |
| 46 | * {@link #newUri(ContentResolver, CharSequence, Bitmap, Uri)}, and |
| 47 | * {@link #newIntent(CharSequence, Bitmap, Intent)}. |
| 48 | * |
Dianne Hackborn | 23fdaf6 | 2010-08-06 12:16:55 -0700 | [diff] [blame] | 49 | * <p>Each Item instance can be one of three main classes of data: a simple |
| 50 | * CharSequence of text, a single Intent object, or a Uri. See {@link Item} |
| 51 | * for more details. |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 52 | * |
Dianne Hackborn | 23fdaf6 | 2010-08-06 12:16:55 -0700 | [diff] [blame] | 53 | * <a name="ImplementingPaste"></a> |
| 54 | * <h3>Implementing Paste or Drop</h3> |
| 55 | * |
| 56 | * <p>To implement a paste or drop of a ClippedData object into an application, |
| 57 | * the application must correctly interpret the data for its use. If the {@link Item} |
| 58 | * it contains is simple text or an Intent, there is little to be done: text |
| 59 | * can only be interpreted as text, and an Intent will typically be used for |
| 60 | * creating shortcuts (such as placing icons on the home screen) or other |
| 61 | * actions. |
| 62 | * |
| 63 | * <p>If all you want is the textual representation of the clipped data, you |
| 64 | * can use the convenience method {@link Item#coerceToText Item.coerceToText}. |
Dianne Hackborn | 1040dc4 | 2010-08-26 22:11:06 -0700 | [diff] [blame] | 65 | * In this case there is generally no need to worry about the MIME types |
Dianne Hackborn | f834dfa | 2010-10-26 12:43:57 -0700 | [diff] [blame] | 66 | * reported by {@link ClipDescription#getMimeType(int) getDescription().getMimeType(int)}, |
| 67 | * since any clip item an always be converted to a string. |
Dianne Hackborn | 23fdaf6 | 2010-08-06 12:16:55 -0700 | [diff] [blame] | 68 | * |
| 69 | * <p>More complicated exchanges will be done through URIs, in particular |
| 70 | * "content:" URIs. A content URI allows the recipient of a ClippedData item |
| 71 | * to interact closely with the ContentProvider holding the data in order to |
Dianne Hackborn | 1040dc4 | 2010-08-26 22:11:06 -0700 | [diff] [blame] | 72 | * negotiate the transfer of that data. The clip must also be filled in with |
| 73 | * the available MIME types; {@link #newUri(ContentResolver, CharSequence, Bitmap, Uri)} |
| 74 | * will take care of correctly doing this. |
Dianne Hackborn | 23fdaf6 | 2010-08-06 12:16:55 -0700 | [diff] [blame] | 75 | * |
| 76 | * <p>For example, here is the paste function of a simple NotePad application. |
| 77 | * When retrieving the data from the clipboard, it can do either two things: |
| 78 | * if the clipboard contains a URI reference to an existing note, it copies |
| 79 | * the entire structure of the note into a new note; otherwise, it simply |
| 80 | * coerces the clip into text and uses that as the new note's contents. |
| 81 | * |
| 82 | * {@sample development/samples/NotePad/src/com/example/android/notepad/NoteEditor.java |
| 83 | * paste} |
| 84 | * |
| 85 | * <p>In many cases an application can paste various types of streams of data. For |
| 86 | * example, an e-mail application may want to allow the user to paste an image |
| 87 | * or other binary data as an attachment. This is accomplished through the |
| 88 | * ContentResolver {@link ContentResolver#getStreamTypes(Uri, String)} and |
| 89 | * {@link ContentResolver#openTypedAssetFileDescriptor(Uri, String, android.os.Bundle)} |
| 90 | * methods. These allow a client to discover the type(s) of data that a particular |
| 91 | * content URI can make available as a stream and retrieve the stream of data. |
| 92 | * |
| 93 | * <p>For example, the implementation of {@link Item#coerceToText Item.coerceToText} |
| 94 | * itself uses this to try to retrieve a URI clip as a stream of text: |
| 95 | * |
Dianne Hackborn | f6d952b | 2010-08-27 15:41:13 -0700 | [diff] [blame] | 96 | * {@sample frameworks/base/core/java/android/content/ClipData.java coerceToText} |
Dianne Hackborn | 23fdaf6 | 2010-08-06 12:16:55 -0700 | [diff] [blame] | 97 | * |
| 98 | * <a name="ImplementingCopy"></a> |
| 99 | * <h3>Implementing Copy or Drag</h3> |
| 100 | * |
| 101 | * <p>To be the source of a clip, the application must construct a ClippedData |
| 102 | * object that any recipient can interpret best for their context. If the clip |
| 103 | * is to contain a simple text, Intent, or URI, this is easy: an {@link Item} |
| 104 | * containing the appropriate data type can be constructed and used. |
| 105 | * |
| 106 | * <p>More complicated data types require the implementation of support in |
| 107 | * a ContentProvider for describing and generating the data for the recipient. |
| 108 | * A common scenario is one where an application places on the clipboard the |
| 109 | * content: URI of an object that the user has copied, with the data at that |
| 110 | * URI consisting of a complicated structure that only other applications with |
| 111 | * direct knowledge of the structure can use. |
| 112 | * |
| 113 | * <p>For applications that do not have intrinsic knowledge of the data structure, |
| 114 | * the content provider holding it can make the data available as an arbitrary |
| 115 | * number of types of data streams. This is done by implementing the |
| 116 | * ContentProvider {@link ContentProvider#getStreamTypes(Uri, String)} and |
| 117 | * {@link ContentProvider#openTypedAssetFile(Uri, String, android.os.Bundle)} |
| 118 | * methods. |
| 119 | * |
| 120 | * <p>Going back to our simple NotePad application, this is the implementation |
| 121 | * it may have to convert a single note URI (consisting of a title and the note |
| 122 | * text) into a stream of plain text data. |
| 123 | * |
| 124 | * {@sample development/samples/NotePad/src/com/example/android/notepad/NotePadProvider.java |
| 125 | * stream} |
| 126 | * |
| 127 | * <p>The copy operation in our NotePad application is now just a simple matter |
| 128 | * of making a clip containing the URI of the note being copied: |
| 129 | * |
| 130 | * {@sample development/samples/NotePad/src/com/example/android/notepad/NotesList.java |
| 131 | * copy} |
| 132 | * |
| 133 | * <p>Note if a paste operation needs this clip as text (for example to paste |
| 134 | * into an editor), then {@link Item#coerceToText(Context)} will ask the content |
| 135 | * provider for the clip URI as text and successfully paste the entire note. |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 136 | */ |
Dianne Hackborn | f834dfa | 2010-10-26 12:43:57 -0700 | [diff] [blame] | 137 | public class ClipData implements Parcelable { |
| 138 | static final String[] MIMETYPES_TEXT_PLAIN = new String[] { |
| 139 | ClipDescription.MIMETYPE_TEXT_PLAIN }; |
| 140 | static final String[] MIMETYPES_TEXT_URILIST = new String[] { |
| 141 | ClipDescription.MIMETYPE_TEXT_URILIST }; |
| 142 | static final String[] MIMETYPES_TEXT_INTENT = new String[] { |
| 143 | ClipDescription.MIMETYPE_TEXT_INTENT }; |
Dianne Hackborn | 1040dc4 | 2010-08-26 22:11:06 -0700 | [diff] [blame] | 144 | |
Dianne Hackborn | f834dfa | 2010-10-26 12:43:57 -0700 | [diff] [blame] | 145 | final ClipDescription mClipDescription; |
| 146 | |
Dianne Hackborn | 1040dc4 | 2010-08-26 22:11:06 -0700 | [diff] [blame] | 147 | final Bitmap mIcon; |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 148 | |
| 149 | final ArrayList<Item> mItems = new ArrayList<Item>(); |
| 150 | |
Dianne Hackborn | 23fdaf6 | 2010-08-06 12:16:55 -0700 | [diff] [blame] | 151 | /** |
| 152 | * Description of a single item in a ClippedData. |
| 153 | * |
| 154 | * <p>The types than an individual item can currently contain are:</p> |
| 155 | * |
| 156 | * <ul> |
| 157 | * <li> Text: a basic string of text. This is actually a CharSequence, |
| 158 | * so it can be formatted text supported by corresponding Android built-in |
| 159 | * style spans. (Custom application spans are not supported and will be |
| 160 | * stripped when transporting through the clipboard.) |
| 161 | * <li> Intent: an arbitrary Intent object. A typical use is the shortcut |
| 162 | * to create when pasting a clipped item on to the home screen. |
| 163 | * <li> Uri: a URI reference. This may be any URI (such as an http: URI |
| 164 | * representing a bookmark), however it is often a content: URI. Using |
| 165 | * content provider references as clips like this allows an application to |
| 166 | * share complex or large clips through the standard content provider |
| 167 | * facilities. |
| 168 | * </ul> |
| 169 | */ |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 170 | public static class Item { |
Dianne Hackborn | 1040dc4 | 2010-08-26 22:11:06 -0700 | [diff] [blame] | 171 | final CharSequence mText; |
| 172 | final Intent mIntent; |
| 173 | final Uri mUri; |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 174 | |
Dianne Hackborn | 23fdaf6 | 2010-08-06 12:16:55 -0700 | [diff] [blame] | 175 | /** |
| 176 | * Create an Item consisting of a single block of (possibly styled) text. |
| 177 | */ |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 178 | public Item(CharSequence text) { |
| 179 | mText = text; |
Dianne Hackborn | 1040dc4 | 2010-08-26 22:11:06 -0700 | [diff] [blame] | 180 | mIntent = null; |
| 181 | mUri = null; |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 182 | } |
| 183 | |
Dianne Hackborn | 23fdaf6 | 2010-08-06 12:16:55 -0700 | [diff] [blame] | 184 | /** |
| 185 | * Create an Item consisting of an arbitrary Intent. |
| 186 | */ |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 187 | public Item(Intent intent) { |
Dianne Hackborn | 1040dc4 | 2010-08-26 22:11:06 -0700 | [diff] [blame] | 188 | mText = null; |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 189 | mIntent = intent; |
Dianne Hackborn | 1040dc4 | 2010-08-26 22:11:06 -0700 | [diff] [blame] | 190 | mUri = null; |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 191 | } |
| 192 | |
Dianne Hackborn | 23fdaf6 | 2010-08-06 12:16:55 -0700 | [diff] [blame] | 193 | /** |
| 194 | * Create an Item consisting of an arbitrary URI. |
| 195 | */ |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 196 | public Item(Uri uri) { |
Dianne Hackborn | 1040dc4 | 2010-08-26 22:11:06 -0700 | [diff] [blame] | 197 | mText = null; |
| 198 | mIntent = null; |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 199 | mUri = uri; |
| 200 | } |
| 201 | |
Dianne Hackborn | 23fdaf6 | 2010-08-06 12:16:55 -0700 | [diff] [blame] | 202 | /** |
| 203 | * Create a complex Item, containing multiple representations of |
| 204 | * text, intent, and/or URI. |
| 205 | */ |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 206 | public Item(CharSequence text, Intent intent, Uri uri) { |
| 207 | mText = text; |
| 208 | mIntent = intent; |
| 209 | mUri = uri; |
| 210 | } |
| 211 | |
Dianne Hackborn | 23fdaf6 | 2010-08-06 12:16:55 -0700 | [diff] [blame] | 212 | /** |
| 213 | * Retrieve the raw text contained in this Item. |
| 214 | */ |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 215 | public CharSequence getText() { |
| 216 | return mText; |
| 217 | } |
| 218 | |
Dianne Hackborn | 23fdaf6 | 2010-08-06 12:16:55 -0700 | [diff] [blame] | 219 | /** |
| 220 | * Retrieve the raw Intent contained in this Item. |
| 221 | */ |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 222 | public Intent getIntent() { |
| 223 | return mIntent; |
| 224 | } |
| 225 | |
Dianne Hackborn | 23fdaf6 | 2010-08-06 12:16:55 -0700 | [diff] [blame] | 226 | /** |
| 227 | * Retrieve the raw URI contained in this Item. |
| 228 | */ |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 229 | public Uri getUri() { |
| 230 | return mUri; |
| 231 | } |
Dianne Hackborn | 23fdaf6 | 2010-08-06 12:16:55 -0700 | [diff] [blame] | 232 | |
| 233 | /** |
| 234 | * Turn this item into text, regardless of the type of data it |
| 235 | * actually contains. |
| 236 | * |
| 237 | * <p>The algorithm for deciding what text to return is: |
| 238 | * <ul> |
| 239 | * <li> If {@link #getText} is non-null, return that. |
| 240 | * <li> If {@link #getUri} is non-null, try to retrieve its data |
| 241 | * as a text stream from its content provider. If this succeeds, copy |
| 242 | * the text into a String and return it. If it is not a content: URI or |
| 243 | * the content provider does not supply a text representation, return |
| 244 | * the raw URI as a string. |
| 245 | * <li> If {@link #getIntent} is non-null, convert that to an intent: |
| 246 | * URI and returnit. |
| 247 | * <li> Otherwise, return an empty string. |
| 248 | * </ul> |
| 249 | * |
| 250 | * @param context The caller's Context, from which its ContentResolver |
| 251 | * and other things can be retrieved. |
| 252 | * @return Returns the item's textual representation. |
| 253 | */ |
| 254 | //BEGIN_INCLUDE(coerceToText) |
| 255 | public CharSequence coerceToText(Context context) { |
| 256 | // If this Item has an explicit textual value, simply return that. |
| 257 | if (mText != null) { |
| 258 | return mText; |
| 259 | } |
| 260 | |
| 261 | // If this Item has a URI value, try using that. |
| 262 | if (mUri != null) { |
| 263 | |
| 264 | // First see if the URI can be opened as a plain text stream |
| 265 | // (of any sub-type). If so, this is the best textual |
| 266 | // representation for it. |
| 267 | FileInputStream stream = null; |
| 268 | try { |
| 269 | // Ask for a stream of the desired type. |
| 270 | AssetFileDescriptor descr = context.getContentResolver() |
| 271 | .openTypedAssetFileDescriptor(mUri, "text/*", null); |
| 272 | stream = descr.createInputStream(); |
| 273 | InputStreamReader reader = new InputStreamReader(stream, "UTF-8"); |
| 274 | |
| 275 | // Got it... copy the stream into a local string and return it. |
| 276 | StringBuilder builder = new StringBuilder(128); |
| 277 | char[] buffer = new char[8192]; |
| 278 | int len; |
| 279 | while ((len=reader.read(buffer)) > 0) { |
| 280 | builder.append(buffer, 0, len); |
| 281 | } |
| 282 | return builder.toString(); |
| 283 | |
| 284 | } catch (FileNotFoundException e) { |
| 285 | // Unable to open content URI as text... not really an |
| 286 | // error, just something to ignore. |
| 287 | |
| 288 | } catch (IOException e) { |
| 289 | // Something bad has happened. |
| 290 | Log.w("ClippedData", "Failure loading text", e); |
| 291 | return e.toString(); |
| 292 | |
| 293 | } finally { |
| 294 | if (stream != null) { |
| 295 | try { |
| 296 | stream.close(); |
| 297 | } catch (IOException e) { |
| 298 | } |
| 299 | } |
| 300 | } |
| 301 | |
| 302 | // If we couldn't open the URI as a stream, then the URI itself |
| 303 | // probably serves fairly well as a textual representation. |
| 304 | return mUri.toString(); |
| 305 | } |
| 306 | |
| 307 | // Finally, if all we have is an Intent, then we can just turn that |
| 308 | // into text. Not the most user-friendly thing, but it's something. |
| 309 | if (mIntent != null) { |
| 310 | return mIntent.toUri(Intent.URI_INTENT_SCHEME); |
| 311 | } |
| 312 | |
| 313 | // Shouldn't get here, but just in case... |
| 314 | return ""; |
| 315 | } |
| 316 | //END_INCLUDE(coerceToText) |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 317 | } |
| 318 | |
| 319 | /** |
| 320 | * Create a new clip. |
| 321 | * |
| 322 | * @param label Label to show to the user describing this clip. |
Dianne Hackborn | 1040dc4 | 2010-08-26 22:11:06 -0700 | [diff] [blame] | 323 | * @param mimeTypes An array of MIME types this data is available as. |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 324 | * @param icon Bitmap providing the user with an iconing representation of |
| 325 | * the clip. |
| 326 | * @param item The contents of the first item in the clip. |
| 327 | */ |
Dianne Hackborn | 1040dc4 | 2010-08-26 22:11:06 -0700 | [diff] [blame] | 328 | public ClipData(CharSequence label, String[] mimeTypes, Bitmap icon, Item item) { |
Dianne Hackborn | f834dfa | 2010-10-26 12:43:57 -0700 | [diff] [blame] | 329 | mClipDescription = new ClipDescription(label, mimeTypes); |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 330 | if (item == null) { |
| 331 | throw new NullPointerException("item is null"); |
| 332 | } |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 333 | mIcon = icon; |
| 334 | mItems.add(item); |
| 335 | } |
| 336 | |
Dianne Hackborn | 1040dc4 | 2010-08-26 22:11:06 -0700 | [diff] [blame] | 337 | /** |
Dianne Hackborn | f834dfa | 2010-10-26 12:43:57 -0700 | [diff] [blame] | 338 | * Create a new clip. |
| 339 | * |
| 340 | * @param description The ClipDescription describing the clip contents. |
| 341 | * @param icon Bitmap providing the user with an iconing representation of |
| 342 | * the clip. |
| 343 | * @param item The contents of the first item in the clip. |
| 344 | */ |
| 345 | public ClipData(ClipDescription description, Bitmap icon, Item item) { |
| 346 | mClipDescription = description; |
| 347 | if (item == null) { |
| 348 | throw new NullPointerException("item is null"); |
| 349 | } |
| 350 | mIcon = icon; |
| 351 | mItems.add(item); |
| 352 | } |
| 353 | |
| 354 | /** |
| 355 | * Create a new ClipData holding data of the type |
| 356 | * {@link ClipDescription#MIMETYPE_TEXT_PLAIN}. |
Dianne Hackborn | 1040dc4 | 2010-08-26 22:11:06 -0700 | [diff] [blame] | 357 | * |
| 358 | * @param label User-visible label for the clip data. |
| 359 | * @param icon Iconic representation of the clip data. |
| 360 | * @param text The actual text in the clip. |
| 361 | * @return Returns a new ClipData containing the specified data. |
| 362 | */ |
| 363 | static public ClipData newPlainText(CharSequence label, Bitmap icon, CharSequence text) { |
| 364 | Item item = new Item(text); |
| 365 | return new ClipData(label, MIMETYPES_TEXT_PLAIN, icon, item); |
| 366 | } |
| 367 | |
| 368 | /** |
Dianne Hackborn | f834dfa | 2010-10-26 12:43:57 -0700 | [diff] [blame] | 369 | * Create a new ClipData holding an Intent with MIME type |
| 370 | * {@link ClipDescription#MIMETYPE_TEXT_INTENT}. |
Dianne Hackborn | 1040dc4 | 2010-08-26 22:11:06 -0700 | [diff] [blame] | 371 | * |
| 372 | * @param label User-visible label for the clip data. |
| 373 | * @param icon Iconic representation of the clip data. |
| 374 | * @param intent The actual Intent in the clip. |
| 375 | * @return Returns a new ClipData containing the specified data. |
| 376 | */ |
| 377 | static public ClipData newIntent(CharSequence label, Bitmap icon, Intent intent) { |
| 378 | Item item = new Item(intent); |
| 379 | return new ClipData(label, MIMETYPES_TEXT_INTENT, icon, item); |
| 380 | } |
| 381 | |
| 382 | /** |
| 383 | * Create a new ClipData holding a URI. If the URI is a content: URI, |
| 384 | * this will query the content provider for the MIME type of its data and |
| 385 | * use that as the MIME type. Otherwise, it will use the MIME type |
Dianne Hackborn | f834dfa | 2010-10-26 12:43:57 -0700 | [diff] [blame] | 386 | * {@link ClipDescription#MIMETYPE_TEXT_URILIST}. |
Dianne Hackborn | 1040dc4 | 2010-08-26 22:11:06 -0700 | [diff] [blame] | 387 | * |
| 388 | * @param resolver ContentResolver used to get information about the URI. |
| 389 | * @param label User-visible label for the clip data. |
| 390 | * @param icon Iconic representation of the clip data. |
| 391 | * @param uri The URI in the clip. |
| 392 | * @return Returns a new ClipData containing the specified data. |
| 393 | */ |
| 394 | static public ClipData newUri(ContentResolver resolver, CharSequence label, |
| 395 | Bitmap icon, Uri uri) { |
| 396 | Item item = new Item(uri); |
| 397 | String[] mimeTypes = null; |
| 398 | if ("content".equals(uri.getScheme())) { |
| 399 | String realType = resolver.getType(uri); |
| 400 | mimeTypes = resolver.getStreamTypes(uri, "*/*"); |
| 401 | if (mimeTypes == null) { |
| 402 | if (realType != null) { |
Dianne Hackborn | f834dfa | 2010-10-26 12:43:57 -0700 | [diff] [blame] | 403 | mimeTypes = new String[] { realType, ClipDescription.MIMETYPE_TEXT_URILIST }; |
Dianne Hackborn | 1040dc4 | 2010-08-26 22:11:06 -0700 | [diff] [blame] | 404 | } |
| 405 | } else { |
| 406 | String[] tmp = new String[mimeTypes.length + (realType != null ? 2 : 1)]; |
| 407 | int i = 0; |
| 408 | if (realType != null) { |
| 409 | tmp[0] = realType; |
| 410 | i++; |
| 411 | } |
| 412 | System.arraycopy(mimeTypes, 0, tmp, i, mimeTypes.length); |
Dianne Hackborn | f834dfa | 2010-10-26 12:43:57 -0700 | [diff] [blame] | 413 | tmp[i + mimeTypes.length] = ClipDescription.MIMETYPE_TEXT_URILIST; |
Dianne Hackborn | 1040dc4 | 2010-08-26 22:11:06 -0700 | [diff] [blame] | 414 | mimeTypes = tmp; |
| 415 | } |
| 416 | } |
| 417 | if (mimeTypes == null) { |
| 418 | mimeTypes = MIMETYPES_TEXT_URILIST; |
| 419 | } |
| 420 | return new ClipData(label, mimeTypes, icon, item); |
| 421 | } |
| 422 | |
| 423 | /** |
Dianne Hackborn | f834dfa | 2010-10-26 12:43:57 -0700 | [diff] [blame] | 424 | * Create a new ClipData holding an URI with MIME type |
| 425 | * {@link ClipDescription#MIMETYPE_TEXT_URILIST}. |
Dianne Hackborn | 1040dc4 | 2010-08-26 22:11:06 -0700 | [diff] [blame] | 426 | * Unlike {@link #newUri(ContentResolver, CharSequence, Bitmap, Uri)}, nothing |
| 427 | * is inferred about the URI -- if it is a content: URI holding a bitmap, |
| 428 | * the reported type will still be uri-list. Use this with care! |
| 429 | * |
| 430 | * @param label User-visible label for the clip data. |
| 431 | * @param icon Iconic representation of the clip data. |
| 432 | * @param uri The URI in the clip. |
| 433 | * @return Returns a new ClipData containing the specified data. |
| 434 | */ |
| 435 | static public ClipData newRawUri(CharSequence label, Bitmap icon, Uri uri) { |
| 436 | Item item = new Item(uri); |
| 437 | return new ClipData(label, MIMETYPES_TEXT_URILIST, icon, item); |
| 438 | } |
| 439 | |
Dianne Hackborn | f834dfa | 2010-10-26 12:43:57 -0700 | [diff] [blame] | 440 | /** |
| 441 | * Return the {@link ClipDescription} associated with this data, describing |
| 442 | * what it contains. |
| 443 | */ |
| 444 | public ClipDescription getDescription() { |
| 445 | return mClipDescription; |
| 446 | } |
| 447 | |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 448 | public void addItem(Item item) { |
| 449 | if (item == null) { |
| 450 | throw new NullPointerException("item is null"); |
| 451 | } |
| 452 | mItems.add(item); |
| 453 | } |
| 454 | |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 455 | public Bitmap getIcon() { |
| 456 | return mIcon; |
| 457 | } |
| 458 | |
| 459 | public int getItemCount() { |
| 460 | return mItems.size(); |
| 461 | } |
| 462 | |
| 463 | public Item getItem(int index) { |
| 464 | return mItems.get(index); |
| 465 | } |
| 466 | |
| 467 | @Override |
| 468 | public int describeContents() { |
| 469 | return 0; |
| 470 | } |
| 471 | |
| 472 | @Override |
| 473 | public void writeToParcel(Parcel dest, int flags) { |
Dianne Hackborn | f834dfa | 2010-10-26 12:43:57 -0700 | [diff] [blame] | 474 | mClipDescription.writeToParcel(dest, flags); |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 475 | if (mIcon != null) { |
| 476 | dest.writeInt(1); |
| 477 | mIcon.writeToParcel(dest, flags); |
| 478 | } else { |
| 479 | dest.writeInt(0); |
| 480 | } |
| 481 | final int N = mItems.size(); |
| 482 | dest.writeInt(N); |
| 483 | for (int i=0; i<N; i++) { |
| 484 | Item item = mItems.get(i); |
| 485 | TextUtils.writeToParcel(item.mText, dest, flags); |
| 486 | if (item.mIntent != null) { |
| 487 | dest.writeInt(1); |
| 488 | item.mIntent.writeToParcel(dest, flags); |
| 489 | } else { |
| 490 | dest.writeInt(0); |
| 491 | } |
| 492 | if (item.mUri != null) { |
| 493 | dest.writeInt(1); |
| 494 | item.mUri.writeToParcel(dest, flags); |
| 495 | } else { |
| 496 | dest.writeInt(0); |
| 497 | } |
| 498 | } |
| 499 | } |
| 500 | |
Dianne Hackborn | 1040dc4 | 2010-08-26 22:11:06 -0700 | [diff] [blame] | 501 | ClipData(Parcel in) { |
Dianne Hackborn | f834dfa | 2010-10-26 12:43:57 -0700 | [diff] [blame] | 502 | mClipDescription = new ClipDescription(in); |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 503 | if (in.readInt() != 0) { |
| 504 | mIcon = Bitmap.CREATOR.createFromParcel(in); |
Dianne Hackborn | 1040dc4 | 2010-08-26 22:11:06 -0700 | [diff] [blame] | 505 | } else { |
| 506 | mIcon = null; |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 507 | } |
| 508 | final int N = in.readInt(); |
| 509 | for (int i=0; i<N; i++) { |
| 510 | CharSequence text = TextUtils.CHAR_SEQUENCE_CREATOR.createFromParcel(in); |
| 511 | Intent intent = in.readInt() != 0 ? Intent.CREATOR.createFromParcel(in) : null; |
| 512 | Uri uri = in.readInt() != 0 ? Uri.CREATOR.createFromParcel(in) : null; |
| 513 | mItems.add(new Item(text, intent, uri)); |
| 514 | } |
| 515 | } |
| 516 | |
Dianne Hackborn | 1040dc4 | 2010-08-26 22:11:06 -0700 | [diff] [blame] | 517 | public static final Parcelable.Creator<ClipData> CREATOR = |
| 518 | new Parcelable.Creator<ClipData>() { |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 519 | |
Dianne Hackborn | 1040dc4 | 2010-08-26 22:11:06 -0700 | [diff] [blame] | 520 | public ClipData createFromParcel(Parcel source) { |
| 521 | return new ClipData(source); |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 522 | } |
| 523 | |
Dianne Hackborn | 1040dc4 | 2010-08-26 22:11:06 -0700 | [diff] [blame] | 524 | public ClipData[] newArray(int size) { |
| 525 | return new ClipData[size]; |
Dianne Hackborn | 9f53119 | 2010-08-04 17:48:03 -0700 | [diff] [blame] | 526 | } |
| 527 | }; |
| 528 | } |