MessageViewFragmentBase.java revision 99930f81f1b7f1d5b769be958b3d1efe0aeef3fc
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 17package com.android.email.activity; 18 19import com.android.email.AttachmentInfo; 20import com.android.email.Controller; 21import com.android.email.ControllerResultUiThreadWrapper; 22import com.android.email.Email; 23import com.android.email.UiUtilities; 24import com.android.email.Preferences; 25import com.android.email.R; 26import com.android.email.Throttle; 27import com.android.email.mail.internet.EmailHtmlUtil; 28import com.android.email.service.AttachmentDownloadService; 29import com.android.emailcommon.Logging; 30import com.android.emailcommon.mail.Address; 31import com.android.emailcommon.mail.MessagingException; 32import com.android.emailcommon.provider.EmailContent.Attachment; 33import com.android.emailcommon.provider.EmailContent.Body; 34import com.android.emailcommon.provider.EmailContent.Mailbox; 35import com.android.emailcommon.provider.EmailContent.Message; 36import com.android.emailcommon.utility.AttachmentUtilities; 37import com.android.emailcommon.utility.EmailAsyncTask; 38import com.android.emailcommon.utility.Utility; 39 40import org.apache.commons.io.IOUtils; 41 42import android.app.Activity; 43import android.app.DownloadManager; 44import android.app.Fragment; 45import android.app.LoaderManager.LoaderCallbacks; 46import android.content.ActivityNotFoundException; 47import android.content.ContentResolver; 48import android.content.ContentUris; 49import android.content.Context; 50import android.content.Intent; 51import android.content.Loader; 52import android.content.pm.PackageManager; 53import android.content.res.Resources; 54import android.database.ContentObserver; 55import android.graphics.Bitmap; 56import android.graphics.BitmapFactory; 57import android.media.MediaScannerConnection; 58import android.net.Uri; 59import android.os.AsyncTask; 60import android.os.Bundle; 61import android.os.Environment; 62import android.os.Handler; 63import android.provider.ContactsContract; 64import android.provider.ContactsContract.QuickContact; 65import android.text.SpannableStringBuilder; 66import android.text.TextUtils; 67import android.text.format.DateUtils; 68import android.util.Log; 69import android.util.Patterns; 70import android.view.LayoutInflater; 71import android.view.View; 72import android.view.ViewGroup; 73import android.webkit.WebSettings; 74import android.webkit.WebView; 75import android.webkit.WebViewClient; 76import android.widget.Button; 77import android.widget.ImageView; 78import android.widget.LinearLayout; 79import android.widget.ProgressBar; 80import android.widget.TextView; 81 82import java.io.File; 83import java.io.FileOutputStream; 84import java.io.IOException; 85import java.io.InputStream; 86import java.io.OutputStream; 87import java.util.Formatter; 88import java.util.regex.Matcher; 89import java.util.regex.Pattern; 90 91// TODO Better handling of config changes. 92// - Retain the content; don't kick 3 async tasks every time 93 94/** 95 * Base class for {@link MessageViewFragment} and {@link MessageFileViewFragment}. 96 * 97 * See {@link MessageViewBase} for the class relation diagram. 98 */ 99public abstract class MessageViewFragmentBase extends Fragment implements View.OnClickListener { 100 private static final String BUNDLE_KEY_CURRENT_TAB = "MessageViewFragmentBase.currentTab"; 101 private static final String BUNDLE_KEY_PICTURE_LOADED = "MessageViewFragmentBase.pictureLoaded"; 102 private static final int PHOTO_LOADER_ID = 1; 103 private Context mContext; 104 105 // Regex that matches start of img tag. '<(?i)img\s+'. 106 private static final Pattern IMG_TAG_START_REGEX = Pattern.compile("<(?i)img\\s+"); 107 // Regex that matches Web URL protocol part as case insensitive. 108 private static final Pattern WEB_URL_PROTOCOL = Pattern.compile("(?i)http|https://"); 109 110 private static int PREVIEW_ICON_WIDTH = 62; 111 private static int PREVIEW_ICON_HEIGHT = 62; 112 113 private TextView mSubjectView; 114 private TextView mFromNameView; 115 private TextView mFromAddressView; 116 private TextView mDateTimeView; 117 private TextView mAddressesView; 118 private WebView mMessageContentView; 119 private LinearLayout mAttachments; 120 private View mTabSection; 121 private ImageView mFromBadge; 122 private ImageView mSenderPresenceView; 123 private View mMainView; 124 private View mLoadingProgress; 125 private Button mShowDetailsButton; 126 127 private TextView mMessageTab; 128 private TextView mAttachmentTab; 129 private TextView mInviteTab; 130 // It is not really a tab, but looks like one of them. 131 private TextView mShowPicturesTab; 132 133 private View mAttachmentsScroll; 134 private View mInviteScroll; 135 136 private long mAccountId = -1; 137 private long mMessageId = -1; 138 private Message mMessage; 139 140 private LoadMessageTask mLoadMessageTask; 141 private ReloadMessageTask mReloadMessageTask; 142 private LoadBodyTask mLoadBodyTask; 143 private LoadAttachmentsTask mLoadAttachmentsTask; 144 145 private Controller mController; 146 private ControllerResultUiThreadWrapper<ControllerResults> mControllerCallback; 147 148 // contains the HTML body. Is used by LoadAttachmentTask to display inline images. 149 // is null most of the time, is used transiently to pass info to LoadAttachementTask 150 private String mHtmlTextRaw; 151 152 // contains the HTML content as set in WebView. 153 private String mHtmlTextWebView; 154 155 private boolean mResumed; 156 private boolean mLoadWhenResumed; 157 158 private boolean mIsMessageLoadedForTest; 159 160 private MessageObserver mMessageObserver; 161 162 private static final int CONTACT_STATUS_STATE_UNLOADED = 0; 163 private static final int CONTACT_STATUS_STATE_UNLOADED_TRIGGERED = 1; 164 private static final int CONTACT_STATUS_STATE_LOADED = 2; 165 166 private int mContactStatusState; 167 private Uri mQuickContactLookupUri; 168 169 /** Flag for {@link #mTabFlags}: Message has attachment(s) */ 170 protected static final int TAB_FLAGS_HAS_ATTACHMENT = 1; 171 172 /** 173 * Flag for {@link #mTabFlags}: Message contains invite. This flag is only set by 174 * {@link MessageViewFragment}. 175 */ 176 protected static final int TAB_FLAGS_HAS_INVITE = 2; 177 178 /** Flag for {@link #mTabFlags}: Message contains pictures */ 179 protected static final int TAB_FLAGS_HAS_PICTURES = 4; 180 181 /** Flag for {@link #mTabFlags}: "Show pictures" has already been pressed */ 182 protected static final int TAB_FLAGS_PICTURE_LOADED = 8; 183 184 /** 185 * Flags to control the tabs. 186 * @see #updateTabs(int) 187 */ 188 private int mTabFlags; 189 190 /** # of attachments in the current message */ 191 private int mAttachmentCount; 192 193 // Use (random) large values, to avoid confusion with TAB_FLAGS_* 194 protected static final int TAB_MESSAGE = 101; 195 protected static final int TAB_INVITE = 102; 196 protected static final int TAB_ATTACHMENT = 103; 197 private static final int TAB_NONE = 0; 198 199 /** Current tab */ 200 private int mCurrentTab = TAB_NONE; 201 /** 202 * Tab that was selected in the previous activity instance. 203 * Used to restore the current tab after screen rotation. 204 */ 205 private int mRestoredTab = TAB_NONE; 206 207 private boolean mRestoredPictureLoaded; 208 209 private final EmailAsyncTask.Tracker mUpdatePreviewIconTaskTracker 210 = new EmailAsyncTask.Tracker(); 211 212 /** 213 * Zoom scales for webview. Values correspond to {@link Preferences#TEXT_ZOOM_TINY}.. 214 * {@link Preferences#TEXT_ZOOM_HUGE}. 215 */ 216 private static final float[] ZOOM_SCALE_ARRAY = new float[] {0.8f, 0.9f, 1.0f, 1.2f, 1.5f}; 217 218 public interface Callback { 219 /** Called when the fragment is about to show up, or show a different message. */ 220 public void onMessageViewShown(int mailboxType); 221 222 /** Called when the fragment is about to be destroyed. */ 223 public void onMessageViewGone(); 224 225 /** 226 * Called when a link in a message is clicked. 227 * 228 * @param url link url that's clicked. 229 * @return true if handled, false otherwise. 230 */ 231 public boolean onUrlInMessageClicked(String url); 232 233 /** 234 * Called when the message specified doesn't exist, or is deleted/moved. 235 */ 236 public void onMessageNotExists(); 237 238 /** Called when it starts loading a message. */ 239 public void onLoadMessageStarted(); 240 241 /** Called when it successfully finishes loading a message. */ 242 public void onLoadMessageFinished(); 243 244 /** Called when an error occurred during loading a message. */ 245 public void onLoadMessageError(String errorMessage); 246 } 247 248 public static class EmptyCallback implements Callback { 249 public static final Callback INSTANCE = new EmptyCallback(); 250 @Override public void onMessageViewShown(int mailboxType) {} 251 @Override public void onMessageViewGone() {} 252 @Override public void onLoadMessageError(String errorMessage) {} 253 @Override public void onLoadMessageFinished() {} 254 @Override public void onLoadMessageStarted() {} 255 @Override public void onMessageNotExists() {} 256 @Override 257 public boolean onUrlInMessageClicked(String url) { 258 return false; 259 } 260 } 261 262 private Callback mCallback = EmptyCallback.INSTANCE; 263 264 @Override 265 public void onCreate(Bundle savedInstanceState) { 266 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 267 Log.d(Logging.LOG_TAG, "MessageViewFragment onCreate"); 268 } 269 super.onCreate(savedInstanceState); 270 271 mContext = getActivity().getApplicationContext(); 272 273 mControllerCallback = new ControllerResultUiThreadWrapper<ControllerResults>( 274 new Handler(), new ControllerResults()); 275 276 mController = Controller.getInstance(mContext); 277 mMessageObserver = new MessageObserver(new Handler(), mContext); 278 279 if (savedInstanceState != null) { 280 restoreInstanceState(savedInstanceState); 281 } 282 } 283 284 @Override 285 public View onCreateView( 286 LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 287 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 288 Log.d(Logging.LOG_TAG, "MessageViewFragment onCreateView"); 289 } 290 final View view = inflater.inflate(R.layout.message_view_fragment, container, false); 291 292 mSubjectView = (TextView) view.findViewById(R.id.subject); 293 mFromNameView = (TextView) view.findViewById(R.id.from_name); 294 mFromAddressView = (TextView) view.findViewById(R.id.from_address); 295 mAddressesView = (TextView) view.findViewById(R.id.addresses); 296 mDateTimeView = (TextView) view.findViewById(R.id.datetime); 297 mMessageContentView = (WebView) view.findViewById(R.id.message_content); 298 mAttachments = (LinearLayout) view.findViewById(R.id.attachments); 299 mTabSection = view.findViewById(R.id.message_tabs_section); 300 mFromBadge = (ImageView) view.findViewById(R.id.badge); 301 mSenderPresenceView = (ImageView) view.findViewById(R.id.presence); 302 mMainView = view.findViewById(R.id.main_panel); 303 mLoadingProgress = view.findViewById(R.id.loading_progress); 304 mShowDetailsButton = (Button) view.findViewById(R.id.show_details); 305 306 mFromNameView.setOnClickListener(this); 307 mFromAddressView.setOnClickListener(this); 308 mFromBadge.setOnClickListener(this); 309 mSenderPresenceView.setOnClickListener(this); 310 311 mMessageTab = (TextView) view.findViewById(R.id.show_message); 312 mAttachmentTab = (TextView) view.findViewById(R.id.show_attachments); 313 mShowPicturesTab = (TextView) view.findViewById(R.id.show_pictures); 314 // Invite is only used in MessageViewFragment, but visibility is controlled here. 315 mInviteTab = (TextView) view.findViewById(R.id.show_invite); 316 317 mMessageTab.setOnClickListener(this); 318 mAttachmentTab.setOnClickListener(this); 319 mShowPicturesTab.setOnClickListener(this); 320 mInviteTab.setOnClickListener(this); 321 mShowDetailsButton.setOnClickListener(this); 322 323 mAttachmentsScroll = view.findViewById(R.id.attachments_scroll); 324 mInviteScroll = view.findViewById(R.id.invite_scroll); 325 326 WebSettings webSettings = mMessageContentView.getSettings(); 327 boolean supportMultiTouch = mContext.getPackageManager() 328 .hasSystemFeature(PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH); 329 webSettings.setDisplayZoomControls(!supportMultiTouch); 330 webSettings.setSupportZoom(true); 331 webSettings.setBuiltInZoomControls(true); 332 mMessageContentView.setWebViewClient(new CustomWebViewClient()); 333 return view; 334 } 335 336 @Override 337 public void onActivityCreated(Bundle savedInstanceState) { 338 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 339 Log.d(Logging.LOG_TAG, "MessageViewFragment onActivityCreated"); 340 } 341 super.onActivityCreated(savedInstanceState); 342 mController.addResultCallback(mControllerCallback); 343 } 344 345 @Override 346 public void onStart() { 347 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 348 Log.d(Logging.LOG_TAG, "MessageViewFragment onStart"); 349 } 350 super.onStart(); 351 } 352 353 @Override 354 public void onResume() { 355 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 356 Log.d(Logging.LOG_TAG, "MessageViewFragment onResume"); 357 } 358 super.onResume(); 359 360 mResumed = true; 361 if (isMessageSpecified()) { 362 if (mLoadWhenResumed) { 363 // Load content which resets all view state; including WebView zoom/pan and 364 // the current tab. 365 loadMessageIfResumed(); 366 } else { 367 // We've comes back from other (full-screen) activities. Content has already 368 // been loaded, so don't load it again. However, we need to update the 369 // attachment tab as system settings may have been updated that affect which 370 // options are available to the user. 371 updateAttachmentTab(); 372 } 373 } 374 } 375 376 @Override 377 public void onPause() { 378 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 379 Log.d(Logging.LOG_TAG, "MessageViewFragment onPause"); 380 } 381 mResumed = false; 382 super.onPause(); 383 } 384 385 @Override 386 public void onStop() { 387 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 388 Log.d(Logging.LOG_TAG, "MessageViewFragment onStop"); 389 } 390 super.onStop(); 391 } 392 393 @Override 394 public void onDestroy() { 395 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 396 Log.d(Logging.LOG_TAG, "MessageViewFragment onDestroy"); 397 } 398 mCallback.onMessageViewGone(); 399 mController.removeResultCallback(mControllerCallback); 400 clearContent(); 401 mMessageContentView.destroy(); 402 mMessageContentView = null; 403 super.onDestroy(); 404 } 405 406 @Override 407 public void onSaveInstanceState(Bundle outState) { 408 if (Email.DEBUG_LIFECYCLE && Email.DEBUG) { 409 Log.d(Logging.LOG_TAG, "MessageViewFragment onSaveInstanceState"); 410 } 411 super.onSaveInstanceState(outState); 412 outState.putInt(BUNDLE_KEY_CURRENT_TAB, mCurrentTab); 413 outState.putBoolean(BUNDLE_KEY_PICTURE_LOADED, (mTabFlags & TAB_FLAGS_PICTURE_LOADED) != 0); 414 } 415 416 private void restoreInstanceState(Bundle state) { 417 // At this point (in onCreate) no tabs are visible (because we don't know if the message has 418 // an attachment or invite before loading it). We just remember the tab here. 419 // We'll make it current when the tab first becomes visible in updateTabs(). 420 mRestoredTab = state.getInt(BUNDLE_KEY_CURRENT_TAB); 421 mRestoredPictureLoaded = state.getBoolean(BUNDLE_KEY_PICTURE_LOADED); 422 } 423 424 public void setCallback(Callback callback) { 425 mCallback = (callback == null) ? EmptyCallback.INSTANCE : callback; 426 } 427 428 private void cancelAllTasks() { 429 mMessageObserver.unregister(); 430 mUpdatePreviewIconTaskTracker.cancellAllInterrupt(); 431 Utility.cancelTaskInterrupt(mLoadMessageTask); 432 mLoadMessageTask = null; 433 Utility.cancelTaskInterrupt(mReloadMessageTask); 434 mReloadMessageTask = null; 435 Utility.cancelTaskInterrupt(mLoadBodyTask); 436 mLoadBodyTask = null; 437 Utility.cancelTaskInterrupt(mLoadAttachmentsTask); 438 mLoadAttachmentsTask = null; 439 } 440 441 /** 442 * Subclass returns true if which message to open is already specified by the activity. 443 */ 444 protected abstract boolean isMessageSpecified(); 445 446 protected final Controller getController() { 447 return mController; 448 } 449 450 protected final Callback getCallback() { 451 return mCallback; 452 } 453 454 protected final Message getMessage() { 455 return mMessage; 456 } 457 458 protected final boolean isMessageOpen() { 459 return mMessage != null; 460 } 461 462 /** 463 * Returns the account id of the current message, or -1 if unknown (message not open yet, or 464 * viewing an EML message). 465 */ 466 public long getAccountId() { 467 return mAccountId; 468 } 469 470 /** 471 * Clear all the content -- should be called when the fragment is hidden. 472 */ 473 public void clearContent() { 474 cancelAllTasks(); 475 resetView(); 476 } 477 478 protected final void loadMessageIfResumed() { 479 if (!mResumed) { 480 mLoadWhenResumed = true; 481 return; 482 } 483 mLoadWhenResumed = false; 484 cancelAllTasks(); 485 resetView(); 486 mLoadMessageTask = new LoadMessageTask(true); 487 mLoadMessageTask.execute(); 488 } 489 490 /** 491 * Show/hide the content. We hide all the content (except for the bottom buttons) when loading, 492 * to avoid flicker. 493 */ 494 private void showContent(boolean showContent, boolean showProgressWhenHidden) { 495 if (mLoadingProgress == null) { 496 // Phone UI doesn't have it yet. 497 // TODO Add loading_progress and main_panel to the phone layout too. 498 } else { 499 makeVisible(mMainView, showContent); 500 makeVisible(mLoadingProgress, !showContent && showProgressWhenHidden); 501 } 502 } 503 504 protected void resetView() { 505 showContent(false, false); 506 updateTabs(0); 507 setCurrentTab(TAB_MESSAGE); 508 if (mMessageContentView != null) { 509 blockNetworkLoads(true); 510 mMessageContentView.scrollTo(0, 0); 511 mMessageContentView.clearView(); 512 513 // Dynamic configuration of WebView 514 final WebSettings settings = mMessageContentView.getSettings(); 515 settings.setLayoutAlgorithm(WebSettings.LayoutAlgorithm.NORMAL); 516 mMessageContentView.setInitialScale(getWebViewZoom()); 517 } 518 mAttachmentsScroll.scrollTo(0, 0); 519 mInviteScroll.scrollTo(0, 0); 520 mAttachments.removeAllViews(); 521 mAttachments.setVisibility(View.GONE); 522 initContactStatusViews(); 523 } 524 525 /** 526 * Returns the zoom scale (in percent) which is a combination of the user setting 527 * (tiny, small, normal, large, huge) and the device density. The intention 528 * is for the text to be physically equal in size over different density 529 * screens. 530 */ 531 private int getWebViewZoom() { 532 float density = mContext.getResources().getDisplayMetrics().density; 533 int zoom = Preferences.getPreferences(mContext).getTextZoom(); 534 return (int) (ZOOM_SCALE_ARRAY[zoom] * density * 100); 535 } 536 537 private void initContactStatusViews() { 538 mContactStatusState = CONTACT_STATUS_STATE_UNLOADED; 539 mQuickContactLookupUri = null; 540 mSenderPresenceView.setImageResource(ContactStatusLoader.PRESENCE_UNKNOWN_RESOURCE_ID); 541 showDefaultQuickContactBadgeImage(); 542 } 543 544 private void showDefaultQuickContactBadgeImage() { 545 mFromBadge.setImageResource(R.drawable.ic_contact_picture); 546 } 547 548 protected final void addTabFlags(int tabFlags) { 549 updateTabs(mTabFlags | tabFlags); 550 } 551 552 private final void clearTabFlags(int tabFlags) { 553 updateTabs(mTabFlags & ~tabFlags); 554 } 555 556 private void setAttachmentCount(int count) { 557 mAttachmentCount = count; 558 if (mAttachmentCount > 0) { 559 addTabFlags(TAB_FLAGS_HAS_ATTACHMENT); 560 } else { 561 clearTabFlags(TAB_FLAGS_HAS_ATTACHMENT); 562 } 563 } 564 565 private static void makeVisible(View v, boolean visible) { 566 final int visibility = visible ? View.VISIBLE : View.GONE; 567 if ((v != null) && (v.getVisibility() != visibility)) { 568 v.setVisibility(visibility); 569 } 570 } 571 572 private static boolean isVisible(View v) { 573 return (v != null) && (v.getVisibility() == View.VISIBLE); 574 } 575 576 /** 577 * Update the visual of the tabs. (visibility, text, etc) 578 */ 579 private void updateTabs(int tabFlags) { 580 mTabFlags = tabFlags; 581 boolean messageTabVisible = (tabFlags & (TAB_FLAGS_HAS_INVITE | TAB_FLAGS_HAS_ATTACHMENT)) 582 != 0; 583 makeVisible(mMessageTab, messageTabVisible); 584 makeVisible(mInviteTab, (tabFlags & TAB_FLAGS_HAS_INVITE) != 0); 585 makeVisible(mAttachmentTab, (tabFlags & TAB_FLAGS_HAS_ATTACHMENT) != 0); 586 587 final boolean hasPictures = (tabFlags & TAB_FLAGS_HAS_PICTURES) != 0; 588 final boolean pictureLoaded = (tabFlags & TAB_FLAGS_PICTURE_LOADED) != 0; 589 makeVisible(mShowPicturesTab, hasPictures && !pictureLoaded); 590 591 mAttachmentTab.setText(mContext.getResources().getQuantityString( 592 R.plurals.message_view_show_attachments_action, 593 mAttachmentCount, mAttachmentCount)); 594 595 // Hide the entire section if no tabs are visible. 596 makeVisible(mTabSection, isVisible(mMessageTab) || isVisible(mInviteTab) 597 || isVisible(mAttachmentTab) || isVisible(mShowPicturesTab)); 598 599 // Restore previously selected tab after rotation 600 if (mRestoredTab != TAB_NONE && isVisible(getTabViewForFlag(mRestoredTab))) { 601 setCurrentTab(mRestoredTab); 602 mRestoredTab = TAB_NONE; 603 } 604 } 605 606 /** 607 * Set the current tab. 608 * 609 * @param tab any of {@link #TAB_MESSAGE}, {@link #TAB_ATTACHMENT} or {@link #TAB_INVITE}. 610 */ 611 private void setCurrentTab(int tab) { 612 mCurrentTab = tab; 613 614 // Hide & unselect all tabs 615 makeVisible(getTabContentViewForFlag(TAB_MESSAGE), false); 616 makeVisible(getTabContentViewForFlag(TAB_ATTACHMENT), false); 617 makeVisible(getTabContentViewForFlag(TAB_INVITE), false); 618 getTabViewForFlag(TAB_MESSAGE).setSelected(false); 619 getTabViewForFlag(TAB_ATTACHMENT).setSelected(false); 620 getTabViewForFlag(TAB_INVITE).setSelected(false); 621 622 makeVisible(getTabContentViewForFlag(mCurrentTab), true); 623 getTabViewForFlag(mCurrentTab).setSelected(true); 624 } 625 626 private View getTabViewForFlag(int tabFlag) { 627 switch (tabFlag) { 628 case TAB_MESSAGE: 629 return mMessageTab; 630 case TAB_ATTACHMENT: 631 return mAttachmentTab; 632 case TAB_INVITE: 633 return mInviteTab; 634 } 635 throw new IllegalArgumentException(); 636 } 637 638 private View getTabContentViewForFlag(int tabFlag) { 639 switch (tabFlag) { 640 case TAB_MESSAGE: 641 return mMessageContentView; 642 case TAB_ATTACHMENT: 643 return mAttachmentsScroll; 644 case TAB_INVITE: 645 return mInviteScroll; 646 } 647 throw new IllegalArgumentException(); 648 } 649 650 private void blockNetworkLoads(boolean block) { 651 if (mMessageContentView != null) { 652 mMessageContentView.getSettings().setBlockNetworkLoads(block); 653 } 654 } 655 656 private void setMessageHtml(String html) { 657 if (html == null) { 658 html = ""; 659 } 660 if (mMessageContentView != null) { 661 mMessageContentView.loadDataWithBaseURL("email://", html, "text/html", "utf-8", null); 662 } 663 } 664 665 /** 666 * Handle clicks on sender, which shows {@link QuickContact} or prompts to add 667 * the sender as a contact. 668 */ 669 private void onClickSender() { 670 final Address senderEmail = Address.unpackFirst(mMessage.mFrom); 671 if (senderEmail == null) return; 672 673 if (mContactStatusState == CONTACT_STATUS_STATE_UNLOADED) { 674 // Status not loaded yet. 675 mContactStatusState = CONTACT_STATUS_STATE_UNLOADED_TRIGGERED; 676 return; 677 } 678 if (mContactStatusState == CONTACT_STATUS_STATE_UNLOADED_TRIGGERED) { 679 return; // Already clicked, and waiting for the data. 680 } 681 682 if (mQuickContactLookupUri != null) { 683 QuickContact.showQuickContact(mContext, mFromBadge, mQuickContactLookupUri, 684 QuickContact.MODE_LARGE, null); 685 } else { 686 // No matching contact, ask user to create one 687 final Uri mailUri = Uri.fromParts("mailto", senderEmail.getAddress(), null); 688 final Intent intent = new Intent(ContactsContract.Intents.SHOW_OR_CREATE_CONTACT, 689 mailUri); 690 691 // Pass along full E-mail string for possible create dialog 692 intent.putExtra(ContactsContract.Intents.EXTRA_CREATE_DESCRIPTION, 693 senderEmail.toString()); 694 695 // Only provide personal name hint if we have one 696 final String senderPersonal = senderEmail.getPersonal(); 697 if (!TextUtils.isEmpty(senderPersonal)) { 698 intent.putExtra(ContactsContract.Intents.Insert.NAME, senderPersonal); 699 } 700 intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 701 702 startActivity(intent); 703 } 704 } 705 706 private static class ContactStatusLoaderCallbacks 707 implements LoaderCallbacks<ContactStatusLoader.Result> { 708 private static final String BUNDLE_EMAIL_ADDRESS = "email"; 709 private final MessageViewFragmentBase mFragment; 710 711 public ContactStatusLoaderCallbacks(MessageViewFragmentBase fragment) { 712 mFragment = fragment; 713 } 714 715 public static Bundle createArguments(String emailAddress) { 716 Bundle b = new Bundle(); 717 b.putString(BUNDLE_EMAIL_ADDRESS, emailAddress); 718 return b; 719 } 720 721 @Override 722 public Loader<ContactStatusLoader.Result> onCreateLoader(int id, Bundle args) { 723 return new ContactStatusLoader(mFragment.mContext, 724 args.getString(BUNDLE_EMAIL_ADDRESS)); 725 } 726 727 @Override 728 public void onLoadFinished(Loader<ContactStatusLoader.Result> loader, 729 ContactStatusLoader.Result result) { 730 boolean triggered = 731 (mFragment.mContactStatusState == CONTACT_STATUS_STATE_UNLOADED_TRIGGERED); 732 mFragment.mContactStatusState = CONTACT_STATUS_STATE_LOADED; 733 mFragment.mQuickContactLookupUri = result.mLookupUri; 734 mFragment.mSenderPresenceView.setImageResource(result.mPresenceResId); 735 if (result.mPhoto != null) { // photo will be null if unknown. 736 mFragment.mFromBadge.setImageBitmap(result.mPhoto); 737 } 738 if (triggered) { 739 mFragment.onClickSender(); 740 } 741 } 742 743 @Override 744 public void onLoaderReset(Loader<ContactStatusLoader.Result> loader) { 745 } 746 } 747 748 private void onSaveAttachment(MessageViewAttachmentInfo info) { 749 if (!Utility.isExternalStorageMounted()) { 750 /* 751 * Abort early if there's no place to save the attachment. We don't want to spend 752 * the time downloading it and then abort. 753 */ 754 Utility.showToast(getActivity(), R.string.message_view_status_attachment_not_saved); 755 return; 756 } 757 Attachment attachment = Attachment.restoreAttachmentWithId(mContext, info.mId); 758 Uri attachmentUri = AttachmentUtilities.getAttachmentUri(mAccountId, attachment.mId); 759 760 try { 761 File downloads = Environment.getExternalStoragePublicDirectory( 762 Environment.DIRECTORY_DOWNLOADS); 763 downloads.mkdirs(); 764 File file = Utility.createUniqueFile(downloads, attachment.mFileName); 765 Uri contentUri = AttachmentUtilities.resolveAttachmentIdToContentUri( 766 mContext.getContentResolver(), attachmentUri); 767 InputStream in = mContext.getContentResolver().openInputStream(contentUri); 768 OutputStream out = new FileOutputStream(file); 769 IOUtils.copy(in, out); 770 out.flush(); 771 out.close(); 772 in.close(); 773 774 Utility.showToast(getActivity(), String.format( 775 mContext.getString(R.string.message_view_status_attachment_saved), 776 file.getName())); 777 778 // Although the download manager can scan media files, scanning only happens after the 779 // user clicks on the item in the Downloads app. So, we run the attachment through 780 // the media scanner ourselves so it gets added to gallery / music immediately. 781 MediaScannerConnection.scanFile(mContext, new String[] {file.getAbsolutePath()}, 782 null, null); 783 784 DownloadManager dm = 785 (DownloadManager) getActivity().getSystemService(Context.DOWNLOAD_SERVICE); 786 dm.addCompletedDownload(info.mName, info.mName, 787 false /* do not use media scanner */, 788 info.mContentType, file.getAbsolutePath(), info.mSize, 789 true /* show notification */); 790 } catch (IOException ioe) { 791 Utility.showToast(getActivity(), R.string.message_view_status_attachment_not_saved); 792 } 793 } 794 795 private void onViewAttachment(MessageViewAttachmentInfo info) { 796 Intent intent = info.getAttachmentIntent(mContext, mAccountId); 797 try { 798 startActivity(intent); 799 } catch (ActivityNotFoundException e) { 800 Utility.showToast(getActivity(), R.string.message_view_display_attachment_toast); 801 } 802 } 803 804 private void onInfoAttachment(final MessageViewAttachmentInfo attachment) { 805 AttachmentInfoDialog dialog = 806 AttachmentInfoDialog.newInstance(getActivity(), attachment.mDenyFlags); 807 dialog.show(getActivity().getFragmentManager(), null); 808 } 809 810 private void onLoadAttachment(final MessageViewAttachmentInfo attachment) { 811 attachment.loadButton.setVisibility(View.GONE); 812 // If there's nothing in the download queue, we'll probably start right away so wait a 813 // second before showing the cancel button 814 if (AttachmentDownloadService.getQueueSize() == 0) { 815 // Set to invisible; if the button is still in this state one second from now, we'll 816 // assume the download won't start right away, and we make the cancel button visible 817 attachment.cancelButton.setVisibility(View.GONE); 818 // Create the timed task that will change the button state 819 new AsyncTask<Void, Void, Void>() { 820 @Override 821 protected Void doInBackground(Void... params) { 822 try { 823 Thread.sleep(1000L); 824 } catch (InterruptedException e) { } 825 return null; 826 } 827 @Override 828 protected void onPostExecute(Void result) { 829 // If the timeout completes and the attachment has not loaded, show cancel 830 if (!attachment.loaded) { 831 attachment.cancelButton.setVisibility(View.VISIBLE); 832 } 833 } 834 }.execute(); 835 } else { 836 attachment.cancelButton.setVisibility(View.VISIBLE); 837 } 838 attachment.showProgressIndeterminate(); 839 mController.loadAttachment(attachment.mId, mMessageId, mAccountId); 840 } 841 842 private void onCancelAttachment(MessageViewAttachmentInfo attachment) { 843 // Don't change button states if we couldn't cancel the download 844 if (AttachmentDownloadService.cancelQueuedAttachment(attachment.mId)) { 845 attachment.loadButton.setVisibility(View.VISIBLE); 846 attachment.cancelButton.setVisibility(View.GONE); 847 attachment.hideProgress(); 848 } 849 } 850 851 /** 852 * Called by ControllerResults. Show the "View" and "Save" buttons; hide "Load" and "Stop" 853 * 854 * @param attachmentId the attachment that was just downloaded 855 */ 856 private void doFinishLoadAttachment(long attachmentId) { 857 MessageViewAttachmentInfo info = findAttachmentInfo(attachmentId); 858 if (info != null) { 859 info.loaded = true; 860 updateAttachmentButtons(info); 861 } 862 } 863 864 private void onShowPicturesInHtml() { 865 if (mMessageContentView != null) { 866 blockNetworkLoads(false); 867 setMessageHtml(mHtmlTextWebView); 868 addTabFlags(TAB_FLAGS_PICTURE_LOADED); 869 } 870 } 871 872 private void onShowDetails() { 873 if (mMessage == null) { 874 return; // shouldn't happen 875 } 876 String subject = mMessage.mSubject; 877 String date = formatDate(mMessage.mTimeStamp, true); 878 879 final String SEPARATOR = "\n"; 880 String from = Address.toString(Address.unpack(mMessage.mFrom), SEPARATOR); 881 String to = Address.toString(Address.unpack(mMessage.mTo), SEPARATOR); 882 String cc = Address.toString(Address.unpack(mMessage.mCc), SEPARATOR); 883 String bcc = Address.toString(Address.unpack(mMessage.mBcc), SEPARATOR); 884 MessageViewMessageDetailsDialog dialog = MessageViewMessageDetailsDialog.newInstance( 885 getActivity(), subject, date, from, to, cc, bcc); 886 dialog.show(getActivity().getFragmentManager(), null); 887 } 888 889 @Override 890 public void onClick(View view) { 891 if (!isMessageOpen()) { 892 return; // Ignore. 893 } 894 switch (view.getId()) { 895 case R.id.from_name: 896 case R.id.from_address: 897 case R.id.badge: 898 case R.id.presence: 899 onClickSender(); 900 break; 901 case R.id.load: 902 onLoadAttachment((MessageViewAttachmentInfo) view.getTag()); 903 break; 904 case R.id.info: 905 onInfoAttachment((MessageViewAttachmentInfo) view.getTag()); 906 break; 907 case R.id.save: 908 onSaveAttachment((MessageViewAttachmentInfo) view.getTag()); 909 break; 910 case R.id.open: 911 onViewAttachment((MessageViewAttachmentInfo) view.getTag()); 912 break; 913 case R.id.cancel: 914 onCancelAttachment((MessageViewAttachmentInfo) view.getTag()); 915 break; 916 case R.id.show_message: 917 setCurrentTab(TAB_MESSAGE); 918 break; 919 case R.id.show_invite: 920 setCurrentTab(TAB_INVITE); 921 break; 922 case R.id.show_attachments: 923 setCurrentTab(TAB_ATTACHMENT); 924 break; 925 case R.id.show_pictures: 926 onShowPicturesInHtml(); 927 break; 928 case R.id.show_details: 929 onShowDetails(); 930 break; 931 } 932 } 933 934 /** 935 * Start loading contact photo and presence. 936 */ 937 private void queryContactStatus() { 938 initContactStatusViews(); // Initialize the state, just in case. 939 940 // Find the sender email address, and start presence check. 941 if (mMessage != null) { 942 Address sender = Address.unpackFirst(mMessage.mFrom); 943 if (sender != null) { 944 String email = sender.getAddress(); 945 if (email != null) { 946 getLoaderManager().restartLoader(PHOTO_LOADER_ID, 947 ContactStatusLoaderCallbacks.createArguments(email), 948 new ContactStatusLoaderCallbacks(this)); 949 } 950 } 951 } 952 } 953 954 /** 955 * Called by {@link LoadMessageTask} and {@link ReloadMessageTask} to load a message in a 956 * subclass specific way. 957 * 958 * NOTE This method is called on a worker thread! Implementations must properly synchronize 959 * when accessing members. This method may be called after or even at the same time as 960 * {@link #clearContent()}. 961 * 962 * @param activity the parent activity. Subclass use it as a context, and to show a toast. 963 */ 964 protected abstract Message openMessageSync(Activity activity); 965 966 /** 967 * Async task for loading a single message outside of the UI thread 968 */ 969 private class LoadMessageTask extends AsyncTask<Void, Void, Message> { 970 971 private final boolean mOkToFetch; 972 private int mMailboxType; 973 974 /** 975 * Special constructor to cache some local info 976 */ 977 public LoadMessageTask(boolean okToFetch) { 978 mOkToFetch = okToFetch; 979 } 980 981 @Override 982 protected Message doInBackground(Void... params) { 983 Activity activity = getActivity(); 984 Message message = null; 985 if (activity != null) { 986 message = openMessageSync(activity); 987 } 988 if (message != null) { 989 mMailboxType = Mailbox.getMailboxType(mContext, message.mMailboxKey); 990 if (mMailboxType == -1) { 991 message = null; // mailbox removed?? 992 } 993 } 994 return message; 995 } 996 997 @Override 998 protected void onPostExecute(Message message) { 999 if (isCancelled()) { 1000 return; 1001 } 1002 if (message == null) { 1003 resetView(); 1004 mCallback.onMessageNotExists(); 1005 return; 1006 } 1007 mMessageId = message.mId; 1008 1009 reloadUiFromMessage(message, mOkToFetch); 1010 queryContactStatus(); 1011 onMessageShown(mMessageId, mMailboxType); 1012 } 1013 } 1014 1015 /** 1016 * Kicked by {@link MessageObserver}. Reload the message and update the views. 1017 */ 1018 private class ReloadMessageTask extends AsyncTask<Void, Void, Message> { 1019 @Override 1020 protected Message doInBackground(Void... params) { 1021 if (!isMessageSpecified()) { // just in case 1022 return null; 1023 } 1024 Activity activity = getActivity(); 1025 if (activity == null) { 1026 return null; 1027 } else { 1028 return openMessageSync(activity); 1029 } 1030 } 1031 1032 @Override 1033 protected void onPostExecute(Message message) { 1034 if (isCancelled()) { 1035 return; 1036 } 1037 if (message == null || message.mMailboxKey != mMessage.mMailboxKey) { 1038 // Message deleted or moved. 1039 mCallback.onMessageNotExists(); 1040 return; 1041 } 1042 mMessage = message; 1043 updateHeaderView(mMessage); 1044 } 1045 } 1046 1047 /** 1048 * Called when a message is shown to the user. 1049 */ 1050 protected void onMessageShown(long messageId, int mailboxType) { 1051 mCallback.onMessageViewShown(mailboxType); 1052 } 1053 1054 /** 1055 * Called when the message body is loaded. 1056 */ 1057 protected void onPostLoadBody() { 1058 } 1059 1060 /** 1061 * Async task for loading a single message body outside of the UI thread 1062 */ 1063 private class LoadBodyTask extends AsyncTask<Void, Void, String[]> { 1064 1065 private long mId; 1066 private boolean mErrorLoadingMessageBody; 1067 1068 /** 1069 * Special constructor to cache some local info 1070 */ 1071 public LoadBodyTask(long messageId) { 1072 mId = messageId; 1073 } 1074 1075 @Override 1076 protected String[] doInBackground(Void... params) { 1077 try { 1078 String text = null; 1079 String html = Body.restoreBodyHtmlWithMessageId(mContext, mId); 1080 if (html == null) { 1081 text = Body.restoreBodyTextWithMessageId(mContext, mId); 1082 } 1083 return new String[] { text, html }; 1084 } catch (RuntimeException re) { 1085 // This catches SQLiteException as well as other RTE's we've seen from the 1086 // database calls, such as IllegalStateException 1087 Log.d(Logging.LOG_TAG, "Exception while loading message body", re); 1088 mErrorLoadingMessageBody = true; 1089 return null; 1090 } 1091 } 1092 1093 @Override 1094 protected void onPostExecute(String[] results) { 1095 if (results == null || isCancelled()) { 1096 if (mErrorLoadingMessageBody) { 1097 Utility.showToast(getActivity(), R.string.error_loading_message_body); 1098 } 1099 resetView(); 1100 return; 1101 } 1102 reloadUiFromBody(results[0], results[1]); // text, html 1103 onPostLoadBody(); 1104 } 1105 } 1106 1107 /** 1108 * Async task for loading attachments 1109 * 1110 * Note: This really should only be called when the message load is complete - or, we should 1111 * leave open a listener so the attachments can fill in as they are discovered. In either case, 1112 * this implementation is incomplete, as it will fail to refresh properly if the message is 1113 * partially loaded at this time. 1114 */ 1115 private class LoadAttachmentsTask extends AsyncTask<Long, Void, Attachment[]> { 1116 @Override 1117 protected Attachment[] doInBackground(Long... messageIds) { 1118 return Attachment.restoreAttachmentsWithMessageId(mContext, messageIds[0]); 1119 } 1120 1121 @Override 1122 protected void onPostExecute(Attachment[] attachments) { 1123 try { 1124 if (isCancelled() || attachments == null) { 1125 return; 1126 } 1127 boolean htmlChanged = false; 1128 int numDisplayedAttachments = 0; 1129 for (Attachment attachment : attachments) { 1130 if (mHtmlTextRaw != null && attachment.mContentId != null 1131 && attachment.mContentUri != null) { 1132 // for html body, replace CID for inline images 1133 // Regexp which matches ' src="cid:contentId"'. 1134 String contentIdRe = 1135 "\\s+(?i)src=\"cid(?-i):\\Q" + attachment.mContentId + "\\E\""; 1136 String srcContentUri = " src=\"" + attachment.mContentUri + "\""; 1137 mHtmlTextRaw = mHtmlTextRaw.replaceAll(contentIdRe, srcContentUri); 1138 htmlChanged = true; 1139 } else { 1140 addAttachment(attachment); 1141 numDisplayedAttachments++; 1142 } 1143 } 1144 setAttachmentCount(numDisplayedAttachments); 1145 mHtmlTextWebView = mHtmlTextRaw; 1146 mHtmlTextRaw = null; 1147 if (htmlChanged) { 1148 setMessageHtml(mHtmlTextWebView); 1149 } 1150 } finally { 1151 showContent(true, false); 1152 } 1153 } 1154 } 1155 1156 private static Bitmap getPreviewIcon(Context context, AttachmentInfo attachment) { 1157 try { 1158 return BitmapFactory.decodeStream( 1159 context.getContentResolver().openInputStream( 1160 AttachmentUtilities.getAttachmentThumbnailUri( 1161 attachment.mAccountKey, attachment.mId, 1162 PREVIEW_ICON_WIDTH, 1163 PREVIEW_ICON_HEIGHT))); 1164 } catch (Exception e) { 1165 Log.d(Logging.LOG_TAG, "Attachment preview failed with exception " + e.getMessage()); 1166 return null; 1167 } 1168 } 1169 1170 /** 1171 * Subclass of AttachmentInfo which includes our views and buttons related to attachment 1172 * handling, as well as our determination of suitability for viewing (based on availability of 1173 * a viewer app) and saving (based upon the presence of external storage) 1174 */ 1175 private static class MessageViewAttachmentInfo extends AttachmentInfo { 1176 private Button openButton; 1177 private Button saveButton; 1178 private Button loadButton; 1179 private Button infoButton; 1180 private Button cancelButton; 1181 private ImageView iconView; 1182 1183 // Don't touch it directly from the outer class. 1184 private ProgressBar mProgressView; 1185 private boolean loaded; 1186 1187 private MessageViewAttachmentInfo(Context context, Attachment attachment, 1188 ProgressBar progressView) { 1189 super(context, attachment); 1190 mProgressView = progressView; 1191 } 1192 1193 /** 1194 * Create a new attachment info based upon an existing attachment info. Display 1195 * related fields (such as views and buttons) are copied from old to new. 1196 */ 1197 private MessageViewAttachmentInfo(Context context, MessageViewAttachmentInfo oldInfo) { 1198 super(context, oldInfo); 1199 openButton = oldInfo.openButton; 1200 saveButton = oldInfo.saveButton; 1201 loadButton = oldInfo.loadButton; 1202 infoButton = oldInfo.infoButton; 1203 cancelButton = oldInfo.cancelButton; 1204 iconView = oldInfo.iconView; 1205 mProgressView = oldInfo.mProgressView; 1206 loaded = oldInfo.loaded; 1207 } 1208 1209 public void hideProgress() { 1210 // Don't use GONE, which'll break the layout. 1211 if (mProgressView.getVisibility() != View.INVISIBLE) { 1212 mProgressView.setVisibility(View.INVISIBLE); 1213 } 1214 } 1215 1216 public void showProgress(int progress) { 1217 if (mProgressView.getVisibility() != View.VISIBLE) { 1218 mProgressView.setVisibility(View.VISIBLE); 1219 } 1220 if (mProgressView.isIndeterminate()) { 1221 mProgressView.setIndeterminate(false); 1222 } 1223 mProgressView.setProgress(progress); 1224 } 1225 1226 public void showProgressIndeterminate() { 1227 if (mProgressView.getVisibility() != View.VISIBLE) { 1228 mProgressView.setVisibility(View.VISIBLE); 1229 } 1230 if (!mProgressView.isIndeterminate()) { 1231 mProgressView.setIndeterminate(true); 1232 } 1233 } 1234 } 1235 1236 /** 1237 * Updates all current attachments on the attachment tab. 1238 */ 1239 private void updateAttachmentTab() { 1240 for (int i = 0, count = mAttachments.getChildCount(); i < count; i++) { 1241 View view = mAttachments.getChildAt(i); 1242 MessageViewAttachmentInfo oldInfo = (MessageViewAttachmentInfo)view.getTag(); 1243 MessageViewAttachmentInfo newInfo = 1244 new MessageViewAttachmentInfo(getActivity(), oldInfo); 1245 updateAttachmentButtons(newInfo); 1246 view.setTag(newInfo); 1247 } 1248 } 1249 1250 /** 1251 * Updates the attachment buttons. Adjusts the visibility of the buttons as well 1252 * as updating any tag information associated with the buttons. 1253 */ 1254 private void updateAttachmentButtons(MessageViewAttachmentInfo attachmentInfo) { 1255 ImageView attachmentIcon = attachmentInfo.iconView; 1256 Button openButton = attachmentInfo.openButton; 1257 Button saveButton = attachmentInfo.saveButton; 1258 Button loadButton = attachmentInfo.loadButton; 1259 Button infoButton = attachmentInfo.infoButton; 1260 Button cancelButton = attachmentInfo.cancelButton; 1261 1262 if (!attachmentInfo.mAllowView) { 1263 openButton.setVisibility(View.GONE); 1264 } 1265 if (!attachmentInfo.mAllowSave) { 1266 saveButton.setVisibility(View.GONE); 1267 } 1268 1269 if (!attachmentInfo.mAllowView && !attachmentInfo.mAllowSave) { 1270 // This attachment may never be viewed or saved, so block everything 1271 attachmentInfo.hideProgress(); 1272 openButton.setVisibility(View.GONE); 1273 saveButton.setVisibility(View.GONE); 1274 loadButton.setVisibility(View.GONE); 1275 cancelButton.setVisibility(View.GONE); 1276 infoButton.setVisibility(View.VISIBLE); 1277 } else if (attachmentInfo.loaded) { 1278 // If the attachment is loaded, show 100% progress 1279 // Note that for POP3 messages, the user will only see "Open" and "Save", 1280 // because the entire message is loaded before being shown. 1281 // Hide "Load" and "Info", show "View" and "Save" 1282 attachmentInfo.showProgress(100); 1283 if (attachmentInfo.mAllowSave) { 1284 saveButton.setVisibility(View.VISIBLE); 1285 } 1286 if (attachmentInfo.mAllowView) { 1287 // Set the attachment action button text accordingly 1288 if (attachmentInfo.mContentType.startsWith("audio/") || 1289 attachmentInfo.mContentType.startsWith("video/")) { 1290 openButton.setText(R.string.message_view_attachment_play_action); 1291 } else if (attachmentInfo.mAllowInstall) { 1292 openButton.setText(R.string.message_view_attachment_install_action); 1293 } else { 1294 openButton.setText(R.string.message_view_attachment_view_action); 1295 } 1296 openButton.setVisibility(View.VISIBLE); 1297 } 1298 if (attachmentInfo.mDenyFlags == AttachmentInfo.ALLOW) { 1299 infoButton.setVisibility(View.GONE); 1300 } else { 1301 infoButton.setVisibility(View.VISIBLE); 1302 } 1303 loadButton.setVisibility(View.GONE); 1304 cancelButton.setVisibility(View.GONE); 1305 1306 updatePreviewIcon(attachmentInfo); 1307 } else { 1308 // The attachment is not loaded, so present UI to start downloading it 1309 1310 // Show "Load"; hide "View", "Save" and "Info" 1311 saveButton.setVisibility(View.GONE); 1312 openButton.setVisibility(View.GONE); 1313 infoButton.setVisibility(View.GONE); 1314 1315 // If the attachment is queued, show the indeterminate progress bar. From this point,. 1316 // any progress changes will cause this to be replaced by the normal progress bar 1317 if (AttachmentDownloadService.isAttachmentQueued(attachmentInfo.mId)) { 1318 attachmentInfo.showProgressIndeterminate(); 1319 loadButton.setVisibility(View.GONE); 1320 cancelButton.setVisibility(View.VISIBLE); 1321 } else { 1322 loadButton.setVisibility(View.VISIBLE); 1323 cancelButton.setVisibility(View.GONE); 1324 } 1325 } 1326 openButton.setTag(attachmentInfo); 1327 saveButton.setTag(attachmentInfo); 1328 loadButton.setTag(attachmentInfo); 1329 infoButton.setTag(attachmentInfo); 1330 cancelButton.setTag(attachmentInfo); 1331 } 1332 1333 /** 1334 * Copy data from a cursor-refreshed attachment into the UI. Called from UI thread. 1335 * 1336 * @param attachment A single attachment loaded from the provider 1337 */ 1338 private void addAttachment(Attachment attachment) { 1339 LayoutInflater inflater = getActivity().getLayoutInflater(); 1340 View view = inflater.inflate(R.layout.message_view_attachment, null); 1341 1342 TextView attachmentName = (TextView)view.findViewById(R.id.attachment_name); 1343 TextView attachmentInfoView = (TextView)view.findViewById(R.id.attachment_info); 1344 ImageView attachmentIcon = (ImageView)view.findViewById(R.id.attachment_icon); 1345 Button openButton = (Button)view.findViewById(R.id.open); 1346 Button saveButton = (Button)view.findViewById(R.id.save); 1347 Button loadButton = (Button)view.findViewById(R.id.load); 1348 Button infoButton = (Button)view.findViewById(R.id.info); 1349 Button cancelButton = (Button)view.findViewById(R.id.cancel); 1350 ProgressBar attachmentProgress = (ProgressBar)view.findViewById(R.id.progress); 1351 1352 MessageViewAttachmentInfo attachmentInfo = new MessageViewAttachmentInfo( 1353 mContext, attachment, attachmentProgress); 1354 1355 // Check whether the attachment already exists 1356 if (Utility.attachmentExists(mContext, attachment)) { 1357 attachmentInfo.loaded = true; 1358 } 1359 1360 attachmentInfo.openButton = openButton; 1361 attachmentInfo.saveButton = saveButton; 1362 attachmentInfo.loadButton = loadButton; 1363 attachmentInfo.infoButton = infoButton; 1364 attachmentInfo.cancelButton = cancelButton; 1365 attachmentInfo.iconView = attachmentIcon; 1366 1367 updateAttachmentButtons(attachmentInfo); 1368 1369 view.setTag(attachmentInfo); 1370 openButton.setOnClickListener(this); 1371 saveButton.setOnClickListener(this); 1372 loadButton.setOnClickListener(this); 1373 infoButton.setOnClickListener(this); 1374 cancelButton.setOnClickListener(this); 1375 1376 attachmentName.setText(attachmentInfo.mName); 1377 attachmentInfoView.setText(UiUtilities.formatSize(mContext, attachmentInfo.mSize)); 1378 1379 mAttachments.addView(view); 1380 mAttachments.setVisibility(View.VISIBLE); 1381 } 1382 1383 private MessageViewAttachmentInfo findAttachmentInfoFromView(long attachmentId) { 1384 for (int i = 0, count = mAttachments.getChildCount(); i < count; i++) { 1385 MessageViewAttachmentInfo attachmentInfo = 1386 (MessageViewAttachmentInfo) mAttachments.getChildAt(i).getTag(); 1387 if (attachmentInfo.mId == attachmentId) { 1388 return attachmentInfo; 1389 } 1390 } 1391 return null; 1392 } 1393 1394 /** 1395 * Reload the UI from a provider cursor. {@link LoadMessageTask#onPostExecute} calls it. 1396 * 1397 * Update the header views, and start loading the body. 1398 * 1399 * @param message A copy of the message loaded from the database 1400 * @param okToFetch If true, and message is not fully loaded, it's OK to fetch from 1401 * the network. Use false to prevent looping here. 1402 */ 1403 protected void reloadUiFromMessage(Message message, boolean okToFetch) { 1404 mMessage = message; 1405 mAccountId = message.mAccountKey; 1406 1407 mMessageObserver.register(ContentUris.withAppendedId(Message.CONTENT_URI, mMessage.mId)); 1408 1409 updateHeaderView(mMessage); 1410 1411 // Handle partially-loaded email, as follows: 1412 // 1. Check value of message.mFlagLoaded 1413 // 2. If != LOADED, ask controller to load it 1414 // 3. Controller callback (after loaded) should trigger LoadBodyTask & LoadAttachmentsTask 1415 // 4. Else start the loader tasks right away (message already loaded) 1416 if (okToFetch && message.mFlagLoaded != Message.FLAG_LOADED_COMPLETE) { 1417 mControllerCallback.getWrappee().setWaitForLoadMessageId(message.mId); 1418 mController.loadMessageForView(message.mId); 1419 } else { 1420 mControllerCallback.getWrappee().setWaitForLoadMessageId(-1); 1421 // Ask for body 1422 mLoadBodyTask = new LoadBodyTask(message.mId); 1423 mLoadBodyTask.execute(); 1424 } 1425 } 1426 1427 protected void updateHeaderView(Message message) { 1428 mSubjectView.setText(message.mSubject); 1429 final Address from = Address.unpackFirst(message.mFrom); 1430 1431 // Set sender address/display name 1432 // Note we set " " for empty field, so TextView's won't get squashed. 1433 // Otherwise their height will be 0, which breaks the layout. 1434 if (from != null) { 1435 final String fromFriendly = from.toFriendly(); 1436 final String fromAddress = from.getAddress(); 1437 mFromNameView.setText(fromFriendly); 1438 mFromAddressView.setText(fromFriendly.equals(fromAddress) ? " " : fromAddress); 1439 } else { 1440 mFromNameView.setText(" "); 1441 mFromAddressView.setText(" "); 1442 } 1443 mDateTimeView.setText(formatDate(message.mTimeStamp, false)); 1444 1445 // To/Cc/Bcc 1446 final Resources res = mContext.getResources(); 1447 final SpannableStringBuilder ssb = new SpannableStringBuilder(); 1448 final String friendlyTo = Address.toFriendly(Address.unpack(message.mTo)); 1449 final String friendlyCc = Address.toFriendly(Address.unpack(message.mCc)); 1450 final String friendlyBcc = Address.toFriendly(Address.unpack(message.mBcc)); 1451 1452 if (!TextUtils.isEmpty(friendlyTo)) { 1453 Utility.appendBold(ssb, res.getString(R.string.message_view_to_label)); 1454 ssb.append(" "); 1455 ssb.append(friendlyTo); 1456 } 1457 if (!TextUtils.isEmpty(friendlyCc)) { 1458 ssb.append(" "); 1459 Utility.appendBold(ssb, res.getString(R.string.message_view_cc_label)); 1460 ssb.append(" "); 1461 ssb.append(friendlyCc); 1462 } 1463 if (!TextUtils.isEmpty(friendlyBcc)) { 1464 ssb.append(" "); 1465 Utility.appendBold(ssb, res.getString(R.string.message_view_bcc_label)); 1466 ssb.append(" "); 1467 ssb.append(friendlyBcc); 1468 } 1469 mAddressesView.setText(ssb); 1470 } 1471 1472 private String formatDate(long millis, boolean withYear) { 1473 StringBuilder sb = new StringBuilder(); 1474 Formatter formatter = new Formatter(sb); 1475 DateUtils.formatDateRange(mContext, formatter, millis, millis, 1476 DateUtils.FORMAT_SHOW_DATE 1477 | DateUtils.FORMAT_ABBREV_ALL 1478 | DateUtils.FORMAT_SHOW_TIME 1479 | (withYear ? DateUtils.FORMAT_SHOW_YEAR : DateUtils.FORMAT_NO_YEAR)); 1480 return sb.toString(); 1481 } 1482 1483 /** 1484 * Reload the body from the provider cursor. This must only be called from the UI thread. 1485 * 1486 * @param bodyText text part 1487 * @param bodyHtml html part 1488 * 1489 * TODO deal with html vs text and many other issues <- WHAT DOES IT MEAN?? 1490 */ 1491 private void reloadUiFromBody(String bodyText, String bodyHtml) { 1492 String text = null; 1493 mHtmlTextRaw = null; 1494 boolean hasImages = false; 1495 1496 if (bodyHtml == null) { 1497 text = bodyText; 1498 /* 1499 * Convert the plain text to HTML 1500 */ 1501 StringBuffer sb = new StringBuffer("<html><body>"); 1502 if (text != null) { 1503 // Escape any inadvertent HTML in the text message 1504 text = EmailHtmlUtil.escapeCharacterToDisplay(text); 1505 // Find any embedded URL's and linkify 1506 Matcher m = Patterns.WEB_URL.matcher(text); 1507 while (m.find()) { 1508 int start = m.start(); 1509 /* 1510 * WEB_URL_PATTERN may match domain part of email address. To detect 1511 * this false match, the character just before the matched string 1512 * should not be '@'. 1513 */ 1514 if (start == 0 || text.charAt(start - 1) != '@') { 1515 String url = m.group(); 1516 Matcher proto = WEB_URL_PROTOCOL.matcher(url); 1517 String link; 1518 if (proto.find()) { 1519 // This is work around to force URL protocol part be lower case, 1520 // because WebView could follow only lower case protocol link. 1521 link = proto.group().toLowerCase() + url.substring(proto.end()); 1522 } else { 1523 // Patterns.WEB_URL matches URL without protocol part, 1524 // so added default protocol to link. 1525 link = "http://" + url; 1526 } 1527 String href = String.format("<a href=\"%s\">%s</a>", link, url); 1528 m.appendReplacement(sb, href); 1529 } 1530 else { 1531 m.appendReplacement(sb, "$0"); 1532 } 1533 } 1534 m.appendTail(sb); 1535 } 1536 sb.append("</body></html>"); 1537 text = sb.toString(); 1538 } else { 1539 text = bodyHtml; 1540 mHtmlTextRaw = bodyHtml; 1541 hasImages = IMG_TAG_START_REGEX.matcher(text).find(); 1542 } 1543 1544 // TODO this is not really accurate. 1545 // - Images aren't the only network resources. (e.g. CSS) 1546 // - If images are attached to the email and small enough, we download them at once, 1547 // and won't need network access when they're shown. 1548 if (hasImages) { 1549 if (mRestoredPictureLoaded) { 1550 blockNetworkLoads(false); 1551 addTabFlags(TAB_FLAGS_PICTURE_LOADED); // Set for next onSaveInstanceState 1552 1553 // Make sure to reset the flag -- otherwise this will keep taking effect even after 1554 // moving to another message. 1555 mRestoredPictureLoaded = false; 1556 } else { 1557 addTabFlags(TAB_FLAGS_HAS_PICTURES); 1558 } 1559 } 1560 setMessageHtml(text); 1561 1562 // Ask for attachments after body 1563 mLoadAttachmentsTask = new LoadAttachmentsTask(); 1564 mLoadAttachmentsTask.execute(mMessage.mId); 1565 1566 mIsMessageLoadedForTest = true; 1567 } 1568 1569 /** 1570 * Overrides for WebView behaviors. 1571 */ 1572 private class CustomWebViewClient extends WebViewClient { 1573 @Override 1574 public boolean shouldOverrideUrlLoading(WebView view, String url) { 1575 return mCallback.onUrlInMessageClicked(url); 1576 } 1577 } 1578 1579 private View findAttachmentView(long attachmentId) { 1580 for (int i = 0, count = mAttachments.getChildCount(); i < count; i++) { 1581 View view = mAttachments.getChildAt(i); 1582 MessageViewAttachmentInfo attachment = (MessageViewAttachmentInfo) view.getTag(); 1583 if (attachment.mId == attachmentId) { 1584 return view; 1585 } 1586 } 1587 return null; 1588 } 1589 1590 private MessageViewAttachmentInfo findAttachmentInfo(long attachmentId) { 1591 View view = findAttachmentView(attachmentId); 1592 if (view != null) { 1593 return (MessageViewAttachmentInfo)view.getTag(); 1594 } 1595 return null; 1596 } 1597 1598 /** 1599 * Controller results listener. We wrap it with {@link ControllerResultUiThreadWrapper}, 1600 * so all methods are called on the UI thread. 1601 */ 1602 private class ControllerResults extends Controller.Result { 1603 private long mWaitForLoadMessageId; 1604 1605 public void setWaitForLoadMessageId(long messageId) { 1606 mWaitForLoadMessageId = messageId; 1607 } 1608 1609 @Override 1610 public void loadMessageForViewCallback(MessagingException result, long accountId, 1611 long messageId, int progress) { 1612 if (messageId != mWaitForLoadMessageId) { 1613 // We are not waiting for this message to load, so exit quickly 1614 return; 1615 } 1616 if (result == null) { 1617 switch (progress) { 1618 case 0: 1619 mCallback.onLoadMessageStarted(); 1620 // Loading from network -- show the progress icon. 1621 showContent(false, true); 1622 break; 1623 case 100: 1624 mWaitForLoadMessageId = -1; 1625 mCallback.onLoadMessageFinished(); 1626 // reload UI and reload everything else too 1627 // pass false to LoadMessageTask to prevent looping here 1628 cancelAllTasks(); 1629 mLoadMessageTask = new LoadMessageTask(false); 1630 mLoadMessageTask.execute(); 1631 break; 1632 default: 1633 // do nothing - we don't have a progress bar at this time 1634 break; 1635 } 1636 } else { 1637 mWaitForLoadMessageId = -1; 1638 String error = mContext.getString(R.string.status_network_error); 1639 mCallback.onLoadMessageError(error); 1640 resetView(); 1641 } 1642 } 1643 1644 @Override 1645 public void loadAttachmentCallback(MessagingException result, long accountId, 1646 long messageId, long attachmentId, int progress) { 1647 if (messageId == mMessageId) { 1648 if (result == null) { 1649 showAttachmentProgress(attachmentId, progress); 1650 switch (progress) { 1651 case 100: 1652 final MessageViewAttachmentInfo attachmentInfo = 1653 findAttachmentInfoFromView(attachmentId); 1654 if (attachmentInfo != null) { 1655 updatePreviewIcon(attachmentInfo); 1656 } 1657 doFinishLoadAttachment(attachmentId); 1658 break; 1659 default: 1660 // do nothing - we don't have a progress bar at this time 1661 break; 1662 } 1663 } else { 1664 MessageViewAttachmentInfo attachment = findAttachmentInfo(attachmentId); 1665 if (attachment == null) { 1666 // Called before LoadAttachmentsTask finishes. 1667 // (Possible if you quickly close & re-open a message) 1668 return; 1669 } 1670 attachment.cancelButton.setVisibility(View.GONE); 1671 attachment.loadButton.setVisibility(View.VISIBLE); 1672 attachment.hideProgress(); 1673 1674 final String error; 1675 if (result.getCause() instanceof IOException) { 1676 error = mContext.getString(R.string.status_network_error); 1677 } else { 1678 error = mContext.getString( 1679 R.string.message_view_load_attachment_failed_toast, 1680 attachment.mName); 1681 } 1682 mCallback.onLoadMessageError(error); 1683 } 1684 } 1685 } 1686 1687 private void showAttachmentProgress(long attachmentId, int progress) { 1688 MessageViewAttachmentInfo attachment = findAttachmentInfo(attachmentId); 1689 if (attachment != null) { 1690 if (progress == 0) { 1691 attachment.cancelButton.setVisibility(View.GONE); 1692 } 1693 attachment.showProgress(progress); 1694 } 1695 } 1696 } 1697 1698 /** 1699 * Class to detect update on the current message (e.g. toggle star). When it gets content 1700 * change notifications, it kicks {@link ReloadMessageTask}. 1701 * 1702 * TODO Use the new Throttle class. 1703 */ 1704 private class MessageObserver extends ContentObserver implements Runnable { 1705 private final Throttle mThrottle; 1706 private final ContentResolver mContentResolver; 1707 1708 private boolean mRegistered; 1709 1710 public MessageObserver(Handler handler, Context context) { 1711 super(handler); 1712 mContentResolver = context.getContentResolver(); 1713 mThrottle = new Throttle("MessageObserver", this, handler); 1714 } 1715 1716 public void unregister() { 1717 if (!mRegistered) { 1718 return; 1719 } 1720 mThrottle.cancelScheduledCallback(); 1721 mContentResolver.unregisterContentObserver(this); 1722 mRegistered = false; 1723 } 1724 1725 public void register(Uri notifyUri) { 1726 unregister(); 1727 mContentResolver.registerContentObserver(notifyUri, true, this); 1728 mRegistered = true; 1729 } 1730 1731 @Override 1732 public boolean deliverSelfNotifications() { 1733 return true; 1734 } 1735 1736 @Override 1737 public void onChange(boolean selfChange) { 1738 mThrottle.onEvent(); 1739 } 1740 1741 /** 1742 * This method is delay-called by {@link Throttle} on the UI thread. Need to make 1743 * sure if the fragment is still valid. (i.e. don't reload if clearContent() has been 1744 * called.) 1745 */ 1746 @Override 1747 public void run() { 1748 if (!isMessageSpecified()) { 1749 return; 1750 } 1751 Utility.cancelTaskInterrupt(mReloadMessageTask); 1752 mReloadMessageTask = new ReloadMessageTask(); 1753 mReloadMessageTask.execute(); 1754 } 1755 } 1756 1757 private void updatePreviewIcon(MessageViewAttachmentInfo attachmentInfo) { 1758 new UpdatePreviewIconTask(attachmentInfo).execute(); 1759 } 1760 1761 private class UpdatePreviewIconTask extends EmailAsyncTask<Void, Void, Bitmap> { 1762 @SuppressWarnings("hiding") 1763 private final Context mContext; 1764 private final MessageViewAttachmentInfo mAttachmentInfo; 1765 1766 public UpdatePreviewIconTask(MessageViewAttachmentInfo attachmentInfo) { 1767 super(mUpdatePreviewIconTaskTracker); 1768 mContext = getActivity(); 1769 mAttachmentInfo = attachmentInfo; 1770 } 1771 1772 @Override 1773 protected Bitmap doInBackground(Void... params) { 1774 return getPreviewIcon(mContext, mAttachmentInfo); 1775 } 1776 1777 @Override 1778 protected void onPostExecute(Bitmap result) { 1779 if (result == null) { 1780 return; 1781 } 1782 mAttachmentInfo.iconView.setImageBitmap(result); 1783 } 1784 } 1785 1786 public boolean isMessageLoadedForTest() { 1787 return mIsMessageLoadedForTest; 1788 } 1789 1790 public void clearIsMessageLoadedForTest() { 1791 mIsMessageLoadedForTest = true; 1792 } 1793} 1794