MessageViewFragmentBase.java revision ab40c988216b32ed145c0cad45c25e9cf2509c85
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.Preferences; 24import com.android.email.R; 25import com.android.email.Throttle; 26import com.android.email.mail.internet.EmailHtmlUtil; 27import com.android.email.service.AttachmentDownloadService; 28import com.android.emailcommon.Logging; 29import com.android.emailcommon.mail.Address; 30import com.android.emailcommon.mail.MessagingException; 31import com.android.emailcommon.provider.EmailContent.Attachment; 32import com.android.emailcommon.provider.EmailContent.Body; 33import com.android.emailcommon.provider.EmailContent.Message; 34import com.android.emailcommon.provider.Mailbox; 35import com.android.emailcommon.utility.AttachmentUtilities; 36import com.android.emailcommon.utility.EmailAsyncTask; 37import com.android.emailcommon.utility.Utility; 38import com.google.common.collect.Maps; 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.Bundle; 60import android.os.Environment; 61import android.os.Handler; 62import android.provider.ContactsContract; 63import android.provider.ContactsContract.QuickContact; 64import android.text.SpannableStringBuilder; 65import android.text.TextUtils; 66import android.text.format.DateUtils; 67import android.util.Log; 68import android.util.Patterns; 69import android.view.LayoutInflater; 70import android.view.View; 71import android.view.ViewGroup; 72import android.webkit.WebSettings; 73import android.webkit.WebView; 74import android.webkit.WebViewClient; 75import android.widget.Button; 76import android.widget.ImageView; 77import android.widget.LinearLayout; 78import android.widget.ProgressBar; 79import android.widget.TextView; 80 81import java.io.File; 82import java.io.FileOutputStream; 83import java.io.IOException; 84import java.io.InputStream; 85import java.io.OutputStream; 86import java.util.Formatter; 87import java.util.Map; 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 */ 97public abstract class MessageViewFragmentBase extends Fragment implements View.OnClickListener { 98 private static final String BUNDLE_KEY_CURRENT_TAB = "MessageViewFragmentBase.currentTab"; 99 private static final String BUNDLE_KEY_PICTURE_LOADED = "MessageViewFragmentBase.pictureLoaded"; 100 private static final int PHOTO_LOADER_ID = 1; 101 protected Context mContext; 102 103 // Regex that matches start of img tag. '<(?i)img\s+'. 104 private static final Pattern IMG_TAG_START_REGEX = Pattern.compile("<(?i)img\\s+"); 105 // Regex that matches Web URL protocol part as case insensitive. 106 private static final Pattern WEB_URL_PROTOCOL = Pattern.compile("(?i)http|https://"); 107 108 private static int PREVIEW_ICON_WIDTH = 62; 109 private static int PREVIEW_ICON_HEIGHT = 62; 110 111 private TextView mSubjectView; 112 private TextView mFromNameView; 113 private TextView mFromAddressView; 114 private TextView mDateTimeView; 115 private TextView mAddressesView; 116 private WebView mMessageContentView; 117 private LinearLayout mAttachments; 118 private View mTabSection; 119 private ImageView mFromBadge; 120 private ImageView mSenderPresenceView; 121 private View mMainView; 122 private View mLoadingProgress; 123 private Button mShowDetailsButton; 124 125 private TextView mMessageTab; 126 private TextView mAttachmentTab; 127 private TextView mInviteTab; 128 // It is not really a tab, but looks like one of them. 129 private TextView mShowPicturesTab; 130 131 private View mAttachmentsScroll; 132 private View mInviteScroll; 133 134 private long mAccountId = -1; 135 private long mMessageId = -1; 136 private Message mMessage; 137 138 private Controller mController; 139 private ControllerResultUiThreadWrapper<ControllerResults> mControllerCallback; 140 141 // contains the HTML body. Is used by LoadAttachmentTask to display inline images. 142 // is null most of the time, is used transiently to pass info to LoadAttachementTask 143 private String mHtmlTextRaw; 144 145 // contains the HTML content as set in WebView. 146 private String mHtmlTextWebView; 147 148 private boolean mResumed; 149 150 private boolean mIsMessageLoadedForTest; 151 152 private MessageObserver mMessageObserver; 153 154 private static final int CONTACT_STATUS_STATE_UNLOADED = 0; 155 private static final int CONTACT_STATUS_STATE_UNLOADED_TRIGGERED = 1; 156 private static final int CONTACT_STATUS_STATE_LOADED = 2; 157 158 private int mContactStatusState; 159 private Uri mQuickContactLookupUri; 160 161 /** Flag for {@link #mTabFlags}: Message has attachment(s) */ 162 protected static final int TAB_FLAGS_HAS_ATTACHMENT = 1; 163 164 /** 165 * Flag for {@link #mTabFlags}: Message contains invite. This flag is only set by 166 * {@link MessageViewFragment}. 167 */ 168 protected static final int TAB_FLAGS_HAS_INVITE = 2; 169 170 /** Flag for {@link #mTabFlags}: Message contains pictures */ 171 protected static final int TAB_FLAGS_HAS_PICTURES = 4; 172 173 /** Flag for {@link #mTabFlags}: "Show pictures" has already been pressed */ 174 protected static final int TAB_FLAGS_PICTURE_LOADED = 8; 175 176 /** 177 * Flags to control the tabs. 178 * @see #updateTabs(int) 179 */ 180 private int mTabFlags; 181 182 /** # of attachments in the current message */ 183 private int mAttachmentCount; 184 185 // Use (random) large values, to avoid confusion with TAB_FLAGS_* 186 protected static final int TAB_MESSAGE = 101; 187 protected static final int TAB_INVITE = 102; 188 protected static final int TAB_ATTACHMENT = 103; 189 private static final int TAB_NONE = 0; 190 191 /** Current tab */ 192 private int mCurrentTab = TAB_NONE; 193 /** 194 * Tab that was selected in the previous activity instance. 195 * Used to restore the current tab after screen rotation. 196 */ 197 private int mRestoredTab = TAB_NONE; 198 199 private boolean mRestoredPictureLoaded; 200 201 private final EmailAsyncTask.Tracker mTaskTracker = new EmailAsyncTask.Tracker(); 202 203 /** 204 * Zoom scales for webview. Values correspond to {@link Preferences#TEXT_ZOOM_TINY}.. 205 * {@link Preferences#TEXT_ZOOM_HUGE}. 206 */ 207 private static final float[] ZOOM_SCALE_ARRAY = new float[] {0.8f, 0.9f, 1.0f, 1.2f, 1.5f}; 208 209 public interface Callback { 210 /** Called when a message is about to be shown. */ 211 public void onMessageShown(); 212 213 /** 214 * Called when a link in a message is clicked. 215 * 216 * @param url link url that's clicked. 217 * @return true if handled, false otherwise. 218 */ 219 public boolean onUrlInMessageClicked(String url); 220 221 /** 222 * Called when the message specified doesn't exist, or is deleted/moved. 223 */ 224 public void onMessageNotExists(); 225 226 /** Called when it starts loading a message. */ 227 public void onLoadMessageStarted(); 228 229 /** Called when it successfully finishes loading a message. */ 230 public void onLoadMessageFinished(); 231 232 /** Called when an error occurred during loading a message. */ 233 public void onLoadMessageError(String errorMessage); 234 } 235 236 public static class EmptyCallback implements Callback { 237 public static final Callback INSTANCE = new EmptyCallback(); 238 @Override public void onMessageShown() {} 239 @Override public void onLoadMessageError(String errorMessage) {} 240 @Override public void onLoadMessageFinished() {} 241 @Override public void onLoadMessageStarted() {} 242 @Override public void onMessageNotExists() {} 243 @Override 244 public boolean onUrlInMessageClicked(String url) { 245 return false; 246 } 247 } 248 249 private Callback mCallback = EmptyCallback.INSTANCE; 250 251 @Override 252 public void onAttach(Activity activity) { 253 if (Logging.DEBUG_LIFECYCLE && Email.DEBUG) { 254 Log.d(Logging.LOG_TAG, this + " onAttach"); 255 } 256 super.onAttach(activity); 257 } 258 259 @Override 260 public void onCreate(Bundle savedInstanceState) { 261 if (Logging.DEBUG_LIFECYCLE && Email.DEBUG) { 262 Log.d(Logging.LOG_TAG, this + " onCreate"); 263 } 264 super.onCreate(savedInstanceState); 265 266 mContext = getActivity().getApplicationContext(); 267 268 // Initialize components, but don't "start" them. Registering the controller callbacks 269 // and starting MessageObserver, should be done in onActivityCreated or later and be stopped 270 // in onDestroyView to prevent from getting callbacks when the fragment is in the back 271 // stack, but they'll start again when it's back from the back stack. 272 mController = Controller.getInstance(mContext); 273 mControllerCallback = new ControllerResultUiThreadWrapper<ControllerResults>( 274 new Handler(), new ControllerResults()); 275 mMessageObserver = new MessageObserver(new Handler(), mContext); 276 277 if (savedInstanceState != null) { 278 restoreInstanceState(savedInstanceState); 279 } 280 } 281 282 @Override 283 public View onCreateView( 284 LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { 285 if (Logging.DEBUG_LIFECYCLE && Email.DEBUG) { 286 Log.d(Logging.LOG_TAG, this + " onCreateView"); 287 } 288 final View view = inflater.inflate(R.layout.message_view_fragment, container, false); 289 290 mSubjectView = (TextView) UiUtilities.getView(view, R.id.subject); 291 mFromNameView = (TextView) UiUtilities.getView(view, R.id.from_name); 292 mFromAddressView = (TextView) UiUtilities.getView(view, R.id.from_address); 293 mAddressesView = (TextView) UiUtilities.getView(view, R.id.addresses); 294 mDateTimeView = (TextView) UiUtilities.getView(view, R.id.datetime); 295 mMessageContentView = (WebView) UiUtilities.getView(view, R.id.message_content); 296 mAttachments = (LinearLayout) UiUtilities.getView(view, R.id.attachments); 297 mTabSection = UiUtilities.getView(view, R.id.message_tabs_section); 298 mFromBadge = (ImageView) UiUtilities.getView(view, R.id.badge); 299 mSenderPresenceView = (ImageView) UiUtilities.getView(view, R.id.presence); 300 mMainView = UiUtilities.getView(view, R.id.main_panel); 301 mLoadingProgress = UiUtilities.getView(view, R.id.loading_progress); 302 mShowDetailsButton = (Button) UiUtilities.getView(view, R.id.show_details); 303 304 mFromNameView.setOnClickListener(this); 305 mFromAddressView.setOnClickListener(this); 306 mFromBadge.setOnClickListener(this); 307 mSenderPresenceView.setOnClickListener(this); 308 309 mMessageTab = (TextView) UiUtilities.getView(view, R.id.show_message); 310 mAttachmentTab = (TextView) UiUtilities.getView(view, R.id.show_attachments); 311 mShowPicturesTab = (TextView) UiUtilities.getView(view, R.id.show_pictures); 312 // Invite is only used in MessageViewFragment, but visibility is controlled here. 313 mInviteTab = (TextView) UiUtilities.getView(view, R.id.show_invite); 314 315 mMessageTab.setOnClickListener(this); 316 mAttachmentTab.setOnClickListener(this); 317 mShowPicturesTab.setOnClickListener(this); 318 mInviteTab.setOnClickListener(this); 319 mShowDetailsButton.setOnClickListener(this); 320 321 mAttachmentsScroll = UiUtilities.getView(view, R.id.attachments_scroll); 322 mInviteScroll = UiUtilities.getView(view, R.id.invite_scroll); 323 324 WebSettings webSettings = mMessageContentView.getSettings(); 325 boolean supportMultiTouch = mContext.getPackageManager() 326 .hasSystemFeature(PackageManager.FEATURE_TOUCHSCREEN_MULTITOUCH); 327 webSettings.setDisplayZoomControls(!supportMultiTouch); 328 webSettings.setSupportZoom(true); 329 webSettings.setBuiltInZoomControls(true); 330 mMessageContentView.setWebViewClient(new CustomWebViewClient()); 331 return view; 332 } 333 334 @Override 335 public void onActivityCreated(Bundle savedInstanceState) { 336 if (Logging.DEBUG_LIFECYCLE && Email.DEBUG) { 337 Log.d(Logging.LOG_TAG, this + " onActivityCreated"); 338 } 339 super.onActivityCreated(savedInstanceState); 340 mController.addResultCallback(mControllerCallback); 341 342 resetView(); 343 new LoadMessageTask(true).executeParallel(); 344 345 UiUtilities.installFragment(this); 346 } 347 348 @Override 349 public void onStart() { 350 if (Logging.DEBUG_LIFECYCLE && Email.DEBUG) { 351 Log.d(Logging.LOG_TAG, this + " onStart"); 352 } 353 super.onStart(); 354 } 355 356 @Override 357 public void onResume() { 358 if (Logging.DEBUG_LIFECYCLE && Email.DEBUG) { 359 Log.d(Logging.LOG_TAG, this + " onResume"); 360 } 361 super.onResume(); 362 363 mResumed = true; 364 365 // We might have comes back from other full-screen activities. If so, we need to update 366 // the attachment tab as system settings may have been updated that affect which 367 // options are available to the user. 368 updateAttachmentTab(); 369 } 370 371 @Override 372 public void onPause() { 373 if (Logging.DEBUG_LIFECYCLE && Email.DEBUG) { 374 Log.d(Logging.LOG_TAG, this + " onPause"); 375 } 376 mResumed = false; 377 super.onPause(); 378 } 379 380 @Override 381 public void onStop() { 382 if (Logging.DEBUG_LIFECYCLE && Email.DEBUG) { 383 Log.d(Logging.LOG_TAG, this + " onStop"); 384 } 385 super.onStop(); 386 } 387 388 @Override 389 public void onDestroyView() { 390 if (Logging.DEBUG_LIFECYCLE && Email.DEBUG) { 391 Log.d(Logging.LOG_TAG, this + " onDestroyView"); 392 } 393 UiUtilities.uninstallFragment(this); 394 mController.removeResultCallback(mControllerCallback); 395 cancelAllTasks(); 396 mMessageContentView.destroy(); 397 mMessageContentView = null; 398 399 super.onDestroyView(); 400 } 401 402 @Override 403 public void onDestroy() { 404 if (Logging.DEBUG_LIFECYCLE && Email.DEBUG) { 405 Log.d(Logging.LOG_TAG, this + " onDestroy"); 406 } 407 super.onDestroy(); 408 } 409 410 @Override 411 public void onDetach() { 412 if (Logging.DEBUG_LIFECYCLE && Email.DEBUG) { 413 Log.d(Logging.LOG_TAG, this + " onDetach"); 414 } 415 super.onDetach(); 416 } 417 418 @Override 419 public void onSaveInstanceState(Bundle outState) { 420 if (Logging.DEBUG_LIFECYCLE && Email.DEBUG) { 421 Log.d(Logging.LOG_TAG, this + " onSaveInstanceState"); 422 } 423 super.onSaveInstanceState(outState); 424 outState.putInt(BUNDLE_KEY_CURRENT_TAB, mCurrentTab); 425 outState.putBoolean(BUNDLE_KEY_PICTURE_LOADED, (mTabFlags & TAB_FLAGS_PICTURE_LOADED) != 0); 426 } 427 428 private void restoreInstanceState(Bundle state) { 429 if (Logging.DEBUG_LIFECYCLE && Email.DEBUG) { 430 Log.d(Logging.LOG_TAG, this + " restoreInstanceState"); 431 } 432 // At this point (in onCreate) no tabs are visible (because we don't know if the message has 433 // an attachment or invite before loading it). We just remember the tab here. 434 // We'll make it current when the tab first becomes visible in updateTabs(). 435 mRestoredTab = state.getInt(BUNDLE_KEY_CURRENT_TAB); 436 mRestoredPictureLoaded = state.getBoolean(BUNDLE_KEY_PICTURE_LOADED); 437 } 438 439 public void setCallback(Callback callback) { 440 mCallback = (callback == null) ? EmptyCallback.INSTANCE : callback; 441 } 442 443 private void cancelAllTasks() { 444 mMessageObserver.unregister(); 445 mTaskTracker.cancellAllInterrupt(); 446 } 447 448 protected final Controller getController() { 449 return mController; 450 } 451 452 protected final Callback getCallback() { 453 return mCallback; 454 } 455 456 protected final Message getMessage() { 457 return mMessage; 458 } 459 460 protected final boolean isMessageOpen() { 461 return mMessage != null; 462 } 463 464 /** 465 * Returns the account id of the current message, or -1 if unknown (message not open yet, or 466 * viewing an EML message). 467 */ 468 public long getAccountId() { 469 return mAccountId; 470 } 471 472 /** 473 * Show/hide the content. We hide all the content (except for the bottom buttons) when loading, 474 * to avoid flicker. 475 */ 476 private void showContent(boolean showContent, boolean showProgressWhenHidden) { 477 makeVisible(mMainView, showContent); 478 makeVisible(mLoadingProgress, !showContent && showProgressWhenHidden); 479 } 480 481 protected void resetView() { 482 showContent(false, false); 483 updateTabs(0); 484 setCurrentTab(TAB_MESSAGE); 485 if (mMessageContentView != null) { 486 blockNetworkLoads(true); 487 mMessageContentView.scrollTo(0, 0); 488 mMessageContentView.clearView(); 489 490 // Dynamic configuration of WebView 491 final WebSettings settings = mMessageContentView.getSettings(); 492 settings.setLayoutAlgorithm(WebSettings.LayoutAlgorithm.NORMAL); 493 mMessageContentView.setInitialScale(getWebViewZoom()); 494 } 495 mAttachmentsScroll.scrollTo(0, 0); 496 mInviteScroll.scrollTo(0, 0); 497 mAttachments.removeAllViews(); 498 mAttachments.setVisibility(View.GONE); 499 initContactStatusViews(); 500 } 501 502 /** 503 * Returns the zoom scale (in percent) which is a combination of the user setting 504 * (tiny, small, normal, large, huge) and the device density. The intention 505 * is for the text to be physically equal in size over different density 506 * screens. 507 */ 508 private int getWebViewZoom() { 509 float density = mContext.getResources().getDisplayMetrics().density; 510 int zoom = Preferences.getPreferences(mContext).getTextZoom(); 511 return (int) (ZOOM_SCALE_ARRAY[zoom] * density * 100); 512 } 513 514 private void initContactStatusViews() { 515 mContactStatusState = CONTACT_STATUS_STATE_UNLOADED; 516 mQuickContactLookupUri = null; 517 mSenderPresenceView.setImageResource(ContactStatusLoader.PRESENCE_UNKNOWN_RESOURCE_ID); 518 showDefaultQuickContactBadgeImage(); 519 } 520 521 private void showDefaultQuickContactBadgeImage() { 522 mFromBadge.setImageResource(R.drawable.ic_contact_picture); 523 } 524 525 protected final void addTabFlags(int tabFlags) { 526 updateTabs(mTabFlags | tabFlags); 527 } 528 529 private final void clearTabFlags(int tabFlags) { 530 updateTabs(mTabFlags & ~tabFlags); 531 } 532 533 private void setAttachmentCount(int count) { 534 mAttachmentCount = count; 535 if (mAttachmentCount > 0) { 536 addTabFlags(TAB_FLAGS_HAS_ATTACHMENT); 537 } else { 538 clearTabFlags(TAB_FLAGS_HAS_ATTACHMENT); 539 } 540 } 541 542 private static void makeVisible(View v, boolean visible) { 543 final int visibility = visible ? View.VISIBLE : View.GONE; 544 if ((v != null) && (v.getVisibility() != visibility)) { 545 v.setVisibility(visibility); 546 } 547 } 548 549 private static boolean isVisible(View v) { 550 return (v != null) && (v.getVisibility() == View.VISIBLE); 551 } 552 553 /** 554 * Update the visual of the tabs. (visibility, text, etc) 555 */ 556 private void updateTabs(int tabFlags) { 557 mTabFlags = tabFlags; 558 boolean messageTabVisible = (tabFlags & (TAB_FLAGS_HAS_INVITE | TAB_FLAGS_HAS_ATTACHMENT)) 559 != 0; 560 makeVisible(mMessageTab, messageTabVisible); 561 makeVisible(mInviteTab, (tabFlags & TAB_FLAGS_HAS_INVITE) != 0); 562 makeVisible(mAttachmentTab, (tabFlags & TAB_FLAGS_HAS_ATTACHMENT) != 0); 563 564 final boolean hasPictures = (tabFlags & TAB_FLAGS_HAS_PICTURES) != 0; 565 final boolean pictureLoaded = (tabFlags & TAB_FLAGS_PICTURE_LOADED) != 0; 566 makeVisible(mShowPicturesTab, hasPictures && !pictureLoaded); 567 568 mAttachmentTab.setText(mContext.getResources().getQuantityString( 569 R.plurals.message_view_show_attachments_action, 570 mAttachmentCount, mAttachmentCount)); 571 572 // Hide the entire section if no tabs are visible. 573 makeVisible(mTabSection, isVisible(mMessageTab) || isVisible(mInviteTab) 574 || isVisible(mAttachmentTab) || isVisible(mShowPicturesTab)); 575 576 // Restore previously selected tab after rotation 577 if (mRestoredTab != TAB_NONE && isVisible(getTabViewForFlag(mRestoredTab))) { 578 setCurrentTab(mRestoredTab); 579 mRestoredTab = TAB_NONE; 580 } 581 } 582 583 /** 584 * Set the current tab. 585 * 586 * @param tab any of {@link #TAB_MESSAGE}, {@link #TAB_ATTACHMENT} or {@link #TAB_INVITE}. 587 */ 588 private void setCurrentTab(int tab) { 589 mCurrentTab = tab; 590 591 // Hide & unselect all tabs 592 makeVisible(getTabContentViewForFlag(TAB_MESSAGE), false); 593 makeVisible(getTabContentViewForFlag(TAB_ATTACHMENT), false); 594 makeVisible(getTabContentViewForFlag(TAB_INVITE), false); 595 getTabViewForFlag(TAB_MESSAGE).setSelected(false); 596 getTabViewForFlag(TAB_ATTACHMENT).setSelected(false); 597 getTabViewForFlag(TAB_INVITE).setSelected(false); 598 599 makeVisible(getTabContentViewForFlag(mCurrentTab), true); 600 getTabViewForFlag(mCurrentTab).setSelected(true); 601 } 602 603 private View getTabViewForFlag(int tabFlag) { 604 switch (tabFlag) { 605 case TAB_MESSAGE: 606 return mMessageTab; 607 case TAB_ATTACHMENT: 608 return mAttachmentTab; 609 case TAB_INVITE: 610 return mInviteTab; 611 } 612 throw new IllegalArgumentException(); 613 } 614 615 private View getTabContentViewForFlag(int tabFlag) { 616 switch (tabFlag) { 617 case TAB_MESSAGE: 618 return mMessageContentView; 619 case TAB_ATTACHMENT: 620 return mAttachmentsScroll; 621 case TAB_INVITE: 622 return mInviteScroll; 623 } 624 throw new IllegalArgumentException(); 625 } 626 627 private void blockNetworkLoads(boolean block) { 628 if (mMessageContentView != null) { 629 mMessageContentView.getSettings().setBlockNetworkLoads(block); 630 } 631 } 632 633 private void setMessageHtml(String html) { 634 if (html == null) { 635 html = ""; 636 } 637 if (mMessageContentView != null) { 638 mMessageContentView.loadDataWithBaseURL("email://", html, "text/html", "utf-8", null); 639 } 640 } 641 642 /** 643 * Handle clicks on sender, which shows {@link QuickContact} or prompts to add 644 * the sender as a contact. 645 */ 646 private void onClickSender() { 647 if (!isMessageOpen()) return; 648 final Address senderEmail = Address.unpackFirst(mMessage.mFrom); 649 if (senderEmail == null) return; 650 651 if (mContactStatusState == CONTACT_STATUS_STATE_UNLOADED) { 652 // Status not loaded yet. 653 mContactStatusState = CONTACT_STATUS_STATE_UNLOADED_TRIGGERED; 654 return; 655 } 656 if (mContactStatusState == CONTACT_STATUS_STATE_UNLOADED_TRIGGERED) { 657 return; // Already clicked, and waiting for the data. 658 } 659 660 if (mQuickContactLookupUri != null) { 661 QuickContact.showQuickContact(mContext, mFromBadge, mQuickContactLookupUri, 662 QuickContact.MODE_LARGE, null); 663 } else { 664 // No matching contact, ask user to create one 665 final Uri mailUri = Uri.fromParts("mailto", senderEmail.getAddress(), null); 666 final Intent intent = new Intent(ContactsContract.Intents.SHOW_OR_CREATE_CONTACT, 667 mailUri); 668 669 // Pass along full E-mail string for possible create dialog 670 intent.putExtra(ContactsContract.Intents.EXTRA_CREATE_DESCRIPTION, 671 senderEmail.toString()); 672 673 // Only provide personal name hint if we have one 674 final String senderPersonal = senderEmail.getPersonal(); 675 if (!TextUtils.isEmpty(senderPersonal)) { 676 intent.putExtra(ContactsContract.Intents.Insert.NAME, senderPersonal); 677 } 678 intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET); 679 680 startActivity(intent); 681 } 682 } 683 684 private static class ContactStatusLoaderCallbacks 685 implements LoaderCallbacks<ContactStatusLoader.Result> { 686 private static final String BUNDLE_EMAIL_ADDRESS = "email"; 687 private final MessageViewFragmentBase mFragment; 688 689 public ContactStatusLoaderCallbacks(MessageViewFragmentBase fragment) { 690 mFragment = fragment; 691 } 692 693 public static Bundle createArguments(String emailAddress) { 694 Bundle b = new Bundle(); 695 b.putString(BUNDLE_EMAIL_ADDRESS, emailAddress); 696 return b; 697 } 698 699 @Override 700 public Loader<ContactStatusLoader.Result> onCreateLoader(int id, Bundle args) { 701 return new ContactStatusLoader(mFragment.mContext, 702 args.getString(BUNDLE_EMAIL_ADDRESS)); 703 } 704 705 @Override 706 public void onLoadFinished(Loader<ContactStatusLoader.Result> loader, 707 ContactStatusLoader.Result result) { 708 boolean triggered = 709 (mFragment.mContactStatusState == CONTACT_STATUS_STATE_UNLOADED_TRIGGERED); 710 mFragment.mContactStatusState = CONTACT_STATUS_STATE_LOADED; 711 mFragment.mQuickContactLookupUri = result.mLookupUri; 712 mFragment.mSenderPresenceView.setImageResource(result.mPresenceResId); 713 if (result.mPhoto != null) { // photo will be null if unknown. 714 mFragment.mFromBadge.setImageBitmap(result.mPhoto); 715 } 716 if (triggered) { 717 mFragment.onClickSender(); 718 } 719 } 720 721 @Override 722 public void onLoaderReset(Loader<ContactStatusLoader.Result> loader) { 723 } 724 } 725 726 private void onSaveAttachment(MessageViewAttachmentInfo info) { 727 if (!Utility.isExternalStorageMounted()) { 728 /* 729 * Abort early if there's no place to save the attachment. We don't want to spend 730 * the time downloading it and then abort. 731 */ 732 Utility.showToast(getActivity(), R.string.message_view_status_attachment_not_saved); 733 return; 734 } 735 736 if (info.isFileSaved()) { 737 // Nothing to do - we have the file saved. 738 return; 739 } 740 741 File savedFile = performAttachmentSave(info); 742 if (savedFile != null) { 743 Utility.showToast(getActivity(), String.format( 744 mContext.getString(R.string.message_view_status_attachment_saved), 745 savedFile.getName())); 746 } else { 747 Utility.showToast(getActivity(), R.string.message_view_status_attachment_not_saved); 748 } 749 } 750 751 private File performAttachmentSave(MessageViewAttachmentInfo info) { 752 Attachment attachment = Attachment.restoreAttachmentWithId(mContext, info.mId); 753 Uri attachmentUri = AttachmentUtilities.getAttachmentUri(mAccountId, attachment.mId); 754 755 try { 756 File downloads = Environment.getExternalStoragePublicDirectory( 757 Environment.DIRECTORY_DOWNLOADS); 758 downloads.mkdirs(); 759 File file = Utility.createUniqueFile(downloads, attachment.mFileName); 760 Uri contentUri = AttachmentUtilities.resolveAttachmentIdToContentUri( 761 mContext.getContentResolver(), attachmentUri); 762 InputStream in = mContext.getContentResolver().openInputStream(contentUri); 763 OutputStream out = new FileOutputStream(file); 764 IOUtils.copy(in, out); 765 out.flush(); 766 out.close(); 767 in.close(); 768 769 String absolutePath = file.getAbsolutePath(); 770 771 // Although the download manager can scan media files, scanning only happens after the 772 // user clicks on the item in the Downloads app. So, we run the attachment through 773 // the media scanner ourselves so it gets added to gallery / music immediately. 774 MediaScannerConnection.scanFile(mContext, new String[] {absolutePath}, 775 null, null); 776 777 DownloadManager dm = 778 (DownloadManager) getActivity().getSystemService(Context.DOWNLOAD_SERVICE); 779 dm.addCompletedDownload(info.mName, info.mName, 780 false /* do not use media scanner */, 781 info.mContentType, absolutePath, info.mSize, 782 true /* show notification */); 783 784 // Cache the stored file information. 785 info.setSavedPath(absolutePath); 786 787 // Update our buttons. 788 updateAttachmentButtons(info); 789 790 return file; 791 792 } catch (IOException ioe) { 793 // Ignore. Callers will handle it from the return code. 794 } 795 796 return null; 797 } 798 799 private void onOpenAttachment(MessageViewAttachmentInfo info) { 800 if (info.mAllowInstall) { 801 // The package installer is unable to install files from a content URI; it must be 802 // given a file path. Therefore, we need to save it first in order to proceed 803 if (!info.mAllowSave || !Utility.isExternalStorageMounted()) { 804 Utility.showToast(getActivity(), R.string.message_view_status_attachment_not_saved); 805 return; 806 } 807 808 if (!info.isFileSaved()) { 809 if (performAttachmentSave(info) == null) { 810 // Saving failed for some reason - bail. 811 Utility.showToast( 812 getActivity(), R.string.message_view_status_attachment_not_saved); 813 return; 814 } 815 } 816 } 817 try { 818 Intent intent = info.getAttachmentIntent(mContext, mAccountId); 819 startActivity(intent); 820 } catch (ActivityNotFoundException e) { 821 Utility.showToast(getActivity(), R.string.message_view_display_attachment_toast); 822 } 823 } 824 825 private void onInfoAttachment(final MessageViewAttachmentInfo attachment) { 826 AttachmentInfoDialog dialog = 827 AttachmentInfoDialog.newInstance(getActivity(), attachment.mDenyFlags); 828 dialog.show(getActivity().getFragmentManager(), null); 829 } 830 831 private void onLoadAttachment(final MessageViewAttachmentInfo attachment) { 832 attachment.loadButton.setVisibility(View.GONE); 833 // If there's nothing in the download queue, we'll probably start right away so wait a 834 // second before showing the cancel button 835 if (AttachmentDownloadService.getQueueSize() == 0) { 836 // Set to invisible; if the button is still in this state one second from now, we'll 837 // assume the download won't start right away, and we make the cancel button visible 838 attachment.cancelButton.setVisibility(View.GONE); 839 // Create the timed task that will change the button state 840 new EmailAsyncTask<Void, Void, Void>(mTaskTracker) { 841 @Override 842 protected Void doInBackground(Void... params) { 843 try { 844 Thread.sleep(1000L); 845 } catch (InterruptedException e) { } 846 return null; 847 } 848 @Override 849 protected void onPostExecute(Void result) { 850 // If the timeout completes and the attachment has not loaded, show cancel 851 if (!attachment.loaded) { 852 attachment.cancelButton.setVisibility(View.VISIBLE); 853 } 854 } 855 }.executeParallel(); 856 } else { 857 attachment.cancelButton.setVisibility(View.VISIBLE); 858 } 859 attachment.showProgressIndeterminate(); 860 mController.loadAttachment(attachment.mId, mMessageId, mAccountId); 861 } 862 863 private void onCancelAttachment(MessageViewAttachmentInfo attachment) { 864 // Don't change button states if we couldn't cancel the download 865 if (AttachmentDownloadService.cancelQueuedAttachment(attachment.mId)) { 866 attachment.loadButton.setVisibility(View.VISIBLE); 867 attachment.cancelButton.setVisibility(View.GONE); 868 attachment.hideProgress(); 869 } 870 } 871 872 /** 873 * Called by ControllerResults. Show the "View" and "Save" buttons; hide "Load" and "Stop" 874 * 875 * @param attachmentId the attachment that was just downloaded 876 */ 877 private void doFinishLoadAttachment(long attachmentId) { 878 MessageViewAttachmentInfo info = findAttachmentInfo(attachmentId); 879 if (info != null) { 880 info.loaded = true; 881 updateAttachmentButtons(info); 882 } 883 } 884 885 private void onShowPicturesInHtml() { 886 if (mMessageContentView != null) { 887 blockNetworkLoads(false); 888 setMessageHtml(mHtmlTextWebView); 889 addTabFlags(TAB_FLAGS_PICTURE_LOADED); 890 } 891 } 892 893 private void onShowDetails() { 894 if (!isMessageOpen()) return; 895 String subject = mMessage.mSubject; 896 String date = formatDate(mMessage.mTimeStamp, true); 897 898 final String SEPARATOR = "\n"; 899 String from = Address.toString(Address.unpack(mMessage.mFrom), SEPARATOR); 900 String to = Address.toString(Address.unpack(mMessage.mTo), SEPARATOR); 901 String cc = Address.toString(Address.unpack(mMessage.mCc), SEPARATOR); 902 String bcc = Address.toString(Address.unpack(mMessage.mBcc), SEPARATOR); 903 MessageViewMessageDetailsDialog dialog = MessageViewMessageDetailsDialog.newInstance( 904 getActivity(), subject, date, from, to, cc, bcc); 905 dialog.show(getActivity().getFragmentManager(), null); 906 } 907 908 @Override 909 public void onClick(View view) { 910 if (!isMessageOpen()) { 911 return; // Ignore. 912 } 913 switch (view.getId()) { 914 case R.id.from_name: 915 case R.id.from_address: 916 case R.id.badge: 917 case R.id.presence: 918 onClickSender(); 919 break; 920 case R.id.load: 921 onLoadAttachment((MessageViewAttachmentInfo) view.getTag()); 922 break; 923 case R.id.info: 924 onInfoAttachment((MessageViewAttachmentInfo) view.getTag()); 925 break; 926 case R.id.save: 927 onSaveAttachment((MessageViewAttachmentInfo) view.getTag()); 928 break; 929 case R.id.open: 930 onOpenAttachment((MessageViewAttachmentInfo) view.getTag()); 931 break; 932 case R.id.cancel: 933 onCancelAttachment((MessageViewAttachmentInfo) view.getTag()); 934 break; 935 case R.id.show_message: 936 setCurrentTab(TAB_MESSAGE); 937 break; 938 case R.id.show_invite: 939 setCurrentTab(TAB_INVITE); 940 break; 941 case R.id.show_attachments: 942 setCurrentTab(TAB_ATTACHMENT); 943 break; 944 case R.id.show_pictures: 945 onShowPicturesInHtml(); 946 break; 947 case R.id.show_details: 948 onShowDetails(); 949 break; 950 } 951 } 952 953 /** 954 * Start loading contact photo and presence. 955 */ 956 private void queryContactStatus() { 957 if (!isMessageOpen()) return; 958 initContactStatusViews(); // Initialize the state, just in case. 959 960 // Find the sender email address, and start presence check. 961 Address sender = Address.unpackFirst(mMessage.mFrom); 962 if (sender != null) { 963 String email = sender.getAddress(); 964 if (email != null) { 965 getLoaderManager().restartLoader(PHOTO_LOADER_ID, 966 ContactStatusLoaderCallbacks.createArguments(email), 967 new ContactStatusLoaderCallbacks(this)); 968 } 969 } 970 } 971 972 /** 973 * Called by {@link LoadMessageTask} and {@link ReloadMessageTask} to load a message in a 974 * subclass specific way. 975 * 976 * NOTE This method is called on a worker thread! Implementations must properly synchronize 977 * when accessing members. 978 * 979 * @param activity the parent activity. Subclass use it as a context, and to show a toast. 980 */ 981 protected abstract Message openMessageSync(Activity activity); 982 983 /** 984 * Async task for loading a single message outside of the UI thread 985 */ 986 private class LoadMessageTask extends EmailAsyncTask<Void, Void, Message> { 987 988 private final boolean mOkToFetch; 989 private int mMailboxType; 990 991 /** 992 * Special constructor to cache some local info 993 */ 994 public LoadMessageTask(boolean okToFetch) { 995 super(mTaskTracker); 996 mOkToFetch = okToFetch; 997 } 998 999 @Override 1000 protected Message doInBackground(Void... params) { 1001 Activity activity = getActivity(); 1002 Message message = null; 1003 if (activity != null) { 1004 message = openMessageSync(activity); 1005 } 1006 if (message != null) { 1007 mMailboxType = Mailbox.getMailboxType(mContext, message.mMailboxKey); 1008 if (mMailboxType == -1) { 1009 message = null; // mailbox removed?? 1010 } 1011 } 1012 return message; 1013 } 1014 1015 @Override 1016 protected void onPostExecute(Message message) { 1017 if (isCancelled()) { 1018 return; 1019 } 1020 if (message == null) { 1021 resetView(); 1022 mCallback.onMessageNotExists(); 1023 return; 1024 } 1025 mMessageId = message.mId; 1026 1027 reloadUiFromMessage(message, mOkToFetch); 1028 queryContactStatus(); 1029 onMessageShown(mMessageId, mMailboxType); 1030 RecentMailboxManager.getInstance(mContext).touch(message.mMailboxKey); 1031 } 1032 } 1033 1034 /** 1035 * Kicked by {@link MessageObserver}. Reload the message and update the views. 1036 */ 1037 private class ReloadMessageTask extends EmailAsyncTask<Void, Void, Message> { 1038 public ReloadMessageTask() { 1039 super(mTaskTracker); 1040 } 1041 1042 @Override 1043 protected Message doInBackground(Void... params) { 1044 Activity activity = getActivity(); 1045 if (activity == null) { 1046 return null; 1047 } else { 1048 return openMessageSync(activity); 1049 } 1050 } 1051 1052 @Override 1053 protected void onPostExecute(Message message) { 1054 if (message == null || message.mMailboxKey != mMessage.mMailboxKey) { 1055 // Message deleted or moved. 1056 mCallback.onMessageNotExists(); 1057 return; 1058 } 1059 mMessage = message; 1060 updateHeaderView(mMessage); 1061 } 1062 } 1063 1064 /** 1065 * Called when a message is shown to the user. 1066 */ 1067 protected void onMessageShown(long messageId, int mailboxType) { 1068 mCallback.onMessageShown(); 1069 } 1070 1071 /** 1072 * Called when the message body is loaded. 1073 */ 1074 protected void onPostLoadBody() { 1075 } 1076 1077 /** 1078 * Async task for loading a single message body outside of the UI thread 1079 */ 1080 private class LoadBodyTask extends EmailAsyncTask<Void, Void, String[]> { 1081 1082 private final long mId; 1083 private boolean mErrorLoadingMessageBody; 1084 1085 /** 1086 * Special constructor to cache some local info 1087 */ 1088 public LoadBodyTask(long messageId) { 1089 super(mTaskTracker); 1090 mId = messageId; 1091 } 1092 1093 @Override 1094 protected String[] doInBackground(Void... params) { 1095 try { 1096 String text = null; 1097 String html = Body.restoreBodyHtmlWithMessageId(mContext, mId); 1098 if (html == null) { 1099 text = Body.restoreBodyTextWithMessageId(mContext, mId); 1100 } 1101 return new String[] { text, html }; 1102 } catch (RuntimeException re) { 1103 // This catches SQLiteException as well as other RTE's we've seen from the 1104 // database calls, such as IllegalStateException 1105 Log.d(Logging.LOG_TAG, "Exception while loading message body", re); 1106 mErrorLoadingMessageBody = true; 1107 return null; 1108 } 1109 } 1110 1111 @Override 1112 protected void onPostExecute(String[] results) { 1113 if (results == null || isCancelled()) { 1114 if (mErrorLoadingMessageBody) { 1115 Utility.showToast(getActivity(), R.string.error_loading_message_body); 1116 } 1117 resetView(); 1118 return; 1119 } 1120 reloadUiFromBody(results[0], results[1]); // text, html 1121 onPostLoadBody(); 1122 } 1123 } 1124 1125 /** 1126 * Async task for loading attachments 1127 * 1128 * Note: This really should only be called when the message load is complete - or, we should 1129 * leave open a listener so the attachments can fill in as they are discovered. In either case, 1130 * this implementation is incomplete, as it will fail to refresh properly if the message is 1131 * partially loaded at this time. 1132 */ 1133 private class LoadAttachmentsTask extends EmailAsyncTask<Long, Void, Attachment[]> { 1134 public LoadAttachmentsTask() { 1135 super(mTaskTracker); 1136 } 1137 1138 @Override 1139 protected Attachment[] doInBackground(Long... messageIds) { 1140 return Attachment.restoreAttachmentsWithMessageId(mContext, messageIds[0]); 1141 } 1142 1143 @Override 1144 protected void onPostExecute(Attachment[] attachments) { 1145 try { 1146 if (isCancelled() || attachments == null) { 1147 return; 1148 } 1149 boolean htmlChanged = false; 1150 int numDisplayedAttachments = 0; 1151 for (Attachment attachment : attachments) { 1152 if (mHtmlTextRaw != null && attachment.mContentId != null 1153 && attachment.mContentUri != null) { 1154 // for html body, replace CID for inline images 1155 // Regexp which matches ' src="cid:contentId"'. 1156 String contentIdRe = 1157 "\\s+(?i)src=\"cid(?-i):\\Q" + attachment.mContentId + "\\E\""; 1158 String srcContentUri = " src=\"" + attachment.mContentUri + "\""; 1159 mHtmlTextRaw = mHtmlTextRaw.replaceAll(contentIdRe, srcContentUri); 1160 htmlChanged = true; 1161 } else { 1162 addAttachment(attachment); 1163 numDisplayedAttachments++; 1164 } 1165 } 1166 setAttachmentCount(numDisplayedAttachments); 1167 mHtmlTextWebView = mHtmlTextRaw; 1168 mHtmlTextRaw = null; 1169 if (htmlChanged) { 1170 setMessageHtml(mHtmlTextWebView); 1171 } 1172 } finally { 1173 showContent(true, false); 1174 } 1175 } 1176 } 1177 1178 private static Bitmap getPreviewIcon(Context context, AttachmentInfo attachment) { 1179 try { 1180 return BitmapFactory.decodeStream( 1181 context.getContentResolver().openInputStream( 1182 AttachmentUtilities.getAttachmentThumbnailUri( 1183 attachment.mAccountKey, attachment.mId, 1184 PREVIEW_ICON_WIDTH, 1185 PREVIEW_ICON_HEIGHT))); 1186 } catch (Exception e) { 1187 Log.d(Logging.LOG_TAG, "Attachment preview failed with exception " + e.getMessage()); 1188 return null; 1189 } 1190 } 1191 1192 /** 1193 * Subclass of AttachmentInfo which includes our views and buttons related to attachment 1194 * handling, as well as our determination of suitability for viewing (based on availability of 1195 * a viewer app) and saving (based upon the presence of external storage) 1196 */ 1197 private static class MessageViewAttachmentInfo extends AttachmentInfo { 1198 private Button openButton; 1199 private Button saveButton; 1200 private Button loadButton; 1201 private Button infoButton; 1202 private Button cancelButton; 1203 private ImageView iconView; 1204 1205 private static final Map<AttachmentInfo, String> sSavedFileInfos = Maps.newHashMap(); 1206 1207 // Don't touch it directly from the outer class. 1208 private final ProgressBar mProgressView; 1209 private boolean loaded; 1210 1211 private MessageViewAttachmentInfo(Context context, Attachment attachment, 1212 ProgressBar progressView) { 1213 super(context, attachment); 1214 mProgressView = progressView; 1215 } 1216 1217 /** 1218 * Create a new attachment info based upon an existing attachment info. Display 1219 * related fields (such as views and buttons) are copied from old to new. 1220 */ 1221 private MessageViewAttachmentInfo(Context context, MessageViewAttachmentInfo oldInfo) { 1222 super(context, oldInfo); 1223 openButton = oldInfo.openButton; 1224 saveButton = oldInfo.saveButton; 1225 loadButton = oldInfo.loadButton; 1226 infoButton = oldInfo.infoButton; 1227 cancelButton = oldInfo.cancelButton; 1228 iconView = oldInfo.iconView; 1229 mProgressView = oldInfo.mProgressView; 1230 loaded = oldInfo.loaded; 1231 } 1232 1233 public void hideProgress() { 1234 // Don't use GONE, which'll break the layout. 1235 if (mProgressView.getVisibility() != View.INVISIBLE) { 1236 mProgressView.setVisibility(View.INVISIBLE); 1237 } 1238 } 1239 1240 public void showProgress(int progress) { 1241 if (mProgressView.getVisibility() != View.VISIBLE) { 1242 mProgressView.setVisibility(View.VISIBLE); 1243 } 1244 if (mProgressView.isIndeterminate()) { 1245 mProgressView.setIndeterminate(false); 1246 } 1247 mProgressView.setProgress(progress); 1248 } 1249 1250 public void showProgressIndeterminate() { 1251 if (mProgressView.getVisibility() != View.VISIBLE) { 1252 mProgressView.setVisibility(View.VISIBLE); 1253 } 1254 if (!mProgressView.isIndeterminate()) { 1255 mProgressView.setIndeterminate(true); 1256 } 1257 } 1258 1259 /** 1260 * Determines whether or not this attachment has a saved file in the external storage. That 1261 * is, the user has at some point clicked "save" for this attachment. 1262 * 1263 * Note: this is an approximation and uses an in-memory cache that can get wiped when the 1264 * process dies, and so is somewhat conservative. Additionally, the user can modify the file 1265 * after saving, and so the file may not be the same (though this is unlikely). 1266 */ 1267 public boolean isFileSaved() { 1268 String path = getSavedPath(); 1269 if (path == null) { 1270 return false; 1271 } 1272 boolean savedFileExists = new File(path).exists(); 1273 if (!savedFileExists) { 1274 // Purge the cache entry. 1275 setSavedPath(null); 1276 } 1277 return savedFileExists; 1278 } 1279 1280 private void setSavedPath(String path) { 1281 if (path == null) { 1282 sSavedFileInfos.remove(this); 1283 } else { 1284 sSavedFileInfos.put(this, path); 1285 } 1286 } 1287 1288 /** 1289 * Returns an absolute file path for the given attachment if it has been saved. If one is 1290 * not found, {@code null} is returned. 1291 * 1292 * Clients are expected to validate that the file at the given path is still valid. 1293 */ 1294 private String getSavedPath() { 1295 return sSavedFileInfos.get(this); 1296 } 1297 1298 @Override 1299 protected Uri getUriForIntent(Context context, long accountId) { 1300 // Prefer to act on the saved file for intents. 1301 String path = getSavedPath(); 1302 return (path != null) 1303 ? Uri.parse("file://" + getSavedPath()) 1304 : super.getUriForIntent(context, accountId); 1305 } 1306 } 1307 1308 /** 1309 * Updates all current attachments on the attachment tab. 1310 */ 1311 private void updateAttachmentTab() { 1312 for (int i = 0, count = mAttachments.getChildCount(); i < count; i++) { 1313 View view = mAttachments.getChildAt(i); 1314 MessageViewAttachmentInfo oldInfo = (MessageViewAttachmentInfo)view.getTag(); 1315 MessageViewAttachmentInfo newInfo = 1316 new MessageViewAttachmentInfo(getActivity(), oldInfo); 1317 updateAttachmentButtons(newInfo); 1318 view.setTag(newInfo); 1319 } 1320 } 1321 1322 /** 1323 * Updates the attachment buttons. Adjusts the visibility of the buttons as well 1324 * as updating any tag information associated with the buttons. 1325 */ 1326 private void updateAttachmentButtons(MessageViewAttachmentInfo attachmentInfo) { 1327 ImageView attachmentIcon = attachmentInfo.iconView; 1328 Button openButton = attachmentInfo.openButton; 1329 Button saveButton = attachmentInfo.saveButton; 1330 Button loadButton = attachmentInfo.loadButton; 1331 Button infoButton = attachmentInfo.infoButton; 1332 Button cancelButton = attachmentInfo.cancelButton; 1333 1334 if (!attachmentInfo.mAllowView) { 1335 openButton.setVisibility(View.GONE); 1336 } 1337 if (!attachmentInfo.mAllowSave) { 1338 saveButton.setVisibility(View.GONE); 1339 } 1340 1341 if (!attachmentInfo.mAllowView && !attachmentInfo.mAllowSave) { 1342 // This attachment may never be viewed or saved, so block everything 1343 attachmentInfo.hideProgress(); 1344 openButton.setVisibility(View.GONE); 1345 saveButton.setVisibility(View.GONE); 1346 loadButton.setVisibility(View.GONE); 1347 cancelButton.setVisibility(View.GONE); 1348 infoButton.setVisibility(View.VISIBLE); 1349 } else if (attachmentInfo.loaded) { 1350 // If the attachment is loaded, show 100% progress 1351 // Note that for POP3 messages, the user will only see "Open" and "Save", 1352 // because the entire message is loaded before being shown. 1353 // Hide "Load" and "Info", show "View" and "Save" 1354 attachmentInfo.showProgress(100); 1355 if (attachmentInfo.mAllowSave) { 1356 saveButton.setVisibility(View.VISIBLE); 1357 1358 boolean isFileSaved = attachmentInfo.isFileSaved(); 1359 saveButton.setEnabled(!isFileSaved); 1360 if (!isFileSaved) { 1361 saveButton.setText(R.string.message_view_attachment_save_action); 1362 } else { 1363 saveButton.setText(R.string.message_view_attachment_saved); 1364 } 1365 } 1366 if (attachmentInfo.mAllowView) { 1367 // Set the attachment action button text accordingly 1368 if (attachmentInfo.mContentType.startsWith("audio/") || 1369 attachmentInfo.mContentType.startsWith("video/")) { 1370 openButton.setText(R.string.message_view_attachment_play_action); 1371 } else if (attachmentInfo.mAllowInstall) { 1372 openButton.setText(R.string.message_view_attachment_install_action); 1373 } else { 1374 openButton.setText(R.string.message_view_attachment_view_action); 1375 } 1376 openButton.setVisibility(View.VISIBLE); 1377 } 1378 if (attachmentInfo.mDenyFlags == AttachmentInfo.ALLOW) { 1379 infoButton.setVisibility(View.GONE); 1380 } else { 1381 infoButton.setVisibility(View.VISIBLE); 1382 } 1383 loadButton.setVisibility(View.GONE); 1384 cancelButton.setVisibility(View.GONE); 1385 1386 updatePreviewIcon(attachmentInfo); 1387 } else { 1388 // The attachment is not loaded, so present UI to start downloading it 1389 1390 // Show "Load"; hide "View", "Save" and "Info" 1391 saveButton.setVisibility(View.GONE); 1392 openButton.setVisibility(View.GONE); 1393 infoButton.setVisibility(View.GONE); 1394 1395 // If the attachment is queued, show the indeterminate progress bar. From this point,. 1396 // any progress changes will cause this to be replaced by the normal progress bar 1397 if (AttachmentDownloadService.isAttachmentQueued(attachmentInfo.mId)) { 1398 attachmentInfo.showProgressIndeterminate(); 1399 loadButton.setVisibility(View.GONE); 1400 cancelButton.setVisibility(View.VISIBLE); 1401 } else { 1402 loadButton.setVisibility(View.VISIBLE); 1403 cancelButton.setVisibility(View.GONE); 1404 } 1405 } 1406 openButton.setTag(attachmentInfo); 1407 saveButton.setTag(attachmentInfo); 1408 loadButton.setTag(attachmentInfo); 1409 infoButton.setTag(attachmentInfo); 1410 cancelButton.setTag(attachmentInfo); 1411 } 1412 1413 /** 1414 * Copy data from a cursor-refreshed attachment into the UI. Called from UI thread. 1415 * 1416 * @param attachment A single attachment loaded from the provider 1417 */ 1418 private void addAttachment(Attachment attachment) { 1419 LayoutInflater inflater = getActivity().getLayoutInflater(); 1420 View view = inflater.inflate(R.layout.message_view_attachment, null); 1421 1422 TextView attachmentName = (TextView) UiUtilities.getView(view, R.id.attachment_name); 1423 TextView attachmentInfoView = (TextView) UiUtilities.getView(view, R.id.attachment_info); 1424 ImageView attachmentIcon = (ImageView) UiUtilities.getView(view, R.id.attachment_icon); 1425 Button openButton = (Button) UiUtilities.getView(view, R.id.open); 1426 Button saveButton = (Button) UiUtilities.getView(view, R.id.save); 1427 Button loadButton = (Button) UiUtilities.getView(view, R.id.load); 1428 Button infoButton = (Button) UiUtilities.getView(view, R.id.info); 1429 Button cancelButton = (Button) UiUtilities.getView(view, R.id.cancel); 1430 ProgressBar attachmentProgress = (ProgressBar) UiUtilities.getView(view, R.id.progress); 1431 1432 MessageViewAttachmentInfo attachmentInfo = new MessageViewAttachmentInfo( 1433 mContext, attachment, attachmentProgress); 1434 1435 // Check whether the attachment already exists 1436 if (Utility.attachmentExists(mContext, attachment)) { 1437 attachmentInfo.loaded = true; 1438 } 1439 1440 attachmentInfo.openButton = openButton; 1441 attachmentInfo.saveButton = saveButton; 1442 attachmentInfo.loadButton = loadButton; 1443 attachmentInfo.infoButton = infoButton; 1444 attachmentInfo.cancelButton = cancelButton; 1445 attachmentInfo.iconView = attachmentIcon; 1446 1447 updateAttachmentButtons(attachmentInfo); 1448 1449 view.setTag(attachmentInfo); 1450 openButton.setOnClickListener(this); 1451 saveButton.setOnClickListener(this); 1452 loadButton.setOnClickListener(this); 1453 infoButton.setOnClickListener(this); 1454 cancelButton.setOnClickListener(this); 1455 1456 attachmentName.setText(attachmentInfo.mName); 1457 attachmentInfoView.setText(UiUtilities.formatSize(mContext, attachmentInfo.mSize)); 1458 1459 mAttachments.addView(view); 1460 mAttachments.setVisibility(View.VISIBLE); 1461 } 1462 1463 private MessageViewAttachmentInfo findAttachmentInfoFromView(long attachmentId) { 1464 for (int i = 0, count = mAttachments.getChildCount(); i < count; i++) { 1465 MessageViewAttachmentInfo attachmentInfo = 1466 (MessageViewAttachmentInfo) mAttachments.getChildAt(i).getTag(); 1467 if (attachmentInfo.mId == attachmentId) { 1468 return attachmentInfo; 1469 } 1470 } 1471 return null; 1472 } 1473 1474 /** 1475 * Reload the UI from a provider cursor. {@link LoadMessageTask#onPostExecute} calls it. 1476 * 1477 * Update the header views, and start loading the body. 1478 * 1479 * @param message A copy of the message loaded from the database 1480 * @param okToFetch If true, and message is not fully loaded, it's OK to fetch from 1481 * the network. Use false to prevent looping here. 1482 */ 1483 protected void reloadUiFromMessage(Message message, boolean okToFetch) { 1484 mMessage = message; 1485 mAccountId = message.mAccountKey; 1486 1487 mMessageObserver.register(ContentUris.withAppendedId(Message.CONTENT_URI, mMessage.mId)); 1488 1489 updateHeaderView(mMessage); 1490 1491 // Handle partially-loaded email, as follows: 1492 // 1. Check value of message.mFlagLoaded 1493 // 2. If != LOADED, ask controller to load it 1494 // 3. Controller callback (after loaded) should trigger LoadBodyTask & LoadAttachmentsTask 1495 // 4. Else start the loader tasks right away (message already loaded) 1496 if (okToFetch && message.mFlagLoaded != Message.FLAG_LOADED_COMPLETE) { 1497 mControllerCallback.getWrappee().setWaitForLoadMessageId(message.mId); 1498 mController.loadMessageForView(message.mId); 1499 } else { 1500 mControllerCallback.getWrappee().setWaitForLoadMessageId(-1); 1501 // Ask for body 1502 new LoadBodyTask(message.mId).executeParallel(); 1503 } 1504 } 1505 1506 protected void updateHeaderView(Message message) { 1507 mSubjectView.setText(message.mSubject); 1508 final Address from = Address.unpackFirst(message.mFrom); 1509 1510 // Set sender address/display name 1511 // Note we set " " for empty field, so TextView's won't get squashed. 1512 // Otherwise their height will be 0, which breaks the layout. 1513 if (from != null) { 1514 final String fromFriendly = from.toFriendly(); 1515 final String fromAddress = from.getAddress(); 1516 mFromNameView.setText(fromFriendly); 1517 mFromAddressView.setText(fromFriendly.equals(fromAddress) ? " " : fromAddress); 1518 } else { 1519 mFromNameView.setText(" "); 1520 mFromAddressView.setText(" "); 1521 } 1522 mDateTimeView.setText(formatDate(message.mTimeStamp, false)); 1523 1524 // To/Cc/Bcc 1525 final Resources res = mContext.getResources(); 1526 final SpannableStringBuilder ssb = new SpannableStringBuilder(); 1527 final String friendlyTo = Address.toFriendly(Address.unpack(message.mTo)); 1528 final String friendlyCc = Address.toFriendly(Address.unpack(message.mCc)); 1529 final String friendlyBcc = Address.toFriendly(Address.unpack(message.mBcc)); 1530 1531 if (!TextUtils.isEmpty(friendlyTo)) { 1532 Utility.appendBold(ssb, res.getString(R.string.message_view_to_label)); 1533 ssb.append(" "); 1534 ssb.append(friendlyTo); 1535 } 1536 if (!TextUtils.isEmpty(friendlyCc)) { 1537 ssb.append(" "); 1538 Utility.appendBold(ssb, res.getString(R.string.message_view_cc_label)); 1539 ssb.append(" "); 1540 ssb.append(friendlyCc); 1541 } 1542 if (!TextUtils.isEmpty(friendlyBcc)) { 1543 ssb.append(" "); 1544 Utility.appendBold(ssb, res.getString(R.string.message_view_bcc_label)); 1545 ssb.append(" "); 1546 ssb.append(friendlyBcc); 1547 } 1548 mAddressesView.setText(ssb); 1549 } 1550 1551 private String formatDate(long millis, boolean withYear) { 1552 StringBuilder sb = new StringBuilder(); 1553 Formatter formatter = new Formatter(sb); 1554 DateUtils.formatDateRange(mContext, formatter, millis, millis, 1555 DateUtils.FORMAT_SHOW_DATE 1556 | DateUtils.FORMAT_ABBREV_ALL 1557 | DateUtils.FORMAT_SHOW_TIME 1558 | (withYear ? DateUtils.FORMAT_SHOW_YEAR : DateUtils.FORMAT_NO_YEAR)); 1559 return sb.toString(); 1560 } 1561 1562 /** 1563 * Reload the body from the provider cursor. This must only be called from the UI thread. 1564 * 1565 * @param bodyText text part 1566 * @param bodyHtml html part 1567 * 1568 * TODO deal with html vs text and many other issues <- WHAT DOES IT MEAN?? 1569 */ 1570 private void reloadUiFromBody(String bodyText, String bodyHtml) { 1571 String text = null; 1572 mHtmlTextRaw = null; 1573 boolean hasImages = false; 1574 1575 if (bodyHtml == null) { 1576 text = bodyText; 1577 /* 1578 * Convert the plain text to HTML 1579 */ 1580 StringBuffer sb = new StringBuffer("<html><body>"); 1581 if (text != null) { 1582 // Escape any inadvertent HTML in the text message 1583 text = EmailHtmlUtil.escapeCharacterToDisplay(text); 1584 // Find any embedded URL's and linkify 1585 Matcher m = Patterns.WEB_URL.matcher(text); 1586 while (m.find()) { 1587 int start = m.start(); 1588 /* 1589 * WEB_URL_PATTERN may match domain part of email address. To detect 1590 * this false match, the character just before the matched string 1591 * should not be '@'. 1592 */ 1593 if (start == 0 || text.charAt(start - 1) != '@') { 1594 String url = m.group(); 1595 Matcher proto = WEB_URL_PROTOCOL.matcher(url); 1596 String link; 1597 if (proto.find()) { 1598 // This is work around to force URL protocol part be lower case, 1599 // because WebView could follow only lower case protocol link. 1600 link = proto.group().toLowerCase() + url.substring(proto.end()); 1601 } else { 1602 // Patterns.WEB_URL matches URL without protocol part, 1603 // so added default protocol to link. 1604 link = "http://" + url; 1605 } 1606 String href = String.format("<a href=\"%s\">%s</a>", link, url); 1607 m.appendReplacement(sb, href); 1608 } 1609 else { 1610 m.appendReplacement(sb, "$0"); 1611 } 1612 } 1613 m.appendTail(sb); 1614 } 1615 sb.append("</body></html>"); 1616 text = sb.toString(); 1617 } else { 1618 text = bodyHtml; 1619 mHtmlTextRaw = bodyHtml; 1620 hasImages = IMG_TAG_START_REGEX.matcher(text).find(); 1621 } 1622 1623 // TODO this is not really accurate. 1624 // - Images aren't the only network resources. (e.g. CSS) 1625 // - If images are attached to the email and small enough, we download them at once, 1626 // and won't need network access when they're shown. 1627 if (hasImages) { 1628 if (mRestoredPictureLoaded) { 1629 blockNetworkLoads(false); 1630 addTabFlags(TAB_FLAGS_PICTURE_LOADED); // Set for next onSaveInstanceState 1631 1632 // Make sure to reset the flag -- otherwise this will keep taking effect even after 1633 // moving to another message. 1634 mRestoredPictureLoaded = false; 1635 } else { 1636 addTabFlags(TAB_FLAGS_HAS_PICTURES); 1637 } 1638 } 1639 setMessageHtml(text); 1640 1641 // Ask for attachments after body 1642 new LoadAttachmentsTask().executeParallel(mMessage.mId); 1643 1644 mIsMessageLoadedForTest = true; 1645 } 1646 1647 /** 1648 * Overrides for WebView behaviors. 1649 */ 1650 private class CustomWebViewClient extends WebViewClient { 1651 @Override 1652 public boolean shouldOverrideUrlLoading(WebView view, String url) { 1653 return mCallback.onUrlInMessageClicked(url); 1654 } 1655 } 1656 1657 private View findAttachmentView(long attachmentId) { 1658 for (int i = 0, count = mAttachments.getChildCount(); i < count; i++) { 1659 View view = mAttachments.getChildAt(i); 1660 MessageViewAttachmentInfo attachment = (MessageViewAttachmentInfo) view.getTag(); 1661 if (attachment.mId == attachmentId) { 1662 return view; 1663 } 1664 } 1665 return null; 1666 } 1667 1668 private MessageViewAttachmentInfo findAttachmentInfo(long attachmentId) { 1669 View view = findAttachmentView(attachmentId); 1670 if (view != null) { 1671 return (MessageViewAttachmentInfo)view.getTag(); 1672 } 1673 return null; 1674 } 1675 1676 /** 1677 * Controller results listener. We wrap it with {@link ControllerResultUiThreadWrapper}, 1678 * so all methods are called on the UI thread. 1679 */ 1680 private class ControllerResults extends Controller.Result { 1681 private long mWaitForLoadMessageId; 1682 1683 public void setWaitForLoadMessageId(long messageId) { 1684 mWaitForLoadMessageId = messageId; 1685 } 1686 1687 @Override 1688 public void loadMessageForViewCallback(MessagingException result, long accountId, 1689 long messageId, int progress) { 1690 if (messageId != mWaitForLoadMessageId) { 1691 // We are not waiting for this message to load, so exit quickly 1692 return; 1693 } 1694 if (result == null) { 1695 switch (progress) { 1696 case 0: 1697 mCallback.onLoadMessageStarted(); 1698 // Loading from network -- show the progress icon. 1699 showContent(false, true); 1700 break; 1701 case 100: 1702 mWaitForLoadMessageId = -1; 1703 mCallback.onLoadMessageFinished(); 1704 // reload UI and reload everything else too 1705 // pass false to LoadMessageTask to prevent looping here 1706 cancelAllTasks(); 1707 new LoadMessageTask(false).executeParallel(); 1708 break; 1709 default: 1710 // do nothing - we don't have a progress bar at this time 1711 break; 1712 } 1713 } else { 1714 mWaitForLoadMessageId = -1; 1715 String error = mContext.getString(R.string.status_network_error); 1716 mCallback.onLoadMessageError(error); 1717 resetView(); 1718 } 1719 } 1720 1721 @Override 1722 public void loadAttachmentCallback(MessagingException result, long accountId, 1723 long messageId, long attachmentId, int progress) { 1724 if (messageId == mMessageId) { 1725 if (result == null) { 1726 showAttachmentProgress(attachmentId, progress); 1727 switch (progress) { 1728 case 100: 1729 final MessageViewAttachmentInfo attachmentInfo = 1730 findAttachmentInfoFromView(attachmentId); 1731 if (attachmentInfo != null) { 1732 updatePreviewIcon(attachmentInfo); 1733 } 1734 doFinishLoadAttachment(attachmentId); 1735 break; 1736 default: 1737 // do nothing - we don't have a progress bar at this time 1738 break; 1739 } 1740 } else { 1741 MessageViewAttachmentInfo attachment = findAttachmentInfo(attachmentId); 1742 if (attachment == null) { 1743 // Called before LoadAttachmentsTask finishes. 1744 // (Possible if you quickly close & re-open a message) 1745 return; 1746 } 1747 attachment.cancelButton.setVisibility(View.GONE); 1748 attachment.loadButton.setVisibility(View.VISIBLE); 1749 attachment.hideProgress(); 1750 1751 final String error; 1752 if (result.getCause() instanceof IOException) { 1753 error = mContext.getString(R.string.status_network_error); 1754 } else { 1755 error = mContext.getString( 1756 R.string.message_view_load_attachment_failed_toast, 1757 attachment.mName); 1758 } 1759 mCallback.onLoadMessageError(error); 1760 } 1761 } 1762 } 1763 1764 private void showAttachmentProgress(long attachmentId, int progress) { 1765 MessageViewAttachmentInfo attachment = findAttachmentInfo(attachmentId); 1766 if (attachment != null) { 1767 if (progress == 0) { 1768 attachment.cancelButton.setVisibility(View.GONE); 1769 } 1770 attachment.showProgress(progress); 1771 } 1772 } 1773 } 1774 1775 /** 1776 * Class to detect update on the current message (e.g. toggle star). When it gets content 1777 * change notifications, it kicks {@link ReloadMessageTask}. 1778 */ 1779 private class MessageObserver extends ContentObserver implements Runnable { 1780 private final Throttle mThrottle; 1781 private final ContentResolver mContentResolver; 1782 1783 private boolean mRegistered; 1784 1785 public MessageObserver(Handler handler, Context context) { 1786 super(handler); 1787 mContentResolver = context.getContentResolver(); 1788 mThrottle = new Throttle("MessageObserver", this, handler); 1789 } 1790 1791 public void unregister() { 1792 if (!mRegistered) { 1793 return; 1794 } 1795 mThrottle.cancelScheduledCallback(); 1796 mContentResolver.unregisterContentObserver(this); 1797 mRegistered = false; 1798 } 1799 1800 public void register(Uri notifyUri) { 1801 unregister(); 1802 mContentResolver.registerContentObserver(notifyUri, true, this); 1803 mRegistered = true; 1804 } 1805 1806 @Override 1807 public boolean deliverSelfNotifications() { 1808 return true; 1809 } 1810 1811 @Override 1812 public void onChange(boolean selfChange) { 1813 mThrottle.onEvent(); 1814 } 1815 1816 /** This method is delay-called by {@link Throttle} on the UI thread. */ 1817 @Override 1818 public void run() { 1819 // This method is delay-called, so need to make sure if it's still registered. 1820 if (mRegistered) { 1821 new ReloadMessageTask().cancelPreviousAndExecuteParallel(); 1822 } 1823 } 1824 } 1825 1826 private void updatePreviewIcon(MessageViewAttachmentInfo attachmentInfo) { 1827 new UpdatePreviewIconTask(attachmentInfo).executeParallel(); 1828 } 1829 1830 private class UpdatePreviewIconTask extends EmailAsyncTask<Void, Void, Bitmap> { 1831 @SuppressWarnings("hiding") 1832 private final Context mContext; 1833 private final MessageViewAttachmentInfo mAttachmentInfo; 1834 1835 public UpdatePreviewIconTask(MessageViewAttachmentInfo attachmentInfo) { 1836 super(mTaskTracker); 1837 mContext = getActivity(); 1838 mAttachmentInfo = attachmentInfo; 1839 } 1840 1841 @Override 1842 protected Bitmap doInBackground(Void... params) { 1843 return getPreviewIcon(mContext, mAttachmentInfo); 1844 } 1845 1846 @Override 1847 protected void onPostExecute(Bitmap result) { 1848 if (result == null) { 1849 return; 1850 } 1851 mAttachmentInfo.iconView.setImageBitmap(result); 1852 } 1853 } 1854 1855 public boolean isMessageLoadedForTest() { 1856 return mIsMessageLoadedForTest; 1857 } 1858 1859 public void clearIsMessageLoadedForTest() { 1860 mIsMessageLoadedForTest = true; 1861 } 1862} 1863