ADHOC/replicant-packages_apps_Email
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Inline images are not displayed for IMAP and POP emails

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b/11998344

This solution covers these use cases:

1) Inline images in the Email app.
2) Inline images in .eml attachments in the Email and Gmail apps.

The solution here was to override shouldInterceptRequest(...) in
the WebViewClients and resolve any cid urls that are encountered
within the email body.

EmailProvider and EmlAttachmentProvider both gained the ability to
query for an Attachment object using a message ID and cid (which
is stored in the database column: contentId).

With this new query in place, it was straightforward to fetch the
Attachment in the WebViewClient and then obtain an InputStream to
the file that backs the Attachment to return back to the WebView.

Change-Id: I865a74fc291915c0d66a7492763a5f5682365b92
This commit is contained in:
James Lemieux 2014-04-09 12:59:28 -07:00
parent 7e4d99c6d4
commit 8cfbfb50bb
1 changed files with 72 additions and 25 deletions
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97
src/com/android/email/provider/EmailProvider.java
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@ -252,15 +252,16 @@ public class EmailProvider extends ContentProvider {
private static final int UI_ACCTS = UI_BASE + 8;
private static final int UI_ATTACHMENTS = UI_BASE + 9;
private static final int UI_ATTACHMENT = UI_BASE + 10;
private static final int UI_SEARCH = UI_BASE + 11;
private static final int UI_ACCOUNT_DATA = UI_BASE + 12;
private static final int UI_FOLDER_LOAD_MORE = UI_BASE + 13;
private static final int UI_CONVERSATION = UI_BASE + 14;
private static final int UI_RECENT_FOLDERS = UI_BASE + 15;
private static final int UI_DEFAULT_RECENT_FOLDERS = UI_BASE + 16;
private static final int UI_FULL_FOLDERS = UI_BASE + 17;
private static final int UI_ALL_FOLDERS = UI_BASE + 18;
private static final int UI_PURGE_FOLDER = UI_BASE + 19;
private static final int UI_ATTACHMENT_BY_CID = UI_BASE + 11;
private static final int UI_SEARCH = UI_BASE + 12;
private static final int UI_ACCOUNT_DATA = UI_BASE + 13;
private static final int UI_FOLDER_LOAD_MORE = UI_BASE + 14;
private static final int UI_CONVERSATION = UI_BASE + 15;
private static final int UI_RECENT_FOLDERS = UI_BASE + 16;
private static final int UI_DEFAULT_RECENT_FOLDERS = UI_BASE + 17;
private static final int UI_FULL_FOLDERS = UI_BASE + 18;
private static final int UI_ALL_FOLDERS = UI_BASE + 19;
private static final int UI_PURGE_FOLDER = UI_BASE + 20;
private static final int BODY_BASE = 0xA000;
private static final int BODY = BODY_BASE;
@ -1132,6 +1133,7 @@ public class EmailProvider extends ContentProvider {
sURIMatcher.addURI(EmailContent.AUTHORITY, "uiaccts", UI_ACCTS);
sURIMatcher.addURI(EmailContent.AUTHORITY, "uiattachments/#", UI_ATTACHMENTS);
sURIMatcher.addURI(EmailContent.AUTHORITY, "uiattachment/#", UI_ATTACHMENT);
sURIMatcher.addURI(EmailContent.AUTHORITY, "uiattachmentbycid/#/*", UI_ATTACHMENT_BY_CID);
sURIMatcher.addURI(EmailContent.AUTHORITY, "uisearch/#", UI_SEARCH);
sURIMatcher.addURI(EmailContent.AUTHORITY, "uiaccountdata/#", UI_ACCOUNT_DATA);
sURIMatcher.addURI(EmailContent.AUTHORITY, "uiloadmore/#", UI_FOLDER_LOAD_MORE);
@ -1218,7 +1220,7 @@ public class EmailProvider extends ContentProvider {
try {
switch (match) {
// First, dispatch queries from UnfiedEmail
// First, dispatch queries from UnifiedEmail
case UI_SEARCH:
c = uiSearch(uri, projection);
return c;
@ -1234,6 +1236,7 @@ public class EmailProvider extends ContentProvider {
case UI_ACCOUNT:
case UI_ATTACHMENT:
case UI_ATTACHMENTS:
case UI_ATTACHMENT_BY_CID:
case UI_CONVERSATION:
case UI_RECENT_FOLDERS:
case UI_FULL_FOLDERS:
@ -2393,6 +2396,8 @@ public class EmailProvider extends ContentProvider {
.add(UIProvider.MessageColumns.HAS_ATTACHMENTS, MessageColumns.FLAG_ATTACHMENT)
.add(UIProvider.MessageColumns.ATTACHMENT_LIST_URI,
uriWithFQId("uiattachments", Message.TABLE_NAME))
.add(UIProvider.MessageColumns.ATTACHMENT_BY_CID_URI,
uriWithFQId("uiattachmentbycid", Message.TABLE_NAME))
.add(UIProvider.MessageColumns.MESSAGE_FLAGS, MESSAGE_FLAGS)
.add(UIProvider.MessageColumns.DRAFT_TYPE, MESSAGE_DRAFT_TYPE)
.add(UIProvider.MessageColumns.MESSAGE_ACCOUNT_URI,
@ -3724,23 +3729,56 @@ public class EmailProvider extends ContentProvider {
* @param uiProjection as passed from UnifiedEmail
* @return the SQLite query to be executed on the EmailProvider database
*/
private String genQueryAttachment(String[] uiProjection, String idString) {
Long id = Long.parseLong(idString);
Attachment att = Attachment.restoreAttachmentWithId(getContext(), id);
private String genQueryAttachment(String[] uiProjection) {
// MAKE SURE THESE VALUES STAY IN SYNC WITH GEN QUERY ATTACHMENTS
ContentValues values = new ContentValues(2);
if (TextUtils.isEmpty(att.getContentUri())) {
values.put(AttachmentColumns.CONTENT_URI,
AttachmentUtilities.getAttachmentUri(att.mAccountKey, id).toString());
}
final ContentValues values = new ContentValues(2);
values.put(AttachmentColumns.CONTENT_URI, createAttachmentUriColumnSQL());
values.put(UIProvider.AttachmentColumns.SUPPORTS_DOWNLOAD_AGAIN, 1);
StringBuilder sb = genSelect(getAttachmentMap(), uiProjection, values);
sb.append(" FROM ")
.append(Attachment.TABLE_NAME)
return genSelect(getAttachmentMap(), uiProjection, values)
.append(" FROM ").append(Attachment.TABLE_NAME)
.append(" WHERE ")
.append(AttachmentColumns._ID)
.append(" =? ");
return sb.toString();
.append(AttachmentColumns._ID).append(" =? ")
.toString();
}
/**
* Generate the "single attachment by Content ID" SQLite query, given a projection from
* UnifiedEmail
*
* @param uiProjection as passed from UnifiedEmail
* @return the SQLite query to be executed on the EmailProvider database
*/
private String genQueryAttachmentByMessageIDAndCid(String[] uiProjection) {
final ContentValues values = new ContentValues(2);
values.put(AttachmentColumns.CONTENT_URI, createAttachmentUriColumnSQL());
values.put(UIProvider.AttachmentColumns.SUPPORTS_DOWNLOAD_AGAIN, 1);
return genSelect(getAttachmentMap(), uiProjection, values)
.append(" FROM ").append(Attachment.TABLE_NAME)
.append(" WHERE ")
.append(AttachmentColumns.MESSAGE_KEY).append(" =? ")
.append(" AND ")
.append(AttachmentColumns.CONTENT_ID).append(" =? ")
.toString();
}
/**
* @return a fragment of SQL that is the expression which, when evaluated for a particular
* Attachment row, produces the Content URI for the attachment
*/
private static String createAttachmentUriColumnSQL() {
final String uriPrefix = Attachment.ATTACHMENT_PROVIDER_URI_PREFIX;
final String accountKey = AttachmentColumns.ACCOUNT_KEY;
final String id = AttachmentColumns._ID;
final String raw = AttachmentUtilities.FORMAT_RAW;
final String contentUri = String.format("%s/' || %s || '/' || %s || '/%s", uriPrefix,
accountKey, id, raw);
return "@CASE " +
"WHEN contentUri IS NULL THEN '" + contentUri + "' " +
"WHEN contentUri IS NOT NULL THEN contentUri " +
"END";
}
/**
@ -4312,9 +4350,18 @@ public class EmailProvider extends ContentProvider {
notifyUri = UIPROVIDER_ATTACHMENTS_NOTIFIER.buildUpon().appendPath(id).build();
break;
case UI_ATTACHMENT:
c = db.rawQuery(genQueryAttachment(uiProjection, id), new String[] {id});
c = db.rawQuery(genQueryAttachment(uiProjection), new String[] {id});
notifyUri = UIPROVIDER_ATTACHMENT_NOTIFIER.buildUpon().appendPath(id).build();
break;
case UI_ATTACHMENT_BY_CID:
final String cid = uri.getPathSegments().get(2);
final String[] selectionArgs = {id, cid};
c = db.rawQuery(genQueryAttachmentByMessageIDAndCid(uiProjection), selectionArgs);
// we don't have easy access to the attachment ID (which is buried in the cursor
// being returned), so we notify on the parent message object
notifyUri = UIPROVIDER_ATTACHMENTS_NOTIFIER.buildUpon().appendPath(id).build();
break;
case UI_FOLDER:
mailboxId = Long.parseLong(id);
if (isVirtualMailbox(mailboxId)) {