k-9/src/com/fsck/k9/view/SingleMessageView.java

314 lines
12 KiB
Java

package com.fsck.k9.view;
import android.app.Activity;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ResolveInfo;
import android.database.Cursor;
import android.net.Uri;
import android.util.AttributeSet;
import android.util.Log;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;
import com.fsck.k9.Account;
import com.fsck.k9.K9;
import com.fsck.k9.R;
import com.fsck.k9.controller.MessagingController;
import com.fsck.k9.controller.MessagingListener;
import com.fsck.k9.crypto.CryptoProvider;
import com.fsck.k9.crypto.PgpData;
import com.fsck.k9.helper.Contacts;
import com.fsck.k9.helper.Utility;
import com.fsck.k9.mail.*;
import com.fsck.k9.mail.internet.MimeUtility;
import com.fsck.k9.mail.store.LocalStore;
import java.util.List;
/**
*/
public class SingleMessageView extends LinearLayout {
private boolean mScreenReaderEnabled;
private MessageCryptoView mCryptoView;
private MessageWebView mMessageContentView;
private AccessibleWebView mAccessibleMessageContentView;
private MessageHeader mHeaderContainer;
private LinearLayout mAttachments;
private View mShowPicturesSection;
private boolean mShowPictures;
private Button mDownloadRemainder;
private LayoutInflater mInflater;
private Contacts mContacts;
private AttachmentView.AttachmentFileDownloadCallback attachmentCallback;
public void initialize(Activity activity) {
mMessageContentView = (MessageWebView) findViewById(R.id.message_content);
mAccessibleMessageContentView = (AccessibleWebView) findViewById(R.id.accessible_message_content);
mAttachments = (LinearLayout) findViewById(R.id.attachments);
mHeaderContainer = (MessageHeader) findViewById(R.id.header_container);
mCryptoView = (MessageCryptoView) findViewById(R.id.layout_decrypt);
mCryptoView.setActivity(activity);
mCryptoView.setupChildViews();
mShowPicturesSection = findViewById(R.id.show_pictures_section);
mShowPictures = false;
mContacts = Contacts.getInstance(activity);
mInflater = activity.getLayoutInflater();
mDownloadRemainder = (Button) findViewById(R.id.download_remainder);
mMessageContentView.configure();
mAttachments.setVisibility(View.GONE);
if (isScreenReaderActive(activity)) {
mAccessibleMessageContentView.setVisibility(View.VISIBLE);
mMessageContentView.setVisibility(View.GONE);
mScreenReaderEnabled = true;
} else {
mAccessibleMessageContentView.setVisibility(View.GONE);
mMessageContentView.setVisibility(View.VISIBLE);
mScreenReaderEnabled = false;
}
}
public SingleMessageView(Context context, AttributeSet attrs) {
super(context, attrs);
}
private boolean isScreenReaderActive(Activity activity) {
final String SCREENREADER_INTENT_ACTION = "android.accessibilityservice.AccessibilityService";
final String SCREENREADER_INTENT_CATEGORY = "android.accessibilityservice.category.FEEDBACK_SPOKEN";
// Restrict the set of intents to only accessibility services that have
// the category FEEDBACK_SPOKEN (aka, screen readers).
Intent screenReaderIntent = new Intent(SCREENREADER_INTENT_ACTION);
screenReaderIntent.addCategory(SCREENREADER_INTENT_CATEGORY);
List<ResolveInfo> screenReaders = activity.getPackageManager().queryIntentServices(
screenReaderIntent, 0);
ContentResolver cr = activity.getContentResolver();
Cursor cursor = null;
int status = 0;
for (ResolveInfo screenReader : screenReaders) {
// All screen readers are expected to implement a content provider
// that responds to
// content://<nameofpackage>.providers.StatusProvider
cursor = cr.query(Uri.parse("content://" + screenReader.serviceInfo.packageName
+ ".providers.StatusProvider"), null, null, null, null);
if (cursor != null) {
cursor.moveToFirst();
// These content providers use a special cursor that only has
// one element,
// an integer that is 1 if the screen reader is running.
status = cursor.getInt(0);
cursor.close();
if (status == 1) {
return true;
}
}
}
return false;
}
public boolean showPictures() {
return mShowPictures;
}
public void setShowPictures(Boolean show) {
mShowPictures = show;
}
/**
* Enable/disable image loading of the WebView. But always hide the
* "Show pictures" button!
*
* @param enable true, if (network) images should be loaded.
* false, otherwise.
*/
public void setLoadPictures(boolean enable) {
mMessageContentView.blockNetworkData(!enable);
setShowPictures(enable);
showShowPicturesSection(false);
}
public Button downloadRemainderButton() {
return mDownloadRemainder;
}
public void showShowPicturesSection(boolean show) {
mShowPicturesSection.setVisibility(show ? View.VISIBLE : View.GONE);
}
public void setHeaders(final Message message, Account account) {
try {
mHeaderContainer.populate(message, account);
} catch (Exception me) {
Log.e(K9.LOG_TAG, "setHeaders - error", me);
}
}
public void setShowDownloadButton(Message message) {
if (message.isSet(Flag.X_DOWNLOADED_FULL)) {
mDownloadRemainder.setVisibility(View.GONE);
} else {
mDownloadRemainder.setEnabled(true);
mDownloadRemainder.setVisibility(View.VISIBLE);
}
}
public void setOnFlagListener(OnClickListener listener) {
mHeaderContainer.setOnFlagListener(listener);
}
public void showAllHeaders() {
mHeaderContainer.onShowAdditionalHeaders();
}
public boolean additionalHeadersVisible() {
return mHeaderContainer.additionalHeadersVisible();
}
public void displayMessageBody(Account account, String folder, String uid, Message message, PgpData pgpData) throws MessagingException {
// TODO - really this code path? this is an odd place to put it
removeAllAttachments();
String type;
String text = pgpData.getDecryptedData();
if (text != null) {
type = "text/plain";
} else {
// getTextForDisplay() always returns HTML-ified content.
text = ((LocalStore.LocalMessage) message).getTextForDisplay();
type = "text/html";
}
if (text != null) {
final String emailText = text;
final String contentType = type;
loadBodyFromText(account.getCryptoProvider(), pgpData, message, emailText, contentType);
// If the message contains external pictures and the "Show pictures"
// button wasn't already pressed, see if the user's preferences has us
// showing them anyway.
if (Utility.hasExternalImages(text) && !showPictures()) {
if ((account.getShowPictures() == Account.ShowPictures.ALWAYS) ||
((account.getShowPictures() == Account.ShowPictures.ONLY_FROM_CONTACTS) &&
mContacts.isInContacts(message.getFrom()[0].getAddress()))) {
setLoadPictures(true);
} else {
showShowPicturesSection(true);
}
}
} else {
loadBodyFromUrl("file:///android_asset/empty.html");
}
}
public void loadBodyFromUrl(String url) {
mMessageContentView.loadUrl(url);
mCryptoView.hide();
}
public void loadBodyFromText(CryptoProvider cryptoProvider, PgpData pgpData, Message message, String emailText, String contentType) {
if (mScreenReaderEnabled) {
mAccessibleMessageContentView.loadDataWithBaseURL("http://", emailText, contentType, "utf-8", null);
} else {
mMessageContentView.loadDataWithBaseURL("http://", emailText, contentType, "utf-8", null);
mMessageContentView.scrollTo(0, 0);
}
updateCryptoLayout(cryptoProvider, pgpData, message);
}
public void updateCryptoLayout(CryptoProvider cp, PgpData pgpData, Message message) {
mCryptoView.updateLayout(cp, pgpData, message);
}
public void setAttachmentsEnabled(boolean enabled) {
for (int i = 0, count = mAttachments.getChildCount(); i < count; i++) {
AttachmentView attachment = (AttachmentView) mAttachments.getChildAt(i);
attachment.viewButton.setEnabled(enabled);
attachment.downloadButton.setEnabled(enabled);
}
}
public void removeAllAttachments() {
for (int i = 0, count = mAttachments.getChildCount(); i < count; i++) {
mAttachments.removeView(mAttachments.getChildAt(i));
}
}
public void renderAttachments(Part part, int depth,
Message message, Account account, MessagingController controller, MessagingListener listener) throws MessagingException {
if (part.getBody() instanceof Multipart) {
Multipart mp = (Multipart) part.getBody();
for (int i = 0; i < mp.getCount(); i++) {
renderAttachments(mp.getBodyPart(i), depth + 1, message, account, controller, listener);
}
} else if (part instanceof LocalStore.LocalAttachmentBodyPart) {
String contentDisposition = MimeUtility.unfoldAndDecode(part.getDisposition());
// Inline parts with a content-id are almost certainly components of an HTML message
// not attachments. Don't show attachment download buttons for them.
if (contentDisposition != null &&
MimeUtility.getHeaderParameter(contentDisposition, null).matches("^(?i:inline)")
&& part.getHeader("Content-ID") != null) {
return;
}
AttachmentView view = (AttachmentView)mInflater.inflate(R.layout.message_view_attachment, null);
view.setCallback(attachmentCallback);
if (view.populateFromPart(part, message, account, controller, listener)) {
addAttachment(view);
}
}
}
public void addAttachment(View attachmentView) {
mAttachments.addView(attachmentView);
mAttachments.setVisibility(View.VISIBLE);
}
public void zoom(KeyEvent event) {
if (mScreenReaderEnabled) {
mAccessibleMessageContentView.zoomIn();
} else {
if (event.isShiftPressed()) {
mMessageContentView.zoomIn();
} else {
mMessageContentView.zoomOut();
}
}
}
public void beginSelectingText() {
mMessageContentView.emulateShiftHeld();
}
public void resetView() {
setLoadPictures(false);
mMessageContentView.scrollTo(0, 0);
mHeaderContainer.setVisibility(View.GONE);
mMessageContentView.clearView();
mAttachments.removeAllViews();
}
public AttachmentView.AttachmentFileDownloadCallback getAttachmentCallback() {
return attachmentCallback;
}
public void setAttachmentCallback(
AttachmentView.AttachmentFileDownloadCallback attachmentCallback) {
this.attachmentCallback = attachmentCallback;
}
}