src/com/android/mail/ui/SecureConversationViewFragment.java - platform/packages/apps/UnifiedEmail - Gitiles

 /*
  * Copyright (C) 2012 Google Inc.
  * Licensed to The Android Open Source Project.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 package com.android.mail.ui;

 import android.content.Loader;
 import android.database.Cursor;
 import android.net.Uri;
 import android.os.Bundle;
 import android.text.Html;
 import android.text.SpannedString;
 import android.text.TextUtils;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.webkit.WebSettings;
 import android.webkit.WebSettings.LayoutAlgorithm;
 import android.webkit.WebView;
 import android.webkit.WebViewClient;
 import android.widget.ScrollView;

 import com.android.mail.R;
 import com.android.mail.browse.ConversationViewAdapter;
 import com.android.mail.browse.ConversationViewHeader;
 import com.android.mail.browse.MessageCursor;
 import com.android.mail.browse.MessageFooterView;
 import com.android.mail.browse.MessageHeaderView;
 import com.android.mail.browse.ConversationViewAdapter.MessageHeaderItem;
 import com.android.mail.browse.MessageCursor.ConversationMessage;
 import com.android.mail.browse.MessageHeaderView.MessageHeaderViewCallbacks;
 import com.android.mail.providers.Account;
 import com.android.mail.providers.Conversation;
 import com.android.mail.providers.Message;
 import com.android.mail.providers.UIProvider;
 import com.android.mail.utils.LogTag;
 import com.android.mail.utils.LogUtils;

 import java.util.HashSet;

 public class SecureConversationViewFragment extends AbstractConversationViewFragment implements
         MessageHeaderViewCallbacks {
     private static final String LOG_TAG = LogTag.getLogTag();
     private WebView mWebView;
     private ConversationViewHeader mConversationHeaderView;
     private MessageHeaderView mMessageHeaderView;
     private MessageFooterView mMessageFooterView;
     private ConversationMessage mMessage;
     private ScrollView mScrollView;

     private WebViewClient mWebViewClient = new AbstractConversationWebViewClient() {
         @Override
         public void onPageFinished(WebView view, String url) {
             if (isUserVisible()) {
                 onConversationSeen();
             }

             dismissLoadingStatus();
         }
     };

     /**
      * Creates a new instance of {@link ConversationViewFragment}, initialized
      * to display a conversation with other parameters inherited/copied from an
      * existing bundle, typically one created using {@link #makeBasicArgs}.
      */
     public static SecureConversationViewFragment newInstance(Bundle existingArgs,
             Conversation conversation) {
         SecureConversationViewFragment f = new SecureConversationViewFragment();
         Bundle args = new Bundle(existingArgs);
         args.putParcelable(ARG_CONVERSATION, conversation);
         f.setArguments(args);
         return f;
     }

     /**
      * Constructor needs to be public to handle orientation changes and activity
      * lifecycle events.
      */
     public SecureConversationViewFragment() {
         super();
     }

     @Override
     public void onActivityCreated(Bundle savedInstanceState) {
         super.onActivityCreated(savedInstanceState);
         mConversationHeaderView.setCallbacks(this, this);
         mConversationHeaderView.setFoldersVisible(false);
         final SubjectDisplayChanger sdc = mActivity.getSubjectDisplayChanger();
         if (sdc != null) {
             sdc.setSubject(mConversation.subject);
         }
         mConversationHeaderView.setSubject(mConversation.subject);
         mMessageHeaderView.setContactInfoSource(getContactInfoSource());
         mMessageHeaderView.setCallbacks(this);
         mMessageHeaderView.setExpandable(false);
         mMessageHeaderView.setVeiledMatcher(
                 ((ControllableActivity) getActivity()).getAccountController()
                         .getVeiledAddressMatcher());
         getLoaderManager().initLoader(MESSAGE_LOADER, null, getMessageLoaderCallbacks());
         showLoadingStatus();
     }

     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
             Bundle savedInstanceState) {
         View rootView = inflater.inflate(R.layout.secure_conversation_view, container, false);
         mScrollView = (ScrollView) rootView.findViewById(R.id.scroll_view);
         mConversationHeaderView = (ConversationViewHeader) rootView.findViewById(R.id.conv_header);
         mMessageHeaderView = (MessageHeaderView) rootView.findViewById(R.id.message_header);
         mMessageFooterView = (MessageFooterView) rootView.findViewById(R.id.message_footer);
         instantiateProgressIndicators(rootView);
         mWebView = (WebView) rootView.findViewById(R.id.webview);
         mWebView.setWebViewClient(mWebViewClient);
         mWebView.setFocusable(false);
         final WebSettings settings = mWebView.getSettings();

         settings.setJavaScriptEnabled(false);
         settings.setLayoutAlgorithm(LayoutAlgorithm.NORMAL);

         settings.setSupportZoom(true);
         settings.setBuiltInZoomControls(true);
         settings.setDisplayZoomControls(false);

         return rootView;
     }

     @Override
     protected WebView getWebView() {
         return mWebView;
     }

     @Override
     protected void markUnread() {
         // Ignore unsafe calls made after a fragment is detached from an
         // activity
         final ControllableActivity activity = (ControllableActivity) getActivity();
         if (activity == null || mConversation == null || mMessage == null) {
             LogUtils.w(LOG_TAG, "ignoring markUnread for conv=%s",
                     mConversation != null ? mConversation.id : 0);
             return;
         }
         HashSet<Uri> uris = new HashSet<Uri>();
         uris.add(mMessage.uri);
         activity.getConversationUpdater().markConversationMessagesUnread(mConversation, uris,
                 mViewState.getConversationInfo());
     }

     @Override
     public void onAccountChanged(Account newAccount, Account oldAccount) {
         // Do nothing.
     }

     @Override
     public void setMessageSpacerHeight(MessageHeaderItem item, int newSpacerHeight) {
         // Do nothing.
     }

     @Override
     public void setMessageExpanded(MessageHeaderItem item, int newSpacerHeight) {
         // Do nothing.
     }

     @Override
     public void onConversationViewHeaderHeightChange(int newHeight) {
         // Do nothing.
     }

     @Override
     public void onUserVisibleHintChanged() {
         if (mActivity == null) {
             return;
         }
         final SubjectDisplayChanger sdc = mActivity.getSubjectDisplayChanger();
         if (sdc != null) {
             sdc.setSubject(mConversation.subject);
         }
         mConversationHeaderView.setSubject(mConversation.subject);
         this.mScrollView.scrollTo(0, 0);
         onConversationSeen();
     }

     @Override
     public void showExternalResources(final Message msg) {
         mWebView.getSettings().setBlockNetworkImage(false);
     }

     @Override
     public void showExternalResources(final String rawSenderAddress) {
         mWebView.getSettings().setBlockNetworkImage(false);
     }

     @Override
     protected void onMessageCursorLoadFinished(Loader<Cursor> loader, MessageCursor newCursor,
             MessageCursor oldCursor) {
         // ignore cursors that are still loading results
         if (newCursor == null || !newCursor.isLoaded()) {
             LogUtils.i(LOG_TAG, "CONV RENDER: existing cursor is null, rendering from scratch");
             return;
         }
         if (mActivity == null || mActivity.isFinishing()) {
             // Activity is finishing, just bail.
             return;
         }
         renderMessageBodies(newCursor, mEnableContentReadySignal);
     }

     /**
      * Populate the adapter with overlay views (message headers, super-collapsed
      * blocks, a conversation header), and return an HTML document with spacer
      * divs inserted for all overlays.
      */
     private void renderMessageBodies(MessageCursor messageCursor,
             boolean enableContentReadySignal) {
         StringBuilder convHtml = new StringBuilder();
         String content;
         if (messageCursor.moveToFirst()) {
             content = messageCursor.getString(UIProvider.MESSAGE_BODY_HTML_COLUMN);
             if (TextUtils.isEmpty(content)) {
                 content = messageCursor.getString(UIProvider.MESSAGE_BODY_TEXT_COLUMN);
                 if (content != null) {
                     content = Html.toHtml(new SpannedString(content));
                 }
             }
             convHtml.append(content);
             mMessage = messageCursor.getMessage();
             mWebView.getSettings().setBlockNetworkImage(!mMessage.alwaysShowImages);
             mWebView.loadDataWithBaseURL(mBaseUri, convHtml.toString(), "text/html", "utf-8", null);
             ConversationViewAdapter mAdapter = new ConversationViewAdapter(mActivity, null, null,
                     null, null, null, null, null, null);
             MessageHeaderItem item = mAdapter.newMessageHeaderItem(mMessage, true,
                     mMessage.alwaysShowImages);
             mMessageHeaderView.initialize(mDateBuilder, this, mAddressCache);
             mMessageHeaderView.setExpandMode(MessageHeaderView.POPUP_MODE);
             mMessageHeaderView.bind(item, false);
             mMessageHeaderView.setMessageDetailsVisibility(View.VISIBLE);
             if (mMessage.hasAttachments) {
                 mMessageFooterView.setVisibility(View.VISIBLE);
                 mMessageFooterView.initialize(getLoaderManager(), getFragmentManager());
                 mMessageFooterView.bind(item, false);
             }
         }
     }

     @Override
     public void onConversationUpdated(Conversation conv) {
         final ConversationViewHeader headerView = mConversationHeaderView;
         if (headerView != null) {
             headerView.onConversationUpdated(conv);
         }
     }

     @Override
     public void setMessageDetailsExpanded(MessageHeaderItem i, boolean expanded, int heightbefore) {
         // Do nothing.
     }
 }
	/*
	* Copyright (C) 2012 Google Inc.
	* Licensed to The Android Open Source Project.
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	package com.android.mail.ui;

	import android.content.Loader;
	import android.database.Cursor;
	import android.net.Uri;
	import android.os.Bundle;
	import android.text.Html;
	import android.text.SpannedString;
	import android.text.TextUtils;
	import android.view.LayoutInflater;
	import android.view.View;
	import android.view.ViewGroup;
	import android.webkit.WebSettings;
	import android.webkit.WebSettings.LayoutAlgorithm;
	import android.webkit.WebView;
	import android.webkit.WebViewClient;
	import android.widget.ScrollView;

	import com.android.mail.R;
	import com.android.mail.browse.ConversationViewAdapter;
	import com.android.mail.browse.ConversationViewHeader;
	import com.android.mail.browse.MessageCursor;
	import com.android.mail.browse.MessageFooterView;
	import com.android.mail.browse.MessageHeaderView;
	import com.android.mail.browse.ConversationViewAdapter.MessageHeaderItem;
	import com.android.mail.browse.MessageCursor.ConversationMessage;
	import com.android.mail.browse.MessageHeaderView.MessageHeaderViewCallbacks;
	import com.android.mail.providers.Account;
	import com.android.mail.providers.Conversation;
	import com.android.mail.providers.Message;
	import com.android.mail.providers.UIProvider;
	import com.android.mail.utils.LogTag;
	import com.android.mail.utils.LogUtils;

	import java.util.HashSet;

	public class SecureConversationViewFragment extends AbstractConversationViewFragment implements
	MessageHeaderViewCallbacks {
	private static final String LOG_TAG = LogTag.getLogTag();
	private WebView mWebView;
	private ConversationViewHeader mConversationHeaderView;
	private MessageHeaderView mMessageHeaderView;
	private MessageFooterView mMessageFooterView;
	private ConversationMessage mMessage;
	private ScrollView mScrollView;

	private WebViewClient mWebViewClient = new AbstractConversationWebViewClient() {
	@Override
	public void onPageFinished(WebView view, String url) {
	if (isUserVisible()) {
	onConversationSeen();
	}

	dismissLoadingStatus();
	}
	};

	/**
	* Creates a new instance of {@link ConversationViewFragment}, initialized
	* to display a conversation with other parameters inherited/copied from an
	* existing bundle, typically one created using {@link #makeBasicArgs}.
	*/
	public static SecureConversationViewFragment newInstance(Bundle existingArgs,
	Conversation conversation) {
	SecureConversationViewFragment f = new SecureConversationViewFragment();
	Bundle args = new Bundle(existingArgs);
	args.putParcelable(ARG_CONVERSATION, conversation);
	f.setArguments(args);
	return f;
	}

	/**
	* Constructor needs to be public to handle orientation changes and activity
	* lifecycle events.
	*/
	public SecureConversationViewFragment() {
	super();
	}

	@Override
	public void onActivityCreated(Bundle savedInstanceState) {
	super.onActivityCreated(savedInstanceState);
	mConversationHeaderView.setCallbacks(this, this);
	mConversationHeaderView.setFoldersVisible(false);
	final SubjectDisplayChanger sdc = mActivity.getSubjectDisplayChanger();
	if (sdc != null) {
	sdc.setSubject(mConversation.subject);
	}
	mConversationHeaderView.setSubject(mConversation.subject);
	mMessageHeaderView.setContactInfoSource(getContactInfoSource());
	mMessageHeaderView.setCallbacks(this);
	mMessageHeaderView.setExpandable(false);
	mMessageHeaderView.setVeiledMatcher(
	((ControllableActivity) getActivity()).getAccountController()
	.getVeiledAddressMatcher());
	getLoaderManager().initLoader(MESSAGE_LOADER, null, getMessageLoaderCallbacks());
	showLoadingStatus();
	}

	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
	Bundle savedInstanceState) {
	View rootView = inflater.inflate(R.layout.secure_conversation_view, container, false);
	mScrollView = (ScrollView) rootView.findViewById(R.id.scroll_view);
	mConversationHeaderView = (ConversationViewHeader) rootView.findViewById(R.id.conv_header);
	mMessageHeaderView = (MessageHeaderView) rootView.findViewById(R.id.message_header);
	mMessageFooterView = (MessageFooterView) rootView.findViewById(R.id.message_footer);
	instantiateProgressIndicators(rootView);
	mWebView = (WebView) rootView.findViewById(R.id.webview);
	mWebView.setWebViewClient(mWebViewClient);
	mWebView.setFocusable(false);
	final WebSettings settings = mWebView.getSettings();

	settings.setJavaScriptEnabled(false);
	settings.setLayoutAlgorithm(LayoutAlgorithm.NORMAL);

	settings.setSupportZoom(true);
	settings.setBuiltInZoomControls(true);
	settings.setDisplayZoomControls(false);

	return rootView;
	}

	@Override
	protected WebView getWebView() {
	return mWebView;
	}

	@Override
	protected void markUnread() {
	// Ignore unsafe calls made after a fragment is detached from an
	// activity
	final ControllableActivity activity = (ControllableActivity) getActivity();
	if (activity == null \|\| mConversation == null \|\| mMessage == null) {
	LogUtils.w(LOG_TAG, "ignoring markUnread for conv=%s",
	mConversation != null ? mConversation.id : 0);
	return;
	}
	HashSet<Uri> uris = new HashSet<Uri>();
	uris.add(mMessage.uri);
	activity.getConversationUpdater().markConversationMessagesUnread(mConversation, uris,
	mViewState.getConversationInfo());
	}

	@Override
	public void onAccountChanged(Account newAccount, Account oldAccount) {
	// Do nothing.
	}

	@Override
	public void setMessageSpacerHeight(MessageHeaderItem item, int newSpacerHeight) {
	// Do nothing.
	}

	@Override
	public void setMessageExpanded(MessageHeaderItem item, int newSpacerHeight) {
	// Do nothing.
	}

	@Override
	public void onConversationViewHeaderHeightChange(int newHeight) {
	// Do nothing.
	}

	@Override
	public void onUserVisibleHintChanged() {
	if (mActivity == null) {
	return;
	}
	final SubjectDisplayChanger sdc = mActivity.getSubjectDisplayChanger();
	if (sdc != null) {
	sdc.setSubject(mConversation.subject);
	}
	mConversationHeaderView.setSubject(mConversation.subject);
	this.mScrollView.scrollTo(0, 0);
	onConversationSeen();
	}

	@Override
	public void showExternalResources(final Message msg) {
	mWebView.getSettings().setBlockNetworkImage(false);
	}

	@Override
	public void showExternalResources(final String rawSenderAddress) {
	mWebView.getSettings().setBlockNetworkImage(false);
	}

	@Override
	protected void onMessageCursorLoadFinished(Loader<Cursor> loader, MessageCursor newCursor,
	MessageCursor oldCursor) {
	// ignore cursors that are still loading results
	if (newCursor == null \|\| !newCursor.isLoaded()) {
	LogUtils.i(LOG_TAG, "CONV RENDER: existing cursor is null, rendering from scratch");
	return;
	}
	if (mActivity == null \|\| mActivity.isFinishing()) {
	// Activity is finishing, just bail.
	return;
	}
	renderMessageBodies(newCursor, mEnableContentReadySignal);
	}

	/**
	* Populate the adapter with overlay views (message headers, super-collapsed
	* blocks, a conversation header), and return an HTML document with spacer
	* divs inserted for all overlays.
	*/
	private void renderMessageBodies(MessageCursor messageCursor,
	boolean enableContentReadySignal) {
	StringBuilder convHtml = new StringBuilder();
	String content;
	if (messageCursor.moveToFirst()) {
	content = messageCursor.getString(UIProvider.MESSAGE_BODY_HTML_COLUMN);
	if (TextUtils.isEmpty(content)) {
	content = messageCursor.getString(UIProvider.MESSAGE_BODY_TEXT_COLUMN);
	if (content != null) {
	content = Html.toHtml(new SpannedString(content));
	}
	}
	convHtml.append(content);
	mMessage = messageCursor.getMessage();
	mWebView.getSettings().setBlockNetworkImage(!mMessage.alwaysShowImages);
	mWebView.loadDataWithBaseURL(mBaseUri, convHtml.toString(), "text/html", "utf-8", null);
	ConversationViewAdapter mAdapter = new ConversationViewAdapter(mActivity, null, null,
	null, null, null, null, null, null);
	MessageHeaderItem item = mAdapter.newMessageHeaderItem(mMessage, true,
	mMessage.alwaysShowImages);
	mMessageHeaderView.initialize(mDateBuilder, this, mAddressCache);
	mMessageHeaderView.setExpandMode(MessageHeaderView.POPUP_MODE);
	mMessageHeaderView.bind(item, false);
	mMessageHeaderView.setMessageDetailsVisibility(View.VISIBLE);
	if (mMessage.hasAttachments) {
	mMessageFooterView.setVisibility(View.VISIBLE);
	mMessageFooterView.initialize(getLoaderManager(), getFragmentManager());
	mMessageFooterView.bind(item, false);
	}
	}
	}

	@Override
	public void onConversationUpdated(Conversation conv) {
	final ConversationViewHeader headerView = mConversationHeaderView;
	if (headerView != null) {
	headerView.onConversationUpdated(conv);
	}
	}

	@Override
	public void setMessageDetailsExpanded(MessageHeaderItem i, boolean expanded, int heightbefore) {
	// Do nothing.
	}
	}