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/*
* Copyright (C) 2013 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.app.Fragment;
import android.app.FragmentManager;
import android.content.res.Resources;
import android.graphics.Rect;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebSettings;
import com.android.mail.FormattedDateBuilder;
import com.android.mail.R;
import com.android.mail.browse.ConversationMessage;
import com.android.mail.browse.ConversationViewAdapter;
import com.android.mail.browse.ConversationViewAdapter.MessageHeaderItem;
import com.android.mail.browse.ConversationViewHeader;
import com.android.mail.browse.InlineAttachmentViewIntentBuilderCreator;
import com.android.mail.browse.InlineAttachmentViewIntentBuilderCreatorHolder;
import com.android.mail.browse.MessageFooterView;
import com.android.mail.browse.MessageHeaderView;
import com.android.mail.browse.MessageScrollView;
import com.android.mail.browse.MessageWebView;
import com.android.mail.browse.ScrollNotifier.ScrollListener;
import com.android.mail.browse.WebViewContextMenu;
import com.android.mail.print.PrintUtils;
import com.android.mail.providers.Conversation;
import com.android.mail.providers.Message;
import com.android.mail.utils.ConversationViewUtils;
/**
* Controller to do most of the heavy lifting for
* {@link SecureConversationViewFragment} and
* {@link com.android.mail.browse.EmlMessageViewFragment}. Currently that work
* is pretty much the rendering logic.
*/
public class SecureConversationViewController implements
MessageHeaderView.MessageHeaderViewCallbacks, ScrollListener,
MessageFooterView.MessageFooterCallbacks {
private static final String BEGIN_HTML =
"<body style=\"margin: 0 %spx;\"><div style=\"margin: 16px 0; font-size: 80%%\">";
private static final String END_HTML = "</div></body>";
private final SecureConversationViewControllerCallbacks mCallbacks;
private MessageWebView mWebView;
private ConversationViewHeader mConversationHeaderView;
private MessageHeaderView mMessageHeaderView;
private MessageHeaderView mSnapHeaderView;
private MessageFooterView mMessageFooterView;
private ConversationMessage mMessage;
private MessageScrollView mScrollView;
private ConversationViewProgressController mProgressController;
private FormattedDateBuilder mDateBuilder;
private int mSideMarginInWebPx;
public SecureConversationViewController(SecureConversationViewControllerCallbacks callbacks) {
mCallbacks = callbacks;
}
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.secure_conversation_view, container, false);
mScrollView = (MessageScrollView) rootView.findViewById(R.id.scroll_view);
mConversationHeaderView = (ConversationViewHeader) rootView.findViewById(R.id.conv_header);
mMessageHeaderView = (MessageHeaderView) rootView.findViewById(R.id.message_header);
mSnapHeaderView = (MessageHeaderView) rootView.findViewById(R.id.snap_header);
mMessageFooterView = (MessageFooterView) rootView.findViewById(R.id.message_footer);
mScrollView.addScrollListener(this);
// Add color backgrounds to the header and footer.
// Otherwise the backgrounds are grey. They can't
// be set in xml because that would add more overdraw
// in ConversationViewFragment.
final int color = rootView.getResources().getColor(
R.color.message_header_background_color);
mMessageHeaderView.setBackgroundColor(color);
mSnapHeaderView.setBackgroundColor(color);
mMessageFooterView.setBackgroundColor(color);
mProgressController = new ConversationViewProgressController(
mCallbacks.getFragment(), mCallbacks.getHandler());
mProgressController.instantiateProgressIndicators(rootView);
mWebView = (MessageWebView) rootView.findViewById(R.id.webview);
mWebView.setOverScrollMode(View.OVER_SCROLL_NEVER);
mWebView.setWebViewClient(mCallbacks.getWebViewClient());
final InlineAttachmentViewIntentBuilderCreator creator =
InlineAttachmentViewIntentBuilderCreatorHolder.
getInlineAttachmentViewIntentCreator();
mWebView.setOnCreateContextMenuListener(new WebViewContextMenu(
mCallbacks.getFragment().getActivity(),
creator.createInlineAttachmentViewIntentBuilder(null, -1)));
mWebView.setFocusable(false);
final WebSettings settings = mWebView.getSettings();
settings.setJavaScriptEnabled(false);
settings.setLayoutAlgorithm(WebSettings.LayoutAlgorithm.NORMAL);
ConversationViewUtils.setTextZoom(mCallbacks.getFragment().getResources(), settings);
settings.setSupportZoom(true);
settings.setBuiltInZoomControls(true);
settings.setDisplayZoomControls(false);
mScrollView.setInnerScrollableView(mWebView);
return rootView;
}
public void onActivityCreated(Bundle savedInstanceState) {
mCallbacks.setupConversationHeaderView(mConversationHeaderView);
final Fragment fragment = mCallbacks.getFragment();
mDateBuilder = new FormattedDateBuilder(fragment.getActivity());
mMessageHeaderView.initialize(
mCallbacks.getConversationAccountController(), mCallbacks.getAddressCache());
mMessageHeaderView.setContactInfoSource(mCallbacks.getContactInfoSource());
mMessageHeaderView.setCallbacks(this);
mMessageHeaderView.setExpandable(false);
mMessageHeaderView.setViewOnlyMode(mCallbacks.isViewOnlyMode());
mSnapHeaderView.setSnappy();
mSnapHeaderView.initialize(
mCallbacks.getConversationAccountController(), mCallbacks.getAddressCache());
mSnapHeaderView.setContactInfoSource(mCallbacks.getContactInfoSource());
mSnapHeaderView.setCallbacks(this);
mSnapHeaderView.setExpandable(false);
mSnapHeaderView.setViewOnlyMode(mCallbacks.isViewOnlyMode());
mCallbacks.setupMessageHeaderVeiledMatcher(mMessageHeaderView);
mCallbacks.setupMessageHeaderVeiledMatcher(mSnapHeaderView);
mMessageFooterView.initialize(fragment.getLoaderManager(), fragment.getFragmentManager(),
mCallbacks.getConversationAccountController(), this);
mCallbacks.startMessageLoader();
mProgressController.showLoadingStatus(mCallbacks.isViewVisibleToUser());
final Resources r = mCallbacks.getFragment().getResources();
mSideMarginInWebPx = (int) (r.getDimensionPixelOffset(
R.dimen.conversation_message_content_margin_side) / r.getDisplayMetrics().density);
}
@Override
public void onNotifierScroll(final int y) {
// We need to decide whether or not to display the snap header.
// Get the location of the moveable message header inside the scroll view.
Rect rect = new Rect();
mScrollView.offsetDescendantRectToMyCoords(mMessageHeaderView, rect);
// If we have scrolled further than the distance from the top of the scrollView to the top
// of the message header, then the message header is at least partially ofscreen. As soon
// as the message header goes partially offscreen we need to display the snap header.
// TODO - re-enable when dogfooders howl
// if (y > rect.top) {
// mSnapHeaderView.setVisibility(View.VISIBLE);
// } else {
mSnapHeaderView.setVisibility(View.GONE);
// }
}
/**
* 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.
*/
public void renderMessage(ConversationMessage message) {
mMessage = message;
final boolean alwaysShowImages = mCallbacks.shouldAlwaysShowImages();
mWebView.getSettings().setBlockNetworkImage(
!alwaysShowImages && !mMessage.alwaysShowImages);
// Add formatting to message body
// At this point, only adds margins.
StringBuilder dataBuilder = new StringBuilder(
String.format(BEGIN_HTML, mSideMarginInWebPx));
dataBuilder.append(mMessage.getBodyAsHtml());
dataBuilder.append(END_HTML);
mWebView.loadDataWithBaseURL(mCallbacks.getBaseUri(), dataBuilder.toString(),
"text/html", "utf-8", null);
final MessageHeaderItem item = ConversationViewAdapter.newMessageHeaderItem(
null, mDateBuilder, mMessage, true, mMessage.alwaysShowImages);
// Clear out the old info from the header before (re)binding
mMessageHeaderView.unbind();
mMessageHeaderView.bind(item, false);
mSnapHeaderView.unbind();
mSnapHeaderView.bind(item, false);
if (mMessage.hasAttachments) {
mMessageFooterView.setVisibility(View.VISIBLE);
mMessageFooterView.bind(item, false);
}
}
public ConversationMessage getMessage() {
return mMessage;
}
public ConversationViewHeader getConversationHeaderView() {
return mConversationHeaderView;
}
public void dismissLoadingStatus() {
mProgressController.dismissLoadingStatus();
}
public void setSubject(String subject) {
mConversationHeaderView.setSubject(subject);
}
public void printMessage() {
final Conversation conversation = mMessage.getConversation();
PrintUtils.printMessage(mCallbacks.getFragment().getActivity(), mMessage,
conversation != null ? conversation.subject : mMessage.subject,
mCallbacks.getAddressCache(), mCallbacks.getBaseUri(), false /* useJavascript */);
}
// Start MessageHeaderViewCallbacks implementations
@Override
public void setMessageSpacerHeight(MessageHeaderItem item, int newSpacerHeight) {
// Do nothing.
}
@Override
public void setMessageExpanded(MessageHeaderItem item, int newSpacerHeight) {
// Do nothing.
}
@Override
public void setMessageDetailsExpanded(MessageHeaderItem i, boolean expanded, int heightBefore) {
// Do nothing.
}
@Override
public void showExternalResources(final Message msg) {
mWebView.getSettings().setBlockNetworkImage(false);
}
@Override
public void showExternalResources(final String rawSenderAddress) {
mWebView.getSettings().setBlockNetworkImage(false);
}
@Override
public boolean supportsMessageTransforms() {
return false;
}
@Override
public String getMessageTransforms(final Message msg) {
return null;
}
@Override
public boolean isSecure() {
return true;
}
@Override
public FragmentManager getFragmentManager() {
return mCallbacks.getFragment().getFragmentManager();
}
// End MessageHeaderViewCallbacks implementations
}
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