SecureConversationViewController.java revision 90eccf969d691abb34f9c6f3d854091adb0c18d1 
1/*
2 * Copyright (C) 2013 Google Inc.
3 * Licensed to The Android Open Source Project.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 *      http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18package com.android.mail.ui;
19
20import android.app.Fragment;
21import android.app.FragmentManager;
22import android.content.res.Resources;
23import android.os.Bundle;
24import android.view.LayoutInflater;
25import android.view.View;
26import android.view.ViewGroup;
27import android.webkit.WebSettings;
28
29import com.android.mail.FormattedDateBuilder;
30import com.android.mail.R;
31import com.android.mail.browse.BorderView;
32import com.android.mail.browse.ConversationMessage;
33import com.android.mail.browse.ConversationViewAdapter;
34import com.android.mail.browse.ConversationViewAdapter.MessageHeaderItem;
35import com.android.mail.browse.ConversationViewHeader;
36import com.android.mail.browse.MessageFooterView;
37import com.android.mail.browse.MessageHeaderView;
38import com.android.mail.browse.MessageScrollView;
39import com.android.mail.browse.MessageWebView;
40import com.android.mail.providers.Message;
41import com.android.mail.utils.ConversationViewUtils;
42
43/**
44 * Controller to do most of the heavy lifting for {@link SecureConversationViewFragment}
45 * and {@link com.android.mail.browse.EmlMessageViewFragment}. Currently that work is
46 * pretty much the rendering logic.
47 */
48public class SecureConversationViewController implements
49        MessageHeaderView.MessageHeaderViewCallbacks {
50    private static final String BEGIN_HTML =
51            "<body style=\"margin: 0 %spx;\"><div style=\"margin: 16px 0; font-size: 80%%\">";
52    private static final String END_HTML = "</div></body>";
53
54    private final SecureConversationViewControllerCallbacks mCallbacks;
55
56    private MessageWebView mWebView;
57    private ConversationViewHeader mConversationHeaderView;
58    private MessageHeaderView mMessageHeaderView;
59    private MessageFooterView mMessageFooterView;
60    private ConversationMessage mMessage;
61    private MessageScrollView mScrollView;
62
63    private ConversationViewProgressController mProgressController;
64    private FormattedDateBuilder mDateBuilder;
65
66    private int mSideMarginInWebPx;
67
68    public SecureConversationViewController(SecureConversationViewControllerCallbacks callbacks) {
69        mCallbacks = callbacks;
70    }
71
72    public View onCreateView(LayoutInflater inflater, ViewGroup container,
73            Bundle savedInstanceState) {
74        View rootView = inflater.inflate(R.layout.secure_conversation_view, container, false);
75        mScrollView = (MessageScrollView) rootView.findViewById(R.id.scroll_view);
76        mConversationHeaderView = (ConversationViewHeader) rootView.findViewById(R.id.conv_header);
77        mMessageHeaderView = (MessageHeaderView) rootView.findViewById(R.id.message_header);
78        mMessageFooterView = (MessageFooterView) rootView.findViewById(R.id.message_footer);
79
80        // Add color backgrounds to the header and footer.
81        // Otherwise the backgrounds are grey. They can't
82        // be set in xml because that would add more overdraw
83        // in ConversationViewFragment.
84        final int color = rootView.getResources().getColor(
85                R.color.message_header_background_color);
86        mMessageHeaderView.setBackgroundColor(color);
87        mMessageFooterView.setBackgroundColor(color);
88
89        ((BorderView) rootView.findViewById(R.id.top_border)).disableCardBottomBorder();
90        ((BorderView) rootView.findViewById(R.id.bottom_border)).disableCardTopBorder();
91
92        mProgressController = new ConversationViewProgressController(
93                mCallbacks.getFragment(), mCallbacks.getHandler());
94        mProgressController.instantiateProgressIndicators(rootView);
95        mWebView = (MessageWebView) rootView.findViewById(R.id.webview);
96        mWebView.setWebViewClient(mCallbacks.getWebViewClient());
97        mWebView.setFocusable(false);
98        final WebSettings settings = mWebView.getSettings();
99
100        settings.setJavaScriptEnabled(false);
101        settings.setLayoutAlgorithm(WebSettings.LayoutAlgorithm.NORMAL);
102
103        ConversationViewUtils.setTextZoom(mCallbacks.getFragment().getResources(), settings);
104
105        settings.setSupportZoom(true);
106        settings.setBuiltInZoomControls(true);
107        settings.setDisplayZoomControls(false);
108
109        mScrollView.setInnerScrollableView(mWebView);
110
111        return rootView;
112    }
113
114    public void onActivityCreated(Bundle savedInstanceState) {
115        mCallbacks.setupConversationHeaderView(mConversationHeaderView);
116
117        final Fragment fragment = mCallbacks.getFragment();
118
119        mDateBuilder = new FormattedDateBuilder(fragment.getActivity());
120        mMessageHeaderView.initialize(
121                mCallbacks.getConversationAccountController(), mCallbacks.getAddressCache());
122        mMessageHeaderView.setExpandMode(MessageHeaderView.POPUP_MODE);
123        mMessageHeaderView.setContactInfoSource(mCallbacks.getContactInfoSource());
124        mMessageHeaderView.setCallbacks(this);
125        mMessageHeaderView.setExpandable(false);
126        mMessageHeaderView.setViewOnlyMode(mCallbacks.isViewOnlyMode());
127
128        mCallbacks.setupMessageHeaderVeiledMatcher(mMessageHeaderView);
129
130        mMessageFooterView.initialize(fragment.getLoaderManager(), fragment.getFragmentManager());
131
132        mCallbacks.startMessageLoader();
133
134        mProgressController.showLoadingStatus(mCallbacks.isViewVisibleToUser());
135
136        final Resources r = mCallbacks.getFragment().getResources();
137        mSideMarginInWebPx = (int) (r.getDimensionPixelOffset(
138                R.dimen.conversation_message_content_margin_side) / r.getDisplayMetrics().density);
139    }
140
141    /**
142     * Populate the adapter with overlay views (message headers, super-collapsed
143     * blocks, a conversation header), and return an HTML document with spacer
144     * divs inserted for all overlays.
145     */
146    public void renderMessage(ConversationMessage message) {
147        mMessage = message;
148
149        mWebView.getSettings().setBlockNetworkImage(!mMessage.alwaysShowImages);
150
151        // Add formatting to message body
152        // At this point, only adds margins.
153        StringBuilder dataBuilder = new StringBuilder(
154                String.format(BEGIN_HTML, mSideMarginInWebPx));
155        dataBuilder.append(mMessage.getBodyAsHtml());
156        dataBuilder.append(END_HTML);
157
158        mWebView.loadDataWithBaseURL(mCallbacks.getBaseUri(), dataBuilder.toString(),
159                "text/html", "utf-8", null);
160        final MessageHeaderItem item = ConversationViewAdapter.newMessageHeaderItem(
161                null, mDateBuilder, mMessage, true, mMessage.alwaysShowImages);
162        mMessageHeaderView.bind(item, false);
163        if (mMessage.hasAttachments) {
164            mMessageFooterView.setVisibility(View.VISIBLE);
165            mMessageFooterView.bind(item, mCallbacks.getAccountUri(), false);
166        }
167    }
168
169    public ConversationMessage getMessage() {
170        return mMessage;
171    }
172
173    public ConversationViewHeader getConversationHeaderView() {
174        return mConversationHeaderView;
175    }
176
177    public void dismissLoadingStatus() {
178        mProgressController.dismissLoadingStatus();
179    }
180
181    public void setSubject(String subject) {
182        mConversationHeaderView.setSubject(subject);
183    }
184
185    // Start MessageHeaderViewCallbacks implementations
186
187    @Override
188    public void setMessageSpacerHeight(MessageHeaderItem item, int newSpacerHeight) {
189        // Do nothing.
190    }
191
192    @Override
193    public void setMessageExpanded(MessageHeaderItem item, int newSpacerHeight,
194            int topBorderHeight, int bottomBorderHeight) {
195        // Do nothing.
196    }
197
198    @Override
199    public void setMessageDetailsExpanded(MessageHeaderItem i, boolean expanded, int heightBefore) {
200        // Do nothing.
201    }
202
203    @Override
204    public void showExternalResources(final Message msg) {
205        mWebView.getSettings().setBlockNetworkImage(false);
206    }
207
208    @Override
209    public void showExternalResources(final String rawSenderAddress) {
210        mWebView.getSettings().setBlockNetworkImage(false);
211    }
212
213    @Override
214    public boolean supportsMessageTransforms() {
215        return false;
216    }
217
218    @Override
219    public String getMessageTransforms(final Message msg) {
220        return null;
221    }
222
223    @Override
224    public FragmentManager getFragmentManager() {
225        return mCallbacks.getFragment().getFragmentManager();
226    }
227
228    // End MessageHeaderViewCallbacks implementations
229}
230