src/com/android/mail/ui/SecureConversationViewController.java - platform/packages/apps/UnifiedEmail - Git at Google

 /*
  * 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.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.BorderView;
 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.MessageFooterView;
 import com.android.mail.browse.MessageHeaderView;
 import com.android.mail.browse.MessageScrollView;
 import com.android.mail.browse.MessageWebView;
 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 {
     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 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);
         mMessageFooterView = (MessageFooterView) rootView.findViewById(R.id.message_footer);

         // 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);
         mMessageFooterView.setBackgroundColor(color);

         ((BorderView) rootView.findViewById(R.id.top_border)).disableCardBottomBorder();
         ((BorderView) rootView.findViewById(R.id.bottom_border)).disableCardTopBorder();

         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());
         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.setExpandMode(MessageHeaderView.POPUP_MODE);
         mMessageHeaderView.setContactInfoSource(mCallbacks.getContactInfoSource());
         mMessageHeaderView.setCallbacks(this);
         mMessageHeaderView.setExpandable(false);
         mMessageHeaderView.setViewOnlyMode(mCallbacks.isViewOnlyMode());

         mCallbacks.setupMessageHeaderVeiledMatcher(mMessageHeaderView);

         mMessageFooterView.initialize(fragment.getLoaderManager(), fragment.getFragmentManager());

         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);
     }

     /**
      * 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;

         mWebView.getSettings().setBlockNetworkImage(!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);
         if (mMessage.hasAttachments) {
             mMessageFooterView.setVisibility(View.VISIBLE);
             mMessageFooterView.bind(item, mCallbacks.getAccountUri(), 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 printConversation() {
         // TODO - implement this
     }

     // Start MessageHeaderViewCallbacks implementations

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

     @Override
     public void setMessageExpanded(MessageHeaderItem item, int newSpacerHeight,
             int topBorderHeight, int bottomBorderHeight) {
         // 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 FragmentManager getFragmentManager() {
         return mCallbacks.getFragment().getFragmentManager();
     }

     // End MessageHeaderViewCallbacks implementations
 }
	/*
	* 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.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.BorderView;
	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.MessageFooterView;
	import com.android.mail.browse.MessageHeaderView;
	import com.android.mail.browse.MessageScrollView;
	import com.android.mail.browse.MessageWebView;
	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 {
	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 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);
	mMessageFooterView = (MessageFooterView) rootView.findViewById(R.id.message_footer);

	// 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);
	mMessageFooterView.setBackgroundColor(color);

	((BorderView) rootView.findViewById(R.id.top_border)).disableCardBottomBorder();
	((BorderView) rootView.findViewById(R.id.bottom_border)).disableCardTopBorder();

	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());
	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.setExpandMode(MessageHeaderView.POPUP_MODE);
	mMessageHeaderView.setContactInfoSource(mCallbacks.getContactInfoSource());
	mMessageHeaderView.setCallbacks(this);
	mMessageHeaderView.setExpandable(false);
	mMessageHeaderView.setViewOnlyMode(mCallbacks.isViewOnlyMode());

	mCallbacks.setupMessageHeaderVeiledMatcher(mMessageHeaderView);

	mMessageFooterView.initialize(fragment.getLoaderManager(), fragment.getFragmentManager());

	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);
	}

	/**
	* 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;

	mWebView.getSettings().setBlockNetworkImage(!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);
	if (mMessage.hasAttachments) {
	mMessageFooterView.setVisibility(View.VISIBLE);
	mMessageFooterView.bind(item, mCallbacks.getAccountUri(), 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 printConversation() {
	// TODO - implement this
	}

	// Start MessageHeaderViewCallbacks implementations

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

	@Override
	public void setMessageExpanded(MessageHeaderItem item, int newSpacerHeight,
	int topBorderHeight, int bottomBorderHeight) {
	// 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 FragmentManager getFragmentManager() {
	return mCallbacks.getFragment().getFragmentManager();
	}

	// End MessageHeaderViewCallbacks implementations
	}