msghdrviewoverlay.js

来自「现在很火的邮件客户端软件thunderbird的源码」· JavaScript 代码 · 共 1,653 行 · 第 1/5 页

    onEndHeaders: function() 
    {
      // WARNING: This is the ONLY routine inside of the message Header Sink that should 
      // trigger a reflow!
      CheckNotify();
      
      ClearHeaderView(gCollapsedHeaderView);
      ClearHeaderView(gExpandedHeaderView);

      EnsureSubjectValue(); // make sure there is a subject even if it's empty so we'll show the subject and the twisty
      
      ShowMessageHeaderPane();
      UpdateMessageHeaders();
      ShowEditMessageButton();
      
      for (index in gMessageListeners)
        gMessageListeners[index].onEndHeaders();
    },
    
    processHeaders: function(headerNameEnumerator, headerValueEnumerator, dontCollectAddress)
    {
      this.onStartHeaders(); 

      const kMailboxSeparator = ", ";
      var index = 0;
      while (headerNameEnumerator.hasMore()) 
      {
        var header = new Object;        
        header.headerValue = headerValueEnumerator.getNext();
        header.headerName = headerNameEnumerator.getNext();

        // for consistancy sake, let's force all header names to be lower case so
        // we don't have to worry about looking for: Cc and CC, etc.
        var lowerCaseHeaderName = header.headerName.toLowerCase();

        // if we have an x-mailer or x-mimeole string, put it in the user-agent slot which we know how to handle
        // already. 
        if (lowerCaseHeaderName == "x-mailer" || lowerCaseHeaderName == "x-mimeole")
          lowerCaseHeaderName = "user-agent";   

        if (this.mDummyMsgHeader)
        {
          if (lowerCaseHeaderName == "from")
            this.mDummyMsgHeader.author = header.headerValue;
          else if (lowerCaseHeaderName == "to")
            this.mDummyMsgHeader.recipients = header.headerValue;
          else if (lowerCaseHeaderName == "cc")
            this.mDummyMsgHeader.ccList = header.headerValue;
          else if (lowerCaseHeaderName == "subject")
            this.mDummyMsgHeader.subject = header.headerValue;
          else if (lowerCaseHeaderName == "reply-to")
            this.mDummyMsgHeader.replyTo = header.headerValue;
          else if (lowerCaseHeaderName == "message-id")
            this.mDummyMsgHeader.messageId = header.headerValue;

        }
        // according to RFC 2822, certain headers
        // can occur "unlimited" times
        if (lowerCaseHeaderName in currentHeaderData)
        {
          // sometimes, you can have multiple To or Cc lines....
          // in this case, we want to append these headers into one.
          if (lowerCaseHeaderName == 'to' || lowerCaseHeaderName == 'cc')
            currentHeaderData[lowerCaseHeaderName].headerValue = currentHeaderData[lowerCaseHeaderName].headerValue + ',' + header.headerValue;
          else {  
            // use the index to create a unique header name like:
            // received5, received6, etc
            currentHeaderData[lowerCaseHeaderName + index++] = header;
          }
        }
        else
         currentHeaderData[lowerCaseHeaderName] = header;
      } // while we have more headers to parse

      // process message tags as if they were headers in the message
      SetTagHeader();      

      if (("from" in currentHeaderData) && ("sender" in currentHeaderData) && msgHeaderParser)
      {
        var senderMailbox = kMailboxSeparator + msgHeaderParser.extractHeaderAddressMailboxes(null,
                            currentHeaderData.sender.headerValue) + kMailboxSeparator;
        var fromMailboxes = kMailboxSeparator + msgHeaderParser.extractHeaderAddressMailboxes(null,
                            currentHeaderData.from.headerValue) + kMailboxSeparator;
        if (fromMailboxes.indexOf(senderMailbox) >= 0)
          delete currentHeaderData.sender;
      }

      this.onEndHeaders();
    },

    handleAttachment: function(contentType, url, displayName, uri, isExternalAttachment) 
    {
      // presentation level change....don't show vcards as external attachments in the UI.
      // libmime already renders them inline.

      try
      {
        if (!this.mSaveHdr)
          this.mSaveHdr = messenger.messageServiceFromURI(uri).messageURIToMsgHdr(uri);
      }
      catch (ex) {}
      if (contentType == "text/x-vcard")
      {
        var inlineAttachments = pref.getBoolPref("mail.inline_attachments");
        var displayHtmlAs = pref.getIntPref("mailnews.display.html_as");
        if (inlineAttachments && !displayHtmlAs)
        {
          return;
        }
      }

      // display name optimization. Eliminate any large quantities of white space from the display name.
      // such that Hello       World.txt becomes Hello World.txt.
      var displayName = displayName.replace(/ +/g, " ");
          
      currentAttachments.push (new createNewAttachmentInfo(contentType, url, displayName, uri, isExternalAttachment));
      // if we have an attachment, set the MSG_FLAG_ATTACH flag on the hdr
      // this will cause the "message with attachment" icon to show up
      // in the thread pane
      // we only need to do this on the first attachment
      var numAttachments = currentAttachments.length;
      if (numAttachments == 1) {
        // we also have to enable the File/Attachments menuitem
        var node = document.getElementById("fileAttachmentMenu");
        if (node)
          node.removeAttribute("disabled");

        try {
          // convert the uri into a hdr
          this.mSaveHdr.markHasAttachments(true);
        }
        catch (ex) {
          dump("ex = " + ex + "\n");
        }
      }
    },
    
    onEndAllAttachments: function()
    {
      displayAttachmentsForExpandedView();
    },

    onEndMsgDownload: function(url)
    {
      // if we don't have any attachments, turn off the attachments flag
      if (!this.mSaveHdr)
      {
        var messageUrl = url.QueryInterface(Components.interfaces.nsIMsgMessageUrl);
        try
        {
          this.mSaveHdr = messenger.msgHdrFromURI(messageUrl.uri);
        }
        catch (ex) {}

      }
      if (!currentAttachments.length && this.mSaveHdr)
        this.mSaveHdr.markHasAttachments(false);
      OnMsgParsed(url);
    },

    onEndMsgHeaders: function(url)
    { 
      OnMsgLoaded(url);
    },

    onMsgHasRemoteContent: function(aMsgHdr)
    {
      gMessageNotificationBar.setRemoteContentMsg(aMsgHdr);
    },

    mSecurityInfo  : null,
    mSaveHdr: null,
    get securityInfo()
    {
      return this.mSecurityInfo;
    },
    set securityInfo(aSecurityInfo)
    {
      this.mSecurityInfo = aSecurityInfo;
    },

    mDummyMsgHeader: null,

    getDummyMsgHeader: function() 
    {
      if (!this.mDummyMsgHeader)
        this.mDummyMsgHeader = new nsDummyMsgHeader();
      return this.mDummyMsgHeader;
    },
    mProperties: null,
    get properties()
    {
      if (!this.mProperties)
        this.mProperties = Components.classes["@mozilla.org/hash-property-bag;1"].
          createInstance(Components.interfaces.nsIWritablePropertyBag2);
      return this.mProperties;
    }
};

function SetTagHeader()
{
  // it would be nice if we passed in the msgHdr from the back end
  var msgHdr;
  try
  {
    msgHdr = gDBView.hdrForFirstSelectedMessage;
  }
  catch (ex)
  {
    return; // no msgHdr to add our tags to
  }

  // get the list of known tags
  var tagService = Components.classes["@mozilla.org/messenger/tagservice;1"]
                   .getService(Components.interfaces.nsIMsgTagService);
  var tagArray = tagService.getAllTags({});
  var tagKeys = {};
  for each (var tagInfo in tagArray)
    if (tagInfo.tag)
      tagKeys[tagInfo.key] = true;

  // extract the tag keys from the msgHdr
  var msgKeyArray = msgHdr.getStringProperty("keywords").split(" ");

  // attach legacy label to the front if not already there
  var label = msgHdr.label;
  if (label)
  {
    var labelKey = "$label" + label;
    if (msgKeyArray.indexOf(labelKey) < 0)
      msgKeyArray.unshift(labelKey);
  }

 // Rebuild the keywords string with just the keys that are actual tags or
  // legacy labels and not other keywords like Junk and NonJunk.
  // Retain their order, though, with the label as oldest element.
  for (var i = msgKeyArray.length - 1; i >= 0; --i)
    if (!(msgKeyArray[i] in tagKeys))
      msgKeyArray.splice(i, 1); // remove non-tag key
  var msgKeys = msgKeyArray.join(" ");

  if (msgKeys)
    currentHeaderData.tags = {headerName: "tags", headerValue: msgKeys};
  else // no more tags, so clear out the header field
    delete currentHeaderData.tags;
}

function EnsureSubjectValue()
{
  if (!('subject' in currentHeaderData))
  {
    var foo = new Object;
    foo.headerValue = "";
    foo.headerName = 'subject';
    currentHeaderData[foo.headerName] = foo;
  } 
}

function CheckNotify()
{
  if ("NotifyClearAddresses" in this)
    NotifyClearAddresses();
}

function OnTagsChange()
{
  // rebuild the tag headers
  SetTagHeader();

  // now update the expanded header view to rebuild the tags,
  // and then show or hide the tag header box.  
  if (gBuiltExpandedView)
  {
    var headerEntry = gExpandedHeaderView.tags;
    if (headerEntry)
    {
      headerEntry.valid = ("tags" in currentHeaderData);
      if (headerEntry.valid)
        headerEntry.outputFunction(headerEntry, currentHeaderData.tags.headerValue);
      
      // if we are showing the expanded header view then we may need to collapse or
      // show the tag header box...
      if (!gCollapsedHeaderViewMode)
        headerEntry.enclosingBox.collapsed = !headerEntry.valid;
    }
  }
}

// flush out any local state being held by a header entry for a given
// table
function ClearHeaderView(headerTable)
{
  for (index in headerTable)
  {
     var headerEntry = headerTable[index];
     if (headerEntry.useToggle)
     {
       headerEntry.enclosingBox.clearEmailAddresses();    
     }

     headerEntry.valid = false;
  }
}

// make sure that any valid header entry in the table is collapsed
function hideHeaderView(headerTable)
{
  for (index in headerTable)
  {
    headerTable[index].enclosingBox.collapsed = true;
  }
}

// make sure that any valid header entry in the table specified is 
// visible
function showHeaderView(headerTable)
{
  var headerEntry;
  for (index in headerTable)
  {
    headerEntry = headerTable[index];
    if (headerEntry.valid)
    {
      headerEntry.enclosingBox.collapsed = false;
    }
    else // if the entry is invalid, always make sure it's collapsed
      headerEntry.enclosingBox.collapsed = true;
  }
}

// enumerate through the list of headers and find the number that are visible