messagewindow.js

现在很火的邮件客户端软件thunderbird的源码

    viewType = nsMsgViewType.eShowSearch;
  }

  // create a db view
  CreateBareDBView(originalView, msgFolder, viewType, viewFlags, sortType, sortOrder); 

  var uri;
  if (gCurrentMessageUri)
    uri = gCurrentMessageUri;
  else if (gCurrentFolderUri)
    uri = gCurrentFolderUri;
  else
    uri = null;

  SetUpToolbarButtons(uri);

  // hook for extra toolbar items
  var observerService = Components.classes["@mozilla.org/observer-service;1"].getService(Components.interfaces.nsIObserverService);
  observerService.notifyObservers(window, "mail:setupToolbarItems", uri);
}

function extractMsgKeyFromURI()
{
  var msgKey = -1;
  var msgHdr =   messenger.msgHdrFromURI(gCurrentMessageUri);
  if (msgHdr)
    msgKey = msgHdr.messageKey;
  return msgKey;
}

function ShowMenus()
{
  var openMail3Pane_menuitem = document.getElementById('tasksMenuMail');
  if (openMail3Pane_menuitem)
    openMail3Pane_menuitem.removeAttribute("hidden");
}

// Toolbar buttons like quick search and mail views should be hidden for the message window
function HideToolbarButtons()
{
  var mailToolbar = document.getElementById('mail-bar2');
  if (mailToolbar)
  {
    // the quick search box is part of the default toolbar set for the 3-pane and since it is shared code,
    // the stand alone message window. We need to remove the search-container from the defaultset,
    // remove the toolbar button itself from the DOM because we've already created it.
    var defaultSet = mailToolbar.getAttribute("defaultset");
    defaultSet = defaultSet.replace(/search-container/i, "");
    mailToolbar.setAttribute('defaultset', defaultSet);
    
    var searchContainer = document.getElementById('search-container');
    if (searchContainer)
      searchContainer.parentNode.removeChild(searchContainer);
    
    // now hack the toolbar palette to remove all of the toolbar items which don't
    // make sense for the stand alone message window. This prevents them from showing up in the 
    // customize dialog.
    var toolbarPalette = document.getElementById('mail-toolbox').palette;
    toolbarPalette.removeChild(toolbarPalette.getElementsByAttribute('id', 'search-container')[0]);
    toolbarPalette.removeChild(toolbarPalette.getElementsByAttribute('id', 'mailviews-container')[0]);
    toolbarPalette.removeChild(toolbarPalette.getElementsByAttribute('id', 'folder-location-container')[0]);    
  }
}

function HideMenus()
{
	var message_menuitem=document.getElementById('menu_showMessage');
	if (message_menuitem)
		message_menuitem.setAttribute("hidden", "true");

	var showSearch_showMessage_Separator = document.getElementById('menu_showSearch_showMessage_Separator');
	if (showSearch_showMessage_Separator)
		showSearch_showMessage_Separator.setAttribute("hidden", "true");

	var expandOrCollapseMenu = document.getElementById('menu_expandOrCollapse');
	if (expandOrCollapseMenu)
		expandOrCollapseMenu.setAttribute("hidden", "true");

	var renameFolderMenu = document.getElementById('menu_renameFolder');
	if (renameFolderMenu)
		renameFolderMenu.setAttribute("hidden", "true");

  var viewLayoutMenu = document.getElementById("menu_MessagePaneLayout");
  if (viewLayoutMenu)
    viewLayoutMenu.setAttribute("hidden", "true");

  var viewFolderMenu = document.getElementById("menu_FolderViews");
  if (viewFolderMenu)
    viewFolderMenu.setAttribute("hidden", "true");

	var viewMessagesMenu = document.getElementById('viewMessagesMenu');
	if (viewMessagesMenu)
		viewMessagesMenu.setAttribute("hidden", "true");

	var viewMessageViewMenu = document.getElementById('viewMessageViewMenu');
	if (viewMessageViewMenu)
		viewMessageViewMenu.setAttribute("hidden", "true");

	var viewMessagesMenuSeparator = document.getElementById('viewMessagesMenuSeparator');
	if (viewMessagesMenuSeparator)
		viewMessagesMenuSeparator.setAttribute("hidden", "true");

	var openMessageMenu = document.getElementById('openMessageWindowMenuitem');
	if (openMessageMenu)
		openMessageMenu.setAttribute("hidden", "true");

  var viewSortMenuSeparator = document.getElementById('viewSortMenuSeparator');
  if (viewSortMenuSeparator)
    viewSortMenuSeparator.setAttribute("hidden", "true");

	var viewSortMenu = document.getElementById('viewSortMenu');
	if (viewSortMenu)
		viewSortMenu.setAttribute("hidden", "true");

	var emptryTrashMenu = document.getElementById('menu_emptyTrash');
	if (emptryTrashMenu)
		emptryTrashMenu.setAttribute("hidden", "true");

  var menuPropertiesSeparator = document.getElementById("editPropertiesSeparator");
  if (menuPropertiesSeparator)
    menuPropertiesSeparator.setAttribute("hidden", "true");

	var menuProperties = document.getElementById('menu_properties');
	if (menuProperties)
		menuProperties.setAttribute("hidden", "true");

  var favoriteFolder = document.getElementById('menu_favoriteFolder');
  if (favoriteFolder)
  {
    favoriteFolder.disabled = true;
    favoriteFolder.setAttribute("hidden", "true");
  }

	var compactFolderMenu = document.getElementById('menu_compactFolder');
	if (compactFolderMenu)
		compactFolderMenu.setAttribute("hidden", "true");

	var trashSeparator = document.getElementById('trashMenuSeparator');
	if (trashSeparator)
		trashSeparator.setAttribute("hidden", "true");

	var goStartPageSeparator = document.getElementById('goNextSeparator');
	if (goStartPageSeparator)
		goStartPageSeparator.hidden = true;

  var goStartPage = document.getElementById('goStartPage');
	if (goStartPage)
   goStartPage.hidden = true;
}

function OnUnloadMessageWindow()
{
	// FIX ME - later we will be able to use onunload from the overlay
	OnUnloadMsgHeaderPane();

	OnMailWindowUnload();
	
	gFindBar.uninitFindBar();
}

function CreateMessageWindowGlobals()
{
	gCompositeDataSource = Components.classes[compositeDataSourceContractID].createInstance();
	gCompositeDataSource = gCompositeDataSource.QueryInterface(Components.interfaces.nsIRDFCompositeDataSource);
}

function InitializeDataSources()
{
  AddDataSources();
  //Now add datasources to composite datasource
  gCompositeDataSource.AddDataSource(accountManagerDataSource);
  gCompositeDataSource.AddDataSource(folderDataSource);
}

function GetSelectedMsgFolders()
{
  var folderArray = new Array(1);
  var msgFolder = GetLoadedMsgFolder();
  if (msgFolder)
    folderArray[0] = msgFolder;	

  return folderArray;
}

function GetFirstSelectedMessage()
{
	return GetLoadedMessage();
}

function GetNumSelectedMessages()
{
	if (gCurrentMessageUri)
		return 1;
	else
		return 0;
}

function GetSelectedMessages()
{
	var messageArray = new Array(1);
	var message = GetLoadedMessage();
	if (message)
		messageArray[0] = message;	

	return messageArray;
}

function GetSelectedIndices(dbView)
{
  try {
    var indicesArray = {}; 
    var length = {};
    dbView.getIndicesForSelection(indicesArray,length);
    return indicesArray.value;
  }
  catch (ex) {
    dump("ex = " + ex + "\n");
    return null;
  }
}

function GetLoadedMsgFolder()
{
  return (gCurrentFolderUri)
    ? RDF.GetResource(gCurrentFolderUri).QueryInterface(Components.interfaces.nsIMsgFolder)
    : null;
}

function GetSelectedFolderURI()
{
  return gCurrentFolderUri;
}

function GetLoadedMessage()
{
  return gCurrentMessageUri;
}

//Clear everything related to the current message. called after load start page.
function ClearMessageSelection()
{
  gCurrentMessageUri = null;
  gCurrentFolderUri = null;
  UpdateMailToolbar("clear msg, std alone window");
}

function GetCompositeDataSource(command)
{
  return gCompositeDataSource;	
}

function SetNextMessageAfterDelete()
{
  gNextMessageViewIndexAfterDelete = gDBView.msgToSelectAfterDelete;
}

function SelectFolder(folderUri)
{
  if (folderUri == gCurrentFolderUri)
    return;

  var msgfolder = RDF.GetResource(folderUri).QueryInterface(Components.interfaces.nsIMsgFolder);
  if (!msgfolder || msgfolder.isServer)
    return;

  // close old folder view
  var dbview = GetDBView();  
  if (dbview)
    dbview.close(); 

  gCurrentFolderToRerootForStandAlone = folderUri;

  if (msgfolder.manyHeadersToDownload)
  {
    gRerootOnFolderLoadForStandAlone = true;
    try
    {
      msgfolder.startFolderLoading();
      msgfolder.updateFolder(msgWindow);
    }
    catch(ex)
    {
      dump("Error loading with many headers to download: " + ex + "\n");
    }
  }
  else
  {
    RerootFolderForStandAlone(folderUri);
    gRerootOnFolderLoadForStandAlone = false;
    msgfolder.startFolderLoading();

    //Need to do this after rerooting folder.  Otherwise possibility of receiving folder loaded
    //notification before folder has actually changed.
    msgfolder.updateFolder(msgWindow);
  }    
}

function RerootFolderForStandAlone(uri)
{
  gCurrentFolderUri = uri;

  // create new folder view
  CreateView(null);
  
  // now do the work to load the appropriate message
  if (gNextMessageAfterLoad) {
    var type = gNextMessageAfterLoad;
    gNextMessageAfterLoad = null;
    LoadMessageByNavigationType(type);
  }
  
  SetUpToolbarButtons(gCurrentFolderUri);
  
  UpdateMailToolbar("reroot folder in stand alone window");
  
  // hook for extra toolbar items
  var observerService = Components.classes["@mozilla.org/observer-service;1"].getService(Components.interfaces.nsIObserverService);
  observerService.notifyObservers(window, "mail:setupToolbarItems", uri);
} 

function GetMsgHdrFromUri(messageUri)
{
  return messenger.msgHdrFromURI(messageUri);
}

function SelectMessage(messageUri)
{
  var msgHdr = GetMsgHdrFromUri(messageUri);
  LoadMessageByMsgKey(msgHdr.messageKey);
}
 
function ReloadMessage()
{
  gDBView.reloadMessage();
}

function MsgDeleteMessageFromMessageWindow(reallyDelete, fromToolbar)
{
  // if from the toolbar, return right away if this is a news message
  // only allow cancel from the menu:  "Edit | Cancel / Delete Message"
  if (fromToolbar)
  {
    if (isNewsURI(gCurrentFolderUri)) 
    {
        // if news, don't delete
        return;
    }
  }
  
  // before we delete 
  SetNextMessageAfterDelete();

  if (reallyDelete)
      gDBView.doCommand(nsMsgViewCommandType.deleteNoTrash);
  else
      gDBView.doCommand(nsMsgViewCommandType.deleteMsg);
}

// MessageWindowController object (handles commands when one of the trees does not have focus)
var MessageWindowController =
{
   supportsCommand: function(command)
  {
    switch ( command )
    {
      case "cmd_delete":
      case "cmd_undo":
      case "cmd_redo":
      case "cmd_killThread":
      case "cmd_watchThread":
      case "button_delete":
      case "button_junk":
      case "cmd_shiftDelete":
      case "cmd_saveAsFile":
      case "cmd_saveAsTemplate":
      case "cmd_viewPageSource":
      case "cmd_getMsgsForAuthAccounts":
      case "cmd_tag":
      case "button_mark":
      case "cmd_markAsRead":
      case "cmd_markAllRead":
      case "cmd_markThreadAsRead":
      case "cmd_markReadByDate":
      case "cmd_markAsFlagged":
      case "button_file":
      case "cmd_file":
      case "cmd_markAsJunk":
      case "cmd_markAsNotJunk":
      case "cmd_recalculateJunkScore":
      case "cmd_applyFilters":
      case "cmd_runJunkControls":
      case "cmd_deleteJunk":
      case "cmd_nextMsg":
      case "button_next":
      case "button_previous":
      case "cmd_nextUnreadMsg":
      case "cmd_nextFlaggedMsg":