addressingwidgetoverlay.js

来自「现在很火的邮件客户端软件thunderbird的源码」· JavaScript 代码 · 共 1,248 行 · 第 1/3 页

    awGetInputElement(row).value = "";
    awGetPopupElement(row).selectedIndex = 0;
  }
}

function awCleanupRows()
{
  var maxRecipients = top.MAX_RECIPIENTS;
  var rowID = 1;

  for (var row = 1; row <= maxRecipients; row ++)
  {
    var inputElem = awGetInputElement(row);
    if (inputElem.value == "" && row < maxRecipients)
      awRemoveRow(row, 1);
    else
    {
      inputElem.setAttribute("id", "addressCol2#" + rowID);
      awGetPopupElement(row).setAttribute("id", "addressCol1#" + rowID);
      rowID ++;
    }
  }

  awTestRowSequence();
}

function awDeleteRow(rowToDelete)
{
  /* When we delete a row, we must reset the id of others row in order to not break the sequence */
  var maxRecipients = top.MAX_RECIPIENTS;
  awRemoveRow(rowToDelete);

  var numberOfCols = awGetNumberOfCols();
  for (var row = rowToDelete + 1; row <= maxRecipients; row ++)
    for (var col = 1; col <= numberOfCols; col++)
      awGetElementByCol(row, col).setAttribute("id", "addressCol" + (col) + "#" + (row-1));

  awTestRowSequence();
}

function awClickEmptySpace(target, setFocus)
{
  if (target == null ||
      (target.localName != "listboxbody" &&
      target.localName != "listcell" &&
      target.localName != "listitem"))
    return;

  var lastInput = awGetInputElement(top.MAX_RECIPIENTS);

  if ( lastInput && lastInput.value )
    awAppendNewRow(setFocus);
  else
    if (setFocus)
      awSetFocus(top.MAX_RECIPIENTS, lastInput);
}

function awReturnHit(inputElement)
{
  var row = awGetRowByInputElement(inputElement);
  var nextInput = awGetInputElement(row+1);

  if ( !nextInput )
  {
    if ( inputElement.value )
      awAppendNewRow(true);
    else // No address entered, switch to Subject field
    {
      var subjectField = document.getElementById( 'msgSubject' );
      subjectField.select();
      subjectField.focus();
    }
  }
  else
  {
    nextInput.select();
    awSetFocus(row+1, nextInput);
  }

  // be sure to add the user add recipient to our ignore list
  // when the user hits enter in an autocomplete widget...
  addRecipientsToIgnoreList(inputElement.value);
}

function awDeleteHit(inputElement)
{
  var row = awGetRowByInputElement(inputElement);

  /* 1. don't delete the row if it's the last one remaining, just reset it! */
  if (top.MAX_RECIPIENTS <= 1)
  {
    inputElement.value = "";
    return;
  }

  /* 2. Set the focus to the previous field if possible */
  if (row > 1)
    awSetFocus(row - 1, awGetInputElement(row - 1))
  else
    awSetFocus(1, awGetInputElement(2))   /* We have to cheat a little bit because the focus will */
                                          /* be set asynchronusly after we delete the current row, */
                                          /* therefore the row number still the same! */

  /* 3. Delete the row */
  awDeleteRow(row);
}

function awInputChanged(inputElement)
{
  //Do we need to add a new row?
  var lastInput = awGetInputElement(top.MAX_RECIPIENTS);
  if ( lastInput && lastInput.value && !top.doNotCreateANewRow)
    awAppendNewRow(false);
  top.doNotCreateANewRow = false;
}

function awAppendNewRow(setFocus)
{
  var listbox = document.getElementById('addressingWidget');
  var listitem1 = awGetListItem(1);

  if ( listbox && listitem1 )
  {
    var lastRecipientType = awGetPopupElement(top.MAX_RECIPIENTS).selectedItem.getAttribute("value");

    var nextDummy = awGetNextDummyRow();
    var newNode = listitem1.cloneNode(true);
    if (nextDummy)
      listbox.replaceChild(newNode, nextDummy);
    else
      listbox.appendChild(newNode);

    top.MAX_RECIPIENTS++;

    var input = newNode.getElementsByTagName(awInputElementName());
    if ( input && input.length == 1 )
    {
      input[0].setAttribute("value", "");
      input[0].setAttribute("id", "addressCol2#" + top.MAX_RECIPIENTS);
    
      //this copies the autocomplete sessions list from recipient#1 
      input[0].syncSessions(document.getElementById('addressCol2#1'));

  	  // also clone the showCommentColumn setting
  	  //
  	  input[0].showCommentColumn = 
	      document.getElementById("addressCol2#1").showCommentColumn;

      // We always clone the first row.  The problem is that the first row
      // could be focused.  When we clone that row, we end up with a cloned
      // XUL textbox that has a focused attribute set.  Therefore we think
      // we're focused and don't properly refocus.  The best solution to this
      // would be to clone a template row that didn't really have any presentation,
      // rather than using the real visible first row of the listbox.
      //
      // For now we'll just put in a hack that ensures the focused attribute
      // is never copied when the node is cloned.
      if (input[0].getAttribute('focused') != '')
        input[0].removeAttribute('focused');
    }
    var select = newNode.getElementsByTagName(awSelectElementName());
    if ( select && select.length == 1 )
    {
      // It only makes sense to clone some field types; others 
      // should not be cloned, since it just makes the user have
      // to go to the trouble of selecting something else. In such
      // cases let's default to 'To' (a reasonable default since
      // we already default to 'To' on the first dummy field of
      // a new message).
      switch (lastRecipientType)
      {
        case  "addr_reply":
        case  "addr_other":
          select[0].selectedIndex = awGetSelectItemIndex("addr_to");
          break;       
        case "addr_followup":
          select[0].selectedIndex = awGetSelectItemIndex("addr_newsgroups");
          break;
        default:
        // e.g. "addr_to","addr_cc","addr_bcc","addr_newsgroups":
          select[0].selectedIndex = awGetSelectItemIndex(lastRecipientType);
      }
    
      select[0].setAttribute("id", "addressCol1#" + top.MAX_RECIPIENTS);
      if (input)
        _awSetAutoComplete(select[0], input[0]);
    }

    // focus on new input widget
    if (setFocus && input[0] )
      awSetFocus(top.MAX_RECIPIENTS, input[0]);
  }
}

// functions for accessing the elements in the addressing widget

function awGetPopupElement(row)
{
    return document.getElementById("addressCol1#" + row);
}

function awGetInputElement(row)
{
    return document.getElementById("addressCol2#" + row);
}

function awGetElementByCol(row, col)
{
  var colID = "addressCol" + col + "#" + row;
  return document.getElementById(colID);
}

function awGetListItem(row)
{
  var listbox = document.getElementById('addressingWidget');

  if ( listbox && row > 0)
  {
    var listitems = listbox.getElementsByTagName('listitem');
    if ( listitems && listitems.length >= row )
      return listitems[row-1];
  }
  return 0;
}

function awGetRowByInputElement(inputElement)
{
  var row = 0;
  if (inputElement) {
    var listitem = inputElement.parentNode.parentNode;
    while (listitem) {
      if (listitem.localName == "listitem")
        ++row;
      listitem = listitem.previousSibling;
    }
  }
  return row;
}


// Copy Node - copy this node and insert ahead of the (before) node.  Append to end if before=0
function awCopyNode(node, parentNode, beforeNode)
{
  var newNode = node.cloneNode(true);

  if ( beforeNode )
    parentNode.insertBefore(newNode, beforeNode);
  else
    parentNode.appendChild(newNode);

    return newNode;
}

// remove row

function awRemoveRow(row)
{
  var listbox = document.getElementById('addressingWidget');

  awRemoveNodeAndChildren(listbox, awGetListItem(row));
  awFitDummyRows();

  top.MAX_RECIPIENTS --;
}

function awRemoveNodeAndChildren(parent, nodeToRemove)
{
  nodeToRemove.parentNode.removeChild(nodeToRemove);
}

function awSetFocus(row, inputElement)
{
  top.awRow = row;
  top.awInputElement = inputElement;
  top.awFocusRetry = 0;
  setTimeout("_awSetFocus();", 0);
}

function _awSetFocus()
{
  var listbox = document.getElementById('addressingWidget');
  //try
  //{
    var theNewRow = awGetListItem(top.awRow);

    //Warning: firstVisibleRow is zero base but top.awRow is one base!
    var firstVisibleRow = listbox.getIndexOfFirstVisibleRow();
    var numOfVisibleRows = listbox.getNumberOfVisibleRows();

    //Do we need to scroll in order to see the selected row?
    if (top.awRow <= firstVisibleRow)
      listbox.scrollToIndex(top.awRow - 1);
    else
      if (top.awRow - 1 >= (firstVisibleRow + numOfVisibleRows))
        listbox.scrollToIndex(top.awRow - numOfVisibleRows);

    top.awInputElement.focus();
  /*}
  catch(ex)
  {
    top.awFocusRetry ++;
    if (top.awFocusRetry < 3)
    {
      dump("_awSetFocus failed, try it again...\n");
      setTimeout("_awSetFocus();", 0);
    }
    else
      dump("_awSetFocus failed, forget about it!\n");
  }*/
}

function awTabFromRecipient(element, event)
{
  //If we are the last element in the listbox, we don't want to create a new row.
  if (element == awGetInputElement(top.MAX_RECIPIENTS))
    top.doNotCreateANewRow = true;

  var row = awGetRowByInputElement(element);
  if (!event.shiftKey && row < top.MAX_RECIPIENTS) {
    var listBoxRow = row - 1; // listbox row indices are 0-based, ours are 1-based.
    var listBox = document.getElementById("addressingWidget");
    listBox.listBoxObject.ensureIndexIsVisible(listBoxRow + 1);
  }

  // be sure to add the user add recipient to our ignore list
  // when the user tabs out of an autocomplete line...
  addRecipientsToIgnoreList(element.value);
}

function awTabFromMenulist(element, event)
{
  var row = awGetRowByInputElement(element);
  if (event.shiftKey && row > 1) {
    var listBoxRow = row - 1; // listbox row indices are 0-based, ours are 1-based.
    var listBox = document.getElementById("addressingWidget");
    listBox.listBoxObject.ensureIndexIsVisible(listBoxRow - 1);
  }
}

function awGetNumberOfRecipients()
{
    return top.MAX_RECIPIENTS;
}

function DragOverAddressingWidget(event)
{
  var validFlavor = false;
  var dragSession = dragSession = gDragService.getCurrentSession();

  if (dragSession.isDataFlavorSupported("text/x-moz-address")) 
    validFlavor = true;

  if (validFlavor)
    dragSession.canDrop = true;
}

function DropOnAddressingWidget(event)
{
  var dragSession = gDragService.getCurrentSession();
  
  var trans = Components.classes["@mozilla.org/widget/transferable;1"].createInstance(Components.interfaces.nsITransferable);
  trans.addDataFlavor("text/x-moz-address");

  for ( var i = 0; i < dragSession.numDropItems; ++i )
  {
    dragSession.getData ( trans, i );
    var dataObj = new Object();
    var bestFlavor = new Object();
    var len = new Object();
    trans.getAnyTransferData ( bestFlavor, dataObj, len );
    if ( dataObj )  
      dataObj = dataObj.value.QueryInterface(Components.interfaces.nsISupportsString);
    if ( !dataObj ) 
      continue;

    // pull the address out of the data object
    var address = dataObj.data.substring(0, len.value);
    if (!address)
      continue;

    DropRecipient(event.target, address);
  }
}

function DropRecipient(target, recipient)
{
  // break down and add each address
  return parseAndAddAddresses(recipient, awGetPopupElement(top.MAX_RECIPIENTS).selectedItem.getAttribute("value"));
}

function _awSetAutoComplete(selectElem, inputElem)
{
  inputElem.disableAutocomplete = selectElem.value == 'addr_newsgroups' || selectElem.value == 'addr_followup' || selectElem.value == 'addr_other';
}

function awSetAutoComplete(rowNumber)
{
    var inputElem = awGetInputElement(rowNumber);
    var selectElem = awGetPopupElement(rowNumber);
    _awSetAutoComplete(selectElem, inputElem)
}

function awRecipientTextCommand(userAction, element)
{
  if (userAction == "typing" || userAction == "scrolling")
    awReturnHit(element);
}

// Called when an autocomplete session item is selected and the status of
// the session it was selected from is nsIAutoCompleteStatus::failureItems.
//
// As of this writing, the only way that can happen is when an LDAP 
// autocomplete session returns an error to be displayed to the user.
//
// There are hardcoded messages in here, but these are just fallbacks for
// when string bundles have already failed us.