// ==UserScript==
// @name Gmail Smart-Delete Button
// @author Paul Moriak - P.Moriak@gmail.com
// @namespace http://kuru4u.spymac.com/scripts/Gmail_Smart-Delete_Button.user.js
// @description Adds a 'Smart-Delete' button that enables/disables itself, depending on whether or not any items have been checked. It works with all applicable Gmail pages, labels & mail items.
// @include http*://*mail.google.com/*mail/*
// @date 2005-06-29
// @version 0.3.9.3
// @GM_version 0.3.3
// ------------------------------------------------------------------------
// Copyright (c) 2005, Paul Moriak
// Released under the GPL license
// http://www.gnu.org/copyleft/gpl.html
// ------------------------------------------------------------------------
// ------------------------------------------------------------------------
// Originally based on the Gmail+Delete+Button script by Anthony Lieuallen.
// ------------------------------------------------------------------------
// ==/UserScript==
(function()
{
window.deleteItem = function deleteItem(Delete_Button)
{
try{
//find the command box
var command_box=Delete_Button.parentNode.getElementsByTagName('select')[0];
command_box.onfocus();
if (Debug || Debug_Verbose) GM_log('Delete Button Clicked.');
//Get the index for 'Move to Trash' (MTT)...
var delete_index=-1;
for (var i=0; i<command_box.options.length; i++)
{
if ('tr'==command_box.options[i].value && !command_box.options[i].disabled )
{
delete_index=i;
break;
}
}
//Abort if 'MTT' is not an available command for the current page...
if (-1==delete_index) return;
//Select the command index for MTT and fire the change event...
command_box.selectedIndex=delete_index;
command_box.onchange();
}catch(e){
GM_log("[deleteItem]: " + e);
}
}
function getElement(id) {
try{
var el=window.document.getElementById(id);
if (el) return el;
return false;
}catch(e){
GM_log("[getElement]: " + e);
}
}
function createDOMButton(id) {
try{
var Delete_Button=window.document.createElement('button');
Delete_Button.setAttribute('disabled', 'true');
Delete_Button.setAttribute('class', 'ab');
Delete_Button.setAttribute('id', '_gd_Delete_Button'+id);
Delete_Button.setAttribute('onclick', 'deleteItem(this);');
Delete_Button.innerHTML='<b><font color="#808080">Delete</font></b>';
return Delete_Button;
}catch(e){
GM_log("[createDOMButton]: " + e);
}
}
function insertButton(insert_container, id) {
try{
if (!insert_container) return false;
if (getElement('_gd_Delete_Button'+id)) {
return false;
}
var Delete_Button=createDOMButton(id);
var Insert_Point = -1;
var spacer;
//Create a spacer object...
//spacer=insert_container.childNodes[1].cloneNode(false);
spacer=document.createTextNode(" ");
//spacer=insert_container.childNodes[insert_container.childNodes.length-4].cloneNode(false);
//Locate the 'select' dropdown...
for(index = 0; index < insert_container.childNodes.length; index++){
if (Debug_Verbose) GM_log("Child Node " + index + ": " + insert_container.childNodes[index].nodeName);
if (insert_container.childNodes[index].nodeName=="SELECT"){
Insert_Point=index + 1;
}
}
if (Insert_Point==-1) return false;
//Insert buttons & spacers...
//Set the insertion point immediately after the select dropdown...
insert_container.insertBefore(Delete_Button, insert_container.childNodes[Insert_Point]);
//Insert a preceding spacer...
insert_container.insertBefore(spacer, Delete_Button);
//Add an optional trailing spacer...
//insert_container.appendChild(spacer);
}catch(e){
GM_log("[insertButton]: " + e);
}
}
function placeDeleteButtons() {
try{
//Upper main menu...
var top_menu=getElement('tamu'); if (top_menu) insertButton(top_menu.parentNode, 0);
//Lower main menu...
var bot_menu=getElement('bamu'); if (bot_menu) insertButton(bot_menu.parentNode, 1);
//Upper mail-item menu...
var mtp_menu=getElement('ctamu'); if (mtp_menu) insertButton(mtp_menu.parentNode, 2);
//Lower mail-item menu...
var mbt_menu=getElement('cbamu'); if (mbt_menu) insertButton(mbt_menu.parentNode, 3);
}catch(e){
GM_log("[placeDeleteButtons]: " + e);
}
}
window.validateDeleteButtons = function validateDeleteButtons()
{
//Catch errors here as this gets called on the timer and may occur while the page is reloading...
try {
if (Debug_Verbose) GM_log('validateDeleteButtons called.');
if (document) {
// If neither top buttons are visible we need to force the re-creation of the buttons...
//if (!document.getElementById(_gd_Delete_Button0) && !document.getElementById(_gd_Delete_Button2))
if (!getElement('_gd_Delete_Button0') && !getElement('_gd_Delete_Button2')) {
placeDeleteButtons();
}
}
} catch(e) {
GM_log("[validateDeleteButtons]: " + e);
}
}
window.validateCheckBoxes = function validateCheckBoxes()
{
try{
if (Debug_Verbose) GM_log('Validating CheckBoxes...');
// We need to check whether we are in a mailitem or a page with checkboxes...
//Don't need to validate if it's a mailitem...
if (document.location.search.match(/view=cv/)){
if (Debug_Verbose) GM_log('Enabling Delete Button for Mail Item...');
disableDeleteButton(false);
// There is a small bug in gmail - if you enable shortcut keys and are in a mail item,
// pressing 'x' returns you to the parent (inbox or label) view and toggles the selection of the current item.
// This does not trigger any event, so the delete button will be forced out of sync with the item list.
// Putting the 'validateCheckBoxes' on a timer will overcome this, though I would have preferred an event...
}else{
//Otherwise, if there are any 'Checked' checkboxes, enable the 'Delete' button...
// Loop through all checkBox elements
// and enable/disable 'Delete' button if any/none are checked...
var CBCount = 0;
var CheckedCount = 0;
var inputs = document.getElementsByTagName("input");
// alert('There are ' + inputs .length + ' input controls.');
// Loop through all form elements (input tags)
for(index = 0; index < inputs.length; index++)
{
// ...if it's the type of checkbox we're looking for,
// toggle its checked status
if(inputs[index].type == 'checkbox')
{
CBCount = CBCount + 1;
if(inputs[index].checked == 1)
{
CheckedCount = CheckedCount +1;
}
}
}
// alert("There are " + CBCount + " checkboxes (" + CheckedCount + " Checked).");
if (CheckedCount > 0)
{
disableDeleteButton(false);
} else {
disableDeleteButton(true);
}
}
}catch(e){
GM_log("[validateCheckBoxes]: " + e);
}
}
function disableDeleteButton(disable)
{
try{
//var btnCount=0;
validateDeleteButtons();
for(index = 0; index < 4; index++)
{
if (getElement('_gd_Delete_Button' + index))
{
//btnCount = btnCount + 1;
if (disable) // Disable 'Delete' button...
{
//alert("Disabling 'Delete' Button...");
if (!getElement('_gd_Delete_Button' + index).disabled) {
getElement('_gd_Delete_Button' + index).disabled = true;
getElement('_gd_Delete_Button' + index).innerHTML='<b><font color="#808080">Delete</font></b>';
}
}
else // Enable 'Delete' button...
{
//alert("Enabling 'Delete' Button...");
if (getElement('_gd_Delete_Button' + index).disabled) {
getElement('_gd_Delete_Button' + index).disabled = false;
getElement('_gd_Delete_Button' + index).innerHTML='<b><font color="#800000">Delete</font></b>';
}
}
}
}
//if (btnCount == 0) placeDeleteButtons();
//document.all["_gd_Delete_Button" + index].disabled = false;
} catch(e) {
GM_log("[disableDeleteButton]: " + e);
}
}
window.ProcessKeyPressEvent = function ProcessKeyPressEvent(e)
{
try{
if (!e) var e = window.event;
var strTarget = e.target;
var Delete_Button;
if (Debug || Debug_Verbose) GM_log(strTarget +' KeyPress Event Trapped!');
//Let gmail's code run first...
var retval = routeEvent(e);
//First call out generic event handler to validate controls...
ProcessEvent(e);
if (Debug || Debug_Verbose) GM_log(e.target);
//GM_log("Target Type = '" + e.target.type + "'");
//Now, make sure we are focused on an applicable area...
if ((strTarget.type != "text") && (strTarget.type != "textarea") && (strTarget.type != "file")) {
//Trap for 'D' or 'd' keypress...
if ((e.which == 100) || (e.which == 68)){
//Find which upper Delete Button is visible...
Delete_Button = getElement('_gd_Delete_Button0');
if (!Delete_Button){
Delete_Button = getElement('_gd_Delete_Button2');
}
if (Delete_Button){
//Make sure its OK to delete...
if (!Delete_Button.disabled) {
//Call DeleteButton's click event...
if (Debug || Debug_Verbose) GM_log("Attempting to delete...");
Delete_Button.onclick();
}
}else{
if (Debug || Debug_Verbose) GM_log("No Delete Button found...");
}
}
}
if (retval == false) return false;
else return true;
} catch(e) {
GM_log("[ProcessKeyPressEvent]: " + e);
}
}
window.ProcessEvent = function ProcessEvent(e)
{
try{
if (!e) var e = window.event;
var strTarget = e.target;
if (Debug || Debug_Verbose) GM_log(strTarget +' Event Trapped!');
//Let gmail's code run first...
var retval = routeEvent(e);
//Wait for the page to redisplay then revalidate...
validateControls();
setTimeout("validateControls()", 500);
setTimeout("validateControls()", 2000);
setTimeout("validateControls()", 4000);
setTimeout("validateControls()", 8000);
setTimeout("validateControls()", 16000);
if (retval == false) return false;
else return true;
} catch(e) {
GM_log("[ProcessEvent]: " + e);
}
}
window.validateControls = function validateControls()
{
try {
//if (!Validating){
//Validating=true;
validateDeleteButtons();
validateCheckBoxes();
//Validating=false;
//}
} catch(e) {
GM_log("[validateControls]: " + e);
}
}
try{
if (document.location.search) {
var Debug=false;
var Debug_Verbose=false;
//var Validating=false;
if (Debug || Debug_Verbose) GM_log("Loading script...");
if (document.location.search.match(/search=trash/) //Trash...
|| document.location.search.match(/search=drafts/) //Drafts...
|| document.location.search.match(/search=spam/) //Spam...
|| document.location.search.match(/name=htmlcompose/) //Compose...
) {
// Kill the event handler...
window.releaseEvents(Event.KEYPRESS);
window.releaseEvents(Event.CLICK);
window.releaseEvents(Event.FOCUS);
window.releaseEvents(Event.BLUR);
} else {
// Set the event handler...
if (window.captureEvents) {
window.captureEvents(Event.KEYPRESS);
window.onkeypress=ProcessKeyPressEvent;
window.captureEvents(Event.CLICK);
window.onclick=ProcessEvent;
window.captureEvents(Event.FOCUS);
window.onfocus=ProcessEvent;
window.captureEvents(Event.BLUR);
window.onblur=ProcessEvent;
}
//If we are in a messageItem, (no checkboxes) just enable the 'Delete' button...
if (document.location.search.match(/view=cv/))
{
//alert('Enabling Delete Button for Mail Item...');
disableDeleteButton(false);
} else {
//Otherwise, if there are any 'Checked' checkboxes, enable the 'Delete' button...
validateControls();
}
}
}
} catch(e) {
GM_log("[Main]: " + e);
}
})();
