There are 2 previous versions of this script.
// Copyright (c) 2010, Deathalicious
// Released under the BSD license:
// http://www.opensource.org/licenses/bsd-license.php
//
// ==UserScript==
// @name Gmail Dynamic Signatures
// @namespace http://www.metafilter.com/user/25038
// @description Allows you to enter custom signatures for each From: address
// @include http://mail.google.com/*
// @include https://mail.google.com/*
// @require https://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.js
// ==/UserScript==
window.addEventListener('load', function() {
var gmail_addresses_setting=GM_getValue('gmail_addresses'),
default_signature_setting=GM_getValue('default_signature'),
matching_signatures_setting=GM_getValue('matching_signatures'),
gmail_addresses=gmail_addresses_setting ? eval(gmail_addresses_setting) : [],
default_signature=default_signature_setting ? eval(default_signature_setting) : null,
matching_signatures=matching_signatures_setting ? eval(matching_signatures_setting) : [],
saveSettings = function () {
GM_setValue('gmail_addresses',uneval(gmail_addresses));
GM_setValue('default_signature',uneval(default_signature));
GM_setValue('matching_signatures',uneval(matching_signatures));
};
if (unsafeWindow.gmonkey) {
unsafeWindow.gmonkey.load('1.0', function(gmail) {
var active_view_element,
mailBodyElem,
selected_address=-1,
address_holder=null,
address_select=null,
setMatchingSig = function(address,sig) {
var sig_to_set = -1,
i = 0;
if (address.indexOf('@') === -1) {
throw "The address given wasn't a valid e-mail address.";
}
for (i=0; i < gmail_addresses.length; i++) {
if (gmail_addresses[i]===address) {
sig_to_set=i;
}
}
for (i=(matching_signatures.length); i < sig_to_set; i++) {
matching_signatures[i]='';
}
matching_signatures[sig_to_set]=sig;
},
getMatchingSig = function(selected_address) {
var sig_to_use = -1,
i = 0,
sig = '';
for (i=0; i < gmail_addresses.length; i++) {
if (gmail_addresses[i]===selected_address && i <= matching_signatures.length) {
sig_to_use=i;
}
}
if (sig_to_use===-1) {
sig=default_signature;
} else {
sig=matching_signatures[sig_to_use];
}
return sig;
},
updateSettings = function (e) {
var address=$(this).find("select").val(),
addresses=$(this).find("select")[0].options,
sig=$(this).find("textarea").val(),
matching_address=-1,
i = 0;
for (i=0; i < addresses.length; i++) {
if (addresses[i].value.indexOf('@') !== -1) {
gmail_addresses[i]=addresses[i].value;
}
}
if (address=='(default)') {
default_signature=sig;
} else {
for (i=0; i < gmail_addresses.length; i++) {
if (gmail_addresses[i]==address) {
matching_address=i;
}
}
if (matching_address===-1) {
matching_address=gmail_addresses.length;
gmail_addresses[matching_address]=address;
}
setMatchingSig(address,sig);
}
saveSettings();
$(this).hide().empty();
e.stopPropagation();
return false;
},
$settings_element=$("<form method='post'>").submit(updateSettings),
showSettings = function (e) {
var i = 0,
$fieldset=$("<fieldset>").append($("<legend>").html("Custom signature")).appendTo($settings_element),
$select=$("<select name='setting_address'>").val(" Update Signature ").appendTo($fieldset).change(function (e) {
var entry=null,
selected_idx=this.selectedIndex,
selected_value=this.options[selected_idx].value,
$sig_field=$(this).parent().find("textarea");
if (selected_value==='(new)') {
entry=window.prompt('New email address:\n(NOTE: If you add an address that isn\'t configured in GMail. It isn\'t going ot work.');
if (entry && entry.length && entry.indexOf('@')!==-1) {
this.options[this.selectedIndex] = new Option(entry,entry);
this.options[this.options.length] = new Option('New address...','(new)');
this.selectedIndex=selected_idx;
} else if (entry && entry.length > 0 && entry.indexOf('@') === -1) {
window.alert("That's not a valid email address.");
this.selectedIndex=$(this).attr('old_selected_index');
} else {
this.selectedIndex=$(this).attr('old_selected_index');
}
} else if (selected_value=='(default)') {
$sig_field.val(default_signature);
} else {
$sig_field.val(getMatchingSig(selected_value));
}
e.stopPropagation();
return false;
}).after('<br>').css({ fontSize: '13px', margin: '0.25em 0'}),
$sig_entry=$("<textarea name='setting_sig' rows='8' cols='80'>").appendTo($fieldset).css('width','100%').after('<br>'),
$button=$("<input type='submit'>").val(" Update Signature ").appendTo($fieldset).css({ fontSize: '13px', margin: '0.25em 0'}),
$cancel=$("<input type='button'>").val(' Cancel ').click(function (e) {
$settings_element.hide().empty();
e.stopPropagation();
return false;
}).appendTo($fieldset).css({ fontSize: '13px', margin: '0.25em 0', float: 'right'});
$("<div>").css({
fontFamily: 'verdana,arial,sans-serif',
fontSize: '11px',
fontWeight: 'bold',
color: '#333'
}).html("Only one signature is saved at a time. If you change one signature and then choose a different address,<br>that signature will not be updated.").appendTo($fieldset);
$settings_element.show().insertAfter(address_holder).css({
position: 'fixed',
top: '25%',
left: '20%',
zIndex: 80000,
background: 'white',
padding: '0.5em',
border: '2px solid #006'
});
$select.append(new Option('(default)',"[Default signature]"));
if (gmail_addresses.length) {
for (i=0; i < gmail_addresses.length; i++) {
if (gmail_addresses[i] && gmail_addresses[i].length) {
$select.append(new Option(gmail_addresses[i],gmail_addresses[i]));
}
}
} else if (address_select && address_select.options && address_select.options.length) {
for (i=0; i < address_select.options.length; i++) {
$select.append(new Option(address_select.options[i].value,address_select.options[i].value));
}
} else {
$select.append(new Option(selected_address,selected_address));
}
$select.append(new Option('New address...','(new)'));
$select.val(selected_address);
$select.attr('old_selected_index',$select[0].selectedIndex);
$sig_entry.val(getMatchingSig($select.val()));
e.stopPropagation();
return false;
},
$open_settings=$("<a href='Custom Signature'>").html('Custom Signature').css({
paddingLeft: '1em',
fontFamily: 'verdana,arial,sans-serif',
fontSize: '10px',
color: 'red'
}).click(showSettings),
updateSig = function(chosen_address) {
var sig = '',
was_changed=false,
updated_content='',
replace_expr='',
replace_regex=null,
current_scroll=mailBodyElem.scrollTop,
current_slctnstart=0,
current_slctnend=0,
i = 0;
if (selected_address === chosen_address) {
return true;
} else {
selected_address=chosen_address;
}
try {
current_slctnstart=mailBodyElem.selectionStart;
current_slctnend=mailBodyElem.selectionEnd;
} catch (e) {
// do nothing
}
sig=getMatchingSig(selected_address);
if (mailBodyElem && mailBodyElem.value) {
updated_content=''+mailBodyElem.value+'';
if (default_signature && default_signature.length) {
replace_expr=default_signature;
replace_expr=replace_expr.replace(/([\[\]+*?\{\}])/g,'\\$1'); // escape anything used in RegEx
replace_expr=replace_expr.replace(/\s+$/g,''); // Trim any whitespace from end
replace_expr=replace_expr.replace(/\s+/g,'\\s+'); // Replace all instances of whitespace with a whitespace search (deals with line ending issues)
replace_expr+='\\s*$'; // add a whitespace search at the end (to get rid of excess whitespace at the end and to make sure that we don't replace any mid-body sigs
replace_regex=new RegExp(replace_expr);
if (updated_content.match(replace_regex)) {
updated_content=updated_content.replace(replace_regex,sig);
was_changed=true;
}
}
if (!was_changed) {
for (i=0; i < matching_signatures.length; i++) {
replace_expr=matching_signatures[i];
replace_expr=replace_expr.replace(/([\[\]+*?\{\}])/g,'\\$1'); // escape anything used in RegEx
replace_expr=replace_expr.replace(/\s+$/g,''); // Trim any whitespace from end
if (replace_expr.length) {
replace_expr=replace_expr.replace(/\s+/g,'\\s+'); // Replace all instances of whitespace with a whitespace search (deals with line ending issues)
replace_expr+='\\s*$'; // add a whitespace search at the end (to get rid of excess whitespace at the end and to make sure that we don't replace any mid-body sigs
replace_expr=replace_expr;
replace_regex=new RegExp(replace_expr);
if (updated_content.match(replace_regex)) {
updated_content=updated_content.replace(replace_regex,sig);
was_changed=true;
break;
}
}
}
}
if (!was_changed) {
updated_content+=sig;
}
if (mailBodyElem.value != updated_content) {
mailBodyElem.value=updated_content;
mailBodyElem.scrollTop=current_scroll;
try {
mailBodyElem.selectionStart=current_slctnstart >= 0 ? current_slctnstart : 0;
mailBodyElem.selectionEnd=current_slctnend >= 0 ? current_slctnend : 0;
} catch (e) {
//do nothing
}
}
}
},
chooseSig = function () {
updateSig(this.options[this.selectedIndex].value);
},
reset = function () {
mailBodyElem=null;
selected_address=-1;
address_holder=null;
address_select=null;
},
setup = function() {
var sels=null,
txtareas=null,
inpts=null,
chosen_email=-1,
prnt=null,
i = 0;
active_view_element=gmail.getActiveViewElement();
mailBodyElem=null;
txtareas=active_view_element.getElementsByTagName('textarea');
for (i=txtareas.length-1; i >= 0 ; i--) {
if (txtareas[i].name==='body') {
mailBodyElem=txtareas[i];
break;
}
}
address_holder=null;
address_select=null;
sels=active_view_element.getElementsByTagName('select');
for (i=sels.length-1; i >= 0 ; i--) {
if (sels[i].name==='from') {
address_select=sels[i];
address_select.addEventListener('change',chooseSig,true);
address_holder=sels[i];
break;
}
}
if (chosen_email==-1 && address_select) {
chosen_email=address_select.options[address_select.selectedIndex].value;
}
if (!address_holder) {
inpts=active_view_element.getElementsByTagName('input');
for (i=inpts.length-1; i >= 0 ; i--) {
if (inpts[i].name==='from') {
address_holder=inpts[i];
break;
}
}
}
if (chosen_email == -1 && address_holder && address_holder.value) {
chosen_email=address_holder.value;
}
if (address_holder) {
$(address_holder).after($open_settings);
if (chosen_email.length) {
updateSig(chosen_email);
}
}
};
gmail.registerViewChangeCallback(function() {
var vt=gmail.getActiveViewType();
reset();
if (vt==='co' || vt==='cv') {
setup();
}
});
setup();
window.setInterval(setup,5000);
});
}
}, true);
