/**
* editor_plugin_src.js
*
* Copyright 2009, Moxiecode Systems AB
* Released under LGPL License.
*
* License: http://tinymce.moxiecode.com/license
* Contributing: http://tinymce.moxiecode.com/contributing
*/

(function() {
var DOM = tinymce.DOM, Event = tinymce.dom.Event, each = tinymce.each, explode = tinymce.explode;

tinymce.create('tinymce.plugins.TabFocusPlugin', {
init : function(ed, url) {
function tabCancel(ed, e) {
if (e.keyCode === 9)
return Event.cancel(e);
};

function tabHandler(ed, e) {
var x, i, f, el, v;

function find(d) {
el = DOM.select(':input:enabled,*[tabindex]');
function canSelect(e) {
return e.type != 'hidden' &&
e.tabIndex != '-1' &&
!(el[i].style.display == "none") &&
!(el[i].style.visibility == "hidden");
}

each(el, function(e, i) {
if (e.id == ed.id) {
x = i;
return false;
}
});

if (d > 0) {
for (i = x + 1; i < el.length; i++) {
if (canSelect(el[i]))
return el[i];
}
} else {
for (i = x - 1; i >= 0; i--) {
if (canSelect(el[i]))
return el[i];
}
}

return null;
};

if (e.keyCode === 9) {
v = explode(ed.getParam('tab_focus', ed.getParam('tabfocus_elements', ':prev,:next')));

if (v.length == 1) {
v[1] = v[0];
v[0] = ':prev';
}

// Find element to focus
if (e.shiftKey) {
if (v[0] == ':prev')
el = find(-1);
else
el = DOM.get(v[0]);
} else {
if (v[1] == ':next')
el = find(1);
else
el = DOM.get(v[1]);
}

if (el) {
if (el.id && (ed = tinymce.get(el.id || el.name)))
ed.focus();
else
window.setTimeout(function() {
if (!tinymce.isWebKit)
window.focus();
el.focus();
}, 10);

return Event.cancel(e);
}
}
};

ed.onKeyUp.add(tabCancel);

if (tinymce.isGecko) {
ed.onKeyPress.add(tabHandler);
ed.onKeyDown.add(tabCancel);
} else
ed.onKeyDown.add(tabHandler);

},

getInfo : function() {
return {
longname : 'Tabfocus',
author : 'Moxiecode Systems AB',
authorurl : 'http://tinymce.moxiecode.com',
infourl : 'http://wiki.moxiecode.com/index.php/TinyMCE:Plugins/tabfocus',
version : tinymce.majorVersion + "." + tinymce.minorVersion
};
}
});

// Register plugin
tinymce.PluginManager.add('tabfocus', tinymce.plugins.TabFocusPlugin);
})();