(function(punymce) {
	punymce.plugins.EditSource = function(ed) {
		var DOM = punymce.DOM, extend = punymce.extend, each = punymce.each, isWebKit = punymce.isWebKit;
		var sourceView = 0;

		if (!ed.settings.editsource || ed.settings.editsource.skip_css)
			DOM.loadCSS(punymce.baseURL + '/plugins/editsource/css/editor.css');

		ed.onBeforeGetContent.add(function(ed, o) {
			if (o.save && sourceView)
				ed.setContent(DOM.get(ed.settings.id + '_editsourcearea').value, {load : true});
		});

		// Add commands
		extend(ed.commands, {
			mceEditSource : function(u, v, e) {
				var ta, ifr = ed.getIfr(), id = ed.settings.id, w = ed.width, h = ed.height, f, but = DOM.get(id + '_editsource');

				// Enable source view
				if (!sourceView) {
					DOM.addClass(but, 'active');

					// Disable all buttons
					each(DOM.select('li', id + '_c'), function(n) {
						if (n != but)
							DOM.addClass(n, 'disabled');
					});

					// Hide iframe and view textarea
					ta = DOM.add(ifr.parentNode, 'textarea', {id : id + '_editsourcearea', 'class' : 'editsource', style : 'width:' + w + 'px;height:' + h + 'px;'});
					ta.value = ed.getContent({save : true});
					ta.focus();

					// A spacer element was need since IE 6/7 produces bugs if the container is sized
					// Iframe needs to be hidden IE and FF so that the designMode caret doesn't get shown
					// And on Safari 2.x hiding an iframe will break the iframe
					if (!isWebKit) {
						DOM.add(ifr.parentNode, 'div', {id : id + '_edspacer', 'class' : 'spacer', style : 'width:' + w + 'px;height:' + h + 'px;'});
						ifr.style.display = 'none';
					}

					sourceView = 1;
					return false;
				}

				// Disable source view
				sourceView = 0;
				DOM.removeClass(but, 'active');

				// Show iframe and remove spacer
				if (!isWebKit) {
					ifr.style.display = 'block';
					ta = DOM.get(id + '_edspacer');
					ta.parentNode.removeChild(ta);
				}

				// Remove textarea and set contents
				ta = DOM.get(id + '_editsourcearea');
				ed.setContent(ta.value, {load : true});
				ta.parentNode.removeChild(ta);

				// Enable all buttons
				each(DOM.select('li', id + '_c'), function(n) {
					DOM.removeClass(n, 'disabled');
				});

				return false;
			}
		});

		// Add tools
		extend(ed.tools, {
			editsource : {cmd : 'mceEditSource', title : punymce.I18n.editsource}
		});
	};

	// English i18n strings
	punymce.extend(punymce.I18n, {
		editsource : 'Edit HTML source'
	});
})(punymce);