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/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Handles the resizing of a menu according to the available screen width
*
* Uses themes/original/css/resizable-menu.css.php
*
* To initialise:
* $('#myMenu').menuResizer(function () {
* // This function will be called to find out how much
* // available horizontal space there is for the menu
* return $('body').width() - 5; // Some extra margin for good measure
* });
*
* To trigger a resize operation:
* $('#myMenu').menuResizer('resize'); // Bind this to $(window).resize()
*
* To restore the menu to a state like before it was initialized:
* $('#myMenu').menuResizer('destroy');
*
* @package PhpMyAdmin
*/
(function ($) {
function MenuResizer($container, widthCalculator) {
var self = this;
self.$container = $container;
self.widthCalculator = widthCalculator;
// create submenu container
var link = $('<a />', {href: '#', 'class': 'tab nowrap'})
.text(PMA_messages.strMore)
.bind('click', false); // same as event.preventDefault()
var img = $container.find('li img');
if (img.length) {
$(PMA_getImage('b_more.png').toString()).prependTo(link);
}
var $submenu = $('<li />', {'class': 'submenu'})
.append(link)
.append($('<ul />'))
.mouseenter(function() {
if ($(this).find('ul .tabactive').length === 0) {
$(this)
.addClass('submenuhover')
.find('> a')
.addClass('tabactive');
}
})
.mouseleave(function() {
if ($(this).find('ul .tabactive').length === 0) {
$(this)
.removeClass('submenuhover')
.find('> a')
.removeClass('tabactive');
}
});
$container.children('.clearfloat').remove();
$container.append($submenu).append("<div class='clearfloat'></div>");
setTimeout(function () {
self.resize();
}, 4);
}
MenuResizer.prototype.resize = function () {
var wmax = this.widthCalculator.call(this.$container);
var $submenu = this.$container.find('.submenu:last');
var submenu_w = $submenu.outerWidth(true);
var $submenu_ul = $submenu.find('ul');
var $li = this.$container.find('> li');
var $li2 = $submenu_ul.find('li');
var more_shown = $li2.length > 0;
// Calculate the total width used by all the shown tabs
var total_len = more_shown ? submenu_w : 0;
var l = $li.length - 1;
for (var i = 0; i < l; i++) {
total_len += $($li[i]).outerWidth(true);
}
// Now hide menu elements that don't fit into the menubar
var hidden = false; // Whether we have hidden any tabs
while (total_len >= wmax && --l >= 0) { // Process the tabs backwards
hidden = true;
var el = $($li[l]);
var el_width = el.outerWidth(true);
el.data('width', el_width);
if (! more_shown) {
total_len -= el_width;
el.prependTo($submenu_ul);
total_len += submenu_w;
more_shown = true;
} else {
total_len -= el_width;
el.prependTo($submenu_ul);
}
}
// If we didn't hide any tabs, then there might be some space to show some
if (! hidden) {
// Show menu elements that do fit into the menubar
for (var i = 0, l = $li2.length; i < l; i++) {
total_len += $($li2[i]).data('width');
// item fits or (it is the last item
// and it would fit if More got removed)
if (total_len < wmax ||
(i == $li2.length - 1 && total_len - submenu_w < wmax)
) {
$($li2[i]).insertBefore($submenu);
} else {
break;
}
}
}
// Show/hide the "More" tab as needed
if ($submenu_ul.find('li').length > 0) {
$submenu.addClass('shown');
} else {
$submenu.removeClass('shown');
}
if (this.$container.find('> li').length == 1) {
// If there is only the "More" tab left, then we need
// to align the submenu to the left edge of the tab
$submenu_ul.removeClass().addClass('only');
} else {
// Otherwise we align the submenu to the right edge of the tab
$submenu_ul.removeClass().addClass('notonly');
}
if ($submenu.find('.tabactive').length) {
$submenu
.addClass('active')
.find('> a')
.removeClass('tab')
.addClass('tabactive');
} else {
$submenu
.removeClass('active')
.find('> a')
.addClass('tab')
.removeClass('tabactive');
}
};
MenuResizer.prototype.destroy = function () {
var $submenu = this.$container.find('li.submenu').removeData();
$submenu.find('li').appendTo(this.$container);
$submenu.remove();
};
/** Public API */
var methods = {
init: function(widthCalculator) {
return this.each(function () {
var $this = $(this);
if (! $this.data('menuResizer')) {
$this.data(
'menuResizer',
new MenuResizer($this, widthCalculator)
);
}
});
},
resize: function () {
return this.each(function () {
var self = $(this).data('menuResizer');
if (self) {
self.resize();
}
});
},
destroy: function () {
return this.each(function () {
var self = $(this).data('menuResizer');
if (self) {
self.destroy();
}
});
}
};
/** Extend jQuery */
$.fn.menuResizer = function(method) {
if (methods[method]) {
return methods[method].call(this);
} else if (typeof method === 'function') {
return methods.init.apply(this, [method]);
} else {
$.error('Method ' + method + ' does not exist on jQuery.menuResizer');
}
};
})(jQuery);