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elgg.provide('elgg.ui.widgets');
/**
* Widgets initialization
*
* @return void
*/
elgg.ui.widgets.init = function() {
// widget layout?
if ($(".elgg-widgets").length == 0) {
return;
}
$(".elgg-widgets").sortable({
items: 'div.elgg-widget',
connectWith: '.elgg-widgets',
handle: 'div.drag-handle',
forcePlaceholderSize: true,
placeholder: 'elgg-widget-placeholder',
opacity: 0.8,
revert: 500,
stop: elgg.ui.widgets.move
});
$('.elgg-widgets-add-panel li.elgg-widget-available').click(elgg.ui.widgets.add);
$('a.elgg-widget-delete-button').live('click', elgg.ui.widgets.remove);
$('.elgg-widget-edit > form ').live('submit', elgg.ui.widgets.saveSettings);
$('a.elgg-widget-collapse-button').live('click', elgg.ui.widgets.collapseToggle);
elgg.ui.widgets.equalHeight(".elgg-widgets");
};
/**
* Adds a new widget
*
* Makes Ajax call to persist new widget and inserts the widget html
*
* @param {Object} event
* @return void
*/
elgg.ui.widgets.add = function(event) {
// elgg-widget-type-<type>
var type = $(this).attr('id');
type = type.substr(type.indexOf('elgg-widget-type-') + "elgg-widget-type-".length);
// if multiple instances not allow, disable this widget type add button
var multiple = $(this).attr('class').indexOf('elgg-widget-multiple') != -1;
if (multiple == false) {
$(this).addClass('elgg-widget-unavailable');
$(this).removeClass('elgg-widget-available');
$(this).unbind('click', elgg.ui.widgets.add);
}
elgg.action('widgets/add', {
data: {
handler: type,
user_guid: elgg.get_loggedin_userid(),
context: $("input[name='widget_context']").val()
},
success: function(json) {
$('#elgg-widget-col-1').prepend(json.output);
var $widget = $('#elgg-widget-col-1').children(":first");
}
});
event.preventDefault();
}
/**
* Persist the widget's new position
*
* @param {Object} event
* @param {Object} ui
*
* @return void
*/
elgg.ui.widgets.move = function(event, ui) {
// elgg-widget-<guid>
var guidString = ui.item.attr('id');
guidString = guidString.substr(guidString.indexOf('elgg-widget-') + "elgg-widget-".length);
// elgg-widget-col-<column>
var col = ui.item.parent().attr('id');
col = col.substr(col.indexOf('elgg-widget-col-') + "elgg-widget-col-".length);
elgg.action('widgets/move', {
data: {
guid: guidString,
column: col,
position: ui.item.index()
}
});
// @hack fixes jquery-ui/opera bug where draggable elements jump
ui.item.css('top', 0);
ui.item.css('left', 0);
}
/**
* Removes a widget from the layout
*
* Event callback the uses Ajax to delete the widget and removes its HTML
*
* @param {Object} event
* @return void
*/
elgg.ui.widgets.remove = function(event) {
var $widget = $(this).parent().parent();
// if widget type is single instance type, enable the add buton
var type = $widget.attr('class');
// elgg-widget-instance-<type>
type = type.substr(type.indexOf('elgg-widget-instance-') + "elgg-widget-instance-".length);
$button = $('#elgg-widget-type-' + type);
var multiple = $button.attr('class').indexOf('elgg-widget-multiple') != -1;
if (multiple == false) {
$button.addClass('elgg-widget-available');
$button.removeClass('elgg-widget-unavailable');
$button.unbind('click', elgg.ui.widgets.add); // make sure we don't bind twice
$button.click(elgg.ui.widgets.add);
}
$widget.remove();
// elgg-widget-delete-button-<guid>
var id = $(this).attr('id');
id = id.substr(id.indexOf('elgg-widget-delete-button-') + "elgg-widget-delete-button-".length);
elgg.action('widgets/delete', {
data: {
guid: id
}
});
event.preventDefault();
}
/**
* Toggle the collapse state of the widget
*
* @param {Object} event
* @return void
*/
elgg.ui.widgets.collapseToggle = function(event) {
$(this).toggleClass('elgg-widget-collapsed');
$(this).parent().parent().find('.elgg-widget-container').slideToggle('medium');
event.preventDefault();
}
/**
* Save a widget's settings
*
* Uses Ajax to save the settings and updates the HTML.
*
* @param {Object} event
* @return void
*/
elgg.ui.widgets.saveSettings = function(event) {
$(this).parent().slideToggle('medium');
var $widgetContent = $(this).parent().parent().children('.elgg-widget-content');
// stick the ajaxk loader in there
var $loader = $('#elgg-widget-loader').clone();
$loader.attr('id', '#elgg-widget-active-loader');
$loader.removeClass('hidden');
$widgetContent.html($loader);
elgg.action('widgets/save', {
data: $(this).serialize(),
success: function(json) {
$widgetContent.html(json.output);
}
});
event.preventDefault();
}
/**
* Make all elements have the same min-height
*
* This addresses the issue of trying to drag a widget into a column that does
* not have any widgets.
*
* @param {String} selector
* @return void
*/
elgg.ui.widgets.equalHeight = function(selector) {
var maxHeight = 0;
$(selector).each(function() {
if ($(this).height() > maxHeight) {
maxHeight = $(this).height();
}
})
$(selector).css('min-height', maxHeight);
}
elgg.register_event_handler('init', 'system', elgg.ui.widgets.init);
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