ui.widgets.js

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elgg.provide('elgg.ui.widgets');

elgg.ui.widgets.init = function() {

    // widget layout?
    if ($(".elgg-widgets").length === 0) {
        return;
    }

    $(".elgg-widgets").sortable({
        items:                'div.elgg-module-widget.elgg-state-draggable',
        connectWith:          '.elgg-widgets',
        handle:               '.elgg-widget-handle',
        forcePlaceholderSize: true,
        placeholder:          'elgg-widget-placeholder',
        opacity:              0.8,
        revert:               500,
        stop:                 elgg.ui.widgets.move
    });

    $('.elgg-widgets-add-panel li.elgg-state-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.setMinHeight(".elgg-widgets");
};

elgg.ui.widgets.add = function(event) {
    var type = $(this).data('elgg-widget-type');

    // 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-state-unavailable');
        $(this).removeClass('elgg-state-available');
        $(this).unbind('click', elgg.ui.widgets.add);
    }

    elgg.action('widgets/add', {
        data: {
            handler: type,
            page_owner_guid: elgg.get_page_owner_guid(),
            context: $("input[name='widget_context']").val(),
            show_access: $("input[name='show_access']").val(),
            default_widgets: $("input[name='default_widgets']").val() || 0
        },
        success: function(json) {
            $('#elgg-widget-col-1').prepend(json.output);
        }
    });
    event.preventDefault();
};

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: {
            widget_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);
};

elgg.ui.widgets.remove = function(event) {
    if (confirm(elgg.echo('deleteconfirm')) === false) {
        event.preventDefault();
        return;
    }

    var $widget = $(this).closest('.elgg-module-widget');

    // if widget type is single instance type, enable the add buton
    var type = $(this).data('elgg-widget-type');
    $container = $(this).parents('.elgg-layout-widgets').first();
    $button = $('[data-elgg-widget-type="' + type + '"]', $container);
    var multiple = $button.attr('class').indexOf('elgg-widget-multiple') != -1;
    if (multiple === false) {
        $button.addClass('elgg-state-available');
        $button.removeClass('elgg-state-unavailable');
        $button.unbind('click', elgg.ui.widgets.add); // make sure we don't bind twice
        $button.click(elgg.ui.widgets.add);
    }

    $widget.remove();

    // delete the widget through ajax
    elgg.action($(this).attr('href'));

    event.preventDefault();
};

elgg.ui.widgets.collapseToggle = function(event) {
    $(this).toggleClass('elgg-widget-collapsed');
    $(this).parent().parent().find('.elgg-body').slideToggle('medium');
    event.preventDefault();
};

elgg.ui.widgets.saveSettings = function(event) {
    $(this).parent().slideToggle('medium');
    var $widgetContent = $(this).parent().parent().children('.elgg-widget-content');

    // stick the ajax loader in there
    var $loader = $('#elgg-widget-loader').clone();
    $loader.attr('id', '#elgg-widget-active-loader');
    $loader.removeClass('hidden');
    $widgetContent.html($loader);

    var default_widgets = $("input[name='default_widgets']").val() || 0;
    if (default_widgets) {
        $(this).append('<input type="hidden" name="default_widgets" value="1">');
    }

    elgg.action('widgets/save', {
        data: $(this).serialize(),
        success: function(json) {
            $widgetContent.html(json.output);
            if (typeof(json.title) != "undefined") {
                var $widgetTitle = $widgetContent.parent().parent().find('.elgg-widget-title');
                $widgetTitle.html(json.title);
            }
        }
    });
    event.preventDefault();
};

elgg.ui.widgets.setMinHeight = function(selector) {
    var maxBottom = 0;
    $(selector).each(function() {
        var bottom = parseInt($(this).offset().top + $(this).height());
        if (bottom > maxBottom) {
            maxBottom = bottom;
        }
    });
    $(selector).each(function() {
        var bottom = parseInt($(this).offset().top + $(this).height());
        if (bottom < maxBottom) {
            var newMinHeight = parseInt($(this).height() + (maxBottom - bottom));
            $(this).css('min-height', newMinHeight + 'px');
        }
    });
};

elgg.register_hook_handler('init', 'system', elgg.ui.widgets.init);