comments.js

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define(['jquery', 'elgg'], function ($, elgg) {
    /* Autofocuses first text input in a comment form when toggled */
    $(document).on('elgg_ui_toggle', function (e, data) {
        var $toggle = $(e.target);
        var $elements = data.$toggled_elements;

        if ($elements.is('.elgg-river-responses > .elgg-form-comment-save')) {
            if ($toggle.hasClass('elgg-state-active')) {
                $elements.find('.elgg-input-text').focus();
            } else {
                $toggle.blur();
            }
        }
    });

    $(document).on('click', '.elgg-toggle-comment', function (event) {
        var $anchor = $(this);
        var comment_guid = $anchor.data().loadComment;
        
        require(['elgg/Ajax', 'elgg/toggle'], function(Ajax) {
            var ajax = new Ajax();
                
            ajax.form('comment/save', {
                data: {
                    guid: comment_guid
                },
                success: function(result) {
                    $('div[data-comments-placeholder=' + comment_guid + ']')
                        .html(result)
                        .slideToggle('medium')
                        .find('textarea, [contenteditable]').filter(':visible').first().focus();
                    
                    $anchor.toggleClass('elgg-toggle elgg-toggle-comment');
                }
            });
        });
    });

    $(document).on('submit', '.elgg-form-comment-save', function (event) {
        var $form = $(this);
        
        $form.find('.elgg-button-submit').prop('disabled', true);

        require(['elgg/Ajax'], function(Ajax) {
            var ajax = new Ajax();

            ajax.action($form.attr('action'), {
                data: ajax.objectify($form),
                success: function(result) {
                    var $container = $form.closest('.elgg-comments');
                    var view_name = 'page/elements/comments';
                    var comment_guid = result.guid;
                    var data = {
                        guid: $form.find('input[name="entity_guid"]').val(),
                        id: $form.attr('id'),
                        show_guid: comment_guid,
                        inline: $form.find('.elgg-input-text').length
                    };
                        
                    if (!$container.length) {
                        $container = $form.closest('.elgg-river-responses');
                        view_name = 'river/elements/responses';
                        data.river_id = $container.closest('.elgg-river-item').parent().attr('id').replace('item-river-', '');
                    }
                    
                    if (!$container.length) {
                        $form.find('.elgg-button-submit').prop('disabled', true);
                        return;
                    }

                    // the pagination returned will have a non-functional link that points to the current URL,
                    // but we want the the link to reload the page.
                    function fix_pagination($container) {
                        function normalize(url) {
                            return url.replace(/#.*/, '');
                        }

                        var base_url = normalize(location.href);

                        $container.find('.elgg-pagination a').each(function () {
                            if (normalize(this.href) === base_url) {
                                $(this).on('click', function () {
                                    location.reload();
                                });
                            }
                        });
                    }
                    
                    ajax.view(view_name, {
                        data: data,
                        success: function(result) {
                            if (view_name === 'river/elements/responses') {
                                $container.html(result);
                            } else {
                                $container.html($(result).filter('.elgg-comments').html());
                            }
                            
                            var $comment = $container.find('#elgg-object-' + comment_guid);
                            $comment.addClass('elgg-state-highlight');
                            
                            $comment[0].scrollIntoView({behavior: 'smooth'});
        
                            fix_pagination($container);
                        },
                        error: function() {
                            $form.find('.elgg-button-submit').prop('disabled', false);
                        }
                    });
                },
                error: function () {
                    $form.find('.elgg-button-submit').prop('disabled', false);
                }
            });
        });
        
        event.preventDefault();
        event.stopPropagation();
    });
    
    
    $(document).on('click', '.elgg-menu-item-edit > a', function () {
        var $trigger = $(this).closest('.elgg-menu-hover').data('trigger');
        if ((typeof $trigger === 'undefined') || !$trigger.is('.elgg-item-object-comment a')) {
            return;
        }

        // store object as data in the edit link
        var dc = $(this).data('Comment');
        if (!dc) {
            var guid = $(this).data().commentGuid;
            dc = new Comment(guid, $trigger.closest('.elgg-item-object-comment'));
            $(this).data('Comment', dc);
        }
        
        dc.toggleEdit();
        
        require(['elgg/popup'], function(popup) {
            popup.close();
        });
        
        return false;
    });
    
    function Comment(guid, item) {
        this.guid = guid;
        this.$item = item;
    }
    
    Comment.prototype = {
        getForm: function () {
            return this.$item.find('#edit-comment-' + this.guid);
        },

        hideForm: function () {
            this.getForm().toggleClass('hidden');
            this.getForm().prev().toggleClass('hidden');
        },

        showForm: function () {
            this.getForm().toggleClass('hidden');
            this.getForm().prev().toggleClass('hidden');
            
            this.getForm().find('textarea, [contenteditable]').filter(':visible').first().focus();
        },

        loadForm: function () {
            var that = this;

            require(['elgg/Ajax'], function(Ajax) {
                var ajax = new Ajax();
                
                // Get the form using ajax
                ajax.view('core/ajax/edit_comment?guid=' + that.guid, {
                    success: function(html) {
                        // Add the form to DOM
                        that.$item.find('.elgg-body').first().append(html);
        
                        that.showForm();
        
                        var $form = that.getForm();
        
                        $form.find('.elgg-button-cancel').on('click', function () {
                            that.hideForm();
                            return false;
                        });
        
                        // save
                        $form.on('submit', function () {
                            that.submitForm();
                            return false;
                        });
                    }
                });
            });
        },

        submitForm: function () {
            var $form = this.getForm();
            $form.find('.elgg-button-submit').prop('disabled', true);
            
            require(['elgg/Ajax'], function(Ajax) {
                var ajax = new Ajax();
                
                ajax.action($form.attr('action'), {
                    data: ajax.objectify($form),
                    success: function(result) {
                        if (result.output) {
                            // Update list item content
                            $form.closest('.elgg-item-object-comment').html(result.output);
                        }
                    },
                    error: function() {
                        $form.find('.elgg-button-submit').prop('disabled', false);
                    }
                });
            });

            return false;
        },

        toggleEdit: function () {
            var $form = this.getForm();
            if ($form.length) {
                if ($form.hasClass('hidden')) {
                    this.showForm();
                } else {
                    this.hideForm();
                }
            } else {
                this.loadForm();
            }
            
            return false;
        }
    };
});