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src/paginator.js  view on Meta::CPAN

                this.index += this.options.step;
                this.loadContent();
                return true;
            }
            else
            return false;
        },

        /* Get the prev set of records from the current url */
        getPrevPage: function() {
            if(this._executing == false && this.hasPrevious()) {
                this.index -= this.options.step;
                this.loadContent();
                return true;
            }
            else
            return false;
        },

        getLastPage: function() {
            if(this._executing == false && this.hasNext()) {
                this.index = Math.floor(this.total/this.options.step)*this.options.step+1;
                this.loadContent();
                return true;
            }
            else
            return false;
        },

        getFirstPage: function() {
            if(this._executing == false && this.hasPrevious()) {
                this.index = 1;
                this.loadContent();
                return true;
            }
            else
            return false;
        },

        // Core function of the pagination object.
        // Get records from url that are in the specified range
        loadContent: function() {
            if(this._executing == true) return; // still handling a previous request
            else this._executing = true;

            // Add STEP and INDEX as url parameters
            var url = this.url;
            this.options.parameters.update({
                STEP: this.options.step,
                INDEX: this.index,
                RESET: this.options.reset
            });

            this.links_container.hide(); // hide 'em. (one click at a time)
            this.list_container.update(new Element('div', {'class': bcss+'-loading'}));

            new Ajax.Request(url, {
                evalJSON: 'force',  // force evaluation of response into responseJSON
                method: this.options.method,
                parameters: this.options.parameters,
                requestTimeout: this.options.timeoutAjax * 1000,
                onTimeout: function(req) {
                    this._executing = false;
                    this.list_container.update(this.options.errorMsg);
                }.bind(this),
                // on s'attend à avoir du JSON en retour
                onFailure: function(req) {
                    this._executing = false;
                    var answer = req.responseJSON;
                    var msg = answer.error.message || this.options.errorMsg;
                    this.list_container.update(msg);
                }.bind(this),
                onSuccess: function(req) {
                    this._executing = false;

                    var answer = req.responseJSON;
                    if(answer) {
                        var nb_displayed_records = this.options.onSuccess(answer);
                        this.total     = answer.total; // total number of records

                        this.end_index = Math.min(this.total, this.index+nb_displayed_records-1); // end index of records on current page

                        this.textElem.innerHTML = (this.total > 0)?
                            this.index + " à " + this.end_index + " de " + this.total: '0';
                        _toggleNavigatorsVisibility.apply(this);
                    }
                 }.bind(this)
            });
        }
    }
}());