Synnefo

// Copyright 2011 GRNET S.A. All rights reserved.

// 

// Redistribution and use in source and binary forms, with or

// without modification, are permitted provided that the following

// conditions are met:

// 

//   1. Redistributions of source code must retain the above

//      copyright notice, this list of conditions and the following

//      disclaimer.

// 

//   2. Redistributions in binary form must reproduce the above

//      copyright notice, this list of conditions and the following

//      disclaimer in the documentation and/or other materials

//      provided with the distribution.

// 

// THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

// OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

// USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

// POSSIBILITY OF SUCH DAMAGE.

// 

// The views and conclusions contained in the software and

// documentation are those of the authors and should not be

// interpreted as representing official policies, either expressed

// or implied, of GRNET S.A.

// 

;(function(root){

    // root

    var root = root;

    // setup namepsaces

    var snf = root.synnefo = root.synnefo || {};

    var models = snf.models = snf.models || {}

    var storage = snf.storage = snf.storage || {};

    var ui = snf.ui = snf.ui || {};

    var util = snf.util = snf.util || {};

    var views = snf.views = snf.views || {}

    // shortcuts

    var bb = root.Backbone;

    views.ErrorView = views.Overlay.extend({

        view_id: "error_view",

        content_selector: "#error-overlay-content",

        css_class: 'overlay-error',

        overlay_id: "error-overlay",

        error_stack: {},

        initialize: function() {

            views.ErrorView.__super__.initialize.apply(this, arguments);

            var self = this;

            this.error_state = false;

            this.$(".actions .show-details, .actions .hide-details").click(function() {

                self.$(".error-details").toggle();

                self.$(".show-details").toggle();

                self.$(".hide-details").toggle();

            });

            this.$(".key.details").click(function() {

                $(this).next().toggle();

                if (!$(this).next().is(":visible")) {

                    $(this).addClass("expand");

                } else {

                    $(this).removeClass("expand");

                }

            })

            this.$(".actions .report-error").click(_.bind(function() {

                this.report_error();

            }, this));

            this.$(".actions .hide-details").hide();

            this.$(".reload-app").click(function(){

                window.location.reload(true);

            });

            this.$(".show-next").click(_.bind(function(){

                this.show_next_error();

            }, this));

            this.$(".show-prev").click(_.bind(function(){

                this.show_prev_error();

            }, this));

            this.displaying_error = false;

            this.error_stack_index = [];

            this.error_stack = {};

        },

        error_object: function() {

            return {ns:this.ns, code:this.code, message:this.message, details:this.details};

        },

        report_error: function() {

            this.feedback_view = this.feedback_view || ui.main.feedback_view;

            this.hide(false);

            this.displaying_error = true;

            window.setTimeout(_.bind(function() {

                this.feedback_view.show(this.get_report_message(), true, {error: this.error_object()});

            }, this), 400);

        },

        get_report_message: function() {

            var fdb_msg =   "Error report\n" +

                "-------------------" + "\n" +

                "Code: " + this.code + "\n" + 

                "Type: " + this.type + "\n" +

                "Message: " + this.message + "\n" +

                "Module: " + this.ns + "\n" +

                "Details: " + this.details + "\n\n" +

                "Please describe the actions that triggered the error:\n"

            return fdb_msg;

        },

        show_error: function(ns, code, message, type, details, error_options) {

            var error_entry = [ns, code, message, type, details, error_options];

            var last_error_key = this.update_errors_stack(error_entry);

            if (!this.is_visible && !this.displaying_error) {

                this.current_error = last_error_key;

                this.display_error.call(this, last_error_key);

                this.show();

            }

            this.update_errors_stack();

        },

        update_errors_stack: function(entry) {

            if (snf.api.error_state != snf.api.STATES.ERROR) { 

                this.error_stack = {};

                this.error_stack_index = [];

            };

            var stack_key = (new Date()).getTime();

            this.error_stack[stack_key] = entry;

            this.error_stack_index.push(stack_key);

            this.errors_occured = this.error_stack_index.length;

            this.$(".error-nav").hide();

            //this.update_errors_stack_layout();

            return stack_key;

        },

        is_last_error: function(stack_key) {

            return this.error_stack_index.indexOf(stack_key) == this.error_stack_index.length - 1;

        },

        is_first_error: function(stack_key) {

            return this.error_stack_index.indexOf(stack_key) == 0;

        },

        update_errors_stack_layout: function() {

            if (!this.current_error) { return };

            if (this.errors_occured <= 1) {

                this.$(".error-nav").hide();

            } else {

                this.$(".error-nav").show();

            };

            if (this.is_last_error(this.current_error)) {

                this.$(".show-next").hide();

            } else {

                this.$(".show-next").show();

            }

            if (this.is_first_error(this.current_error)) {

                this.$(".show-prev").hide();

            } else {

                this.$(".show-prev").show();

            }

        },

        show_next_error: function() {

        },

        show_prev_error: function() {

        },

        display_error: function(stack_key) {

            var err = this.error_stack[stack_key];

            var ns = err[0], code = err[1], message = err[2], type = err[3], details = err[4], error_options = err[5]

            this.error_options = {'allow_report': true, 'allow_reload': true, 

                'extra_details': {}, 'non_critical': false, 

                'allow_details': false,

                'allow_close': true };

            if (error_options) {

                this.error_options = _.extend(this.error_options, error_options);

            }

            this.code = code;

            this.ns = ns;

            this.type = type;

            this.details = details ? (details.toString ? details.toString() : details) : undefined;

            this.message = message;

            this.title = error_options.title || undefined;

            this.update_details();

            if (error_options.non_critical) {

                this.el.addClass("non-critical");

                this.error_options.allow_details = false;

            } else {

                this.el.removeClass("non-critical");

                this.error_options.allow_details = true;

            }

            if (APP_DEBUG) {

                this.error_options.allow_details = true;

            }

            this.$(".actions .show-details").click();

            this.$(".error-details").hide();

            this.$(".key.details").click();

            this.$(".error-more-details").hide();

        },

        update_details: function() {

            var title = "Application error";

            if (this.ns && this.type) {

                title = this.title || this.type + " Error";

            }

            this.$(".overlay-header .title").text(title);

            this.$(".error-code").text(this.code || "");

            this.$(".error-type").text(this.type || "");

            this.$(".error-module").text(this.ns || "");

            this.$(".message p").text(this.message || "");

            this.$(".error-more-details p").html($("<pre />", {text:this.details}) || "no info");

            this.$(".extra-details").remove();

            _.each(this.error_options.extra_details, function(value, key){

                var opt = $(('<span class="extra-details key">{0}</span>' +

                            '<span class="extra-details value">{1}</span>').format(key, value))

                this.$(".value.error-type").after(opt);

            })

        },

        beforeOpen: function() {

            this.$(".error-details").hide();

            this.$(".key.details").addClass("expand");

            this.$(".show-details").show();

            this.$(".hide-details").hide();

            if (this.error_options.allow_details) {

                this.$(".show-details").show();

            } else {

                this.$(".show-details").hide();

            }

            if (this.error_options.allow_report) {

                this.$(".report-error").show();

            } else {

                this.$(".report-error").hide();

            }

            if (this.error_options.allow_reload) {

                this.$(".reload-app").show();

            } else {

                this.$(".reload-app").hide();

            }

            if (this.error_options.allow_close) {

                this.$(".closeme").show();

            } else {

                this.$(".closeme").hide();

            }

        },

        onOpen: function() {

            this.displaying_error = true;

            var self = this;

            this.$(".closeme").unbind("click");

            this.$(".closeme").bind("click", function(){

                self.hide("reset");

            })

        },

        hide: function(reset_state) {

            if (reset_state === "reset") {

                // delay reset error state for fade out

                window.setTimeout(_.bind(function(){

                    this.displaying_error = false;

                    this.error_stack = {};

                    snf.api.trigger("reset");

                }, this), 500);

            } else {

                this.displaying_error = false;

            }

            views.ErrorView.__super__.hide.apply(this);

        },

        onClose: function(reset_state) {

            this.trigger("close", this);

        }

    });

})(this);