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/**
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 * A dialogue type designed to display an appropriate error when an error
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 * thrown in the Moodle codebase was reported during an AJAX request.
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 *
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 * @module moodle-core-notification
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 * @submodule moodle-core-notification-ajaxexception
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 */
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var AJAXEXCEPTION_NAME = 'Moodle AJAX exception',
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    AJAXEXCEPTION;
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/**
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 * Extends core Dialogue to show the exception dialogue.
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 *
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 * @param {Object} config Object literal specifying the dialogue configuration properties.
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 * @constructor
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 * @class M.core.ajaxException
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 * @extends M.core.dialogue
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 */
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AJAXEXCEPTION = function(config) {
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    config.name = config.name || M.util.get_string('error', 'moodle');
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    config.closeButton = true;
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    AJAXEXCEPTION.superclass.constructor.apply(this, [config]);
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};
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Y.extend(AJAXEXCEPTION, M.core.notification.info, {
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    _keypress: null,
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    initializer: function(config) {
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        var content,
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            self = this,
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            delay = this.get('hideTimeoutDelay'),
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            labelsep = M.util.get_string('labelsep', 'langconfig');
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        this.get(BASE).addClass('moodle-dialogue-exception');
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        this.setStdModContent(Y.WidgetStdMod.HEADER,
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                '<h5 id="moodle-dialogue-' + this.get('COUNT') + '-wrap-header-text">'
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                    + Y.Escape.html(config.name) + '</h5>',
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                Y.WidgetStdMod.REPLACE);
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        content = Y.Node.create('<div class="moodle-ajaxexception" data-rel="fatalerror"></div>')
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                .append(Y.Node.create('<div class="moodle-exception-message">' + Y.Escape.html(this.get('error')) + '</div>'))
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                .append(Y.Node.create('<div class="moodle-exception-param hidden param-debuginfo"><label>' +
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                        M.util.get_string('url', 'moodle') + labelsep + '</label> ' +
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                        this.get('reproductionlink') + '</div>'))
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                .append(Y.Node.create('<div class="moodle-exception-param hidden param-debuginfo"><label>' +
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                        M.util.get_string('debuginfo', 'debug') + labelsep + '</label> ' +
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                        Y.Escape.html(this.get('debuginfo')) + '</div>'))
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                .append(Y.Node.create('<div class="moodle-exception-param hidden param-stacktrace"><label>' +
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                        M.util.get_string('stacktrace', 'debug') + labelsep + '</label> <pre>' +
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                        Y.Escape.html(this.get('stacktrace')) + '</pre></div>'));
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        if (M.cfg.developerdebug) {
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            content.all('.moodle-exception-param').removeClass('hidden');
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        }
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        this.setStdModContent(Y.WidgetStdMod.BODY, content, Y.WidgetStdMod.REPLACE);
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        if (delay) {
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            this._hideTimeout = setTimeout(function() {
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                self.hide();
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            }, delay);
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        }
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        this.after('visibleChange', this.visibilityChanged, this);
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        this._keypress = Y.on('key', this.hide, window, 'down:13, 27', this);
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        this.centerDialogue();
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    },
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    visibilityChanged: function(e) {
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        if (e.attrName === 'visible' && e.prevVal && !e.newVal) {
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            var self = this;
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            this._keypress.detach();
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            setTimeout(function() {
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                self.destroy();
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            }, 1000);
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        }
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    }
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}, {
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    NAME: AJAXEXCEPTION_NAME,
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    CSS_PREFIX: DIALOGUE_PREFIX,
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    ATTRS: {
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        /**
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         * The error message given in the exception.
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         *
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         * @attribute error
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         * @type String
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         * @default 'Unknown error'
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         * @optional
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         */
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        error: {
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            validator: Y.Lang.isString,
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            value: M.util.get_string('unknownerror', 'moodle')
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        },
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        /**
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         * Any additional debug information given in the exception.
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         *
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         * @attribute stacktrace
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         * @type String|null
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         * @default null
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         * @optional
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         */
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        debuginfo: {
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            value: null
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        },
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        /**
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         * The complete stack trace provided in the exception.
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         *
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         * @attribute stacktrace
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         * @type String|null
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         * @default null
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         * @optional
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         */
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        stacktrace: {
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            value: null
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        },
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        /**
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         * A link which may be used by support staff to replicate the issue.
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         *
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         * @attribute reproductionlink
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         * @type String
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         * @default null
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         * @optional
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         */
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        reproductionlink: {
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            setter: function(link) {
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                if (link !== null) {
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                    link = Y.Escape.html(link);
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                    link = '<a href="' + link + '">' + link.replace(M.cfg.wwwroot, '') + '</a>';
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                }
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                return link;
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            },
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            value: null
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        },
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        /**
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         * If set, the dialogue is hidden after the specified timeout period.
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         *
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         * @attribute hideTimeoutDelay
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         * @type Number
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         * @default null
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         * @optional
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         */
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        hideTimeoutDelay: {
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            validator: Y.Lang.isNumber,
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            value: null
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        }
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    }
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});
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M.core.ajaxException = AJAXEXCEPTION;