/**
 *    FileMenuPanels.js
 *
 *    Contains views for menu 'File'
 *
 *    Created by Maxim Kadushkin on 20 February 2014
 *    Copyright (c) 2014 Ascensio System SIA. All rights reserved.
 *
 */

define([
    'common/main/lib/view/DocumentAccessDialog',
    'common/main/lib/component/CheckBox'
], function () {
    'use strict';

    !PE.Views.FileMenuPanels && (PE.Views.FileMenuPanels = {});

    PE.Views.FileMenuPanels.ViewSaveAs = Common.UI.BaseView.extend({
        el: '#panel-saveas',
        menu: undefined,

        formats: [[
            {name: 'PDF',   imgCls: 'pdf',   type: c_oAscFileType.PDF},
            {name: 'PPTX',   imgCls: 'pptx',   type: c_oAscFileType.PPTX}
        ]],


        template: _.template([
            '<table><tbody>',
                '<% _.each(rows, function(row) { %>',
                    '<tr>',
                        '<% _.each(row, function(item) { %>',
                            '<td><span class="btn-doc-format <%= item.imgCls %>" /></td>',
                        '<% }) %>',
                    '</tr>',
                '<% }) %>',
            '</tbody></table>'
        ].join('')),

        initialize: function(options) {
            Common.UI.BaseView.prototype.initialize.call(this,arguments);

            this.menu = options.menu;
        },

        render: function() {
            $(this.el).html(this.template({rows:this.formats}));
            $('.btn-doc-format',this.el).on('click', _.bind(this.onFormatClick,this));

            if (_.isUndefined(this.scroller)) {
                this.scroller = new Common.UI.Scroller({
                    el: $(this.el),
                    suppressScrollX: true
                });
            }

            this.flatFormats = _.flatten(this.formats);
            return this;
        },

        onFormatClick: function(e) {
            var format = /\s(\w+)/.exec(e.currentTarget.className);
            if (format) {
                format = format[1];
                var item = _.findWhere(this.flatFormats, {imgCls: format});

                if (item && this.menu) {
                    this.menu.fireEvent('saveas:format', [this.menu, item.type]);
                }
            }
        }
    });

    PE.Views.FileMenuPanels.Settings = Common.UI.BaseView.extend(_.extend({
        el: '#panel-settings',
        menu: undefined,

        template: _.template([
            '<table><tbody>',
                '<tr class="edit">',
                    '<td class="left"><label><%= scope.txtInput %></label></td>',
                    '<td class="right"><div id="fms-chb-input-mode"/></td>',
                '</tr>','<tr class="divider edit"></tr>',
                '<tr>',
                    '<td class="left"><label><%= scope.textAlignGuides %></label></td>',
                    '<td class="right"><span id="fms-chb-align-guides" /></td>',
                '</tr>','<tr class="divider"></tr>',
                '<tr class="autosave">',
                    '<td class="left"><label id="fms-lbl-autosave"><%= scope.textAutoSave %></label></td>',
                    '<td class="right"><span id="fms-chb-autosave" /></td>',
                '</tr>','<tr class="divider autosave"></tr>',
                /** coauthoring begin **/
                '<tr class="coauth changes">',
                    '<td class="left"><label><%= scope.strCoAuthMode %></label></td>',
                    '<td class="right">',
                        '<div><div id="fms-cmb-coauth-mode" style="display: inline-block; margin-right: 15px;"/>',
                        '<label id="fms-lbl-coauth-mode" style="vertical-align: middle;"><%= scope.strCoAuthModeDescFast %></label></div></td>',
                '</tr>','<tr class="divider coauth changes"></tr>',
                /** coauthoring end **/
                '<tr>',
                    '<td class="left"><label><%= scope.strZoom %></label></td>',
                    '<td class="right"><div id="fms-cmb-zoom" class="input-group-nr" /></td>',
                '</tr>','<tr class="divider"></tr>',
                '<tr class="edit">',
                    '<td class="left"><label><%= scope.strUnit %></label></td>',
                    '<td class="right"><span id="fms-cmb-unit" /></td>',
                '</tr>','<tr class="divider edit"></tr>',
                '<tr>',
                    '<td class="left"></td>',
                    '<td class="right"><button id="fms-btn-apply" class="btn normal dlg-btn primary"><%= scope.okButtonText %></button></td>',
                '</tr>',
            '</tbody></table>'
        ].join('')),

        initialize: function(options) {
            Common.UI.BaseView.prototype.initialize.call(this,arguments);

            this.menu = options.menu;
        },

        render: function() {
            $(this.el).html(this.template({scope: this}));

            this.chInputMode = new Common.UI.CheckBox({
                el: $('#fms-chb-input-mode'),
                labelText: this.strInputMode
            });

            this.cmbZoom = new Common.UI.ComboBox({
                el          : $('#fms-cmb-zoom'),
                style       : 'width: 160px;',
                editable    : false,
                cls         : 'input-group-nr',
                data        : [
                    { value: -1, displayValue: this.txtFitSlide },
                    { value: 50, displayValue: "50%" },
                    { value: 60, displayValue: "60%" },
                    { value: 70, displayValue: "70%" },
                    { value: 80, displayValue: "80%" },
                    { value: 90, displayValue: "90%" },
                    { value: 100, displayValue: "100%" },
                    { value: 110, displayValue: "110%" },
                    { value: 120, displayValue: "120%" },
                    { value: 150, displayValue: "150%" },
                    { value: 175, displayValue: "175%" },
                    { value: 200, displayValue: "200%" }
                ]
            });

            /** coauthoring begin **/
            this.cmbCoAuthMode = new Common.UI.ComboBox({
                el          : $('#fms-cmb-coauth-mode'),
                style       : 'width: 160px;',
                editable    : false,
                cls         : 'input-group-nr',
                data        : [
                    { value: 1, displayValue: this.strFast, descValue: this.strCoAuthModeDescFast},
                    { value: 0, displayValue: this.strStrict, descValue: this.strCoAuthModeDescStrict }
                ]
            }).on('selected', _.bind(function(combo, record) {
                if (record.value == 1 && (this.chAutosave.getValue()!=='checked'))
                    this.chAutosave.setValue(1);
                this.lblCoAuthMode.text(record.descValue);
            }, this));

            this.lblCoAuthMode = $('#fms-lbl-coauth-mode');
            /** coauthoring end **/

            this.chAutosave = new Common.UI.CheckBox({
                el: $('#fms-chb-autosave'),
                labelText: this.strAutosave
            }).on('change', _.bind(function(field, newValue, oldValue, eOpts){
                if (field.getValue()!=='checked' && this.cmbCoAuthMode.getValue()) {
                    this.cmbCoAuthMode.setValue(0);
                    this.lblCoAuthMode.text(this.strCoAuthModeDescStrict);
                }
            }, this));
            this.lblAutosave = $('#fms-lbl-autosave');

            this.chAlignGuides = new Common.UI.CheckBox({
                el: $('#fms-chb-align-guides'),
                labelText: this.strAlignGuides
            });

            this.cmbUnit = new Common.UI.ComboBox({
                el          : $('#fms-cmb-unit'),
                style       : 'width: 160px;',
                editable    : false,
                cls         : 'input-group-nr',
                data        : [
                    { value: Common.Utils.Metric.c_MetricUnits['cm'], displayValue: this.txtCm },
                    { value: Common.Utils.Metric.c_MetricUnits['pt'], displayValue: this.txtPt }
                ]
            });

            this.btnApply = new Common.UI.Button({
                el: '#fms-btn-apply'
            });

            this.btnApply.on('click', _.bind(this.applySettings, this));

            if (_.isUndefined(this.scroller)) {
                this.scroller = new Common.UI.Scroller({
                    el: $(this.el),
                    suppressScrollX: true
                });
            }

            return this;
        },

        show: function() {
            Common.UI.BaseView.prototype.show.call(this,arguments);

            this.updateSettings();
        },

        setMode: function(mode) {
            this.mode = mode;
            $('tr.edit', this.el)[mode.isEdit?'show':'hide']();
            $('tr.autosave', this.el)[mode.isEdit ? 'show' : 'hide']();
            if (this.mode.isDesktopApp && this.mode.isOffline) {
                this.chAutosave.setCaption(this.strAutoRecover);
                this.lblAutosave.text(this.textAutoRecover);
            }
            /** coauthoring begin **/
            $('tr.coauth.changes', this.el)[mode.isEdit && mode.canLicense && !mode.isOffline ? 'show' : 'hide']();
            /** coauthoring end **/
        },

        updateSettings: function() {
            var value = Common.localStorage.getItem("pe-settings-inputmode");
            this.chInputMode.setValue(value!==null && parseInt(value) == 1);

            value = Common.localStorage.getItem("pe-settings-zoom");
            value = (value!==null) ? parseInt(value) : -1;
            var item = this.cmbZoom.store.findWhere({value: value});
            this.cmbZoom.setValue(item ? parseInt(item.get('value')) : 100);

            /** coauthoring begin **/
            value = Common.localStorage.getItem("pe-settings-coauthmode");
            var fast_coauth = (value===null || parseInt(value) == 1);

            item = this.cmbCoAuthMode.store.findWhere({value: parseInt(value)});
            this.cmbCoAuthMode.setValue(item ? item.get('value') : 1);
            this.lblCoAuthMode.text(item ? item.get('descValue') : this.strCoAuthModeDescFast);
            /** coauthoring end **/

            value = Common.localStorage.getItem("pe-settings-unit");
            item = this.cmbUnit.store.findWhere({value: parseInt(value)});
            this.cmbUnit.setValue(item ? parseInt(item.get('value')) : 0);
            this._oldUnits = this.cmbUnit.getValue();

            value = Common.localStorage.getItem("pe-settings-autosave");
            this.chAutosave.setValue(fast_coauth);

            value = Common.localStorage.getItem("pe-settings-showsnaplines");
            this.chAlignGuides.setValue(value===null || parseInt(value) == 1);
        },

        applySettings: function() {
            Common.localStorage.setItem("pe-settings-inputmode", this.chInputMode.isChecked() ? 1 : 0);
            Common.localStorage.setItem("pe-settings-zoom", this.cmbZoom.getValue());
            /** coauthoring begin **/
            if (this.mode.isEdit && this.mode.canLicense && !this.mode.isOffline) {
                Common.localStorage.setItem("pe-settings-coauthmode", this.cmbCoAuthMode.getValue());
            }
            /** coauthoring end **/
            Common.localStorage.setItem("pe-settings-unit", this.cmbUnit.getValue());
            Common.localStorage.setItem("pe-settings-autosave", this.chAutosave.isChecked() ? 1 : 0);
            Common.localStorage.setItem("pe-settings-showsnaplines", this.chAlignGuides.isChecked() ? 1 : 0);
            Common.localStorage.save();

            if (this.menu) {
                this.menu.fireEvent('settings:apply', [this.menu]);

                if (this._oldUnits !== this.cmbUnit.getValue())
                    Common.NotificationCenter.trigger('settings:unitschanged', this);
            }
        },

        strInputMode:   'Turn on hieroglyphs',
        strZoom: 'Default Zoom Value',
        okButtonText: 'Apply',
        txtFitSlide: 'Fit Slide',
        txtInput: 'Alternate Input',
        strUnit: 'Unit of Measurement',
        txtCm: 'Centimeter',
        txtPt: 'Point',
        textAutoSave: 'Autosave',
        strAutosave: 'Turn on autosave',
        /** coauthoring begin **/
        strShowChanges: 'Realtime Collaboration Changes',
        /** coauthoring end **/
        txtAll: 'View All',
        txtLast: 'View Last',
        textAlignGuides: 'Alignment Guides',
        strAlignGuides: 'Turn on alignment guides',
        strCoAuthMode: 'Co-editing mode',
        strCoAuthModeDescFast: 'Other users will see your changes at once',
        strCoAuthModeDescStrict: 'You will need to accept changes before you can see them',
        strFast: 'Fast',
        strStrict: 'Strict',
        textAutoRecover: 'Autorecover',
        strAutoRecover: 'Turn on autorecover'
    }, PE.Views.FileMenuPanels.Settings || {}));

    PE.Views.FileMenuPanels.RecentFiles = Common.UI.BaseView.extend({
        el: '#panel-recentfiles',
        menu: undefined,

        template: _.template([
            '<div id="id-recent-view" style="margin: 20px 0;"></div>'
        ].join('')),

        initialize: function(options) {
            Common.UI.BaseView.prototype.initialize.call(this,arguments);

            this.menu = options.menu;
            this.recent = options.recent;
        },

        render: function() {
            $(this.el).html(this.template());

            this.viewRecentPicker = new Common.UI.DataView({
                el: $('#id-recent-view'),
                store: new Common.UI.DataViewStore(this.recent),
                itemTemplate: _.template([
                    '<div class="recent-wrap">',
                        '<div class="recent-icon"></div>',
                        '<div class="file-name"><%= Common.Utils.String.htmlEncode(title) %></div>',
                        '<div class="file-info"><%= Common.Utils.String.htmlEncode(folder) %></div>',
                    '</div>'
                ].join(''))
            });

            this.viewRecentPicker.on('item:click', _.bind(this.onRecentFileClick, this));

            if (_.isUndefined(this.scroller)) {
                this.scroller = new Common.UI.Scroller({
                    el: $(this.el),
                    suppressScrollX: true
                });
            }

            return this;
        },

        onRecentFileClick: function(view, itemview, record){
            if ( this.menu )
                this.menu.fireEvent('recent:open', [this.menu, record.get('url')]);
        }
    });

    PE.Views.FileMenuPanels.CreateNew = Common.UI.BaseView.extend(_.extend({
        el: '#panel-createnew',
        menu: undefined,

        events: function() {
            return {
                'click .blank-document-btn':_.bind(this._onBlankDocument, this),
                'click .thumb-list .thumb-wrap': _.bind(this._onDocumentTemplate, this)
            };
        },

        template: _.template([
            '<h3 style="margin-top: 20px;"><%= scope.fromBlankText %></h3><hr noshade />',
            '<div class="blank-document">',
                '<div class="blank-document-btn"></div>',
                '<div class="blank-document-info">',
                    '<h3><%= scope.newDocumentText %></h3>',
                    '<%= scope.newDescriptionText %>',
                '</div>',
            '</div>',
            '<h3><%= scope.fromTemplateText %></h3><hr noshade />',
            '<div class="thumb-list">',
                '<% _.each(docs, function(item) { %>',
                    '<div class="thumb-wrap" template="<%= item.url %>">',
                        '<div class="thumb"<% if (!_.isEmpty(item.icon)) { %> style="background-image: url(<%= item.icon %>);" <% } %> />',
                        '<div class="title"><%= item.name %></div>',
                    '</div>',
                '<% }) %>',
            '</div>'
        ].join('')),

        initialize: function(options) {
            Common.UI.BaseView.prototype.initialize.call(this,arguments);

            this.menu = options.menu;
        },

        render: function() {
            $(this.el).html(this.template({
                scope: this,
                docs: this.options[0].docs
            }));

            if (_.isUndefined(this.scroller)) {
                this.scroller = new Common.UI.Scroller({
                    el: $(this.el),
                    suppressScrollX: true
                });
            }

            return this;
        },

        _onBlankDocument: function() {
            if ( this.menu )
                this.menu.fireEvent('create:new', [this.menu, 'blank']);
        },

        _onDocumentTemplate: function(e) {
            if ( this.menu )
                this.menu.fireEvent('create:new', [this.menu, e.currentTarget.attributes['template'].value]);
        },

        fromBlankText       : 'From Blank',
        newDocumentText     : 'New Presentation',
        newDescriptionText  : 'Create a new blank presentation which you will be able to style and format after it is created during the editing. Or choose one of the templates to start a document of a certain type or purpose where some styles have already been pre-applied.',
        fromTemplateText    : 'From Template',
        noTemplatesText     : 'There are no templates'
    }, PE.Views.FileMenuPanels.CreateNew || {}));

    PE.Views.FileMenuPanels.DocumentInfo = Common.UI.BaseView.extend(_.extend({
        el: '#panel-info',
        menu: undefined,

        initialize: function(options) {
            Common.UI.BaseView.prototype.initialize.call(this,arguments);
            this.rendered = false;

            this.template = _.template([
                '<table class="main">',
                    '<tr>',
                        '<td class="left"><label>' + this.txtTitle + '</label></td>',
                        '<td class="right"><label id="id-info-title">-</label></td>',
                    '</tr>',
                    '<tr class="author">',
                        '<td class="left"><label>' + this.txtAuthor + '</label></td>',
                        '<td class="right"><span class="userLink" id="id-info-author">-</span></td>',
                    '</tr>',
                    '<tr class="placement">',
                        '<td class="left"><label>' + this.txtPlacement + '</label></td>',
                        '<td class="right"><label id="id-info-placement">-</label></td>',
                    '</tr>',
                    '<tr class="date">',
                        '<td class="left"><label>' + this.txtDate + '</label></td>',
                        '<td class="right"><label id="id-info-date">-</label></td>',
                    '</tr>',
                    '<tr class="divider date"></tr>',
                '</table>'
            ].join(''));

            this.menu = options.menu;
        },

        render: function() {
            $(this.el).html(this.template());

            this.lblTitle = $('#id-info-title');
            this.lblPlacement = $('#id-info-placement');
            this.lblDate = $('#id-info-date');
            this.lblAuthor = $('#id-info-author');

            this.rendered = true;

            this.updateInfo(this.doc);

            if (_.isUndefined(this.scroller)) {
                this.scroller = new Common.UI.Scroller({
                    el: $(this.el),
                    suppressScrollX: true
                });
            }

            return this;
        },

        show: function() {
            Common.UI.BaseView.prototype.show.call(this,arguments);
        },

        hide: function() {
            Common.UI.BaseView.prototype.hide.call(this,arguments);
        },

        updateInfo: function(doc) {
            this.doc = doc;
            if (!this.rendered)
                return;

            doc = doc || {};
            this.lblTitle.text((doc.title) ? doc.title : '-');

            if (doc.info) {
                if (doc.info.author)
                    this.lblAuthor.text(doc.info.author);
                this._ShowHideInfoItem('author', doc.info.author!==undefined && doc.info.author!==null);
                if (doc.info.created )
                    this.lblDate.text( doc.info.created );
                this._ShowHideInfoItem('date', doc.info.created!==undefined && doc.info.created!==null);
                if (doc.info.folder )
                    this.lblPlacement.text( doc.info.folder );
                this._ShowHideInfoItem('placement', doc.info.folder!==undefined && doc.info.folder!==null);
            } else
                this._ShowHideDocInfo(false);
        },

        _ShowHideInfoItem: function(cls, visible) {
            $('tr.'+cls, this.el)[visible?'show':'hide']();
        },

        _ShowHideDocInfo: function(visible) {
            this._ShowHideInfoItem('date', visible);
            this._ShowHideInfoItem('placement', visible);
            this._ShowHideInfoItem('author', visible);
        },

        setMode: function(mode) {
            return this;
        },

        txtTitle: 'Document Title',
        txtAuthor: 'Author',
        txtPlacement: 'Placement',
        txtDate: 'Creation Date'
    }, PE.Views.FileMenuPanels.DocumentInfo || {}));

    PE.Views.FileMenuPanels.DocumentRights = Common.UI.BaseView.extend(_.extend({
        el: '#panel-rights',
        menu: undefined,

        initialize: function(options) {
            Common.UI.BaseView.prototype.initialize.call(this,arguments);
            this.rendered = false;

            this.template = _.template([
                '<table class="main">',
                    '<tr class="rights">',
                        '<td class="left" style="vertical-align: top;"><label>' + this.txtRights + '</label></td>',
                        '<td class="right"><div id="id-info-rights"></div></td>',
                    '</tr>',
                    '<tr class="edit-rights">',
                        '<td class="left"></td><td class="right"><button id="id-info-btn-edit" class="btn normal dlg-btn primary custom" style="margin-right: 10px;">' + this.txtBtnAccessRights + '</button></td>',
                    '</tr>',
                '</table>'
            ].join(''));

            this.templateRights = _.template([
                '<table>',
                    '<% _.each(users, function(item) { %>',
                    '<tr>',
                        '<td><span class="userLink <% if (item.isLink) { %>sharedLink<% } %>"></span><span><%= Common.Utils.String.htmlEncode(item.user) %></span></td>',
                        '<td><%= Common.Utils.String.htmlEncode(item.permissions) %></td>',
                    '</tr>',
                    '<% }); %>',
                '</table>'
            ].join(''));

            this.menu = options.menu;
        },

        render: function() {
            $(this.el).html(this.template());

            this.cntRights = $('#id-info-rights');
            this.btnEditRights = new Common.UI.Button({
                el: '#id-info-btn-edit'
            });
            this.btnEditRights.on('click', _.bind(this.changeAccessRights, this));

            this.rendered = true;

            this.updateInfo(this.doc);

            if (_.isUndefined(this.scroller)) {
                this.scroller = new Common.UI.Scroller({
                    el: $(this.el),
                    suppressScrollX: true
                });
            }

            return this;
        },

        show: function() {
            Common.UI.BaseView.prototype.show.call(this,arguments);
        },

        hide: function() {
            Common.UI.BaseView.prototype.hide.call(this,arguments);
        },

        updateInfo: function(doc) {
            this.doc = doc;
            if (!this.rendered)
                return;

            doc = doc || {};

            if (doc.info) {
                if (doc.info.sharingSettings)
                    this.cntRights.html(this.templateRights({users: doc.info.sharingSettings}));
                this._ShowHideInfoItem('rights', doc.info.sharingSettings!==undefined && doc.info.sharingSettings!==null && doc.info.sharingSettings.length>0);
                this._ShowHideInfoItem('edit-rights', !!this.sharingSettingsUrl && this.sharingSettingsUrl.length && this._readonlyRights!==true);
            } else
                this._ShowHideDocInfo(false);
        },

        _ShowHideInfoItem: function(cls, visible) {
            $('tr.'+cls, this.el)[visible?'show':'hide']();
        },

        _ShowHideDocInfo: function(visible) {
            this._ShowHideInfoItem('rights', visible);
            this._ShowHideInfoItem('edit-rights', visible);
        },

        setMode: function(mode) {
            this.sharingSettingsUrl = mode.sharingSettingsUrl;
            return this;
        },

        changeAccessRights: function(btn,event,opts) {
            if (this._docAccessDlg) return;

            var me = this;
            me._docAccessDlg = new Common.Views.DocumentAccessDialog({
                settingsurl: this.sharingSettingsUrl
            });
            me._docAccessDlg.on('accessrights', function(obj, rights){
                me.doc.info.sharingSettings = rights;
                me._ShowHideInfoItem('rights', me.doc.info.sharingSettings!==undefined && me.doc.info.sharingSettings!==null && me.doc.info.sharingSettings.length>0);
                me.cntRights.html(me.templateRights({users: me.doc.info.sharingSettings}));
            }).on('close', function(obj){
                me._docAccessDlg = undefined;
            });

            me._docAccessDlg.show();
        },

        onLostEditRights: function() {
            this._readonlyRights = true;
            if (!this.rendered)
                return;

            this._ShowHideInfoItem('edit-rights', false);
        },

        txtRights: 'Persons who have rights',
        txtBtnAccessRights: 'Change access rights'
    }, PE.Views.FileMenuPanels.DocumentRights || {}));

    PE.Views.FileMenuPanels.Help = Common.UI.BaseView.extend({
        el: '#panel-help',
        menu: undefined,

        template: _.template([
            '<div style="width:100%; height:100%; position: relative;">',
                '<div id="id-help-contents" style="position: absolute; width:200px; top: 0; bottom: 0;" class="no-padding"></div>',
                '<div id="id-help-frame" style="position: absolute; left: 200px; top: 0; right: 0; bottom: 0;" class="no-padding"></div>',
            '</div>'
        ].join('')),

        initialize: function(options) {
            Common.UI.BaseView.prototype.initialize.call(this,arguments);

            this.menu = options.menu;
            this.urlPref = 'resources/help/en/';

            this.en_data = [
                {src: "UsageInstructions/SetPageParameters.htm", name: "Set page parameters", headername: "Usage Instructions"},
                {src: "UsageInstructions/CopyPasteUndoRedo.htm", name: "Copy/paste text passages, undo/redo your actions"},
                {src: "UsageInstructions/AlignText.htm", name: "Align your text in a line or paragraph"},
                {src: "UsageInstructions/LineSpacing.htm", name: "Set paragraph line spacing"},
                {src: "UsageInstructions/CopyClearFormatting.htm", name: "Copy/clear text formatting"},
                {src: "UsageInstructions/CreateLists.htm", name: "Create lists"},
                {src: "UsageInstructions/InsertImages.htm", name: "Insert images"},
                {src: "UsageInstructions/ViewDocInfo.htm", name: "View document information"},
                {src: "UsageInstructions/SavePrintDownload.htm", name: "Save/print/download your document"},
                {src: "UsageInstructions/OpenCreateNew.htm", name: "Create a new document or open an existing one"},
                {src: "HelpfulHints/About.htm", name: "About ONLYOFFICE Document Editor", headername: "Helpful Hints"},
                {src: "HelpfulHints/SupportedFormats.htm", name: "Supported Formats of Electronic Documents"},
                {src: "HelpfulHints/Navigation.htm", name: "Navigation through Your Document"},
                {src: "HelpfulHints/Search.htm", name: "Search Function"},
                {src: "HelpfulHints/KeyboardShortcuts.htm", name: "Keyboard Shortcuts"}
            ];

            if (Common.Utils.isIE) {
                window.onhelp = function () { return false; }
            }
        },

        render: function() {
            var me = this;
            $(this.el).html(this.template());

            this.viewHelpPicker = new Common.UI.DataView({
                el: $('#id-help-contents'),
                store: new Common.UI.DataViewStore([]),
                keyMoveDirection: 'vertical',
                itemTemplate: _.template([
                    '<div id="<%= id %>" class="help-item-wrap">',
                        '<div class="caption"><%= name %></div>',
                    '</div>'
                ].join(''))
            });
            this.viewHelpPicker.on('item:add', function(dataview, itemview, record) {
                if (record.has('headername')) {
                    $(itemview.el).before('<div class="header-name">' + record.get('headername') + '</div>');
                }
            });

            this.viewHelpPicker.on('item:select', function(dataview, itemview, record) {
                me.iFrame.src = me.urlPref + record.get('src');
            });

            this.iFrame = document.createElement('iframe');

            this.iFrame.src = "";
            this.iFrame.align = "top";
            this.iFrame.frameBorder = "0";
            this.iFrame.width = "100%";
            this.iFrame.height = "100%";
            Common.Gateway.on('internalcommand', function(data) {
                if (data.type == 'help:hyperlink') {
                    var src = data.data;
                    var rec = me.viewHelpPicker.store.find(function(record){
                        return (src.indexOf(record.get('src'))>0);
                    });
                    if (rec) {
                        me.viewHelpPicker.selectRecord(rec, true);
                        me.viewHelpPicker.scrollToRecord(rec);
                    }
                }
            });
            
            $('#id-help-frame').append(this.iFrame);

            return this;
        },

        setLangConfig: function(lang) {
            var me = this;
            var store = this.viewHelpPicker.store;
            if (lang) {
                lang = lang.split("-")[0];
                var config = {
                    dataType: 'json',
                    error: function () {
                        if ( me.urlPref.indexOf('resources/help/en/')<0 ) {
                            me.urlPref = 'resources/help/en/';
                            store.url = 'resources/help/en/Contents.json';
                            store.fetch(config);
                        } else {
                            me.urlPref = 'resources/help/en/';
                            store.reset(me.en_data);
                        }
                    },
                    success: function () {
                        var rec = store.at(0);
                        me.viewHelpPicker.selectRecord(rec);
                        me.iFrame.src = me.urlPref + rec.get('src');
                    }
                };
                store.url = 'resources/help/' + lang + '/Contents.json';
                store.fetch(config);
                this.urlPref = 'resources/help/' + lang + '/';
            }
        },

        show: function () {
            Common.UI.BaseView.prototype.show.call(this);
            if (!this._scrollerInited) {
                this.viewHelpPicker.scroller.update();
                this._scrollerInited = true;
            }
        }
    });
});