881 lines
30 KiB
JavaScript
881 lines
30 KiB
JavaScript
/* jslint node: true */
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'use strict';
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// ENiGMA½
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var MCIViewFactory = require('./mci_view_factory.js').MCIViewFactory;
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var menuUtil = require('./menu_util.js');
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var asset = require('./asset.js');
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var ansi = require('./ansi_term.js');
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// deps
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var events = require('events');
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var util = require('util');
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var assert = require('assert');
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var async = require('async');
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var _ = require('lodash');
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var paths = require('path');
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exports.ViewController = ViewController;
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var MCI_REGEXP = /([A-Z]{2})([0-9]{1,2})/;
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function ViewController(options) {
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assert(_.isObject(options));
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assert(_.isObject(options.client));
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events.EventEmitter.call(this);
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var self = this;
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this.client = options.client;
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this.views = {}; // map of ID -> view
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this.formId = options.formId || 0;
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this.mciViewFactory = new MCIViewFactory(this.client); // :TODO: can this not be a singleton?
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this.noInput = _.isBoolean(options.noInput) ? options.noInput : false;
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this.actionKeyMap = {};
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//
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// Small wrapper/proxy around handleAction() to ensure we do not allow
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// input/additional actions queued while performing an action
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//
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this.handleActionWrapper = function(formData, actionBlock, cb) {
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if(self.waitActionCompletion) {
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if(cb) {
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return cb(null);
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}
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return; // ignore until this is finished!
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}
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self.client.log.trace( { actionBlock }, 'Action match' );
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self.waitActionCompletion = true;
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menuUtil.handleAction(self.client, formData, actionBlock, (err) => {
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if(err) {
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// :TODO: What can we really do here?
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if('ALREADYTHERE' === err.reasonCode) {
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self.client.log.trace( err.reason );
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} else {
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self.client.log.warn( { err : err }, 'Error during handleAction()');
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}
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}
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self.waitActionCompletion = false;
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if(cb) {
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return cb(null);
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}
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});
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};
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this.clientKeyPressHandler = function(ch, key) {
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//
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// Process key presses treating form submit mapped keys special.
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// Everything else is forwarded on to the focused View, if any.
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//
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var actionForKey = key ? self.actionKeyMap[key.name] : self.actionKeyMap[ch];
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if(actionForKey) {
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if(_.isNumber(actionForKey.viewId)) {
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//
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// Key works on behalf of a view -- switch focus & submit
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//
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self.switchFocus(actionForKey.viewId);
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self.submitForm(key);
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} else if(_.isString(actionForKey.action)) {
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const formData = self.getFocusedView() ? self.getFormData() : { };
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self.handleActionWrapper(
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Object.assign( { ch : ch, key : key }, formData ), // formData + key info
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actionForKey); // actionBlock
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}
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} else {
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if(self.focusedView && self.focusedView.acceptsInput) {
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self.focusedView.onKeyPress(ch, key);
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}
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}
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};
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this.viewActionListener = function(action, key) {
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switch(action) {
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case 'next' :
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self.emit('action', { view : this, action : action, key : key });
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self.nextFocus();
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break;
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case 'accept' :
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if(self.focusedView && self.focusedView.submit) {
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// :TODO: need to do validation here!!!
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var focusedView = self.focusedView;
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self.validateView(focusedView, function validated(err, newFocusedViewId) {
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if(err) {
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var newFocusedView = self.getView(newFocusedViewId) || focusedView;
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self.setViewFocusWithEvents(newFocusedView, true);
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} else {
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self.submitForm(key);
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}
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});
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//self.submitForm(key);
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} else {
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self.nextFocus();
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}
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break;
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}
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};
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this.submitForm = function(key) {
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self.emit('submit', this.getFormData(key));
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};
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this.getLogFriendlyFormData = function(formData) {
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var safeFormData = _.cloneDeep(formData);
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if(safeFormData.value.password) {
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safeFormData.value.password = '*****';
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}
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if(safeFormData.value.passwordConfirm) {
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safeFormData.value.passwordConfirm = '*****';
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}
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return safeFormData;
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};
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this.switchFocusEvent = function(event, view) {
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if(self.emitSwitchFocus) {
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return;
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}
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self.emitSwitchFocus = true;
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self.emit(event, view);
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self.emitSwitchFocus = false;
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};
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this.createViewsFromMCI = function(mciMap, cb) {
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async.each(Object.keys(mciMap), (name, nextItem) => {
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const mci = mciMap[name];
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const view = self.mciViewFactory.createFromMCI(mci);
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if(view) {
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if(false === self.noInput) {
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view.on('action', self.viewActionListener);
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}
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self.addView(view);
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}
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return nextItem(null);
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},
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err => {
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self.setViewOrder();
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return cb(err);
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});
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};
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// :TODO: move this elsewhere
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this.setViewPropertiesFromMCIConf = function(view, conf) {
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var propAsset;
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var propValue;
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for(var propName in conf) {
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propAsset = asset.getViewPropertyAsset(conf[propName]);
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if(propAsset) {
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switch(propAsset.type) {
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case 'config' :
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propValue = asset.resolveConfigAsset(conf[propName]);
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break;
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case 'sysStat' :
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propValue = asset.resolveSystemStatAsset(conf[propName]);
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break;
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// :TODO: handle @art (e.g. text : @art ...)
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case 'method' :
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case 'systemMethod' :
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if('validate' === propName) {
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// :TODO: handle propAsset.location for @method script specification
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if('systemMethod' === propAsset.type) {
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// :TODO: implementation validation @systemMethod handling!
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var methodModule = require(paths.join(__dirname, 'system_view_validate.js'));
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if(_.isFunction(methodModule[propAsset.asset])) {
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propValue = methodModule[propAsset.asset];
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}
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} else {
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if(_.isFunction(self.client.currentMenuModule.menuMethods[propAsset.asset])) {
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propValue = self.client.currentMenuModule.menuMethods[propAsset.asset];
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}
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}
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} else {
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if(_.isString(propAsset.location)) {
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// :TODO: clean this code up!
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} else {
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if('systemMethod' === propAsset.type) {
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// :TODO:
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} else {
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// local to current module
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var currentModule = self.client.currentMenuModule;
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if(_.isFunction(currentModule.menuMethods[propAsset.asset])) {
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// :TODO: Fix formData & extraArgs... this all needs general processing
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propValue = currentModule.menuMethods[propAsset.asset]({}, {});//formData, conf.extraArgs);
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}
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}
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}
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}
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break;
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default :
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propValue = conf[propName];
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break;
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}
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} else {
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propValue = conf[propName];
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}
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if(!_.isUndefined(propValue)) {
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view.setPropertyValue(propName, propValue);
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}
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}
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};
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this.applyViewConfig = function(config, cb) {
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let highestId = 1;
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let submitId;
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let initialFocusId = 1;
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async.each(Object.keys(config.mci || {}), function entry(mci, nextItem) {
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const mciMatch = mci.match(MCI_REGEXP); // :TODO: How to handle auto-generated IDs????
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if(null === mciMatch) {
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self.client.log.warn( { mci : mci }, 'Unable to parse MCI code');
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return;
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}
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const viewId = parseInt(mciMatch[2]);
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assert(!isNaN(viewId), 'Cannot parse view ID: ' + mciMatch[2]); // shouldn't be possible with RegExp used
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if(viewId > highestId) {
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highestId = viewId;
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}
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const view = self.getView(viewId);
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if(!view) {
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self.client.log.warn( { viewId : viewId }, 'Cannot find view');
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nextItem(null);
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return;
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}
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const mciConf = config.mci[mci];
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self.setViewPropertiesFromMCIConf(view, mciConf);
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if(mciConf.focus) {
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initialFocusId = viewId;
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}
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if(true === view.submit) {
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submitId = viewId;
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}
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nextItem(null);
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},
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err => {
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// default to highest ID if no 'submit' entry present
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if(!submitId) {
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var highestIdView = self.getView(highestId);
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if(highestIdView) {
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highestIdView.submit = true;
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} else {
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self.client.log.warn( { highestId : highestId }, 'View does not exist');
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}
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}
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return cb(err, { initialFocusId : initialFocusId } );
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});
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};
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// method for comparing submitted form data to configuration entries
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this.actionBlockValueComparator = function(formValue, actionValue) {
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//
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// For a match to occur, one of the following must be true:
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//
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// * actionValue is a Object:
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// a) All key/values must exactly match
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// b) value is null; The key (view ID or "argName") must be present
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// in formValue. This is a wildcard/any match.
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// * actionValue is a Number: This represents a view ID that
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// must be present in formValue.
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// * actionValue is a string: This represents a view with
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// "argName" set that must be present in formValue.
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//
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if(_.isUndefined(actionValue)) {
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return false;
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}
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if(_.isNumber(actionValue) || _.isString(actionValue)) {
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if(_.isUndefined(formValue[actionValue])) {
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return false;
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}
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} else {
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/*
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:TODO: support:
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value: {
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someArgName: [ "key1", "key2", ... ],
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someOtherArg: [ "key1, ... ]
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}
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*/
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var actionValueKeys = Object.keys(actionValue);
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for(var i = 0; i < actionValueKeys.length; ++i) {
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var viewId = actionValueKeys[i];
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if(!_.has(formValue, viewId)) {
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return false;
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}
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if(null !== actionValue[viewId] && actionValue[viewId] !== formValue[viewId]) {
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return false;
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}
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}
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}
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return true;
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};
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if(!options.detached) {
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this.attachClientEvents();
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}
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this.setViewFocusWithEvents = function(view, focused) {
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if(!view || !view.acceptsFocus) {
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return;
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}
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if(focused) {
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self.switchFocusEvent('return', view);
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self.focusedView = view;
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} else {
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self.switchFocusEvent('leave', view);
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}
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view.setFocus(focused);
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};
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this.validateView = function(view, cb) {
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if(view && _.isFunction(view.validate)) {
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view.validate(view.getData(), function validateResult(err) {
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var viewValidationListener = self.client.currentMenuModule.menuMethods.viewValidationListener;
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if(_.isFunction(viewValidationListener)) {
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if(err) {
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err.view = view; // pass along the view that failed
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}
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viewValidationListener(err, function validationComplete(newViewFocusId) {
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cb(err, newViewFocusId);
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});
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} else {
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cb(err);
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}
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});
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} else {
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cb(null);
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}
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};
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}
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util.inherits(ViewController, events.EventEmitter);
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ViewController.prototype.attachClientEvents = function() {
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if(this.attached) {
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return;
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}
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var self = this;
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this.client.on('key press', this.clientKeyPressHandler);
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Object.keys(this.views).forEach(function vid(i) {
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// remove, then add to ensure we only have one listener
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self.views[i].removeListener('action', self.viewActionListener);
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self.views[i].on('action', self.viewActionListener);
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});
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this.attached = true;
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};
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ViewController.prototype.detachClientEvents = function() {
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if(!this.attached) {
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return;
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}
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this.client.removeListener('key press', this.clientKeyPressHandler);
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for(var id in this.views) {
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this.views[id].removeAllListeners();
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}
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this.attached = false;
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};
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ViewController.prototype.viewExists = function(id) {
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return id in this.views;
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};
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ViewController.prototype.addView = function(view) {
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assert(!this.viewExists(view.id), 'View with ID ' + view.id + ' already exists');
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this.views[view.id] = view;
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};
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ViewController.prototype.getView = function(id) {
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return this.views[id];
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};
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ViewController.prototype.hasView = function(id) {
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return this.getView(id) ? true : false;
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};
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ViewController.prototype.getViewsByMciCode = function(mciCode) {
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if(!Array.isArray(mciCode)) {
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mciCode = [ mciCode ];
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}
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const views = [];
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_.each(this.views, v => {
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if(mciCode.includes(v.mciCode)) {
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views.push(v);
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}
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});
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return views;
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};
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ViewController.prototype.getFocusedView = function() {
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return this.focusedView;
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};
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ViewController.prototype.setFocus = function(focused) {
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if(focused) {
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this.attachClientEvents();
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} else {
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this.detachClientEvents();
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}
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this.setViewFocusWithEvents(this.focusedView, focused);
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};
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ViewController.prototype.resetInitialFocus = function() {
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if(this.formInitialFocusId) {
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return this.switchFocus(this.formInitialFocusId);
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}
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};
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ViewController.prototype.switchFocus = function(id) {
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//
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// Perform focus switching validation now
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//
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var self = this;
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var focusedView = self.focusedView;
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self.validateView(focusedView, function validated(err, newFocusedViewId) {
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if(err) {
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var newFocusedView = self.getView(newFocusedViewId) || focusedView;
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self.setViewFocusWithEvents(newFocusedView, true);
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} else {
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self.attachClientEvents();
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// remove from old
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self.setViewFocusWithEvents(focusedView, false);
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// set to new
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self.setViewFocusWithEvents(self.getView(id), true);
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}
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});
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};
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ViewController.prototype.nextFocus = function() {
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let nextFocusView = this.focusedView ? this.focusedView : this.views[this.firstId];
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// find the next view that accepts focus
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while(nextFocusView && nextFocusView.nextId) {
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nextFocusView = this.getView(nextFocusView.nextId);
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if(!nextFocusView || nextFocusView.acceptsFocus) {
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break;
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}
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}
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if(nextFocusView && this.focusedView !== nextFocusView) {
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this.switchFocus(nextFocusView.id);
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}
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};
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ViewController.prototype.setViewOrder = function(order) {
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var viewIdOrder = order || [];
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if(0 === viewIdOrder.length) {
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for(var id in this.views) {
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if(this.views[id].acceptsFocus) {
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viewIdOrder.push(id);
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}
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}
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viewIdOrder.sort(function intSort(a, b) {
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return a - b;
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});
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}
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if(viewIdOrder.length > 0) {
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var count = viewIdOrder.length - 1;
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for(var i = 0; i < count; ++i) {
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this.views[viewIdOrder[i]].nextId = viewIdOrder[i + 1];
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}
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this.firstId = viewIdOrder[0];
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var lastId = viewIdOrder.length > 1 ? viewIdOrder[viewIdOrder.length - 1] : this.firstId;
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this.views[lastId].nextId = this.firstId;
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}
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};
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ViewController.prototype.redrawAll = function(initialFocusId) {
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this.client.term.rawWrite(ansi.hideCursor());
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for(var id in this.views) {
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if(initialFocusId === id) {
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continue; // will draw @ focus
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}
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this.views[id].redraw();
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}
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this.client.term.rawWrite(ansi.showCursor());
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};
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ViewController.prototype.loadFromPromptConfig = function(options, cb) {
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assert(_.isObject(options));
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assert(_.isObject(options.mciMap));
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var self = this;
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var promptConfig = _.isObject(options.config) ? options.config : self.client.currentMenuModule.menuConfig.promptConfig;
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var initialFocusId = 1; // default to first
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async.waterfall(
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[
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function createViewsFromMCI(callback) {
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self.createViewsFromMCI(options.mciMap, function viewsCreated(err) {
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callback(err);
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});
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},
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function applyViewConfiguration(callback) {
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if(_.isObject(promptConfig.mci)) {
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self.applyViewConfig(promptConfig, function configApplied(err, info) {
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initialFocusId = info.initialFocusId;
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callback(err);
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});
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} else {
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callback(null);
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}
|
|
},
|
|
function prepareFormSubmission(callback) {
|
|
if(false === self.noInput) {
|
|
|
|
self.on('submit', function promptSubmit(formData) {
|
|
self.client.log.trace( { formData }, 'Prompt submit');
|
|
|
|
const doSubmitNotify = () => {
|
|
if(options.submitNotify) {
|
|
options.submitNotify();
|
|
}
|
|
};
|
|
|
|
const handleIt = (fd, conf) => {
|
|
self.handleActionWrapper(fd, conf, () => {
|
|
doSubmitNotify();
|
|
});
|
|
};
|
|
|
|
if(_.isString(self.client.currentMenuModule.menuConfig.action)) {
|
|
handleIt(formData, self.client.currentMenuModule.menuConfig);
|
|
} else {
|
|
//
|
|
// Menus that reference prompts can have a special "submit" block without the
|
|
// hassle of by-form-id configurations, etc.
|
|
//
|
|
// "submit" : [
|
|
// { ... }
|
|
// ]
|
|
//
|
|
const menuConfig = self.client.currentMenuModule.menuConfig;
|
|
let submitConf;
|
|
if(Array.isArray(menuConfig.submit)) { // standalone prompts)) {
|
|
submitConf = menuConfig.submit;
|
|
} else {
|
|
// look for embedded prompt configurations - using their own form ID within the menu
|
|
submitConf =
|
|
_.get(menuConfig, [ 'form', formData.id, 'submit', formData.submitId ]) ||
|
|
_.get(menuConfig, [ 'form', formData.id, 'submit', '*' ]);
|
|
}
|
|
|
|
if(!Array.isArray(submitConf)) {
|
|
doSubmitNotify();
|
|
return self.client.log.debug('No configuration to handle submit');
|
|
}
|
|
|
|
// locate any matching action block
|
|
const actionBlock = submitConf.find(actionBlock => _.isEqualWith(formData.value, actionBlock.value, self.actionBlockValueComparator));
|
|
if(actionBlock) {
|
|
handleIt(formData, actionBlock);
|
|
} else {
|
|
doSubmitNotify();
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
callback(null);
|
|
},
|
|
function loadActionKeys(callback) {
|
|
if(!_.isObject(promptConfig) || !_.isArray(promptConfig.actionKeys)) {
|
|
return callback(null);
|
|
}
|
|
|
|
promptConfig.actionKeys.forEach(ak => {
|
|
//
|
|
// * 'keys' must be present and be an array of key names
|
|
// * If 'viewId' is present, key(s) will focus & submit on behalf
|
|
// of the specified view.
|
|
// * If 'action' is present, that action will be procesed when
|
|
// triggered by key(s)
|
|
//
|
|
// Ultimately, create a map of key -> { action block }
|
|
//
|
|
if(!_.isArray(ak.keys)) {
|
|
return;
|
|
}
|
|
|
|
ak.keys.forEach(kn => {
|
|
self.actionKeyMap[kn] = ak;
|
|
});
|
|
|
|
});
|
|
|
|
return callback(null);
|
|
},
|
|
function drawAllViews(callback) {
|
|
self.redrawAll(initialFocusId);
|
|
callback(null);
|
|
},
|
|
function setInitialViewFocus(callback) {
|
|
if(initialFocusId) {
|
|
self.switchFocus(initialFocusId);
|
|
}
|
|
callback(null);
|
|
}
|
|
],
|
|
function complete(err) {
|
|
cb(err);
|
|
}
|
|
);
|
|
};
|
|
|
|
ViewController.prototype.loadFromMenuConfig = function(options, cb) {
|
|
assert(_.isObject(options));
|
|
|
|
if(!_.isObject(options.mciMap)) {
|
|
cb(new Error('Missing option: mciMap'));
|
|
return;
|
|
}
|
|
|
|
var self = this;
|
|
var formIdKey = options.formId ? options.formId.toString() : '0';
|
|
this.formInitialFocusId = 1; // default to first
|
|
var formConfig;
|
|
|
|
// :TODO: honor options.withoutForm
|
|
|
|
async.waterfall(
|
|
[
|
|
function findMatchingFormConfig(callback) {
|
|
menuUtil.getFormConfigByIDAndMap(self.client.currentMenuModule.menuConfig, formIdKey, options.mciMap, function matchingConfig(err, fc) {
|
|
formConfig = fc;
|
|
|
|
if(err) {
|
|
// non-fatal
|
|
self.client.log.trace(
|
|
{ reason : err.message, mci : Object.keys(options.mciMap), formId : formIdKey },
|
|
'Unable to find matching form configuration');
|
|
}
|
|
|
|
callback(null);
|
|
});
|
|
},
|
|
function createViews(callback) {
|
|
self.createViewsFromMCI(options.mciMap, function viewsCreated(err) {
|
|
callback(err);
|
|
});
|
|
},
|
|
/*
|
|
function applyThemeCustomization(callback) {
|
|
formConfig = formConfig || {};
|
|
formConfig.mci = formConfig.mci || {};
|
|
//self.client.currentMenuModule.menuConfig.config = self.client.currentMenuModule.menuConfig.config || {};
|
|
|
|
//console.log('menu config.....');
|
|
//console.log(self.client.currentMenuModule.menuConfig)
|
|
|
|
menuUtil.applyMciThemeCustomization({
|
|
name : self.client.currentMenuModule.menuName,
|
|
type : 'menus',
|
|
client : self.client,
|
|
mci : formConfig.mci,
|
|
//config : self.client.currentMenuModule.menuConfig.config,
|
|
formId : formIdKey,
|
|
});
|
|
|
|
//console.log('after theme...')
|
|
//console.log(self.client.currentMenuModule.menuConfig.config)
|
|
|
|
callback(null);
|
|
},
|
|
*/
|
|
function applyViewConfiguration(callback) {
|
|
if(_.isObject(formConfig)) {
|
|
self.applyViewConfig(formConfig, function configApplied(err, info) {
|
|
self.formInitialFocusId = info.initialFocusId;
|
|
callback(err);
|
|
});
|
|
} else {
|
|
callback(null);
|
|
}
|
|
},
|
|
function prepareFormSubmission(callback) {
|
|
if(!_.isObject(formConfig) || !_.isObject(formConfig.submit)) {
|
|
callback(null);
|
|
return;
|
|
}
|
|
|
|
self.on('submit', function formSubmit(formData) {
|
|
self.client.log.trace( { formData }, 'Form submit');
|
|
|
|
//
|
|
// Locate configuration for this form ID
|
|
//
|
|
const confForFormId =
|
|
_.get(formConfig, [ 'submit', formData.submitId ]) ||
|
|
_.get(formConfig, [ 'submit', '*' ]);
|
|
|
|
if(!Array.isArray(confForFormId)) {
|
|
return self.client.log.debug( { formId : formData.submitId }, 'No configuration for form ID');
|
|
}
|
|
|
|
// locate a matching action block, if any
|
|
const actionBlock = confForFormId.find(actionBlock => _.isEqualWith(formData.value, actionBlock.value, self.actionBlockValueComparator));
|
|
if(actionBlock) {
|
|
self.handleActionWrapper(formData, actionBlock);
|
|
}
|
|
});
|
|
|
|
callback(null);
|
|
},
|
|
function loadActionKeys(callback) {
|
|
if(!_.isObject(formConfig) || !_.isArray(formConfig.actionKeys)) {
|
|
callback(null);
|
|
return;
|
|
}
|
|
|
|
formConfig.actionKeys.forEach(function akEntry(ak) {
|
|
//
|
|
// * 'keys' must be present and be an array of key names
|
|
// * If 'viewId' is present, key(s) will focus & submit on behalf
|
|
// of the specified view.
|
|
// * If 'action' is present, that action will be procesed when
|
|
// triggered by key(s)
|
|
//
|
|
// Ultimately, create a map of key -> { action block }
|
|
//
|
|
if(!_.isArray(ak.keys)) {
|
|
return;
|
|
}
|
|
|
|
ak.keys.forEach(function actionKeyName(kn) {
|
|
self.actionKeyMap[kn] = ak;
|
|
});
|
|
|
|
});
|
|
|
|
callback(null);
|
|
},
|
|
function drawAllViews(callback) {
|
|
self.redrawAll(self.formInitialFocusId);
|
|
callback(null);
|
|
},
|
|
function setInitialViewFocus(callback) {
|
|
if(self.formInitialFocusId) {
|
|
self.switchFocus(self.formInitialFocusId);
|
|
}
|
|
callback(null);
|
|
}
|
|
],
|
|
function complete(err) {
|
|
if(_.isFunction(cb)) {
|
|
cb(err);
|
|
}
|
|
}
|
|
);
|
|
};
|
|
|
|
ViewController.prototype.formatMCIString = function(format) {
|
|
var self = this;
|
|
var view;
|
|
|
|
return format.replace(/{(\d+)}/g, function replacer(match, number) {
|
|
view = self.getView(number);
|
|
|
|
if(!view) {
|
|
return match;
|
|
}
|
|
|
|
return view.getData();
|
|
});
|
|
};
|
|
|
|
ViewController.prototype.getFormData = function(key) {
|
|
/*
|
|
Example form data:
|
|
{
|
|
id : 0,
|
|
submitId : 1,
|
|
value : {
|
|
"1" : "hurp",
|
|
"2" : [ 'a', 'b', ... ],
|
|
"3" 2,
|
|
"pants" : "no way"
|
|
}
|
|
|
|
}
|
|
*/
|
|
const formData = {
|
|
id : this.formId,
|
|
submitId : this.focusedView.id,
|
|
value : {},
|
|
};
|
|
|
|
if(key) {
|
|
formData.key = key;
|
|
}
|
|
|
|
let viewData;
|
|
_.each(this.views, view => {
|
|
try {
|
|
// don't fill forms with static, non user-editable data data
|
|
if(!view.acceptsInput) {
|
|
return;
|
|
}
|
|
|
|
// some form values may be omitted from submission all together
|
|
if(view.omitFromSubmission) {
|
|
return;
|
|
}
|
|
|
|
viewData = view.getData();
|
|
if(_.isUndefined(viewData)) {
|
|
return;
|
|
}
|
|
|
|
formData.value[ view.submitArgName ? view.submitArgName : view.id ] = viewData;
|
|
} catch(e) {
|
|
this.client.log.error( { error : e.message }, 'Exception caught gathering form data' );
|
|
}
|
|
});
|
|
|
|
return formData;
|
|
};
|