enigma-bbs/core/menu_module.js

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/* jslint node: true */
'use strict';
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var PluginModule = require('./plugin_module.js').PluginModule;
var theme = require('./theme.js');
var art = require('./art.js');
var Log = require('./logger.js').log;
var ansi = require('./ansi_term.js');
var asset = require('./asset.js');
var ViewController = require('./view_controller.js').ViewController;
var menuUtil = require('./menu_util.js');
var Config = require('./config.js').config;
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var async = require('async');
var assert = require('assert');
var _ = require('lodash');
exports.MenuModule = MenuModule;
// :TODO: some of this is a bit off... should pause after finishedLoading()
function MenuModule(options) {
PluginModule.call(this, options);
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var self = this;
this.menuName = options.menuName;
this.menuConfig = options.menuConfig;
this.menuConfig.options = options.menuConfig.options || {};
this.menuMethods = {}; // methods called from @method's
this.cls = _.isBoolean(this.menuConfig.options.cls) ?
this.menuConfig.options.cls :
Config.menus.cls;
this.initViewControllers();
this.initSequence = function() {
var mciData = { };
async.series(
[
function beforeDisplayArt(callback) {
self.beforeArt();
callback(null);
},
function displayMenuArt(callback) {
if(_.isString(self.menuConfig.art)) {
theme.displayThemedAsset(
self.menuConfig.art,
self.client,
self.menuConfig.options, // can include .font, .trailingLF, etc.
function displayed(err, artData) {
if(err) {
self.client.log.debug( { art : self.menuConfig.art, err : err }, 'Could not display art');
} else {
mciData.menu = artData.mciMap;
}
callback(null); // non-fatal
}
);
} else {
callback(null);
}
},
function moveToPromptLocation(callback) {
if(self.menuConfig.prompt) {
// :TODO: fetch and move cursor to prompt location, if supplied. See notes/etc. on placements
}
callback(null);
},
function displayPromptArt(callback) {
if(_.isString(self.menuConfig.prompt)) {
// If a prompt is specified, we need the configuration
if(!_.isObject(self.menuConfig.promptConfig)) {
callback(new Error('Prompt specified but configuraiton not found!'));
return;
}
// Prompts *must* have art. If it's missing it's an error
// :TODO: allow inline prompts in the future, e.g. @inline:memberName -> { "memberName" : { "text" : "stuff", ... } }
var promptConfig = self.menuConfig.promptConfig;
theme.displayThemedAsset(
promptConfig.art,
self.client,
self.menuConfig.options, // can include .font, .trailingLF, etc.
function displayed(err, artData) {
if(!err) {
mciData.prompt = artData.mciMap;
}
callback(err);
});
} else {
callback(null);
}
},
function recordCursorPosition(callback) {
if(self.shouldPause()) {
self.client.once('cursor position report', function cpr(pos) {
self.afterArtPos = pos;
self.client.log.trace( { position : pos }, 'After art position recorded');
callback(null);
});
self.client.term.write(ansi.queryPos());
} else {
callback(null);
}
},
function afterArtDisplayed(callback) {
self.mciReady(mciData, callback);
},
function displayPauseIfRequested(callback) {
if(self.shouldPause()) {
self.client.term.write(ansi.goto(self.afterArtPos[0], 1));
// :TODO: really need a client.term.pause() that uses the correct art/etc.
theme.displayThemedPause( { client : self.client }, function keyPressed() {
callback(null);
});
} else {
callback(null);
}
}
],
function complete(err) {
if(err) {
console.log(err)
// :TODO: what to do exactly?????
}
self.finishedLoading();
self.nextMenu();
}
);
};
this.shouldPause = function() {
return 'end' === self.menuConfig.options.pause || true === self.menuConfig.options.pause;
};
this.hasNextTimeout = function() {
return _.isNumber(self.menuConfig.options.nextTimeout);
};
this.nextMenu = function() {
function goNext() {
if(_.isString(self.menuConfig.next)) {
menuUtil.handleNext(self.client, self.menuConfig.next);
} else {
self.client.fallbackMenuModule( { }, function fallback(err) {
// :TODO: this seems sloppy... look into further
});
}
}
if(!_.isObject(self.menuConfig.form) && !_.isString(self.menuConfig.prompt)) {
/*
If 'next' is supplied, we'll use it. Otherwise, utlize fallback which
may be explicit (supplied) or non-explicit (previous menu)
'next' may be a simple asset, or a object with next.asset and
extrArgs
next: assetSpec
-or-
next: {
asset: assetSpec
extraArgs: ...
}
*/
if(self.hasNextTimeout()) {
setTimeout(function nextTimeout() {
goNext();
}, this.menuConfig.options.nextTimeout);
} else {
goNext();
}
}
};
}
require('util').inherits(MenuModule, PluginModule);
require('./mod_mixins.js').ViewControllerManagement.call(MenuModule.prototype);
MenuModule.prototype.enter = function(client) {
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this.client = client;
assert(_.isObject(client));
if(_.isString(this.menuConfig.status)) {
this.client.currentStatus = this.menuConfig.status;
} else {
this.client.currentStatus = 'Browsing menus';
}
this.initSequence();
};
MenuModule.prototype.getSaveState = function() {
// nothing in base
};
MenuModule.prototype.restoreSavedState = function(savedState) {
// nothing in base
};
MenuModule.prototype.leave = function() {
this.detachViewControllers();
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};
MenuModule.prototype.beforeArt = function() {
if(this.cls) {
this.client.term.write(ansi.resetScreen());
}
if(_.isNumber(this.menuConfig.options.baudRate)) {
this.client.term.write(ansi.setEmulatedBaudRate(this.menuConfig.options.baudRate));
}
};
MenuModule.prototype.mciReady = function(mciData, cb) {
// Reserved for sub classes
cb(null);
};
MenuModule.prototype.standardMCIReadyHandler = function(mciData, cb) {
//
// A quick rundown:
// * We may have mciData.menu, mciData.prompt, or both.
// * Prompt form is favored over menu form if both are present.
// * Standard/prefdefined MCI entries must load both (e.g. %BN is expected to resolve)
//
var self = this;
async.series(
[
function addViewControllers(callback) {
_.forEach(mciData, function entry(mciMap, name) {
assert('menu' === name || 'prompt' === name);
self.addViewController(name, new ViewController( { client : self.client } ));
});
callback(null);
},
function createMenu(callback) {
if(self.viewControllers.menu) {
var menuLoadOpts = {
mciMap : mciData.menu,
callingMenu : self,
withoutForm : _.isObject(mciData.prompt),
};
self.viewControllers.menu.loadFromMenuConfig(menuLoadOpts, function menuLoaded(err) {
callback(err);
});
} else {
callback(null);
}
},
function createPrompt(callback) {
if(self.viewControllers.prompt) {
var promptLoadOpts = {
callingMenu : self,
mciMap : mciData.prompt,
};
self.viewControllers.prompt.loadFromPromptConfig(promptLoadOpts, function promptLoaded(err) {
callback(err);
});
} else {
callback(null);
}
}
],
function complete(err) {
cb(err);
}
);
};
MenuModule.prototype.finishedLoading = function() {
/*
var self = this;
if(_.isNumber(this.menuConfig.options.nextTimeout) &&
_.isString(this.menuConfig.next))
{
setTimeout(function nextTimeout() {
menuUtil.handleNext(self.client, self.menuConfig.next);
//self.client.gotoMenuModule( { name : self.menuConfig.next } );
}, this.menuConfig.options.nextTimeout);
}
*/
};