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/** internal
* class ArgumentGroup
*
* Group arguments.
* By default, ArgumentParser groups command-line arguments
* into “positional arguments” and “optional arguments”
* when displaying help messages. When there is a better
* conceptual grouping of arguments than this default one,
* appropriate groups can be created using the addArgumentGroup() method
*
* This class inherited from [[ArgumentContainer]]
**/
'use strict';
var util = require('util');
var ActionContainer = require('../action_container');
/**
* new ArgumentGroup(container, options)
* - container (object): main container
* - options (object): hash of group options
*
* #### options
* - **prefixChars** group name prefix
* - **argumentDefault** default argument value
* - **title** group title
* - **description** group description
*
**/
var ArgumentGroup = module.exports = function ArgumentGroup(container, options) {
options = options || {};
// add any missing keyword arguments by checking the container
options.conflictHandler = (options.conflictHandler || container.conflictHandler);
options.prefixChars = (options.prefixChars || container.prefixChars);
options.argumentDefault = (options.argumentDefault || container.argumentDefault);
ActionContainer.call(this, options);
// group attributes
this.title = options.title;
this._groupActions = [];
// share most attributes with the container
this._container = container;
this._registries = container._registries;
this._actions = container._actions;
this._optionStringActions = container._optionStringActions;
this._defaults = container._defaults;
this._hasNegativeNumberOptionals = container._hasNegativeNumberOptionals;
this._mutuallyExclusiveGroups = container._mutuallyExclusiveGroups;
};
util.inherits(ArgumentGroup, ActionContainer);
ArgumentGroup.prototype._addAction = function (action) {
// Parent add action
action = ActionContainer.prototype._addAction.call(this, action);
this._groupActions.push(action);
return action;
};
ArgumentGroup.prototype._removeAction = function (action) {
// Parent remove action
ActionContainer.prototype._removeAction.call(this, action);
var actionIndex = this._groupActions.indexOf(action);
if (actionIndex >= 0) {
this._groupActions.splice(actionIndex, 1);
}
};
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