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