146 lines
3.6 KiB
JavaScript
146 lines
3.6 KiB
JavaScript
/* jslint node: true */
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'use strict';
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var View = require('./view.js').View;
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var ansi = require('./ansi_term.js');
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var miscUtil = require('./misc_util.js');
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var util = require('util');
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var assert = require('assert');
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var _ = require('lodash');
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exports.MenuView = MenuView;
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function MenuView(options) {
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options.acceptsFocus = miscUtil.valueWithDefault(options.acceptsFocus, true);
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options.acceptsInput = miscUtil.valueWithDefault(options.acceptsInput, true);
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View.call(this, options);
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var self = this;
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if(options.items) {
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this.setItems(options.items);
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} else {
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this.items = [];
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}
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this.caseInsensitiveHotKeys = miscUtil.valueWithDefault(options.caseInsensitiveHotKeys, true);
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this.setHotKeys(options.hotKeys);
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this.focusedItemIndex = options.focusedItemIndex || 0;
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this.focusedItemIndex = this.items.length >= this.focusedItemIndex ? this.focusedItemIndex : 0;
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this.itemSpacing = _.isNumber(options.itemSpacing) ? options.itemSpacing : 0;
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// :TODO: probably just replace this with owner draw / pipe codes / etc. more control, less specialization
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this.focusPrefix = options.focusPrefix || '';
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this.focusSuffix = options.focusSuffix || '';
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this.fillChar = miscUtil.valueWithDefault(options.fillChar, ' ').substr(0, 1);
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this.justify = options.justify || 'none';
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this.hasFocusItems = function() {
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return !_.isUndefined(self.focusItems);
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};
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this.getHotKeyItemIndex = function(ch) {
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if(ch && self.hotKeys) {
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var keyIndex = self.hotKeys[self.caseInsensitiveHotKeys ? ch.toLowerCase() : ch];
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if(_.isNumber(keyIndex)) {
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return keyIndex;
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}
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}
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return -1;
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};
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}
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util.inherits(MenuView, View);
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MenuView.prototype.setItems = function(items) {
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var self = this;
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if(items) {
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this.items = []; // :TODO: better way?
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items.forEach(function item(itemText) {
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self.items.push( { text : itemText } );
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});
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}
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};
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MenuView.prototype.getItem = function(index) {
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return this.items[index].text;
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};
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MenuView.prototype.focusNext = function() {
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// nothing @ base currently
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this.emit('index update', this.focusedItemIndex);
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};
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MenuView.prototype.focusPrevious = function() {
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// nothign @ base currently
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this.emit('index update', this.focusedItemIndex);
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};
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MenuView.prototype.setFocusItemIndex = function(index) {
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this.focusedItemIndex = index;
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};
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MenuView.prototype.onKeyPress = function(ch, key) {
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var itemIndex = this.getHotKeyItemIndex(ch);
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if(itemIndex >= 0) {
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this.setFocusItemIndex(itemIndex);
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if(true === this.hotKeySubmit) {
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this.emit('action', 'accept');
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}
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}
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MenuView.super_.prototype.onKeyPress.call(this, ch, key);
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};
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MenuView.prototype.setFocusItems = function(items) {
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var self = this;
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if(items) {
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this.focusItems = [];
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items.forEach(function item(itemText) {
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self.focusItems.push( { text : itemText } );
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});
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}
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};
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MenuView.prototype.setItemSpacing = function(itemSpacing) {
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itemSpacing = parseInt(itemSpacing);
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assert(_.isNumber(itemSpacing));
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this.itemSpacing = itemSpacing;
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this.positionCacheExpired = true;
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};
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MenuView.prototype.setPropertyValue = function(propName, value) {
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switch(propName) {
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case 'itemSpacing' : this.setItemSpacing(value); break;
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case 'items' : this.setItems(value); break;
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case 'focusItems' : this.setFocusItems(value); break;
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case 'hotKeys' : this.setHotKeys(value); break;
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case 'hotKeySubmit' : this.hotKeySubmit = value; break;
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}
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MenuView.super_.prototype.setPropertyValue.call(this, propName, value);
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};
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MenuView.prototype.setHotKeys = function(hotKeys) {
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if(_.isObject(hotKeys)) {
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if(this.caseInsensitiveHotKeys) {
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this.hotKeys = {};
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for(var key in hotKeys) {
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this.hotKeys[key.toLowerCase()] = hotKeys[key];
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}
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} else {
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this.hotKeys = hotKeys;
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}
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}
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};
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