91 lines
1.9 KiB
JavaScript
91 lines
1.9 KiB
JavaScript
var AppDispatcher = require('../dispatcher/appDispatcher');
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var EventEmitter = require('events').EventEmitter;
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var CartConstants = require('../constants/cartConstants');
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var _ = require('underscore');
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var states = {
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}
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var loadCart = function() {
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};
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var addItem = function(itemId) {
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// TODO: push state to server side
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var state = states[itemId] || { count: 0 };
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state.count++;
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states[itemId] = state;
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};
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var takeItemOut = function(itemId) {
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// TODO: push state to server side
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var state = states[itemId] || { count: 0 };
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if (state.count > 0) {
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state.count--;
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}
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states[itemId] = state;
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};
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// Extend CartStore with EventEmitter to add eventing capabilities
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var CartStore = _.extend({}, EventEmitter.prototype, {
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getStateFor: function(itemId) {
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// TODO: get from server side ?
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var state = states[itemId] || { count: 0 }
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return state
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},
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// Emit Change event
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emitChange: function() {
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console.log("Emitting change!");
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this.emit('change');
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},
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// Add change listener
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addChangeListener: function(callback) {
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this.on('change', callback);
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},
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// Remove change listener
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removeChangeListener: function(callback) {
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this.removeListener('change', callback);
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}
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});
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// Register callback with AppDispatcher
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AppDispatcher.register(function(payload) {
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var action = payload.action;
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var text;
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switch (action.actionType) {
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case CartConstants.LOAD:
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loadCart();
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break;
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case CartConstants.ADD_ITEM:
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addItem(action.itemId);
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break;
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case CartConstants.TAKE_ITEM_OUT:
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takeItemOut(action.itemId);
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break;
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default:
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return true;
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}
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// If action was responded to, emit change event
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CartStore.emitChange();
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return true;
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});
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module.exports = CartStore;
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