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10 | 'use strict';
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11 |
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12 | var _assign = require('object-assign');
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13 |
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14 | exports.createUpdateQueue = function (partialState) {
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15 | var queue = {
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16 | partialState: partialState,
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17 | callback: null,
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18 | callbackWasCalled: false,
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19 | next: null,
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20 | isReplace: false,
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21 | isForced: false,
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22 | tail: null
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23 | };
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24 | queue.tail = queue;
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25 | return queue;
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26 | };
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27 |
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28 | exports.addToQueue = function (queue, partialState) {
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29 | var node = {
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30 | partialState: partialState,
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31 | callback: null,
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32 | callbackWasCalled: false,
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33 | next: null
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34 | };
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35 | queue.tail.next = node;
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36 | queue.tail = node;
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37 | return queue;
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38 | };
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39 |
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40 | exports.addCallbackToQueue = function (queue, callback) {
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41 | if (queue.tail.callback) {
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42 |
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43 | exports.addToQueue(queue, null);
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44 | }
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45 | queue.tail.callback = callback;
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46 | return queue;
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47 | };
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48 |
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49 | exports.callCallbacks = function (queue, context) {
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50 | var node = queue;
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51 | while (node) {
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52 | if (node.callback && !node.callbackWasCalled) {
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53 | node.callbackWasCalled = true;
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54 | node.callback.call(context);
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55 | }
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56 | node = node.next;
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57 | }
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58 | };
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59 |
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60 | exports.mergeUpdateQueue = function (queue, prevState, props) {
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61 | var node = queue;
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62 | var state = queue.isReplace ? null : _assign({}, prevState);
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63 | while (node) {
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64 | var _partialState = void 0;
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65 | if (typeof node.partialState === 'function') {
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66 | var updateFn = node.partialState;
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67 | _partialState = updateFn(state, props);
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68 | } else {
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69 | _partialState = node.partialState;
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70 | }
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71 | state = _assign(state || {}, _partialState);
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72 | node = node.next;
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73 | }
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74 | return state;
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75 | }; |
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