1 | import {OpaqueToken, Optional, Inject, Injectable} from 'angular2/core';
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2 |
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3 | export const WEBPACK_HMR = new OpaqueToken('$$AppState');
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4 |
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5 | @Injectable()
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6 | export class WebpackStore {
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7 | static _state = {};
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8 | static _states = [];
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9 |
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10 | constructor(@Optional() @Inject(WEBPACK_HMR) state?: any) {
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11 | if (state) {
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12 | console.log('WebpackState initial data', state);
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13 | }
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14 | WebpackStore._state = state || WebpackStore._state;
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15 | }
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16 |
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17 | static set(prop, value) {
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18 | WebpackStore._state[prop] = value;
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19 | return WebpackStore._state[prop];
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20 | }
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21 |
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22 | static get(prop) {
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23 | return WebpackStore._state[prop];
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24 | }
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25 |
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26 | static select(name, getState) {
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27 | WebpackStore._states.push({ name, getState });
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28 | let defaultData = getState();
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29 | let currentData = WebpackStore.get(name);
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30 |
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31 | if (defaultData && !currentData) {
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32 | return WebpackStore.set(name, defaultData);
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33 | } else if (defaultData && currentData) {
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34 | return WebpackStore.set(name, (<any>Object).assign({}, defaultData, currentData));
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35 | } else {
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36 | return WebpackStore.set(name, currentData || defaultData);
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37 | }
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38 | }
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39 |
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40 | static dispose() {
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41 | WebpackStore._states = [];
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42 | WebpackStore._state = {};
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43 | }
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44 |
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45 | get(prop) {
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46 | return WebpackStore.get(prop);
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47 | }
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48 |
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49 | set(prop, value) {
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50 | return WebpackStore.set(prop, value);
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51 | }
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52 |
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53 | select(name, getState) {
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54 | return WebpackStore.select(name, getState);
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55 | }
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56 |
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57 | dispose() {
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58 | return WebpackStore.dispose();
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59 | }
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60 |
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61 | getState() {
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62 | let initialState = (<any>Object).assign({}, WebpackStore._state);
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63 | return WebpackStore._states
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64 | .reduce((memo, item) => {
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65 | memo[item.name] = item.getState();
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66 | return memo;
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67 | }, initialState);
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68 | }
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69 |
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70 | toJSON() {
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71 | return this.getState();
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72 | }
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73 | }
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