1 | import EE from '@antv/event-emitter';
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2 |
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3 | interface BaseCfg {
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4 | visible?: boolean;
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5 | }
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6 |
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7 |
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8 |
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9 |
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10 | export default class Base extends EE {
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11 |
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12 | public visible: boolean;
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13 |
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14 | public destroyed: boolean = false;
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15 |
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16 | constructor(cfg: BaseCfg) {
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17 | super();
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18 | const { visible = true } = cfg;
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19 | this.visible = visible;
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20 | }
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21 |
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22 | |
23 |
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24 |
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25 | public show() {
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26 | const visible = this.visible;
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27 | if (!visible) {
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28 | this.changeVisible(true);
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29 | }
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30 | }
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31 |
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32 | |
33 |
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34 |
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35 | public hide() {
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36 | const visible = this.visible;
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37 | if (visible) {
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38 | this.changeVisible(false);
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39 | }
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40 | }
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41 |
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42 | |
43 |
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44 |
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45 | public destroy() {
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46 | this.off();
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47 | this.destroyed = true;
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48 | }
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49 |
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50 | |
51 |
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52 |
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53 |
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54 |
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55 | public changeVisible(visible: boolean) {
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56 | if (this.visible === visible) {
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57 | return;
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58 | }
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59 | this.visible = visible;
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60 | }
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61 | }
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