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2 |
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3 |
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4 | (function(mod) {
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5 | if (typeof exports == "object" && typeof module == "object")
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6 | mod(require("../../lib/codemirror"));
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7 | else if (typeof define == "function" && define.amd)
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8 | define(["../../lib/codemirror"], mod);
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9 | else
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10 | mod(CodeMirror);
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11 | })(function(CodeMirror) {
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12 | "use strict";
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13 | var WRAP_CLASS = "CodeMirror-activeline";
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14 | var BACK_CLASS = "CodeMirror-activeline-background";
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15 | var GUTT_CLASS = "CodeMirror-activeline-gutter";
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16 |
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17 | CodeMirror.defineOption("styleActiveLine", false, function(cm, val, old) {
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18 | var prev = old == CodeMirror.Init ? false : old;
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19 | if (val == prev) return
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20 | if (prev) {
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21 | cm.off("beforeSelectionChange", selectionChange);
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22 | clearActiveLines(cm);
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23 | delete cm.state.activeLines;
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24 | }
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25 | if (val) {
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26 | cm.state.activeLines = [];
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27 | updateActiveLines(cm, cm.listSelections());
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28 | cm.on("beforeSelectionChange", selectionChange);
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29 | }
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30 | });
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31 |
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32 | function clearActiveLines(cm) {
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33 | for (var i = 0; i < cm.state.activeLines.length; i++) {
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34 | cm.removeLineClass(cm.state.activeLines[i], "wrap", WRAP_CLASS);
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35 | cm.removeLineClass(cm.state.activeLines[i], "background", BACK_CLASS);
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36 | cm.removeLineClass(cm.state.activeLines[i], "gutter", GUTT_CLASS);
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37 | }
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38 | }
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39 |
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40 | function sameArray(a, b) {
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41 | if (a.length != b.length) return false;
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42 | for (var i = 0; i < a.length; i++)
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43 | if (a[i] != b[i]) return false;
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44 | return true;
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45 | }
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46 |
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47 | function updateActiveLines(cm, ranges) {
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48 | var active = [];
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49 | for (var i = 0; i < ranges.length; i++) {
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50 | var range = ranges[i];
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51 | var option = cm.getOption("styleActiveLine");
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52 | if (typeof option == "object" && option.nonEmpty ? range.anchor.line != range.head.line : !range.empty())
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53 | continue
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54 | var line = cm.getLineHandleVisualStart(range.head.line);
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55 | if (active[active.length - 1] != line) active.push(line);
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56 | }
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57 | if (sameArray(cm.state.activeLines, active)) return;
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58 | cm.operation(function() {
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59 | clearActiveLines(cm);
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60 | for (var i = 0; i < active.length; i++) {
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61 | cm.addLineClass(active[i], "wrap", WRAP_CLASS);
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62 | cm.addLineClass(active[i], "background", BACK_CLASS);
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63 | cm.addLineClass(active[i], "gutter", GUTT_CLASS);
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64 | }
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65 | cm.state.activeLines = active;
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66 | });
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67 | }
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68 |
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69 | function selectionChange(cm, sel) {
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70 | updateActiveLines(cm, sel.ranges);
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71 | }
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72 | });
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