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| Rev | Author | Line No. | Line |
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| 14283 | obado | 1 | // CodeMirror, copyright (c) by Marijn Haverbeke and others |
| 2 | // Distributed under an MIT license: https://codemirror.net/LICENSE |
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| 3 | |||
| 4 | // Because sometimes you need to mark the selected *text*. |
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| 5 | // |
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| 6 | // Adds an option 'styleSelectedText' which, when enabled, gives |
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| 7 | // selected text the CSS class given as option value, or |
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| 8 | // "CodeMirror-selectedtext" when the value is not a string. |
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| 9 | |||
| 10 | (function(mod) { |
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| 11 | if (typeof exports == "object" && typeof module == "object") // CommonJS |
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| 12 | mod(require("../../lib/codemirror")); |
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| 13 | else if (typeof define == "function" && define.amd) // AMD |
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| 14 | define(["../../lib/codemirror"], mod); |
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| 15 | else // Plain browser env |
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| 16 | mod(CodeMirror); |
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| 17 | })(function(CodeMirror) { |
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| 18 | "use strict"; |
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| 19 | |||
| 20 | CodeMirror.defineOption("styleSelectedText", false, function(cm, val, old) { |
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| 21 | var prev = old && old != CodeMirror.Init; |
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| 22 | if (val && !prev) { |
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| 23 | cm.state.markedSelection = []; |
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| 24 | cm.state.markedSelectionStyle = typeof val == "string" ? val : "CodeMirror-selectedtext"; |
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| 25 | reset(cm); |
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| 26 | cm.on("cursorActivity", onCursorActivity); |
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| 27 | cm.on("change", onChange); |
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| 28 | } else if (!val && prev) { |
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| 29 | cm.off("cursorActivity", onCursorActivity); |
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| 30 | cm.off("change", onChange); |
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| 31 | clear(cm); |
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| 32 | cm.state.markedSelection = cm.state.markedSelectionStyle = null; |
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| 33 | } |
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| 34 | }); |
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| 35 | |||
| 36 | function onCursorActivity(cm) { |
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| 37 | if (cm.state.markedSelection) |
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| 38 | cm.operation(function() { update(cm); }); |
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| 39 | } |
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| 40 | |||
| 41 | function onChange(cm) { |
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| 42 | if (cm.state.markedSelection && cm.state.markedSelection.length) |
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| 43 | cm.operation(function() { clear(cm); }); |
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| 44 | } |
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| 45 | |||
| 46 | var CHUNK_SIZE = 8; |
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| 47 | var Pos = CodeMirror.Pos; |
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| 48 | var cmp = CodeMirror.cmpPos; |
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| 49 | |||
| 50 | function coverRange(cm, from, to, addAt) { |
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| 51 | if (cmp(from, to) == 0) return; |
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| 52 | var array = cm.state.markedSelection; |
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| 53 | var cls = cm.state.markedSelectionStyle; |
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| 54 | for (var line = from.line;;) { |
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| 55 | var start = line == from.line ? from : Pos(line, 0); |
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| 56 | var endLine = line + CHUNK_SIZE, atEnd = endLine >= to.line; |
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| 57 | var end = atEnd ? to : Pos(endLine, 0); |
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| 58 | var mark = cm.markText(start, end, {className: cls}); |
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| 59 | if (addAt == null) array.push(mark); |
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| 60 | else array.splice(addAt++, 0, mark); |
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| 61 | if (atEnd) break; |
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| 62 | line = endLine; |
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| 63 | } |
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| 64 | } |
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| 65 | |||
| 66 | function clear(cm) { |
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| 67 | var array = cm.state.markedSelection; |
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| 68 | for (var i = 0; i < array.length; ++i) array[i].clear(); |
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| 69 | array.length = 0; |
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| 70 | } |
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| 71 | |||
| 72 | function reset(cm) { |
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| 73 | clear(cm); |
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| 74 | var ranges = cm.listSelections(); |
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| 75 | for (var i = 0; i < ranges.length; i++) |
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| 76 | coverRange(cm, ranges[i].from(), ranges[i].to()); |
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| 77 | } |
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| 78 | |||
| 79 | function update(cm) { |
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| 80 | if (!cm.somethingSelected()) return clear(cm); |
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| 81 | if (cm.listSelections().length > 1) return reset(cm); |
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| 82 | |||
| 83 | var from = cm.getCursor("start"), to = cm.getCursor("end"); |
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| 84 | |||
| 85 | var array = cm.state.markedSelection; |
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| 86 | if (!array.length) return coverRange(cm, from, to); |
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| 87 | |||
| 88 | var coverStart = array[0].find(), coverEnd = array[array.length - 1].find(); |
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| 89 | if (!coverStart || !coverEnd || to.line - from.line <= CHUNK_SIZE || |
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| 90 | cmp(from, coverEnd.to) >= 0 || cmp(to, coverStart.from) <= 0) |
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| 91 | return reset(cm); |
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| 92 | |||
| 93 | while (cmp(from, coverStart.from) > 0) { |
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| 94 | array.shift().clear(); |
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| 95 | coverStart = array[0].find(); |
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| 96 | } |
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| 97 | if (cmp(from, coverStart.from) < 0) { |
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| 98 | if (coverStart.to.line - from.line < CHUNK_SIZE) { |
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| 99 | array.shift().clear(); |
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| 100 | coverRange(cm, from, coverStart.to, 0); |
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| 101 | } else { |
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| 102 | coverRange(cm, from, coverStart.from, 0); |
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| 103 | } |
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| 104 | } |
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| 105 | |||
| 106 | while (cmp(to, coverEnd.to) < 0) { |
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| 107 | array.pop().clear(); |
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| 108 | coverEnd = array[array.length - 1].find(); |
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| 109 | } |
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| 110 | if (cmp(to, coverEnd.to) > 0) { |
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| 111 | if (to.line - coverEnd.from.line < CHUNK_SIZE) { |
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| 112 | array.pop().clear(); |
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| 113 | coverRange(cm, coverEnd.from, to); |
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| 114 | } else { |
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| 115 | coverRange(cm, coverEnd.to, to); |
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| 116 | } |
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| 117 | } |
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| 118 | } |
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| 119 | }); |