1 |
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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"), require("./foldcode"));
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7 | else if (typeof define == "function" && define.amd)
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8 | define(["../../lib/codemirror", "./foldcode"], 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 |
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14 | CodeMirror.defineOption("foldGutter", false, function(cm, val, old) {
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15 | if (old && old != CodeMirror.Init) {
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16 | cm.clearGutter(cm.state.foldGutter.options.gutter);
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17 | cm.state.foldGutter = null;
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18 | cm.off("gutterClick", onGutterClick);
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19 | cm.off("change", onChange);
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20 | cm.off("viewportChange", onViewportChange);
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21 | cm.off("fold", onFold);
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22 | cm.off("unfold", onFold);
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23 | cm.off("swapDoc", onChange);
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24 | }
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25 | if (val) {
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26 | cm.state.foldGutter = new State(parseOptions(val));
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27 | updateInViewport(cm);
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28 | cm.on("gutterClick", onGutterClick);
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29 | cm.on("change", onChange);
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30 | cm.on("viewportChange", onViewportChange);
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31 | cm.on("fold", onFold);
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32 | cm.on("unfold", onFold);
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33 | cm.on("swapDoc", onChange);
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34 | }
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35 | });
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36 |
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37 | var Pos = CodeMirror.Pos;
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38 |
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39 | function State(options) {
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40 | this.options = options;
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41 | this.from = this.to = 0;
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42 | }
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43 |
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44 | function parseOptions(opts) {
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45 | if (opts === true) opts = {};
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46 | if (opts.gutter == null) opts.gutter = "CodeMirror-foldgutter";
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47 | if (opts.indicatorOpen == null) opts.indicatorOpen = "CodeMirror-foldgutter-open";
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48 | if (opts.indicatorFolded == null) opts.indicatorFolded = "CodeMirror-foldgutter-folded";
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49 | return opts;
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50 | }
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51 |
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52 | function isFolded(cm, line) {
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53 | var marks = cm.findMarks(Pos(line, 0), Pos(line + 1, 0));
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54 | for (var i = 0; i < marks.length; ++i)
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55 | if (marks[i].__isFold && marks[i].find().from.line == line) return marks[i];
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56 | }
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57 |
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58 | function marker(spec) {
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59 | if (typeof spec == "string") {
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60 | var elt = document.createElement("div");
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61 | elt.className = spec + " CodeMirror-guttermarker-subtle";
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62 | return elt;
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63 | } else {
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64 | return spec.cloneNode(true);
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65 | }
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66 | }
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67 |
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68 | function updateFoldInfo(cm, from, to) {
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69 | var opts = cm.state.foldGutter.options, cur = from;
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70 | var minSize = cm.foldOption(opts, "minFoldSize");
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71 | var func = cm.foldOption(opts, "rangeFinder");
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72 | cm.eachLine(from, to, function(line) {
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73 | var mark = null;
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74 | if (isFolded(cm, cur)) {
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75 | mark = marker(opts.indicatorFolded);
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76 | } else {
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77 | var pos = Pos(cur, 0);
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78 | var range = func && func(cm, pos);
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79 | if (range && range.to.line - range.from.line >= minSize)
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80 | mark = marker(opts.indicatorOpen);
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81 | }
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82 | cm.setGutterMarker(line, opts.gutter, mark);
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83 | ++cur;
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84 | });
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85 | }
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86 |
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87 | function updateInViewport(cm) {
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88 | var vp = cm.getViewport(), state = cm.state.foldGutter;
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89 | if (!state) return;
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90 | cm.operation(function() {
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91 | updateFoldInfo(cm, vp.from, vp.to);
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92 | });
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93 | state.from = vp.from; state.to = vp.to;
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94 | }
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95 |
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96 | function onGutterClick(cm, line, gutter) {
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97 | var state = cm.state.foldGutter;
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98 | if (!state) return;
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99 | var opts = state.options;
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100 | if (gutter != opts.gutter) return;
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101 | var folded = isFolded(cm, line);
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102 | if (folded) folded.clear();
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103 | else cm.foldCode(Pos(line, 0), opts.rangeFinder);
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104 | }
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105 |
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106 | function onChange(cm) {
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107 | var state = cm.state.foldGutter;
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108 | if (!state) return;
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109 | var opts = state.options;
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110 | state.from = state.to = 0;
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111 | clearTimeout(state.changeUpdate);
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112 | state.changeUpdate = setTimeout(function() { updateInViewport(cm); }, opts.foldOnChangeTimeSpan || 600);
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113 | }
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114 |
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115 | function onViewportChange(cm) {
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116 | var state = cm.state.foldGutter;
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117 | if (!state) return;
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118 | var opts = state.options;
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119 | clearTimeout(state.changeUpdate);
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120 | state.changeUpdate = setTimeout(function() {
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121 | var vp = cm.getViewport();
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122 | if (state.from == state.to || vp.from - state.to > 20 || state.from - vp.to > 20) {
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123 | updateInViewport(cm);
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124 | } else {
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125 | cm.operation(function() {
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126 | if (vp.from < state.from) {
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127 | updateFoldInfo(cm, vp.from, state.from);
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128 | state.from = vp.from;
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129 | }
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130 | if (vp.to > state.to) {
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131 | updateFoldInfo(cm, state.to, vp.to);
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132 | state.to = vp.to;
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133 | }
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134 | });
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135 | }
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136 | }, opts.updateViewportTimeSpan || 400);
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137 | }
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138 |
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139 | function onFold(cm, from) {
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140 | var state = cm.state.foldGutter;
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141 | if (!state) return;
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142 | var line = from.line;
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143 | if (line >= state.from && line < state.to)
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144 | updateFoldInfo(cm, line, line + 1);
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145 | }
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146 | });
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