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1 // CodeMirror, copyright (c) by Marijn Haverbeke and others
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2 // Distributed under an MIT license: https://codemirror.net/5/LICENSE
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3
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4 // declare global: DOMRect
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5
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6 (function(mod) {
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7 if (typeof exports == "object" && typeof module == "object") // CommonJS
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8 mod(require("../../lib/codemirror"));
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9 else if (typeof define == "function" && define.amd) // AMD
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10 define(["../../lib/codemirror"], mod);
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11 else // Plain browser env
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12 mod(CodeMirror);
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13 })(function(CodeMirror) {
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14 "use strict";
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15
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16 var HINT_ELEMENT_CLASS = "CodeMirror-hint";
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17 var ACTIVE_HINT_ELEMENT_CLASS = "CodeMirror-hint-active";
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18
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19 // This is the old interface, kept around for now to stay
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20 // backwards-compatible.
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21 CodeMirror.showHint = function(cm, getHints, options) {
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22 if (!getHints) return cm.showHint(options);
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23 if (options && options.async) getHints.async = true;
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24 var newOpts = {hint: getHints};
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25 if (options) for (var prop in options) newOpts[prop] = options[prop];
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26 return cm.showHint(newOpts);
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27 };
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28
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29 CodeMirror.defineExtension("showHint", function(options) {
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30 options = parseOptions(this, this.getCursor("start"), options);
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31 var selections = this.listSelections()
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32 if (selections.length > 1) return;
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33 // By default, don't allow completion when something is selected.
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34 // A hint function can have a `supportsSelection` property to
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35 // indicate that it can handle selections.
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36 if (this.somethingSelected()) {
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37 if (!options.hint.supportsSelection) return;
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38 // Don't try with cross-line selections
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39 for (var i = 0; i < selections.length; i++)
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40 if (selections[i].head.line != selections[i].anchor.line) return;
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41 }
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42
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43 if (this.state.completionActive) this.state.completionActive.close();
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44 var completion = this.state.completionActive = new Completion(this, options);
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45 if (!completion.options.hint) return;
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46
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47 CodeMirror.signal(this, "startCompletion", this);
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48 completion.update(true);
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49 });
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50
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51 CodeMirror.defineExtension("closeHint", function() {
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52 if (this.state.completionActive) this.state.completionActive.close()
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53 })
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54
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55 function Completion(cm, options) {
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56 this.cm = cm;
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57 this.options = options;
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58 this.widget = null;
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59 this.debounce = 0;
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60 this.tick = 0;
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61 this.startPos = this.cm.getCursor("start");
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62 this.startLen = this.cm.getLine(this.startPos.line).length - this.cm.getSelection().length;
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63
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64 if (this.options.updateOnCursorActivity) {
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65 var self = this;
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66 cm.on("cursorActivity", this.activityFunc = function() { self.cursorActivity(); });
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67 }
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68 }
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69
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70 var requestAnimationFrame = window.requestAnimationFrame || function(fn) {
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71 return setTimeout(fn, 1000/60);
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72 };
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73 var cancelAnimationFrame = window.cancelAnimationFrame || clearTimeout;
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74
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75 Completion.prototype = {
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76 close: function() {
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77 if (!this.active()) return;
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78 this.cm.state.completionActive = null;
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79 this.tick = null;
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80 if (this.options.updateOnCursorActivity) {
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81 this.cm.off("cursorActivity", this.activityFunc);
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82 }
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83
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84 if (this.widget && this.data) CodeMirror.signal(this.data, "close");
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85 if (this.widget) this.widget.close();
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86 CodeMirror.signal(this.cm, "endCompletion", this.cm);
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87 },
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88
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89 active: function() {
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90 return this.cm.state.completionActive == this;
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91 },
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92
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93 pick: function(data, i) {
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94 var completion = data.list[i], self = this;
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95 this.cm.operation(function() {
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96 if (completion.hint)
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97 completion.hint(self.cm, data, completion);
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98 else
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99 self.cm.replaceRange(getText(completion), completion.from || data.from,
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100 completion.to || data.to, "complete");
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101 CodeMirror.signal(data, "pick", completion);
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102 self.cm.scrollIntoView();
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103 });
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104 if (this.options.closeOnPick) {
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105 this.close();
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106 }
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107 },
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108
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109 cursorActivity: function() {
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110 if (this.debounce) {
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111 cancelAnimationFrame(this.debounce);
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112 this.debounce = 0;
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113 }
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114
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115 var identStart = this.startPos;
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116 if(this.data) {
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117 identStart = this.data.from;
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118 }
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119
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120 var pos = this.cm.getCursor(), line = this.cm.getLine(pos.line);
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121 if (pos.line != this.startPos.line || line.length - pos.ch != this.startLen - this.startPos.ch ||
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122 pos.ch < identStart.ch || this.cm.somethingSelected() ||
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123 (!pos.ch || this.options.closeCharacters.test(line.charAt(pos.ch - 1)))) {
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124 this.close();
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125 } else {
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126 var self = this;
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127 this.debounce = requestAnimationFrame(function() {self.update();});
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128 if (this.widget) this.widget.disable();
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129 }
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130 },
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131
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132 update: function(first) {
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133 if (this.tick == null) return
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134 var self = this, myTick = ++this.tick
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135 fetchHints(this.options.hint, this.cm, this.options, function(data) {
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136 if (self.tick == myTick) self.finishUpdate(data, first)
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137 })
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138 },
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139
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140 finishUpdate: function(data, first) {
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141 if (this.data) CodeMirror.signal(this.data, "update");
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142
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143 var picked = (this.widget && this.widget.picked) || (first && this.options.completeSingle);
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144 if (this.widget) this.widget.close();
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145
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146 this.data = data;
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147
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148 if (data && data.list.length) {
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149 if (picked && data.list.length == 1) {
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150 this.pick(data, 0);
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151 } else {
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152 this.widget = new Widget(this, data);
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153 CodeMirror.signal(data, "shown");
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154 }
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155 }
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156 }
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157 };
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158
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159 function parseOptions(cm, pos, options) {
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160 var editor = cm.options.hintOptions;
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161 var out = {};
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162 for (var prop in defaultOptions) out[prop] = defaultOptions[prop];
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163 if (editor) for (var prop in editor)
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164 if (editor[prop] !== undefined) out[prop] = editor[prop];
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165 if (options) for (var prop in options)
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166 if (options[prop] !== undefined) out[prop] = options[prop];
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167 if (out.hint.resolve) out.hint = out.hint.resolve(cm, pos)
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168 return out;
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169 }
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170
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171 function getText(completion) {
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172 if (typeof completion == "string") return completion;
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173 else return completion.text;
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174 }
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175
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176 function buildKeyMap(completion, handle) {
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177 var baseMap = {
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178 Up: function() {handle.moveFocus(-1);},
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179 Down: function() {handle.moveFocus(1);},
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180 PageUp: function() {handle.moveFocus(-handle.menuSize() + 1, true);},
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181 PageDown: function() {handle.moveFocus(handle.menuSize() - 1, true);},
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182 Home: function() {handle.setFocus(0);},
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183 End: function() {handle.setFocus(handle.length - 1);},
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184 Enter: handle.pick,
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185 Tab: handle.pick,
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186 Esc: handle.close
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187 };
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188
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189 var mac = /Mac/.test(navigator.platform);
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190
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191 if (mac) {
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192 baseMap["Ctrl-P"] = function() {handle.moveFocus(-1);};
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193 baseMap["Ctrl-N"] = function() {handle.moveFocus(1);};
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194 }
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195
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196 var custom = completion.options.customKeys;
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197 var ourMap = custom ? {} : baseMap;
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198 function addBinding(key, val) {
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199 var bound;
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200 if (typeof val != "string")
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201 bound = function(cm) { return val(cm, handle); };
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202 // This mechanism is deprecated
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203 else if (baseMap.hasOwnProperty(val))
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204 bound = baseMap[val];
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205 else
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206 bound = val;
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207 ourMap[key] = bound;
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208 }
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209 if (custom)
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210 for (var key in custom) if (custom.hasOwnProperty(key))
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211 addBinding(key, custom[key]);
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212 var extra = completion.options.extraKeys;
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213 if (extra)
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214 for (var key in extra) if (extra.hasOwnProperty(key))
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215 addBinding(key, extra[key]);
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216 return ourMap;
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217 }
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218
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219 function getHintElement(hintsElement, el) {
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220 while (el && el != hintsElement) {
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221 if (el.nodeName.toUpperCase() === "LI" && el.parentNode == hintsElement) return el;
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222 el = el.parentNode;
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223 }
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224 }
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225
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226 function Widget(completion, data) {
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227 this.id = "cm-complete-" + Math.floor(Math.random(1e6))
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228 this.completion = completion;
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229 this.data = data;
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230 this.picked = false;
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231 var widget = this, cm = completion.cm;
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232 var ownerDocument = cm.getInputField().ownerDocument;
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233 var parentWindow = ownerDocument.defaultView || ownerDocument.parentWindow;
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234
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235 var hints = this.hints = ownerDocument.createElement("ul");
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236 hints.setAttribute("role", "listbox")
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237 hints.setAttribute("aria-expanded", "true")
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238 hints.id = this.id
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239 var theme = completion.cm.options.theme;
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240 hints.className = "CodeMirror-hints " + theme;
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241 this.selectedHint = data.selectedHint || 0;
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242
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243 var completions = data.list;
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244 for (var i = 0; i < completions.length; ++i) {
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245 var elt = hints.appendChild(ownerDocument.createElement("li")), cur = completions[i];
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246 var className = HINT_ELEMENT_CLASS + (i != this.selectedHint ? "" : " " + ACTIVE_HINT_ELEMENT_CLASS);
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247 if (cur.className != null) className = cur.className + " " + className;
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248 elt.className = className;
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249 if (i == this.selectedHint) elt.setAttribute("aria-selected", "true")
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250 elt.id = this.id + "-" + i
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251 elt.setAttribute("role", "option")
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252 if (cur.render) cur.render(elt, data, cur);
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253 else elt.appendChild(ownerDocument.createTextNode(cur.displayText || getText(cur)));
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254 elt.hintId = i;
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255 }
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256
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257 var container = completion.options.container || ownerDocument.body;
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258 var pos = cm.cursorCoords(completion.options.alignWithWord ? data.from : null);
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259 var left = pos.left, top = pos.bottom, below = true;
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260 var offsetLeft = 0, offsetTop = 0;
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261 if (container !== ownerDocument.body) {
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262 // We offset the cursor position because left and top are relative to the offsetParent's top left corner.
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263 var isContainerPositioned = ['absolute', 'relative', 'fixed'].indexOf(parentWindow.getComputedStyle(container).position) !== -1;
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264 var offsetParent = isContainerPositioned ? container : container.offsetParent;
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265 var offsetParentPosition = offsetParent.getBoundingClientRect();
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266 var bodyPosition = ownerDocument.body.getBoundingClientRect();
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267 offsetLeft = (offsetParentPosition.left - bodyPosition.left - offsetParent.scrollLeft);
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268 offsetTop = (offsetParentPosition.top - bodyPosition.top - offsetParent.scrollTop);
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269 }
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270 hints.style.left = (left - offsetLeft) + "px";
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271 hints.style.top = (top - offsetTop) + "px";
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272
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273 // If we're at the edge of the screen, then we want the menu to appear on the left of the cursor.
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274 var winW = parentWindow.innerWidth || Math.max(ownerDocument.body.offsetWidth, ownerDocument.documentElement.offsetWidth);
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275 var winH = parentWindow.innerHeight || Math.max(ownerDocument.body.offsetHeight, ownerDocument.documentElement.offsetHeight);
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276 container.appendChild(hints);
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277 cm.getInputField().setAttribute("aria-autocomplete", "list")
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278 cm.getInputField().setAttribute("aria-owns", this.id)
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279 cm.getInputField().setAttribute("aria-activedescendant", this.id + "-" + this.selectedHint)
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280
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281 var box = completion.options.moveOnOverlap ? hints.getBoundingClientRect() : new DOMRect();
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282 var scrolls = completion.options.paddingForScrollbar ? hints.scrollHeight > hints.clientHeight + 1 : false;
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283
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284 // Compute in the timeout to avoid reflow on init
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285 var startScroll;
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286 setTimeout(function() { startScroll = cm.getScrollInfo(); });
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287
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288 var overlapY = box.bottom - winH;
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289 if (overlapY > 0) { // Does not fit below
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290 var height = box.bottom - box.top, spaceAbove = box.top - (pos.bottom - pos.top) - 2
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291 if (winH - box.top < spaceAbove) { // More room at the top
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292 if (height > spaceAbove) hints.style.height = (height = spaceAbove) + "px";
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293 hints.style.top = ((top = pos.top - height) + offsetTop) + "px";
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294 below = false;
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295 } else {
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296 hints.style.height = (winH - box.top - 2) + "px";
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297 }
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298 }
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299 var overlapX = box.right - winW;
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300 if (scrolls) overlapX += cm.display.nativeBarWidth;
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301 if (overlapX > 0) {
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302 if (box.right - box.left > winW) {
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303 hints.style.width = (winW - 5) + "px";
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304 overlapX -= (box.right - box.left) - winW;
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305 }
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306 hints.style.left = (left = Math.max(pos.left - overlapX - offsetLeft, 0)) + "px";
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307 }
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308 if (scrolls) for (var node = hints.firstChild; node; node = node.nextSibling)
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309 node.style.paddingRight = cm.display.nativeBarWidth + "px"
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310
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311 cm.addKeyMap(this.keyMap = buildKeyMap(completion, {
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312 moveFocus: function(n, avoidWrap) { widget.changeActive(widget.selectedHint + n, avoidWrap); },
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313 setFocus: function(n) { widget.changeActive(n); },
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314 menuSize: function() { return widget.screenAmount(); },
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315 length: completions.length,
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316 close: function() { completion.close(); },
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317 pick: function() { widget.pick(); },
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318 data: data
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319 }));
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320
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321 if (completion.options.closeOnUnfocus) {
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322 var closingOnBlur;
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323 cm.on("blur", this.onBlur = function() { closingOnBlur = setTimeout(function() { completion.close(); }, 100); });
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324 cm.on("focus", this.onFocus = function() { clearTimeout(closingOnBlur); });
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325 }
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326
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327 cm.on("scroll", this.onScroll = function() {
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328 var curScroll = cm.getScrollInfo(), editor = cm.getWrapperElement().getBoundingClientRect();
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329 if (!startScroll) startScroll = cm.getScrollInfo();
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330 var newTop = top + startScroll.top - curScroll.top;
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331 var point = newTop - (parentWindow.pageYOffset || (ownerDocument.documentElement || ownerDocument.body).scrollTop);
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332 if (!below) point += hints.offsetHeight;
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333 if (point <= editor.top || point >= editor.bottom) return completion.close();
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334 hints.style.top = newTop + "px";
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335 hints.style.left = (left + startScroll.left - curScroll.left) + "px";
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336 });
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337
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338 CodeMirror.on(hints, "dblclick", function(e) {
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339 var t = getHintElement(hints, e.target || e.srcElement);
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340 if (t && t.hintId != null) {widget.changeActive(t.hintId); widget.pick();}
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341 });
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342
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343 CodeMirror.on(hints, "click", function(e) {
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344 var t = getHintElement(hints, e.target || e.srcElement);
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345 if (t && t.hintId != null) {
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346 widget.changeActive(t.hintId);
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347 if (completion.options.completeOnSingleClick) widget.pick();
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348 }
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349 });
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350
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351 CodeMirror.on(hints, "mousedown", function() {
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352 setTimeout(function(){cm.focus();}, 20);
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353 });
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354
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355 // The first hint doesn't need to be scrolled to on init
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356 var selectedHintRange = this.getSelectedHintRange();
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357 if (selectedHintRange.from !== 0 || selectedHintRange.to !== 0) {
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358 this.scrollToActive();
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359 }
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360
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361 CodeMirror.signal(data, "select", completions[this.selectedHint], hints.childNodes[this.selectedHint]);
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362 return true;
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363 }
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364
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365 Widget.prototype = {
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366 close: function() {
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367 if (this.completion.widget != this) return;
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368 this.completion.widget = null;
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369 if (this.hints.parentNode) this.hints.parentNode.removeChild(this.hints);
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370 this.completion.cm.removeKeyMap(this.keyMap);
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371 var input = this.completion.cm.getInputField()
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372 input.removeAttribute("aria-activedescendant")
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373 input.removeAttribute("aria-owns")
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374
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375 var cm = this.completion.cm;
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376 if (this.completion.options.closeOnUnfocus) {
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377 cm.off("blur", this.onBlur);
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378 cm.off("focus", this.onFocus);
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379 }
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380 cm.off("scroll", this.onScroll);
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381 },
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382
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383 disable: function() {
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384 this.completion.cm.removeKeyMap(this.keyMap);
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385 var widget = this;
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386 this.keyMap = {Enter: function() { widget.picked = true; }};
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387 this.completion.cm.addKeyMap(this.keyMap);
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388 },
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389
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390 pick: function() {
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391 this.completion.pick(this.data, this.selectedHint);
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392 },
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393
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394 changeActive: function(i, avoidWrap) {
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395 if (i >= this.data.list.length)
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396 i = avoidWrap ? this.data.list.length - 1 : 0;
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397 else if (i < 0)
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398 i = avoidWrap ? 0 : this.data.list.length - 1;
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399 if (this.selectedHint == i) return;
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400 var node = this.hints.childNodes[this.selectedHint];
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401 if (node) {
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402 node.className = node.className.replace(" " + ACTIVE_HINT_ELEMENT_CLASS, "");
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403 node.removeAttribute("aria-selected")
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404 }
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405 node = this.hints.childNodes[this.selectedHint = i];
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406 node.className += " " + ACTIVE_HINT_ELEMENT_CLASS;
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407 node.setAttribute("aria-selected", "true")
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408 this.completion.cm.getInputField().setAttribute("aria-activedescendant", node.id)
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409 this.scrollToActive()
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410 CodeMirror.signal(this.data, "select", this.data.list[this.selectedHint], node);
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|
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411 },
|
|
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412
|
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413 scrollToActive: function() {
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414 var selectedHintRange = this.getSelectedHintRange();
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415 var node1 = this.hints.childNodes[selectedHintRange.from];
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416 var node2 = this.hints.childNodes[selectedHintRange.to];
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417 var firstNode = this.hints.firstChild;
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418 if (node1.offsetTop < this.hints.scrollTop)
|
|
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419 this.hints.scrollTop = node1.offsetTop - firstNode.offsetTop;
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|
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420 else if (node2.offsetTop + node2.offsetHeight > this.hints.scrollTop + this.hints.clientHeight)
|
|
|
421 this.hints.scrollTop = node2.offsetTop + node2.offsetHeight - this.hints.clientHeight + firstNode.offsetTop;
|
|
|
422 },
|
|
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423
|
|
|
424 screenAmount: function() {
|
|
|
425 return Math.floor(this.hints.clientHeight / this.hints.firstChild.offsetHeight) || 1;
|
|
|
426 },
|
|
|
427
|
|
|
428 getSelectedHintRange: function() {
|
|
|
429 var margin = this.completion.options.scrollMargin || 0;
|
|
|
430 return {
|
|
|
431 from: Math.max(0, this.selectedHint - margin),
|
|
|
432 to: Math.min(this.data.list.length - 1, this.selectedHint + margin),
|
|
|
433 };
|
|
|
434 }
|
|
|
435 };
|
|
|
436
|
|
|
437 function applicableHelpers(cm, helpers) {
|
|
|
438 if (!cm.somethingSelected()) return helpers
|
|
|
439 var result = []
|
|
|
440 for (var i = 0; i < helpers.length; i++)
|
|
|
441 if (helpers[i].supportsSelection) result.push(helpers[i])
|
|
|
442 return result
|
|
|
443 }
|
|
|
444
|
|
|
445 function fetchHints(hint, cm, options, callback) {
|
|
|
446 if (hint.async) {
|
|
|
447 hint(cm, callback, options)
|
|
|
448 } else {
|
|
|
449 var result = hint(cm, options)
|
|
|
450 if (result && result.then) result.then(callback)
|
|
|
451 else callback(result)
|
|
|
452 }
|
|
|
453 }
|
|
|
454
|
|
|
455 function resolveAutoHints(cm, pos) {
|
|
|
456 var helpers = cm.getHelpers(pos, "hint"), words
|
|
|
457 if (helpers.length) {
|
|
|
458 var resolved = function(cm, callback, options) {
|
|
|
459 var app = applicableHelpers(cm, helpers);
|
|
|
460 function run(i) {
|
|
|
461 if (i == app.length) return callback(null)
|
|
|
462 fetchHints(app[i], cm, options, function(result) {
|
|
|
463 if (result && result.list.length > 0) callback(result)
|
|
|
464 else run(i + 1)
|
|
|
465 })
|
|
|
466 }
|
|
|
467 run(0)
|
|
|
468 }
|
|
|
469 resolved.async = true
|
|
|
470 resolved.supportsSelection = true
|
|
|
471 return resolved
|
|
|
472 } else if (words = cm.getHelper(cm.getCursor(), "hintWords")) {
|
|
|
473 return function(cm) { return CodeMirror.hint.fromList(cm, {words: words}) }
|
|
|
474 } else if (CodeMirror.hint.anyword) {
|
|
|
475 return function(cm, options) { return CodeMirror.hint.anyword(cm, options) }
|
|
|
476 } else {
|
|
|
477 return function() {}
|
|
|
478 }
|
|
|
479 }
|
|
|
480
|
|
|
481 CodeMirror.registerHelper("hint", "auto", {
|
|
|
482 resolve: resolveAutoHints
|
|
|
483 });
|
|
|
484
|
|
|
485 CodeMirror.registerHelper("hint", "fromList", function(cm, options) {
|
|
|
486 var cur = cm.getCursor(), token = cm.getTokenAt(cur)
|
|
|
487 var term, from = CodeMirror.Pos(cur.line, token.start), to = cur
|
|
|
488 if (token.start < cur.ch && /\w/.test(token.string.charAt(cur.ch - token.start - 1))) {
|
|
|
489 term = token.string.substr(0, cur.ch - token.start)
|
|
|
490 } else {
|
|
|
491 term = ""
|
|
|
492 from = cur
|
|
|
493 }
|
|
|
494 var found = [];
|
|
|
495 for (var i = 0; i < options.words.length; i++) {
|
|
|
496 var word = options.words[i];
|
|
|
497 if (word.slice(0, term.length) == term)
|
|
|
498 found.push(word);
|
|
|
499 }
|
|
|
500
|
|
|
501 if (found.length) return {list: found, from: from, to: to};
|
|
|
502 });
|
|
|
503
|
|
|
504 CodeMirror.commands.autocomplete = CodeMirror.showHint;
|
|
|
505
|
|
|
506 var defaultOptions = {
|
|
|
507 hint: CodeMirror.hint.auto,
|
|
|
508 completeSingle: true,
|
|
|
509 alignWithWord: true,
|
|
|
510 closeCharacters: /[\s()\[\]{};:>,]/,
|
|
|
511 closeOnPick: true,
|
|
|
512 closeOnUnfocus: true,
|
|
|
513 updateOnCursorActivity: true,
|
|
|
514 completeOnSingleClick: true,
|
|
|
515 container: null,
|
|
|
516 customKeys: null,
|
|
|
517 extraKeys: null,
|
|
|
518 paddingForScrollbar: true,
|
|
|
519 moveOnOverlap: true,
|
|
|
520 };
|
|
|
521
|
|
|
522 CodeMirror.defineOption("hintOptions", null);
|
|
|
523 });
|
