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1 // CodeMirror, copyright (c) by Marijn Haverbeke and others
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2 // Distributed under an MIT license: http://codemirror.net/LICENSE
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3
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4 (function(mod) {
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5 if (typeof exports == "object" && typeof module == "object") // CommonJS
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6 mod(require("../../lib/codemirror"));
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7 else if (typeof define == "function" && define.amd) // AMD
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8 define(["../../lib/codemirror"], mod);
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9 else // Plain browser env
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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("selectionPointer", false, function(cm, val) {
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15 var data = cm.state.selectionPointer;
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16 if (data) {
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17 CodeMirror.off(cm.getWrapperElement(), "mousemove", data.mousemove);
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18 CodeMirror.off(cm.getWrapperElement(), "mouseout", data.mouseout);
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19 CodeMirror.off(window, "scroll", data.windowScroll);
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20 cm.off("cursorActivity", reset);
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21 cm.off("scroll", reset);
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22 cm.state.selectionPointer = null;
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23 cm.display.lineDiv.style.cursor = "";
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24 }
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25 if (val) {
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26 data = cm.state.selectionPointer = {
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27 value: typeof val == "string" ? val : "default",
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28 mousemove: function(event) { mousemove(cm, event); },
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29 mouseout: function(event) { mouseout(cm, event); },
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30 windowScroll: function() { reset(cm); },
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31 rects: null,
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32 mouseX: null, mouseY: null,
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33 willUpdate: false
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34 };
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35 CodeMirror.on(cm.getWrapperElement(), "mousemove", data.mousemove);
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36 CodeMirror.on(cm.getWrapperElement(), "mouseout", data.mouseout);
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37 CodeMirror.on(window, "scroll", data.windowScroll);
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38 cm.on("cursorActivity", reset);
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39 cm.on("scroll", reset);
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40 }
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41 });
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42
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43 function mousemove(cm, event) {
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44 var data = cm.state.selectionPointer;
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45 if (event.buttons == null ? event.which : event.buttons) {
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46 data.mouseX = data.mouseY = null;
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47 } else {
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48 data.mouseX = event.clientX;
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49 data.mouseY = event.clientY;
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50 }
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51 scheduleUpdate(cm);
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52 }
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53
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54 function mouseout(cm, event) {
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55 if (!cm.getWrapperElement().contains(event.relatedTarget)) {
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56 var data = cm.state.selectionPointer;
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57 data.mouseX = data.mouseY = null;
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58 scheduleUpdate(cm);
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59 }
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60 }
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61
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62 function reset(cm) {
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63 cm.state.selectionPointer.rects = null;
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64 scheduleUpdate(cm);
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65 }
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66
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67 function scheduleUpdate(cm) {
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68 if (!cm.state.selectionPointer.willUpdate) {
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69 cm.state.selectionPointer.willUpdate = true;
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70 setTimeout(function() {
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71 update(cm);
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72 cm.state.selectionPointer.willUpdate = false;
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73 }, 50);
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74 }
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75 }
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76
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77 function update(cm) {
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78 var data = cm.state.selectionPointer;
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79 if (!data) return;
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80 if (data.rects == null && data.mouseX != null) {
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81 data.rects = [];
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82 if (cm.somethingSelected()) {
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83 for (var sel = cm.display.selectionDiv.firstChild; sel; sel = sel.nextSibling)
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84 data.rects.push(sel.getBoundingClientRect());
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85 }
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86 }
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87 var inside = false;
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88 if (data.mouseX != null) for (var i = 0; i < data.rects.length; i++) {
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89 var rect = data.rects[i];
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90 if (rect.left <= data.mouseX && rect.right >= data.mouseX &&
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91 rect.top <= data.mouseY && rect.bottom >= data.mouseY)
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92 inside = true;
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93 }
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94 var cursor = inside ? data.value : "";
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95 if (cm.display.lineDiv.style.cursor != cursor)
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96 cm.display.lineDiv.style.cursor = cursor;
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97 }
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98 });
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