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comparison .cms/lib/codemirror/addon/scroll/annotatescrollbar.js @ 0:78edf6b517a0 draft
24.10
author | Coffee CMS <info@coffee-cms.ru> |
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date | Fri, 11 Oct 2024 22:40:23 +0000 |
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-1:000000000000 | 0:78edf6b517a0 |
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1 // CodeMirror, copyright (c) by Marijn Haverbeke and others | |
2 // Distributed under an MIT license: https://codemirror.net/5/LICENSE | |
3 | |
4 (function(mod) { | |
5 if (typeof exports == "object" && typeof module == "object") // CommonJS | |
6 mod(require("../../lib/codemirror")); | |
7 else if (typeof define == "function" && define.amd) // AMD | |
8 define(["../../lib/codemirror"], mod); | |
9 else // Plain browser env | |
10 mod(CodeMirror); | |
11 })(function(CodeMirror) { | |
12 "use strict"; | |
13 | |
14 CodeMirror.defineExtension("annotateScrollbar", function(options) { | |
15 if (typeof options == "string") options = {className: options}; | |
16 return new Annotation(this, options); | |
17 }); | |
18 | |
19 CodeMirror.defineOption("scrollButtonHeight", 0); | |
20 | |
21 function Annotation(cm, options) { | |
22 this.cm = cm; | |
23 this.options = options; | |
24 this.buttonHeight = options.scrollButtonHeight || cm.getOption("scrollButtonHeight"); | |
25 this.annotations = []; | |
26 this.doRedraw = this.doUpdate = null; | |
27 this.div = cm.getWrapperElement().appendChild(document.createElement("div")); | |
28 this.div.style.cssText = "position: absolute; right: 0; top: 0; z-index: 7; pointer-events: none"; | |
29 this.computeScale(); | |
30 | |
31 function scheduleRedraw(delay) { | |
32 clearTimeout(self.doRedraw); | |
33 self.doRedraw = setTimeout(function() { self.redraw(); }, delay); | |
34 } | |
35 | |
36 var self = this; | |
37 cm.on("refresh", this.resizeHandler = function() { | |
38 clearTimeout(self.doUpdate); | |
39 self.doUpdate = setTimeout(function() { | |
40 if (self.computeScale()) scheduleRedraw(20); | |
41 }, 100); | |
42 }); | |
43 cm.on("markerAdded", this.resizeHandler); | |
44 cm.on("markerCleared", this.resizeHandler); | |
45 if (options.listenForChanges !== false) | |
46 cm.on("changes", this.changeHandler = function() { | |
47 scheduleRedraw(250); | |
48 }); | |
49 } | |
50 | |
51 Annotation.prototype.computeScale = function() { | |
52 var cm = this.cm; | |
53 var hScale = (cm.getWrapperElement().clientHeight - cm.display.barHeight - this.buttonHeight * 2) / | |
54 cm.getScrollerElement().scrollHeight | |
55 if (hScale != this.hScale) { | |
56 this.hScale = hScale; | |
57 return true; | |
58 } | |
59 }; | |
60 | |
61 Annotation.prototype.update = function(annotations) { | |
62 this.annotations = annotations; | |
63 this.redraw(); | |
64 }; | |
65 | |
66 Annotation.prototype.redraw = function(compute) { | |
67 if (compute !== false) this.computeScale(); | |
68 var cm = this.cm, hScale = this.hScale; | |
69 | |
70 var frag = document.createDocumentFragment(), anns = this.annotations; | |
71 | |
72 var wrapping = cm.getOption("lineWrapping"); | |
73 var singleLineH = wrapping && cm.defaultTextHeight() * 1.5; | |
74 var curLine = null, curLineObj = null; | |
75 | |
76 function getY(pos, top) { | |
77 if (curLine != pos.line) { | |
78 curLine = pos.line | |
79 curLineObj = cm.getLineHandle(pos.line) | |
80 var visual = cm.getLineHandleVisualStart(curLineObj) | |
81 if (visual != curLineObj) { | |
82 curLine = cm.getLineNumber(visual) | |
83 curLineObj = visual | |
84 } | |
85 } | |
86 if ((curLineObj.widgets && curLineObj.widgets.length) || | |
87 (wrapping && curLineObj.height > singleLineH)) | |
88 return cm.charCoords(pos, "local")[top ? "top" : "bottom"]; | |
89 var topY = cm.heightAtLine(curLineObj, "local"); | |
90 return topY + (top ? 0 : curLineObj.height); | |
91 } | |
92 | |
93 var lastLine = cm.lastLine() | |
94 if (cm.display.barWidth) for (var i = 0, nextTop; i < anns.length; i++) { | |
95 var ann = anns[i]; | |
96 if (ann.to.line > lastLine) continue; | |
97 var top = nextTop || getY(ann.from, true) * hScale; | |
98 var bottom = getY(ann.to, false) * hScale; | |
99 while (i < anns.length - 1) { | |
100 if (anns[i + 1].to.line > lastLine) break; | |
101 nextTop = getY(anns[i + 1].from, true) * hScale; | |
102 if (nextTop > bottom + .9) break; | |
103 ann = anns[++i]; | |
104 bottom = getY(ann.to, false) * hScale; | |
105 } | |
106 if (bottom == top) continue; | |
107 var height = Math.max(bottom - top, 3); | |
108 | |
109 var elt = frag.appendChild(document.createElement("div")); | |
110 elt.style.cssText = "position: absolute; right: 0px; width: " + Math.max(cm.display.barWidth - 1, 2) + "px; top: " | |
111 + (top + this.buttonHeight) + "px; height: " + height + "px"; | |
112 elt.className = this.options.className; | |
113 if (ann.id) { | |
114 elt.setAttribute("annotation-id", ann.id); | |
115 } | |
116 } | |
117 this.div.textContent = ""; | |
118 this.div.appendChild(frag); | |
119 }; | |
120 | |
121 Annotation.prototype.clear = function() { | |
122 this.cm.off("refresh", this.resizeHandler); | |
123 this.cm.off("markerAdded", this.resizeHandler); | |
124 this.cm.off("markerCleared", this.resizeHandler); | |
125 if (this.changeHandler) this.cm.off("changes", this.changeHandler); | |
126 this.div.parentNode.removeChild(this.div); | |
127 }; | |
128 }); |