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File: FrontEndScripts/libs/codemirror/addon/scroll/annotatescrollbar.js

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  Classes of Aleksey Nemiro   PHP Small Server Administrator   FrontEndScripts/libs/codemirror/addon/scroll/annotatescrollbar.js   Download  
File: FrontEndScripts/libs/codemirror/addon/scroll/annotatescrollbar.js
Role: Auxiliary data
Content type: text/plain
Description: Auxiliary data
Class: PHP Small Server Administrator
Web panel for small Debian and Ubuntu servers
Author: By
Last change:
Date: 7 years ago
Size: 4,250 bytes
 

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// CodeMirror, copyright (c) by Marijn Haverbeke and others // Distributed under an MIT license: http://codemirror.net/LICENSE (function(mod) { if (typeof exports == "object" && typeof module == "object") // CommonJS mod(require("../../lib/codemirror")); else if (typeof define == "function" && define.amd) // AMD define(["../../lib/codemirror"], mod); else // Plain browser env mod(CodeMirror); })(function(CodeMirror) { "use strict"; CodeMirror.defineExtension("annotateScrollbar", function(options) { if (typeof options == "string") options = {className: options}; return new Annotation(this, options); }); CodeMirror.defineOption("scrollButtonHeight", 0); function Annotation(cm, options) { this.cm = cm; this.options = options; this.buttonHeight = options.scrollButtonHeight || cm.getOption("scrollButtonHeight"); this.annotations = []; this.doRedraw = this.doUpdate = null; this.div = cm.getWrapperElement().appendChild(document.createElement("div")); this.div.style.cssText = "position: absolute; right: 0; top: 0; z-index: 7; pointer-events: none"; this.computeScale(); function scheduleRedraw(delay) { clearTimeout(self.doRedraw); self.doRedraw = setTimeout(function() { self.redraw(); }, delay); } var self = this; cm.on("refresh", this.resizeHandler = function() { clearTimeout(self.doUpdate); self.doUpdate = setTimeout(function() { if (self.computeScale()) scheduleRedraw(20); }, 100); }); cm.on("markerAdded", this.resizeHandler); cm.on("markerCleared", this.resizeHandler); if (options.listenForChanges !== false) cm.on("change", this.changeHandler = function() { scheduleRedraw(250); }); } Annotation.prototype.computeScale = function() { var cm = this.cm; var hScale = (cm.getWrapperElement().clientHeight - cm.display.barHeight - this.buttonHeight * 2) / cm.getScrollerElement().scrollHeight if (hScale != this.hScale) { this.hScale = hScale; return true; } }; Annotation.prototype.update = function(annotations) { this.annotations = annotations; this.redraw(); }; Annotation.prototype.redraw = function(compute) { if (compute !== false) this.computeScale(); var cm = this.cm, hScale = this.hScale; var frag = document.createDocumentFragment(), anns = this.annotations; var wrapping = cm.getOption("lineWrapping"); var singleLineH = wrapping && cm.defaultTextHeight() * 1.5; var curLine = null, curLineObj = null; function getY(pos, top) { if (curLine != pos.line) { curLine = pos.line; curLineObj = cm.getLineHandle(curLine); } if (wrapping && curLineObj.height > singleLineH) return cm.charCoords(pos, "local")[top ? "top" : "bottom"]; var topY = cm.heightAtLine(curLineObj, "local"); return topY + (top ? 0 : curLineObj.height); } if (cm.display.barWidth) for (var i = 0, nextTop; i < anns.length; i++) { var ann = anns[i]; var top = nextTop || getY(ann.from, true) * hScale; var bottom = getY(ann.to, false) * hScale; while (i < anns.length - 1) { nextTop = getY(anns[i + 1].from, true) * hScale; if (nextTop > bottom + .9) break; ann = anns[++i]; bottom = getY(ann.to, false) * hScale; } if (bottom == top) continue; var height = Math.max(bottom - top, 3); var elt = frag.appendChild(document.createElement("div")); elt.style.cssText = "position: absolute; right: 0px; width: " + Math.max(cm.display.barWidth - 1, 2) + "px; top: " + (top + this.buttonHeight) + "px; height: " + height + "px"; elt.className = this.options.className; if (ann.id) { elt.setAttribute("annotation-id", ann.id); } } this.div.textContent = ""; this.div.appendChild(frag); }; Annotation.prototype.clear = function() { this.cm.off("refresh", this.resizeHandler); this.cm.off("markerAdded", this.resizeHandler); this.cm.off("markerCleared", this.resizeHandler); if (this.changeHandler) this.cm.off("change", this.changeHandler); this.div.parentNode.removeChild(this.div); }; });