openrat-cms

simplescrollbars.js (5462B)

---

 // 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";
 
   function Bar(cls, orientation, scroll) {
     this.orientation = orientation;
     this.scroll = scroll;
     this.screen = this.total = this.size = 1;
     this.pos = 0;
 
     this.node = document.createElement("div");
     this.node.className = cls + "-" + orientation;
     this.inner = this.node.appendChild(document.createElement("div"));
 
     var self = this;
     CodeMirror.on(this.inner, "mousedown", function(e) {
       if (e.which != 1) return;
       CodeMirror.e_preventDefault(e);
       var axis = self.orientation == "horizontal" ? "pageX" : "pageY";
       var start = e[axis], startpos = self.pos;
       function done() {
         CodeMirror.off(document, "mousemove", move);
         CodeMirror.off(document, "mouseup", done);
       }
       function move(e) {
         if (e.which != 1) return done();
         self.moveTo(startpos + (e[axis] - start) * (self.total / self.size));
       }
       CodeMirror.on(document, "mousemove", move);
       CodeMirror.on(document, "mouseup", done);
     });
 
     CodeMirror.on(this.node, "click", function(e) {
       CodeMirror.e_preventDefault(e);
       var innerBox = self.inner.getBoundingClientRect(), where;
       if (self.orientation == "horizontal")
         where = e.clientX < innerBox.left ? -1 : e.clientX > innerBox.right ? 1 : 0;
       else
         where = e.clientY < innerBox.top ? -1 : e.clientY > innerBox.bottom ? 1 : 0;
       self.moveTo(self.pos + where * self.screen);
     });
 
     function onWheel(e) {
       var moved = CodeMirror.wheelEventPixels(e)[self.orientation == "horizontal" ? "x" : "y"];
       var oldPos = self.pos;
       self.moveTo(self.pos + moved);
       if (self.pos != oldPos) CodeMirror.e_preventDefault(e);
     }
     CodeMirror.on(this.node, "mousewheel", onWheel);
     CodeMirror.on(this.node, "DOMMouseScroll", onWheel);
   }
 
   Bar.prototype.setPos = function(pos, force) {
     if (pos < 0) pos = 0;
     if (pos > this.total - this.screen) pos = this.total - this.screen;
     if (!force && pos == this.pos) return false;
     this.pos = pos;
     this.inner.style[this.orientation == "horizontal" ? "left" : "top"] =
       (pos * (this.size / this.total)) + "px";
     return true
   };
 
   Bar.prototype.moveTo = function(pos) {
     if (this.setPos(pos)) this.scroll(pos, this.orientation);
   }
 
   var minButtonSize = 10;
 
   Bar.prototype.update = function(scrollSize, clientSize, barSize) {
     var sizeChanged = this.screen != clientSize || this.total != scrollSize || this.size != barSize
     if (sizeChanged) {
       this.screen = clientSize;
       this.total = scrollSize;
       this.size = barSize;
     }
 
     var buttonSize = this.screen * (this.size / this.total);
     if (buttonSize < minButtonSize) {
       this.size -= minButtonSize - buttonSize;
       buttonSize = minButtonSize;
     }
     this.inner.style[this.orientation == "horizontal" ? "width" : "height"] =
       buttonSize + "px";
     this.setPos(this.pos, sizeChanged);
   };
 
   function SimpleScrollbars(cls, place, scroll) {
     this.addClass = cls;
     this.horiz = new Bar(cls, "horizontal", scroll);
     place(this.horiz.node);
     this.vert = new Bar(cls, "vertical", scroll);
     place(this.vert.node);
     this.width = null;
   }
 
   SimpleScrollbars.prototype.update = function(measure) {
     if (this.width == null) {
       var style = window.getComputedStyle ? window.getComputedStyle(this.horiz.node) : this.horiz.node.currentStyle;
       if (style) this.width = parseInt(style.height);
     }
     var width = this.width || 0;
 
     var needsH = measure.scrollWidth > measure.clientWidth + 1;
     var needsV = measure.scrollHeight > measure.clientHeight + 1;
     this.vert.node.style.display = needsV ? "block" : "none";
     this.horiz.node.style.display = needsH ? "block" : "none";
 
     if (needsV) {
       this.vert.update(measure.scrollHeight, measure.clientHeight,
                        measure.viewHeight - (needsH ? width : 0));
       this.vert.node.style.bottom = needsH ? width + "px" : "0";
     }
     if (needsH) {
       this.horiz.update(measure.scrollWidth, measure.clientWidth,
                         measure.viewWidth - (needsV ? width : 0) - measure.barLeft);
       this.horiz.node.style.right = needsV ? width + "px" : "0";
       this.horiz.node.style.left = measure.barLeft + "px";
     }
 
     return {right: needsV ? width : 0, bottom: needsH ? width : 0};
   };
 
   SimpleScrollbars.prototype.setScrollTop = function(pos) {
     this.vert.setPos(pos);
   };
 
   SimpleScrollbars.prototype.setScrollLeft = function(pos) {
     this.horiz.setPos(pos);
   };
 
   SimpleScrollbars.prototype.clear = function() {
     var parent = this.horiz.node.parentNode;
     parent.removeChild(this.horiz.node);
     parent.removeChild(this.vert.node);
   };
 
   CodeMirror.scrollbarModel.simple = function(place, scroll) {
     return new SimpleScrollbars("CodeMirror-simplescroll", place, scroll);
   };
   CodeMirror.scrollbarModel.overlay = function(place, scroll) {
     return new SimpleScrollbars("CodeMirror-overlayscroll", place, scroll);
   };
 });