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authorWu Cheng-Han2015-05-04 15:53:29 +0800
committerWu Cheng-Han2015-05-04 15:53:29 +0800
commit4b0ca55eb79e963523eb6c8197825e9e8ae904e2 (patch)
tree574f3923af77b37b41dbf1b00bcd7827ef724a28 /public/vendor/codemirror/addon/scroll/simplescrollbars.js
parent61eb11d23c65c9e5c493c67d055f785cbec139e2 (diff)
First commit, version 0.2.7
Diffstat (limited to 'public/vendor/codemirror/addon/scroll/simplescrollbars.js')
-rwxr-xr-xpublic/vendor/codemirror/addon/scroll/simplescrollbars.js147
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diff --git a/public/vendor/codemirror/addon/scroll/simplescrollbars.js b/public/vendor/codemirror/addon/scroll/simplescrollbars.js
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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";
+
+ 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.moveTo = function(pos, update) {
+ if (pos < 0) pos = 0;
+ if (pos > this.total - this.screen) pos = this.total - this.screen;
+ if (pos == this.pos) return;
+ this.pos = pos;
+ this.inner.style[this.orientation == "horizontal" ? "left" : "top"] =
+ (pos * (this.size / this.total)) + "px";
+ if (update !== false) this.scroll(pos, this.orientation);
+ };
+
+ var minButtonSize = 10;
+
+ Bar.prototype.update = function(scrollSize, clientSize, barSize) {
+ 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.inner.style[this.orientation == "horizontal" ? "left" : "top"] =
+ this.pos * (this.size / this.total) + "px";
+ };
+
+ 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.display = "block";
+ 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.moveTo(pos, false);
+ };
+
+ SimpleScrollbars.prototype.setScrollLeft = function(pos) {
+ this.horiz.moveTo(pos, false);
+ };
+
+ 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);
+ };
+});