mirror of
https://github.com/overleaf/overleaf.git
synced 2024-12-27 18:22:03 +00:00
204 lines
7.1 KiB
JavaScript
Executable file
204 lines
7.1 KiB
JavaScript
Executable file
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Distributed under the BSD license:
|
|
*
|
|
* Copyright (c) 2010, Ajax.org B.V.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* * Neither the name of Ajax.org B.V. nor the
|
|
* names of its contributors may be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL AJAX.ORG B.V. BE LIABLE FOR ANY
|
|
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
|
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
|
|
define(function(require, exports, module) {
|
|
"use strict";
|
|
|
|
var oop = require("./lib/oop");
|
|
var dom = require("./lib/dom");
|
|
var event = require("./lib/event");
|
|
var EventEmitter = require("./lib/event_emitter").EventEmitter;
|
|
|
|
/**
|
|
* A set of methods for setting and retrieving the editor's scrollbar.
|
|
* @class ScrollBar
|
|
**/
|
|
|
|
/**
|
|
* Creates a new `ScrollBar`. `parent` is the owner of the scroll bar.
|
|
* @param {DOMElement} parent A DOM element
|
|
*
|
|
* @constructor
|
|
**/
|
|
var ScrollBarV = function(parent, renderer) {
|
|
this.element = dom.createElement("div");
|
|
this.element.className = "ace_scrollbar";
|
|
|
|
this.inner = dom.createElement("div");
|
|
this.inner.className = "ace_scrollbar-inner";
|
|
this.element.appendChild(this.inner);
|
|
|
|
parent.appendChild(this.element);
|
|
|
|
// in OSX lion the scrollbars appear to have no width. In this case resize the
|
|
// element to show the scrollbar but still pretend that the scrollbar has a width
|
|
// of 0px
|
|
// in Firefox 6+ scrollbar is hidden if element has the same width as scrollbar
|
|
// make element a little bit wider to retain scrollbar when page is zoomed
|
|
renderer.$scrollbarWidth =
|
|
this.width = dom.scrollbarWidth(parent.ownerDocument);
|
|
renderer.$scrollbarWidth =
|
|
this.width = dom.scrollbarWidth(parent.ownerDocument);
|
|
this.fullWidth = this.width;
|
|
this.inner.style.width =
|
|
this.element.style.width = (this.width || 15) + 5 + "px";
|
|
this.setVisible(false);
|
|
this.element.style.overflowY = "scroll";
|
|
|
|
event.addListener(this.element, "scroll", this.onScrollV.bind(this));
|
|
event.addListener(this.element, "mousedown", event.preventDefault);
|
|
};
|
|
|
|
var ScrollBarH = function(parent, renderer) {
|
|
this.element = dom.createElement("div");
|
|
this.element.className = "ace_scrollbar-h";
|
|
|
|
this.inner = dom.createElement("div");
|
|
this.inner.className = "ace_scrollbar-inner";
|
|
this.element.appendChild(this.inner);
|
|
|
|
parent.appendChild(this.element);
|
|
|
|
// in OSX lion the scrollbars appear to have no width. In this case resize the
|
|
// element to show the scrollbar but still pretend that the scrollbar has a width
|
|
// of 0px
|
|
// in Firefox 6+ scrollbar is hidden if element has the same width as scrollbar
|
|
// make element a little bit wider to retain scrollbar when page is zoomed
|
|
this.height = renderer.$scrollbarWidth;
|
|
this.fullHeight = this.height;
|
|
this.inner.style.height =
|
|
this.element.style.height = (this.height || 15) + 5 + "px";
|
|
this.setVisible(false);
|
|
this.element.style.overflowX = "scroll";
|
|
|
|
event.addListener(this.element, "scroll", this.onScrollH.bind(this));
|
|
event.addListener(this.element, "mousedown", event.preventDefault);
|
|
};
|
|
|
|
(function() {
|
|
oop.implement(this, EventEmitter);
|
|
|
|
this.setVisible = function(show) {
|
|
if (show) {
|
|
this.element.style.display = "";
|
|
if (this.fullWidth)
|
|
this.width = this.fullWidth;
|
|
if (this.fullHeight)
|
|
this.height = this.fullHeight;
|
|
} else {
|
|
this.element.style.display = "none";
|
|
this.height = this.width = 0;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Emitted when the scroll bar, well, scrolls.
|
|
* @event scroll
|
|
* @param {Object} e Contains one property, `"data"`, which indicates the current scroll top position
|
|
**/
|
|
this.onScrollV = function() {
|
|
if (!this.skipEvent) {
|
|
this.scrollTop = this.element.scrollTop;
|
|
this._emit("scroll", {data: this.scrollTop});
|
|
}
|
|
this.skipEvent = false;
|
|
};
|
|
this.onScrollH = function() {
|
|
if (!this.skipEvent) {
|
|
this.scrollLeft = this.element.scrollLeft;
|
|
this._emit("scroll", {data: this.scrollLeft});
|
|
}
|
|
this.skipEvent = false;
|
|
};
|
|
|
|
/**
|
|
* Returns the width of the scroll bar.
|
|
* @returns {Number}
|
|
**/
|
|
this.getWidth = function() {
|
|
return this.width;
|
|
};
|
|
|
|
this.getHeight = function() {
|
|
return this.height;
|
|
};
|
|
|
|
/**
|
|
* Sets the height of the scroll bar, in pixels.
|
|
* @param {Number} height The new height
|
|
**/
|
|
this.setHeight = function(height) {
|
|
this.element.style.height = height + "px";
|
|
};
|
|
|
|
this.setWidth = function(width) {
|
|
this.element.style.width = width + "px";
|
|
};
|
|
|
|
/**
|
|
* Sets the inner height of the scroll bar, in pixels.
|
|
* @param {Number} height The new inner height
|
|
**/
|
|
this.setInnerHeight = function(height) {
|
|
this.inner.style.height = height + "px";
|
|
};
|
|
|
|
this.setInnerWidth = function(width) {
|
|
this.inner.style.width = width + "px";
|
|
};
|
|
|
|
/**
|
|
* Sets the scroll top of the scroll bar.
|
|
* @param {Number} scrollTop The new scroll top
|
|
**/
|
|
// on chrome 17+ for small zoom levels after calling this function
|
|
// this.element.scrollTop != scrollTop which makes page to scroll up.
|
|
this.setScrollTop = function(scrollTop) {
|
|
if (this.scrollTop != scrollTop) {
|
|
this.skipEvent = true;
|
|
this.scrollTop = this.element.scrollTop = scrollTop;
|
|
}
|
|
};
|
|
this.setScrollLeft = function(scrollLeft) {
|
|
if (this.scrollLeft != scrollLeft) {
|
|
this.skipEvent = true;
|
|
this.scrollLeft = this.element.scrollLeft = scrollLeft;
|
|
}
|
|
};
|
|
|
|
}).call(ScrollBarV.prototype);
|
|
ScrollBarH.prototype = ScrollBarV.prototype;
|
|
|
|
|
|
|
|
exports.ScrollBar = ScrollBarV; // backward compatibility
|
|
exports.ScrollBarV = ScrollBarV;
|
|
exports.ScrollBarH = ScrollBarH;
|
|
});
|