DocumentServer/OfficeWeb/apps/common/main/lib/mods/perfect-scrollbar.js
Alexander Trofimov a10605c91f bug fix
2015-06-25 11:27:08 +03:00

589 lines
28 KiB
JavaScript

/*
* (c) Copyright Ascensio System SIA 2010-2015
*
* This program is a free software product. You can redistribute it and/or
* modify it under the terms of the GNU Affero General Public License (AGPL)
* version 3 as published by the Free Software Foundation. In accordance with
* Section 7(a) of the GNU AGPL its Section 15 shall be amended to the effect
* that Ascensio System SIA expressly excludes the warranty of non-infringement
* of any third-party rights.
*
* This program is distributed WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For
* details, see the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
*
* You can contact Ascensio System SIA at Lubanas st. 125a-25, Riga, Latvia,
* EU, LV-1021.
*
* The interactive user interfaces in modified source and object code versions
* of the Program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU AGPL version 3.
*
* Pursuant to Section 7(b) of the License you must retain the original Product
* logo when distributing the program. Pursuant to Section 7(e) we decline to
* grant you any rights under trademark law for use of our trademarks.
*
* All the Product's GUI elements, including illustrations and icon sets, as
* well as technical writing content are licensed under the terms of the
* Creative Commons Attribution-ShareAlike 4.0 International. See the License
* terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
*
*/
(function (factory) {
if (typeof define === "function" && define.amd) {
define(["jquery"], factory);
} else {
if (typeof exports === "object") {
factory(require("jquery"));
} else {
factory(jQuery);
}
}
} (function ($) {
var defaultSettings = {
wheelSpeed: 10,
wheelPropagation: false,
minScrollbarLength: null,
useBothWheelAxes: false,
useKeyboard: true,
suppressScrollX: false,
suppressScrollY: false,
scrollXMarginOffset: 0,
scrollYMarginOffset: 0,
includePadding: false,
includeMargin: true
};
var getEventClassName = (function () {
var incrementingId = 0;
return function () {
var id = incrementingId;
incrementingId += 1;
return ".perfect-scrollbar-" + id;
};
} ());
$.fn.perfectScrollbar = function (suppliedSettings, option) {
return this.each(function () {
var settings = $.extend(true, {},
defaultSettings),
$this = $(this);
if (typeof suppliedSettings === "object") {
$.extend(true, settings, suppliedSettings);
} else {
option = suppliedSettings;
}
if (option === "update") {
if ($this.data("perfect-scrollbar-update")) {
$this.data("perfect-scrollbar-update")();
}
return $this;
} else {
if (option === "destroy") {
if ($this.data("perfect-scrollbar-destroy")) {
$this.data("perfect-scrollbar-destroy")();
}
return $this;
}
}
if ($this.data("perfect-scrollbar")) {
return $this.data("perfect-scrollbar");
}
$this.addClass("ps-container");
var $scrollbarXRail = $("<div class='ps-scrollbar-x-rail'></div>").appendTo($this),
$scrollbarYRail = $("<div class='ps-scrollbar-y-rail'></div>").appendTo($this),
$scrollbarX = $("<div class='ps-scrollbar-x'></div>").appendTo($scrollbarXRail),
$scrollbarY = $("<div class='ps-scrollbar-y'></div>").appendTo($scrollbarYRail),
scrollbarXActive,
scrollbarYActive,
containerWidth,
containerHeight,
contentWidth,
contentHeight,
scrollbarXWidth,
scrollbarXLeft,
scrollbarXBottom = parseInt($scrollbarXRail.css("bottom"), 10),
scrollbarYHeight,
scrollbarYTop,
scrollbarYRight = parseInt($scrollbarYRail.css("right"), 10),
scrollbarYRailHeight,
eventClassName = getEventClassName();
var updateContentScrollTop = function (currentTop, deltaY) {
var newTop = currentTop + deltaY,
maxTop = scrollbarYRailHeight - scrollbarYHeight;
if (newTop < 0) {
scrollbarYTop = 0;
} else {
if (newTop > maxTop) {
scrollbarYTop = maxTop;
} else {
scrollbarYTop = newTop;
}
}
var scrollTop = parseInt(scrollbarYTop * (contentHeight - containerHeight) / (scrollbarYRailHeight - scrollbarYHeight), 10);
$this.scrollTop(scrollTop);
$scrollbarXRail.css({
bottom: scrollbarXBottom - scrollTop
});
};
var updateContentScrollLeft = function (currentLeft, deltaX) {
var newLeft = currentLeft + deltaX,
maxLeft = containerWidth - scrollbarXWidth;
if (newLeft < 0) {
scrollbarXLeft = 0;
} else {
if (newLeft > maxLeft) {
scrollbarXLeft = maxLeft;
} else {
scrollbarXLeft = newLeft;
}
}
var scrollLeft = parseInt(scrollbarXLeft * (contentWidth - containerWidth) / (containerWidth - scrollbarXWidth), 10);
$this.scrollLeft(scrollLeft);
$scrollbarYRail.css({
right: scrollbarYRight - scrollLeft
});
};
var getSettingsAdjustedThumbSize = function (thumbSize) {
if (settings.minScrollbarLength) {
thumbSize = Math.max(thumbSize, settings.minScrollbarLength);
}
return thumbSize;
};
var updateScrollbarCss = function () {
$scrollbarXRail.css({
left: $this.scrollLeft(),
bottom: scrollbarXBottom - $this.scrollTop(),
width: containerWidth,
display: scrollbarXActive ? "inherit" : "none"
});
if ($scrollbarYRail.hasClass("in-scrolling")) {
$scrollbarYRail.css({
right: scrollbarYRight - $this.scrollLeft(),
height: scrollbarYRailHeight,
display: scrollbarYActive ? "inherit" : "none"
});
} else {
$scrollbarYRail.css({
top: $this.scrollTop(),
right: scrollbarYRight - $this.scrollLeft(),
height: scrollbarYRailHeight,
display: scrollbarYActive ? "inherit" : "none"
});
}
$scrollbarX.css({
left: scrollbarXLeft,
width: scrollbarXWidth
});
$scrollbarY.css({
top: scrollbarYTop,
height: scrollbarYHeight
});
};
var updateBarSizeAndPosition = function () {
containerWidth = settings.includePadding ? $this.innerWidth() : $this.width();
containerHeight = settings.includePadding ? $this.innerHeight() : $this.height();
scrollbarYRailHeight = containerHeight - (settings.includeMargin ? (parseInt($scrollbarYRail.css("margin-top")) + parseInt($scrollbarYRail.css("margin-bottom"))) : 0);
contentWidth = $this.prop("scrollWidth");
contentHeight = $this.prop("scrollHeight");
if (!settings.suppressScrollX && containerWidth + settings.scrollXMarginOffset < contentWidth) {
scrollbarXActive = true;
scrollbarXWidth = getSettingsAdjustedThumbSize(parseInt(containerWidth * containerWidth / contentWidth, 10));
scrollbarXLeft = parseInt($this.scrollLeft() * (containerWidth - scrollbarXWidth) / (contentWidth - containerWidth), 10);
} else {
scrollbarXActive = false;
scrollbarXWidth = 0;
scrollbarXLeft = 0;
$this.scrollLeft(0);
}
if (!settings.suppressScrollY && containerHeight + settings.scrollYMarginOffset < contentHeight) {
scrollbarYActive = true;
scrollbarYHeight = getSettingsAdjustedThumbSize(parseInt(scrollbarYRailHeight * containerHeight / contentHeight, 10));
scrollbarYTop = parseInt($this.scrollTop() * (scrollbarYRailHeight - scrollbarYHeight) / (contentHeight - containerHeight), 10);
} else {
scrollbarYActive = false;
scrollbarYHeight = 0;
scrollbarYTop = 0;
$this.scrollTop(0);
}
if (scrollbarYTop >= scrollbarYRailHeight - scrollbarYHeight) {
scrollbarYTop = scrollbarYRailHeight - scrollbarYHeight;
}
if (scrollbarXLeft >= containerWidth - scrollbarXWidth) {
scrollbarXLeft = containerWidth - scrollbarXWidth;
}
updateScrollbarCss();
if (settings.onChange) {
settings.onChange(this);
}
};
var bindMouseScrollXHandler = function () {
var currentLeft, currentPageX;
$scrollbarX.bind("mousedown" + eventClassName, function (e) {
currentPageX = e.pageX;
currentLeft = $scrollbarX.position().left;
$scrollbarXRail.addClass("in-scrolling");
e.stopPropagation();
e.preventDefault();
});
$(document).bind("mousemove" + eventClassName, function (e) {
if ($scrollbarXRail.hasClass("in-scrolling")) {
updateContentScrollLeft(currentLeft, e.pageX - currentPageX);
e.stopPropagation();
e.preventDefault();
}
});
$(document).bind("mouseup" + eventClassName, function (e) {
if ($scrollbarXRail.hasClass("in-scrolling")) {
$scrollbarXRail.removeClass("in-scrolling");
}
});
currentLeft = currentPageX = null;
};
var bindMouseScrollYHandler = function () {
var currentTop, currentPageY;
$scrollbarY.bind("mousedown" + eventClassName, function (e) {
currentPageY = e.pageY;
currentTop = $scrollbarY.position().top;
$scrollbarYRail.addClass("in-scrolling");
var margin = parseInt($scrollbarYRail.css("margin-top"));
var rect = $scrollbarYRail[0].getBoundingClientRect();
$scrollbarYRail.css({
position: "fixed",
left: rect.left,
top: rect.top - margin
});
e.stopPropagation();
e.preventDefault();
});
$(document).bind("mousemove" + eventClassName, function (e) {
if ($scrollbarYRail.hasClass("in-scrolling")) {
updateContentScrollTop(currentTop, e.pageY - currentPageY);
e.stopPropagation();
e.preventDefault();
}
});
$(document).bind("mouseup" + eventClassName, function (e) {
if ($scrollbarYRail.hasClass("in-scrolling")) {
$scrollbarYRail.removeClass("in-scrolling");
$scrollbarYRail.css({
position: "",
left: "",
top: ""
});
updateScrollbarCss();
}
});
currentTop = currentPageY = null;
};
var shouldPreventDefault = function (deltaX, deltaY) {
var scrollTop = $this.scrollTop();
if (deltaX === 0) {
if (!scrollbarYActive) {
return false;
}
if ((scrollTop === 0 && deltaY > 0) || (scrollTop >= contentHeight - containerHeight && deltaY < 0)) {
return !settings.wheelPropagation;
}
}
var scrollLeft = $this.scrollLeft();
if (deltaY === 0) {
if (!scrollbarXActive) {
return false;
}
if ((scrollLeft === 0 && deltaX < 0) || (scrollLeft >= contentWidth - containerWidth && deltaX > 0)) {
return !settings.wheelPropagation;
}
}
return true;
};
var bindMouseWheelHandler = function () {
settings.wheelSpeed /= 10;
var shouldPrevent = false;
$this.bind("mousewheel" + eventClassName, function (e, deprecatedDelta, deprecatedDeltaX, deprecatedDeltaY) {
var deltaX = e.deltaX * e.deltaFactor || deprecatedDeltaX,
deltaY = e.deltaY * e.deltaFactor || deprecatedDeltaY;
if (e && e.target && (e.target.type === "textarea" || e.target.type === "input")) {
e.stopImmediatePropagation();
e.preventDefault();
var scroll = $(e.target).scrollTop(),
wheelDeltaY = 0;
if (e.originalEvent) {
if (e.originalEvent.wheelDelta) {
wheelDeltaY = e.originalEvent.wheelDelta / -40;
}
if (e.originalEvent.deltaY) {
wheelDeltaY = e.originalEvent.deltaY;
}
if (e.originalEvent.detail) {
wheelDeltaY = e.originalEvent.detail;
}
}
$(e.target).scrollTop(scroll - wheelDeltaY);
return;
}
shouldPrevent = false;
if (!settings.useBothWheelAxes) {
$this.scrollTop($this.scrollTop() - (deltaY * settings.wheelSpeed));
$this.scrollLeft($this.scrollLeft() + (deltaX * settings.wheelSpeed));
} else {
if (scrollbarYActive && !scrollbarXActive) {
if (deltaY) {
$this.scrollTop($this.scrollTop() - (deltaY * settings.wheelSpeed));
} else {
$this.scrollTop($this.scrollTop() + (deltaX * settings.wheelSpeed));
}
shouldPrevent = true;
} else {
if (scrollbarXActive && !scrollbarYActive) {
if (deltaX) {
$this.scrollLeft($this.scrollLeft() + (deltaX * settings.wheelSpeed));
} else {
$this.scrollLeft($this.scrollLeft() - (deltaY * settings.wheelSpeed));
}
shouldPrevent = true;
}
}
}
updateBarSizeAndPosition();
shouldPrevent = (shouldPrevent || shouldPreventDefault(deltaX, deltaY));
if (shouldPrevent) {
e.stopPropagation();
e.preventDefault();
}
});
$this.bind("MozMousePixelScroll" + eventClassName, function (e) {
if (shouldPrevent) {
e.preventDefault();
}
});
};
var bindKeyboardHandler = function () {
var hovered = false;
$this.bind("mouseenter" + eventClassName, function (e) {
hovered = true;
});
$this.bind("mouseleave" + eventClassName, function (e) {
hovered = false;
});
var shouldPrevent = false;
$(document).bind("keydown" + eventClassName, function (e) {
if (!hovered || $(document.activeElement).is(":input,[contenteditable]")) {
return;
}
var deltaX = 0,
deltaY = 0;
switch (e.which) {
case 37:
deltaX = -30;
break;
case 38:
deltaY = 30;
break;
case 39:
deltaX = 30;
break;
case 40:
deltaY = -30;
break;
case 33:
deltaY = 90;
break;
case 32:
case 34:
deltaY = -90;
break;
case 35:
deltaY = -containerHeight;
break;
case 36:
deltaY = containerHeight;
break;
default:
return;
}
$this.scrollTop($this.scrollTop() - deltaY);
$this.scrollLeft($this.scrollLeft() + deltaX);
shouldPrevent = shouldPreventDefault(deltaX, deltaY);
if (shouldPrevent) {
e.preventDefault();
}
});
};
var bindRailClickHandler = function () {
var stopPropagation = function (e) {
e.stopPropagation();
};
$scrollbarY.bind("click" + eventClassName, stopPropagation);
$scrollbarYRail.bind("click" + eventClassName, function (e) {
var halfOfScrollbarLength = parseInt(scrollbarYHeight / 2, 10),
positionTop = e.pageY - $scrollbarYRail.offset().top - halfOfScrollbarLength,
maxPositionTop = scrollbarYRailHeight - scrollbarYHeight,
positionRatio = positionTop / maxPositionTop;
if (positionRatio < 0) {
positionRatio = 0;
} else {
if (positionRatio > 1) {
positionRatio = 1;
}
}
$this.scrollTop((contentHeight - containerHeight) * positionRatio);
});
$scrollbarX.bind("click" + eventClassName, stopPropagation);
$scrollbarXRail.bind("click" + eventClassName, function (e) {
var halfOfScrollbarLength = parseInt(scrollbarXWidth / 2, 10),
positionLeft = e.pageX - $scrollbarXRail.offset().left - halfOfScrollbarLength,
maxPositionLeft = containerWidth - scrollbarXWidth,
positionRatio = positionLeft / maxPositionLeft;
if (positionRatio < 0) {
positionRatio = 0;
} else {
if (positionRatio > 1) {
positionRatio = 1;
}
}
$this.scrollLeft((contentWidth - containerWidth) * positionRatio);
});
};
var bindMobileTouchHandler = function () {
var applyTouchMove = function (differenceX, differenceY) {
$this.scrollTop($this.scrollTop() - differenceY);
$this.scrollLeft($this.scrollLeft() - differenceX);
updateBarSizeAndPosition();
};
var startCoords = {},
startTime = 0,
speed = {},
breakingProcess = null,
inGlobalTouch = false;
$(window).bind("touchstart" + eventClassName, function (e) {
inGlobalTouch = true;
});
$(window).bind("touchend" + eventClassName, function (e) {
inGlobalTouch = false;
});
$this.bind("touchstart" + eventClassName, function (e) {
var touch = e.originalEvent.targetTouches[0];
startCoords.pageX = touch.pageX;
startCoords.pageY = touch.pageY;
startTime = (new Date()).getTime();
if (breakingProcess !== null) {
clearInterval(breakingProcess);
}
e.stopPropagation();
});
$this.bind("touchmove" + eventClassName, function (e) {
if (!inGlobalTouch && e.originalEvent.targetTouches.length === 1) {
var touch = e.originalEvent.targetTouches[0];
var currentCoords = {};
currentCoords.pageX = touch.pageX;
currentCoords.pageY = touch.pageY;
var differenceX = currentCoords.pageX - startCoords.pageX,
differenceY = currentCoords.pageY - startCoords.pageY;
applyTouchMove(differenceX, differenceY);
startCoords = currentCoords;
var currentTime = (new Date()).getTime();
var timeGap = currentTime - startTime;
if (timeGap > 0) {
speed.x = differenceX / timeGap;
speed.y = differenceY / timeGap;
startTime = currentTime;
}
e.preventDefault();
}
});
$this.bind("touchend" + eventClassName, function (e) {
clearInterval(breakingProcess);
breakingProcess = setInterval(function () {
if (Math.abs(speed.x) < 0.01 && Math.abs(speed.y) < 0.01) {
clearInterval(breakingProcess);
return;
}
applyTouchMove(speed.x * 30, speed.y * 30);
speed.x *= 0.8;
speed.y *= 0.8;
},
10);
});
};
var bindScrollHandler = function () {
$this.bind("scroll" + eventClassName, function (e) {
updateBarSizeAndPosition();
});
};
var destroy = function () {
$this.unbind(eventClassName);
$(window).unbind(eventClassName);
$(document).unbind(eventClassName);
$this.data("perfect-scrollbar", null);
$this.data("perfect-scrollbar-update", null);
$this.data("perfect-scrollbar-destroy", null);
$scrollbarX.remove();
$scrollbarY.remove();
$scrollbarXRail.remove();
$scrollbarYRail.remove();
$scrollbarX = $scrollbarY = containerWidth = containerHeight = contentWidth = contentHeight = scrollbarXWidth = scrollbarXLeft = scrollbarXBottom = scrollbarYHeight = scrollbarYTop = scrollbarYRight = null;
};
var ieSupport = function (version) {
$this.addClass("ie").addClass("ie" + version);
var bindHoverHandlers = function () {
var mouseenter = function () {
$(this).addClass("hover");
};
var mouseleave = function () {
$(this).removeClass("hover");
};
$this.bind("mouseenter" + eventClassName, mouseenter).bind("mouseleave" + eventClassName, mouseleave);
$scrollbarXRail.bind("mouseenter" + eventClassName, mouseenter).bind("mouseleave" + eventClassName, mouseleave);
$scrollbarYRail.bind("mouseenter" + eventClassName, mouseenter).bind("mouseleave" + eventClassName, mouseleave);
$scrollbarX.bind("mouseenter" + eventClassName, mouseenter).bind("mouseleave" + eventClassName, mouseleave);
$scrollbarY.bind("mouseenter" + eventClassName, mouseenter).bind("mouseleave" + eventClassName, mouseleave);
};
var fixIe6ScrollbarPosition = function () {
updateScrollbarCss = function () {
$scrollbarX.css({
left: scrollbarXLeft + $this.scrollLeft(),
bottom: scrollbarXBottom,
width: scrollbarXWidth
});
$scrollbarY.css({
top: scrollbarYTop + $this.scrollTop(),
right: scrollbarYRight,
height: scrollbarYHeight
});
$scrollbarX.hide().show();
$scrollbarY.hide().show();
};
};
if (version === 6) {
bindHoverHandlers();
fixIe6ScrollbarPosition();
}
};
var supportsTouch = (("ontouchstart" in window) || window.DocumentTouch && document instanceof window.DocumentTouch);
var initialize = function () {
var ieMatch = navigator.userAgent.toLowerCase().match(/(msie) ([\w.]+)/);
if (ieMatch && ieMatch[1] === "msie") {
ieSupport(parseInt(ieMatch[2], 10));
}
updateBarSizeAndPosition();
bindScrollHandler();
bindMouseScrollXHandler();
bindMouseScrollYHandler();
bindRailClickHandler();
if (supportsTouch) {
bindMobileTouchHandler();
}
if ($this.mousewheel) {
bindMouseWheelHandler();
}
if (settings.useKeyboard) {
bindKeyboardHandler();
}
$this.data("perfect-scrollbar", $this);
$this.data("perfect-scrollbar-update", updateBarSizeAndPosition);
$this.data("perfect-scrollbar-destroy", destroy);
};
initialize();
return $this;
});
};
}));