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jquery.jscrollpane.js
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/*!
* jScrollPane - v2.2.3-rc.1 - 2020-06-26
* http://jscrollpane.kelvinluck.com/
*
* Copyright (c) 2014 Kelvin Luck
* Copyright (c) 2017-2020 Tuukka Pasanen
* Dual licensed under the MIT or GPL licenses.
*
* SPDX-License-Identifier: MIT
* SPDX-License-Identifier: GPL-2.0-or-later
*/
// Script: jScrollPane - cross browser customisable scrollbars
//
// Project Home - http://jscrollpane.kelvinluck.com/
// GitHub - http://github.com/vitch/jScrollPane
// CND - https://cdnjs.com/libraries/jScrollPane
// Source - https://cdnjs.cloudflare.com/ajax/libs/jScrollPane/2.2.1/script/jquery.jscrollpane.min.js
// (Minified) - https://cdnjs.cloudflare.com/ajax/libs/jScrollPane/2.2.1/script/jquery.jscrollpane.js
// CSS - https://cdnjs.cloudflare.com/ajax/libs/jScrollPane/2.2.1/style/jquery.jscrollpane.css
// (Minified) - https://cdnjs.cloudflare.com/ajax/libs/jScrollPane/2.2.1/style/jquery.jscrollpane.min.css
//
// About: License
//
// Copyright (c) 2017 Kelvin Luck
// Copyright (c) 2017-2020 Tuukka Pasanen
// Dual licensed under the MIT or GPL Version 2 licenses.
// https://github.com/vitch/jScrollPane/blob/master/MIT-LICENSE.txt
// https://github.com/vitch/jScrollPane/blob/master/GPL-LICENSE.txt
//
// About: Examples
//
// All examples and demos are available through the jScrollPane example site at:
// http://jscrollpane.kelvinluck.com/
//
// About: Support and Testing
//
// This plugin is tested on the browsers below and has been found to work reliably on them. If you run
// into a problem on one of the supported browsers then please visit the support section on the jScrollPane
// website (http://jscrollpane.kelvinluck.com/) for more information on getting support. You are also
// welcome to fork the project on GitHub if you can contribute a fix for a given issue.
//
// jQuery Versions - jQuery 3.x. Although script should work from jQuery 1.1 and up but no promises are made.
// Browsers Tested - See jQuery browser support page: https://jquery.com/browser-support/. Only modern
// browsers are supported.
//
// About: Release History
//
// 2.2.3-rc.1 - (2020-06-26) Fix Github Issue #376 and #377 with jQuery 3.5 and upcoming jQuery 4.0
// Small change with setting stickToBottom. Updated other scripts to
// jQuery 3.x.
// 2.2.2 - (2020-05-06) Just update NPM dependecies to remove vunerbilities
// 2.2.1 - (2018-09-27) No changed applied to release so same as RC1/2
// 2.2.1-rc.2 - (2018-06-14) Sucked NPM release have to make new Release.. this is 2018!
// 2.2.1-rc.1 - (2018-06-14) Fixed CSSLint warnings which can lead CSS problems in
// production! Please report a issue if this breaks something!
// * Merged:
// - #360 Register to globally available version of jQuery
// 2.2.0 - (2018-05-16) No changes to RC1
// 2.2.0-rc.1 - (2018-04-28) Merged resize sensor to find out size changes of screen and
// again little bit tuned this to support more npm goodies.
// * Merged:
// - #361 Event based reinitialising - Resize Sensor
// - #359 Use npm scripts and local dev dependencies to build the project
(function (factory) {
if (typeof define === 'function' && define.amd) {
// AMD. Register as an anonymous module.
define(['jquery'], factory);
} else if (typeof exports === 'object') {
// Node/CommonJS style for Browserify
module.exports = factory(jQuery || require('jquery'));
} else {
// Browser globals
factory(jQuery);
}
})(function ($) {
$.fn.jScrollPane = function (settings) {
// JScrollPane "class" - public methods are available through $('selector').data('jsp')
function JScrollPane(elem, s) {
var settings,
jsp = this,
pane,
paneWidth,
paneHeight,
container,
contentWidth,
contentHeight,
percentInViewH,
percentInViewV,
isScrollableV,
isScrollableH,
verticalDrag,
dragMaxY,
verticalDragPosition,
horizontalDrag,
dragMaxX,
horizontalDragPosition,
verticalBar,
verticalTrack,
scrollbarWidth,
verticalTrackHeight,
verticalDragHeight,
arrowUp,
arrowDown,
horizontalBar,
horizontalTrack,
horizontalTrackWidth,
horizontalDragWidth,
arrowLeft,
arrowRight,
reinitialiseInterval,
originalPadding,
originalPaddingTotalWidth,
previousContentWidth,
wasAtTop = true,
wasAtLeft = true,
wasAtBottom = false,
wasAtRight = false,
originalElement = elem.clone(false, false).empty(),
resizeEventsAdded = false,
mwEvent = $.fn.mwheelIntent ? 'mwheelIntent.jsp' : 'mousewheel.jsp';
var reinitialiseFn = function () {
// if size has changed then reinitialise
if (settings.resizeSensorDelay > 0) {
setTimeout(function () {
initialise(settings);
}, settings.resizeSensorDelay);
} else {
initialise(settings);
}
};
if (elem.css('box-sizing') === 'border-box') {
originalPadding = 0;
originalPaddingTotalWidth = 0;
} else {
originalPadding =
elem.css('paddingTop') +
' ' +
elem.css('paddingRight') +
' ' +
elem.css('paddingBottom') +
' ' +
elem.css('paddingLeft');
originalPaddingTotalWidth = (parseInt(elem.css('paddingLeft'), 10) || 0) + (parseInt(elem.css('paddingRight'), 10) || 0);
}
function initialise(s) {
var /*firstChild, lastChild, */ isMaintainingPositon,
lastContentX,
lastContentY,
hasContainingSpaceChanged,
originalScrollTop,
originalScrollLeft,
newPaneWidth,
newPaneHeight,
maintainAtBottom = false,
maintainAtRight = false;
settings = s;
lastContentX = 0;
lastContentY = 0;
if (pane === undefined) {
originalScrollTop = elem.scrollTop();
originalScrollLeft = elem.scrollLeft();
elem.css({
overflow: 'hidden',
padding: '0',
});
// TODO: Deal with where width/ height is 0 as it probably means the element is hidden and we should
// come back to it later and check once it is unhidden...
paneWidth = elem.innerWidth() + originalPaddingTotalWidth;
paneHeight = elem.innerHeight();
elem.width(paneWidth);
pane = $('<div class="jspPane"></div>').css('padding', originalPadding).append(elem.children());
container = $('<div class="jspContainer"></div>')
.css({
width: paneWidth + 'px',
height: paneHeight + 'px',
})
.append(pane)
.appendTo(elem);
/*
// Move any margins from the first and last children up to the container so they can still
// collapse with neighbouring elements as they would before jScrollPane
firstChild = pane.find(':first-child');
lastChild = pane.find(':last-child');
elem.css(
{
'margin-top': firstChild.css('margin-top'),
'margin-bottom': lastChild.css('margin-bottom')
}
);
firstChild.css('margin-top', 0);
lastChild.css('margin-bottom', 0);
*/
} else {
elem.css('width', '');
// To measure the required dimensions accurately, temporarily override the CSS positioning
// of the container and pane.
container.css({ width: 'auto', height: 'auto' });
pane.css('position', 'static');
newPaneWidth = elem.innerWidth() + originalPaddingTotalWidth;
newPaneHeight = elem.innerHeight();
pane.css('position', 'absolute');
maintainAtBottom = settings.stickToBottom && isCloseToBottom();
maintainAtRight = settings.stickToRight && isCloseToRight();
hasContainingSpaceChanged = newPaneWidth !== paneWidth || newPaneHeight !== paneHeight;
paneWidth = newPaneWidth;
paneHeight = newPaneHeight;
container.css({ width: paneWidth + 'px', height: paneHeight + 'px' });
// If nothing changed since last check...
if (!hasContainingSpaceChanged && previousContentWidth == contentWidth && pane.outerHeight() == contentHeight) {
elem.width(paneWidth);
return;
}
previousContentWidth = contentWidth;
pane.css('width', '');
elem.width(paneWidth);
container.find('>.jspVerticalBar,>.jspHorizontalBar').remove().end();
}
pane.css('overflow', 'auto');
if (s.contentWidth) {
contentWidth = s.contentWidth;
} else {
contentWidth = pane[0].scrollWidth;
}
contentHeight = pane[0].scrollHeight;
pane.css('overflow', '');
percentInViewH = contentWidth / paneWidth;
percentInViewV = contentHeight / paneHeight;
isScrollableV = percentInViewV > 1 || settings.alwaysShowVScroll;
isScrollableH = percentInViewH > 1 || settings.alwaysShowHScroll;
if (!(isScrollableH || isScrollableV)) {
elem.removeClass('jspScrollable');
pane.css({
top: '0',
left: '0',
width: container.width() - originalPaddingTotalWidth,
});
removeMousewheel();
removeFocusHandler();
removeKeyboardNav();
removeClickOnTrack();
} else {
elem.addClass('jspScrollable');
isMaintainingPositon = settings.maintainPosition && (verticalDragPosition || horizontalDragPosition);
if (isMaintainingPositon) {
lastContentX = contentPositionX();
lastContentY = contentPositionY();
}
initialiseVerticalScroll();
initialiseHorizontalScroll();
resizeScrollbars();
if (settings.stickToBottom || settings.stickToRight) {
scrollToX(maintainAtRight ? contentWidth - paneWidth : lastContentX, false);
scrollToY(maintainAtBottom ? contentHeight - paneHeight : lastContentY, false);
}
initFocusHandler();
initMousewheel();
initTouch();
if (settings.enableKeyboardNavigation) {
initKeyboardNav();
}
if (settings.clickOnTrack) {
initClickOnTrack();
}
observeHash();
if (settings.hijackInternalLinks) {
hijackInternalLinks();
}
}
if (!settings.resizeSensor && settings.autoReinitialise && !reinitialiseInterval) {
reinitialiseInterval = setInterval(function () {
initialise(settings);
}, settings.autoReinitialiseDelay);
} else if (!settings.resizeSensor && !settings.autoReinitialise && reinitialiseInterval) {
clearInterval(reinitialiseInterval);
}
if (settings.resizeSensor && !resizeEventsAdded) {
// detect size change in content
detectSizeChanges(pane, reinitialiseFn);
// detect size changes of scroll element
detectSizeChanges(elem, reinitialiseFn);
// detect size changes of container
detectSizeChanges(elem.parent(), reinitialiseFn);
// add a reinit on window resize also for safety
window.addEventListener('resize', reinitialiseFn);
resizeEventsAdded = true;
}
if (originalScrollTop && elem.scrollTop(0)) {
scrollToY(originalScrollTop, false);
}
if (originalScrollLeft && elem.scrollLeft(0)) {
scrollToX(originalScrollLeft, false);
}
elem.trigger('jsp-initialised', [isScrollableH || isScrollableV]);
}
function detectSizeChanges(element, callback) {
// create resize event elements - based on resize sensor: https://github.com/flowkey/resize-sensor/
var resizeWidth, resizeHeight;
var resizeElement = document.createElement('div');
var resizeGrowElement = document.createElement('div');
var resizeGrowChildElement = document.createElement('div');
var resizeShrinkElement = document.createElement('div');
var resizeShrinkChildElement = document.createElement('div');
// add necessary styling
resizeElement.style.cssText =
'position: absolute; left: 0; top: 0; right: 0; bottom: 0; overflow: scroll; z-index: -1; visibility: hidden;';
resizeGrowElement.style.cssText =
'position: absolute; left: 0; top: 0; right: 0; bottom: 0; overflow: scroll; z-index: -1; visibility: hidden;';
resizeShrinkElement.style.cssText =
'position: absolute; left: 0; top: 0; right: 0; bottom: 0; overflow: scroll; z-index: -1; visibility: hidden;';
resizeGrowChildElement.style.cssText = 'position: absolute; left: 0; top: 0;';
resizeShrinkChildElement.style.cssText = 'position: absolute; left: 0; top: 0; width: 200%; height: 200%;';
// Create a function to programmatically update sizes
var updateSizes = function () {
resizeGrowChildElement.style.width = resizeGrowElement.offsetWidth + 10 + 'px';
resizeGrowChildElement.style.height = resizeGrowElement.offsetHeight + 10 + 'px';
resizeGrowElement.scrollLeft = resizeGrowElement.scrollWidth;
resizeGrowElement.scrollTop = resizeGrowElement.scrollHeight;
resizeShrinkElement.scrollLeft = resizeShrinkElement.scrollWidth;
resizeShrinkElement.scrollTop = resizeShrinkElement.scrollHeight;
resizeWidth = element.width();
resizeHeight = element.height();
};
// create functions to call when content grows
var onGrow = function () {
// check to see if the content has change size
if (element.width() > resizeWidth || element.height() > resizeHeight) {
// if size has changed then reinitialise
callback.apply(this, []);
}
// after reinitialising update sizes
updateSizes();
};
// create functions to call when content shrinks
var onShrink = function () {
// check to see if the content has change size
if (element.width() < resizeWidth || element.height() < resizeHeight) {
// if size has changed then reinitialise
callback.apply(this, []);
}
// after reinitialising update sizes
updateSizes();
};
// bind to scroll events
resizeGrowElement.addEventListener('scroll', onGrow.bind(this));
resizeShrinkElement.addEventListener('scroll', onShrink.bind(this));
// nest elements before adding to pane
resizeGrowElement.appendChild(resizeGrowChildElement);
resizeShrinkElement.appendChild(resizeShrinkChildElement);
resizeElement.appendChild(resizeGrowElement);
resizeElement.appendChild(resizeShrinkElement);
element.append(resizeElement);
// ensure parent element is not statically positioned
if (window.getComputedStyle(element[0], null).getPropertyValue('position') === 'static') {
element[0].style.position = 'relative';
}
// update sizes initially
updateSizes();
}
function initialiseVerticalScroll() {
if (isScrollableV) {
container.append(
$('<div class="jspVerticalBar"></div>').append(
$('<div class="jspCap jspCapTop"></div>'),
$('<div class="jspTrack"></div>').append(
$('<div class="jspDrag"></div>').append(
$('<div class="jspDragTop"></div>'),
$('<div class="jspDragBottom"></div>'),
),
),
$('<div class="jspCap jspCapBottom"></div>'),
),
);
verticalBar = container.find('>.jspVerticalBar');
verticalTrack = verticalBar.find('>.jspTrack');
verticalDrag = verticalTrack.find('>.jspDrag');
if (settings.showArrows) {
arrowUp = $('<a class="jspArrow jspArrowUp"></a>').on('mousedown.jsp', getArrowScroll(0, -1)).on('click.jsp', nil);
arrowDown = $('<a class="jspArrow jspArrowDown"></a>')
.on('mousedown.jsp', getArrowScroll(0, 1))
.on('click.jsp', nil);
if (settings.arrowScrollOnHover) {
arrowUp.on('mouseover.jsp', getArrowScroll(0, -1, arrowUp));
arrowDown.on('mouseover.jsp', getArrowScroll(0, 1, arrowDown));
}
appendArrows(verticalTrack, settings.verticalArrowPositions, arrowUp, arrowDown);
}
verticalTrackHeight = paneHeight;
container.find('>.jspVerticalBar>.jspCap:visible,>.jspVerticalBar>.jspArrow').each(function () {
verticalTrackHeight -= $(this).outerHeight();
});
verticalDrag
.on('mouseenter', function () {
verticalDrag.addClass('jspHover');
})
.on('mouseleave', function () {
verticalDrag.removeClass('jspHover');
})
.on('mousedown.jsp', function (e) {
// Stop IE from allowing text selection
$('html').on('dragstart.jsp selectstart.jsp', nil);
verticalDrag.addClass('jspActive');
var startY = e.pageY - verticalDrag.position().top;
$('html')
.on('mousemove.jsp', function (e) {
positionDragY(e.pageY - startY, false);
})
.on('mouseup.jsp mouseleave.jsp', cancelDrag);
return false;
});
sizeVerticalScrollbar();
}
}
function sizeVerticalScrollbar() {
verticalTrack.height(verticalTrackHeight + 'px');
verticalDragPosition = 0;
scrollbarWidth = settings.verticalGutter + verticalTrack.outerWidth();
// Make the pane thinner to allow for the vertical scrollbar
pane.width(paneWidth - scrollbarWidth - originalPaddingTotalWidth);
// Add margin to the left of the pane if scrollbars are on that side (to position
// the scrollbar on the left or right set it's left or right property in CSS)
try {
if (verticalBar.position().left === 0) {
pane.css('margin-left', scrollbarWidth + 'px');
}
} catch (err) {}
}
function initialiseHorizontalScroll() {
if (isScrollableH) {
container.append(
$('<div class="jspHorizontalBar"></div>').append(
$('<div class="jspCap jspCapLeft"></div>'),
$('<div class="jspTrack"></div>').append(
$('<div class="jspDrag"></div>').append(
$('<div class="jspDragLeft"></div>'),
$('<div class="jspDragRight"></div>'),
),
),
$('<div class="jspCap jspCapRight"></div>'),
),
);
horizontalBar = container.find('>.jspHorizontalBar');
horizontalTrack = horizontalBar.find('>.jspTrack');
horizontalDrag = horizontalTrack.find('>.jspDrag');
if (settings.showArrows) {
arrowLeft = $('<a class="jspArrow jspArrowLeft"></a>')
.on('mousedown.jsp', getArrowScroll(-1, 0))
.on('click.jsp', nil);
arrowRight = $('<a class="jspArrow jspArrowRight"></a>')
.on('mousedown.jsp', getArrowScroll(1, 0))
.on('click.jsp', nil);
if (settings.arrowScrollOnHover) {
arrowLeft.on('mouseover.jsp', getArrowScroll(-1, 0, arrowLeft));
arrowRight.on('mouseover.jsp', getArrowScroll(1, 0, arrowRight));
}
appendArrows(horizontalTrack, settings.horizontalArrowPositions, arrowLeft, arrowRight);
}
horizontalDrag
.on('mouseenter', function () {
horizontalDrag.addClass('jspHover');
})
.on('mouseleave', function () {
horizontalDrag.removeClass('jspHover');
})
.on('mousedown.jsp', function (e) {
// Stop IE from allowing text selection
$('html').on('dragstart.jsp selectstart.jsp', nil);
horizontalDrag.addClass('jspActive');
var startX = e.pageX - horizontalDrag.position().left;
$('html')
.on('mousemove.jsp', function (e) {
positionDragX(e.pageX - startX, false);
})
.on('mouseup.jsp mouseleave.jsp', cancelDrag);
return false;
});
horizontalTrackWidth = container.innerWidth();
sizeHorizontalScrollbar();
}
}
function sizeHorizontalScrollbar() {
container.find('>.jspHorizontalBar>.jspCap:visible,>.jspHorizontalBar>.jspArrow').each(function () {
horizontalTrackWidth -= $(this).outerWidth();
});
horizontalTrack.width(horizontalTrackWidth + 'px');
horizontalDragPosition = 0;
}
function resizeScrollbars() {
if (isScrollableH && isScrollableV) {
var horizontalTrackHeight = horizontalTrack.outerHeight(),
verticalTrackWidth = verticalTrack.outerWidth();
verticalTrackHeight -= horizontalTrackHeight;
$(horizontalBar)
.find('>.jspCap:visible,>.jspArrow')
.each(function () {
horizontalTrackWidth += $(this).outerWidth();
});
horizontalTrackWidth -= verticalTrackWidth;
paneHeight -= verticalTrackWidth;
paneWidth -= horizontalTrackHeight;
horizontalTrack.parent().append($('<div class="jspCorner"></div>').css('width', horizontalTrackHeight + 'px'));
sizeVerticalScrollbar();
sizeHorizontalScrollbar();
}
// reflow content
if (isScrollableH) {
pane.width(container.outerWidth() - originalPaddingTotalWidth + 'px');
}
contentHeight = pane.outerHeight();
percentInViewV = contentHeight / paneHeight;
if (isScrollableH) {
horizontalDragWidth = Math.ceil((1 / percentInViewH) * horizontalTrackWidth);
if (horizontalDragWidth > settings.horizontalDragMaxWidth) {
horizontalDragWidth = settings.horizontalDragMaxWidth;
} else if (horizontalDragWidth < settings.horizontalDragMinWidth) {
horizontalDragWidth = settings.horizontalDragMinWidth;
}
horizontalDrag.css('width', horizontalDragWidth + 'px');
dragMaxX = horizontalTrackWidth - horizontalDragWidth;
_positionDragX(horizontalDragPosition); // To update the state for the arrow buttons
}
if (isScrollableV) {
verticalDragHeight = Math.ceil((1 / percentInViewV) * verticalTrackHeight);
if (verticalDragHeight > settings.verticalDragMaxHeight) {
verticalDragHeight = settings.verticalDragMaxHeight;
} else if (verticalDragHeight < settings.verticalDragMinHeight) {
verticalDragHeight = settings.verticalDragMinHeight;
}
verticalDrag.css('height', verticalDragHeight + 'px');
dragMaxY = verticalTrackHeight - verticalDragHeight;
_positionDragY(verticalDragPosition); // To update the state for the arrow buttons
}
}
function appendArrows(ele, p, a1, a2) {
var p1 = 'before',
p2 = 'after',
aTemp;
// Sniff for mac... Is there a better way to determine whether the arrows would naturally appear
// at the top or the bottom of the bar?
if (p == 'os') {
p = /Mac/.test(navigator.platform) ? 'after' : 'split';
}
if (p == p1) {
p2 = p;
} else if (p == p2) {
p1 = p;
aTemp = a1;
a1 = a2;
a2 = aTemp;
}
ele[p1](a1)[p2](a2);
}
function getArrowScroll(dirX, dirY, ele) {
return function () {
arrowScroll(dirX, dirY, this, ele);
this.blur();
return false;
};
}
function arrowScroll(dirX, dirY, arrow, ele) {
arrow = $(arrow).addClass('jspActive');
var eve,
scrollTimeout,
isFirst = true,
doScroll = function () {
if (dirX !== 0) {
jsp.scrollByX(dirX * settings.arrowButtonSpeed);
}
if (dirY !== 0) {
jsp.scrollByY(dirY * settings.arrowButtonSpeed);
}
scrollTimeout = setTimeout(doScroll, isFirst ? settings.initialDelay : settings.arrowRepeatFreq);
isFirst = false;
};
doScroll();
eve = ele ? 'mouseout.jsp' : 'mouseup.jsp';
ele = ele || $('html');
ele.on(eve, function () {
arrow.removeClass('jspActive');
if (scrollTimeout) {
clearTimeout(scrollTimeout);
}
scrollTimeout = null;
ele.off(eve);
});
}
function initClickOnTrack() {
removeClickOnTrack();
if (isScrollableV) {
verticalTrack.on('mousedown.jsp', function (e) {
if (e.originalTarget === undefined || e.originalTarget == e.currentTarget) {
var clickedTrack = $(this),
offset = clickedTrack.offset(),
direction = e.pageY - offset.top - verticalDragPosition,
scrollTimeout,
isFirst = true,
doScroll = function () {
var offset = clickedTrack.offset(),
pos = e.pageY - offset.top - verticalDragHeight / 2,
contentDragY = paneHeight * settings.scrollPagePercent,
dragY = (dragMaxY * contentDragY) / (contentHeight - paneHeight);
if (direction < 0) {
if (verticalDragPosition - dragY > pos) {
jsp.scrollByY(-contentDragY);
} else {
positionDragY(pos);
}
} else if (direction > 0) {
if (verticalDragPosition + dragY < pos) {
jsp.scrollByY(contentDragY);
} else {
positionDragY(pos);
}
} else {
cancelClick();
return;
}
scrollTimeout = setTimeout(doScroll, isFirst ? settings.initialDelay : settings.trackClickRepeatFreq);
isFirst = false;
},
cancelClick = function () {
if (scrollTimeout) {
clearTimeout(scrollTimeout);
}
scrollTimeout = null;
$(document).off('mouseup.jsp', cancelClick);
};
doScroll();
$(document).on('mouseup.jsp', cancelClick);
return false;
}
});
}
if (isScrollableH) {
horizontalTrack.on('mousedown.jsp', function (e) {
if (e.originalTarget === undefined || e.originalTarget == e.currentTarget) {
var clickedTrack = $(this),
offset = clickedTrack.offset(),
direction = e.pageX - offset.left - horizontalDragPosition,
scrollTimeout,
isFirst = true,
doScroll = function () {
var offset = clickedTrack.offset(),
pos = e.pageX - offset.left - horizontalDragWidth / 2,
contentDragX = paneWidth * settings.scrollPagePercent,
dragX = (dragMaxX * contentDragX) / (contentWidth - paneWidth);
if (direction < 0) {
if (horizontalDragPosition - dragX > pos) {
jsp.scrollByX(-contentDragX);
} else {
positionDragX(pos);
}
} else if (direction > 0) {
if (horizontalDragPosition + dragX < pos) {
jsp.scrollByX(contentDragX);
} else {
positionDragX(pos);
}
} else {
cancelClick();
return;
}
scrollTimeout = setTimeout(doScroll, isFirst ? settings.initialDelay : settings.trackClickRepeatFreq);
isFirst = false;
},
cancelClick = function () {
if (scrollTimeout) {
clearTimeout(scrollTimeout);
}
scrollTimeout = null;
$(document).off('mouseup.jsp', cancelClick);
};
doScroll();
$(document).on('mouseup.jsp', cancelClick);
return false;
}
});
}
}
function removeClickOnTrack() {
if (horizontalTrack) {
horizontalTrack.off('mousedown.jsp');
}
if (verticalTrack) {
verticalTrack.off('mousedown.jsp');
}
}
function cancelDrag() {
$('html').off('dragstart.jsp selectstart.jsp mousemove.jsp mouseup.jsp mouseleave.jsp');
if (verticalDrag) {
verticalDrag.removeClass('jspActive');
}
if (horizontalDrag) {
horizontalDrag.removeClass('jspActive');
}
}
function positionDragY(destY, animate) {
if (!isScrollableV) {
return;
}
if (destY < 0) {
destY = 0;
} else if (destY > dragMaxY) {
destY = dragMaxY;
}
// allow for devs to prevent the JSP from being scrolled
var willScrollYEvent = new $.Event('jsp-will-scroll-y');
elem.trigger(willScrollYEvent, [destY]);
if (willScrollYEvent.isDefaultPrevented()) {
return;
}
var tmpVerticalDragPosition = destY || 0;
var isAtTop = tmpVerticalDragPosition === 0,
isAtBottom = tmpVerticalDragPosition == dragMaxY,
percentScrolled = destY / dragMaxY,
destTop = -percentScrolled * (contentHeight - paneHeight);
// can't just check if(animate) because false is a valid value that could be passed in...
if (animate === undefined) {
animate = settings.animateScroll;
}
if (animate) {
jsp.animate(verticalDrag, 'top', destY, _positionDragY, function () {
elem.trigger('jsp-user-scroll-y', [-destTop, isAtTop, isAtBottom]);
});
} else {
verticalDrag.css('top', destY + 'px');
_positionDragY(destY);
elem.trigger('jsp-user-scroll-y', [-destTop, isAtTop, isAtBottom]);
}
}
function _positionDragY(destY) {
if (destY === undefined) {
destY = verticalDrag.position().top;
}
container.scrollTop(0);
verticalDragPosition = destY || 0;
var isAtTop = verticalDragPosition === 0,
isAtBottom = verticalDragPosition == dragMaxY,
percentScrolled = destY / dragMaxY,
destTop = -percentScrolled * (contentHeight - paneHeight);
if (wasAtTop != isAtTop || wasAtBottom != isAtBottom) {
wasAtTop = isAtTop;
wasAtBottom = isAtBottom;
elem.trigger('jsp-arrow-change', [wasAtTop, wasAtBottom, wasAtLeft, wasAtRight]);
}
updateVerticalArrows(isAtTop, isAtBottom);
pane.css('top', destTop + 'px');
elem.trigger('jsp-scroll-y', [-destTop, isAtTop, isAtBottom]).trigger('scroll');
}
function positionDragX(destX, animate) {
if (!isScrollableH) {
return;
}
if (destX < 0) {
destX = 0;
} else if (destX > dragMaxX) {
destX = dragMaxX;
}
// allow for devs to prevent the JSP from being scrolled
var willScrollXEvent = new $.Event('jsp-will-scroll-x');
elem.trigger(willScrollXEvent, [destX]);
if (willScrollXEvent.isDefaultPrevented()) {
return;
}
var tmpHorizontalDragPosition = destX || 0;
var isAtLeft = tmpHorizontalDragPosition === 0,
isAtRight = tmpHorizontalDragPosition == dragMaxX,
percentScrolled = destX / dragMaxX,
destLeft = -percentScrolled * (contentWidth - paneWidth);
if (animate === undefined) {
animate = settings.animateScroll;
}
if (animate) {
jsp.animate(horizontalDrag, 'left', destX, _positionDragX, function () {
elem.trigger('jsp-user-scroll-x', [-destLeft, isAtLeft, isAtRight]);
});
} else {
horizontalDrag.css('left', destX + 'px');
_positionDragX(destX);
elem.trigger('jsp-user-scroll-x', [-destLeft, isAtLeft, isAtRight]);
}
}
function _positionDragX(destX) {
if (destX === undefined) {
destX = horizontalDrag.position().left;
}
container.scrollTop(0);
horizontalDragPosition = destX || 0;
var isAtLeft = horizontalDragPosition === 0,
isAtRight = horizontalDragPosition == dragMaxX,
percentScrolled = destX / dragMaxX,
destLeft = -percentScrolled * (contentWidth - paneWidth);
if (wasAtLeft != isAtLeft || wasAtRight != isAtRight) {
wasAtLeft = isAtLeft;
wasAtRight = isAtRight;
elem.trigger('jsp-arrow-change', [wasAtTop, wasAtBottom, wasAtLeft, wasAtRight]);
}
updateHorizontalArrows(isAtLeft, isAtRight);
pane.css('left', destLeft + 'px');
elem.trigger('jsp-scroll-x', [-destLeft, isAtLeft, isAtRight]).trigger('scroll');
}
function updateVerticalArrows(isAtTop, isAtBottom) {
if (settings.showArrows) {
arrowUp[isAtTop ? 'addClass' : 'removeClass']('jspDisabled');
arrowDown[isAtBottom ? 'addClass' : 'removeClass']('jspDisabled');
}
}
function updateHorizontalArrows(isAtLeft, isAtRight) {
if (settings.showArrows) {
arrowLeft[isAtLeft ? 'addClass' : 'removeClass']('jspDisabled');
arrowRight[isAtRight ? 'addClass' : 'removeClass']('jspDisabled');
}
}
function scrollToY(destY, animate) {
var percentScrolled = destY / (contentHeight - paneHeight);
positionDragY(percentScrolled * dragMaxY, animate);
}
function scrollToX(destX, animate) {
var percentScrolled = destX / (contentWidth - paneWidth);
positionDragX(percentScrolled * dragMaxX, animate);
}
function scrollToElement(ele, stickToTop, animate) {
var e,
eleHeight,
eleWidth,
eleTop = 0,
eleLeft = 0,
viewportTop,
viewportLeft,
maxVisibleEleTop,
maxVisibleEleLeft,
destY,
destX;
// Legal hash values aren't necessarily legal jQuery selectors so we need to catch any
// errors from the lookup...
try {
e = $(ele);
} catch (err) {
return;
}
eleHeight = e.outerHeight();
eleWidth = e.outerWidth();
container.scrollTop(0);
container.scrollLeft(0);
// loop through parents adding the offset top of any elements that are relatively positioned between
// the focused element and the jspPane so we can get the true distance from the top
// of the focused element to the top of the scrollpane...
while (!e.is('.jspPane')) {
eleTop += e.position().top;
eleLeft += e.position().left;
e = e.offsetParent();
if (/^body|html$/i.test(e[0].nodeName)) {
// we ended up too high in the document structure. Quit!
return;
}
}
viewportTop = contentPositionY();
maxVisibleEleTop = viewportTop + paneHeight;
if (eleTop < viewportTop || stickToTop) {
// element is above viewport
destY = eleTop - settings.horizontalGutter;
} else if (eleTop + eleHeight > maxVisibleEleTop) {
// element is below viewport
destY = eleTop - paneHeight + eleHeight + settings.horizontalGutter;
}
if (!isNaN(destY)) {
scrollToY(destY, animate);
}
viewportLeft = contentPositionX();
maxVisibleEleLeft = viewportLeft + paneWidth;
if (eleLeft < viewportLeft || stickToTop) {
// element is to the left of viewport
destX = eleLeft - settings.horizontalGutter;
} else if (eleLeft + eleWidth > maxVisibleEleLeft) {
// element is to the right viewport
destX = eleLeft - paneWidth + eleWidth + settings.horizontalGutter;
}
if (!isNaN(destX)) {
scrollToX(destX, animate);
}