cartodb4/perfect-scrollbar
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Code refactoring.

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This commit is contained in:
Hyunje Alex Jun 2013-05-18 12:41:15 +09:00
parent 667c61d2c3
commit 4613c3daee
1 changed files with 316 additions and 312 deletions
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298
src/perfect-scrollbar.js
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@ -1,7 +1,7 @@
/* Copyright (c) 2012 HyeonJe Jun (http://github.com/noraesae)
* Licensed under the MIT License
*/
((function($) {
((function ($) {
// The default settings for the plugin
var defaultSettings = {
@ -9,271 +9,271 @@
wheelPropagation: false
};
$.fn.perfectScrollbar = function(suppliedSettings, option) {
$.fn.perfectScrollbar = function (suppliedSettings, option) {
// Use the default settings
var settings = $.extend( true, {}, defaultSettings );
var settings = $.extend(true, {}, defaultSettings);
if (typeof suppliedSettings === "object") {
// But over-ride any supplied
$.extend( true, settings, suppliedSettings );
$.extend(true, settings, suppliedSettings);
} else {
// If no settings were supplied, then the first param must be the option
option = suppliedSettings;
}
if(option === 'update') {
if($(this).data('perfect_scrollbar_update')) {
$(this).data('perfect_scrollbar_update')();
if (option === 'update') {
if ($(this).data('perfect-scrollbar-update')) {
$(this).data('perfect-scrollbar-update')();
}
return $(this);
}
else if(option === 'destroy') {
if($(this).data('perfect_scrollbar_destroy')) {
$(this).data('perfect_scrollbar_destroy')();
else if (option === 'destroy') {
if ($(this).data('perfect-scrollbar-destroy')) {
$(this).data('perfect-scrollbar-destroy')();
}
return $(this);
}
if($(this).data('perfect_scrollbar')) {
// if there's already perfect_scrollbar
return $(this).data('perfect_scrollbar');
if ($(this).data('perfect-scrollbar')) {
// if there's already perfect-scrollbar
return $(this).data('perfect-scrollbar');
}
var $this = $(this).addClass('ps-container'),
$content = $(this).children(),
$scrollbar_x = $("<div class='ps-scrollbar-x'></div>").appendTo($this),
$scrollbar_y = $("<div class='ps-scrollbar-y'></div>").appendTo($this),
container_width,
container_height,
content_width,
content_height,
scrollbar_x_width,
scrollbar_x_left,
scrollbar_x_bottom = parseInt($scrollbar_x.css('bottom'), 10),
scrollbar_y_height,
scrollbar_y_top,
scrollbar_y_right = parseInt($scrollbar_y.css('right'), 10);
$scrollbarX = $("<div class='ps-scrollbar-x'></div>").appendTo($this),
$scrollbarY = $("<div class='ps-scrollbar-y'></div>").appendTo($this),
containerWidth,
containerHeight,
contentWidth,
contentHeight,
scrollbarXWidth,
scrollbarXLeft,
scrollbarXBottom = parseInt($scrollbarX.css('bottom'), 10),
scrollbarYHeight,
scrollbarYTop,
scrollbarYRight = parseInt($scrollbarY.css('right'), 10);
var updateContentScrollTop = function() {
var scroll_top = parseInt(scrollbar_y_top * content_height / container_height, 10);
$this.scrollTop(scroll_top);
$scrollbar_x.css({bottom: scrollbar_x_bottom - scroll_top});
var updateContentScrollTop = function () {
var scrollTop = parseInt(scrollbarYTop * contentHeight / containerHeight, 10);
$this.scrollTop(scrollTop);
$scrollbarX.css({bottom: scrollbarXBottom - scrollTop});
};
var updateContentScrollLeft = function() {
var scroll_left = parseInt(scrollbar_x_left * content_width / container_width, 10);
$this.scrollLeft(scroll_left);
$scrollbar_y.css({right: scrollbar_y_right - scroll_left});
var updateContentScrollLeft = function () {
var scrollLeft = parseInt(scrollbarXLeft * contentWidth / containerWidth, 10);
$this.scrollLeft(scrollLeft);
$scrollbarY.css({right: scrollbarYRight - scrollLeft});
};
var updateBarSizeAndPosition = function() {
container_width = $this.width();
container_height = $this.height();
content_width = $content.outerWidth(false);
content_height = $content.outerHeight(false);
if(container_width < content_width) {
scrollbar_x_width = parseInt(container_width * container_width / content_width, 10);
scrollbar_x_left = parseInt($this.scrollLeft() * container_width / content_width, 10);
var updateBarSizeAndPosition = function () {
containerWidth = $this.width();
containerHeight = $this.height();
contentWidth = $content.outerWidth(false);
contentHeight = $content.outerHeight(false);
if (containerWidth < contentWidth) {
scrollbarXWidth = parseInt(containerWidth * containerWidth / contentWidth, 10);
scrollbarXLeft = parseInt($this.scrollLeft() * containerWidth / contentWidth, 10);
}
else {
scrollbar_x_width = 0;
scrollbar_x_left = 0;
scrollbarXWidth = 0;
scrollbarXLeft = 0;
$this.scrollLeft(0);
}
if(container_height < content_height) {
scrollbar_y_height = parseInt(container_height * container_height / content_height, 10);
scrollbar_y_top = parseInt($this.scrollTop() * container_height / content_height, 10);
if (containerHeight < contentHeight) {
scrollbarYHeight = parseInt(containerHeight * containerHeight / contentHeight, 10);
scrollbarYTop = parseInt($this.scrollTop() * containerHeight / contentHeight, 10);
}
else {
scrollbar_y_height = 0;
scrollbar_y_left = 0;
scrollbarYHeight = 0;
scrollbarYTop = 0;
$this.scrollTop(0);
}
if(scrollbar_y_top >= container_height - scrollbar_y_height) {
scrollbar_y_top = container_height - scrollbar_y_height;
if (scrollbarYTop >= containerHeight - scrollbarYHeight) {
scrollbarYTop = containerHeight - scrollbarYHeight;
}
if(scrollbar_x_left >= container_width - scrollbar_x_width) {
scrollbar_x_left = container_width - scrollbar_x_width;
if (scrollbarXLeft >= containerWidth - scrollbarXWidth) {
scrollbarXLeft = containerWidth - scrollbarXWidth;
}
$scrollbar_x.css({left: scrollbar_x_left + $this.scrollLeft(), bottom: scrollbar_x_bottom - $this.scrollTop(), width: scrollbar_x_width});
$scrollbar_y.css({top: scrollbar_y_top + $this.scrollTop(), right: scrollbar_y_right - $this.scrollLeft(), height: scrollbar_y_height});
$scrollbarX.css({left: scrollbarXLeft + $this.scrollLeft(), bottom: scrollbarXBottom - $this.scrollTop(), width: scrollbarXWidth});
$scrollbarY.css({top: scrollbarYTop + $this.scrollTop(), right: scrollbarYRight - $this.scrollLeft(), height: scrollbarYHeight});
};
var moveBarX = function(current_left, delta_x) {
var new_left = current_left + delta_x,
max_left = container_width - scrollbar_x_width;
var moveBarX = function (currentLeft, deltaX) {
var newLeft = currentLeft + deltaX,
maxLeft = containerWidth - scrollbarXWidth;
if(new_left < 0) {
scrollbar_x_left = 0;
if (newLeft < 0) {
scrollbarXLeft = 0;
}
else if(new_left > max_left) {
scrollbar_x_left = max_left;
else if (newLeft > maxLeft) {
scrollbarXLeft = maxLeft;
}
else {
scrollbar_x_left = new_left;
scrollbarXLeft = newLeft;
}
$scrollbar_x.css({left: scrollbar_x_left + $this.scrollLeft()});
$scrollbarX.css({left: scrollbarXLeft + $this.scrollLeft()});
};
var moveBarY = function(current_top, delta_y) {
var new_top = current_top + delta_y,
max_top = container_height - scrollbar_y_height;
var moveBarY = function (currentTop, deltaY) {
var newTop = currentTop + deltaY,
maxTop = containerHeight - scrollbarYHeight;
if(new_top < 0) {
scrollbar_y_top = 0;
if (newTop < 0) {
scrollbarYTop = 0;
}
else if(new_top > max_top) {
scrollbar_y_top = max_top;
else if (newTop > maxTop) {
scrollbarYTop = maxTop;
}
else {
scrollbar_y_top = new_top;
scrollbarYTop = newTop;
}
$scrollbar_y.css({top: scrollbar_y_top + $this.scrollTop()});
$scrollbarY.css({top: scrollbarYTop + $this.scrollTop()});
};
var bindMouseScrollXHandler = function() {
var current_left,
current_page_x;
var bindMouseScrollXHandler = function () {
var currentLeft,
currentPageX;
$scrollbar_x.bind('mousedown.perfect-scroll', function(e) {
current_page_x = e.pageX;
current_left = $scrollbar_x.position().left;
$scrollbar_x.addClass('in-scrolling');
$scrollbarX.bind('mousedown.perfect-scroll', function (e) {
currentPageX = e.pageX;
currentLeft = $scrollbarX.position().left;
$scrollbarX.addClass('in-scrolling');
e.stopPropagation();
e.preventDefault();
});
$(document).bind('mousemove.perfect-scroll', function(e) {
if($scrollbar_x.hasClass('in-scrolling')) {
moveBarX(current_left, e.pageX - current_page_x);
$(document).bind('mousemove.perfect-scroll', function (e) {
if ($scrollbarX.hasClass('in-scrolling')) {
moveBarX(currentLeft, e.pageX - currentPageX);
updateContentScrollLeft();
e.stopPropagation();
e.preventDefault();
}
});
$(document).bind('mouseup.perfect-scroll', function(e) {
if($scrollbar_x.hasClass('in-scrolling')) {
$scrollbar_x.removeClass('in-scrolling');
$(document).bind('mouseup.perfect-scroll', function (e) {
if ($scrollbarX.hasClass('in-scrolling')) {
$scrollbarX.removeClass('in-scrolling');
}
});
};
var bindMouseScrollYHandler = function() {
var current_top,
current_page_y;
var bindMouseScrollYHandler = function () {
var currentTop,
currentPageY;
$scrollbar_y.bind('mousedown.perfect-scroll', function(e) {
current_page_y = e.pageY;
current_top = $scrollbar_y.position().top;
$scrollbar_y.addClass('in-scrolling');
$scrollbarY.bind('mousedown.perfect-scroll', function (e) {
currentPageY = e.pageY;
currentTop = $scrollbarY.position().top;
$scrollbarY.addClass('in-scrolling');
e.stopPropagation();
e.preventDefault();
});
$(document).bind('mousemove.perfect-scroll', function(e) {
if($scrollbar_y.hasClass('in-scrolling')) {
moveBarY(current_top, e.pageY - current_page_y);
$(document).bind('mousemove.perfect-scroll', function (e) {
if ($scrollbarY.hasClass('in-scrolling')) {
moveBarY(currentTop, e.pageY - currentPageY);
updateContentScrollTop();
e.stopPropagation();
e.preventDefault();
}
});
$(document).bind('mouseup.perfect-scroll', function(e) {
if($scrollbar_y.hasClass('in-scrolling')) {
$scrollbar_y.removeClass('in-scrolling');
$(document).bind('mouseup.perfect-scroll', function (e) {
if ($scrollbarY.hasClass('in-scrolling')) {
$scrollbarY.removeClass('in-scrolling');
}
});
};
// bind handlers
var bindMouseWheelHandler = function() {
var shouldPreventDefault = function(deltaX, deltaY) {
var bindMouseWheelHandler = function () {
var shouldPreventDefault = function (deltaX, deltaY) {
var scrollTop = $this.scrollTop();
if(scrollTop === 0 && deltaY > 0 && deltaX === 0) {
if (scrollTop === 0 && deltaY > 0 && deltaX === 0) {
return !settings.wheelPropagation;
}
else if(scrollTop >= content_height - container_height && deltaY < 0 && deltaX === 0) {
else if (scrollTop >= contentHeight - containerHeight && deltaY < 0 && deltaX === 0) {
return !settings.wheelPropagation;
}
var scrollLeft = $this.scrollLeft();
if(scrollLeft === 0 && deltaX < 0 && deltaY === 0) {
if (scrollLeft === 0 && deltaX < 0 && deltaY === 0) {
return !settings.wheelPropagation;
}
else if(scrollLeft >= content_width - container_width && deltaX > 0 && deltaY === 0) {
else if (scrollLeft >= contentWidth - containerWidth && deltaX > 0 && deltaY === 0) {
return !settings.wheelPropagation;
}
return true;
};
$this.mousewheel(function(e, delta, deltaX, deltaY) {
$this.mousewheel(function (e, delta, deltaX, deltaY) {
$this.scrollTop($this.scrollTop() - (deltaY * settings.wheelSpeed));
$this.scrollLeft($this.scrollLeft() + (deltaX * settings.wheelSpeed));
// update bar position
updateBarSizeAndPosition();
if(shouldPreventDefault(deltaX, deltaY)) {
if (shouldPreventDefault(deltaX, deltaY)) {
e.preventDefault();
}
});
};
// bind mobile touch handler
var bindMobileTouchHandler = function() {
var applyTouchMove = function(difference_x, difference_y) {
$this.scrollTop($this.scrollTop() - difference_y);
$this.scrollLeft($this.scrollLeft() - difference_x);
var bindMobileTouchHandler = function () {
var applyTouchMove = function (differenceX, differenceY) {
$this.scrollTop($this.scrollTop() - differenceY);
$this.scrollLeft($this.scrollLeft() - differenceX);
// update bar position
updateBarSizeAndPosition();
};
var start_coords = {},
start_time = 0,
var startCoords = {},
startTime = 0,
speed = {},
breaking_process = null;
breakingProcess = null;
$this.bind("touchstart.perfect-scroll", function(e) {
$this.bind("touchstart.perfect-scroll", function (e) {
var touch = e.originalEvent.targetTouches[0];
start_coords.pageX = touch.pageX;
start_coords.pageY = touch.pageY;
startCoords.pageX = touch.pageX;
startCoords.pageY = touch.pageY;
start_time = (new Date()).getTime();
startTime = (new Date()).getTime();
if (breaking_process !== null) {
clearInterval(breaking_process);
if (breakingProcess !== null) {
clearInterval(breakingProcess);
}
});
$this.bind("touchmove.perfect-scroll", function(e) {
$this.bind("touchmove.perfect-scroll", function (e) {
var touch = e.originalEvent.targetTouches[0];
var current_coords = {};
current_coords.pageX = touch.pageX;
current_coords.pageY = touch.pageY;
var currentCoords = {};
currentCoords.pageX = touch.pageX;
currentCoords.pageY = touch.pageY;
var difference_x = current_coords.pageX - start_coords.pageX,
difference_y = current_coords.pageY - start_coords.pageY;
var differenceX = currentCoords.pageX - startCoords.pageX,
differenceY = currentCoords.pageY - startCoords.pageY;
applyTouchMove(difference_x, difference_y);
start_coords = current_coords;
applyTouchMove(differenceX, differenceY);
startCoords = currentCoords;
var current_time = (new Date()).getTime();
speed.x = difference_x / (current_time - start_time);
speed.y = difference_y / (current_time - start_time);
start_time = current_time;
var currentTime = (new Date()).getTime();
speed.x = differenceX / (currentTime - startTime);
speed.y = differenceY / (currentTime - startTime);
startTime = currentTime;
e.preventDefault();
});
$this.bind("touchend.perfect-scroll", function(e) {
breaking_process = setInterval(function() {
if(Math.abs(speed.x) < 0.01 && Math.abs(speed.y) < 0.01) {
clearInterval(breaking_process);
$this.bind("touchend.perfect-scroll", function (e) {
breakingProcess = setInterval(function () {
if (Math.abs(speed.x) < 0.01 && Math.abs(speed.y) < 0.01) {
clearInterval(breakingProcess);
return;
}
@ -285,31 +285,35 @@
});
};
var destroy = function() {
$scrollbar_x.remove();
$scrollbar_y.remove();
var destroy = function () {
$scrollbarX.remove();
$scrollbarY.remove();
$this.unbind('mousewheel');
$this.unbind('touchstart.perfect-scroll');
$this.unbind('touchmove.perfect-scroll');
$this.unbind('touchend.perfect-scroll');
$(window).unbind('mousemove.perfect-scroll');
$(window).unbind('mouseup.perfect-scroll');
$this.data('perfect_scrollbar', null);
$this.data('perfect_scrollbar_update', null);
$this.data('perfect_scrollbar_destroy', null);
$this.data('perfect-scrollbar', null);
$this.data('perfect-scrollbar-update', null);
$this.data('perfect-scrollbar-destroy', null);
};
var isMobile = /Android|webOS|iPhone|iPad|iPod|BlackBerry/i.test(navigator.userAgent);
var initialize = function() {
var initialize = function () {
updateBarSizeAndPosition();
bindMouseScrollXHandler();
bindMouseScrollYHandler();
if(isMobile) bindMobileTouchHandler();
if($this.mousewheel) bindMouseWheelHandler();
$this.data('perfect_scrollbar', $this);
$this.data('perfect_scrollbar_update', updateBarSizeAndPosition);
$this.data('perfect_scrollbar_destroy', destroy);
if (isMobile) {
bindMobileTouchHandler();
}
if ($this.mousewheel) {
bindMouseWheelHandler();
}
$this.data('perfect-scrollbar', $this);
$this.data('perfect-scrollbar-update', updateBarSizeAndPosition);
$this.data('perfect-scrollbar-destroy', destroy);
};
// initialize