mirror of https://github.com/gchq/CyberChef.git
585 lines
24 KiB
JavaScript
Executable File
585 lines
24 KiB
JavaScript
Executable File
/** @license
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========================================================================
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Split.js v1.1.1
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Copyright (c) 2015 Nathan Cahill
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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// The programming goals of Split.js are to deliver readable, understandable and
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// maintainable code, while at the same time manually optimizing for tiny minified file size,
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// browser compatibility without additional requirements, graceful fallback (IE8 is supported)
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// and very few assumptions about the user's page layout.
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//
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// Make sure all browsers handle this JS library correctly with ES5.
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// More information here: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Strict_mode
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'use strict';
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// A wrapper function that does a couple things:
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//
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// 1. Doesn't pollute the global namespace. This is important for a library.
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// 2. Allows us to mount the library in different module systems, as well as
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// directly in the browser.
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(function() {
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// Save the global `this` for use later. In this case, since the library only
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// runs in the browser, it will refer to `window`. Also, figure out if we're in IE8
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// or not. IE8 will still render correctly, but will be static instead of draggable.
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//
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// Save a couple long function names that are used frequently.
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// This optimization saves around 400 bytes.
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var global = this
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, isIE8 = global.attachEvent && !global[addEventListener]
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, document = global.document
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, addEventListener = 'addEventListener'
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, removeEventListener = 'removeEventListener'
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, getBoundingClientRect = 'getBoundingClientRect'
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// This library only needs two helper functions:
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//
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// The first determines which prefixes of CSS calc we need.
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// We only need to do this once on startup, when this anonymous function is called.
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//
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// Tests -webkit, -moz and -o prefixes. Modified from StackOverflow:
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// http://stackoverflow.com/questions/16625140/js-feature-detection-to-detect-the-usage-of-webkit-calc-over-calc/16625167#16625167
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, calc = (function () {
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var el
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, prefixes = ["", "-webkit-", "-moz-", "-o-"]
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for (var i = 0; i < prefixes.length; i++) {
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el = document.createElement('div')
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el.style.cssText = "width:" + prefixes[i] + "calc(9px)"
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if (el.style.length) {
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return prefixes[i] + "calc"
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}
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}
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})()
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// The second helper function allows elements and string selectors to be used
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// interchangeably. In either case an element is returned. This allows us to
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// do `Split(elem1, elem2)` as well as `Split('#id1', '#id2')`.
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, elementOrSelector = function (el) {
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if (typeof el === 'string' || el instanceof String) {
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return document.querySelector(el)
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} else {
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return el
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}
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}
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// The main function to initialize a split. Split.js thinks about each pair
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// of elements as an independant pair. Dragging the gutter between two elements
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// only changes the dimensions of elements in that pair. This is key to understanding
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// how the following functions operate, since each function is bound to a pair.
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//
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// A pair object is shaped like this:
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//
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// {
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// a: DOM element,
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// b: DOM element,
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// aMin: Number,
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// bMin: Number,
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// dragging: Boolean,
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// parent: DOM element,
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// isFirst: Boolean,
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// isLast: Boolean,
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// direction: 'horizontal' | 'vertical'
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// }
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//
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// The basic sequence:
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//
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// 1. Set defaults to something sane. `options` doesn't have to be passed at all.
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// 2. Initialize a bunch of strings based on the direction we're splitting.
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// A lot of the behavior in the rest of the library is paramatized down to
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// rely on CSS strings and classes.
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// 3. Define the dragging helper functions, and a few helpers to go with them.
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// 4. Define a few more functions that "balance" the entire split instance.
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// Split.js tries it's best to cope with min sizes that don't add up.
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// 5. Loop through the elements while pairing them off. Every pair gets an
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// `pair` object, a gutter, and special isFirst/isLast properties.
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// 6. Actually size the pair elements, insert gutters and attach event listeners.
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// 7. Balance all of the pairs to accomodate min sizes as best as possible.
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, Split = function (ids, options) {
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var dimension
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, i
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, clientDimension
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, clientAxis
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, position
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, gutterClass
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, paddingA
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, paddingB
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, pairs = []
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// 1. Set defaults to something sane. `options` doesn't have to be passed at all,
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// so create an options object if none exists. Pixel values 10, 100 and 30 are
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// arbitrary but feel natural.
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options = typeof options !== 'undefined' ? options : {}
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if (typeof options.gutterSize === 'undefined') options.gutterSize = 10
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if (typeof options.minSize === 'undefined') options.minSize = 100
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if (typeof options.snapOffset === 'undefined') options.snapOffset = 30
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if (typeof options.direction === 'undefined') options.direction = 'horizontal'
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// 2. Initialize a bunch of strings based on the direction we're splitting.
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// A lot of the behavior in the rest of the library is paramatized down to
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// rely on CSS strings and classes.
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if (options.direction == 'horizontal') {
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dimension = 'width'
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clientDimension = 'clientWidth'
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clientAxis = 'clientX'
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position = 'left'
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gutterClass = 'gutter gutter-horizontal'
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paddingA = 'paddingLeft'
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paddingB = 'paddingRight'
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if (!options.cursor) options.cursor = 'ew-resize'
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} else if (options.direction == 'vertical') {
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dimension = 'height'
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clientDimension = 'clientHeight'
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clientAxis = 'clientY'
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position = 'top'
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gutterClass = 'gutter gutter-vertical'
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paddingA = 'paddingTop'
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paddingB = 'paddingBottom'
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if (!options.cursor) options.cursor = 'ns-resize'
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}
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// 3. Define the dragging helper functions, and a few helpers to go with them.
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// Each helper is bound to a pair object that contains it's metadata. This
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// also makes it easy to store references to listeners that that will be
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// added and removed.
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//
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// Even though there are no other functions contained in them, aliasing
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// this to self saves 50 bytes or so since it's used so frequently.
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//
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// The pair object saves metadata like dragging state, position and
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// event listener references.
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//
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// startDragging calls `calculateSizes` to store the inital size in the pair object.
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// It also adds event listeners for mouse/touch events,
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// and prevents selection while dragging so avoid the selecting text.
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var startDragging = function (e) {
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// Alias frequently used variables to save space. 200 bytes.
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var self = this
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, a = self.a
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, b = self.b
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// Call the onDragStart callback.
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if (!self.dragging && options.onDragStart) {
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options.onDragStart()
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}
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// Don't actually drag the element. We emulate that in the drag function.
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e.preventDefault()
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// Set the dragging property of the pair object.
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self.dragging = true
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// Create two event listeners bound to the same pair object and store
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// them in the pair object.
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self.move = drag.bind(self)
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self.stop = stopDragging.bind(self)
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// All the binding. `window` gets the stop events in case we drag out of the elements.
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global[addEventListener]('mouseup', self.stop)
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global[addEventListener]('touchend', self.stop)
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global[addEventListener]('touchcancel', self.stop)
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self.parent[addEventListener]('mousemove', self.move)
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self.parent[addEventListener]('touchmove', self.move)
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// Disable selection. Disable!
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a[addEventListener]('selectstart', noop)
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a[addEventListener]('dragstart', noop)
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b[addEventListener]('selectstart', noop)
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b[addEventListener]('dragstart', noop)
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a.style.userSelect = 'none'
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a.style.webkitUserSelect = 'none'
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a.style.MozUserSelect = 'none'
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a.style.pointerEvents = 'none'
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b.style.userSelect = 'none'
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b.style.webkitUserSelect = 'none'
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b.style.MozUserSelect = 'none'
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b.style.pointerEvents = 'none'
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// Set the cursor, both on the gutter and the parent element.
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// Doing only a, b and gutter causes flickering.
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self.gutter.style.cursor = options.cursor
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self.parent.style.cursor = options.cursor
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// Cache the initial sizes of the pair.
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calculateSizes.call(self)
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}
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// stopDragging is very similar to startDragging in reverse.
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, stopDragging = function () {
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var self = this
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, a = self.a
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, b = self.b
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if (self.dragging && options.onDragEnd) {
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options.onDragEnd()
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}
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self.dragging = false
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// Remove the stored event listeners. This is why we store them.
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global[removeEventListener]('mouseup', self.stop)
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global[removeEventListener]('touchend', self.stop)
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global[removeEventListener]('touchcancel', self.stop)
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self.parent[removeEventListener]('mousemove', self.move)
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self.parent[removeEventListener]('touchmove', self.move)
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// Delete them once they are removed. I think this makes a difference
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// in memory usage with a lot of splits on one page. But I don't know for sure.
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delete self.stop
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delete self.move
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a[removeEventListener]('selectstart', noop)
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a[removeEventListener]('dragstart', noop)
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b[removeEventListener]('selectstart', noop)
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b[removeEventListener]('dragstart', noop)
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a.style.userSelect = ''
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a.style.webkitUserSelect = ''
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a.style.MozUserSelect = ''
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a.style.pointerEvents = ''
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b.style.userSelect = ''
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b.style.webkitUserSelect = ''
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b.style.MozUserSelect = ''
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b.style.pointerEvents = ''
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self.gutter.style.cursor = ''
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self.parent.style.cursor = ''
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}
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// drag, where all the magic happens. The logic is really quite simple:
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//
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// 1. Ignore if the pair is not dragging.
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// 2. Get the offset of the event.
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// 3. Snap offset to min if within snappable range (within min + snapOffset).
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// 4. Actually adjust each element in the pair to offset.
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//
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// ---------------------------------------------------------------------
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// | | <- this.aMin || this.bMin -> | |
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// | | | <- this.snapOffset || this.snapOffset -> | | |
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// | | | || | | |
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// | | | || | | |
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// ---------------------------------------------------------------------
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// | <- this.start this.size -> |
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, drag = function (e) {
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var offset
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if (!this.dragging) return
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// Get the offset of the event from the first side of the
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// pair `this.start`. Supports touch events, but not multitouch, so only the first
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// finger `touches[0]` is counted.
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if ('touches' in e) {
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offset = e.touches[0][clientAxis] - this.start
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} else {
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offset = e[clientAxis] - this.start
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}
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// If within snapOffset of min or max, set offset to min or max.
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// snapOffset buffers aMin and bMin, so logic is opposite for both.
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// Include the appropriate gutter sizes to prevent overflows.
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if (offset <= this.aMin + options.snapOffset + this.aGutterSize) {
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offset = this.aMin + this.aGutterSize
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} else if (offset >= this.size - (this.bMin + options.snapOffset + this.bGutterSize)) {
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offset = this.size - (this.bMin + this.bGutterSize)
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}
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// Actually adjust the size.
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adjust.call(this, offset)
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// Call the drag callback continously. Don't do anything too intensive
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// in this callback.
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if (options.onDrag) {
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options.onDrag()
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}
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}
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// Cache some important sizes when drag starts, so we don't have to do that
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// continously:
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//
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// `size`: The total size of the pair. First element + second element + first gutter + second gutter.
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// `percentage`: The percentage between 0-100 that the pair occupies in the parent.
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// `start`: The leading side of the first element.
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//
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// ------------------------------------------------ - - - - - - - - - - -
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// | aGutterSize -> ||| | |
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// | ||| | |
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// | ||| | |
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// | ||| <- bGutterSize | |
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// ------------------------------------------------ - - - - - - - - - - -
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// | <- start size -> | parentSize -> |
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, calculateSizes = function () {
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// Figure out the parent size minus padding.
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var computedStyle = global.getComputedStyle(this.parent)
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, parentSize = this.parent[clientDimension] - parseFloat(computedStyle[paddingA]) - parseFloat(computedStyle[paddingB])
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this.size = this.a[getBoundingClientRect]()[dimension] + this.b[getBoundingClientRect]()[dimension] + this.aGutterSize + this.bGutterSize
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this.percentage = Math.min(this.size / parentSize * 100, 100)
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this.start = this.a[getBoundingClientRect]()[position]
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}
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// Actually adjust the size of elements `a` and `b` to `offset` while dragging.
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// calc is used to allow calc(percentage + gutterpx) on the whole split instance,
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// which allows the viewport to be resized without additional logic.
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// Element a's size is the same as offset. b's size is total size - a size.
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// Both sizes are calculated from the initial parent percentage, then the gutter size is subtracted.
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, adjust = function (offset) {
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this.a.style[dimension] = calc + '(' + (offset / this.size * this.percentage) + '% - ' + this.aGutterSize + 'px)'
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this.b.style[dimension] = calc + '(' + (this.percentage - (offset / this.size * this.percentage)) + '% - ' + this.bGutterSize + 'px)'
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}
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// 4. Define a few more functions that "balance" the entire split instance.
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// Split.js tries it's best to cope with min sizes that don't add up.
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// At some point this should go away since it breaks out of the calc(% - px) model.
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// Maybe it's a user error if you pass uncomputable minSizes.
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, fitMin = function () {
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var self = this
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, a = self.a
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, b = self.b
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if (a[getBoundingClientRect]()[dimension] < self.aMin) {
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a.style[dimension] = (self.aMin - self.aGutterSize) + 'px'
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b.style[dimension] = (self.size - self.aMin - self.aGutterSize) + 'px'
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} else if (b[getBoundingClientRect]()[dimension] < self.bMin) {
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a.style[dimension] = (self.size - self.bMin - self.bGutterSize) + 'px'
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b.style[dimension] = (self.bMin - self.bGutterSize) + 'px'
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}
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}
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, fitMinReverse = function () {
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var self = this
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, a = self.a
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, b = self.b
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if (b[getBoundingClientRect]()[dimension] < self.bMin) {
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a.style[dimension] = (self.size - self.bMin - self.bGutterSize) + 'px'
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b.style[dimension] = (self.bMin - self.bGutterSize) + 'px'
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} else if (a[getBoundingClientRect]()[dimension] < self.aMin) {
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a.style[dimension] = (self.aMin - self.aGutterSize) + 'px'
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b.style[dimension] = (self.size - self.aMin - self.aGutterSize) + 'px'
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}
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}
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, balancePairs = function (pairs) {
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for (var i = 0; i < pairs.length; i++) {
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calculateSizes.call(pairs[i])
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fitMin.call(pairs[i])
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}
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for (i = pairs.length - 1; i >= 0; i--) {
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calculateSizes.call(pairs[i])
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fitMinReverse.call(pairs[i])
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}
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}
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, setElementSize = function (el, size, gutterSize) {
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// Split.js allows setting sizes via numbers (ideally), or if you must,
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// by string, like '300px'. This is less than ideal, because it breaks
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// the fluid layout that `calc(% - px)` provides. You're on your own if you do that,
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// make sure you calculate the gutter size by hand.
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if (typeof size !== 'string' && !(size instanceof String)) {
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if (!isIE8) {
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size = calc + '(' + size + '% - ' + gutterSize + 'px)'
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} else {
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size = options.sizes[i] + '%'
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}
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}
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el.style[dimension] = size
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}
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// No-op function to prevent default. Used to prevent selection.
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, noop = function () { return false }
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// All DOM elements in the split should have a common parent. We can grab
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// the first elements parent and hope users read the docs because the
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// behavior will be whacky otherwise.
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, parent = elementOrSelector(ids[0]).parentNode
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// Set default options.sizes to equal percentages of the parent element.
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if (!options.sizes) {
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var percent = 100 / ids.length
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options.sizes = []
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for (i = 0; i < ids.length; i++) {
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options.sizes.push(percent)
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}
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}
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// Standardize minSize to an array if it isn't already. This allows minSize
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// to be passed as a number.
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if (!Array.isArray(options.minSize)) {
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var minSizes = []
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for (i = 0; i < ids.length; i++) {
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minSizes.push(options.minSize)
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}
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options.minSize = minSizes
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}
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// 5. Loop through the elements while pairing them off. Every pair gets a
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// `pair` object, a gutter, and isFirst/isLast properties.
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//
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// Basic logic:
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//
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// - Starting with the second element `i > 0`, create `pair` objects with
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// `a = ids[i - 1]` and `b = ids[i]`
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// - Set gutter sizes based on the _pair_ being first/last. The first and last
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// pair have gutterSize / 2, since they only have one half gutter, and not two.
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// - Create gutter elements and add event listeners.
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// - Set the size of the elements, minus the gutter sizes.
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//
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// -----------------------------------------------------------------------
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// | i=0 | i=1 | i=2 | i=3 |
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// | | isFirst | | isLast |
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// | pair 0 pair 1 pair 2 |
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// | | | | |
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// -----------------------------------------------------------------------
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for (i = 0; i < ids.length; i++) {
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var el = elementOrSelector(ids[i])
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, isFirstPair = (i == 1)
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, isLastPair = (i == ids.length - 1)
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, size = options.sizes[i]
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, gutterSize = options.gutterSize
|
|
, pair
|
|
|
|
if (i > 0) {
|
|
// Create the pair object with it's metadata.
|
|
pair = {
|
|
a: elementOrSelector(ids[i - 1]),
|
|
b: el,
|
|
aMin: options.minSize[i - 1],
|
|
bMin: options.minSize[i],
|
|
dragging: false,
|
|
parent: parent,
|
|
isFirst: isFirstPair,
|
|
isLast: isLastPair,
|
|
direction: options.direction
|
|
}
|
|
|
|
// For first and last pairs, first and last gutter width is half.
|
|
pair.aGutterSize = options.gutterSize
|
|
pair.bGutterSize = options.gutterSize
|
|
|
|
if (isFirstPair) {
|
|
pair.aGutterSize = options.gutterSize / 2
|
|
}
|
|
|
|
if (isLastPair) {
|
|
pair.bGutterSize = options.gutterSize / 2
|
|
}
|
|
}
|
|
|
|
// Determine the size of the current element. IE8 is supported by
|
|
// staticly assigning sizes without draggable gutters. Assigns a string
|
|
// to `size`.
|
|
//
|
|
// IE9 and above
|
|
if (!isIE8) {
|
|
// Create gutter elements for each pair.
|
|
if (i > 0) {
|
|
var gutter = document.createElement('div')
|
|
|
|
gutter.className = gutterClass
|
|
gutter.style[dimension] = options.gutterSize + 'px'
|
|
|
|
gutter[addEventListener]('mousedown', startDragging.bind(pair))
|
|
gutter[addEventListener]('touchstart', startDragging.bind(pair))
|
|
|
|
parent.insertBefore(gutter, el)
|
|
|
|
pair.gutter = gutter
|
|
}
|
|
|
|
// Half-size gutters for first and last elements.
|
|
if (i === 0 || i == ids.length - 1) {
|
|
gutterSize = options.gutterSize / 2
|
|
}
|
|
}
|
|
|
|
// Set the element size to our determined size.
|
|
setElementSize(el, size, gutterSize)
|
|
|
|
// After the first iteration, and we have a pair object, append it to the
|
|
// list of pairs.
|
|
if (i > 0) {
|
|
pairs.push(pair)
|
|
}
|
|
}
|
|
|
|
// Balance the pairs to try to accomodate min sizes.
|
|
balancePairs(pairs)
|
|
|
|
return {
|
|
setSizes: function (sizes) {
|
|
for (var i = 0; i < sizes.length; i++) {
|
|
if (i > 0) {
|
|
var pair = pairs[i - 1]
|
|
|
|
setElementSize(pair.a, sizes[i - 1], pair.aGutterSize)
|
|
setElementSize(pair.b, sizes[i], pair.bGutterSize)
|
|
}
|
|
}
|
|
},
|
|
collapse: function (i) {
|
|
var pair
|
|
|
|
if (i === pairs.length) {
|
|
pair = pairs[i - 1]
|
|
|
|
calculateSizes.call(pair)
|
|
adjust.call(pair, pair.size - pair.bGutterSize)
|
|
} else {
|
|
pair = pairs[i]
|
|
|
|
calculateSizes.call(pair)
|
|
adjust.call(pair, pair.aGutterSize)
|
|
}
|
|
},
|
|
destroy: function () {
|
|
for (var i = 0; i < pairs.length; i++) {
|
|
pairs[i].parent.removeChild(pairs[i].gutter)
|
|
pairs[i].a.style[dimension] = ''
|
|
pairs[i].b.style[dimension] = ''
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Play nicely with module systems, and the browser too if you include it raw.
|
|
if (typeof exports !== 'undefined') {
|
|
if (typeof module !== 'undefined' && module.exports) {
|
|
exports = module.exports = Split
|
|
}
|
|
exports.Split = Split
|
|
} else {
|
|
global.Split = Split
|
|
}
|
|
|
|
// Call our wrapper function with the current global. In this case, `window`.
|
|
}).call(window); |