mirror of
https://github.com/fluencelabs/js-libp2p-crypto
synced 2025-03-16 08:21:05 +00:00
783 lines
30 KiB
JavaScript
783 lines
30 KiB
JavaScript
/*! Split.js - v1.5.11 */
|
|
|
|
(function (global, factory) {
|
|
typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
|
|
typeof define === 'function' && define.amd ? define(factory) :
|
|
(global.Split = factory());
|
|
}(this, (function () { 'use strict';
|
|
|
|
// The programming goals of Split.js are to deliver readable, understandable and
|
|
// maintainable code, while at the same time manually optimizing for tiny minified file size,
|
|
// browser compatibility without additional requirements, graceful fallback (IE8 is supported)
|
|
// and very few assumptions about the user's page layout.
|
|
var global = window;
|
|
var document = global.document;
|
|
|
|
// Save a couple long function names that are used frequently.
|
|
// This optimization saves around 400 bytes.
|
|
var addEventListener = 'addEventListener';
|
|
var removeEventListener = 'removeEventListener';
|
|
var getBoundingClientRect = 'getBoundingClientRect';
|
|
var gutterStartDragging = '_a';
|
|
var aGutterSize = '_b';
|
|
var bGutterSize = '_c';
|
|
var HORIZONTAL = 'horizontal';
|
|
var NOOP = function () { return false; };
|
|
|
|
// Figure out if we're in IE8 or not. IE8 will still render correctly,
|
|
// but will be static instead of draggable.
|
|
var isIE8 = global.attachEvent && !global[addEventListener];
|
|
|
|
// Helper function determines which prefixes of CSS calc we need.
|
|
// We only need to do this once on startup, when this anonymous function is called.
|
|
//
|
|
// Tests -webkit, -moz and -o prefixes. Modified from StackOverflow:
|
|
// http://stackoverflow.com/questions/16625140/js-feature-detection-to-detect-the-usage-of-webkit-calc-over-calc/16625167#16625167
|
|
var calc = (['', '-webkit-', '-moz-', '-o-']
|
|
.filter(function (prefix) {
|
|
var el = document.createElement('div');
|
|
el.style.cssText = "width:" + prefix + "calc(9px)";
|
|
|
|
return !!el.style.length
|
|
})
|
|
.shift()) + "calc";
|
|
|
|
// Helper function checks if its argument is a string-like type
|
|
var isString = function (v) { return typeof v === 'string' || v instanceof String; };
|
|
|
|
// Helper function allows elements and string selectors to be used
|
|
// interchangeably. In either case an element is returned. This allows us to
|
|
// do `Split([elem1, elem2])` as well as `Split(['#id1', '#id2'])`.
|
|
var elementOrSelector = function (el) {
|
|
if (isString(el)) {
|
|
var ele = document.querySelector(el);
|
|
if (!ele) {
|
|
throw new Error(("Selector " + el + " did not match a DOM element"))
|
|
}
|
|
return ele
|
|
}
|
|
|
|
return el
|
|
};
|
|
|
|
// Helper function gets a property from the properties object, with a default fallback
|
|
var getOption = function (options, propName, def) {
|
|
var value = options[propName];
|
|
if (value !== undefined) {
|
|
return value
|
|
}
|
|
return def
|
|
};
|
|
|
|
var getGutterSize = function (gutterSize, isFirst, isLast, gutterAlign) {
|
|
if (isFirst) {
|
|
if (gutterAlign === 'end') {
|
|
return 0
|
|
}
|
|
if (gutterAlign === 'center') {
|
|
return gutterSize / 2
|
|
}
|
|
} else if (isLast) {
|
|
if (gutterAlign === 'start') {
|
|
return 0
|
|
}
|
|
if (gutterAlign === 'center') {
|
|
return gutterSize / 2
|
|
}
|
|
}
|
|
|
|
return gutterSize
|
|
};
|
|
|
|
// Default options
|
|
var defaultGutterFn = function (i, gutterDirection) {
|
|
var gut = document.createElement('div');
|
|
gut.className = "gutter gutter-" + gutterDirection;
|
|
return gut
|
|
};
|
|
|
|
var defaultElementStyleFn = function (dim, size, gutSize) {
|
|
var style = {};
|
|
|
|
if (!isString(size)) {
|
|
if (!isIE8) {
|
|
style[dim] = calc + "(" + size + "% - " + gutSize + "px)";
|
|
} else {
|
|
style[dim] = size + "%";
|
|
}
|
|
} else {
|
|
style[dim] = size;
|
|
}
|
|
|
|
return style
|
|
};
|
|
|
|
var defaultGutterStyleFn = function (dim, gutSize) {
|
|
var obj;
|
|
|
|
return (( obj = {}, obj[dim] = (gutSize + "px"), obj ));
|
|
};
|
|
|
|
// The main function to initialize a split. Split.js thinks about each pair
|
|
// of elements as an independant pair. Dragging the gutter between two elements
|
|
// only changes the dimensions of elements in that pair. This is key to understanding
|
|
// how the following functions operate, since each function is bound to a pair.
|
|
//
|
|
// A pair object is shaped like this:
|
|
//
|
|
// {
|
|
// a: DOM element,
|
|
// b: DOM element,
|
|
// aMin: Number,
|
|
// bMin: Number,
|
|
// dragging: Boolean,
|
|
// parent: DOM element,
|
|
// direction: 'horizontal' | 'vertical'
|
|
// }
|
|
//
|
|
// The basic sequence:
|
|
//
|
|
// 1. Set defaults to something sane. `options` doesn't have to be passed at all.
|
|
// 2. Initialize a bunch of strings based on the direction we're splitting.
|
|
// A lot of the behavior in the rest of the library is paramatized down to
|
|
// rely on CSS strings and classes.
|
|
// 3. Define the dragging helper functions, and a few helpers to go with them.
|
|
// 4. Loop through the elements while pairing them off. Every pair gets an
|
|
// `pair` object and a gutter.
|
|
// 5. Actually size the pair elements, insert gutters and attach event listeners.
|
|
var Split = function (idsOption, options) {
|
|
if ( options === void 0 ) options = {};
|
|
|
|
var ids = idsOption;
|
|
var dimension;
|
|
var clientAxis;
|
|
var position;
|
|
var positionEnd;
|
|
var clientSize;
|
|
var elements;
|
|
|
|
// Allow HTMLCollection to be used as an argument when supported
|
|
if (Array.from) {
|
|
ids = Array.from(ids);
|
|
}
|
|
|
|
// All DOM elements in the split should have a common parent. We can grab
|
|
// the first elements parent and hope users read the docs because the
|
|
// behavior will be whacky otherwise.
|
|
var firstElement = elementOrSelector(ids[0]);
|
|
var parent = firstElement.parentNode;
|
|
var parentStyle = getComputedStyle ? getComputedStyle(parent) : null;
|
|
var parentFlexDirection = parentStyle ? parentStyle.flexDirection : null;
|
|
|
|
// Set default options.sizes to equal percentages of the parent element.
|
|
var sizes = getOption(options, 'sizes') || ids.map(function () { return 100 / ids.length; });
|
|
|
|
// Standardize minSize to an array if it isn't already. This allows minSize
|
|
// to be passed as a number.
|
|
var minSize = getOption(options, 'minSize', 100);
|
|
var minSizes = Array.isArray(minSize) ? minSize : ids.map(function () { return minSize; });
|
|
|
|
// Get other options
|
|
var expandToMin = getOption(options, 'expandToMin', false);
|
|
var gutterSize = getOption(options, 'gutterSize', 10);
|
|
var gutterAlign = getOption(options, 'gutterAlign', 'center');
|
|
var snapOffset = getOption(options, 'snapOffset', 30);
|
|
var dragInterval = getOption(options, 'dragInterval', 1);
|
|
var direction = getOption(options, 'direction', HORIZONTAL);
|
|
var cursor = getOption(
|
|
options,
|
|
'cursor',
|
|
direction === HORIZONTAL ? 'col-resize' : 'row-resize'
|
|
);
|
|
var gutter = getOption(options, 'gutter', defaultGutterFn);
|
|
var elementStyle = getOption(
|
|
options,
|
|
'elementStyle',
|
|
defaultElementStyleFn
|
|
);
|
|
var gutterStyle = getOption(options, 'gutterStyle', defaultGutterStyleFn);
|
|
|
|
// 2. Initialize a bunch of strings based on the direction we're splitting.
|
|
// A lot of the behavior in the rest of the library is paramatized down to
|
|
// rely on CSS strings and classes.
|
|
if (direction === HORIZONTAL) {
|
|
dimension = 'width';
|
|
clientAxis = 'clientX';
|
|
position = 'left';
|
|
positionEnd = 'right';
|
|
clientSize = 'clientWidth';
|
|
} else if (direction === 'vertical') {
|
|
dimension = 'height';
|
|
clientAxis = 'clientY';
|
|
position = 'top';
|
|
positionEnd = 'bottom';
|
|
clientSize = 'clientHeight';
|
|
}
|
|
|
|
// 3. Define the dragging helper functions, and a few helpers to go with them.
|
|
// Each helper is bound to a pair object that contains its metadata. This
|
|
// also makes it easy to store references to listeners that that will be
|
|
// added and removed.
|
|
//
|
|
// Even though there are no other functions contained in them, aliasing
|
|
// this to self saves 50 bytes or so since it's used so frequently.
|
|
//
|
|
// The pair object saves metadata like dragging state, position and
|
|
// event listener references.
|
|
|
|
function setElementSize(el, size, gutSize, i) {
|
|
// Split.js allows setting sizes via numbers (ideally), or if you must,
|
|
// by string, like '300px'. This is less than ideal, because it breaks
|
|
// the fluid layout that `calc(% - px)` provides. You're on your own if you do that,
|
|
// make sure you calculate the gutter size by hand.
|
|
var style = elementStyle(dimension, size, gutSize, i);
|
|
|
|
Object.keys(style).forEach(function (prop) {
|
|
// eslint-disable-next-line no-param-reassign
|
|
el.style[prop] = style[prop];
|
|
});
|
|
}
|
|
|
|
function setGutterSize(gutterElement, gutSize, i) {
|
|
var style = gutterStyle(dimension, gutSize, i);
|
|
|
|
Object.keys(style).forEach(function (prop) {
|
|
// eslint-disable-next-line no-param-reassign
|
|
gutterElement.style[prop] = style[prop];
|
|
});
|
|
}
|
|
|
|
function getSizes() {
|
|
return elements.map(function (element) { return element.size; })
|
|
}
|
|
|
|
// Supports touch events, but not multitouch, so only the first
|
|
// finger `touches[0]` is counted.
|
|
function getMousePosition(e) {
|
|
if ('touches' in e) { return e.touches[0][clientAxis] }
|
|
return e[clientAxis]
|
|
}
|
|
|
|
// Actually adjust the size of elements `a` and `b` to `offset` while dragging.
|
|
// calc is used to allow calc(percentage + gutterpx) on the whole split instance,
|
|
// which allows the viewport to be resized without additional logic.
|
|
// Element a's size is the same as offset. b's size is total size - a size.
|
|
// Both sizes are calculated from the initial parent percentage,
|
|
// then the gutter size is subtracted.
|
|
function adjust(offset) {
|
|
var a = elements[this.a];
|
|
var b = elements[this.b];
|
|
var percentage = a.size + b.size;
|
|
|
|
a.size = (offset / this.size) * percentage;
|
|
b.size = percentage - (offset / this.size) * percentage;
|
|
|
|
setElementSize(a.element, a.size, this[aGutterSize], a.i);
|
|
setElementSize(b.element, b.size, this[bGutterSize], b.i);
|
|
}
|
|
|
|
// drag, where all the magic happens. The logic is really quite simple:
|
|
//
|
|
// 1. Ignore if the pair is not dragging.
|
|
// 2. Get the offset of the event.
|
|
// 3. Snap offset to min if within snappable range (within min + snapOffset).
|
|
// 4. Actually adjust each element in the pair to offset.
|
|
//
|
|
// ---------------------------------------------------------------------
|
|
// | | <- a.minSize || b.minSize -> | |
|
|
// | | | <- this.snapOffset || this.snapOffset -> | | |
|
|
// | | | || | | |
|
|
// | | | || | | |
|
|
// ---------------------------------------------------------------------
|
|
// | <- this.start this.size -> |
|
|
function drag(e) {
|
|
var offset;
|
|
var a = elements[this.a];
|
|
var b = elements[this.b];
|
|
|
|
if (!this.dragging) { return }
|
|
|
|
// Get the offset of the event from the first side of the
|
|
// pair `this.start`. Then offset by the initial position of the
|
|
// mouse compared to the gutter size.
|
|
offset =
|
|
getMousePosition(e) -
|
|
this.start +
|
|
(this[aGutterSize] - this.dragOffset);
|
|
|
|
if (dragInterval > 1) {
|
|
offset = Math.round(offset / dragInterval) * dragInterval;
|
|
}
|
|
|
|
// If within snapOffset of min or max, set offset to min or max.
|
|
// snapOffset buffers a.minSize and b.minSize, so logic is opposite for both.
|
|
// Include the appropriate gutter sizes to prevent overflows.
|
|
if (offset <= a.minSize + snapOffset + this[aGutterSize]) {
|
|
offset = a.minSize + this[aGutterSize];
|
|
} else if (
|
|
offset >=
|
|
this.size - (b.minSize + snapOffset + this[bGutterSize])
|
|
) {
|
|
offset = this.size - (b.minSize + this[bGutterSize]);
|
|
}
|
|
|
|
// Actually adjust the size.
|
|
adjust.call(this, offset);
|
|
|
|
// Call the drag callback continously. Don't do anything too intensive
|
|
// in this callback.
|
|
getOption(options, 'onDrag', NOOP)();
|
|
}
|
|
|
|
// Cache some important sizes when drag starts, so we don't have to do that
|
|
// continously:
|
|
//
|
|
// `size`: The total size of the pair. First + second + first gutter + second gutter.
|
|
// `start`: The leading side of the first element.
|
|
//
|
|
// ------------------------------------------------
|
|
// | aGutterSize -> ||| |
|
|
// | ||| |
|
|
// | ||| |
|
|
// | ||| <- bGutterSize |
|
|
// ------------------------------------------------
|
|
// | <- start size -> |
|
|
function calculateSizes() {
|
|
// Figure out the parent size minus padding.
|
|
var a = elements[this.a].element;
|
|
var b = elements[this.b].element;
|
|
|
|
var aBounds = a[getBoundingClientRect]();
|
|
var bBounds = b[getBoundingClientRect]();
|
|
|
|
this.size =
|
|
aBounds[dimension] +
|
|
bBounds[dimension] +
|
|
this[aGutterSize] +
|
|
this[bGutterSize];
|
|
this.start = aBounds[position];
|
|
this.end = aBounds[positionEnd];
|
|
}
|
|
|
|
function innerSize(element) {
|
|
// Return nothing if getComputedStyle is not supported (< IE9)
|
|
// Or if parent element has no layout yet
|
|
if (!getComputedStyle) { return null }
|
|
|
|
var computedStyle = getComputedStyle(element);
|
|
|
|
if (!computedStyle) { return null }
|
|
|
|
var size = element[clientSize];
|
|
|
|
if (size === 0) { return null }
|
|
|
|
if (direction === HORIZONTAL) {
|
|
size -=
|
|
parseFloat(computedStyle.paddingLeft) +
|
|
parseFloat(computedStyle.paddingRight);
|
|
} else {
|
|
size -=
|
|
parseFloat(computedStyle.paddingTop) +
|
|
parseFloat(computedStyle.paddingBottom);
|
|
}
|
|
|
|
return size
|
|
}
|
|
|
|
// When specifying percentage sizes that are less than the computed
|
|
// size of the element minus the gutter, the lesser percentages must be increased
|
|
// (and decreased from the other elements) to make space for the pixels
|
|
// subtracted by the gutters.
|
|
function trimToMin(sizesToTrim) {
|
|
// Try to get inner size of parent element.
|
|
// If it's no supported, return original sizes.
|
|
var parentSize = innerSize(parent);
|
|
if (parentSize === null) {
|
|
return sizesToTrim
|
|
}
|
|
|
|
if (minSizes.reduce(function (a, b) { return a + b; }, 0) > parentSize) {
|
|
return sizesToTrim
|
|
}
|
|
|
|
// Keep track of the excess pixels, the amount of pixels over the desired percentage
|
|
// Also keep track of the elements with pixels to spare, to decrease after if needed
|
|
var excessPixels = 0;
|
|
var toSpare = [];
|
|
|
|
var pixelSizes = sizesToTrim.map(function (size, i) {
|
|
// Convert requested percentages to pixel sizes
|
|
var pixelSize = (parentSize * size) / 100;
|
|
var elementGutterSize = getGutterSize(
|
|
gutterSize,
|
|
i === 0,
|
|
i === sizesToTrim.length - 1,
|
|
gutterAlign
|
|
);
|
|
var elementMinSize = minSizes[i] + elementGutterSize;
|
|
|
|
// If element is too smal, increase excess pixels by the difference
|
|
// and mark that it has no pixels to spare
|
|
if (pixelSize < elementMinSize) {
|
|
excessPixels += elementMinSize - pixelSize;
|
|
toSpare.push(0);
|
|
return elementMinSize
|
|
}
|
|
|
|
// Otherwise, mark the pixels it has to spare and return it's original size
|
|
toSpare.push(pixelSize - elementMinSize);
|
|
return pixelSize
|
|
});
|
|
|
|
// If nothing was adjusted, return the original sizes
|
|
if (excessPixels === 0) {
|
|
return sizesToTrim
|
|
}
|
|
|
|
return pixelSizes.map(function (pixelSize, i) {
|
|
var newPixelSize = pixelSize;
|
|
|
|
// While there's still pixels to take, and there's enough pixels to spare,
|
|
// take as many as possible up to the total excess pixels
|
|
if (excessPixels > 0 && toSpare[i] - excessPixels > 0) {
|
|
var takenPixels = Math.min(
|
|
excessPixels,
|
|
toSpare[i] - excessPixels
|
|
);
|
|
|
|
// Subtract the amount taken for the next iteration
|
|
excessPixels -= takenPixels;
|
|
newPixelSize = pixelSize - takenPixels;
|
|
}
|
|
|
|
// Return the pixel size adjusted as a percentage
|
|
return (newPixelSize / parentSize) * 100
|
|
})
|
|
}
|
|
|
|
// stopDragging is very similar to startDragging in reverse.
|
|
function stopDragging() {
|
|
var self = this;
|
|
var a = elements[self.a].element;
|
|
var b = elements[self.b].element;
|
|
|
|
if (self.dragging) {
|
|
getOption(options, 'onDragEnd', NOOP)(getSizes());
|
|
}
|
|
|
|
self.dragging = false;
|
|
|
|
// Remove the stored event listeners. This is why we store them.
|
|
global[removeEventListener]('mouseup', self.stop);
|
|
global[removeEventListener]('touchend', self.stop);
|
|
global[removeEventListener]('touchcancel', self.stop);
|
|
global[removeEventListener]('mousemove', self.move);
|
|
global[removeEventListener]('touchmove', self.move);
|
|
|
|
// Clear bound function references
|
|
self.stop = null;
|
|
self.move = null;
|
|
|
|
a[removeEventListener]('selectstart', NOOP);
|
|
a[removeEventListener]('dragstart', NOOP);
|
|
b[removeEventListener]('selectstart', NOOP);
|
|
b[removeEventListener]('dragstart', NOOP);
|
|
|
|
a.style.userSelect = '';
|
|
a.style.webkitUserSelect = '';
|
|
a.style.MozUserSelect = '';
|
|
a.style.pointerEvents = '';
|
|
|
|
b.style.userSelect = '';
|
|
b.style.webkitUserSelect = '';
|
|
b.style.MozUserSelect = '';
|
|
b.style.pointerEvents = '';
|
|
|
|
self.gutter.style.cursor = '';
|
|
self.parent.style.cursor = '';
|
|
document.body.style.cursor = '';
|
|
}
|
|
|
|
// startDragging calls `calculateSizes` to store the inital size in the pair object.
|
|
// It also adds event listeners for mouse/touch events,
|
|
// and prevents selection while dragging so avoid the selecting text.
|
|
function startDragging(e) {
|
|
// Right-clicking can't start dragging.
|
|
if ('button' in e && e.button !== 0) {
|
|
return
|
|
}
|
|
|
|
// Alias frequently used variables to save space. 200 bytes.
|
|
var self = this;
|
|
var a = elements[self.a].element;
|
|
var b = elements[self.b].element;
|
|
|
|
// Call the onDragStart callback.
|
|
if (!self.dragging) {
|
|
getOption(options, 'onDragStart', NOOP)(getSizes());
|
|
}
|
|
|
|
// Don't actually drag the element. We emulate that in the drag function.
|
|
e.preventDefault();
|
|
|
|
// Set the dragging property of the pair object.
|
|
self.dragging = true;
|
|
|
|
// Create two event listeners bound to the same pair object and store
|
|
// them in the pair object.
|
|
self.move = drag.bind(self);
|
|
self.stop = stopDragging.bind(self);
|
|
|
|
// All the binding. `window` gets the stop events in case we drag out of the elements.
|
|
global[addEventListener]('mouseup', self.stop);
|
|
global[addEventListener]('touchend', self.stop);
|
|
global[addEventListener]('touchcancel', self.stop);
|
|
global[addEventListener]('mousemove', self.move);
|
|
global[addEventListener]('touchmove', self.move);
|
|
|
|
// Disable selection. Disable!
|
|
a[addEventListener]('selectstart', NOOP);
|
|
a[addEventListener]('dragstart', NOOP);
|
|
b[addEventListener]('selectstart', NOOP);
|
|
b[addEventListener]('dragstart', NOOP);
|
|
|
|
a.style.userSelect = 'none';
|
|
a.style.webkitUserSelect = 'none';
|
|
a.style.MozUserSelect = 'none';
|
|
a.style.pointerEvents = 'none';
|
|
|
|
b.style.userSelect = 'none';
|
|
b.style.webkitUserSelect = 'none';
|
|
b.style.MozUserSelect = 'none';
|
|
b.style.pointerEvents = 'none';
|
|
|
|
// Set the cursor at multiple levels
|
|
self.gutter.style.cursor = cursor;
|
|
self.parent.style.cursor = cursor;
|
|
document.body.style.cursor = cursor;
|
|
|
|
// Cache the initial sizes of the pair.
|
|
calculateSizes.call(self);
|
|
|
|
// Determine the position of the mouse compared to the gutter
|
|
self.dragOffset = getMousePosition(e) - self.end;
|
|
}
|
|
|
|
// adjust sizes to ensure percentage is within min size and gutter.
|
|
sizes = trimToMin(sizes);
|
|
|
|
// 5. Create pair and element objects. Each pair has an index reference to
|
|
// elements `a` and `b` of the pair (first and second elements).
|
|
// Loop through the elements while pairing them off. Every pair gets a
|
|
// `pair` object and a gutter.
|
|
//
|
|
// Basic logic:
|
|
//
|
|
// - Starting with the second element `i > 0`, create `pair` objects with
|
|
// `a = i - 1` and `b = i`
|
|
// - Set gutter sizes based on the _pair_ being first/last. The first and last
|
|
// pair have gutterSize / 2, since they only have one half gutter, and not two.
|
|
// - Create gutter elements and add event listeners.
|
|
// - Set the size of the elements, minus the gutter sizes.
|
|
//
|
|
// -----------------------------------------------------------------------
|
|
// | i=0 | i=1 | i=2 | i=3 |
|
|
// | | | | |
|
|
// | pair 0 pair 1 pair 2 |
|
|
// | | | | |
|
|
// -----------------------------------------------------------------------
|
|
var pairs = [];
|
|
elements = ids.map(function (id, i) {
|
|
// Create the element object.
|
|
var element = {
|
|
element: elementOrSelector(id),
|
|
size: sizes[i],
|
|
minSize: minSizes[i],
|
|
i: i,
|
|
};
|
|
|
|
var pair;
|
|
|
|
if (i > 0) {
|
|
// Create the pair object with its metadata.
|
|
pair = {
|
|
a: i - 1,
|
|
b: i,
|
|
dragging: false,
|
|
direction: direction,
|
|
parent: parent,
|
|
};
|
|
|
|
pair[aGutterSize] = getGutterSize(
|
|
gutterSize,
|
|
i - 1 === 0,
|
|
false,
|
|
gutterAlign
|
|
);
|
|
pair[bGutterSize] = getGutterSize(
|
|
gutterSize,
|
|
false,
|
|
i === ids.length - 1,
|
|
gutterAlign
|
|
);
|
|
|
|
// if the parent has a reverse flex-direction, switch the pair elements.
|
|
if (
|
|
parentFlexDirection === 'row-reverse' ||
|
|
parentFlexDirection === 'column-reverse'
|
|
) {
|
|
var temp = pair.a;
|
|
pair.a = pair.b;
|
|
pair.b = temp;
|
|
}
|
|
}
|
|
|
|
// 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 gutterElement = gutter(i, direction, element.element);
|
|
setGutterSize(gutterElement, gutterSize, i);
|
|
|
|
// Save bound event listener for removal later
|
|
pair[gutterStartDragging] = startDragging.bind(pair);
|
|
|
|
// Attach bound event listener
|
|
gutterElement[addEventListener](
|
|
'mousedown',
|
|
pair[gutterStartDragging]
|
|
);
|
|
gutterElement[addEventListener](
|
|
'touchstart',
|
|
pair[gutterStartDragging]
|
|
);
|
|
|
|
parent.insertBefore(gutterElement, element.element);
|
|
|
|
pair.gutter = gutterElement;
|
|
}
|
|
}
|
|
|
|
setElementSize(
|
|
element.element,
|
|
element.size,
|
|
getGutterSize(
|
|
gutterSize,
|
|
i === 0,
|
|
i === ids.length - 1,
|
|
gutterAlign
|
|
),
|
|
i
|
|
);
|
|
|
|
// After the first iteration, and we have a pair object, append it to the
|
|
// list of pairs.
|
|
if (i > 0) {
|
|
pairs.push(pair);
|
|
}
|
|
|
|
return element
|
|
});
|
|
|
|
function adjustToMin(element) {
|
|
var isLast = element.i === pairs.length;
|
|
var pair = isLast ? pairs[element.i - 1] : pairs[element.i];
|
|
|
|
calculateSizes.call(pair);
|
|
|
|
var size = isLast
|
|
? pair.size - element.minSize - pair[bGutterSize]
|
|
: element.minSize + pair[aGutterSize];
|
|
|
|
adjust.call(pair, size);
|
|
}
|
|
|
|
elements.forEach(function (element) {
|
|
var computedSize = element.element[getBoundingClientRect]()[dimension];
|
|
|
|
if (computedSize < element.minSize) {
|
|
if (expandToMin) {
|
|
adjustToMin(element);
|
|
} else {
|
|
// eslint-disable-next-line no-param-reassign
|
|
element.minSize = computedSize;
|
|
}
|
|
}
|
|
});
|
|
|
|
function setSizes(newSizes) {
|
|
var trimmed = trimToMin(newSizes);
|
|
trimmed.forEach(function (newSize, i) {
|
|
if (i > 0) {
|
|
var pair = pairs[i - 1];
|
|
|
|
var a = elements[pair.a];
|
|
var b = elements[pair.b];
|
|
|
|
a.size = trimmed[i - 1];
|
|
b.size = newSize;
|
|
|
|
setElementSize(a.element, a.size, pair[aGutterSize], a.i);
|
|
setElementSize(b.element, b.size, pair[bGutterSize], b.i);
|
|
}
|
|
});
|
|
}
|
|
|
|
function destroy(preserveStyles, preserveGutter) {
|
|
pairs.forEach(function (pair) {
|
|
if (preserveGutter !== true) {
|
|
pair.parent.removeChild(pair.gutter);
|
|
} else {
|
|
pair.gutter[removeEventListener](
|
|
'mousedown',
|
|
pair[gutterStartDragging]
|
|
);
|
|
pair.gutter[removeEventListener](
|
|
'touchstart',
|
|
pair[gutterStartDragging]
|
|
);
|
|
}
|
|
|
|
if (preserveStyles !== true) {
|
|
var style = elementStyle(
|
|
dimension,
|
|
pair.a.size,
|
|
pair[aGutterSize]
|
|
);
|
|
|
|
Object.keys(style).forEach(function (prop) {
|
|
elements[pair.a].element.style[prop] = '';
|
|
elements[pair.b].element.style[prop] = '';
|
|
});
|
|
}
|
|
});
|
|
}
|
|
|
|
if (isIE8) {
|
|
return {
|
|
setSizes: setSizes,
|
|
destroy: destroy,
|
|
}
|
|
}
|
|
|
|
return {
|
|
setSizes: setSizes,
|
|
getSizes: getSizes,
|
|
collapse: function collapse(i) {
|
|
adjustToMin(elements[i]);
|
|
},
|
|
destroy: destroy,
|
|
parent: parent,
|
|
pairs: pairs,
|
|
}
|
|
};
|
|
|
|
return Split;
|
|
|
|
})));
|