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drop support for ie 8

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This commit is contained in:
Nathan Cahill 2020-06-10 17:31:11 +02:00
parent 5d0f64db46
commit 03d6cb58db
1 changed files with 19 additions and 37 deletions
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56
packages/splitjs/src/split.js
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@ -1,6 +1,6 @@
// The programming goals of Split.js are to deliver readable, understandable and // 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, // maintainable code, while at the same time manually optimizing for tiny minified file size,
// browser compatibility without additional requirements, graceful fallback (IE8 is supported) // browser compatibility without additional requirements
// and very few assumptions about the user's page layout. // and very few assumptions about the user's page layout.
const global = window const global = window
const { document } = global const { document } = global
@ -16,10 +16,6 @@ const bGutterSize = '_c'
const HORIZONTAL = 'horizontal' const HORIZONTAL = 'horizontal'
const NOOP = () => false const NOOP = () => false
// Figure out if we're in IE8 or not. IE8 will still render correctly,
// but will be static instead of draggable.
const isIE8 = global.attachEvent && !global[addEventListener]
// Helper function determines which prefixes of CSS calc we need. // 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. // We only need to do this once on startup, when this anonymous function is called.
// //
@ -92,11 +88,7 @@ const defaultElementStyleFn = (dim, size, gutSize) => {
const style = {} const style = {}
if (!isString(size)) { if (!isString(size)) {
if (!isIE8) { style[dim] = `${calc}(${size}% - ${gutSize}px)`
style[dim] = `${calc}(${size}% - ${gutSize}px)`
} else {
style[dim] = `${size}%`
}
} else { } else {
style[dim] = size style[dim] = size
} }
@ -623,30 +615,27 @@ const Split = (idsOption, options = {}) => {
// staticly assigning sizes without draggable gutters. Assigns a string // staticly assigning sizes without draggable gutters. Assigns a string
// to `size`. // to `size`.
// //
// IE9 and above // Create gutter elements for each pair.
if (!isIE8) { if (i > 0) {
// Create gutter elements for each pair. const gutterElement = gutter(i, direction, element.element)
if (i > 0) { setGutterSize(gutterElement, gutterSize, i)
const gutterElement = gutter(i, direction, element.element)
setGutterSize(gutterElement, gutterSize, i)
// Save bound event listener for removal later // Save bound event listener for removal later
pair[gutterStartDragging] = startDragging.bind(pair) pair[gutterStartDragging] = startDragging.bind(pair)
// Attach bound event listener // Attach bound event listener
gutterElement[addEventListener]( gutterElement[addEventListener](
'mousedown', 'mousedown',
pair[gutterStartDragging], pair[gutterStartDragging],
) )
gutterElement[addEventListener]( gutterElement[addEventListener](
'touchstart', 'touchstart',
pair[gutterStartDragging], pair[gutterStartDragging],
) )
parent.insertBefore(gutterElement, element.element) parent.insertBefore(gutterElement, element.element)
pair.gutter = gutterElement pair.gutter = gutterElement
}
} }
setElementSize( setElementSize(
@ -744,13 +733,6 @@ const Split = (idsOption, options = {}) => {
}) })
} }
if (isIE8) {
return {
setSizes,
destroy,
}
}
return { return {
setSizes, setSizes,
getSizes, getSizes,