diff options
Diffstat (limited to 'src/Utils.ts')
| -rw-r--r-- | src/Utils.ts | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/src/Utils.ts b/src/Utils.ts index 4b892aa70..9a2f01f80 100644 --- a/src/Utils.ts +++ b/src/Utils.ts @@ -320,7 +320,7 @@ const easeInOutQuad = (currentTime: number, start: number, change: number, durat return (-change / 2) * (newCurrentTime * (newCurrentTime - 2) - 1) + start; }; -export default function smoothScroll(duration: number, element: HTMLElement, to: number) { +export function smoothScroll(duration: number, element: HTMLElement, to: number) { const start = element.scrollTop; const change = to - start; const startDate = new Date().getTime(); @@ -337,4 +337,28 @@ export default function smoothScroll(duration: number, element: HTMLElement, to: } }; animateScroll(); +} +export function addStyleSheet(styleType: string = "text/css") { + let style = document.createElement("style"); + style.type = styleType; + var sheets = document.head.appendChild(style); + return (sheets as any).sheet; +} +export function addStyleSheetRule(sheet: any, selector: any, css: any) { + var propText = typeof css === "string" ? css : Object.keys(css).map(p => p + ":" + (p === "content" ? "'" + css[p] + "'" : css[p])).join(";"); + return sheet.insertRule("." + selector + "{" + propText + "}", sheet.cssRules.length); +} +export function removeStyleSheetRule(sheet: any, rule: number) { + if (sheet.rules.length) { + sheet.removeRule(rule); + return true; + } + return false; +} +export function clearStyleSheetRules(sheet: any) { + if (sheet.rules.length) { + numberRange(sheet.rules.length).map(n => sheet.removeRule(0)); + return true; + } + return false; }
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