Merge branch 'release/2.2.0' into develop

[github/Chocobozzz/PeerTube.git] / client / src / app / shared / misc / utils.ts

diff --git a/client/src/app/shared/misc/utils.ts b/client/src/app/shared/misc/utils.ts
index 098496d45348a70fa8a57297da4d99b62c479741..3d1e906a206b0018e5da196860ff4f8bf670b088 100644 (file)
--- a/client/src/app/shared/misc/utils.ts
+++ b/client/src/app/shared/misc/utils.ts
@@ -1,9 +1,8 @@
-// Thanks: https://stackoverflow.com/questions/901115/how-can-i-get-query-string-values-in-javascript
-
 import { DatePipe } from '@angular/common'
 import { environment } from '../../../environments/environment'
 import { AuthService } from '../../core/auth'
 
+// Thanks: https://stackoverflow.com/questions/901115/how-can-i-get-query-string-values-in-javascript
 function getParameterByName (name: string, url: string) {
   if (!url) url = window.location.href
   name = name.replace(/[\[\]]/g, '\\$&')
@@ -134,21 +133,59 @@ function scrollToTop () {
   window.scroll(0, 0)
 }
 
-// Thanks https://stackoverflow.com/a/16187766
-function compareSemVer (a: string, b: string) {
-  const regExStrip0 = /(\.0+)+$/
-  const segmentsA = a.replace(regExStrip0, '').split('.')
-  const segmentsB = b.replace(regExStrip0, '').split('.')
+// Thanks: https://github.com/uupaa/dynamic-import-polyfill
+function importModule (path: string) {
+  return new Promise((resolve, reject) => {
+    const vector = '$importModule$' + Math.random().toString(32).slice(2)
+    const script = document.createElement('script')
+
+    const destructor = () => {
+      delete window[ vector ]
+      script.onerror = null
+      script.onload = null
+      script.remove()
+      URL.revokeObjectURL(script.src)
+      script.src = ''
+    }
+
+    script.defer = true
+    script.type = 'module'
+
+    script.onerror = () => {
+      reject(new Error(`Failed to import: ${path}`))
+      destructor()
+    }
+    script.onload = () => {
+      resolve(window[ vector ])
+      destructor()
+    }
+    const absURL = (environment.apiUrl || window.location.origin) + path
+    const loader = `import * as m from "${absURL}"; window.${vector} = m;` // export Module
+    const blob = new Blob([ loader ], { type: 'text/javascript' })
+    script.src = URL.createObjectURL(blob)
 
-  const l = Math.min(segmentsA.length, segmentsB.length)
+    document.head.appendChild(script)
+  })
+}
 
-  for (let i = 0; i < l; i++) {
-    const diff = parseInt(segmentsA[ i ], 10) - parseInt(segmentsB[ i ], 10)
+function isInViewport (el: HTMLElement) {
+  const bounding = el.getBoundingClientRect()
+  return (
+      bounding.top >= 0 &&
+      bounding.left >= 0 &&
+      bounding.bottom <= (window.innerHeight || document.documentElement.clientHeight) &&
+      bounding.right <= (window.innerWidth || document.documentElement.clientWidth)
+  )
+}
 
-    if (diff) return diff
-  }
+function isXPercentInViewport (el: HTMLElement, percentVisible: number) {
+  const rect = el.getBoundingClientRect()
+  const windowHeight = (window.innerHeight || document.documentElement.clientHeight)
 
-  return segmentsA.length - segmentsB.length
+  return !(
+    Math.floor(100 - (((rect.top >= 0 ? 0 : rect.top) / +-(rect.height / 1)) * 100)) < percentVisible ||
+    Math.floor(100 - ((rect.bottom - windowHeight) / rect.height) * 100) < percentVisible
+  )
 }
 
 export {
@@ -161,9 +198,11 @@ export {
   getAbsoluteAPIUrl,
   dateToHuman,
   immutableAssign,
-  compareSemVer,
   objectToFormData,
   objectLineFeedToHtml,
   removeElementFromArray,
-  scrollToTop
+  importModule,
+  scrollToTop,
+  isInViewport,
+  isXPercentInViewport
 }