apps/workbench/app/assets/javascripts/components/save_ui_state.js

   1 // Copyright (C) The Arvados Authors. All rights reserved.
   2 //
   3 // SPDX-License-Identifier: AGPL-3.0
   4
   5 window.SaveUIState = {
   6     saveState: function() {
   7         var state = history.state || {}
   8         state.bodyHeight = window.getComputedStyle(document.body)['height']
   9         state.currentState = this.currentState()
  10         history.replaceState(state, '')
  11     },
  12     oninit: function(vnode) {
  13         vnode.state.currentState = vnode.attrs.currentState
  14         var hstate = history.state || {}
  15
  16         if (vnode.attrs.saveBodyHeight && hstate.bodyHeight) {
  17             document.body.style['min-height'] = hstate.bodyHeight
  18             delete hstate.bodyHeight
  19         }
  20
  21         if (hstate.currentState) {
  22             vnode.attrs.currentState(hstate.currentState)
  23             delete hstate.currentState
  24         } else {
  25             vnode.attrs.currentState(vnode.attrs.defaultState)
  26         }
  27
  28         history.replaceState(hstate, '')
  29     },
  30     oncreate: function(vnode) {
  31         vnode.state.saveState = vnode.state.saveState.bind(vnode.state)
  32         window.addEventListener('beforeunload', vnode.state.saveState)
  33         vnode.state.onupdate(vnode)
  34     },
  35     onupdate: function(vnode) {
  36         if (vnode.attrs.saveBodyHeight && vnode.attrs.forgetSavedState) {
  37             document.body.style['min-height'] = null
  38         }
  39     },
  40     onremove: function(vnode) {
  41         window.removeEventListener('beforeunload', vnode.state.saveState)
  42     },
  43     view: function(vnode) {
  44         return null
  45     },
  46 }