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working on scroll offset...

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Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
This commit is contained in:
Alex A. Naanou 2019-07-19 14:53:26 +03:00
parent c9de5e4b72
commit cffc892aff
1 changed files with 30 additions and 7 deletions
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37
ui (gen4)/lib/widget/browse2.js
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@ -3693,9 +3693,11 @@ var BaseBrowserPrototype = {
full full
&& this.make(opts) && this.make(opts)
var context = {}
this this
.preRender() // XXX this needs access to render context....
.render(opts) .preRender(opts, (opts || {}).renderer, context)
.render(opts, (opts || {}).renderer, context)
this.trigger(...args) }.bind(this) this.trigger(...args) }.bind(this)
var _update_n_delay = function(){ var _update_n_delay = function(){
// call... // call...
@ -4327,13 +4329,17 @@ var HTMLBrowserPrototype = {
// page-relative items... // page-relative items...
get pagetop(){ get pagetop(){
return this.get('pagetop') }, return this.dom
&& this.get('pagetop') },
set pagetop(item){ set pagetop(item){
this.scrollTo(item, 'start') }, this.dom
&& this.scrollTo(item, 'start') },
get pagebottom(){ get pagebottom(){
return this.get('pagebottom') }, return this.dom
&& this.get('pagebottom') },
set pagebottom(item){ set pagebottom(item){
this.scrollTo(item, 'end') }, this.dom
&& this.scrollTo(item, 'end') },
// Extending query... // Extending query...
@ -4493,6 +4499,7 @@ var HTMLBrowserPrototype = {
// </div> // </div>
// or same as .renderList(..) // or same as .renderList(..)
// //
// XXX set scroll offset...
renderFinalize: function(header, items, footer, context){ renderFinalize: function(header, items, footer, context){
var that = this var that = this
var d = this.renderList(header, items, footer, context) var d = this.renderList(header, items, footer, context)
@ -4528,9 +4535,16 @@ var HTMLBrowserPrototype = {
&& that.focused.elem.focus() }) && that.focused.elem.focus() })
//*/ //*/
// XXX get the scroll offset...
// XXX
console.log('SCROLL OFFSET:', context.scroll_offset)
// XXX should this be done here or in .render(..)??? // XXX should this be done here or in .render(..)???
this.dom = d this.dom = d
// set the scroll offset...
// XXX
// keep focus where it is... // keep focus where it is...
var focused = this.focused var focused = this.focused
focused focused
@ -5011,8 +5025,17 @@ var HTMLBrowserPrototype = {
// NOTE: this will also kill any user-set keys for disabled/hidden items... // NOTE: this will also kill any user-set keys for disabled/hidden items...
// //
// XXX also handle global button keys... // XXX also handle global button keys...
__preRender__: function(){ __preRender__: function(evt, options, renderer, context){
var that = this var that = this
// prepare for maintaining the scroll position...
var ref = context.scroll_reference = this.focused || this.pagetop
context.scroll_offset =
context.scroll_offset
|| (ref && ref.dom && ref.dom.offsetTop) ?
ref.dom.offsetTop - ref.dom.offsetParent.scrollTop
: null
// reset item shortcuts... // reset item shortcuts...
var shortcuts = var shortcuts =
this.keybindings.ItemShortcuts = this.keybindings.ItemShortcuts =