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Janne Mareike Koschinski
QuasselDroid-ng
Commits
dca90fd1
Verified
Commit
dca90fd1
authored
7 years ago
by
Janne Mareike Koschinski
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Always keep scroll state
parent
11840d2d
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app/src/main/java/de/kuschku/quasseldroid/ui/chat/messages/MessageListFragment.kt
+42
-28
42 additions, 28 deletions
...chku/quasseldroid/ui/chat/messages/MessageListFragment.kt
with
42 additions
and
28 deletions
app/src/main/java/de/kuschku/quasseldroid/ui/chat/messages/MessageListFragment.kt
+
42
−
28
View file @
dca90fd1
...
...
@@ -48,6 +48,7 @@ import de.kuschku.libquassel.quassel.syncables.BufferSyncer
import
de.kuschku.libquassel.session.SessionManager
import
de.kuschku.libquassel.util.flag.hasFlag
import
de.kuschku.libquassel.util.helpers.mapSwitchMap
import
de.kuschku.libquassel.util.helpers.nullIf
import
de.kuschku.libquassel.util.helpers.value
import
de.kuschku.libquassel.util.irc.HostmaskHelper
import
de.kuschku.quasseldroid.GlideApp
...
...
@@ -110,6 +111,7 @@ class MessageListFragment : ServiceBoundFragment() {
private
var
lastBuffer
:
BufferId
?
=
null
private
var
previousMessageId
:
MsgId
?
=
null
private
var
previousLoadKey
:
Int
?
=
null
private
var
actionMode
:
ActionMode
?
=
null
...
...
@@ -318,7 +320,6 @@ class MessageListFragment : ServiceBoundFragment() {
}
}
var
previousLoadKey
:
Int
?
=
null
val
data
=
combineLatest
(
viewModel
.
buffer
,
viewModel
.
selectedMessages
,
viewModel
.
expandedMessages
,
...
...
@@ -387,10 +388,18 @@ class MessageListFragment : ServiceBoundFragment() {
}
})
var
hasLoaded
=
false
fun
checkScroll
()
{
if
(
hasLoaded
)
{
if
(
linearLayoutManager
.
findFirstVisibleItemPosition
()
<
2
&&
!
isScrolling
)
{
messageList
.
scrollToPosition
(
0
)
}
}
else
{
savedInstanceState
?.
apply
{
messageList
.
layoutManager
.
onRestoreInstanceState
(
getParcelable
(
KEY_STATE_LIST
))
}
hasLoaded
=
true
}
}
adapter
.
registerAdapterDataObserver
(
object
:
RecyclerView
.
AdapterDataObserver
()
{
...
...
@@ -398,27 +407,6 @@ class MessageListFragment : ServiceBoundFragment() {
override
fun
onItemRangeInserted
(
positionStart
:
Int
,
itemCount
:
Int
)
=
checkScroll
()
})
var
lastBuffer
=
-
1
data
.
observe
(
this
,
Observer
{
list
->
previousLoadKey
=
list
?.
lastKey
as
?
Int
val
firstVisibleItemPosition
=
linearLayoutManager
.
findFirstVisibleItemPosition
()
val
firstVisibleMessageId
=
adapter
[
firstVisibleItemPosition
]
?.
content
?.
messageId
runInBackground
{
activity
?.
runOnUiThread
{
list
?.
let
(
adapter
::
submitList
)
}
val
buffer
=
viewModel
.
buffer
.
value
?:
-
1
if
(
buffer
!=
lastBuffer
)
{
adapter
.
clearCache
()
viewModel
.
session
.
value
?.
orNull
()
?.
bufferSyncer
?.
let
{
bufferSyncer
->
onBufferChange
(
lastBuffer
,
buffer
,
firstVisibleMessageId
,
bufferSyncer
)
}
lastBuffer
=
buffer
}
}
})
scrollDown
.
hide
(
object
:
FloatingActionButton
.
OnVisibilityChangedListener
()
{
override
fun
onHidden
(
fab
:
FloatingActionButton
)
{
fab
.
visibility
=
View
.
VISIBLE
...
...
@@ -426,10 +414,6 @@ class MessageListFragment : ServiceBoundFragment() {
})
scrollDown
.
setOnClickListener
{
messageList
.
scrollToPosition
(
0
)
}
savedInstanceState
?.
run
{
messageList
.
layoutManager
.
onRestoreInstanceState
(
getParcelable
(
KEY_STATE_LIST
))
}
val
avatarSize
=
TypedValue
.
applyDimension
(
TypedValue
.
COMPLEX_UNIT_SP
,
messageSettings
.
textSize
*
2.5f
,
...
...
@@ -454,12 +438,40 @@ class MessageListFragment : ServiceBoundFragment() {
adapter
,
requireContext
(),
R
.
dimen
.
markerline_height
,
R
.
attr
.
colorMarkerLine
))
savedInstanceState
?.
run
{
messageList
.
layoutManager
.
onRestoreInstanceState
(
getParcelable
(
KEY_STATE_LIST
))
previousLoadKey
=
getInt
(
KEY_STATE_PAGING
).
nullIf
{
it
==
-
1
}
lastBuffer
=
getInt
(
KEY_STATE_BUFFER
).
nullIf
{
it
==
-
1
}
}
data
.
observe
(
this
,
Observer
{
list
->
previousLoadKey
=
list
?.
lastKey
as
?
Int
val
firstVisibleItemPosition
=
linearLayoutManager
.
findFirstVisibleItemPosition
()
val
firstVisibleMessageId
=
adapter
[
firstVisibleItemPosition
]
?.
content
?.
messageId
runInBackground
{
activity
?.
runOnUiThread
{
list
?.
let
(
adapter
::
submitList
)
}
val
buffer
=
viewModel
.
buffer
.
value
?:
-
1
if
(
buffer
!=
lastBuffer
)
{
adapter
.
clearCache
()
viewModel
.
session
.
value
?.
orNull
()
?.
bufferSyncer
?.
let
{
bufferSyncer
->
onBufferChange
(
lastBuffer
,
buffer
,
firstVisibleMessageId
,
bufferSyncer
)
}
lastBuffer
=
buffer
}
}
})
return
view
}
override
fun
onSaveInstanceState
(
outState
:
Bundle
)
{
super
.
onSaveInstanceState
(
outState
)
outState
.
putParcelable
(
KEY_STATE_LIST
,
messageList
.
layoutManager
.
onSaveInstanceState
())
outState
.
putInt
(
KEY_STATE_PAGING
,
previousLoadKey
?:
-
1
)
outState
.
putInt
(
KEY_STATE_BUFFER
,
lastBuffer
?:
-
1
)
}
private
fun
markAsRead
(
bufferSyncer
:
BufferSyncer
,
buffer
:
BufferId
,
lastMessageId
:
MsgId
?)
{
...
...
@@ -528,5 +540,7 @@ class MessageListFragment : ServiceBoundFragment() {
companion
object
{
private
const
val
KEY_STATE_LIST
=
"KEY_STATE_LIST"
private
const
val
KEY_STATE_PAGING
=
"KEY_STATE_PAGING"
private
const
val
KEY_STATE_BUFFER
=
"KEY_STATE_BUFFER"
}
}
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