scrollview_observer

What's Changed

• fix(ObserverController): correct the scrolling clamped by an outdated scrollExtent by @LinXunFeng in #151
• ci(assign-issue): grant issues write permission to GITHUB_TOKEN by @LinXunFeng in #152
• ci(workflows): pin actions to hashes and restrict token permissions by @LinXunFeng in #153

Full Changelog: 1.27.0...1.27.1

What's Changed

• ChatScrollObserver
  • Record sliverContext and support conditional shrink wrap observation in standby by @LinXunFeng.
• ObserverWidget
  • Add cancelOnceObserveNotificationBubbling to control notification bubbling by @LinXunFeng.

Full Changelog: 1.26.3...1.27.0

What's Changed

• ObserverWidget
  • Fix incorrect tag comparison in _checkTagChange by @LinXunFeng in #143.
• ObserverController
  • Add missing type annotations by @LinXunFeng.

Full Changelog: 1.26.2...1.26.3

What's Changed

• ObserverUtils
  • Refine the logic of calcAnchorTabIndex method by @LinXunFeng.

Full Changelog: 1.26.1...1.26.2

What's Changed

• ChatScrollObserver
  • Refine the logic of standby by @LinXunFeng.

Full Changelog: 1.26.0...1.26.1

What's Changed

• NestedScrollUtil
  • Add await support for animateTo and jumpTo methods by @LinXunFeng.

Full Changelog: 1.25.2...1.26.0

What's Changed

• ObserverWidget
  • Fix "ObserverWidgetState was used after being disposed" by @LinXunFeng in #120 and #123.

Full Changelog: 1.25.1...1.25.2

What's Changed

• ObserverWidget
  • Fix observation result inaccurate by @LinXunFeng in #113.

Full Changelog: 1.25.0...1.25.1

What's Changed

• ChatScrollObserver
  • Add customAdjustPosition.

Above features are implemented by @LinXunFeng.

Full Changelog: 1.24.0...1.25.0

What's Changed

• ObserveModel
  • Add displayingChildModelMap.
• ChatScrollObserver
  • Add customAdjustPositionDelta.

Above features are implemented by @LinXunFeng.

Full Changelog: 1.23.0...1.24.0

• ObserverWidget
  • Make ObserverWidget listenable.

• ObserverWidget
  • Add scrollNotificationPredicate.

• ObserverWidget
  • Fix web support by @Ahmadre in #91.

• ObserverCore
  • Improve the logic of handleListObserve and handleGridObserve.

• ObserverController
  • Add onPrepareScrollToIndex for jumpTo and animateTo.
• NestedScrollUtil
  • Add jumpTo and animateTo methods.

• ObserverController
  • Add observeIntervalForScrolling to set the minimum amount of time to wait for firing observe callback during scrolling.
• ObserverUtils
  • Improve the logic of isDisplayingSliverInViewport method.
• ScrollViewOnceObserveNotificationResult
  • Add observeViewportResultModel.
• ChatScrollObserver
  • Add ChatScrollObserverRefIndexType.
  • Add refIndexType to specify the role of refItemIndex and refItemIndex.
• Slivers
  • Add SliverObserveContext.
• ObserveDisplayingChildModelMixin
  • Add visibleFraction and visibleMainAxisSize.

• ListViewObserver
  • Support SliverVariedExtentList in 74.
• ChatScrollObserver
  • Safely obtain the constraints of RenderSliver.
• ObserverController
  • Adapt to scenes where CustomScrollView specifies center.

• SliverViewObserver
  • Add customOverlap property.
• NestedScrollUtil
  • To better support NestedScrollView.
• ObserverCore
  • Improve the judgment logic of whether the sliver is visible.
• ObserverController
  • Adjust the controller to be modifiable.

• ChatScrollObserver
  • Fix keeping position not working by @LinXunFeng in #64

• Add a check to determine whether the BuildContext is mounted by @LinXunFeng in #62

• ObserverController
  • Add some scrolling task notifications extending from ObserverScrollNotification.
  • The jumpTo method and animateTo method support await.
  • Add isForbidObserveCallback property.
  • Add isForbidObserveViewportCallback property.

• ObserverController
  • The parameter isFixedHeight in the jumpTo method and animateTo method supports GridView and supports ScrollView built by third-party package by @percival888 in #52.

• ObserverWidget
  • Improve the processing logic of scroll notification when scrolling with the mouse wheel is not smooth by @qiangjindong in #48.
• ChatScrollObserver
  • Update isShrinkWrap once during initialization by @LinXunFeng. #47
• ObserverController
  • Fix unable to jump when sliver is too far away and has no any child by @LinXunFeng. #45
  • Fix continuous page turning due to incorrect index by @LinXunFeng.

• Supplement missing type conversion adjustments.

• Observation Model
  • Add viewport property to observation model.
  • Correct the calculation logic of some values to adapt to the scene of multiple slivers.

• ObserverWidget
  • Adjust the conversion type of viewport.offset to ScrollPosition by @LiuDongCai in #41.
• ObserveDisplayingChildModelMixin
  • Adapt displayPercentage to scenes with SliverPersistentHeader by @percival888 in #43.
  • Refine the logic of calculateDisplayPercentage method by @LinXunFeng.

• Compatible with flutter 3.13.0

• ObserverController
  • dispatchOnceObserve method supports directly getting observation result.

• Slivers
  • Add SliverObserveContextToBoxAdapter.

• ObserverWidget
  • Safe to use context. #35.

• ChatScrollObserver
  • Improve the logic of the conversion type.

• ChatScrollObserver
  • Support for keeping position of generative messages (eg: ChatGPT)

• ObserverWidget
  • Fix getting bad observation result on web. Thanks to @rmasarovic for the test in #31

• ObserverCore
  • Fix no getting all child widgets those are displayed when there are separators in ListView. #31
• ObserverUtils
  • Safely call findRenderObject method.

• ObserverUtils
  • The calcAnchorTabIndex method supports GridView.
• ObserverCore
  • Refine the logic of handleListObserve method and handleGridObserve method.

• ObserverWidget
  • Support custom observation object and observation logic.
  • Refine the logic for finding the first sliver in viewport.

• ChatScrollObserver
  • Support inserting multiple messages at once.
• ObserverWidget
  • GridViewObserver is compatible with waterfall flow.
  • SliverViewObserver supports observation of viewport.

• ObserverController
  • fix: targetOffset calculate may be negative by @zeqinjie in #21.

• ObserverController
  • Improve [_calculateTargetLayoutOffset] logic.
  • The jumpTo method and animateTo method both add a parameter [padding].
• ObserverIndexPositionModel
  • Add property [padding].

• ObserverWidget
  • Catch the exception thrown by getting size.

• ObserverController
  • Modify offset calculation logic in method [_calculateTargetLayoutOffset].

• ObserverWidget
  • Add property [autoTriggerObserveTypes] and property [triggerOnObserveType].
• ObserverController
  • Method [dispatchOnceObserve] adds parameter [isForce].

• Scrolling to the specified index location
  • Supports initializing the index position of the scrollView.
  • Deprecated [clearIndexOffsetCache], please use [clearScrollIndexCache] instead.

• ChatScrollObserver
  • Add the property [fixedPositionOffset].
  • Deprecated [ChatObserverClampinScrollPhysics], please use [ChatObserverClampingScrollPhysics] instead.

• Fix lib not working when itemExtent is set in ListView.

• Fix lib not working when shrinkWrap is true in scrollView.

• ChatScrollObserver
  • Add onHandlePositionCallback.

• Fix scrollView being stuck when child widget get [size].

• ChatScrollObserver
  • Quickly implement the chat session page effect.
• Scrolling to the specified index location
  • Add the property [cacheJumpIndexOffset].

• Scrolling to the specified index location
  • New alignment parameter in the jumpTo and animateTo methods.
  • Fixed a bug that caused scrolling to the first child to jitter when using offset parameter.

• Scrolling to the specified index location supports the SliverPersistentHeader.
• Add ObserverUtils
  • Method calcPersistentHeaderExtent: Calculate current extent of RenderSliverPersistentHeader.
  • Method calcAnchorTabIndex: Calculate the anchor tab index.

• The jumpTo and animateTo methods add an isFixedHeight parameter to optimize performance when the child widget is of fixed height
• Add the properties [leadingMarginToViewport] and [trailingMarginToViewport]
• Support mixing usage of SliverList and SliverGrid

• Supports scrolling to the specified index location

• Delete useless code

• Implements a way to use without sliver [BuildContext]
• Change [onObserve] to [onObserveAll], and add a new [onObserve] callback to listen for changes in the child widget display of the first sliver
• Add [ObserverController]

• Support GridView
• Support the horizontal

• Initial release