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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,142 @@ | ||
| part of panels; | ||
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| class PanelController extends ChangeNotifier { | ||
| SlidingUpPanelState? _panelState; | ||
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| void _addState(SlidingUpPanelState panelState) { | ||
| _panelState = panelState; | ||
| notifyListeners(); | ||
| } | ||
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| bool _forceScrollChange = false; | ||
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| /// use this function when scroll change in func | ||
| /// Example: | ||
| /// panelController.forseScrollChange(scrollController.animateTo(100, duration: Duration(milliseconds: 400), curve: Curves.ease)) | ||
| Future<void> forceScrollChange(Future func) async { | ||
| _forceScrollChange = true; | ||
| _panelState!._scrollingEnabled = true; | ||
| await func; | ||
| // if (_panelState!._sc.offset == 0) { | ||
| // _panelState!._scrollingEnabled = true; | ||
| // } | ||
| if (panelPosition < 1) { | ||
| _panelState!._scMinOffset = _panelState!._scrollController.offset; | ||
| } | ||
| _forceScrollChange = false; | ||
| } | ||
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| bool __nowTargetForceDraggable = false; | ||
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| bool get _nowTargetForceDraggable => __nowTargetForceDraggable; | ||
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| set _nowTargetForceDraggable(bool value) { | ||
| __nowTargetForceDraggable = value; | ||
| notifyListeners(); | ||
| } | ||
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| /// Determine if the panelController is attached to an instance | ||
| /// of the SlidingUpPanel (this property must return true before any other | ||
| /// functions can be used) | ||
| bool get isAttached => _panelState != null; | ||
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| /// Closes the sliding panel to its collapsed state (i.e. to the minHeight) | ||
| Future<void> close() { | ||
| assert(isAttached, "PanelController must be attached to a SlidingUpPanel"); | ||
| return _panelState!._close(); | ||
| } | ||
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| /// Opens the sliding panel fully | ||
| /// (i.e. to the maxHeight) | ||
| Future<void> open() { | ||
| assert(isAttached, "PanelController must be attached to a SlidingUpPanel"); | ||
| return _panelState!._open(); | ||
| } | ||
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| /// Hides the sliding panel (i.e. is invisible) | ||
| Future<void> hide() { | ||
| assert(isAttached, "PanelController must be attached to a SlidingUpPanel"); | ||
| return _panelState!._hide(); | ||
| } | ||
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| /// Shows the sliding panel in its collapsed state | ||
| /// (i.e. "un-hide" the sliding panel) | ||
| Future<void> show() { | ||
| assert(isAttached, "PanelController must be attached to a SlidingUpPanel"); | ||
| return _panelState!._show(); | ||
| } | ||
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| /// Animates the panel position to the value. | ||
| /// The value must between 0.0 and 1.0 | ||
| /// where 0.0 is fully collapsed and 1.0 is completely open. | ||
| /// (optional) duration specifies the time for the animation to complete | ||
| /// (optional) curve specifies the easing behavior of the animation. | ||
| Future<void> animatePanelToPosition(double value, | ||
| {Duration? duration, Curve curve = Curves.linear}) { | ||
| assert(isAttached, "PanelController must be attached to a SlidingUpPanel"); | ||
| assert(0.0 <= value && value <= 1.0); | ||
| return _panelState! | ||
| ._animatePanelToPosition(value, duration: duration, curve: curve); | ||
| } | ||
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| /// Animates the panel position to the snap point | ||
| /// Requires that the SlidingUpPanel snapPoint property is not null | ||
| /// (optional) duration specifies the time for the animation to complete | ||
| /// (optional) curve specifies the easing behavior of the animation. | ||
| Future<void> animatePanelToSnapPoint( | ||
| {Duration? duration, Curve curve = Curves.linear}) { | ||
| assert(isAttached, "PanelController must be attached to a SlidingUpPanel"); | ||
| assert(_panelState!.widget.snapPoint != null, | ||
| "SlidingUpPanel snapPoint property must not be null"); | ||
| return _panelState! | ||
| ._animatePanelToSnapPoint(duration: duration, curve: curve); | ||
| } | ||
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| /// Sets the panel position (without animation). | ||
| /// The value must between 0.0 and 1.0 | ||
| /// where 0.0 is fully collapsed and 1.0 is completely open. | ||
| set panelPosition(double value) { | ||
| assert(isAttached, "PanelController must be attached to a SlidingUpPanel"); | ||
| assert(0.0 <= value && value <= 1.0); | ||
| _panelState!._panelPosition = value; | ||
| } | ||
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| /// Gets the current panel position. | ||
| /// Returns the % offset from collapsed state | ||
| /// to the open state | ||
| /// as a decimal between 0.0 and 1.0 | ||
| /// where 0.0 is fully collapsed and | ||
| /// 1.0 is full open. | ||
| double get panelPosition { | ||
| assert(isAttached, "PanelController must be attached to a SlidingUpPanel"); | ||
| return _panelState!._panelPosition; | ||
| } | ||
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| /// Returns whether or not the panel is | ||
| /// currently animating. | ||
| bool get isPanelAnimating { | ||
| assert(isAttached, "PanelController must be attached to a SlidingUpPanel"); | ||
| return _panelState!._isPanelAnimating; | ||
| } | ||
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| /// Returns whether or not the | ||
| /// panel is open. | ||
| bool get isPanelOpen { | ||
| assert(isAttached, "PanelController must be attached to a SlidingUpPanel"); | ||
| return _panelState!._isPanelOpen; | ||
| } | ||
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| /// Returns whether or not the | ||
| /// panel is closed. | ||
| bool get isPanelClosed { | ||
| assert(isAttached, "PanelController must be attached to a SlidingUpPanel"); | ||
| return _panelState!._isPanelClosed; | ||
| } | ||
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| /// Returns whether or not the | ||
| /// panel is shown/hidden. | ||
| bool get isPanelShown { | ||
| assert(isAttached, "PanelController must be attached to a SlidingUpPanel"); | ||
| return _panelState!._isPanelShown; | ||
| } | ||
| } |
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