iOS & macOS Charting Documentation - SciChart iOS & macOS Charts SDK v4.x

SCIUpdateSuspender

@interface SCIUpdateSuspender : SCIDisposableBase <ISCIUpdateSuspender>

A disposable class which allows nested suspend/resume operations on an ISCISuspendable target.

-initWithTarget:
Initializes a new instance of the SCIUpdateSuspender class.
Declaration
Objective-C

- (nonnull instancetype)initWithTarget:(nonnull id<ISCISuspendable>)target;
Swift

init(target: ISCISuspendable)
Parameters

target

The target instance.
+isTargetSuspended:
Gets a value indicating whether updates for this instance are currently suspended.
Declaration
Objective-C

+ (BOOL)isTargetSuspended:(nonnull id<ISCISuspendable>)target;
Swift

class func isTargetSuspended(_ target: ISCISuspendable) -> Bool
Parameters

target

Target to check.

Return Value

YES if target’s updates are suspended.
+usingWithSuspendable:withBlock:
Helper method which suspend updates on target instance while runnable is executing.
Declaration
Objective-C

+ (void)usingWithSuspendable:(nonnull id<ISCISuspendable>)suspendable withBlock:(nonnull SCIAction)block;
Swift

class func usingWith(_ suspendable: ISCISuspendable, with block: @escaping SCIAction)
Parameters

suspendable

The ISCISuspendable which need to suspend before running runnable.

block

The SCIAction to run code of changing state of target is suspended.
+suspendedInstances
Gets a value indicating whether updates for this instance are currently suspended.
Declaration
Objective-C

+ (nonnull NSMapTable<id<ISCISuspendable>, NSNumber *> *)suspendedInstances;
Swift

class func suspendedInstances() -> NSMapTable<ISCISuspendable, NSNumber>
Return Value

List of suspended instances.