API Reference › core-frontend› Tools › ViewUndoTool

ViewUndoTool Class

A tool that performs view undo operation. An application could also just call Viewport.doUndo directly, creating a ViewTool isn't required.

Extends

Methods

Name Description
constructor(viewport?: ScreenViewport): ViewUndoTool    
onPostInstall(): Promise<void> Override to execute additional logic after tool becomes active  

Inherited methods

Name Inherited from Description
applyToolSettingPropertyChange(_updatedValue: DialogPropertySyncItem): Promise<boolean> ViewTool Used to receive property changes from UI.
beginDynamicUpdate(): void ViewTool  
beginDynamics(): void ViewTool Call to initialize dynamics mode.
bumpToolSetting(_settingIndex?: number): Promise<boolean> ViewTool Used to "bump" the value of a tool setting.
changeLocateState(enableLocate: boolean, enableSnap?: boolean, cursor?: string, coordLockOvr?: CoordinateLockOverrides): void ViewTool Helper method to keep the view cursor, display of locate circle, and coordinate lock overrides consistent with isLocateEnabled and isSnapEnabled.
changeToolSettingPropertyValue(syncItem: DialogPropertySyncItem): boolean ViewTool Helper method for responding to a tool setting property value change by updating saved settings.
decorate(_context: DecorateContext): void ViewTool Called to allow an active tool to display non-element decorations in overlay mode.
decorateSuspended(_context: DecorateContext): void ViewTool Called to allow a suspended tool to display non-element decorations in overlay mode.
endDynamicUpdate(): void ViewTool  
endDynamics(): void ViewTool Call to terminate dynamics mode.
exitTool(): Promise<void> ViewTool Do not override.
filterHit(_hit: HitDetail, _out?: LocateResponse): Promise<LocateFilterStatus> ViewTool Invoked to allow tools to filter which elements can be located.
getCurrentButtonEvent(ev: BeButtonEvent): void ViewTool Fill the supplied button event from the current cursor location.
getDecorationGeometry(_hit: HitDetail): undefined | GeometryStreamProps ViewTool Called to allow snapping to pickable decoration geometry.
getToolSettingPropertyLocked(_property: DialogProperty<any>): undefined | DialogProperty<any> ViewTool Override to return the property that is disabled/enabled if the supplied property is a lock property.
getToolTip(_hit: HitDetail): Promise<string | HTMLElement> ViewTool Invoked before the locate tooltip is displayed to retrieve the information about the located element.
initLocateElements(enableLocate: booleantrue, enableSnap?: boolean, cursor?: string, coordLockOvr?: CoordinateLockOverrides): void ViewTool Helper method for tools that need to locate existing elements.
initializeToolSettingPropertyValues(properties: DialogProperty<any>[]): void ViewTool Helper method to establish initial values for tool setting properties from saved settings.
isCompatibleViewport(_vp: ScreenViewport, _isSelectedViewChange: boolean): boolean ViewTool  
isValidLocation(_ev: BeButtonEvent, _isButtonEvent: boolean): boolean ViewTool  
onCleanup(): Promise<void> ViewTool Invoked when the tool becomes no longer active, to perform additional cleanup logic
onDataButtonDown(_ev: BeButtonEvent): Promise<EventHandled> ViewTool Invoked when the data button is pressed.
onDataButtonUp(_ev: BeButtonEvent): Promise<EventHandled> ViewTool Invoked when the data button is released.
onDynamicFrame(_ev: BeButtonEvent, _context: DynamicsContext): void ViewTool Called to allow Tool to display dynamic elements.
onInstall(): Promise<boolean> ViewTool Override to execute additional logic when tool is installed.
onKeyTransition(_wentDown: boolean, _keyEvent: KeyboardEvent): Promise<EventHandled> ViewTool Called when any key is pressed or released.
onMiddleButtonDown(_ev: BeButtonEvent): Promise<EventHandled> ViewTool Invoked when the middle mouse button is pressed.
onMiddleButtonUp(_ev: BeButtonEvent): Promise<EventHandled> ViewTool Invoked when the middle mouse button is released.
onModifierKeyTransition(_wentDown: boolean, _modifier: BeModifierKeys, _event: KeyboardEvent): Promise<EventHandled> ViewTool Called when Control, Shift, or Alt modifier keys are pressed or released.
onMouseEndDrag(ev: BeButtonEvent): Promise<EventHandled> ViewTool Invoked when the button is released after onMouseStartDrag.
onMouseMotion(_ev: BeButtonEvent): Promise<void> ViewTool Invoked when the cursor is moving
onMouseStartDrag(_ev: BeButtonEvent): Promise<EventHandled> ViewTool Invoked when the cursor begins moving while a button is depressed.
onMouseWheel(_ev: BeWheelEvent): Promise<EventHandled> ViewTool Invoked when the mouse wheel moves.
onReinitialize(): Promise<void> ViewTool Override Call to reset tool to initial state
onResetButtonDown(_ev: BeButtonEvent): Promise<EventHandled> ViewTool Invoked when the reset button is pressed.
onResetButtonUp(_ev: BeButtonEvent): Promise<EventHandled> ViewTool Invoked when the reset button is released.
onSelectedViewportChanged(_previous: ScreenViewport, _current: ScreenViewport): void ViewTool Called when active view changes.
onSuspend(): Promise<void> ViewTool Notification of a ViewTool or InputCollector starting and this tool is being suspended.
onTouchCancel(_ev: BeTouchEvent): Promise<void> ViewTool Called when a touch point is interrupted in some way and needs to be dropped from the list of target touches.
onTouchComplete(_ev: BeTouchEvent): Promise<void> ViewTool Called when the last touch point is removed from the surface completing the current gesture.
onTouchEnd(_ev: BeTouchEvent): Promise<void> ViewTool Called when user removes a touch point by lifting a finger or stylus from the surface.
onTouchMove(_ev: BeTouchEvent): Promise<void> ViewTool Called when a touch point moves along the surface.
onTouchMoveStart(_ev: BeTouchEvent, _startEv: BeTouchEvent): Promise<EventHandled> ViewTool Called after at least one touch point has moved for an appreciable time and distance along the surface to not be considered a tap.
onTouchStart(_ev: BeTouchEvent): Promise<void> ViewTool Called when user adds a touch point by placing a finger or stylus on the surface.
onTouchTap(_ev: BeTouchEvent): Promise<EventHandled> ViewTool Called when touch point(s) are added and removed from a surface within a small time window without any touch point moving.
onUnsuspend(): Promise<void> ViewTool Notification of a ViewTool or InputCollector exiting and this tool is being unsuspended.
parseAndRun(..._args: string[]): Promise<boolean> ViewTool Run this instance of a tool using a series of string arguments.
reloadToolSettingsProperties(): void ViewTool Called by tool to inform UI to reload ToolSettings with new set of properties.
run(..._args: any[]): Promise<boolean> ViewTool Run this instance of a Tool.
supplyToolSettingsProperties(): undefined | DialogItem[] ViewTool Used to supply list of properties that can be used to generate ToolSettings.
syncToolSettingsProperties(syncData: DialogPropertySyncItem[]): void ViewTool Called by tool to synchronize the UI with property changes made by tool.
testDecorationHit(_id: string): boolean ViewTool Called to support operations on pickable decorations, like snapping.
register(namespace?: string): void Static ViewTool Register this Tool class with the ToolRegistry.
showPrompt(prompt: string): void Static ViewTool  
translate(val: string): string Static ViewTool  

Properties

Name Type Description
iconSpec Static string The icon for this Tool.  
toolId Static string The unique string that identifies this tool.  

Inherited properties

Name Type Inherited from Description
description Accessor ReadOnly string ViewTool Get the localized description string from this Tool's class
description Accessor Static ReadOnly string ViewTool Get the localized description for this Tool class. This returns the value of "tools." + this.toolId + ".description" from
its registered Namespace (e.g. "en/MyApp.json"). If that key is not in the localization namespace,
flyover is returned.
englishKeyin Accessor Static ReadOnly string ViewTool Get the English keyin string for this Tool class. This returns the value of "tools." + this.toolId + ".keyin" from
its registered Namespace (e.g. "en/MyApp.json").
flyover Accessor ReadOnly string ViewTool Get the localized flyover string from this Tool's class
flyover Accessor Static ReadOnly string ViewTool Get the localized flyover for this Tool class. This returns the value of "tools." + this.toolId + ".flyover" from
its registered Namespace (e.g. "en/MyApp.json"). If that key is not in the localization namespace,
keyin is returned.
hidden Static boolean ViewTool If true, this Tool will not appear in the list from getToolList.
iconSpec Accessor ReadOnly string ViewTool Get the iconSpec from this Tool's class.
inDynamicUpdate boolean ViewTool  
isControlDown Accessor ReadOnly boolean ViewTool Convenience method to check whether control key is currently down without needing a button event.
isDynamicsStarted Accessor ReadOnly boolean ViewTool Call to find out if dynamics are currently active.
keyin Accessor ReadOnly string ViewTool Get the localized keyin string from this Tool's class
keyin Accessor Static ReadOnly string ViewTool Get the localized keyin string for this Tool class. This returns the value of "tools." + this.toolId + ".keyin" from
its registered Namespace (e.g. "en/MyApp.json").
maxArgs Accessor Static ReadOnly undefined | number ViewTool The maximum number of arguments allowed by parseAndRun, or undefined if there is no maximum.
If subclasses override parseAndRun, they should also override this method to indicate the maximum
number of arguments their implementation expects.
minArgs Accessor Static ReadOnly number ViewTool The minimum number of arguments allowed by parseAndRun. If subclasses override parseAndRun, they should also
override this method to indicate the minimum number of arguments their implementation expects. UI controls can use
this information to ensure the tool has enough information to execute.
namespace Static string ViewTool The namespace that provides localized strings for this Tool.
receivedDownEvent boolean ViewTool Used to avoid sending tools up events for which they did not receive the down event.
toolId Accessor ReadOnly string ViewTool Get the toolId string for this Tool class. This string is used to identify the Tool in the ToolRegistry and is used to localize
the keyin, description, etc. from the current locale.
viewport ScreenViewport | undefined ViewTool  

Defined in

Last Updated: 28 October, 2024