Widget handlers

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This is a list of scripts handlers that can be set on each widget type, along with the arguments that are passed.

ScriptObject

This is the base object for all objects with script handlers.

OnLoad(self) - Run when the frame is created.
OnUpdate(self, elapsed) - Run each time the screen is drawn by the game engine.

AnimationGroup

AnimationGroup has the handlers from ScriptObject, plus the following:

OnFinished(self, requested) - Run when the animation (or animation group) finishes animating.
OnLoop(self, loopState) - Run when the animation group's loop state changes.
OnPause(self) - Run when the animation (or animation group) is paused.
OnPlay(self) - Run when the animation (or animation group) begins to play.
OnStop(self, requested) - Run when the animation (or animation group) is stopped.

Animation

Animation has the handlers from ScriptObject, plus the following:

OnFinished(self, requested)
OnPause(self)
OnPlay(self)
OnStop(self, requested)

Inherits

The following objects inherit the handlers from Animation:

  • Alpha
  • Scale
  • LineScale
  • Translation
  • LineTranslation
  • Path
  • Rotation
  • TextureCoordTranslation

Frame

Frame has the handlers from ScriptObject, plus the following:

OnAttributeChanged(self, key, value) - Run when a frame attribute is changed.
OnChar(self, text) - Run for each text character typed in the frame.
OnDisable(self) - Run when the frame is disabled.
OnDragStart(self, button) - Run when the mouse is dragged starting in the frame.
OnDragStop(self) - Run when the mouse button is released after a drag started in the frame,
OnEnable(self) - Run when the frame is enabled.
OnEnter(self, motion) - Run when the mouse cursor enters the frame's interactive area.
OnEvent(self, event, ...) - Run whenever an event fires for which the frame is registered.
OnHide(self) - Run when the frame's visbility changes to hidden.
OnHyperlinkClick(self, link, text, button) - Run when the mouse clicks a hyperlink on the FontInstance object.
OnHyperlinkEnter(self, link, text) - Run when the mouse moves over a hyperlink on the FontInstance object.
OnHyperlinkLeave(self, link, text) - Run when the mouse moves away from a hyperlink on the FontInstance object.
OnKeyDown(self, key) - Run when a keyboard key is pressed if the frame is keyboard enabled.
OnKeyUp(self, key) - Run when a keyboard key is released if the frame is keyboard enabled.
OnLeave(self, motion) - Run when the mouse cursor leaves the frame's interactive area.
OnMouseDown(self, button) - Run when a mouse button is pressed while the cursor is over the frame.
OnMouseUp(self, button) - Run when the mouse button is released following a mouse down action in the frame.
OnMouseWheel(self, delta) - Run when the frame receives a mouse wheel scrolling action.
OnReceiveDrag(self) - Run when the mouse button is released after dragging into the frame.
OnShow(self) - Run when the frame becomes visible.
OnSizeChanged(self, width, height) - Run when a frame's size changes.

Inherits

The following objects inherit the handlers from Frame:

  • ArchaeologyDigSiteFrame
  • MessageFrame
  • Minimap
  • OffScreenFrame
  • QuestPOIFrame
  • ScenarioPOIFrame
  • ScrollingMessageFrame
  • SimpleHTML
  • UnitPositionFrame
  • WorldFrame

The following objects have the handlers from Frame, plus the following:

Browser

OnButtonUpdate(self, action)
OnEditFocusGained(self)
OnEditFocusLost(self)
OnError(self, msg)
OnEscapePressed(self)
OnExternalLink(self, url)

Button

CheckButton / ItemButton inherit the handlers from Button.

OnClick(self, button, down) - Run when the button is clicked.
OnDoubleClick(self, button) - Run when the button is double-clicked.
PostClick(self, button, down) - Run immediately following the button's `OnClick` handler with the same arguments.
PreClick(self, button, down) - Run immediately before the button's `OnClick` handler with the same arguments.

Checkout

OnButtonUpdate(self, action)
OnEditFocusGained(self)
OnEditFocusLost(self)
OnError(self, msg)
OnEscapePressed(self)
OnExternalLink(self, url)
OnRequestNewSize(self, width, height)

ColorSelect

OnColorSelect(self, r, g, b) - Run when the color select frame's color selection changes.

Cooldown

OnCooldownDone(self)

EditBox

OnArrowPressed(self, key)
OnCharComposition - Run when the edit box's input composition mode changes.
OnCursorChanged(self, x, y, width, height) - Run when the position of the text insertion cursor in the edit box changes.
OnEditFocusGained(self) - Run when the edit box becomes focused for keyboard input.
OnEditFocusLost(self) - Run when the edit box loses keyboard input focus.
OnEnterPressed(self) - Run when the Enter (or Return) key is pressed while the edit box has keyboard focus.
OnEscapePressed(self) - Run when the Escape key is pressed while the edit box has keyboard focus.
OnInputLanguageChanged(self, language) - Run when the edit box's language input mode changes.
OnSpacePressed(self) - Run when the space bar is pressed while the edit box has keyboard focus.
OnTabPressed(self) - Run when the Tab key is pressed while the edit box has keyboard focus.
OnTextChanged(self, isUserInput) - Run when the edit box's text is changed.
OnTextSet(self) - Run when the edit box's text is set programmatically.

FogOfWarFrame

OnUiMapChanged(self, uiMapID)

GameTooltip

OnTooltipAddMoney(self, cost, maxcost) - Run when an amount of money should be added to the tooltip.
OnTooltipCleared(self) - Run when the tooltip is hidden or its content is cleared.
OnTooltipSetAchievement - Run when the tooltip is filled with information about an achievement.
OnTooltipSetDefaultAnchor(self) - Run when the tooltip is repositioned to its default anchor location.
OnTooltipSetEquipmentSet - Run when the tooltip is filled with information about an equipment set.
OnTooltipSetFramestack(self, highlightFrame) - Run when the tooltip is filled with a list of frames under the mouse cursor.
OnTooltipSetItem(self) - Run when the tooltip is filled with information about an item.
OnTooltipSetQuest - Run when the tooltip is filled with information about a quest.
OnTooltipSetSpell(self) - Run when the tooltip is filled with information about a spell.
OnTooltipSetUnit(self) - Run when the tooltip is filled with information about a unit.

Model

PlayerModel / TabardModel inherit the handlers from Model.

OnAnimFinished(self) - Run when the model's animation finishes.
OnModelLoaded(self)

CinematicModel

OnPanFinished

DressupModel

OnDressModel(self)

MovieFrame

OnMovieFinished(self) - Run when a movie frame's movie ends.
OnMovieHideSubtitle(self) - Runs when the movie's most recently displayed subtitle should be hidden.
OnMovieShowSubtitle(self, text) - Runs when a subtitle for the playing movie should be displayed.

ScrollFrame

OnHorizontalScroll(self, offset) - Run when the scroll frame's horizontal scroll position changes.
OnScrollRangeChanged(self, xrange, yrange) - Run when the scroll frame's scroll position is changed.
OnVerticalScroll(self, offset) - Run when the scroll frame's vertical scroll position changes.

Slider

OnMinMaxChanged - Run when the slider's or status bar's minimum and maximum values change.
OnValueChanged (self, value) - Run when the slider's or status bar's value changes.

StatusBar

OnMinMaxChanged - Run when the slider's or status bar's minimum and maximum values change.
OnValueChanged (self, value) - Run when the slider's or status bar's value changes.

References