Urho3D::DropDownList Class Reference

Public Member Functions | Static Public Member Functions | Protected Member Functions | Protected Attributes | Private Member Functions | Private Attributes | List of all members
Urho3D::DropDownList Class Reference

Menu UI element that displays a popup list view. More...

#include <Urho3D/UI/DropDownList.h>

Inheritance diagram for Urho3D::DropDownList:
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Collaboration diagram for Urho3D::DropDownList:
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Public Member Functions

 DropDownList (Context *context)
 Construct.
 
 ~DropDownList () override
 Destruct.
 
void ApplyAttributes () override
 Apply attribute changes that can not be applied immediately.
 
void GetBatches (PODVector< UIBatch > &batches, PODVector< float > &vertexData, const IntRect &currentScissor) override
 Return UI rendering batches.
 
void OnShowPopup () override
 React to the popup being shown.
 
void OnHidePopup () override
 React to the popup being hidden.
 
void OnSetEditable () override
 React to editable status change.
 
void AddItem (UIElement *item)
 Add item to the end of the list.
 
void InsertItem (unsigned index, UIElement *item)
 Insert item to a specific position.
 
void RemoveItem (UIElement *item)
 Remove specific item.
 
void RemoveItem (unsigned index)
 Remove item at index.
 
void RemoveAllItems ()
 Remove all items.
 
void SetSelection (unsigned index)
 
void SetPlaceholderText (const String &text)
 
void SetResizePopup (bool enable)
 
unsigned GetNumItems () const
 
UIElement * GetItem (unsigned index) const
 
PODVector< UIElement * > GetItems () const
 Return all items.
 
unsigned GetSelection () const
 
UIElement * GetSelectedItem () const
 
ListView * GetListView () const
 
UIElement * GetPlaceholder () const
 
const String & GetPlaceholderText () const
 
bool GetResizePopup () const
 
void SetSelectionAttr (unsigned index)
 Set selection attribute.
 
- Public Member Functions inherited from Urho3D::Menu
 Menu (Context *context)
 Construct.
 
 ~Menu () override
 Destruct.
 
bool LoadXML (const XMLElement &source, XMLFile *styleFile) override
 Load from XML data with style. Return true if successful.
 
bool SaveXML (XMLElement &dest) const override
 Save as XML data. Return true if successful.
 
void Update (float timeStep) override
 Perform UI element update.
 
void OnHover (const IntVector2 &position, const IntVector2 &screenPosition, MouseButtonFlags buttons, QualifierFlags qualifiers, Cursor *cursor) override
 React to mouse hover.
 
void SetPopup (UIElement *popup)
 
void SetPopupOffset (const IntVector2 &offset)
 
void SetPopupOffset (int x, int y)
 Set popup element offset.
 
void ShowPopup (bool enable)
 
void SetAccelerator (int key, int qualifiers)
 Set accelerator key (set zero key code to disable).
 
UIElement * GetPopup () const
 
const IntVector2 & GetPopupOffset () const
 
bool GetShowPopup () const
 
int GetAcceleratorKey () const
 
int GetAcceleratorQualifiers () const
 
- Public Member Functions inherited from Urho3D::Button
 Button (Context *context)
 Construct.
 
 ~Button () override
 Destruct.
 
void OnClickBegin (const IntVector2 &position, const IntVector2 &screenPosition, MouseButton button, MouseButtonFlags buttons, QualifierFlags qualifiers, Cursor *cursor) override
 React to mouse click begin.
 
void OnClickEnd (const IntVector2 &position, const IntVector2 &screenPosition, MouseButton button, MouseButtonFlags buttons, QualifierFlags qualifiers, Cursor *cursor, UIElement *beginElement) override
 React to mouse click end.
 
void OnDragMove (const IntVector2 &position, const IntVector2 &screenPosition, const IntVector2 &deltaPos, MouseButtonFlags buttons, QualifierFlags qualifiers, Cursor *cursor) override
 React to mouse drag motion.
 
void OnKey (Key key, MouseButtonFlags buttons, QualifierFlags qualifiers) override
 React to a key press.
 
void SetPressedOffset (const IntVector2 &offset)
 
void SetPressedOffset (int x, int y)
 Set offset to image rectangle used when pressed.
 
void SetPressedChildOffset (const IntVector2 &offset)
 
void SetPressedChildOffset (int x, int y)
 Set offset of child elements when pressed.
 
void SetRepeat (float delay, float rate)
 Set repeat properties. Rate 0 (default) disables repeat.
 
void SetRepeatDelay (float delay)
 
void SetRepeatRate (float rate)
 
const IntVector2 & GetPressedOffset () const
 
const IntVector2 & GetPressedChildOffset () const
 
float GetRepeatDelay () const
 
float GetRepeatRate () const
 
bool IsPressed () const
 
- Public Member Functions inherited from Urho3D::BorderImage
 BorderImage (Context *context)
 Construct.
 
 ~BorderImage () override
 Destruct.
 
void SetTexture (Texture *texture)
 
void SetImageRect (const IntRect &rect)
 
void SetFullImageRect ()
 Use whole texture as the image.
 
void SetBorder (const IntRect &rect)
 
void SetImageBorder (const IntRect &rect)
 
void SetHoverOffset (const IntVector2 &offset)
 
void SetHoverOffset (int x, int y)
 Set offset to image rectangle used on hover.
 
void SetDisabledOffset (const IntVector2 &offset)
 
void SetDisabledOffset (int x, int y)
 Set offset to image rectangle used when disabled.
 
void SetBlendMode (BlendMode mode)
 
void SetTiled (bool enable)
 
void SetMaterial (Material *material)
 
Texture * GetTexture () const
 
const IntRect & GetImageRect () const
 
const IntRect & GetBorder () const
 
const IntRect & GetImageBorder () const
 
const IntVector2 & GetHoverOffset () const
 
const IntVector2 & GetDisabledOffset () const
 
BlendMode GetBlendMode () const
 
bool IsTiled () const
 
Material * GetMaterial () const
 
void SetTextureAttr (const ResourceRef &value)
 Set texture attribute.
 
ResourceRef GetTextureAttr () const
 Return texture attribute.
 
void SetMaterialAttr (const ResourceRef &value)
 Set material attribute.
 
ResourceRef GetMaterialAttr () const
 Get material attribute.
 
- Public Member Functions inherited from Urho3D::UIElement
 UIElement (Context *context)
 Construct.
 
 ~UIElement () override
 Destruct.
 
void ApplyAttributes () override
 Apply attribute changes that can not be applied immediately.
 
bool LoadXML (const XMLElement &source) override
 Load from XML data. Return true if successful.
 
virtual UIElement * LoadChildXML (const XMLElement &childElem, XMLFile *styleFile)
 Create a child by loading from XML data with style. Returns the child element if successful, null if otherwise.
 
bool SaveXML (XMLElement &dest) const override
 Save as XML data. Return true if successful.
 
virtual bool IsWithinScissor (const IntRect &currentScissor)
 Return whether is visible and inside a scissor rectangle and should be rendered.
 
virtual const IntVector2 & GetScreenPosition () const
 
virtual void GetDebugDrawBatches (PODVector< UIBatch > &batches, PODVector< float > &vertexData, const IntRect &currentScissor)
 Return UI rendering batches for debug draw.
 
virtual void OnDoubleClick (const IntVector2 &position, const IntVector2 &screenPosition, MouseButton button, MouseButtonFlags buttons, QualifierFlags qualifiers, Cursor *cursor)
 React to double mouse click.
 
virtual void OnDragBegin (const IntVector2 &position, const IntVector2 &screenPosition, MouseButtonFlags buttons, QualifierFlags qualifiers, Cursor *cursor)
 React to mouse drag begin.
 
virtual void OnDragEnd (const IntVector2 &position, const IntVector2 &screenPosition, MouseButtonFlags dragButtons, MouseButtonFlags releaseButtons, Cursor *cursor)
 React to mouse drag end.
 
virtual void OnDragCancel (const IntVector2 &position, const IntVector2 &screenPosition, MouseButtonFlags dragButtons, MouseButtonFlags cancelButtons, Cursor *cursor)
 React to a mouse drag cancel event (ie, when an extra button is pressed).
 
virtual bool OnDragDropTest (UIElement *source)
 React to drag and drop test. Return true to signal that the drop is acceptable.
 
virtual bool OnDragDropFinish (UIElement *source)
 React to drag and drop finish. Return true to signal that the drop was accepted.
 
virtual void OnWheel (int delta, MouseButtonFlags buttons, QualifierFlags qualifiers)
 React to mouse wheel.
 
virtual void OnTextInput (const String &text)
 React to text input event.
 
virtual void OnResize (const IntVector2 &newSize, const IntVector2 &delta)
 React to resize.
 
virtual void OnPositionSet (const IntVector2 &newPosition)
 React to position change.
 
virtual void OnIndentSet ()
 React to indent change.
 
virtual IntVector2 ScreenToElement (const IntVector2 &screenPosition)
 Convert screen coordinates to element coordinates.
 
virtual IntVector2 ElementToScreen (const IntVector2 &position)
 Convert element coordinates to screen coordinates.
 
virtual bool IsWheelHandler () const
 Return whether the element could handle wheel input.
 
bool LoadXML (Deserializer &source)
 Load from an XML file. Return true if successful.
 
bool SaveXML (Serializer &dest, const String &indentation="\t") const
 Save to an XML file. Return true if successful.
 
bool FilterAttributes (XMLElement &dest) const
 Filter attributes in serialization process.
 
void SetName (const String &name)
 
void SetPosition (const IntVector2 &position)
 
void SetPosition (int x, int y)
 Set position.
 
void SetSize (const IntVector2 &size)
 
void SetSize (int width, int height)
 Set size.
 
void SetWidth (int width)
 
void SetHeight (int height)
 
void SetMinSize (const IntVector2 &minSize)
 
void SetMinSize (int width, int height)
 Set minimum size.
 
void SetMinWidth (int width)
 
void SetMinHeight (int height)
 
void SetMaxSize (const IntVector2 &maxSize)
 
void SetMaxSize (int width, int height)
 Set maximum size.
 
void SetMaxWidth (int width)
 
void SetMaxHeight (int height)
 
void SetFixedSize (const IntVector2 &size)
 Set fixed size.
 
void SetFixedSize (int width, int height)
 Set fixed size.
 
void SetFixedWidth (int width)
 Set fixed width.
 
void SetFixedHeight (int height)
 Set fixed height.
 
void SetAlignment (HorizontalAlignment hAlign, VerticalAlignment vAlign)
 Set horizontal and vertical alignment.
 
void SetHorizontalAlignment (HorizontalAlignment align)
 
void SetVerticalAlignment (VerticalAlignment align)
 
void SetEnableAnchor (bool enable)
 
void SetMinAnchor (const Vector2 &anchor)
 
void SetMinAnchor (float x, float y)
 Set minimum anchor.
 
void SetMaxAnchor (const Vector2 &anchor)
 
void SetMaxAnchor (float x, float y)
 Set maximum anchor.
 
void SetMinOffset (const IntVector2 &offset)
 
void SetMaxOffset (const IntVector2 &offset)
 
void SetPivot (const Vector2 &pivot)
 
void SetPivot (float x, float y)
 Set pivot relative to element's size (from 0 to 1, where 0.5 is center). Overrides horizontal & vertical alignment.
 
void SetClipBorder (const IntRect &rect)
 
void SetColor (const Color &color)
 
void SetColor (Corner corner, const Color &color)
 
void SetPriority (int priority)
 
void SetOpacity (float opacity)
 
void SetBringToFront (bool enable)
 
void SetBringToBack (bool enable)
 
void SetClipChildren (bool enable)
 
void SetSortChildren (bool enable)
 
void SetUseDerivedOpacity (bool enable)
 
void SetEnabled (bool enable)
 
void SetDeepEnabled (bool enable)
 Set enabled state on self and child elements. Elements' own enabled state is remembered (IsEnabledSelf) and can be restored.
 
void ResetDeepEnabled ()
 Reset enabled state to the element's remembered state prior to calling SetDeepEnabled.
 
void SetEnabledRecursive (bool enable)
 Set enabled state on self and child elements. Unlike SetDeepEnabled this does not remember the elements' own enabled state, but overwrites it.
 
void SetEditable (bool enable)
 
void SetFocus (bool enable)
 
void SetSelected (bool enable)
 
void SetVisible (bool enable)
 
void SetFocusMode (FocusMode mode)
 
void SetDragDropMode (DragAndDropModeFlags mode)
 
bool SetStyle (const String &styleName, XMLFile *file=nullptr)
 Set style from an XML file. Find the style element by name. If the style file is not explicitly provided, use the default style from parental chain. Return true if the style is applied successfully. See also Defining UI layouts programmatically.
 
bool SetStyle (const XMLElement &element)
 Set style from an XML element. Return true if the style is applied successfully.
 
bool SetStyleAuto (XMLFile *file=nullptr)
 Set style from an XML file. Find the style element automatically by using the element's typename. If the style file is not explicitly provided, use the default style from parental chain. Return true if the style is applied successfully. See also Defining UI layouts programmatically.
 
void SetDefaultStyle (XMLFile *style)
 
void SetLayout (LayoutMode mode, int spacing=0, const IntRect &border=IntRect::ZERO)
 Set layout parameters.
 
void SetLayoutMode (LayoutMode mode)
 
void SetLayoutSpacing (int spacing)
 
void SetLayoutBorder (const IntRect &border)
 
void SetLayoutFlexScale (const Vector2 &scale)
 
void SetIndent (int indent)
 
void SetIndentSpacing (int indentSpacing)
 
void UpdateLayout ()
 Manually update layout. Should not be necessary in most cases, but is provided for completeness.
 
void DisableLayoutUpdate ()
 Disable automatic layout update. Should only be used if there are performance problems.
 
void EnableLayoutUpdate ()
 Enable automatic layout update.
 
void BringToFront ()
 Bring UI element to front.
 
UIElement * CreateChild (StringHash type, const String &name=String::EMPTY, unsigned index=M_MAX_UNSIGNED)
 Create and add a child element and return it.
 
void AddChild (UIElement *element)
 Add a child element.
 
void InsertChild (unsigned index, UIElement *element)
 Insert a child element into a specific position in the child list.
 
void RemoveChild (UIElement *element, unsigned index=0)
 Remove a child element. Starting search at specified index if provided.
 
void RemoveChildAtIndex (unsigned index)
 Remove a child element at index.
 
void RemoveAllChildren ()
 Remove all child elements.
 
void Remove ()
 Remove from the parent element. If no other shared pointer references exist, causes immediate deletion.
 
unsigned FindChild (UIElement *element) const
 Find child index. Return M_MAX_UNSIGNED if not found.
 
void SetParent (UIElement *parent, unsigned index=M_MAX_UNSIGNED)
 Set parent element. Same as parent->InsertChild(index, this).
 
void SetVar (StringHash key, const Variant &value)
 Set a user variable.
 
void SetInternal (bool enable)
 
void SetTraversalMode (TraversalMode traversalMode)
 
void SetElementEventSender (bool flag)
 
void SetTags (const StringVector &tags)
 Set tags. Old tags are overwritten.
 
void AddTag (const String &tag)
 Add a tag.
 
void AddTags (const String &tags, char separator=';')
 Add tags with the specified separator (; by default).
 
void AddTags (const StringVector &tags)
 Add tags.
 
bool RemoveTag (const String &tag)
 Remove specific tag. Return true if existed.
 
void RemoveAllTags ()
 Remove all tags.
 
template<class T >
T * CreateChild (const String &name=String::EMPTY, unsigned index=M_MAX_UNSIGNED)
 Template version of creating a child element.
 
template<class T >
T * GetChildStaticCast (unsigned index) const
 Template version of returning child element by index using static cast.
 
template<class T >
T * GetChildStaticCast (const String &name, bool recursive=false) const
 Template version of returning child element by name using static cast.
 
template<class T >
T * GetChildStaticCast (const StringHash &key, const Variant &value=Variant::EMPTY, bool recursive=false) const
 Template version of returning child element by variable using static cast. If only key is provided, return the first child having the matching variable key. If value is also provided then the actual variable value would also be checked against.
 
template<class T >
T * GetChildDynamicCast (unsigned index) const
 Template version of returning child element by index using dynamic cast. May return 0 when casting failed.
 
template<class T >
T * GetChildDynamicCast (const String &name, bool recursive=false) const
 Template version of returning child element by name using dynamic cast. May return 0 when casting failed.
 
template<class T >
T * GetChildDynamicCast (const StringHash &key, const Variant &value=Variant::EMPTY, bool recursive=false) const
 Template version of returning child element by variable. If only key is provided, return the first child having the matching variable key. If value is also provided then the actual variable value would also be checked against using dynamic cast. May return 0 when casting failed.
 
const String & GetName () const
 
const IntVector2 & GetPosition () const
 
const IntVector2 & GetSize () const
 
int GetWidth () const
 
int GetHeight () const
 
const IntVector2 & GetMinSize () const
 
int GetMinWidth () const
 
int GetMinHeight () const
 
const IntVector2 & GetMaxSize () const
 
int GetMaxWidth () const
 
int GetMaxHeight () const
 
bool IsFixedSize () const
 
bool IsFixedWidth () const
 
bool IsFixedHeight () const
 
const IntVector2 & GetChildOffset () const
 
HorizontalAlignment GetHorizontalAlignment () const
 
VerticalAlignment GetVerticalAlignment () const
 
bool GetEnableAnchor () const
 
const Vector2 & GetMinAnchor () const
 
const Vector2 & GetMaxAnchor () const
 
const IntVector2 & GetMinOffset () const
 
const IntVector2 & GetMaxOffset () const
 
const Vector2 & GetPivot () const
 
const IntRect & GetClipBorder () const
 
const Color & GetColor (Corner corner) const
 
int GetPriority () const
 
float GetOpacity () const
 
float GetDerivedOpacity () const
 
bool GetBringToFront () const
 
bool GetBringToBack () const
 
bool GetClipChildren () const
 
bool GetSortChildren () const
 
bool GetUseDerivedOpacity () const
 
bool HasFocus () const
 
bool IsChildOf (UIElement *element) const
 Return whether is a direct or indirect child of specified element.
 
bool IsEnabled () const
 
bool IsEnabledSelf () const
 
bool IsEditable () const
 
bool IsSelected () const
 
bool IsVisible () const
 
bool IsVisibleEffective () const
 
bool IsHovering () const
 
bool IsInternal () const
 
bool HasColorGradient () const
 
FocusMode GetFocusMode () const
 
DragAndDropModeFlags GetDragDropMode () const
 
const String & GetAppliedStyle () const
 
XMLFile * GetDefaultStyle (bool recursiveUp=true) const
 Return default style.
 
LayoutMode GetLayoutMode () const
 
int GetLayoutSpacing () const
 
const IntRect & GetLayoutBorder () const
 
const Vector2 & GetLayoutFlexScale () const
 
unsigned GetNumChildren (bool recursive=false) const
 
UIElement * GetChild (unsigned index) const
 
UIElement * GetChild (const String &name, bool recursive=false) const
 Return child element by name.
 
UIElement * GetChild (const StringHash &key, const Variant &value=Variant::EMPTY, bool recursive=false) const
 Return child element by variable. If only key is provided, return the first child having the matching variable key. If value is also provided then the actual variable value would also be checked against.
 
const Vector< SharedPtr< UIElement > > & GetChildren () const
 Return immediate child elements.
 
void GetChildren (PODVector< UIElement * > &dest, bool recursive=false) const
 Return child elements either recursively or non-recursively.
 
PODVector< UIElement * > GetChildren (bool recursive) const
 Return child elements, optionally recursive.
 
UIElement * GetParent () const
 
UIElement * GetRoot () const
 
const Color & GetDerivedColor () const
 Return derived color. Only valid when no gradient.
 
const Variant & GetVar (const StringHash &key) const
 Return a user variable.
 
const VariantMap & GetVars () const
 Return all user variables.
 
bool HasTag (const String &tag) const
 Return whether element is tagged by a specific tag.
 
const StringVector & GetTags () const
 
void GetChildrenWithTag (PODVector< UIElement * > &dest, const String &tag, bool recursive=false) const
 Return child elements with a specific tag either recursively or non-recursively.
 
PODVector< UIElement * > GetChildrenWithTag (const String &tag, bool recursive=false) const
 Return child elements with a specific tag either recursively or non-recursively.
 
MouseButtonFlags GetDragButtonCombo () const
 
unsigned GetDragButtonCount () const
 
bool IsInside (IntVector2 position, bool isScreen)
 Return whether a point (either in element or screen coordinates) is inside the element.
 
bool IsInsideCombined (IntVector2 position, bool isScreen)
 Return whether a point (either in element or screen coordinates) is inside the combined rect of the element and its children.
 
IntRect GetCombinedScreenRect ()
 
void SortChildren ()
 Sort child elements if sorting enabled and order dirty. Called by UI. More...
 
int GetLayoutElementMaxSize () const
 Return maximum layout element size in the layout direction. Only valid after layout has been calculated. Used internally by UI for optimizations.
 
int GetIndent () const
 
int GetIndentSpacing () const
 
int GetIndentWidth () const
 
void SetChildOffset (const IntVector2 &offset)
 Set child offset.
 
void SetHovering (bool enable)
 Set hovering state.
 
void AdjustScissor (IntRect &currentScissor)
 Adjust scissor for rendering.
 
void GetBatchesWithOffset (IntVector2 &offset, PODVector< UIBatch > &batches, PODVector< float > &vertexData, IntRect currentScissor)
 Get UI rendering batches with a specified offset. Also recurse to child elements.
 
const Color & GetColorAttr () const
 Return color attribute. Uses just the top-left color.
 
TraversalMode GetTraversalMode () const
 
bool IsElementEventSender () const
 
UIElement * GetElementEventSender () const
 Get element which should send child added / removed events.
 
IntVector2 GetEffectiveMinSize () const
 Return effective minimum size, also considering layout. Used internally.
 
void SetRenderTexture (Texture2D *texture)
 Set texture to which element will be rendered.
 
- Public Member Functions inherited from Urho3D::Animatable
 Animatable (Context *context)
 Construct.
 
 ~Animatable () override
 Destruct.
 
bool LoadJSON (const JSONValue &source) override
 Load from JSON data. Return true if successful.
 
bool SaveJSON (JSONValue &dest) const override
 Save as JSON data. Return true if successful.
 
void SetAnimationEnabled (bool enable)
 
void SetAnimationTime (float time)
 Set time position of all attribute animations or an object animation manually. Automatic update should be disabled in this case.
 
void SetObjectAnimation (ObjectAnimation *objectAnimation)
 
void SetAttributeAnimation (const String &name, ValueAnimation *attributeAnimation, WrapMode wrapMode=WM_LOOP, float speed=1.0f)
 Set attribute animation.
 
void SetAttributeAnimationWrapMode (const String &name, WrapMode wrapMode)
 Set attribute animation wrap mode.
 
void SetAttributeAnimationSpeed (const String &name, float speed)
 Set attribute animation speed.
 
void SetAttributeAnimationTime (const String &name, float time)
 Set attribute animation time position manually. Automatic update should be disabled in this case.
 
void RemoveObjectAnimation ()
 Remove object animation. Same as calling SetObjectAnimation with a null pointer.
 
void RemoveAttributeAnimation (const String &name)
 Remove attribute animation. Same as calling SetAttributeAnimation with a null pointer.
 
bool GetAnimationEnabled () const
 
ObjectAnimation * GetObjectAnimation () const
 
ValueAnimation * GetAttributeAnimation (const String &name) const
 Return attribute animation.
 
WrapMode GetAttributeAnimationWrapMode (const String &name) const
 Return attribute animation wrap mode.
 
float GetAttributeAnimationSpeed (const String &name) const
 Return attribute animation speed.
 
float GetAttributeAnimationTime (const String &name) const
 Return attribute animation time position.
 
void SetObjectAnimationAttr (const ResourceRef &value)
 Set object animation attribute.
 
ResourceRef GetObjectAnimationAttr () const
 Return object animation attribute.
 
- Public Member Functions inherited from Urho3D::Serializable
 Serializable (Context *context)
 Construct.
 
 ~Serializable () override
 Destruct.
 
virtual void OnSetAttribute (const AttributeInfo &attr, const Variant &src)
 Handle attribute write access. Default implementation writes to the variable at offset, or invokes the set accessor.
 
virtual void OnGetAttribute (const AttributeInfo &attr, Variant &dest) const
 Handle attribute read access. Default implementation reads the variable at offset, or invokes the get accessor.
 
virtual const Vector< AttributeInfo > * GetAttributes () const
 Return attribute descriptions, or null if none defined.
 
virtual const Vector< AttributeInfo > * GetNetworkAttributes () const
 Return network replication attribute descriptions, or null if none defined.
 
virtual bool Load (Deserializer &source)
 Load from binary data. Return true if successful.
 
virtual bool Save (Serializer &dest) const
 Save as binary data. Return true if successful.
 
virtual bool SaveDefaultAttributes () const
 Return whether should save default-valued attributes into XML. Default false.
 
virtual void MarkNetworkUpdate ()
 Mark for attribute check on the next network update.
 
bool SetAttribute (unsigned index, const Variant &value)
 
bool SetAttribute (const String &name, const Variant &value)
 Set attribute by name. Return true if successfully set.
 
void SetInstanceDefault (bool enable)
 Set instance-level default flag.
 
void ResetToDefault ()
 Reset all editable attributes to their default values.
 
void RemoveInstanceDefault ()
 Remove instance's default values if they are set previously.
 
void SetTemporary (bool enable)
 
void SetInterceptNetworkUpdate (const String &attributeName, bool enable)
 Enable interception of an attribute from network updates. Intercepted attributes are sent as events instead of applying directly. This can be used to implement client side prediction.
 
void AllocateNetworkState ()
 Allocate network attribute state.
 
void WriteInitialDeltaUpdate (Serializer &dest, unsigned char timeStamp)
 Write initial delta network update.
 
void WriteDeltaUpdate (Serializer &dest, const DirtyBits &attributeBits, unsigned char timeStamp)
 Write a delta network update according to dirty attribute bits.
 
void WriteLatestDataUpdate (Serializer &dest, unsigned char timeStamp)
 Write a latest data network update.
 
bool ReadDeltaUpdate (Deserializer &source)
 Read and apply a network delta update. Return true if attributes were changed.
 
bool ReadLatestDataUpdate (Deserializer &source)
 Read and apply a network latest data update. Return true if attributes were changed.
 
Variant GetAttribute (unsigned index) const
 
Variant GetAttribute (const String &name) const
 Return attribute value by name. Return empty if not found.
 
Variant GetAttributeDefault (unsigned index) const
 
Variant GetAttributeDefault (const String &name) const
 Return attribute default value by name. Return empty if not found.
 
unsigned GetNumAttributes () const
 
unsigned GetNumNetworkAttributes () const
 Return number of network replication attributes.
 
bool IsTemporary () const
 
bool GetInterceptNetworkUpdate (const String &attributeName) const
 Return whether an attribute's network updates are being intercepted.
 
NetworkState * GetNetworkState () const
 Return the network attribute state, if allocated.
 
- Public Member Functions inherited from Urho3D::Object
 Object (Context *context)
 Construct.
 
 ~Object () override
 Destruct. Clean up self from event sender & receiver structures.
 
virtual StringHash GetType () const =0
 
virtual const String & GetTypeName () const =0
 
virtual const TypeInfo * GetTypeInfo () const =0
 Return type info.
 
virtual void OnEvent (Object *sender, StringHash eventType, VariantMap &eventData)
 Handle event.
 
bool IsInstanceOf (StringHash type) const
 Check current instance is type of specified type.
 
bool IsInstanceOf (const TypeInfo *typeInfo) const
 Check current instance is type of specified type.
 
template<typename T >
bool IsInstanceOf () const
 Check current instance is type of specified class.
 
template<typename T >
T * Cast ()
 Cast the object to specified most derived class.
 
template<typename T >
const T * Cast () const
 Cast the object to specified most derived class.
 
void SubscribeToEvent (StringHash eventType, EventHandler *handler)
 Subscribe to an event that can be sent by any sender.
 
void SubscribeToEvent (Object *sender, StringHash eventType, EventHandler *handler)
 Subscribe to a specific sender's event.
 
void SubscribeToEvent (StringHash eventType, const std::function< void(StringHash, VariantMap &)> &function, void *userData=nullptr)
 Subscribe to an event that can be sent by any sender.
 
void SubscribeToEvent (Object *sender, StringHash eventType, const std::function< void(StringHash, VariantMap &)> &function, void *userData=nullptr)
 Subscribe to a specific sender's event.
 
void UnsubscribeFromEvent (StringHash eventType)
 Unsubscribe from an event.
 
void UnsubscribeFromEvent (Object *sender, StringHash eventType)
 Unsubscribe from a specific sender's event.
 
void UnsubscribeFromEvents (Object *sender)
 Unsubscribe from a specific sender's events.
 
void UnsubscribeFromAllEvents ()
 Unsubscribe from all events.
 
void UnsubscribeFromAllEventsExcept (const PODVector< StringHash > &exceptions, bool onlyUserData)
 Unsubscribe from all events except those listed, and optionally only those with userdata (script registered events).
 
void SendEvent (StringHash eventType)
 Send event to all subscribers.
 
void SendEvent (StringHash eventType, VariantMap &eventData)
 Send event with parameters to all subscribers.
 
VariantMap & GetEventDataMap () const
 Return a preallocated map for event data. Used for optimization to avoid constant re-allocation of event data maps.
 
template<typename... Args>
void SendEvent (StringHash eventType, Args... args)
 Send event with variadic parameter pairs to all subscribers. The parameter pairs is a list of paramID and paramValue separated by comma, one pair after another.
 
Context * GetContext () const
 Return execution context.
 
const Variant & GetGlobalVar (StringHash key) const
 
const VariantMap & GetGlobalVars () const
 
void SetGlobalVar (StringHash key, const Variant &value)
 
Object * GetSubsystem (StringHash type) const
 Return subsystem by type.
 
Object * GetEventSender () const
 Return active event sender. Null outside event handling.
 
EventHandler * GetEventHandler () const
 Return active event handler. Null outside event handling.
 
bool HasSubscribedToEvent (StringHash eventType) const
 Return whether has subscribed to an event without specific sender.
 
bool HasSubscribedToEvent (Object *sender, StringHash eventType) const
 Return whether has subscribed to a specific sender's event.
 
bool HasEventHandlers () const
 Return whether has subscribed to any event.
 
template<class T >
T * GetSubsystem () const
 Template version of returning a subsystem.
 
const String & GetCategory () const
 
void SetBlockEvents (bool block)
 Block object from sending and receiving events.
 
bool GetBlockEvents () const
 Return sending and receiving events blocking status.
 
- Public Member Functions inherited from Urho3D::RefCounted
 RefCounted ()
 Construct. Allocate the reference count structure and set an initial self weak reference.
 
virtual ~RefCounted ()
 Destruct. Mark as expired and also delete the reference count structure if no outside weak references exist.
 
 RefCounted (const RefCounted &rhs)=delete
 Prevent copy construction.
 
RefCounted & operator= (const RefCounted &rhs)=delete
 Prevent assignment.
 
void AddRef ()
 Increment reference count. Can also be called outside of a SharedPtr for traditional reference counting.
 
void ReleaseRef ()
 Decrement reference count and delete self if no more references. Can also be called outside of a SharedPtr for traditional reference counting.
 
int Refs () const
 
int WeakRefs () const
 
RefCount * RefCountPtr ()
 Return pointer to the reference count structure.
 

Static Public Member Functions

static void RegisterObject (Context *context)
 Register object factory.
 
- Static Public Member Functions inherited from Urho3D::Menu
static void RegisterObject (Context *context)
 Register object factory.
 
- Static Public Member Functions inherited from Urho3D::Button
static void RegisterObject (Context *context)
 Register object factory.
 
- Static Public Member Functions inherited from Urho3D::BorderImage
static void RegisterObject (Context *context)
 Register object factory.
 
- Static Public Member Functions inherited from Urho3D::UIElement
static void RegisterObject (Context *context)
 Register object factory.
 
- Static Public Member Functions inherited from Urho3D::Animatable
static void RegisterObject (Context *context)
 Register object factory.
 
- Static Public Member Functions inherited from Urho3D::Object
static const TypeInfo * GetTypeInfoStatic ()
 Return type info static.
 

Protected Member Functions

bool FilterImplicitAttributes (XMLElement &dest) const override
 Filter implicit attributes in serialization process.
 
bool FilterPopupImplicitAttributes (XMLElement &dest) const override
 Filter implicit attributes in serialization process.
 
- Protected Member Functions inherited from Urho3D::Button
void SetPressed (bool enable)
 Set new pressed state.
 
- Protected Member Functions inherited from Urho3D::BorderImage
void GetBatches (PODVector< UIBatch > &batches, PODVector< float > &vertexData, const IntRect &currentScissor, const IntVector2 &offset)
 Return UI rendering batches with offset to image rectangle.
 
- Protected Member Functions inherited from Urho3D::UIElement
void OnAttributeAnimationAdded () override
 Handle attribute animation added.
 
void OnAttributeAnimationRemoved () override
 Handle attribute animation removed.
 
Animatable * FindAttributeAnimationTarget (const String &name, String &outName) override
 Find target of an attribute animation from object hierarchy by name.
 
void MarkDirty ()
 Mark screen position as needing an update.
 
bool RemoveChildXML (XMLElement &parent, const String &name) const
 Remove child XML element by matching attribute name.
 
bool RemoveChildXML (XMLElement &parent, const String &name, const String &value) const
 Remove child XML element by matching attribute name and value.
 
bool FilterUIStyleAttributes (XMLElement &dest, const XMLElement &styleElem) const
 Filter UI-style attributes in serialization process.
 
void UpdateAnchoring ()
 Update anchored size & position. Only called when anchoring is enabled.
 
- Protected Member Functions inherited from Urho3D::Animatable
void SetObjectAttributeAnimation (const String &name, ValueAnimation *attributeAnimation, WrapMode wrapMode, float speed)
 Set object attribute animation internal.
 
void OnObjectAnimationAdded (ObjectAnimation *objectAnimation)
 Handle object animation added.
 
void OnObjectAnimationRemoved (ObjectAnimation *objectAnimation)
 Handle object animation removed.
 
void UpdateAttributeAnimations (float timeStep)
 Update attribute animations.
 
bool IsAnimatedNetworkAttribute (const AttributeInfo &attrInfo) const
 Is animated network attribute.
 
AttributeAnimationInfo * GetAttributeAnimationInfo (const String &name) const
 Return attribute animation info.
 
void HandleAttributeAnimationAdded (StringHash eventType, VariantMap &eventData)
 Handle attribute animation added.
 
void HandleAttributeAnimationRemoved (StringHash eventType, VariantMap &eventData)
 Handle attribute animation removed.
 

Protected Attributes

SharedPtr< ListView > listView_
 Listview element.
 
SharedPtr< UIElement > placeholder_
 Selected item placeholder element.
 
bool resizePopup_
 Resize popup flag.
 
- Protected Attributes inherited from Urho3D::Menu
SharedPtr< UIElement > popup_
 Popup element.
 
IntVector2 popupOffset_
 Popup element offset.
 
bool showPopup_
 Show popup flag.
 
int acceleratorKey_
 Accelerator key code.
 
int acceleratorQualifiers_
 Accelerator qualifiers.
 
- Protected Attributes inherited from Urho3D::Button
IntVector2 pressedOffset_
 Pressed image offset.
 
IntVector2 pressedChildOffset_
 Pressed label offset.
 
float repeatDelay_
 Repeat delay.
 
float repeatRate_
 Repeat rate.
 
float repeatTimer_
 Repeat timer.
 
bool pressed_
 Current pressed state.
 
- Protected Attributes inherited from Urho3D::BorderImage
SharedPtr< Texture > texture_
 Texture.
 
IntRect imageRect_
 Image rectangle.
 
IntRect border_
 Border dimensions on screen.
 
IntRect imageBorder_
 Border dimensions on the image.
 
IntVector2 hoverOffset_
 Offset to image rectangle on hover.
 
IntVector2 disabledOffset_
 Offset to image rectangle when disabled.
 
BlendMode blendMode_
 Blend mode flag.
 
bool tiled_
 Tiled flag.
 
SharedPtr< Material > material_
 Material used for custom rendering.
 
- Protected Attributes inherited from Urho3D::UIElement
String name_
 Name.
 
Vector< SharedPtr< UIElement > > children_
 Child elements.
 
UIElement * parent_ {}
 Parent element.
 
IntRect clipBorder_
 Child element clipping border.
 
Color colors_ [MAX_UIELEMENT_CORNERS]
 Colors.
 
VariantMap vars_
 User variables.
 
int priority_ {}
 Priority.
 
bool bringToFront_ {}
 Bring to front when focused flag.
 
bool bringToBack_ {true}
 Bring to back when defocused flag.
 
bool clipChildren_ {}
 Clip children flag.
 
bool sortChildren_ {true}
 Sort children according to priority flag.
 
bool useDerivedOpacity_ {true}
 Use derived opacity flag.
 
bool enabled_ {}
 Input enabled flag.
 
bool enabledPrev_ {}
 Last SetEnabled flag before any SetDeepEnabled.
 
bool editable_ {true}
 Value editable flag.
 
bool selected_ {}
 Selected flag.
 
bool visible_ {true}
 Visible flag.
 
bool hovering_ {}
 Hovering flag.
 
bool internal_ {}
 Internally created flag.
 
FocusMode focusMode_ {FM_NOTFOCUSABLE}
 Focus mode.
 
DragAndDropModeFlags dragDropMode_ {DD_DISABLED}
 Drag and drop flags.
 
LayoutMode layoutMode_ {LM_FREE}
 Layout mode.
 
int layoutSpacing_ {}
 Layout spacing.
 
IntRect layoutBorder_ {}
 Layout borders.
 
Vector2 layoutFlexScale_ {Vector2::ONE}
 Layout flex scale.
 
unsigned resizeNestingLevel_ {}
 Resize nesting level to prevent multiple events and endless loop.
 
unsigned layoutNestingLevel_ {}
 Layout update nesting level to prevent endless loop.
 
int layoutElementMaxSize_ {}
 Layout element maximum size in layout direction.
 
int indent_ {}
 Horizontal indentation.
 
int indentSpacing_ {16}
 Indent spacing (number of pixels per indentation level).
 
IntVector2 position_ {}
 Position.
 
IntVector2 screenPosition_
 Screen position.
 
bool positionDirty_ {true}
 Screen position dirty flag.
 
String appliedStyle_
 Applied style.
 
MouseButtonFlags dragButtonCombo_ {}
 Drag button combo.
 
unsigned dragButtonCount_ {}
 Drag button count.
 
- Protected Attributes inherited from Urho3D::Animatable
bool animationEnabled_
 Animation enabled.
 
SharedPtr< ObjectAnimation > objectAnimation_
 Animation.
 
HashSet< const AttributeInfo * > animatedNetworkAttributes_
 Animated network attribute set.
 
HashMap< String, SharedPtr< AttributeAnimationInfo > > attributeAnimationInfos_
 Attribute animation infos.
 
- Protected Attributes inherited from Urho3D::Serializable
UniquePtr< NetworkState > networkState_
 Network attribute state.
 
- Protected Attributes inherited from Urho3D::Object
Context * context_
 Execution context.
 

Private Member Functions

 URHO3D_OBJECT (DropDownList, Menu)
 
void HandleItemClicked (StringHash eventType, VariantMap &eventData)
 Handle listview item click event.
 
void HandleListViewKey (StringHash eventType, VariantMap &eventData)
 Handle a key press from the listview.
 
void HandleSelectionChanged (StringHash eventType, VariantMap &eventData)
 Handle the listview selection change. Set placeholder text hidden/visible as necessary.
 

Private Attributes

unsigned selectionAttr_
 Selected item index attribute.
 

Detailed Description

Menu UI element that displays a popup list view.

Member Function Documentation

◆ GetItem()

UIElement * Urho3D::DropDownList::GetItem ( unsigned  index) const

Return item at index.

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◆ GetListView()

ListView* Urho3D::DropDownList::GetListView ( ) const
inline

Return listview element.

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◆ GetNumItems()

unsigned Urho3D::DropDownList::GetNumItems ( ) const

Return number of items.

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◆ GetPlaceholder()

UIElement* Urho3D::DropDownList::GetPlaceholder ( ) const
inline

Return selected item placeholder element.

◆ GetPlaceholderText()

const String & Urho3D::DropDownList::GetPlaceholderText ( ) const

Return place holder text.

◆ GetResizePopup()

bool Urho3D::DropDownList::GetResizePopup ( ) const
inline

Return whether popup should be automatically resized.

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◆ GetSelectedItem()

UIElement * Urho3D::DropDownList::GetSelectedItem ( ) const

Return selected item, or null if none selected.

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◆ GetSelection()

unsigned Urho3D::DropDownList::GetSelection ( ) const

Return selection index, or M_MAX_UNSIGNED if none selected.

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◆ SetPlaceholderText()

void Urho3D::DropDownList::SetPlaceholderText ( const String &  text)

Set place holder text. This is the text shown when there is no selection (-1) in drop down list. Note that if the list has items, the default is to show the first item, so the "no selection" state has to be set explicitly.

◆ SetResizePopup()

void Urho3D::DropDownList::SetResizePopup ( bool  enable)

Set whether popup should be automatically resized to match the dropdown button width.

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◆ SetSelection()

void Urho3D::DropDownList::SetSelection ( unsigned  index)

Set selection.

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The documentation for this class was generated from the following files:
  • Source/Urho3D/UI/DropDownList.h
  • Source/Urho3D/UI/DropDownList.cpp