dropdownprefab.c

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class DropdownPrefab extends ScriptedWidgetEventHandler
{
 protected Widget m_Root;
 protected Widget m_Parent;
 protected ScrollWidget m_Scroller;
 protected Widget m_ContentContainer;
 protected ref array<Widget> m_Content = new array<Widget>;
 
 protected Widget m_Button;
 protected Widget m_Holder;
 protected TextWidget m_Text;
 protected ImageWidget m_ImageExpand;
 protected ImageWidget m_ImageCollapse;
 
 protected bool m_IsExpanded;
 ref ScriptInvoker m_OnSelectItem = new ScriptInvoker();
 
 void DropdownPrefab( Widget root, string text = "" )
 {
 m_Parent = root;
 m_Root = GetGame().GetWorkspace().CreateWidgets( "gui/layouts/new_ui/dropdown_prefab/dropdown_prefab.layout", root );
 
 m_Scroller = ScrollWidget.Cast( m_Root.FindAnyWidget( "dropdown_container" ) );
 m_ContentContainer = m_Root.FindAnyWidget( "dropdown_content" );
 m_Text = TextWidget.Cast( m_Root.FindAnyWidget( "dropdown_text" ) );
 m_Holder = m_Root.FindAnyWidget( "holder" );
 SetText( text );
 
 m_Button = m_Root.FindAnyWidget( "dropdown_selector_button" );
 m_ImageExpand = ImageWidget.Cast( m_Root.FindAnyWidget( "expand_image" ) );
 m_ImageCollapse = ImageWidget.Cast( m_Root.FindAnyWidget( "collapse_image" ) );
 
 m_Root.SetHandler( this );
 
 RefreshContent();
 }
 
 void RefreshContent()
 {
 Widget child = m_ContentContainer.GetChildren();
 while( child )
 {
 if( m_Content.Find( child ) > -1 )
 {
 m_Content.Insert( child );
 }
 }
 
 m_ContentContainer.Update();
 m_Root.Update();
 
 float x, y;
 m_ContentContainer.GetScreenSize( x, y );
 if( y > m_Scroller.GetContentHeight() )
 {
 m_Scroller.SetAlpha( 1 );
 }
 else
 {
 m_Scroller.SetAlpha( 0 );
 }
 }
 
 int AddElement( string text, Widget content = null )
 {
 ButtonWidget element = ButtonWidget.Cast( GetGame().GetWorkspace().CreateWidgets( "gui/layouts/new_ui/dropdown_prefab/dropdown_element.layout", m_ContentContainer ) );
 RichTextWidget textWidget = RichTextWidget.Cast(element.FindAnyWidget("dropdown_element_text"));
 textWidget.SetText( text );
 
 if( content )
 {
 element.AddChild( content, false );
 }
 m_ContentContainer.Update();
 textWidget.Update();
 m_Root.Update();
 element.Update();
 
 m_Content.Insert( element );
 return m_Content.Count() - 1;
 }
 
 void RemoveElement( int index )
 {
 if( 0 < index && index < m_Content.Count() )
 {
 delete m_Content.Get( index );
 m_ContentContainer.Update();
 m_Root.Update();
 m_Parent.Update();
 }
 }
 
 void Close()
 {
 if( m_IsExpanded )
 {
 m_IsExpanded = !m_IsExpanded;
 m_Scroller.Show( m_IsExpanded );
 m_ImageExpand.Show( !m_IsExpanded );
 m_ImageCollapse.Show( m_IsExpanded );
 
 m_Root.Update();
 m_Parent.Update();
 }
 }
 
 void SetText( string text )
 {
 m_Text.SetText( text );
 }
 
 override bool OnClick( Widget w, int x, int y, int button )
 {
 int index = m_Content.Find( w );
 if ( index > -1 )
 {
 m_OnSelectItem.Invoke( index );
 m_IsExpanded = false;
 m_Scroller.Show( m_IsExpanded );
 m_ImageExpand.Show( !m_IsExpanded );
 m_ImageCollapse.Show( m_IsExpanded );
 return true;
 }
 return false;
 }
 
 override bool OnMouseButtonDown( Widget w, int x, int y, int button )
 {
 if ( (w == m_Button || w == m_Text || w == m_Holder) && button == MouseState.LEFT )
 {
 m_IsExpanded = !m_IsExpanded;
 m_Scroller.Show( m_IsExpanded );
 m_ImageExpand.Show( !m_IsExpanded );
 m_ImageCollapse.Show( m_IsExpanded );
 
 m_Root.Update();
 m_Parent.Update();
 m_ContentContainer.Update();
 
 return true;
 }
 return false;
 }
}