343 lines
11 KiB
C#
343 lines
11 KiB
C#
using Microsoft.Xna.Framework;
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using Microsoft.Xna.Framework.Graphics;
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using System.Collections.Generic;
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using System.Linq;
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namespace Barotrauma
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{
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public class GUIDropDown : GUIComponent
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{
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public delegate bool OnSelectedHandler(GUIComponent selected, object obj = null);
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public OnSelectedHandler OnSelected;
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public OnSelectedHandler OnDropped;
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private GUIButton button;
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private GUIListBox listBox;
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private RectTransform currentListBoxParent;
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private List<RectTransform> parentHierarchy = new List<RectTransform>();
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private bool selectMultiple;
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public bool Dropped { get; set; }
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public object SelectedItemData
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{
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get
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{
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if (listBox.SelectedComponent == null) return null;
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return listBox.SelectedComponent.UserData;
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}
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}
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public override bool Enabled
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{
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get { return listBox.Enabled; }
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set { listBox.Enabled = value; }
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}
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public bool ButtonEnabled
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{
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get { return button.Enabled; }
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set { button.Enabled = value; }
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}
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public GUIComponent Selected
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{
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get { return listBox.SelectedComponent; }
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}
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public GUIListBox ListBox
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{
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get { return listBox; }
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}
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public object SelectedData
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{
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get
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{
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return listBox.SelectedComponent?.UserData;
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}
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}
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public int SelectedIndex
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{
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get
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{
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if (listBox.SelectedComponent == null) return -1;
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return listBox.Content.GetChildIndex(listBox.SelectedComponent);
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}
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}
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private List<object> selectedDataMultiple = new List<object>();
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public IEnumerable<object> SelectedDataMultiple
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{
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get { return selectedDataMultiple; }
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}
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private List<int> selectedIndexMultiple = new List<int>();
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public IEnumerable<int> SelectedIndexMultiple
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{
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get { return selectedIndexMultiple; }
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}
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public string Text
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{
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get { return button.Text; }
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set { button.Text = value; }
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}
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public override string ToolTip
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{
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get
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{
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return base.ToolTip;
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}
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set
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{
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base.ToolTip = value;
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button.ToolTip = value;
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listBox.ToolTip = value;
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}
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}
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public GUIDropDown(RectTransform rectT, string text = "", int elementCount = 4, string style = "", bool selectMultiple = false) : base(style, rectT)
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{
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this.selectMultiple = selectMultiple;
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button = new GUIButton(new RectTransform(Vector2.One, rectT), text, Alignment.CenterLeft, style: "GUIDropDown")
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{
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OnClicked = OnClicked
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};
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GUI.Style.Apply(button, "", this);
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listBox = new GUIListBox(new RectTransform(new Point(Rect.Width, Rect.Height * MathHelper.Clamp(elementCount, 2, 10)), rectT, Anchor.BottomLeft, Pivot.TopLeft)
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{ IsFixedSize = false }, style: style)
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{
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Enabled = !selectMultiple,
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OnSelected = SelectItem
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};
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currentListBoxParent = FindListBoxParent();
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currentListBoxParent.GUIComponent.OnAddedToGUIUpdateList += AddListBoxToGUIUpdateList;
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rectT.ParentChanged += (RectTransform newParent) =>
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{
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currentListBoxParent.GUIComponent.OnAddedToGUIUpdateList -= AddListBoxToGUIUpdateList;
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if (newParent != null)
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{
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currentListBoxParent = FindListBoxParent();
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currentListBoxParent.GUIComponent.OnAddedToGUIUpdateList += AddListBoxToGUIUpdateList;
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}
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};
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}
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/// <summary>
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/// Finds the component after which the listbox should be drawn. Usually the parent of the dropdown, but if the dropdown
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/// is the child of another GUIListBox, we need to draw our listbox after that because listboxes clip everything outside their rect.
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/// </summary>
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private RectTransform FindListBoxParent()
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{
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parentHierarchy.Clear();
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parentHierarchy = new List<RectTransform>() { RectTransform.Parent };
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while (parentHierarchy.Last().Parent != null)
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{
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parentHierarchy.Add(parentHierarchy.Last().Parent);
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}
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//find the parent GUIListBox highest in the hierarchy
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for (int i = parentHierarchy.Count - 1; i >= 0; i--)
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{
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if (parentHierarchy[i].GUIComponent is GUIListBox) return parentHierarchy[i];
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}
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//or just go with the direct parent if there are no listboxes in the hierarchy
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parentHierarchy.Clear();
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parentHierarchy.Add(RectTransform.Parent);
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return RectTransform.Parent;
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}
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public void AddItem(string text, object userData = null, string toolTip = "")
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{
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if (selectMultiple)
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{
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var frame = new GUIFrame(new RectTransform(new Point(button.Rect.Width, button.Rect.Height), listBox.Content.RectTransform)
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{ IsFixedSize = false }, style: "ListBoxElement")
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{
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UserData = userData,
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ToolTip = toolTip
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};
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new GUITickBox(new RectTransform(new Point((int)(button.Rect.Height * 0.8f)), frame.RectTransform, anchor: Anchor.CenterLeft), text)
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{
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UserData = userData,
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ToolTip = toolTip,
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OnSelected = (GUITickBox tb) =>
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{
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List<string> texts = new List<string>();
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selectedDataMultiple.Clear();
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selectedIndexMultiple.Clear();
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int i = 0;
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foreach (GUIComponent child in ListBox.Content.Children)
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{
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var tickBox = child.GetChild<GUITickBox>();
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if (tickBox.Selected)
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{
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selectedDataMultiple.Add(child.UserData);
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selectedIndexMultiple.Add(i);
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texts.Add(tickBox.Text);
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}
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i++;
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}
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button.Text = string.Join(", ", texts);
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OnSelected?.Invoke(tb.Parent, tb.Parent.UserData);
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return true;
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}
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};
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}
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else
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{
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new GUITextBlock(new RectTransform(new Point(button.Rect.Width, button.Rect.Height), listBox.Content.RectTransform)
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{ IsFixedSize = false }, text, style: "ListBoxElement")
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{
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UserData = userData,
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ToolTip = toolTip
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};
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}
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}
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public override void ClearChildren()
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{
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listBox.ClearChildren();
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}
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public IEnumerable<GUIComponent> GetChildren()
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{
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return listBox.Content.Children;
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}
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private bool SelectItem(GUIComponent component, object obj)
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{
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if (selectMultiple)
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{
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foreach (GUIComponent child in ListBox.Content.Children)
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{
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var tickBox = child.GetChild<GUITickBox>();
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if (obj == child.UserData) { tickBox.Selected = true; }
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}
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}
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else
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{
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GUITextBlock textBlock = component as GUITextBlock;
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if (textBlock == null)
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{
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textBlock = component.GetChild<GUITextBlock>();
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if (textBlock == null) return false;
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}
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button.Text = textBlock.Text;
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}
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Dropped = false;
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OnSelected?.Invoke(component, component.UserData);
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return true;
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}
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public void SelectItem(object userData)
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{
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if (selectMultiple)
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{
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SelectItem(listBox.Content.FindChild(userData), userData);
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}
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else
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{
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listBox.Select(userData);
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}
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}
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public void Select(int index)
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{
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if (selectMultiple)
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{
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var child = listBox.Content.GetChild(index);
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if (child != null)
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{
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SelectItem(null, child.UserData);
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}
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}
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else
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{
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listBox.Select(index);
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}
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}
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private bool wasOpened;
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private bool OnClicked(GUIComponent component, object obj)
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{
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if (wasOpened) return false;
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wasOpened = true;
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Dropped = !Dropped;
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if (Dropped && Enabled)
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{
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OnDropped?.Invoke(this, userData);
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listBox.UpdateScrollBarSize();
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}
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return true;
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}
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private void AddListBoxToGUIUpdateList(GUIComponent parent)
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{
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//the parent is not our parent anymore :(
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//can happen when subscribed to a parent higher in the hierarchy (instead of the direct parent),
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//and somewhere between this component and the higher parent a component was removed
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for (int i = 1; i < parentHierarchy.Count; i++)
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{
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if (!parentHierarchy[i].IsParentOf(parentHierarchy[i - 1], recursive: false))
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{
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parent.OnAddedToGUIUpdateList -= AddListBoxToGUIUpdateList;
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return;
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}
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}
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if (Dropped)
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{
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listBox.AddToGUIUpdateList(false, UpdateOrder);
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}
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}
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public override void DrawManually(SpriteBatch spriteBatch, bool alsoChildren = false, bool recursive = true)
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{
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if (!Visible) return;
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AutoDraw = false;
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Draw(spriteBatch);
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if (alsoChildren)
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{
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button.DrawManually(spriteBatch, alsoChildren, recursive);
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}
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}
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public override void AddToGUIUpdateList(bool ignoreChildren = false, int order = 0)
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{
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base.AddToGUIUpdateList(true, order);
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if (!ignoreChildren)
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{
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button.AddToGUIUpdateList(false, order);
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}
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}
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protected override void Update(float deltaTime)
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{
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if (!Visible) return;
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wasOpened = false;
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base.Update(deltaTime);
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if (Dropped && PlayerInput.LeftButtonClicked())
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{
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Rectangle listBoxRect = listBox.Rect;
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if (!listBoxRect.Contains(PlayerInput.MousePosition) && !button.Rect.Contains(PlayerInput.MousePosition))
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{
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Dropped = false;
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}
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}
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}
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}
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}
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