96 lines
2.9 KiB
C#
96 lines
2.9 KiB
C#
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using System;
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namespace Gwen.Control
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{
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/// <summary>
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/// Tree control.
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/// </summary>
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public class TreeControl : TreeNode
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{
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private readonly ScrollControl m_ScrollControl;
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private bool m_MultiSelect;
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/// <summary>
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/// Determines if multiple nodes can be selected at the same time.
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/// </summary>
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public bool AllowMultiSelect { get { return m_MultiSelect; } set { m_MultiSelect = value; } }
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/// <summary>
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/// Initializes a new instance of the <see cref="TreeControl"/> class.
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/// </summary>
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/// <param name="parent">Parent control.</param>
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public TreeControl(Base parent)
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: base(parent)
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{
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m_TreeControl = this;
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RemoveChild(m_ToggleButton, true);
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m_ToggleButton = null;
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RemoveChild(m_Title, true);
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m_Title = null;
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RemoveChild(m_InnerPanel, true);
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m_InnerPanel = null;
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m_MultiSelect = false;
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m_ScrollControl = new ScrollControl(this);
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m_ScrollControl.Dock = Pos.Fill;
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m_ScrollControl.EnableScroll(false, true);
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m_ScrollControl.AutoHideBars = true;
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m_ScrollControl.Margin = Margin.One;
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m_InnerPanel = m_ScrollControl;
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m_ScrollControl.SetInnerSize(1000, 1000); // todo: why such arbitrary numbers?
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}
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/// <summary>
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/// Renders the control using specified skin.
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/// </summary>
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/// <param name="skin">Skin to use.</param>
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protected override void Render(Skin.Base skin)
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{
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if (ShouldDrawBackground)
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skin.DrawTreeControl(this);
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}
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/// <summary>
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/// Handler invoked when control children's bounds change.
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/// </summary>
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/// <param name="oldChildBounds"></param>
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/// <param name="child"></param>
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protected override void OnChildBoundsChanged(System.Drawing.Rectangle oldChildBounds, Base child)
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{
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if (m_ScrollControl != null)
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m_ScrollControl.UpdateScrollBars();
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}
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/// <summary>
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/// Removes all child nodes.
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/// </summary>
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public virtual void RemoveAll()
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{
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m_ScrollControl.DeleteAll();
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}
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/// <summary>
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/// Handler for node added event.
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/// </summary>
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/// <param name="node">Node added.</param>
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public virtual void OnNodeAdded(TreeNode node)
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{
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node.LabelPressed += OnNodeSelected;
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}
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/// <summary>
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/// Handler for node selected event.
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/// </summary>
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/// <param name="Control">Node selected.</param>
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protected virtual void OnNodeSelected(Base Control)
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{
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if (!m_MultiSelect /*|| InputHandler.InputHandler.IsKeyDown(Key.Control)*/)
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UnselectAll();
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}
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}
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}
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