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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Diagnostics.Contracts;
using System.Drawing;
using ReClassNET.Extensions;
using ReClassNET.Memory;
using ReClassNET.UI;
using ReClassNET.Util;
namespace ReClassNET.Nodes
{
public delegate void NodeEventHandler(BaseNode sender);
[DebuggerDisplay("{" + nameof(DebuggerDisplay) + ",nq}")]
[ContractClass(typeof(BaseNodeContract))]
public abstract class BaseNode
{
private string DebuggerDisplay => $"Type: {GetType().Name} Name: {Name} Offset: 0x{Offset.ToString("X")}";
internal static readonly List<INodeInfoReader> NodeInfoReader = new List<INodeInfoReader>();
protected static readonly int TextPadding = Icons.Dimensions;
protected static readonly int HiddenHeight = 0;
private static int nodeIndex = 0;
private string name = string.Empty;
private string comment = string.Empty;
/// <summary>Gets or sets the offset of the node.</summary>
public IntPtr Offset { get; set; }
/// <summary>Gets or sets the name of the node. If a new name was set the property changed event gets fired.</summary>
public virtual string Name { get => name; set { if (value != null && name != value) { name = value; NameChanged?.Invoke(this); } } }
/// <summary>Gets or sets the comment of the node.</summary>
public string Comment { get => comment; set { if (value != null && comment != value) { comment = value; CommentChanged?.Invoke(this); } } }
/// <summary>Gets or sets the parent node.</summary>
public BaseNode ParentNode { get; internal set; }
/// <summary>Gets a value indicating whether this node is wrapped into an other node.</summary>
public bool IsWrapped => ParentNode is BaseWrapperNode;
/// <summary>Gets or sets a value indicating whether this node is hidden.</summary>
public bool IsHidden { get; set; }
/// <summary>Gets or sets a value indicating whether this node is selected.</summary>
public bool IsSelected { get; set; }
/// <summary>Size of the node in bytes.</summary>
public abstract int MemorySize { get; }
public event NodeEventHandler NameChanged;
public event NodeEventHandler CommentChanged;
protected GrowingList<bool> LevelsOpen { get; } = new GrowingList<bool>(false);
[ContractInvariantMethod]
private void ObjectInvariants()
{
Contract.Invariant(name != null);
Contract.Invariant(comment != null);
Contract.Invariant(Offset.ToInt32() >= 0);
Contract.Invariant(LevelsOpen != null);
}
/// <summary>
/// Creates an instance of the specific node type.
/// </summary>
/// <param name="nodeType">The <see cref="Type"/> of the node.</param>
/// <returns>An instance of the node type or null if the type is not a valid node type.</returns>
public static BaseNode CreateInstanceFromType(Type nodeType)
{
return CreateInstanceFromType(nodeType, true);
}
/// <summary>
/// Creates an instance of the specific node type.
/// </summary>
/// <param name="nodeType">The <see cref="Type"/> of the node.</param>
/// <param name="callInitialize">If true <see cref="Initialize"/> gets called for the new node.</param>
/// <returns>An instance of the node type or null if the type is not a valid node type.</returns>
public static BaseNode CreateInstanceFromType(Type nodeType, bool callInitialize)
{
var node = Activator.CreateInstance(nodeType) as BaseNode;
if (callInitialize)
{
node?.Initialize();
}
return node;
}
/// <summary>Constructor which sets a unique <see cref="Name"/>.</summary>
protected BaseNode()
{
Contract.Ensures(name != null);
Contract.Ensures(comment != null);
Name = $"N{nodeIndex++:X08}";
Comment = string.Empty;
LevelsOpen[0] = true;
}
public abstract void GetUserInterfaceInfo(out string name, out Image icon);
public virtual bool UseMemoryPreviewToolTip(HotSpot spot, MemoryBuffer memory, out IntPtr address)
{
Contract.Requires(spot != null);
Contract.Requires(memory != null);
address = IntPtr.Zero;
return false;
}
/// <summary>Gets informations about this node to show in a tool tip.</summary>
/// <param name="spot">The spot.</param>
/// <param name="memory">The process memory.</param>
/// <returns>The information to show in a tool tip or null if no information should be shown.</returns>
public virtual string GetToolTipText(HotSpot spot, MemoryBuffer memory)
{
Contract.Requires(spot != null);
Contract.Requires(memory != null);
return null;
}
/// <summary>Called when the node was created. Does not get called after loading a project.</summary>
public virtual void Initialize()
{
}
/// <summary>Initializes this object from the given node. It copies the name and the comment.</summary>
/// <param name="node">The node to copy from.</param>
public virtual void CopyFromNode(BaseNode node)
{
Contract.Requires(node != null);
Name = node.Name;
Comment = node.Comment;
Offset = node.Offset;
}
/// <summary>
/// Gets the parent container of the node.
/// </summary>
/// <returns></returns>
public BaseContainerNode GetParentContainer()
{
var parentNode = ParentNode;
while (parentNode != null)
{
if (parentNode is BaseContainerNode containerNode)
{
return containerNode;
}
parentNode = parentNode.ParentNode;
}
if (this is BaseContainerNode containerNode2)
{
return containerNode2;
}
return null;
}
/// <summary>
/// Gets the parent class of the node.
/// </summary>
/// <returns></returns>
public ClassNode GetParentClass()
{
var parentNode = ParentNode;
while (parentNode != null)
{
if (parentNode is ClassNode classNode)
{
return classNode;
}
parentNode = parentNode.ParentNode;
}
return null;
}
/// <summary>
/// Gets the root wrapper node if this node is the inner node of a wrapper chain.
/// </summary>
/// <returns>The root <see cref="BaseWrapperNode"/> or null if this node is not wrapped or isn't itself a wrapper node.</returns>
public BaseWrapperNode GetRootWrapperNode()
{
BaseWrapperNode rootWrapperNode = null;
var parentNode = ParentNode;
while (parentNode is BaseWrapperNode wrapperNode)
{
rootWrapperNode = wrapperNode;
parentNode = parentNode.ParentNode;
}
// Test if this node is the root wrapper node.
if (rootWrapperNode == null)
{
if (this is BaseWrapperNode wrapperNode)
{
return wrapperNode;
}
}
return rootWrapperNode;
}
/// <summary>Clears the selection of the node.</summary>
public virtual void ClearSelection()
{
IsSelected = false;
}
/// <summary>Draws the node.</summary>
/// <param name="view">The view information.</param>
/// <param name="x">The x coordinate.</param>
/// <param name="y">The y coordinate.</param>
/// <returns>The pixel size the node occupies.</returns>
public abstract Size Draw(ViewInfo view, int x, int y);
/// <summary>
/// Calculates the height of the node if drawn.
/// This method is used to determine if a node outside the visible area should be drawn.
/// The returned height must be equal to the height which is returned by the <see cref="Draw(ViewInfo, int, int)"/> method.
/// </summary>
/// <param name="view">The view information.</param>
/// <returns>The calculated height.</returns>
public abstract int CalculateDrawnHeight(ViewInfo view);
/// <summary>Updates the node from the given <paramref name="spot"/>. Sets the <see cref="Name"/> and <see cref="Comment"/> of the node.</summary>
/// <param name="spot">The spot.</param>
public virtual void Update(HotSpot spot)
{
Contract.Requires(spot != null);
if (spot.Id == HotSpot.NameId)
{
Name = spot.Text;
}
else if (spot.Id == HotSpot.CommentId)
{
Comment = spot.Text;
}
}
/// <summary>Toggles the specified level.</summary>
/// <param name="level">The level to toggle.</param>
internal void ToggleLevelOpen(int level)
{
LevelsOpen[level] = !LevelsOpen[level];
}
/// <summary>Sets the specific level.</summary>
/// <param name="level">The level to set.</param>
/// <param name="open">True to open.</param>
internal void SetLevelOpen(int level, bool open)
{
LevelsOpen[level] = open;
}
/// <summary>Adds a <see cref="HotSpot"/> the user can interact with.</summary>
/// <param name="view">The view information.</param>
/// <param name="spot">The spot.</param>
/// <param name="text">The text to edit.</param>
/// <param name="id">The id of the spot.</param>
/// <param name="type">The type of the spot.</param>
protected void AddHotSpot(ViewInfo view, Rectangle spot, string text, int id, HotSpotType type)
{
Contract.Requires(view != null);
Contract.Requires(view.Memory != null);
Contract.Requires(text != null);
if (spot.Top > view.ClientArea.Bottom || spot.Bottom < 0)
{
return;
}
view.HotSpots.Add(new HotSpot
{
Rect = spot,
Text = text,
Address = view.Address.Add(Offset),
Id = id,
Type = type,
Node = this,
Level = view.Level,
Memory = view.Memory
});
}
/// <summary>Draws the specific text and adds a <see cref="HotSpot"/> if <paramref name="hitId"/> is not <see cref="HotSpot.NoneId"/>.</summary>
/// <param name="view">The view information.</param>
/// <param name="x">The x coordinate.</param>
/// <param name="y">The y coordinate.</param>
/// <param name="color">The color of the text.</param>
/// <param name="hitId">Id for the clickable area.</param>
/// <param name="text">The text to draw.</param>
/// <returns>The new x coordinate after drawing the text.</returns>
protected int AddText(ViewInfo view, int x, int y, Color color, int hitId, string text)
{
Contract.Requires(view != null);
Contract.Requires(view.Context != null);
Contract.Requires(view.Font != null);
Contract.Requires(text != null);
var width = Math.Max(text.Length, hitId != HotSpot.NoneId ? 1 : 0) * view.Font.Width;
if (y >= -view.Font.Height && y + view.Font.Height <= view.ClientArea.Bottom + view.Font.Height)
{
if (hitId != HotSpot.NoneId)
{
var rect = new Rectangle(x, y, width, view.Font.Height);
AddHotSpot(view, rect, text, hitId, HotSpotType.Edit);
}
view.Context.DrawStringEx(text, view.Font.Font, color, x, y);
/*using (var brush = new SolidBrush(color))
{
view.Context.DrawString(text, view.Font.Font, brush, x, y);
}*/
}
return x + width;
}
/// <summary>Draws the address and <see cref="Offset"/> of the node.</summary>
/// <param name="view">The view information.</param>
/// <param name="x">The x coordinate.</param>
/// <param name="y">The y coordinate.</param>
/// <returns>The new x coordinate after drawing the text.</returns>
protected int AddAddressOffset(ViewInfo view, int x, int y)
{
Contract.Requires(view != null);
Contract.Requires(view.Context != null);
Contract.Requires(view.Font != null);
if (view.Settings.ShowNodeOffset)
{
x = AddText(view, x, y, view.Settings.OffsetColor, HotSpot.NoneId, $"{Offset.ToInt32():X04}") + view.Font.Width;
}
if (view.Settings.ShowNodeAddress)
{
x = AddText(view, x, y, view.Settings.AddressColor, HotSpot.AddressId, view.Address.Add(Offset).ToString(Constants.AddressHexFormat)) + view.Font.Width;
}
return x;
}
/// <summary>Draws a bar which indicates the selection status of the node. A <see cref="HotSpot"/> for this area gets added too.</summary>
/// <param name="view">The view information.</param>
/// <param name="x">The x coordinate.</param>
/// <param name="y">The y coordinate.</param>
/// <param name="height">The height of the bar.</param>
protected void AddSelection(ViewInfo view, int x, int y, int height)
{
Contract.Requires(view != null);
Contract.Requires(view.Context != null);
if (y > view.ClientArea.Bottom || y + height < 0 || IsWrapped)
{
return;
}
if (IsSelected)
{
using (var brush = new SolidBrush(view.Settings.SelectedColor))
{
view.Context.FillRectangle(brush, 0, y, view.ClientArea.Right, height);
}
}
AddHotSpot(view, new Rectangle(0, y, view.ClientArea.Right - (IsSelected ? 16 : 0), height), string.Empty, HotSpot.NoneId, HotSpotType.Select);
}
/// <summary>Draws an icon and adds a <see cref="HotSpot"/> if <paramref name="id"/> is not <see cref="HotSpot.NoneId"/>.</summary>
/// <param name="view">The view information.</param>
/// <param name="x">The x coordinate.</param>
/// <param name="y">The y coordinate.</param>
/// <param name="icon">The icon.</param>
/// <param name="id">The id of the spot.</param>
/// <param name="type">The type of the spot.</param>
/// <returns>The new x coordinate after drawing the icon.</returns>
protected int AddIcon(ViewInfo view, int x, int y, Image icon, int id, HotSpotType type)
{
Contract.Requires(view != null);
Contract.Requires(view.Context != null);
Contract.Requires(icon != null);
if (y > view.ClientArea.Bottom || y + Icons.Dimensions < 0)
{
return x + Icons.Dimensions;
}
view.Context.DrawImage(icon, x + 2, y, Icons.Dimensions, Icons.Dimensions);
if (id != HotSpot.NoneId)
{
AddHotSpot(view, new Rectangle(x, y, Icons.Dimensions, Icons.Dimensions), string.Empty, id, type);
}
return x + Icons.Dimensions;
}
/// <summary>Adds a togglable Open/Close icon.</summary>
/// <param name="view">The view information.</param>
/// <param name="x">The x coordinate.</param>
/// <param name="y">The y coordinate.</param>
/// <returns>The new x coordinate after drawing the icon.</returns>
protected int AddOpenClose(ViewInfo view, int x, int y)
{
Contract.Requires(view != null);
Contract.Requires(view.Context != null);
if (y > view.ClientArea.Bottom || y + Icons.Dimensions < 0)
{
return x + Icons.Dimensions;
}
return AddIcon(view, x, y, LevelsOpen[view.Level] ? Icons.OpenCloseOpen : Icons.OpenCloseClosed, 0, HotSpotType.OpenClose);
}
/// <summary>Draws a type drop icon if the node is selected.</summary>
/// <param name="view">The view information.</param>
/// <param name="y">The y coordinate.</param>
protected void AddTypeDrop(ViewInfo view, int y)
{
Contract.Requires(view != null);
Contract.Requires(view.Context != null);
if (view.MultipleNodesSelected || y > view.ClientArea.Bottom || y + Icons.Dimensions < 0 || IsWrapped)
{
return;
}
if (IsSelected)
{
AddIcon(view, 0, y, Icons.DropArrow, 0, HotSpotType.Drop);
}
}
/// <summary>Draws a delete icon if the node is selected.</summary>
/// <param name="view">The view information.</param>
/// <param name="y">The y coordinate.</param>
protected void AddDelete(ViewInfo view, int y)
{
Contract.Requires(view != null);
Contract.Requires(view.Context != null);
if (y > view.ClientArea.Bottom || y + Icons.Dimensions < 0 || IsWrapped)
{
return;
}
if (IsSelected)
{
AddIcon(view, view.ClientArea.Right - Icons.Dimensions, y, Icons.Delete, 0, HotSpotType.Delete);
}
}
/// <summary>Draws the <see cref="Comment"/>.</summary>
/// <param name="view">The view information.</param>
/// <param name="x">The x coordinate.</param>
/// <param name="y">The y coordinate.</param>
/// <returns>The new x coordinate after drawing the comment.</returns>
protected virtual int AddComment(ViewInfo view, int x, int y)
{
Contract.Requires(view != null);
Contract.Requires(view.Context != null);
Contract.Requires(view.Font != null);
x = AddText(view, x, y, view.Settings.CommentColor, HotSpot.NoneId, "//");
x = AddText(view, x, y, view.Settings.CommentColor, HotSpot.CommentId, Comment) + view.Font.Width;
return x;
}
/// <summary>Draws a vertical line to show the hidden state.</summary>
/// <param name="view">The view information.</param>
/// <param name="x">The x coordinate.</param>
/// <param name="y">The y coordinate.</param>
/// <returns>The size of the drawing.</returns>
protected Size DrawHidden(ViewInfo view, int x, int y)
{
Contract.Requires(view != null);
Contract.Requires(view.Context != null);
using (var brush = new SolidBrush(IsSelected ? view.Settings.SelectedColor : view.Settings.HiddenColor))
{
view.Context.FillRectangle(brush, 0, y, view.ClientArea.Right, 1);
}
return new Size(0, HiddenHeight);
}
/// <summary>Draws an error indicator if the used memory buffer is not valid.</summary>
/// <param name="view">The view information.</param>
/// <param name="y">The y coordinate.</param>
protected void DrawInvalidMemoryIndicator(ViewInfo view, int y)
{
if (!view.Memory.ContainsValidData)
{
AddIcon(view, 0, y, Properties.Resources.B16x16_Error, -1, HotSpotType.None);
}
}
}
[ContractClassFor(typeof(BaseNode))]
internal abstract class BaseNodeContract : BaseNode
{
public override int MemorySize
{
get
{
Contract.Ensures(Contract.Result<int>() >= 0);
throw new NotImplementedException();
}
}
public override Size Draw(ViewInfo view, int x, int y)
{
Contract.Requires(view != null);
throw new NotImplementedException();
}
public override int CalculateDrawnHeight(ViewInfo view)
{
Contract.Requires(view != null);
throw new NotImplementedException();
}
}
}