297 lines
9.8 KiB
C#
297 lines
9.8 KiB
C#
|
using System;
|
||
|
|
using System.Collections.Generic;
|
||
|
|
using System.Runtime.InteropServices;
|
||
|
|
using Rive.Utils;
|
||
|
|
|
||
|
|
namespace Rive
|
||
|
|
{
|
||
|
|
/// <summary>
|
||
|
|
/// A view model instance property that holds a list of view model instances.
|
||
|
|
/// </summary>
|
||
|
|
public sealed class ViewModelInstanceListProperty : ViewModelInstancePrimitiveProperty
|
||
|
|
{
|
||
|
|
|
||
|
|
internal ViewModelInstanceListProperty(IntPtr instanceValuePtr, ViewModelInstance rootInstance)
|
||
|
|
: base(instanceValuePtr, rootInstance)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
/// <summary>
|
||
|
|
/// The number of items in the list.
|
||
|
|
/// </summary>
|
||
|
|
public int Count
|
||
|
|
{
|
||
|
|
get
|
||
|
|
{
|
||
|
|
ThrowIfOwnerDisposed();
|
||
|
|
|
||
|
|
if (InstancePropertyPtr == IntPtr.Zero)
|
||
|
|
{
|
||
|
|
DebugLogger.Instance.LogWarning("Trying to get length of a null list property.");
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
return (int)getViewModelInstanceListSize(InstancePropertyPtr);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/// <summary>
|
||
|
|
/// Gets the view model instance at the specified index.
|
||
|
|
/// </summary>
|
||
|
|
/// <param name="index">The index of the item to get.</param>
|
||
|
|
/// <returns>The view model instance at the specified index, or null if the index is out of bounds.</returns>
|
||
|
|
public ViewModelInstance GetInstanceAt(int index)
|
||
|
|
{
|
||
|
|
ThrowIfOwnerDisposed();
|
||
|
|
|
||
|
|
if (InstancePropertyPtr == IntPtr.Zero)
|
||
|
|
{
|
||
|
|
DebugLogger.Instance.LogError("Trying to get item from a null list property.");
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (index < 0 || index >= Count)
|
||
|
|
{
|
||
|
|
DebugLogger.Instance.LogError($"Index {index} is out of bounds for list of length {Count}.");
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
IntPtr instancePtr = getViewModelInstanceListItemAt(InstancePropertyPtr, index);
|
||
|
|
if (instancePtr == IntPtr.Zero)
|
||
|
|
{
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
ViewModelInstance vmi = GetOrCreateVMInstanceFromPtr(instancePtr);
|
||
|
|
|
||
|
|
return vmi;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
private ViewModelInstance GetOrCreateVMInstanceFromPtr(IntPtr instancePtr)
|
||
|
|
{
|
||
|
|
if (instancePtr == IntPtr.Zero)
|
||
|
|
{
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
return ViewModelInstance.GetOrCreateFromPointer(instancePtr, this.RootInstance?.RiveFile, this.RootInstance);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/// <summary>
|
||
|
|
/// Adds a view model instance to the end of the list.
|
||
|
|
/// </summary>
|
||
|
|
/// <param name="instance">The view model instance to add.</param>
|
||
|
|
public void Add(ViewModelInstance instance)
|
||
|
|
{
|
||
|
|
ThrowIfOwnerDisposed();
|
||
|
|
|
||
|
|
if (InstancePropertyPtr == IntPtr.Zero)
|
||
|
|
{
|
||
|
|
DebugLogger.Instance.LogError("Trying to add to a null list property.");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (instance == null || instance.NativeSafeHandle.IsInvalid)
|
||
|
|
{
|
||
|
|
DebugLogger.Instance.LogError("Cannot add null or invalid view model instance to list.");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
addViewModelInstanceToList(InstancePropertyPtr, instance.NativeSafeHandle.DangerousGetHandle());
|
||
|
|
|
||
|
|
instance.AddParent(this.RootInstance);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
/// <summary>
|
||
|
|
/// Inserts a view model instance at the specified index.
|
||
|
|
/// </summary>
|
||
|
|
/// <param name="instance">The view model instance to insert.</param>
|
||
|
|
/// <param name="index">The index at which to insert the instance.</param>
|
||
|
|
public void Insert(ViewModelInstance instance, int index)
|
||
|
|
{
|
||
|
|
ThrowIfOwnerDisposed();
|
||
|
|
|
||
|
|
if (instance == null)
|
||
|
|
{
|
||
|
|
DebugLogger.Instance.LogError("Cannot insert null or invalid view model instance into list.");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (InstancePropertyPtr == IntPtr.Zero)
|
||
|
|
{
|
||
|
|
DebugLogger.Instance.LogError("Trying to insert into a null list property.");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (index < 0)
|
||
|
|
{
|
||
|
|
DebugLogger.Instance.LogError($"Index {index} is out of bounds for list of length {Count}.");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!addViewModelInstanceToListAt(InstancePropertyPtr, instance.NativeSafeHandle.DangerousGetHandle(), index))
|
||
|
|
{
|
||
|
|
DebugLogger.Instance.LogError($"Failed to insert view model instance at index {index}.");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
instance.AddParent(this.RootInstance);
|
||
|
|
}
|
||
|
|
|
||
|
|
/// <summary>
|
||
|
|
/// Removes a view model instance from the list.
|
||
|
|
/// </summary>
|
||
|
|
/// <param name="instance">The view model instance to remove.</param>
|
||
|
|
/// <remarks>
|
||
|
|
/// This method will remove every occurrence of the instance from the list.
|
||
|
|
/// </remarks>
|
||
|
|
public void Remove(ViewModelInstance instance)
|
||
|
|
{
|
||
|
|
ThrowIfOwnerDisposed();
|
||
|
|
|
||
|
|
if (InstancePropertyPtr == IntPtr.Zero)
|
||
|
|
{
|
||
|
|
DebugLogger.Instance.LogError("Trying to remove from a null list property.");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (instance == null || instance.NativeSafeHandle.IsInvalid)
|
||
|
|
{
|
||
|
|
DebugLogger.Instance.LogError("Cannot remove null or invalid view model instance from list.");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
removeViewModelInstanceFromList(InstancePropertyPtr, instance.NativeSafeHandle.DangerousGetHandle());
|
||
|
|
|
||
|
|
instance.RemoveParent(this.RootInstance);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
/// <summary>
|
||
|
|
/// Removes the view model instance at the specified index.
|
||
|
|
/// </summary>
|
||
|
|
/// <param name="index">The index of the item to remove.</param>
|
||
|
|
public void RemoveAt(int index)
|
||
|
|
{
|
||
|
|
ThrowIfOwnerDisposed();
|
||
|
|
|
||
|
|
if (InstancePropertyPtr == IntPtr.Zero)
|
||
|
|
{
|
||
|
|
DebugLogger.Instance.LogError("Trying to remove from a null list property.");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (index < 0 || index >= Count)
|
||
|
|
{
|
||
|
|
DebugLogger.Instance.LogError($"Index {index} is out of bounds for list of length {Count}.");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
ViewModelInstance instance = GetInstanceAt(index);
|
||
|
|
if (instance == null)
|
||
|
|
{
|
||
|
|
DebugLogger.Instance.LogError($"No instance found at index {index}.");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
removeViewModelInstanceFromListAt(InstancePropertyPtr, index);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
/// <summary>
|
||
|
|
/// Swaps the view model instances at the specified indices.
|
||
|
|
/// </summary>
|
||
|
|
/// <param name="indexA">The index of the first item to swap.</param>
|
||
|
|
/// <param name="indexB">The index of the second item to swap.</param>
|
||
|
|
public void Swap(int indexA, int indexB)
|
||
|
|
{
|
||
|
|
ThrowIfOwnerDisposed();
|
||
|
|
|
||
|
|
if (InstancePropertyPtr == IntPtr.Zero)
|
||
|
|
{
|
||
|
|
DebugLogger.Instance.LogError("Trying to swap instances in a null list property.");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (indexA == indexB)
|
||
|
|
{
|
||
|
|
DebugLogger.Instance.LogError("Cannot swap instances at the same index.");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (indexA < 0 || indexA >= Count)
|
||
|
|
{
|
||
|
|
DebugLogger.Instance.LogError($"Index {indexA} is out of bounds for list of length {Count}.");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (indexB < 0 || indexB >= Count)
|
||
|
|
{
|
||
|
|
DebugLogger.Instance.LogError($"Index {indexB} is out of bounds for list of length {Count}.");
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
swapViewModelInstancesInList(InstancePropertyPtr, indexA, indexB);
|
||
|
|
}
|
||
|
|
|
||
|
|
/// <summary>
|
||
|
|
/// Called when the list property value changes.
|
||
|
|
/// </summary>
|
||
|
|
internal override void RaiseChangedEvent()
|
||
|
|
{
|
||
|
|
// List changes don't have a specific value, just notify that the list changed
|
||
|
|
m_onTriggered?.Invoke();
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/// <summary>
|
||
|
|
/// Event that is raised when the list changes.
|
||
|
|
/// </summary>
|
||
|
|
public event Action OnChanged
|
||
|
|
{
|
||
|
|
add => AddPropertyCallback(value, ref m_onTriggered);
|
||
|
|
remove => RemovePropertyCallback(value, ref m_onTriggered);
|
||
|
|
}
|
||
|
|
private Action m_onTriggered;
|
||
|
|
|
||
|
|
|
||
|
|
/// <summary>
|
||
|
|
/// Clears all callbacks registered with this property.
|
||
|
|
/// </summary>
|
||
|
|
internal override void ClearAllCallbacks()
|
||
|
|
{
|
||
|
|
m_onTriggered = null;
|
||
|
|
base.ClearAllCallbacks();
|
||
|
|
}
|
||
|
|
|
||
|
|
internal override void ClearDelegatesOnly()
|
||
|
|
{
|
||
|
|
m_onTriggered = null;
|
||
|
|
}
|
||
|
|
|
||
|
|
[DllImport(NativeLibrary.name)]
|
||
|
|
private static extern nuint getViewModelInstanceListSize(IntPtr listProperty);
|
||
|
|
|
||
|
|
[DllImport(NativeLibrary.name)]
|
||
|
|
private static extern IntPtr getViewModelInstanceListItemAt(IntPtr listProperty, int index);
|
||
|
|
|
||
|
|
[DllImport(NativeLibrary.name)]
|
||
|
|
private static extern void addViewModelInstanceToList(IntPtr listProperty, IntPtr instance);
|
||
|
|
|
||
|
|
[DllImport(NativeLibrary.name)]
|
||
|
|
private static extern bool addViewModelInstanceToListAt(IntPtr listProperty, IntPtr instance, int index);
|
||
|
|
|
||
|
|
[DllImport(NativeLibrary.name)]
|
||
|
|
private static extern void removeViewModelInstanceFromList(IntPtr listProperty, IntPtr instance);
|
||
|
|
|
||
|
|
[DllImport(NativeLibrary.name)]
|
||
|
|
private static extern void removeViewModelInstanceFromListAt(IntPtr listProperty, int index);
|
||
|
|
|
||
|
|
[DllImport(NativeLibrary.name)]
|
||
|
|
private static extern void swapViewModelInstancesInList(IntPtr listProperty, int indexA, int indexB);
|
||
|
|
}
|
||
|
|
}
|