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Delete PageHandler.cs

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Sinai 2021-04-16 23:59:58 +10:00
parent 7cb4faa596
commit 876cffd864
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src/UI/Widgets/PageHandler.cs
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using System;
using System.Collections;
using System.Collections.Generic;
using UnityExplorer.Core.Config;
using UnityEngine;
using UnityEngine.UI;
using UnityExplorer.UI.Utility;
namespace UnityExplorer.UI.Models
{
public enum Turn
{
Left,
Right
}
public class PageHandler : UIModel, IEnumerator
{
public PageHandler(SliderScrollbar scroll)
{
ItemsPerPage = ConfigManager.Default_Page_Limit?.Value ?? 20;
m_scrollbar = scroll;
}
public event Action OnPageChanged;
// UI members
private readonly SliderScrollbar m_scrollbar;
private GameObject m_pageUIHolder;
private Text m_currentPageLabel;
public override GameObject UIRoot => m_pageUIHolder;
// For now this is just set when the PageHandler is created, based on config.
// At some point I might make it possible to change this after creation again.
public int ItemsPerPage { get; }
// IEnumerator.Current
public object Current => m_currentIndex;
private int m_currentIndex = 0;
public int CurrentPage
{
get => m_currentPage;
set
{
if (value < PageCount)
m_currentPage = value;
}
}
private int m_currentPage;
// set and maintained by owner of list
private int m_listCount;
public int ListCount
{
get => m_listCount;
set
{
m_listCount = value;
if (PageCount <= 0 && m_pageUIHolder.activeSelf)
{
m_pageUIHolder.SetActive(false);
}
else if (PageCount > 0 && !m_pageUIHolder.activeSelf)
{
m_pageUIHolder.SetActive(true);
}
RefreshUI();
}
}
public int PageCount => (int)Math.Ceiling(ListCount / (decimal)ItemsPerPage) - 1;
// The index of the first element of the current page
public int StartIndex
{
get
{
int offset = m_currentPage * ItemsPerPage;
if (offset >= ListCount)
{
offset = 0;
m_currentPage = 0;
}
return offset;
}
}
public int EndIndex
{
get
{
int end = StartIndex + ItemsPerPage;
if (end >= ListCount)
end = ListCount - 1;
return end;
}
}
// IEnumerator.MoveNext()
public bool MoveNext()
{
m_currentIndex++;
return m_currentIndex < StartIndex + ItemsPerPage;
}
// IEnumerator.Reset()
public void Reset()
{
m_currentIndex = StartIndex - 1;
}
public IEnumerator<int> GetEnumerator()
{
Reset();
while (MoveNext())
{
yield return m_currentIndex;
}
}
public void TurnPage(Turn direction)
{
bool didTurn = false;
if (direction == Turn.Left)
{
if (m_currentPage > 0)
{
m_currentPage--;
didTurn = true;
}
}
else
{
if (m_currentPage < PageCount)
{
m_currentPage++;
didTurn = true;
}
}
if (didTurn)
{
if (m_scrollbar != null)
m_scrollbar.m_scrollbar.value = 1;
OnPageChanged?.Invoke();
RefreshUI();
}
}
public void Show() => m_pageUIHolder?.SetActive(true);
public void Hide() => m_pageUIHolder?.SetActive(false);
public void RefreshUI()
{
m_currentPageLabel.text = $"Page {CurrentPage + 1} / {CurrentPage + 1}";
// TODO
}
public override void ConstructUI(GameObject parent)
{
m_pageUIHolder = UIFactory.CreateHorizontalGroup(parent, "PageHandlerButtons", false, true, true, true);
Image image = m_pageUIHolder.GetComponent<Image>();
image.color = new Color(0.2f, 0.2f, 0.2f, 0.5f);
UIFactory.SetLayoutElement(m_pageUIHolder, minHeight: 25, minWidth: 100, flexibleWidth: 5000);
var leftBtnObj = UIFactory.CreateButton(m_pageUIHolder,
"BackBtn",
"◄",
() => { TurnPage(Turn.Left); },
new Color(0.15f, 0.15f, 0.15f));
UIFactory.SetLayoutElement(leftBtnObj.gameObject, flexibleWidth: 1500, minWidth: 25, minHeight: 25);
m_currentPageLabel = UIFactory.CreateLabel(m_pageUIHolder, "PageLabel", "Page 1 / TODO", TextAnchor.MiddleCenter);
UIFactory.SetLayoutElement(m_currentPageLabel.gameObject, minWidth: 100, flexibleWidth: 40);
Button rightBtn = UIFactory.CreateButton(m_pageUIHolder,
"RightBtn",
"►",
() => { TurnPage(Turn.Right); },
new Color(0.15f, 0.15f, 0.15f));
UIFactory.SetLayoutElement(rightBtn.gameObject, flexibleWidth: 1500, minWidth: 25, minHeight: 25);
ListCount = 0;
}
}
}