140 lines
4.1 KiB
C#
140 lines
4.1 KiB
C#
using System.Collections.Generic;
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/// Credit Brogan King (@BroganKing)
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/// Original Sourced from - https://bitbucket.org/UnityUIExtensions/unity-ui-extensions/issues/158/pagination-script
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using System.Linq;
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namespace UnityEngine.UI.Extensions
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{
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[AddComponentMenu("UI/Extensions/Pagination Manager")]
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public class PaginationManager : ToggleGroup
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{
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private List<Toggle> m_PaginationChildren;
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[SerializeField]
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private ScrollSnapBase scrollSnap = null;
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private bool isAClick;
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public int CurrentPage
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{
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get { return scrollSnap.CurrentPage; }
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}
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protected PaginationManager()
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{ }
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// Use this for initialization
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protected override void Start()
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{
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base.Start();
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if (scrollSnap == null)
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{
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Debug.LogError("A ScrollSnap script must be attached");
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return;
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}
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// do not want the scroll snap pagination
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if (scrollSnap.Pagination)
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scrollSnap.Pagination = null;
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// set scroll snap listeners
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scrollSnap.OnSelectionPageChangedEvent.AddListener(SetToggleGraphics);
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scrollSnap.OnSelectionChangeEndEvent.AddListener(OnPageChangeEnd);
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ResetPaginationChildren();
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}
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/// <summary>
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/// Remake the internal list of child toggles (m_PaginationChildren).
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/// Used after adding/removing a toggle.
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/// </summary>
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public void ResetPaginationChildren()
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{
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// add selectables to list
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m_PaginationChildren = GetComponentsInChildren<Toggle>().ToList<Toggle>();
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for (int i = 0; i < m_PaginationChildren.Count; i++)
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{
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m_PaginationChildren[i].onValueChanged.AddListener(ToggleClick);
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m_PaginationChildren[i].group = this;
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m_PaginationChildren[i].isOn = false;
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}
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// set toggles on start
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SetToggleGraphics(CurrentPage);
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// warn user that they have uneven amount of pagination toggles to page count
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if (m_PaginationChildren.Count != scrollSnap._scroll_rect.content.childCount)
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Debug.LogWarning("Uneven pagination icon to page count");
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}
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/// <summary>
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/// Calling from other scripts if you need to change screens programmatically
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/// </summary>
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/// <param name="pageNo"></param>
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public void GoToScreen(int pageNo)
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{
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scrollSnap.GoToScreen(pageNo, true);
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}
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/// <summary>
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/// Calls GoToScreen() based on the index of toggle that was pressed
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/// </summary>
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/// <param name="target"></param>
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private void ToggleClick(Toggle target)
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{
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if (!target.isOn)
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{
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isAClick = true;
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GoToScreen(m_PaginationChildren.IndexOf(target));
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}
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}
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private void ToggleClick(bool toggle)
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{
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if (toggle)
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{
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for (int i = 0; i < m_PaginationChildren.Count; i++)
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{
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if (m_PaginationChildren[i].isOn && !scrollSnap._suspendEvents)
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{
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GoToScreen(i);
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break;
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}
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}
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}
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}
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/// <summary>
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/// Calls GoToScreen() based on the index of toggle that was pressed
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/// </summary>
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/// <param name="target"></param>
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private void ToggleClick(int target)
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{
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isAClick = true;
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GoToScreen(target);
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}
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private void SetToggleGraphics(int pageNo)
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{
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if (!isAClick)
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{
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m_PaginationChildren[pageNo].isOn = true;
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//for (int i = 0; i < m_PaginationChildren.Count; i++)
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//{
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// m_PaginationChildren[i].isOn = pageNo == i ? true : false;
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//}
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}
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}
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private void OnPageChangeEnd(int pageNo)
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{
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isAClick = false;
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}
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}
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}
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