/// <summary>
/// 一つ前の階層に戻ることを試みます。
/// </summary>
/// <returns>戻る処理が成功したかどうかを表す値</returns>
public bool Back()
{
if (currentParent.Parent is null)
{
return(false);
}
else
{
currentParent = currentParent.Parent;
BuildLayout(currentParent);
return(true);
}
}
private void ButtonRelativeLayout_Click(object sender, EventArgs e)
{
var clickedLayout = (RelativeLayout)sender;
var clickedButton = buttonDictionary[clickedLayout.Id];
var args = new HierarchyButtonClickEventArgs();
clickedButton.OnClick(args);
currentParent = args.NextCurrentHierarchyButton ?? currentParent;
if (args.LayoutChanged)
{
BuildLayout(currentParent);
}
}
private ViewGroup CreateRelativeLayoutButton(HierarchyButton hierarchyButton)
{
var buttonRelativeLayout = hierarchyButton.GetView(context, out var isCache);
if (!isCache)
{
buttonRelativeLayout.SetPadding(50, 0, 50, 0);
buttonRelativeLayout.Clickable = true;
var stateListDrawable = new StateListDrawable();
stateListDrawable.AddState(new int[] { -Android.Resource.Attribute.StatePressed }, new ColorDrawable(Android.Graphics.Color.Argb
(BackGroundColor[0], BackGroundColor[1], BackGroundColor[2], BackGroundColor[3])));
stateListDrawable.AddState(new int[] { Android.Resource.Attribute.StatePressed }, new ColorDrawable(Android.Graphics.Color.Argb
(PressedBackGroundColor[0], PressedBackGroundColor[1], PressedBackGroundColor[2], PressedBackGroundColor[3])));
buttonRelativeLayout.Background = stateListDrawable;
buttonRelativeLayout.Click += ButtonRelativeLayout_Click;
var id = View.GenerateViewId();
buttonRelativeLayout.Id = id;
buttonDictionary.Add(id, hierarchyButton);
}
return(buttonRelativeLayout);
}
private void BuildLayout(HierarchyButton parentHierarchyButton)
{
mainLinearLayout.RemoveAllViews();
var IsFirst = true;
if (ShowBackButton && (currentParent.Parent != null))
{
var backButton = new BackHierarchyButton(parentHierarchyButton);
mainLinearLayout.AddView(CreateRelativeLayoutButton(backButton), buttonLayoutParams);
IsFirst = false;
}
foreach (var button in parentHierarchyButton.Children)
{
if (!IsFirst)
{
mainLinearLayout.AddView(CreateUnderLine(), horizontalLineLayoutParams);
}
var layout = CreateRelativeLayoutButton(button);
mainLinearLayout.AddView(layout, buttonLayoutParams);
IsFirst = false;
}
}
/// <summary>
/// 子要素を挿入します。子要素には親要素が設定されます。
/// </summary>
/// <param name="hierarchyButton"></param>
public void InsertChild(int index, HierarchyButton hierarchyButton)
{
hierarchyButton.Parent = this;
children.Insert(index, hierarchyButton);
}
/// <summary>
/// 子要素を追加します。子要素には親要素が設定されます。
/// </summary>
/// <param name="hierarchyButton"></param>
public void AddChild(HierarchyButton hierarchyButton)
{
hierarchyButton.Parent = this;
children.Add(hierarchyButton);
}
/// <summary>
/// <see cref="HierarchyTextButton"/>クラスの新しいインスタンスを初期化します。
/// </summary>
public BackHierarchyButton(HierarchyButton parent)
{
needReflesh = true;
Parent = parent;
}
