/*
 * Copyright(c) 2021 Samsung Electronics Co., Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */
using System;
using Tizen.NUI;
using Tizen.NUI.BaseComponents;
using Tizen.NUI.Components;

namespace NUITizenGallery
{
    public partial class ImageTest5Page : ContentPage
    {

        private float imgWidth = 0;
        private float imgHeight = 0;
        private String mode = "FillToParent";
        private int choice = 0;

        private void updateLabel()
        {
            imgHeight = imageView.Size2D.Height;
            imgWidth = imageView.Size2D.Width;

            if (choice == 0) mode = "FillToParent";
            else if (choice == 1) mode = "SizeRelativeToParent";
            else if (choice == 2) mode = "FitToChildren";
            else mode = "Other";
            desc1.Text = "Mode : " + mode + "/ Width : " + (imgWidth > 0 ? imgWidth.ToString() : "-") + ", Height: " + (imgHeight > 0 ? imgHeight.ToString() : "-");
        }

        public ImageTest5Page()
        {
            InitializeComponent();
            updateLabel();

            image1Btn.Clicked += (o, e) =>
            {
                imageView.Size2D = new Size2D(imageView.Size2D.Width + 100, imageView.Size2D.Height + 100);
                updateLabel();
            };
            image2Btn.Clicked += (o, e) =>
            {
                imageView.Size2D = new Size2D(imageView.Size2D.Width - 100, imageView.Size2D.Height - 100);
                updateLabel();
            };
            image3Btn.Clicked += (o, e) =>
            {
                imageView.Size2D = new Size2D(imageView.Size2D.Width, imageView.Size2D.Height + 100);
                updateLabel();
            };
            image4Btn.Clicked += (o, e) =>
            {
                imageView.Size2D = new Size2D(imageView.Size2D.Width, imageView.Size2D.Height - 100);
                updateLabel();
            };
            image5Btn.Clicked += (o, e) =>
            {
                if (choice == 0)
                {
                    imageView.HeightResizePolicy = Tizen.NUI.ResizePolicyType.FillToParent;
                    imageView.WidthResizePolicy = Tizen.NUI.ResizePolicyType.FillToParent;
                    choice++;
                }
                else if (choice == 1)
                {
                    imageView.HeightResizePolicy = Tizen.NUI.ResizePolicyType.SizeRelativeToParent;
                    imageView.WidthResizePolicy = Tizen.NUI.ResizePolicyType.SizeRelativeToParent;
                    choice++;
                }
                else if (choice == 2)
                {
                    imageView.HeightResizePolicy = Tizen.NUI.ResizePolicyType.FitToChildren;
                    imageView.WidthResizePolicy = Tizen.NUI.ResizePolicyType.FitToChildren;
                    choice = 0;
                }
                updateLabel();
            };
        }
        protected override void Dispose(DisposeTypes type)
        {
            if (Disposed)
            {
                return;
            }

            if (type == DisposeTypes.Explicit)
            {
                RemoveAllChildren(true);
            }

            base.Dispose(type);
        }

        private void RemoveAllChildren(bool dispose = false)
        {
            RecursiveRemoveChildren(this, dispose);
        }

        private void RecursiveRemoveChildren(View parent, bool dispose)
        {
            if (parent == null)
            {
                return;
            }

            int maxChild = (int)parent.ChildCount;
            for (int i = maxChild - 1; i >= 0; --i)
            {
                View child = parent.GetChildAt((uint)i);
                if (child == null)
                {
                    continue;
                }

                RecursiveRemoveChildren(child, dispose);
                parent.Remove(child);
                if (dispose)
                {
                    child.Dispose();
                }
            }
        }
    }
}