downkyi/DownKyi/ViewModels/Dialogs/BaseDialogViewModel.cs

using DownKyi.Images;
using DownKyi.Models;
using DownKyi.Utils;
using Prism.Commands;
using Prism.Mvvm;
using Prism.Services.Dialogs;
using System;

namespace DownKyi.ViewModels.Dialogs
{
    public class BaseDialogViewModel : BindableBase, IDialogAware
    {
        #region 页面属性申明

        private string title;
        public string Title
        {
            get { return title; }
            set { SetProperty(ref title, value); }
        }

        private VectorImage closeIcon;
        public VectorImage CloseIcon
        {
            get { return closeIcon; }
            set { SetProperty(ref closeIcon, value); }
        }

        #endregion

        public BaseDialogViewModel()
        {
            #region 属性初始化

            Title = new AppInfo().Name;
            CloseIcon = new VectorImage
            {
                Height = SystemIcon.Instance().Close.Height,
                Width = SystemIcon.Instance().Close.Width,
                Data = SystemIcon.Instance().Close.Data,
                Fill = SystemIcon.Instance().Close.Fill
            };

            #endregion

        }


        #region 命令申明

        // 鼠标进入关闭按钮事件
        private DelegateCommand closeEnterCommand;
        public DelegateCommand CloseEnterCommand => closeEnterCommand ?? (closeEnterCommand = new DelegateCommand(ExecuteCloseEnterCommand));

        /// <summary>
        /// 鼠标进入关闭按钮事件
        /// </summary>
        private void ExecuteCloseEnterCommand()
        {
            SetEnterStyle(CloseIcon);
        }

        // 鼠标离开关闭按钮事件
        private DelegateCommand closeLeaveCommand;
        public DelegateCommand CloseLeaveCommand => closeLeaveCommand ?? (closeLeaveCommand = new DelegateCommand(ExecuteCloseLeaveCommand));

        /// <summary>
        /// 鼠标离开关闭按钮事件
        /// </summary>
        private void ExecuteCloseLeaveCommand()
        {
            SetLeaveStyle(CloseIcon);
        }

        // 关闭窗口事件
        private DelegateCommand closeCommand;
        public DelegateCommand CloseCommand => closeCommand ?? (closeCommand = new DelegateCommand(ExecuteCloseCommand));

        /// <summary>
        /// 关闭窗口事件
        /// </summary>
        private void ExecuteCloseCommand()
        {
            ButtonResult result = ButtonResult.Cancel;
            RaiseRequestClose(new DialogResult(result));
        }

        #endregion

        /// <summary>
        /// 鼠标进入系统按钮时的图标样式
        /// </summary>
        /// <param name="icon">图标</param>
        private void SetEnterStyle(VectorImage icon)
        {
            icon.Fill = DictionaryResource.GetColor("ColorSystemBtnTint");
        }

        /// <summary>
        /// 鼠标离开系统按钮时的图标样式
        /// </summary>
        /// <param name="icon">图标</param>
        private void SetLeaveStyle(VectorImage icon)
        {
            icon.Fill = DictionaryResource.GetColor("ColorSystemBtnTintDark");
        }

        #region 接口实现

        //触发窗体关闭事件
        public virtual void RaiseRequestClose(IDialogResult dialogResult)
        {
            RequestClose?.Invoke(dialogResult);
        }

        public event Action<IDialogResult> RequestClose;

        public virtual bool CanCloseDialog()
        {
            return true;
        }

        public virtual void OnDialogClosed()
        {
        }

        public virtual void OnDialogOpened(IDialogParameters parameters)
        {
        }

        #endregion

    }
}