ImportDialog.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.Windows.Forms;

namespace SlbViewer
{
    public partial class ImportDialog : Form
    {
        public List<string> SelectedFiles { get; private set; } = new List<string>();
        public bool CreateNewLibrary { get; private set; }
        public string NewLibraryPath { get; private set; } = "";

        private ListBox listFiles;
        private Button btnAddFiles;
        private Button btnRemove;
        private Button btnClear;
        private RadioButton rbAddToExisting;
        private RadioButton rbCreateNew;
        private TextBox txtNewLibPath;
        private Button btnBrowseNewLib;
        private Button btnOK;
        private Button btnCancel;
        private Label lblFiles;
        private Label lblMode;
        private Label lblCount;

        private string currentSlbPath = "";

        public ImportDialog(string currentLibraryPath)
        {
            currentSlbPath = currentLibraryPath;
            InitializeComponent();
            InitializeControls();
        }

        private void InitializeComponent()
        {
            this.Text = "导入幻灯片";
            this.Size = new System.Drawing.Size(600, 500);
            this.FormBorderStyle = FormBorderStyle.FixedDialog;
            this.MaximizeBox = false;
            this.MinimizeBox = false;
            this.StartPosition = FormStartPosition.CenterParent;

            // 文件列表标签
            lblFiles = new Label
            {
                Text = "要导入的文件 (SLD/图像):",
                Location = new System.Drawing.Point(20, 20),
                Size = new System.Drawing.Size(200, 20)
            };

            // 文件列表
            listFiles = new ListBox
            {
                Location = new System.Drawing.Point(20, 45),
                Size = new System.Drawing.Size(450, 200),
                SelectionMode = SelectionMode.MultiExtended
            };

            // 添加文件按钮
            btnAddFiles = new Button
            {
                Text = "添加文件...",
                Location = new System.Drawing.Point(480, 45),
                Size = new System.Drawing.Size(100, 30)
            };
            btnAddFiles.Click += BtnAddFiles_Click;

            // 移除按钮
            btnRemove = new Button
            {
                Text = "移除选中",
                Location = new System.Drawing.Point(480, 85),
                Size = new System.Drawing.Size(100, 30)
            };
            btnRemove.Click += BtnRemove_Click;

            // 清空按钮
            btnClear = new Button
            {
                Text = "清空列表",
                Location = new System.Drawing.Point(480, 125),
                Size = new System.Drawing.Size(100, 30)
            };
            btnClear.Click += BtnClear_Click;

            // 文件计数标签
            lblCount = new Label
            {
                Text = "文件数: 0",
                Location = new System.Drawing.Point(20, 250),
                Size = new System.Drawing.Size(200, 20)
            };

            // 导入模式标签
            lblMode = new Label
            {
                Text = "导入模式:",
                Location = new System.Drawing.Point(20, 285),
                Size = new System.Drawing.Size(100, 20)
            };

            // 添加到现有库选项
            rbAddToExisting = new RadioButton
            {
                Text = "添加到当前库",
                Location = new System.Drawing.Point(20, 310),
                Size = new System.Drawing.Size(200, 25),
                Checked = true
            };
            rbAddToExisting.CheckedChanged += RbMode_CheckedChanged;

            // 创建新库选项
            rbCreateNew = new RadioButton
            {
                Text = "创建新库",
                Location = new System.Drawing.Point(20, 340),
                Size = new System.Drawing.Size(120, 25)
            };
            rbCreateNew.CheckedChanged += RbMode_CheckedChanged;

            // 新库路径输入框
            txtNewLibPath = new TextBox
            {
                Location = new System.Drawing.Point(140, 340),
                Size = new System.Drawing.Size(330, 25),
                Enabled = false
            };

            // 浏览新库路径按钮
            btnBrowseNewLib = new Button
            {
                Text = "浏览...",
                Location = new System.Drawing.Point(480, 338),
                Size = new System.Drawing.Size(100, 30),
                Enabled = false
            };
            btnBrowseNewLib.Click += BtnBrowseNewLib_Click;

            // 确定按钮
            btnOK = new Button
            {
                Text = "导入",
                Location = new System.Drawing.Point(380, 410),
                Size = new System.Drawing.Size(90, 35),
                DialogResult = DialogResult.OK
            };
            btnOK.Click += BtnOK_Click;

            // 取消按钮
            btnCancel = new Button
            {
                Text = "取消",
                Location = new System.Drawing.Point(480, 410),
                Size = new System.Drawing.Size(90, 35),
                DialogResult = DialogResult.Cancel
            };

            // 添加控件
            this.Controls.AddRange(new Control[] {
                lblFiles, listFiles,
                btnAddFiles, btnRemove, btnClear, lblCount,
                lblMode, rbAddToExisting, rbCreateNew,
                txtNewLibPath, btnBrowseNewLib,
                btnOK, btnCancel
            });

            this.AcceptButton = btnOK;
            this.CancelButton = btnCancel;
        }

        private void InitializeControls()
        {
            // 如果没有当前库，强制创建新库
            if (string.IsNullOrEmpty(currentSlbPath))
            {
                rbCreateNew.Checked = true;
                rbAddToExisting.Enabled = false;
            }
        }

        private void BtnAddFiles_Click(object? sender, EventArgs e)
        {
            using (OpenFileDialog openDialog = new OpenFileDialog())
            {
                openDialog.Filter = "支持的文件|*.sld;*.bmp;*.png;*.jpg;*.jpeg;*.gif|" +
                                   "AutoCAD 幻灯片 (*.sld)|*.sld|" +
                                   "图像文件 (*.bmp;*.png;*.jpg)|*.bmp;*.png;*.jpg;*.jpeg;*.gif|" +
                                   "所有文件 (*.*)|*.*";
                openDialog.Title = "选择 SLD 文件或图像文件";
                openDialog.Multiselect = true;

                if (openDialog.ShowDialog() == DialogResult.OK)
                {
                    foreach (string file in openDialog.FileNames)
                    {
                        if (!listFiles.Items.Contains(file))
                        {
                            listFiles.Items.Add(file);
                        }
                    }
                    UpdateFileCount();
                }
            }
        }

        private void BtnRemove_Click(object? sender, EventArgs e)
        {
            if (listFiles.SelectedItems.Count > 0)
            {
                // 从后往前删除，避免索引变化
                for (int i = listFiles.SelectedIndices.Count - 1; i >= 0; i--)
                {
                    listFiles.Items.RemoveAt(listFiles.SelectedIndices[i]);
                }
                UpdateFileCount();
            }
        }

        private void BtnClear_Click(object? sender, EventArgs e)
        {
            listFiles.Items.Clear();
            UpdateFileCount();
        }

        private void RbMode_CheckedChanged(object? sender, EventArgs e)
        {
            bool isCreateNew = rbCreateNew.Checked;
            txtNewLibPath.Enabled = isCreateNew;
            btnBrowseNewLib.Enabled = isCreateNew;
        }

        private void BtnBrowseNewLib_Click(object? sender, EventArgs e)
        {
            using (SaveFileDialog saveDialog = new SaveFileDialog())
            {
                saveDialog.Filter = "AutoCAD 幻灯片库 (*.slb)|*.slb";
                saveDialog.Title = "创建新的幻灯片库";
                saveDialog.FileName = "NewLibrary.slb";

                if (saveDialog.ShowDialog() == DialogResult.OK)
                {
                    txtNewLibPath.Text = saveDialog.FileName;
                }
            }
        }

        private void BtnOK_Click(object? sender, EventArgs e)
        {
            // 检查是否有文件
            if (listFiles.Items.Count == 0)
            {
                MessageBox.Show("请先添加要导入的 SLD 文件", "提示",
                    MessageBoxButtons.OK, MessageBoxIcon.Information);
                this.DialogResult = DialogResult.None;
                return;
            }

            // 收集文件路径
            SelectedFiles.Clear();
            foreach (var item in listFiles.Items)
            {
                SelectedFiles.Add(item.ToString() ?? "");
            }

            // 确定导入模式
            CreateNewLibrary = rbCreateNew.Checked;

            if (CreateNewLibrary)
            {
                // 检查新库路径
                if (string.IsNullOrWhiteSpace(txtNewLibPath.Text))
                {
                    MessageBox.Show("请指定新库文件的保存路径", "提示",
                        MessageBoxButtons.OK, MessageBoxIcon.Information);
                    this.DialogResult = DialogResult.None;
                    return;
                }
                NewLibraryPath = txtNewLibPath.Text;
            }
        }

        private void UpdateFileCount()
        {
            lblCount.Text = $"文件数: {listFiles.Items.Count}";
        }
    }
}