PDFPatcher/App/Functions/SourceFileControl.cs

using System;
using System.ComponentModel;
using System.Windows.Forms;
using PDFPatcher.Common;

namespace PDFPatcher
{
	public partial class SourceFileControl : UserControl
	{
		bool _controlLockDown;
		public SourceFileControl () {
			_controlLockDown = true;
			InitializeComponent ();
			_controlLockDown = false;
			this.Files = new string[] { };
		}

		///<summary>获取文件下拉列表框。</summary>
		internal HistoryComboBox FileList {
			get { return _SourcePdfBox; }
		}

		///<summary>点击浏览按钮更改选中文件后触发的事件。</summary>
		public event EventHandler BrowseSelectedFiles;

		/// <summary>
		/// 获取选定的 PDF 文件列表。
		/// </summary>
		internal string[] Files { get; private set; }
		/// <summary>
		/// 获取选定的 PDF 文件列表的第一项。
		/// </summary>
		internal string FirstFile {
			get {
				return this.Files != null && this.Files.Length > 0 ? this.Files[0] : String.Empty;
			}
		}

		[DefaultValue (null)]
		public override string Text {
			get {
				return _SourcePdfBox.Text;
			}
			set {
				_SourcePdfBox.Text = value;
			}
		}

		/////<summary>获取或指定文本标签的值。</summary>
		//[Description ("文本标签的值")]
		//public string Label {
		//    get { return this.label1.Text; }
		//    set { this.label1.Text = value; }
		//}

		/////<summary>获取或指定是否可多选文件。</summary>
		//[Description ("是否可多选文件")]
		//public bool MultiSelect {
		//    get { return this._OpenPdfBox.Multiselect; }
		//    set { this._OpenPdfBox.Multiselect = value; }
		//}

		private void _BrowseSourcePdfButton_Click (object sender, EventArgs e) {
			var t = _SourcePdfBox.Text;
			if (t.Length > 0
				&& FileHelper.IsPathValid (t)
				&& System.IO.Path.GetFileName (t).Length > 0) {
				_OpenPdfBox.FileName = t;
			}
			if (_OpenPdfBox.ShowDialog () == DialogResult.OK) {
				SelectFiles (_OpenPdfBox.FileNames);
				if (this.BrowseSelectedFiles != null) {
					this.BrowseSelectedFiles (sender, e);
				}
			}
		}

		private void SelectFiles (string[] files) {
			var t = _SourcePdfBox.Text;
			if (files.Length > 1) {
				this.Text = String.Concat ("<选定了 ", files.Length, " 个文件>", System.IO.Path.GetDirectoryName (files[0]));
			}
			else if (files[0] != t) {
				this.Text = files[0];
			}
			this.Files = files;
		}

		private void _SourcePdfBox_TextChanged (object sender, EventArgs e) {
			if (_controlLockDown == true) {
				return;
			}
			if (FileHelper.HasFileNameMacro (_SourcePdfBox.Text) == false) {
				SelectFiles (new string[] { _SourcePdfBox.Text });
			}
		}

		private void _SourcePdfBox_DragEnter (object sender, DragEventArgs e) {
			FormHelper.FeedbackDragFileOver (e, Constants.FileExtensions.Pdf);
		}

		private void _SourcePdfBox_DragDrop (object sender, DragEventArgs e) {
			var files = FormHelper.DropFileOver (e, Constants.FileExtensions.Pdf);
			SelectFiles (files);
		}

		private void SourceFileControl_Show (object sender, EventArgs e) {
			_controlLockDown = true;
			var t = this.Text;
			if (this.Visible && AppContext.MainForm != null) {
				this._SourcePdfBox.Contents = AppContext.Recent.SourcePdfFiles;
			}
			else if (this.Visible == false) {
				this._SourcePdfBox.Contents = null;
			}
			this.Text = t;
			_controlLockDown = false;
		}

        private void label1_Click(object sender, EventArgs e)
        {

        }

        private void _SourcePdfBox_SelectedIndexChanged(object sender, EventArgs e)
        {

        }

	}
}