Win tweak panel for graph, default node and default edge attributes

diff --git a/windows/FormController.cs b/windows/FormController.cs
new file mode 100755 (executable)
index 0000000..a0c2fa2
--- /dev/null
+++ b/windows/FormController.cs
@@ -0,0 +1,169 @@
+/* $Id$ $Revision$ */\r
+/* vim:set shiftwidth=4 ts=8: */\r
+\r
+/**********************************************************\r
+*      This software is part of the graphviz package      *\r
+*                http://www.graphviz.org/                 *\r
+*                                                         *\r
+*            Copyright (c) 1994-2008 AT&T Corp.           *\r
+*                and is licensed under the                *\r
+*            Common Public License, Version 1.0           *\r
+*                      by AT&T Corp.                      *\r
+*                                                         *\r
+*        Information and Software Systems Research        *\r
+*              AT&T Research, Florham Park NJ             *\r
+**********************************************************/\r
+\r
+using System;\r
+using System.Collections.Generic;\r
+using System.IO;\r
+using System.Windows.Forms;\r
+\r
+namespace Graphviz\r
+{\r
+       public class FormController\r
+       {\r
+               /* document forms need to declare these menus */\r
+               public interface IMenus\r
+               {\r
+                       ToolStripMenuItem ExitMenuItem\r
+                       {\r
+                               get;\r
+                       }\r
+\r
+                       ToolStripMenuItem OpenMenuItem\r
+                       {\r
+                               get;\r
+                       }\r
+\r
+                       ToolStripMenuItem ShowAttributesMenuItem\r
+                       {\r
+                               get;\r
+                       }\r
+\r
+                       ToolStripMenuItem WindowMenuItem\r
+                       {\r
+                               get;\r
+                       }\r
+               }\r
+               \r
+               public static FormController Instance\r
+               {\r
+                       get { return _instance; }\r
+               }\r
+               \r
+               public Form MainForm\r
+               {\r
+                       /* return the topmost document form */\r
+                       get { return _mainForm; }\r
+               }\r
+\r
+               public event EventHandler MainFormChanged;\r
+\r
+               public string[] FilesToOpen()\r
+               {\r
+                       /* if user said OK, return the files he selected */\r
+                       return _openFileDialog.ShowDialog() == DialogResult.OK ? _openFileDialog.FileNames : null;\r
+               }\r
+\r
+               public Form OpenFiles(ICollection<string> fileNames)\r
+               {\r
+                       Form foundForm = null;\r
+                       foreach (string fileName in fileNames) {\r
+                               string canonicalPath = Path.GetFullPath(fileName).ToLower();\r
+                               if (_documentForms.ContainsKey(canonicalPath))\r
+                                       /* document already open */\r
+                                       foundForm = _documentForms[canonicalPath];\r
+                               else {\r
+                                       /* document needs to be created */\r
+                                       _documentForms[canonicalPath] = foundForm = CreateForm(fileName);\r
+\r
+                                       IMenus documentFormMenus = foundForm as IMenus;\r
+                                       if (documentFormMenus != null) {\r
+                                               /* exit menu quits the app */\r
+                                               documentFormMenus.ExitMenuItem.Click += delegate(object sender, EventArgs eventArgs)\r
+                                               {\r
+                                                       Application.Exit();\r
+                                               };\r
+\r
+                                               /* open menu asks user which files to open and then opens them */\r
+                                               documentFormMenus.OpenMenuItem.Click += delegate(object sender, EventArgs eventArgs)\r
+                                               {\r
+                                                       string[] filesToOpen = FilesToOpen();\r
+                                                       if (filesToOpen != null)\r
+                                                               OpenFiles(filesToOpen);\r
+                                               };\r
+\r
+                                               /* attribute menu shows the attribute inspector */\r
+                                               documentFormMenus.ShowAttributesMenuItem.Click += delegate(object sender, EventArgs eventArgs)\r
+                                               {\r
+                                                       AttributeInspectorForm.Instance.Show();\r
+                                               };\r
+\r
+                                               /* window menu shows a list of all forms, select one to activate it */\r
+                                               documentFormMenus.WindowMenuItem.DropDownOpening += delegate(object sender, EventArgs eventArgs)\r
+                                               {\r
+                                                       ToolStripMenuItem windowMenuItem = sender as ToolStripMenuItem;\r
+                                                       if (windowMenuItem != null)\r
+                                                       {\r
+                                                               windowMenuItem.DropDownItems.Clear();\r
+                                                               int i = 0;\r
+                                                               foreach (Form form in Application.OpenForms)\r
+                                                               {\r
+                                                                       Form innerForm = form;\r
+                                                                       ToolStripMenuItem formMenuItem = new ToolStripMenuItem(string.Format("{0} {1}", ++i, form.Text));\r
+                                                                       formMenuItem.Checked = Form.ActiveForm == innerForm;\r
+                                                                       formMenuItem.Click += delegate(object innerSender, EventArgs innerEventArgs)\r
+                                                                       {\r
+                                                                               innerForm.Activate();\r
+                                                                       };\r
+                                                                       windowMenuItem.DropDownItems.Add(formMenuItem);\r
+                                                               }\r
+                                                       }\r
+                                               };\r
+                                       }\r
+\r
+                                       /* when form activated, change the main form */\r
+                                       foundForm.Activated += delegate(object sender, EventArgs eventArgs)\r
+                                       {\r
+                                               _mainForm = (Form)sender;\r
+                                               if (MainFormChanged != null)\r
+                                                       MainFormChanged(_mainForm, EventArgs.Empty);\r
+                                       };\r
+\r
+                                       /* when form closed, remove it from our list */\r
+                                       foundForm.FormClosed += delegate(object sender, FormClosedEventArgs e)\r
+                                       {\r
+                                               _documentForms.Remove(canonicalPath);\r
+                                       };\r
+\r
+                                       /* window title is the filename portion */\r
+                                       foundForm.Text = Path.GetFileName(fileName);\r
+                                       \r
+                                       foundForm.Show();\r
+                               }\r
+                       }\r
+                       return foundForm;\r
+               }\r
+               \r
+               private FormController()\r
+               {\r
+                       _openFileDialog = new OpenFileDialog();\r
+                       _openFileDialog.Filter = "Graphviz graphs (*.dot)|*.dot|All files (*.*)|*.*";\r
+                       _openFileDialog.Multiselect = true;\r
+                       \r
+                       _documentForms = new Dictionary<string, Form>();\r
+                       _mainForm = null;\r
+               }\r
+\r
+               private Form CreateForm(string fileName)\r
+               {\r
+                       return new GraphForm(fileName);\r
+               }\r
+\r
+               private static FormController _instance = new FormController();\r
+               private readonly OpenFileDialog _openFileDialog;\r
+               private readonly Dictionary<string, Form> _documentForms;\r
+               private Form _mainForm;\r
+       }\r
+}\r