Handful lessons in different areas of technology and life in general.
I was introduced to this Open Source software some time in February of last year when some group of people made a demo on using their software together with this as a bundled product. I was personally amazed not by their custom made product but by the way GISMapWindow application operates. It eases the way and process of working with maps, yes maps, GISMapWindow is according to their website:
MapWindow GIS is an open source GIS mapping application and set of programmable mapping components. Because it is distributed as an open source application under the Mozilla Public License distribution license, MapWindow GIS can be reprogrammed to perform different or more specialized tasks.
And now, after that demo, I’ve been spending the last two weeks fiddling around and getting used to this wonderful application as this is required as part of my recent project which involves integrating maps to our solution. Spending hours reading post on the forum and learning more from them. One post from a member that catch my attention is an enhancement request on the functionality of the existing Document Launcher plugin. He specifically asks if this plugin will support to have an additional toggle button that allows him to choose whether or not to execute the attached document on the specified shape when clicked. The FileOrUrl field execute action will then be bypassed.
So I started to download the source codes for GISMapWindow and adjusting the plugin to grant this request.
Below are the codes added and adjusted to the DocLauncher plugin:
1: Private Const _btnName As String = "LaunchDocument"
2: Private Const _toolTip As String = "Enable/Disable Open external document"
3: Private _bOpenDoc As Boolean
4:
5: <CLSCompliant(False)> _
6: Public Sub Initialize(ByVal MapWin As MapWindow.Interfaces.IMapWin, ByVal ParentHandle As Integer) Implements MapWindow.Interfaces.IPlugin.Initialize
7: 'This event is fired when the user loads your plug-in either through the plug-in dialog
8: 'box, or by checkmarking it in the plug-ins menu. This is where you would add buttons to the
9: 'tool bar or menu items to the menu.
10: '
11: 'It is also standard to set a global reference to the IMapWin that is passed through here so that
12: 'you can access it elsewhere in your project to act on MapWindow.
13: g_MapWin = MapWin
14:
15: ' Create a new toolbar and a new button with an icon attached on it
16: ' Added 04/01/2008 by Earljon Hidalgo
17: Try
18: Dim tbr As MapWindow.Interfaces.Toolbar = MapWin.Toolbar
19: tbr.AddToolbar(_toolbarName)
20:
21: Dim btn As MapWindow.Interfaces.ToolbarButton = tbr.AddButton(_btnName, _toolbarName, "", "")
22:
23: btn.BeginsGroup = True
24: ' if we like icon + text to appear, uncomment this
25: 'btn.Text = "OpenDoc"
26: btn.Tooltip = _toolTip
27: btn.Category = _toolbarName
28: btn.Picture = New System.Drawing.Icon(My.Resources.Resource.AppIcon, New System.Drawing.Size(16, 16))
29:
30: ' initialized to not selected
31: _bOpenDoc = False
32: tbr = Nothing
33: btn = Nothing
34: Catch ex As Exception
35: g_MapWin.ShowErrorDialog(ex)
36: End Try
37: End Sub
38:
39: Public Sub Terminate() Implements MapWindow.Interfaces.IPlugin.Terminate
40: 'This event is fired when the user unloads your plug-in either through the plug-in dialog
41: 'box, or by un-checkmarking it in the plug-ins menu. This is where you would remove any
42: 'buttons from the tool bar tool bar or menu items from the menu that you may have added.
43: 'If you don't do this, then you will leave dangling menus and buttons that don't do anything.
44:
45: ' Remove button and the toolbar if plugin is unloaded
46: ' Added 04/01/2008 by Earljon Hidalgo
47: g_MapWin.Toolbar.RemoveButton(_btnName)
48: g_MapWin.Toolbar.RemoveToolbar(_toolbarName)
49: End Sub
50:
51: Public Sub ItemClicked(ByVal ItemName As String, ByRef Handled As Boolean) Implements MapWindow.Interfaces.IPlugin.ItemClicked
52: 'This event fires when a menu item or toolbar button is clicked. So if you added a button or menu
53: 'on the Initialize event, then this is where you would handle it.
54:
55: ' Check and save the state of the button
56: ' Added 04/01/2008 by Earljon Hidalgo
57: Dim bToggle As Boolean = IIf(Not _bOpenDoc, True, False)
58: Try
59: If ItemName = _btnName Then
60: g_MapWin.Toolbar.ButtonItem(_btnName).Pressed = bToggle
61: _bOpenDoc = bToggle
62: Handled = True
63: End If
64: Catch ex As System.Exception
65: g_MapWin.ShowErrorDialog(ex)
66: End Try
67: End Sub
68:
69: <CLSCompliant(False)> _
70: Public Sub ShapesSelected(ByVal Handle As Integer, ByVal SelectInfo As MapWindow.Interfaces.SelectInfo) Implements MapWindow.Interfaces.IPlugin.ShapesSelected
71: 'This event fires when the user selects one or more shapes using the select tool in MapWindow. Handle is the
72: 'Layer handle for the shapefile on which shapes were selected. SelectInfo holds information abou the
73: 'shapes that were selected.
74: Dim i As Integer
75: Dim sf As MapWinGIS.Shapefile
76: Dim FileOrURL As String = ""
77: Dim newProcess As New Process
78: Try
79: 'make sure something was returned in SelectInfo
80: If SelectInfo Is Nothing Then Exit Sub
81:
82: ' Check the state of the button if we need to open external document
83: ' or ignore it
84: ' Added 04/01/2008 by Earljon Hidalgo
85: If Not _bOpenDoc Then Exit Sub
86:
87: 'get the shapefile object on which a shape was selected
88: sf = g_MapWin.Layers(Handle).GetObject
89: 'Check to see if this shapefile has an attribute field "FileOrURL"
90: For i = 0 To sf.NumFields - 1
91: If LCase(sf.Field(i).Name) = "fileorurl" Then
92: 'This shapefile has the needed attribute field.
93: 'We will only be launching one document, so if they selected more than one shape
94: 'then we will just launch the document associated with the first selected shape.
95: 'Also, i is the index of the field that has the FileOrURL that we are going to
96: 'launch.
97: FileOrURL = sf.CellValue(i, SelectInfo(0).ShapeIndex)
98: Exit For
99: End If
100: Next
101: If FileOrURL <> "" Then
102: 'Use a .NET process() to launch the file or URL
103: MapWinUtility.Logger.Dbg("DocLauncher: Launched File or URL: " + FileOrURL)
104: newProcess.StartInfo.FileName = FileOrURL
105: newProcess.Start()
106: End If
107: Catch ex As System.Exception
108: MapWinUtility.Logger.Msg(ex.Message)
109: End Try
110: End Sub
When compiled produces this output:
This patch already been uploaded to the SVN repository and hoping to see this changes on the next stable release of GISMapWindow.
Life & Technology 