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Creator PDF-417 2d barcode in Font ADVANCED SHAREPOINT PORTAL SERVER SOLUTIONS

CHAPTER 4 ADVANCED SHAREPOINT PORTAL SERVER SOLUTIONS
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<Browsable(True), Category("Tree View"), DefaultValue(234), _ WebPartStorage(Storage.Shared), FriendlyName("Background Green"), _ Description("Green portion of RGB background color.")> _ Property Green() As Integer Get Return m_Green End Get Set(ByVal Value As Integer) m_Green = Value End Set End Property <Browsable(True), Category("Tree View"), DefaultValue(234), _ WebPartStorage(Storage.Shared), FriendlyName("Background Blue"), _ Description("Blue portion of RGB background color.")> _ Property Blue() As Integer Get Return m_Blue End Get Set(ByVal Value As Integer) m_Blue = Value End Set End Property <Browsable(True), Category("Tree View"), DefaultValue("arial"), _ WebPartStorage(Storage.Shared), FriendlyName("Font Name"), Description( _ "Name of the display font.")> _ Property FontName() As String Get Return m_FontName End Get Set(ByVal Value As String) m_FontName = Value End Set End Property <Browsable(True), Category("Tree View"), DefaultValue("9pt"), _ WebPartStorage(Storage.Shared), FriendlyName("Font Size"), Description( _ "Size of the display font.")> _ Property FontSize() As String Get Return m_FontSize End Get
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Set(ByVal Value As String) m_FontSize = Value End Set End Property <Browsable(True), Category("Tree View"), DefaultValue(False), _ WebPartStorage(Storage.Shared), FriendlyName("New Window"), _ Description( _ "Determines iF a new window is opened when a listing link is clicked.")> _ Property NewWindow() As Boolean Get Return m_NewWindow End Get Set(ByVal Value As Boolean) m_NewWindow = Value End Set End Property
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Creating the Child Controls
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Creating the set of child controls for the web part is straightforward. Along with the TreeView, the web part also contains a Label control, which is used to display any error messages that occur during processing. Add the code from Listing 4-16 to create the child controls. Listing 4-16. Creating the Child Controls Protected Overrides Sub CreateChildControls() 'Add Tree objTree = New TreeView objTree.BackColor = System.Drawing.Color.FromArgb(Red, Green, Blue) objTree.DefaultStyle.Add("font-family", FontName) objTree.DefaultStyle.Add("font-size", FontSize) Controls.Add(objTree) 'Add message label lblMessages = New Label Controls.Add(lblMessages) End Sub
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Adding Areas and Listings
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Whenever the tree displays an area, it must also list the associated subareas and listings. Because we cannot predict how many listings and subareas will be underneath the current area, we must write a function that is called recursively until all of the child information is collected. Along with building the tree, we also want to make a decision as to whether or not the branch we are building should be expanded. This process is based on the value of the WSSMode property as I described previously. Along with expanding the appropriate branch, the web
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CHAPTER 4 ADVANCED SHAREPOINT PORTAL SERVER SOLUTIONS
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part also makes the key nodes bold so that they stand out to the end user. Add the code from Listing 4-17 to build the areas and listings into the tree. Listing 4-17. Adding Areas and Listings Private Function AddSubAreasAndListings( _ ByVal objParentNode As TreeNode, ByVal objParentArea As Area) As Boolean Try Dim blnReturn As Boolean = False 'Add the subareas under the parent area For Each objSubArea As Area In objParentArea.Areas If objSubArea.AreaTemplate = "SPSTOPIC" Then Dim objAreaNode As New TreeNode With objAreaNode .Text = objSubArea.Title .NavigateUrl = _ System.Web.HttpUtility.UrlPathEncode(objSubArea.WebUrl) .ImageUrl = "/_layouts/images/cat.gif" If WSSMode = False _ AndAlso Page.Request.Url.AbsolutePath.IndexOf( _ HttpUtility.UrlPathEncode(objSubArea.WebUrl)) = 0 Then objAreaNode.Expanded = True objAreaNode.DefaultStyle.Add("font-weight", "bold") blnReturn = True ElseIf WSSMode = True _ AndAlso Page.Request.UrlReferrer.AbsolutePath.IndexOf( _ HttpUtility.UrlPathEncode(objSubArea.WebUrl)) = 0 Then objAreaNode.Expanded = True objAreaNode.DefaultStyle.Add("font-weight", "bold") blnReturn = True End If End With objParentNode.Nodes.Add(objAreaNode) 'Recursively add additional sub areas and listings If AddSubAreasAndListings(objAreaNode, objSubArea) = True Then objAreaNode.Expanded = True blnReturn = True End If End If Next
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CHAPTER 4 ADVANCED SHAREPOINT PORTAL SERVER SOLUTIONS
'Add the portal listings for this area For Each objListing As AreaListing In objParentArea.Listings If objListing.Type = ListingType.Site _ Or objListing.Type = ListingType.TeamSite Then Dim objListingNode As New TreeNode With objListingNode .Text = objListing.Title .NavigateUrl = objListing.URL .ImageUrl = "/_layouts/images/link.gif" If NewWindow = True Then .Target = "_BLANK" End With objParentNode.Nodes.Add(objListingNode) End If Next Return blnReturn Catch x As Exception lblMessages.Text += x.Message End Try End Function
Add Sites and Subsites
Just like we want to add areas and listings to the tree, we also want to add sites and subsites. Unlike areas, however, sites are only added if the tree is in WSSMode. This means that the sites should not appear on an area page, but only when the tree is on a team site. Add the code from Listing 4-18 to put the sites and subsites in the tree. Listing 4-18. Adding Sites and Subsites Private Sub AddSubSites( _ ByVal objParentNode As TreeNode, ByVal objParentWeb As SPWeb) Try Dim objWebs As SPWebCollection = objParentWeb.GetSubwebsForCurrentUser() For Each objWeb As SPWeb In objWebs 'Add Node Dim objNode As New TreeNode With objNode .Text = objWeb.Title .ImageUrl = "/_layouts/images/asp16.gif" .NavigateUrl = objWeb.Url End With objParentNode.Nodes.Add(objNode)
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