Developer's Guide - MapGuide Open Source - OSGeo

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How This Page Works This example page performs the following operations: 1 Get session information. When you first go to the URL containing the web layout, the Viewer initiates a new session. It prompts for a user id and password, and uses these to validate with the site server. If the user id and password are valid, the site server creates a session and sends the session id back to the viewer. The Viewer passes the session information every time it sends a request to a MapGuide page. The pages use this information to re-establish a session. 2 Perform basic initialization. The webconfig.ini file contains parameters required to connect to the site server, including the IP address and port numbers to use for communication. MgInitializeWebTier() reads the file and gets the necessary values to find the site server and create a connection. 3 Get user information. The site server saves the user credentials along with other session information. These credentials must be supplied when the user first connects to the site. At that time, the Viewer authenticates the user and creates a new session using the credentials. Using the session ID, the pages can get an encrypted copy of the user credentials that can be used for validation. 4 Create a site connection. Any MapGuide pages require a connection to a site server, which manages the repository and site services. 5 Create a connection to a resource service. Access to resources is handled by a resource service. In this case, the MSP needs a resource service in order to retrieve information about the map resource. You may need to create connections to other services, depending on the needs of your application. 6 Retrieve map details. 10 | Chapter 1 Introduction The map name is also passed by the viewer to the MapGuide page. Use this name to open a particular map resource with the resource service. Once the map is open you can get other information. This example
displays the spatial reference system used by the map, but you can also get more complex information about the layers that make up the map. Understanding Viewer Frames The MapGuide Viewers use HTML frames to divide the viewer area. Refer to the diagram for the locations of the following frames and frame sets: Name maparea tbFrame mapFrame formFrame scriptFrame taskArea taskBar taskFrame Description Unnamed. Contains all the Viewer frames. This can be wrapped by an outer frame so you can embed the Viewer in your own site. Frame set containing the tool bar, map area, form frame, and script frame. Frame containing the tool bar. Add new commands to the tool bar by modifying the web layout using Studio. Frame containing the map data. This includes the map display and the layers and properties palettes. Hidden frame that can be used to generate HTTP POST requests for sending data to the server. Hidden frame that can be used for executing client-side JavaScript. Frame set containing the task bar and the task frame. Frame containing the task bar. Frame used to hold the task list frame and the task pane frame. Understanding Viewer Frames | 11
Page 1 and 2: MapGuide Open Source Developer’s
Page 3 and 4: Contents Chapter 1 Introduction . .
Page 5: Another Way To Create Layers . . .
Page 8 and 9: What This Guide Covers This guide d
Page 11 and 12: This next sample MapGuide page disp
Page 13 and 14: Example Code This sample illustrate
Page 15: echo 'Map ' . $map->GetName() . ' u
Page 19 and 20: Viewer Frames Most custom MSPs disp
Page 21 and 22: Viewer Sample Application - Zoom
Page 23 and 24: Embedding a Viewer in Your Own Page
Page 25 and 26: Resources and Repositories A MapGui
Page 27: $mapDefId = new MgResourceIdentifie
Page 30 and 31: Overview of Layers Layers represent
Page 32 and 33: Layer Style Layer Visibility The da
Page 34 and 35: function OnPageLoad() { parent.Zoom
Page 36 and 37: MgInitializeWebTier ($webconfigFile
Page 39 and 40: Working With Feature Data 3 In this
Page 41 and 42: Querying Feature Data In order to w
Page 43 and 44: Examples These examples assume that
Page 45 and 46: $districtQuery = new MgFeatureQuery
Page 47 and 48: $districtQuery = new MgFeatureQuery
Page 49 and 50: There are different selection tools
Page 51 and 52: Script command. See Example: Listin
Page 53 and 54: 4 Initialize the MgSelection object
Page 55 and 56: the $layerClassName = $layer->GetFe
Page 57 and 58: The PHP code in this example create
Page 59 and 60: $resourceService = $siteConnection-
Page 61 and 62: Modifying Maps and Layers In this c
Page 63 and 64: This example ■ loads a layer that
Page 65 and 66: } // ... The page then goes on to s
Page 67 and 68:
Function CreateScaleRange() CreateA
Page 69 and 70:
Function CreateLineTypeStyle() Crea
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... //-----------------------------
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Adding Layers To A Map The precedin
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function add_layer_resource_to_map(
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Analyzing Features In this chapter
Page 79 and 80:
■ MgLineString — a series of co
Page 81 and 82:
To create an MgCoordinateSystem obj
Page 83 and 84:
■ Determine the SRS for the featu
Page 85 and 86:
Inserting, Deleting, and Updating F
Page 87 and 88:
Example $queryOptions = new MgFeatu
Page 89 and 90:
} The geometries for the selected f
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$map->Save($resourceService); The f
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} 'ResourceId')->item(0); $featureS
Page 95 and 96:
Digitizing and Redlining In this ch
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For example, see task_pane_redlinin
Page 99 and 100:
Create a temporary feature source t
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Custom Output In this chapter ■ I
Page 103 and 104:
■ Images can be copied to the Win
Page 105:
$dwfVersion = new MgDwfVersion("6.0
Page 108 and 109:
G geographic coordinates 74 geometr
Page 110:
Viewer, embedded in HTML page 17 Vi
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