ashatora/openlayers
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Adjust how the parameters are calculated for the GETVISIBLEMAPEXTENT call for overlays so that existing parameters are safely overwritten with the required parameters for this call. r=me (Closes #1647)

Browse Source 
git-svn-id: http://svn.openlayers.org/trunk/openlayers@7928 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
Paul Spencer
2008-09-02 15:46:35 +00:00
parent f8d3e41105
commit ede7bef13c
1 changed files with 22 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
lib/OpenLayers/Layer/MapGuide.js
View File

@@ -28,7 +28,7 @@ OpenLayers.Layer.MapGuide = OpenLayers.Class(OpenLayers.Layer.Grid, {
* {Boolean} use tile server or request single tile image. Note that using
* singleTile *and* isBaseLayer false is *not recommend*: it uses synchronous
* XMLHttpRequests to load tiles, and this will *lock up users browsers*
* during requests.
* during requests if the server fails to respond.
**/
singleTile: false,
@@ -63,18 +63,29 @@ OpenLayers.Layer.MapGuide = OpenLayers.Class(OpenLayers.Layer.Grid, {
* Constructor: OpenLayers.Layer.MapGuide
* Create a new Mapguide layer, either tiled or untiled.
*
* For tiled layers, the 'groupName' and 'mapDefnition' options
* must be specified as options.
* For tiled layers, the 'groupName' and 'mapDefinition' values
* must be specified as parameters in the constructor.
*
* For untiled layers, specify either combination of 'mapName' and
* 'session', or 'mapDefinition' and 'locale'.
* For untiled base layers, specify either combination of 'mapName' and
* 'session', or 'mapDefinition' and 'locale'.
*
* For untiled overlay layers (singleTile=true and isBaseLayer=false),
* mapName and session are required parameters for the Layer constructor.
* Also NOTE: untiled overlay layers issues a synchronous AJAX request
* before the image request can be issued so the users browser may lock
* up if the MG Web tier does not respond in a timely fashion.
*
* NOTE: MapGuide OS uses a DPI value and degrees to meters conversion
* factor that are different than the defaults used in OpenLayers,
* so these must be adjusted accordingly in your application.
* See the MapGuide example for how to set these values for MGOS.
*
* Parameters:
* name - {String} Name of the layer displayed in the interface
* url - {String} Location of the MapGuide mapagent executable
* (e.g. http://localhost:8008/mapguide/mapagent/mapagent.fcgi)
* params - {Object} hashtable of additional parameters to use. Some
* parameters may require additional code on the serer. The ones that
* parameters may require additional code on the server. The ones that
* you may want to use are:
* - mapDefinition - {String} The MapGuide resource definition
* (e.g. Library://Samples/Gmap/Maps/gmapTiled.MapDefinition)
@@ -116,6 +127,7 @@ OpenLayers.Layer.MapGuide = OpenLayers.Class(OpenLayers.Layer.Grid, {
this.params,
this.SINGLE_TILE_PARAMS
);
} else {
//initialize for tiled layers
OpenLayers.Util.applyDefaults(
@@ -196,16 +208,15 @@ OpenLayers.Layer.MapGuide = OpenLayers.Class(OpenLayers.Layer.Grid, {
//but we first need to call GETVISIBLEMAPEXTENT to set the extent
var getVisParams = {};
getVisParams = OpenLayers.Util.extend(getVisParams, params);
getVisParams.operation = "GETVISIBLEMAPEXTENT";
getVisParams.version = "1.0.0";
getVisParams.session = this.params.session;
getVisParams.mapName = this.params.mapName;
getVisParams.format = 'text/xml';
getVisParams = OpenLayers.Util.extend(getVisParams, params);
url = this.getFullRequestString( getVisParams );
OpenLayers.Request.GET({
url: this.url, params: getVisParams, async: false
});
OpenLayers.Request.GET({url: url, async: false});
}
//construct the full URL
@@ -225,7 +236,7 @@ OpenLayers.Layer.MapGuide = OpenLayers.Class(OpenLayers.Layer.Grid, {
tilerow: rowidx,
scaleindex: this.resolutions.length - this.map.zoom - 1
});
}
}
return url;
},