1
|
/*
|
2
|
License: LGPL as per: http://www.gnu.org/copyleft/lesser.html
|
3
|
$Id: Context.js 3887 2008-02-27 18:18:53Z ahocevar $
|
4
|
*/
|
5
|
|
6
|
// Ensure this object's dependancies are loaded.
|
7
|
mapbuilder.loadScript(baseDir+"/model/ModelBase.js");
|
8
|
|
9
|
/**
|
10
|
* Stores a Web Map Context (WMC) document as defined by the Open Geospatial Consortium
|
11
|
* (http://www.opengeospatial.org/) and extensions the the WMC.
|
12
|
*
|
13
|
* Listeners supported by this model:
|
14
|
* "refresh" called when window parameters (width/height, bbox) are changed
|
15
|
* "hidden" called when visibilty of a layer is changed
|
16
|
*
|
17
|
* @constructor
|
18
|
* @base ModelBase
|
19
|
* @author Cameron Shorter
|
20
|
* @param modelNode Pointer to the xml node for this model from the config file.
|
21
|
* @param parent The parent model for the object.
|
22
|
*
|
23
|
*/
|
24
|
function Context(modelNode, parent) {
|
25
|
// Inherit the ModelBase functions and parameters
|
26
|
ModelBase.apply(this, new Array(modelNode, parent));
|
27
|
|
28
|
this.namespace = "xmlns:mb='http://mapbuilder.sourceforge.net/mapbuilder' xmlns:wmc='http://www.opengis.net/context' xmlns:xsl='http://www.w3.org/1999/XSL/Transform'";
|
29
|
|
30
|
/**
|
31
|
* Change a Layer's visibility.
|
32
|
* @param layerId The name of the layer that is to be changed
|
33
|
* @param hidden String with the value to be set; 1=hidden, 0=visible.
|
34
|
*/
|
35
|
this.setHidden=function(layerId, hidden){
|
36
|
// Set the hidden attribute in the Context
|
37
|
var hiddenValue = "0";
|
38
|
if (hidden) hiddenValue = "1";
|
39
|
|
40
|
var layer = this.getLayer(layerId);
|
41
|
if (layer) layer.setAttribute("hidden", hiddenValue);
|
42
|
// Call the listeners
|
43
|
this.callListeners("hidden", layerId);
|
44
|
}
|
45
|
|
46
|
/**
|
47
|
* Get the layer's visiblity attribute value.
|
48
|
* @param layerId The name of the layer that is to be changed
|
49
|
* @return hidden String with the value; 1=hidden, 0=visible.
|
50
|
*/
|
51
|
this.getHidden=function(layerId){
|
52
|
var hidden=1;
|
53
|
var layer = this.getLayer(layerId);
|
54
|
if (layer) hidden = layer.getAttribute("hidden");
|
55
|
return hidden;
|
56
|
}
|
57
|
|
58
|
/**
|
59
|
* Get the BoundingBox value from the Context document.
|
60
|
* @return BoundingBox array with the sequence (xmin,ymin,xmax,ymax).
|
61
|
*/
|
62
|
this.getBoundingBox=function() {
|
63
|
var bbox = new Array();
|
64
|
// Extract BoundingBox from the context
|
65
|
var boundingBox=this.doc.selectSingleNode("/wmc:ViewContext/wmc:General/wmc:BoundingBox");
|
66
|
bbox[0]=parseFloat(boundingBox.getAttribute("minx"));
|
67
|
bbox[1]=parseFloat(boundingBox.getAttribute("miny"));
|
68
|
bbox[2]=parseFloat(boundingBox.getAttribute("maxx"));
|
69
|
bbox[3]=parseFloat(boundingBox.getAttribute("maxy"));
|
70
|
return bbox;
|
71
|
}
|
72
|
|
73
|
/**
|
74
|
* Set the BoundingBox element and call the refresh listeners
|
75
|
* @param boundingBox array in the sequence (xmin, ymin, xmax, ymax).
|
76
|
*/
|
77
|
this.setBoundingBox=function(boundingBox) {
|
78
|
// Set BoundingBox in context
|
79
|
var bbox=this.doc.selectSingleNode("/wmc:ViewContext/wmc:General/wmc:BoundingBox");
|
80
|
bbox.setAttribute("minx", boundingBox[0]);
|
81
|
bbox.setAttribute("miny", boundingBox[1]);
|
82
|
bbox.setAttribute("maxx", boundingBox[2]);
|
83
|
bbox.setAttribute("maxy", boundingBox[3]);
|
84
|
// Call the listeners
|
85
|
this.callListeners("bbox", boundingBox);
|
86
|
}
|
87
|
|
88
|
/**
|
89
|
* Set the BoundingBox element and call the refresh listeners
|
90
|
* @param boundingBox array in the sequence (xmin, ymin, xmax, ymax).
|
91
|
*/
|
92
|
this.initBbox=function(objRef) {
|
93
|
// Set BoundingBox in context from URL CGI params
|
94
|
if (window.cgiArgs["bbox"]) { //set as minx,miny,maxx,maxy
|
95
|
var bbox = window.cgiArgs["bbox"].split(',');
|
96
|
objRef.setBoundingBox(bbox);
|
97
|
}
|
98
|
}
|
99
|
this.addListener( "loadModel", this.initBbox, this );
|
100
|
//this.addListener( "contextLoaded", this.initBbox, this );
|
101
|
|
102
|
/**
|
103
|
* Set the aoi param and call the refresh listeners
|
104
|
* @param boundingBox array in the sequence (xmin, ymin, xmax, ymax).
|
105
|
*/
|
106
|
this.initAoi=function(objRef) {
|
107
|
// Set AOI of context from URL CGI params
|
108
|
if (window.cgiArgs["aoi"]) { //set as ul,lr point arrays
|
109
|
var aoi = window.cgiArgs["aoi"].split(',');
|
110
|
objRef.setParam("aoi",new Array(new Array(aoi[0],aoi[3]),new Array(aoi[2],aoi[1])));
|
111
|
}
|
112
|
}
|
113
|
this.addListener( "loadModel", this.initAoi, this );
|
114
|
//MA this.addListener( "contextLoaded", this.initAoi, this );
|
115
|
|
116
|
/**
|
117
|
* Set the Spatial Reference System for the context document.
|
118
|
* @param srs The Spatial Reference System.
|
119
|
*/
|
120
|
this.setSRS=function(srs) {
|
121
|
var bbox=this.doc.selectSingleNode("/wmc:ViewContext/wmc:General/wmc:BoundingBox");
|
122
|
bbox.setAttribute("SRS",srs);
|
123
|
this.callListeners("srs");
|
124
|
}
|
125
|
|
126
|
/**
|
127
|
* Get the Spatial Reference System from the context document.
|
128
|
* @return srs The Spatial Reference System.
|
129
|
*/
|
130
|
this.getSRS=function() {
|
131
|
var bbox=this.doc.selectSingleNode("/wmc:ViewContext/wmc:General/wmc:BoundingBox");
|
132
|
srs=bbox.getAttribute("SRS");
|
133
|
srs = srs ? srs : 'EPSG:4326';
|
134
|
return srs;
|
135
|
}
|
136
|
|
137
|
/**
|
138
|
* Get the Projection object from the context document.
|
139
|
* @return Proj Object of The Spatial Reference System.
|
140
|
*/
|
141
|
this.initProj=function(objRef) {
|
142
|
objRef.proj=new OpenLayers.Projection(objRef.getSRS());
|
143
|
}
|
144
|
this.addFirstListener( "loadModel", this.initProj, this );
|
145
|
|
146
|
/**
|
147
|
* Get the Window width.
|
148
|
* @return width The width of map window from the context document
|
149
|
*/
|
150
|
this.getWindowWidth=function() {
|
151
|
var win=this.doc.selectSingleNode("/wmc:ViewContext/wmc:General/wmc:Window");
|
152
|
return win.getAttribute("width");
|
153
|
}
|
154
|
|
155
|
/**
|
156
|
* Set the Window width.
|
157
|
* @param width The width of map window to set in the context document
|
158
|
*/
|
159
|
this.setWindowWidth=function(width) {
|
160
|
var win=this.doc.selectSingleNode("/wmc:ViewContext/wmc:General/wmc:Window");
|
161
|
win.setAttribute("width", width);
|
162
|
this.callListeners("resize");
|
163
|
}
|
164
|
|
165
|
/**
|
166
|
* Get the Window height.
|
167
|
* @return height The height of map window from the context document.
|
168
|
*/
|
169
|
this.getWindowHeight=function() {
|
170
|
var win=this.doc.selectSingleNode("/wmc:ViewContext/wmc:General/wmc:Window");
|
171
|
return win.getAttribute("height");
|
172
|
}
|
173
|
|
174
|
/**
|
175
|
* Set the Window height.
|
176
|
* @param height The height of map window to set in the context document
|
177
|
*/
|
178
|
this.setWindowHeight=function(height) {
|
179
|
var win=this.doc.selectSingleNode("/wmc:ViewContext/wmc:General/wmc:Window");
|
180
|
win.setAttribute("height", height);
|
181
|
this.callListeners("resize");
|
182
|
}
|
183
|
|
184
|
/**
|
185
|
* Returns the width/height of the map window as an array
|
186
|
*/
|
187
|
this.getWindowSize=function() {
|
188
|
var win=this.doc.selectSingleNode("/wmc:ViewContext/wmc:General/wmc:Window");
|
189
|
return new Array(win.getAttribute("width"), win.getAttribute("height"));
|
190
|
}
|
191
|
|
192
|
/**
|
193
|
* Set the Window width and height in one function call to avoid a resize event in between
|
194
|
* setting width and height, because that causes checkBbox to be triggered, which adjusts the
|
195
|
* bbox then when it should not yet be adjusted.
|
196
|
* Added by VTS for dynamic map window resizing (AutoResize tool)
|
197
|
* @param size Size of the map window as (width, height) array
|
198
|
*/
|
199
|
this.setWindowSize=function(size) {
|
200
|
var width = size[0];
|
201
|
var height = size[1];
|
202
|
var win=this.doc.selectSingleNode("/wmc:ViewContext/wmc:General/wmc:Window");
|
203
|
win.setAttribute("width", width);
|
204
|
win.setAttribute("height", height);
|
205
|
this.callListeners("resize");
|
206
|
}
|
207
|
|
208
|
/**
|
209
|
* Returns the Layer node with the specified name from the list of nodes
|
210
|
* selected by the nodeSelectXpath from the capabilities doc.
|
211
|
* @param featureName name of the featureType to look up
|
212
|
* @return the Layer node with the specified name.
|
213
|
*/
|
214
|
this.getFeatureNode = function(featureName) {
|
215
|
return this.doc.selectSingleNode(this.nodeSelectXpath+"[wmc:Name='"+featureName+"']");
|
216
|
}
|
217
|
|
218
|
/**
|
219
|
* Returns the serverUrl for the layer passed in as the feature argument.
|
220
|
* @param requestName ignored for context docs (only GetMap supported)
|
221
|
* @param method ignored for context docs (only GET supported)
|
222
|
* @param feature the Layer node from the context doc
|
223
|
* @return URL for the GetMap request
|
224
|
*/
|
225
|
this.getServerUrl = function(requestName, method, feature) {
|
226
|
return feature.selectSingleNode("wmc:Server/wmc:OnlineResource").getAttribute("xlink:href");
|
227
|
}
|
228
|
|
229
|
/**
|
230
|
* Returns the WMS version for the layer passed in as the feature argument
|
231
|
* @param feature the Layer node from the context doc
|
232
|
* @return the WMS GetMap version for the Layer.
|
233
|
*/
|
234
|
this.getVersion = function(feature) {
|
235
|
return feature.selectSingleNode("wmc:Server").getAttribute("version");
|
236
|
}
|
237
|
|
238
|
/**
|
239
|
* Get HTTP method for the specified feature
|
240
|
* @param feature the Layer node from the context doc
|
241
|
* @return the HTTP method to get the feature with
|
242
|
*/
|
243
|
this.getMethod = function(feature) {
|
244
|
return feature.selectSingleNode("wmc:Server/wmc:OnlineResource").getAttribute("wmc:method");
|
245
|
}
|
246
|
|
247
|
/**
|
248
|
* Method to get a list of queryable layers
|
249
|
* @return the list with queryable layers
|
250
|
*/
|
251
|
this.getQueryableLayers = function() {
|
252
|
var listNodeArray = this.doc.selectNodes("/wmc:ViewContext/wmc:LayerList/wmc:Layer[attribute::queryable='1']");
|
253
|
return listNodeArray;
|
254
|
}
|
255
|
|
256
|
/**
|
257
|
* Method to get a list of all layers in the context doc
|
258
|
* TBD: merge this with above, passing queryable as an optional boolean param?
|
259
|
* @return the list with all layers
|
260
|
*/
|
261
|
this.getAllLayers = function() {
|
262
|
var listNodeArray = this.doc.selectNodes("/wmc:ViewContext/wmc:LayerList/wmc:Layer");
|
263
|
return listNodeArray;
|
264
|
}
|
265
|
|
266
|
/**
|
267
|
* Method to get a layer with the specified name in the context doc
|
268
|
* @param layerId the id of the layer to be returned
|
269
|
* @return the list with all layers
|
270
|
*/
|
271
|
this.getLayer = function(layerId) {
|
272
|
var layer = this.doc.selectSingleNode("/wmc:ViewContext/wmc:LayerList/wmc:Layer[@id='"+layerId+"']");
|
273
|
if (layer == null) {
|
274
|
layer = this.doc.selectSingleNode("/wmc:ViewContext/wmc:LayerList/wmc:Layer[wmc:Name='"+layerId+"']");
|
275
|
}
|
276
|
//TBD: add in time stamp
|
277
|
return layer;
|
278
|
}
|
279
|
|
280
|
/**
|
281
|
* Method to get a layer id with the specified id/name in the context doc
|
282
|
* @param layerName the name of the layer of which the id is to be returned
|
283
|
* @return the id of the layer || false
|
284
|
*/
|
285
|
this.getLayerIdByName = function(layerName) {
|
286
|
var layer = this.getLayer(layerName);
|
287
|
var id;
|
288
|
if (layer) {
|
289
|
id = layer.getAttribute("id");
|
290
|
}
|
291
|
|
292
|
return id || false;
|
293
|
}
|
294
|
|
295
|
/**
|
296
|
* Method to add a Layer to the LayerList
|
297
|
* @param layerNode the Layer node from another context doc or capabiltiies doc
|
298
|
*/
|
299
|
this.addLayer = function(objRef, layerNode) {
|
300
|
|
301
|
var parentNode = objRef.doc.selectSingleNode("/wmc:ViewContext/wmc:LayerList");
|
302
|
parentNode.appendChild(layerNode);
|
303
|
|
304
|
// Generate layer id if layer doesn't have an id
|
305
|
if (!layerNode.getAttribute("id")) {
|
306
|
var randomNumber = Math.round(10000 * Math.random());
|
307
|
id = Mapbuilder.getProperty(layerNode, "wmc:Name") + "_" + randomNumber;
|
308
|
layerNode.setAttribute("id", id);
|
309
|
}
|
310
|
|
311
|
objRef.modified = true;
|
312
|
//objRef.callListeners("refresh");
|
313
|
}
|
314
|
this.addFirstListener( "addLayer", this.addLayer, this );
|
315
|
|
316
|
/**
|
317
|
* Method to add a Sld tag to the StyleList
|
318
|
* @param layerName the Layer name from another context doc or capabiltiies doc
|
319
|
*/
|
320
|
this.addSLD = function(objRef,sldNode) {
|
321
|
// alert("context addSLD : "+objRef.id);
|
322
|
var layerName=Mapbuilder.getProperty(sldNode, "//Name");
|
323
|
var parentNode = objRef.doc.selectSingleNode("//wmc:Layer[wmc:Name='"+layerName+"']");
|
324
|
parentNode.appendChild(sldNode.cloneNode(true));
|
325
|
objRef.modified = true;
|
326
|
var attribs=[];
|
327
|
attribs["sld_body"]=(new XMLSerializer()).serializeToString(objRef.doc.selectSingleNode("//wmc:Layer[wmc:Name='"+layerName+"']/wmc:StyleList/wmc:Style/wmc:SLD/wmc:StyledLayerDescriptor"));
|
328
|
objRef.map.mbMapPane.refreshLayer(objRef.map.mbMapPane,layerName,attribs);
|
329
|
|
330
|
}
|
331
|
this.addFirstListener( "addSLD", this.addSLD, this );
|
332
|
|
333
|
/**
|
334
|
* Method to remove a Layer from the LayerList
|
335
|
* @param layerId the Layer to be deleted
|
336
|
*/
|
337
|
this.deleteLayer = function(objRef, layerId) {
|
338
|
var deletedNode = objRef.getLayer(layerId);
|
339
|
if (!deletedNode) {
|
340
|
alert(mbGetMessage("nodeNotFound", layerId));
|
341
|
return;
|
342
|
}
|
343
|
deletedNode.parentNode.removeChild(deletedNode);
|
344
|
objRef.modified = true;
|
345
|
}
|
346
|
this.addFirstListener( "deleteLayer", this.deleteLayer, this );
|
347
|
|
348
|
/**
|
349
|
* Method to move a Layer in the LayerList up
|
350
|
* @param layerId the layer to be moved
|
351
|
*/
|
352
|
this.moveLayerUp = function(objRef, layerId) {
|
353
|
var movedNode = objRef.getLayer(layerId);
|
354
|
var sibNode = movedNode.selectSingleNode("following-sibling::*");
|
355
|
if (!sibNode) {
|
356
|
alert(mbGetMessage("cantMoveUp", layerId));
|
357
|
return;
|
358
|
}
|
359
|
movedNode.parentNode.insertBefore(sibNode,movedNode);
|
360
|
objRef.modified = true;
|
361
|
}
|
362
|
this.addFirstListener( "moveLayerUp", this.moveLayerUp, this );
|
363
|
|
364
|
/**
|
365
|
* Method to move a Layer in the LayerList down
|
366
|
* @param layerId the layer to be moved
|
367
|
*/
|
368
|
this.moveLayerDown = function(objRef, layerId) {
|
369
|
var movedNode = objRef.getLayer(layerId);
|
370
|
var listNodeArray = movedNode.selectNodes("preceding-sibling::*"); //preceding-sibling axis contains all previous siblings
|
371
|
var sibNode = listNodeArray[listNodeArray.length-1];
|
372
|
if (!sibNode) {
|
373
|
alert(mbGetMessage("cantMoveDown", layerId));
|
374
|
return;
|
375
|
}
|
376
|
movedNode.parentNode.insertBefore(movedNode,sibNode);
|
377
|
objRef.modified = true;
|
378
|
}
|
379
|
this.addFirstListener( "moveLayerDown", this.moveLayerDown, this );
|
380
|
|
381
|
/**
|
382
|
* Adds a node to the Context document extension element. The extension element
|
383
|
* will be created if it doesn't already exist.
|
384
|
* @param extensionNode the node to be appended in the extension element.
|
385
|
* @return the ndoe added to the extension element
|
386
|
*/
|
387
|
this.setExtension = function(extensionNode) {
|
388
|
var extension = this.doc.selectSingleNode("/wmc:ViewContext/wmc:General/wmc:Extension");
|
389
|
if (!extension) {
|
390
|
var general = this.doc.selectSingleNode("/wmc:ViewContext/wmc:General");
|
391
|
var newChild = createElementWithNS(this.doc,"Extension",'http://www.opengis.net/context');
|
392
|
extension = general.appendChild(newChild);
|
393
|
}
|
394
|
return extension.appendChild(extensionNode);
|
395
|
}
|
396
|
|
397
|
/**
|
398
|
* Returns the contents of the extension element
|
399
|
* @return the contents of the extension element
|
400
|
*/
|
401
|
this.getExtension = function() {
|
402
|
return this.doc.selectSingleNode("/wmc:ViewContext/wmc:General/wmc:Extension");
|
403
|
}
|
404
|
|
405
|
/**
|
406
|
* Parses a Dimension element from the Context document as a loadModel listener.
|
407
|
* This results in an XML structure with one element for each GetMap time value
|
408
|
* parameter and added to the Context extrension element.
|
409
|
* @param objRef a pointer to this object
|
410
|
*/
|
411
|
this.initTimeExtent = function( objRef ) {
|
412
|
//only the first one selected is used as the timestamp source
|
413
|
//var extentNode = objRef.doc.selectSingleNode("//wmc:Layer/wmc:Dimension[@name='time']");
|
414
|
//TBD: how to deal with multiple time dimensions in one context doc, or caps doc?
|
415
|
var timeNodes = objRef.doc.selectNodes("//wmc:Dimension[@name='time']");
|
416
|
for (var i=0; i<timeNodes.length; ++i) {
|
417
|
var extentNode = timeNodes[i];
|
418
|
objRef.timestampList = createElementWithNS(objRef.doc,"TimestampList",mbNsUrl);
|
419
|
var layerId;
|
420
|
var layerNode = extentNode.parentNode.parentNode;
|
421
|
if (layerNode.selectSingleNode("@id")) {
|
422
|
layerId = Mapbuilder.getProperty(layerNode, "@id");
|
423
|
} else {
|
424
|
layerId = Mapbuilder.getProperty(layerNode, "wmc:Name");
|
425
|
}
|
426
|
objRef.timestampList.setAttribute("layerId", layerId);
|
427
|
//alert("found time dimension, extent:"+getNodeValue(extentNode));
|
428
|
var times = getNodeValue(extentNode).split(","); //comma separated list of arguments
|
429
|
for (var j=0; j<times.length; ++j) {
|
430
|
var params = times[j].split("/"); // parses start/end/period
|
431
|
if (params.length==3) {
|
432
|
var start = setISODate(params[0]);
|
433
|
var stop = setISODate(params[1]);
|
434
|
var period = params[2];
|
435
|
var parts = period.match(/^P((\d*)Y)?((\d*)M)?((\d*)D)?T?((\d*)H)?((\d*)M)?((.*)S)?/);
|
436
|
for (var i=1; i<parts.length; ++i) {
|
437
|
if (!parts[i]) parts[i]=0;
|
438
|
}
|
439
|
//alert("start time:"+start.toString());
|
440
|
do {
|
441
|
var timestamp = createElementWithNS(objRef.doc,"Timestamp",mbNsUrl);
|
442
|
timestamp.appendChild(objRef.doc.createTextNode(getISODate(start)));
|
443
|
objRef.timestampList.appendChild(timestamp);
|
444
|
|
445
|
start.setFullYear(start.getFullYear()+parseInt(parts[2],10));
|
446
|
start.setMonth(start.getMonth()+parseInt(parts[4],10));
|
447
|
start.setDate(start.getDate()+parseInt(parts[6],10));
|
448
|
start.setHours(start.getHours()+parseInt(parts[8],10));
|
449
|
start.setMinutes(start.getMinutes()+parseInt(parts[10],10));
|
450
|
start.setSeconds(start.getSeconds()+parseFloat(parts[12]));
|
451
|
//alert("time:"+start.toString());
|
452
|
} while(start.getTime() <= stop.getTime());
|
453
|
|
454
|
} else {
|
455
|
//output single date value
|
456
|
var timestamp = createElementWithNS(objRef.doc,"Timestamp",mbNsUrl);
|
457
|
timestamp.appendChild(objRef.doc.createTextNode(times[j]));
|
458
|
objRef.timestampList.appendChild(timestamp);
|
459
|
}
|
460
|
}
|
461
|
objRef.setExtension(objRef.timestampList);
|
462
|
}
|
463
|
}
|
464
|
this.addFirstListener( "loadModel", this.initTimeExtent, this );
|
465
|
|
466
|
/**
|
467
|
* clear the time extent created by initTimeExtent
|
468
|
* @param objRef reference to this model
|
469
|
*/
|
470
|
this.clearTimeExtent = function( objRef ) {
|
471
|
var tsList = objRef.timestampList;
|
472
|
if (tsList) {
|
473
|
tsList.parentNode.removeChild(tsList);
|
474
|
}
|
475
|
}
|
476
|
this.addListener("newModel", this.clearTimeExtent, this);
|
477
|
|
478
|
/**
|
479
|
* Returns the current timestamp value.
|
480
|
* @param layerId the name of the Layer from which the timestamp list was generated
|
481
|
* @return the current timestamp value.
|
482
|
*/
|
483
|
this.getCurrentTimestamp = function( layerId ) {
|
484
|
var index = this.getParam("timestamp");
|
485
|
return getNodeValue(this.timestampList.childNodes[index]);
|
486
|
}
|
487
|
|
488
|
// PL -BRGM
|
489
|
/**
|
490
|
* Change a Layer's opacity
|
491
|
* @param layerId The name of the layer that is to be changed
|
492
|
* @param Opacity Value of the opacity
|
493
|
*/
|
494
|
this.setOpacity=function(layerId, Opacity){
|
495
|
// Set the hidden attribute in the Context
|
496
|
var layer = this.getLayer(layerId);
|
497
|
if (layer) layer.setAttribute("opacity", Opacity);
|
498
|
// Call the listeners
|
499
|
this.callListeners("opacity", layerId);
|
500
|
}
|
501
|
|
502
|
/**
|
503
|
* Get the layer's opacity attribute value.
|
504
|
* @param layerId The name of the layer that is to be changed
|
505
|
* @return hidden String with the value; 1=hidden, 0=visible.
|
506
|
*/
|
507
|
this.getOpacity=function(layerId){
|
508
|
var opacity=1;
|
509
|
var layer = this.getLayer(layerId);
|
510
|
if (layer) opacity = layer.getAttribute("opacity");
|
511
|
return opacity;
|
512
|
}
|
513
|
// PL -END
|
514
|
}
|