|
1
|
/*
|
|
2
|
License: LGPL as per: http://www.gnu.org/copyleft/lesser.html
|
|
3
|
Dependancies: Context
|
|
4
|
$Id: ZoomToAoi.js 3821 2008-02-01 13:58:30Z ahocevar $
|
|
5
|
*/
|
|
6
|
|
|
7
|
// Ensure this object's dependancies are loaded.
|
|
8
|
mapbuilder.loadScript(baseDir+"/tool/ToolBase.js");
|
|
9
|
|
|
10
|
/**
|
|
11
|
* Controller for the locator map widget.
|
|
12
|
* Specify the context that this widget follows by setting the targetModel
|
|
13
|
* property in config.
|
|
14
|
* This will display the AOI of the target model using the AoiBox tool.
|
|
15
|
* This will also process mouse events (click and dragbox) to recenter the
|
|
16
|
* target model and includes coordinate projection transformations if required.
|
|
17
|
* Checking for extent limits is not yet implemented.
|
|
18
|
*
|
|
19
|
* WARNING: it is recommended to use the OverviewMap widget. However since the behavior
|
|
20
|
* is slightly different from this widget, this one is still available.
|
|
21
|
* See also MAP-300
|
|
22
|
* @deprecated
|
|
23
|
* @constructor
|
|
24
|
* @base ToolBase
|
|
25
|
* @author Adair
|
|
26
|
* @param toolNode The tool node from the config document for this tool
|
|
27
|
* @param model Reference to the widget object that creates this tool
|
|
28
|
*/
|
|
29
|
function ZoomToAoi(toolNode, model) {
|
|
30
|
ToolBase.apply(this, new Array(toolNode, model));
|
|
31
|
|
|
32
|
/**
|
|
33
|
* Target model loadModel change listener. This resets the projection objects
|
|
34
|
* if the target model changes.
|
|
35
|
* @param tool Pointer to this ZoomToAoi object.
|
|
36
|
*/
|
|
37
|
this.initProj = function( toolRef ) {
|
|
38
|
if( toolRef.model.doc && toolRef.targetModel.doc ) {
|
|
39
|
if ( toolRef.model.getSRS() != toolRef.targetModel.getSRS() ) {
|
|
40
|
toolRef.model.proj = new OpenLayers.Projection( toolRef.model.getSRS() );
|
|
41
|
toolRef.targetModel.proj = new OpenLayers.Projection( toolRef.targetModel.getSRS() );
|
|
42
|
}
|
|
43
|
}
|
|
44
|
}
|
|
45
|
this.setListeners = function( toolRef ) {
|
|
46
|
toolRef.model.addListener( "loadModel", toolRef.initProj, toolRef );
|
|
47
|
toolRef.targetModel.addListener( "loadModel", toolRef.initProj, toolRef );
|
|
48
|
toolRef.initProj( toolRef );
|
|
49
|
}
|
|
50
|
this.model.addListener( "loadModel", this.setListeners, this);
|
|
51
|
|
|
52
|
/**
|
|
53
|
* Target model bbox change listener. This sets this model's AOI to be the
|
|
54
|
* same as the target model bounding box.
|
|
55
|
* @param tool Pointer to this ZoomToAoi object.
|
|
56
|
*/
|
|
57
|
this.showTargetAoi = function( tool ) {
|
|
58
|
if( tool.targetModel.doc ) {
|
|
59
|
var bbox = tool.targetModel.getBoundingBox();
|
|
60
|
var ul = new Array(bbox[0],bbox[3]);
|
|
61
|
var lr = new Array(bbox[2],bbox[1]);
|
|
62
|
if ( tool.model.getSRS() != tool.targetModel.getSRS() ) {
|
|
63
|
var ptUL=new OpenLayers.Geometry.Point(ul[0],ul[1]);
|
|
64
|
var ptLR=new OpenLayers.Geometry.Point(lr[0],lr[1]);
|
|
65
|
ptUL.transform(tool.targetModel.proj,tool.model.proj);
|
|
66
|
ptLR.transform(tool.targetModel.proj,tool.model.proj);
|
|
67
|
ul = new Array(ptUL.x,ptUL.y);
|
|
68
|
lr = new Array(ptLR.x,ptLR.y);
|
|
69
|
|
|
70
|
}
|
|
71
|
tool.model.setParam("aoi", new Array(ul, lr) );
|
|
72
|
}
|
|
73
|
}
|
|
74
|
|
|
75
|
this.firstInit = function(tool) {
|
|
76
|
tool.model.map.events.register('mouseup',tool, tool.mouseUpHandler);
|
|
77
|
tool.targetModel.addListener( "loadModel", tool.showTargetAoi, tool );
|
|
78
|
tool.targetModel.addListener( "bbox", tool.showTargetAoi, tool );
|
|
79
|
tool.showTargetAoi(tool);
|
|
80
|
}
|
|
81
|
this.model.addListener( "loadModel", this.firstInit, this );
|
|
82
|
|
|
83
|
this.clear = function(tool) {
|
|
84
|
if (tool.model.map && tool.model.map.events) {
|
|
85
|
tool.model.map.events.unregister('mouseup',tool, tool.mouseUpHandler);
|
|
86
|
}
|
|
87
|
}
|
|
88
|
this.model.addListener("clearModel", this.clear, this);
|
|
89
|
}
|
|
90
|
|
|
91
|
/**
|
|
92
|
* Process a mouse up action. This will recenter the target model's bbox
|
|
93
|
* to be equal to this model's AOI.
|
|
94
|
* @param e OpenLayers event
|
|
95
|
*/
|
|
96
|
ZoomToAoi.prototype.mouseUpHandler = function(e) {
|
|
97
|
var bbox = this.model.getParam("aoi");
|
|
98
|
var ul = bbox[0];
|
|
99
|
var lr = bbox[1];
|
|
100
|
if ( this.model.getSRS() != this.targetModel.getSRS() ) {
|
|
101
|
//TBD: convert XY to lat/long first
|
|
102
|
var ptUL=new OpenLayers.Geometry.Point(ul[0],ul[1]);
|
|
103
|
var ptLR=new OpenLayers.Geometry.Point(lr[0],lr[1]);
|
|
104
|
ptUL.transform(this.model.proj,this.targetModel.proj);
|
|
105
|
ptLR.transform(this.model.proj,this.targetModel.proj);
|
|
106
|
ul = new Array(ptUL.x,ptUL.y);
|
|
107
|
lr = new Array(ptLR.x,ptLR.y);
|
|
108
|
}
|
|
109
|
if ( ( ul[0]==lr[0] ) && ( ul[1]==lr[1] ) ) {
|
|
110
|
this.targetModel.map.setCenter(new OpenLayers.LonLat(ul[0],ul[1]));
|
|
111
|
} else {
|
|
112
|
this.targetModel.map.zoomToExtent(new OpenLayers.Bounds(ul[0], lr[1], lr[0], ul[1]));
|
|
113
|
}
|
|
114
|
}
|