1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
/* main map */
/* availaible map layers */
var layerMapnik = new OpenLayers.Layer.OSM.Mapnik('Classic');
var cyclemap = new OpenLayers.Layer.OSM.CycleMap("Cycle map", {
displayOutsideMaxExtent: true,
wrapDateLine: true});
/* default size and offset for icon */
var size = new OpenLayers.Size(21, 25);
var offset = new OpenLayers.Pixel(-(size.w/2), -size.h);
/* define global variable */
var markers = new Array();
var layerMarkers;
var currentPopup;
var currentFeature;
var clicked = false;
/* show a popup */
function showPop(feature) {
if (currentPopup != null) {
currentPopup.hide();
}
if (feature.popup == null) {
feature.popup = feature.createPopup();
map.addPopup(feature.popup);
} else {
feature.popup.toggle();
}
currentPopup = feature.popup;
}
/* load markers with an AJAX request */
function loadMarkers(){
/* get checked categories */
inputs = window.document.forms["frm_categories"];
var categories = '';
for (var i = 0; i < inputs.length; i++) {
input = inputs[i];
if (input.checked
&& input.name.substring('category_'.length, 0) == 'category_'){
id = input.name.substring('category_'.length, input.name.length);
if(categories) categories += '_';
categories += id;
}
}
/* 0 stand for all categories */
if (!categories) categories = '0';
var uri = "/chimere/getMarkers/" + categories;
OpenLayers.loadURL(uri, '', this, setMarkers);
}
/* update the marker layers from an http response GeoJSON */
function setMarkers(response){
if(layerMarkers) layerMarkers.destroy();
if (response.responseText.indexOf('no results') == -1) {
/* clean the marker layer */
if (currentPopup) {
currentPopup.hide();
hideDetail();
}
layerMarkers = new OpenLayers.Layer.Markers('POIs');
map.addLayer(layerMarkers);
layerMarkers.setOpacity(0.8);
var json = new OpenLayers.Format.JSON();
var markers_pt = json.read(response.responseText);
/* load every marker */
for (var i = 0; i < markers_pt.features.length; i++) {
putMarker(markers_pt.features[i]);
}
/*
var geojson = new OpenLayers.Format.GeoJSON();
var markers_pt = geojson.read(response.responseText);
for (var i = 0; i < markers_pt.length; i++) {
putMarker2(markers_pt[i]);
}*/
}
}
/* put a marker on the map */
function putMarker(mark) {
/* initialise a new feature with appropriate attribute for setting a
marker */
lat = mark.geometry.coordinates[1];
lon = mark.geometry.coordinates[0];
iconclone = new OpenLayers.Icon(media_path + mark.properties.icon_path,
size, offset);
var feature = new OpenLayers.Feature(markers,
new OpenLayers.LonLat(lon, lat).transform(epsg_display_projection,
epsg_projection),
{icon:iconclone});
/*feature.closeBox = false;*/
feature.pk = mark.properties.pk;
feature.popupClass = OpenLayers.Class(OpenLayers.Popup.FramedCloud);
feature.data.popupContentHTML = "<div class='cloud'>" + mark.properties.name + "<br/> </div>";
feature.data.overflow = 'hidden';
var marker = feature.createMarker();
/* manage markers events */
var markerClick = function (evt) {
currentFeature = this;
if (clicked) {
if (currentPopup == this.popup) {
this.popup.hide();
clicked = false;
hideDetail();
} else {
currentPopup.hide();
showPop(this);
updateDetail(this.pk);
}
} else {
showPop(this);
clicked = true;
updateDetail(this.pk);
}
OpenLayers.Event.stop(evt);
};
var markerOver = function (evt) {
document.body.style.cursor='pointer';
OpenLayers.Event.stop(evt);
};
var markerOut = function (evt) {
document.body.style.cursor='auto';
OpenLayers.Event.stop(evt);
};
marker.events.register('mousedown', feature, markerClick);
marker.events.register('mouseover', feature, markerOver);
marker.events.register('mouseout', feature, markerOut);
layerMarkers.addMarker(marker);
return feature;
}
/* update current detail panel with an AJAX request */
function updateDetail(pk){
var uri = "/chimere/getDetail/" + pk;
OpenLayers.loadURL(uri, '', this, setDetail);
}
/* update the detail panel from an http response */
function setDetail(response){
if (response.responseText.indexOf('no results') == -1) {
document.getElementById('detail_content').innerHTML = response.responseText;
}
}
/* hide content of detail panel */
function hideDetail(){
document.getElementById('detail_content').innerHTML = '';
}
/* main initialisation function */
function init(){
/* set the main map */
map = new OpenLayers.Map ('map', {
controls:[new OpenLayers.Control.Navigation(),
new OpenLayers.Control.PanZoomBar(),
new OpenLayers.Control.ScaleLine()],
maxExtent: maxExtent,
maxResolution: 156543.0399,
units: 'm',
projection: new OpenLayers.Projection('EPSG:4326')
});
/*projection: new OpenLayers.Projection('EPSG:900913'),
displayProjection: new OpenLayers.Projection('EPSG:4326')*/
map.addLayers([layerMapnik, cyclemap]);
loadMarkers();
map.setCenter(centerLonLat, 12);
}
|
