leafletjs-datalet.html
6.53 KB
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
173
174
<!--
@license
The MIT License (MIT)
Copyright (c) 2015 Dipartimento di Informatica - Università di Salerno - Italy
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
-->
<!--
* Developed by :
* ROUTE-TO-PA Project - grant No 645860. - www.routetopa.eu
*
-->
<link rel="import" href="../base-ajax-json-alasql-datalet/base-ajax-json-alasql-datalet.html">
<!--
`leafletjs-datalet` is a map datalet based on open source project leafletjs <http://leafletjs.com/>
Example:
<leafletjs-datalet
data-url="http://ckan.routetopa.eu/api/action/datastore_search?resource_id=#"
fields='["field1","field2"]'>
</leafletjs-datalet>
@element leafletjs-datalet
@status v0.1
@demo demo/index.html
@group datalets
-->
<dom-module name="leafletjs-datalet">
<template>
<link rel="stylesheet" href="leafletsjs/leaflet.css" />
<style>
#leafletjs {height: 600px;}
</style>
<div id="leafletjs"></div>
<base-ajax-json-alasql-datalet data-url="{{dataUrl}}" fields="{{fields}}" data="{{data}}" title="{{title}}" description="{{description}}"></base-ajax-json-alasql-datalet>
</template>
<script src="leafletsjs/leaflet.js"></script>
<script>
var leafletjsBehavior = {
/**
* Read markers coordinates from the data object and add the marker to the map.
* Call a method for the map redraw and set the viewport in order to fit all the markers in the viewport..
*
* @method transformData
*/
presentData: function(){
var t = this;
try{
this._component.map = L.map(this._component.$.leafletjs).setView([0, 0], 13, {reset:true});
}catch(e){}
L.tileLayer('http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
maxZoom: 18,
attribution: 'Map data © <a href="http://openstreetmap.org">OpenStreetMap</a> contributors'
}).addTo(this._component.map);
setTimeout(function() {
L.Icon.Default.imagePath = 'http://services.routetopa.eu/DEEalerProvider/COMPONENTS/datalets/leafletjs-datalet/leafletsjs/images';
var coordinates = [];
var isArray = t.data[0].data[0].constructor === Array;
for(var i=0; i<t.data[0].data.length; i++)
{
if(isArray)
coordinates.push([parseFloat(t.data[0].data[i][0]), parseFloat(t.data[0].data[i][1])]);
else
coordinates.push([parseFloat(t.data[0].data[i]), parseFloat(t.data[1].data[i])]);
var marker = L.marker([coordinates[i][0], coordinates[i][1]]).addTo(t._component.map);
if(t.data.length > 2)
{
if(t.data[t.data.length - 1].data[i].match(new RegExp("^(http[s]?:\\/\\/(www\\.)?|ftp:\\/\\/(www\\.)?|www\\.){1}([0-9A-Za-z-\\.@:%_\+~#=]+)+((\\.[a-zA-Z]{2,3})+)(/(.)*)?(\\?(.)*)?")))
var popup = L.popup().setContent('<image height="100" width="100" src="' + t.data[t.data.length - 1].data[i] + '" />');
else
var popup = L.popup().setContent('<span>' + t.data[t.data.length - 1].data[i] + '</span>');
marker.bindPopup(popup);
}
}
t._component.map._onResize();
t._component.map.invalidateSize(false);
t._component.map.fitBounds(coordinates);
}, 1)
}
};
Polymer({
is : 'leafletjs-datalet',
properties : {
/**
* Store a reference to the leafletjs map object created in 'ready' callback
* @attribute map
* @type Object
*/
map :
{
type: Object,
value:null
},
/**
* An Array with all the markers extracted from the dataset
* @attribute markers
* @type Array
*/
markers :
{
type : Array,
value : []
},
/**
* It's the component behavior
*
* @attribute behavior
* @type Object
* @default {}
*/
behavior : {
type : Object,
value : {}
}
},
/**
* 'ready' callback create the map object, set the tileLayer to openstreetmap and the default icon image path.
* Moreover extend the leafletjsComponentBehavior with BaseDataletBehavior, WorkcycleBehavior and leafletjsBehavior
* and run the Datalet workcycle.
*
* @method ready
*/
attached: function(){
this.behavior = $.extend(true, {}, BaseDataletBehavior, WorkcycleBehavior, AjaxJsonAlasqlBehavior, leafletjsBehavior);
this.behavior.init(this);
}
});
</script>
</dom-module>