source:
trunk/workshop-routing-foss4g/web/GeoExt/docs/_sources/lib/GeoExt/data/LayerReader.txt
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2 | .. currentmodule:: GeoExt.data | |
3 | ||
4 | :class:`GeoExt.data.LayerReader` | |
5 | ================================================================================ | |
6 | ||
7 | ||
8 | .. cssclass:: meta | |
9 | ||
10 | ||
11 | Extends | |
12 | * `Ext.data.DataReader <http://dev.sencha.com/deploy/dev/docs/?class=Ext.data.DataReader>`_ | |
13 | ||
14 | ||
15 | ||
16 | ||
17 | ||
18 | ||
19 | ||
20 | .. class:: LayerReader(meta, recordType) | |
21 | ||
22 | Data reader class to create an array of | |
23 | :class:`GeoExt.data.LayerRecord` objects from an array of | |
24 | ``OpenLayers.Layer`` objects for use in a | |
25 | :class:`GeoExt.data.LayerStore` object. | |
26 | ||
27 | ||
28 | ||
29 | Example Use | |
30 | ----------- | |
31 | ||
32 | Sample using a reader to create records from an array of layers: | |
33 | ||
34 | .. code-block:: javascript | |
35 | ||
36 | var reader = new GeoExt.data.LayerReader(); | |
37 | var layerData = reader.readRecords(map.layers); | |
38 | var numRecords = layerData.totalRecords; | |
39 | var layerRecords = layerData.records; | |
40 | ||
41 | ||
42 | ||
43 | ||
44 | ||
45 | ||
46 | ||
47 | ||
48 | Public Methods | |
49 | -------------- | |
50 | ||
51 | Public methods in addition to those | |
52 | listed for `Ext.data.DataReader <http://dev.sencha.com/deploy/dev/docs/?class=Ext.data.DataReader>`_. | |
53 | ||
54 | ||
55 | .. method:: LayerReader.readRecords | |
56 | ||
57 | :param layers: ``Array(OpenLayers.Layer)`` List of layers for creating | |
58 | records. | |
59 | :return: ``Object`` An object with ``records`` and ``totalRecords`` | |
60 | properties. | |
61 | ||
62 | From an array of ``OpenLayers.Layer`` objects create a data block | |
63 | containing :class:`GeoExt.data.LayerRecord` objects. | |
64 | ||
65 | ||
66 | ||
67 | ||
68 |
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