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source: trunk/workshop-routing-foss4g/web/GeoExt/docs/_sources/lib/GeoExt/widgets/form/SearchAction.txt @ 76

Revision 76, 3.1 KB checked in by djay, 10 years ago (diff)

Ajout du répertoire web

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1
2.. currentmodule:: GeoExt.form
3
4:class:`GeoExt.form.SearchAction`
5================================================================================
6
7
8.. cssclass:: meta
9
10
11Extends
12    * `Ext.form.Action <http://dev.sencha.com/deploy/dev/docs/?class=Ext.form.Action>`_
13   
14
15
16
17
18
19
20.. class:: SearchAction(form, options)
21
22    A specific ``Ext.form.Action`` to be used when using a form to do
23    trigger search requests througn an ``OpenLayers.Protocol``.
24
25    Arguments:
26
27    * form ``Ext.form.BasicForm`` A basic form instance.
28    * options ``Object`` Options passed to the protocol'read method
29          One can add an abortPrevious property to these options, if set
30          to true, the abort method will be called on the protocol if
31          there's a pending request.
32
33    When run this action builds an ``OpenLayers.Filter`` from the form
34    and passes this filter to its protocol's read method. The form fields
35    must be named after a specific convention, so that an appropriate
36    ``OpenLayers.Filter.Comparison`` filter is created for each
37    field.
38
39    For example a field with the name ``foo__like`` would result in an
40    ``OpenLayers.Filter.Comparison`` of type
41    ``OpenLayers.Filter.Comparison.LIKE`` being created.
42
43    Here is the convention:
44
45    * ``<name>__eq: OpenLayers.Filter.Comparison.EQUAL_TO``
46    * ``<name>__ne: OpenLayers.Filter.Comparison.NOT_EQUAL_TO``
47    * ``<name>__lt: OpenLayers.Filter.Comparison.LESS_THAN``
48    * ``<name>__le: OpenLayers.Filter.Comparison.LESS_THAN_OR_EQUAL_TO``
49    * ``<name>__gt: OpenLayers.Filter.Comparison.GREATER_THAN``
50    * ``<name>__ge: OpenLayers.Filter.Comparison.GREATER_THAN_OR_EQUAL_TO``
51    * ``<name>__like: OpenLayers.Filter.Comparison.LIKE``
52
53    In most cases your would not directly create ``GeoExt.form.SearchAction``
54    objects, but use :class:`GeoExt.form.FormPanel` instead.
55
56
57
58Example Use
59-----------
60
61Sample code showing how to use a GeoExt SearchAction with an Ext form panel:
62
63.. code-block:: javascript
64
65    var formPanel = new Ext.form.Panel({
66        renderTo: "formpanel",
67        items: [{
68            xtype: "textfield",
69            name: "name__like",
70            value: "mont"
71        }, {
72            xtype: "textfield",
73            name: "elevation__ge",
74            value: "2000"
75        }]
76    });
77
78    var searchAction = new GeoExt.form.SearchAction(formPanel.getForm(), {
79        protocol: new OpenLayers.Protocol.WFS({
80            url: "http://publicus.opengeo.org/geoserver/wfs",
81            featureType: "tasmania_roads",
82            featureNS: "http://www.openplans.org/topp"
83        }),
84        abortPrevious: true
85    });
86
87    formPanel.getForm().doAction(searchAction, {
88        callback: function(response) {
89            // response.features includes the features read
90            // from the server through the protocol
91        }
92    });
93
94   
95
96
97
98
99Public Properties
100-----------------
101
102Public properties in addition to those
103listed for `Ext.form.Action <http://dev.sencha.com/deploy/dev/docs/?class=Ext.form.Action>`_.
104
105
106.. attribute:: SearchAction.response
107
108    ``OpenLayers.Protocol.Response`` A reference to the response
109    resulting from the search request. Read-only.
110
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