source:
trunk/workshop-routing-foss4g/web/GeoExt/docs/_sources/lib/GeoExt/widgets/tree/LayerParamLoader.txt
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| Revision 76, 2.2 KB checked in by djay, 14 years ago (diff) | |
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| 1 | |
| 2 | .. currentmodule:: GeoExt.tree |
| 3 | |
| 4 | :class:`GeoExt.tree.LayerParamLoader` |
| 5 | ================================================================================ |
| 6 | |
| 7 | |
| 8 | .. cssclass:: meta |
| 9 | |
| 10 | |
| 11 | Extends |
| 12 | * `Ext.util.Observable <http://dev.sencha.com/deploy/dev/docs/?class=Ext.util.Observable>`_ |
| 13 | |
| 14 | |
| 15 | |
| 16 | |
| 17 | |
| 18 | |
| 19 | |
| 20 | .. class:: LayerParamLoader |
| 21 | |
| 22 | A loader that creates children from its node's layer |
| 23 | (``OpenLayers.Layer.HTTPRequest``) by items in one of the values in |
| 24 | the layer's params object. |
| 25 | |
| 26 | |
| 27 | |
| 28 | |
| 29 | |
| 30 | Config Options |
| 31 | -------------- |
| 32 | |
| 33 | Configuration properties in addition to |
| 34 | those listed for `Ext.util.Observable <http://dev.sencha.com/deploy/dev/docs/?class=Ext.util.Observable>`_. |
| 35 | |
| 36 | |
| 37 | .. describe:: delimiter |
| 38 | |
| 39 | ``String`` Delimiter of the ``param``'s value's items. Default is |
| 40 | ``,`` (comma). If the ``param``'s value is an array, this property has |
| 41 | no effect. |
| 42 | |
| 43 | .. describe:: param |
| 44 | |
| 45 | ``String`` Key for a param (key-value pair in the params object of the |
| 46 | layer) that this loader uses to create childnodes from its items. The |
| 47 | value can either be an ``Array`` or a ``String``, delimited by the |
| 48 | character (or string) provided as ``delimiter`` config option. |
| 49 | |
| 50 | |
| 51 | |
| 52 | |
| 53 | |
| 54 | |
| 55 | Public Methods |
| 56 | -------------- |
| 57 | |
| 58 | Public methods in addition to those |
| 59 | listed for `Ext.util.Observable <http://dev.sencha.com/deploy/dev/docs/?class=Ext.util.Observable>`_. |
| 60 | |
| 61 | |
| 62 | .. method:: LayerParamLoader.createNode |
| 63 | |
| 64 | :param attr: ``Object`` attributes for the new node |
| 65 | |
| 66 | Override this function for custom TreeNode node implementation, or to |
| 67 | modify the attributes at creation time. |
| 68 | |
| 69 | |
| 70 | |
| 71 | |
| 72 | Events |
| 73 | ------ |
| 74 | |
| 75 | Events in addition to those |
| 76 | listed for `Ext.util.Observable <http://dev.sencha.com/deploy/dev/docs/?class=Ext.util.Observable>`_. |
| 77 | |
| 78 | |
| 79 | .. describe:: beforeload |
| 80 | |
| 81 | Triggered before loading children. Return false to avoid |
| 82 | loading children. |
| 83 | |
| 84 | Listener arguments: |
| 85 | |
| 86 | * loader - :class:`GeoExt.tree.LayerLoader` this loader |
| 87 | * node - ``Ex.tree.TreeNode`` the node that this loader is |
| 88 | configured with |
| 89 | |
| 90 | .. describe:: load |
| 91 | |
| 92 | Triggered after children were loaded. |
| 93 | |
| 94 | Listener arguments: |
| 95 | |
| 96 | * loader - :class:`GeoExt.tree.LayerLoader` this loader |
| 97 | * node - ``Ex.tree.TreeNode`` the node that this loader is |
| 98 | configured with |
| 99 | |
| 100 | |
| 101 |
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