[76] | 1 | /** |
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| 2 | * Copyright (c) 2008-2010 The Open Source Geospatial Foundation |
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| 3 | * |
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| 4 | * Published under the BSD license. |
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| 5 | * See http://svn.geoext.org/core/trunk/geoext/license.txt for the full text |
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| 6 | * of the license. |
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| 7 | */ |
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| 8 | |
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| 9 | /** |
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| 10 | * @include GeoExt/widgets/tree/LayerLoader.js |
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| 11 | */ |
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| 12 | Ext.namespace("GeoExt.tree"); |
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| 13 | |
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| 14 | /** api: (define) |
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| 15 | * module = GeoExt.tree |
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| 16 | * class = LayerContainer |
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| 17 | * base_link = `Ext.tree.AsyncTreeNode <http://dev.sencha.com/deploy/dev/docs/?class=Ext.tree.AsyncTreeNode>`_ |
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| 18 | */ |
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| 19 | |
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| 20 | /** api: constructor |
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| 21 | * .. class:: LayerContainer |
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| 22 | * |
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| 23 | * A subclass of ``Ext.tree.AsyncTreeNode`` that will collect all layers of an |
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| 24 | * OpenLayers map. Only layers that have displayInLayerSwitcher set to true |
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| 25 | * will be included. The childrens' iconCls defaults to |
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| 26 | * "gx-tree-layer-icon". |
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| 27 | * |
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| 28 | * Note: if this container is loaded by an ``Ext.tree.TreeLoader``, the |
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| 29 | * ``applyLoader`` config option of that loader needs to be set to |
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| 30 | * "false". Also note that the list of available uiProviders will be |
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| 31 | * taken from the ownerTree if this container's loader is configured |
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| 32 | * without one. |
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| 33 | * |
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| 34 | * To use this node type in ``TreePanel`` config, set nodeType to |
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| 35 | * "gx_layercontainer". |
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| 36 | */ |
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| 37 | GeoExt.tree.LayerContainer = Ext.extend(Ext.tree.AsyncTreeNode, { |
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| 38 | |
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| 39 | /** api: config[loader] |
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| 40 | * :class:`GeoExt.tree.LayerLoader` or ``Object`` The loader to use with |
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| 41 | * this container. If an ``Object`` is provided, a |
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| 42 | * :class:`GeoExt.tree.LayerLoader`, configured with the the properties |
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| 43 | * from the provided object, will be created. |
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| 44 | */ |
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| 45 | |
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| 46 | /** api: config[layerStore] |
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| 47 | * :class:`GeoExt.data.LayerStore` The layer store containing layers to be |
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| 48 | * displayed in the container. If loader is not provided or provided as |
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| 49 | * ``Object``, this property will be set as the store option of the |
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| 50 | * loader. Otherwise it will be ignored. |
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| 51 | */ |
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| 52 | |
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| 53 | /** private: method[constructor] |
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| 54 | * Private constructor override. |
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| 55 | */ |
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| 56 | constructor: function(config) { |
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| 57 | config = Ext.applyIf(config || {}, { |
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| 58 | text: "Layers" |
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| 59 | }); |
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| 60 | this.loader = config.loader instanceof GeoExt.tree.LayerLoader ? |
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| 61 | config.loader : |
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| 62 | new GeoExt.tree.LayerLoader(Ext.applyIf(config.loader || {}, { |
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| 63 | store: config.layerStore |
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| 64 | })); |
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| 65 | |
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| 66 | GeoExt.tree.LayerContainer.superclass.constructor.call(this, config); |
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| 67 | }, |
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| 68 | |
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| 69 | /** private: method[recordIndexToNodeIndex] |
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| 70 | * :param index: ``Number`` The record index in the layer store. |
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| 71 | * :return: ``Number`` The appropriate child node index for the record. |
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| 72 | */ |
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| 73 | recordIndexToNodeIndex: function(index) { |
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| 74 | var store = this.loader.store; |
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| 75 | var count = store.getCount(); |
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| 76 | var nodeCount = this.childNodes.length; |
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| 77 | var nodeIndex = -1; |
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| 78 | for(var i=count-1; i>=0; --i) { |
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| 79 | if(this.loader.filter(store.getAt(i)) === true) { |
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| 80 | ++nodeIndex; |
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| 81 | if(index === i || nodeIndex > nodeCount-1) { |
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| 82 | break; |
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| 83 | } |
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| 84 | } |
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| 85 | } |
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| 86 | return nodeIndex; |
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| 87 | }, |
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| 88 | |
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| 89 | /** private: method[destroy] |
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| 90 | */ |
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| 91 | destroy: function() { |
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| 92 | delete this.layerStore; |
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| 93 | GeoExt.tree.LayerContainer.superclass.destroy.apply(this, arguments); |
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| 94 | } |
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| 95 | }); |
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| 96 | |
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| 97 | /** |
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| 98 | * NodeType: gx_layercontainer |
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| 99 | */ |
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| 100 | Ext.tree.TreePanel.nodeTypes.gx_layercontainer = GeoExt.tree.LayerContainer; |
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