1 | /** |
---|
2 | * Copyright (c) 2008-2010 The Open Source Geospatial Foundation |
---|
3 | * |
---|
4 | * Published under the BSD license. |
---|
5 | * See http://svn.geoext.org/core/trunk/geoext/license.txt for the full text |
---|
6 | * of the license. |
---|
7 | */ |
---|
8 | |
---|
9 | /** api: example[tree] |
---|
10 | * Tree Nodes |
---|
11 | * ---------- |
---|
12 | * Create all kinds of tree nodes. |
---|
13 | */ |
---|
14 | |
---|
15 | var mapPanel, tree; |
---|
16 | Ext.onReady(function() { |
---|
17 | // create a map panel with some layers that we will show in our layer tree |
---|
18 | // below. |
---|
19 | mapPanel = new GeoExt.MapPanel({ |
---|
20 | border: true, |
---|
21 | region: "center", |
---|
22 | // we do not want all overlays, to try the OverlayLayerContainer |
---|
23 | map: new OpenLayers.Map({allOverlays: false}), |
---|
24 | center: [146.1569825, -41.6109735], |
---|
25 | zoom: 6, |
---|
26 | layers: [ |
---|
27 | new OpenLayers.Layer.WMS("Global Imagery", |
---|
28 | "http://maps.opengeo.org/geowebcache/service/wms", { |
---|
29 | layers: "bluemarble" |
---|
30 | }, { |
---|
31 | buffer: 0, |
---|
32 | visibility: false |
---|
33 | } |
---|
34 | ), |
---|
35 | new OpenLayers.Layer.WMS("Tasmania State Boundaries", |
---|
36 | "http://demo.opengeo.org/geoserver/wms", { |
---|
37 | layers: "topp:tasmania_state_boundaries" |
---|
38 | }, { |
---|
39 | buffer: 0 |
---|
40 | } |
---|
41 | ), |
---|
42 | new OpenLayers.Layer.WMS("Water", |
---|
43 | "http://demo.opengeo.org/geoserver/wms", { |
---|
44 | layers: "topp:tasmania_water_bodies", |
---|
45 | transparent: true, |
---|
46 | format: "image/gif" |
---|
47 | }, { |
---|
48 | isBaseLayer: false, |
---|
49 | buffer: 0 |
---|
50 | } |
---|
51 | ), |
---|
52 | new OpenLayers.Layer.WMS("Cities", |
---|
53 | "http://demo.opengeo.org/geoserver/wms", { |
---|
54 | layers: "topp:tasmania_cities", |
---|
55 | transparent: true, |
---|
56 | format: "image/gif" |
---|
57 | }, { |
---|
58 | isBaseLayer: false, |
---|
59 | buffer: 0 |
---|
60 | } |
---|
61 | ), |
---|
62 | new OpenLayers.Layer.WMS("Tasmania Roads", |
---|
63 | "http://demo.opengeo.org/geoserver/wms", { |
---|
64 | layers: "topp:tasmania_roads", |
---|
65 | transparent: true, |
---|
66 | format: "image/gif" |
---|
67 | }, { |
---|
68 | isBaseLayer: false, |
---|
69 | buffer: 0 |
---|
70 | } |
---|
71 | ), |
---|
72 | // create a group layer (with several layers in the "layers" param) |
---|
73 | // to show how the LayerParamLoader works |
---|
74 | new OpenLayers.Layer.WMS("Tasmania (Group Layer)", |
---|
75 | "http://demo.opengeo.org/geoserver/wms", { |
---|
76 | layers: [ |
---|
77 | "topp:tasmania_state_boundaries", |
---|
78 | "topp:tasmania_water_bodies", |
---|
79 | "topp:tasmania_cities", |
---|
80 | "topp:tasmania_roads" |
---|
81 | ], |
---|
82 | transparent: true, |
---|
83 | format: "image/gif" |
---|
84 | }, { |
---|
85 | isBaseLayer: false, |
---|
86 | buffer: 0, |
---|
87 | // exclude this layer from layer container nodes |
---|
88 | displayInLayerSwitcher: false, |
---|
89 | visibility: false |
---|
90 | } |
---|
91 | ) |
---|
92 | ] |
---|
93 | }); |
---|
94 | |
---|
95 | // create our own layer node UI class, using the TreeNodeUIEventMixin |
---|
96 | var LayerNodeUI = Ext.extend(GeoExt.tree.LayerNodeUI, new GeoExt.tree.TreeNodeUIEventMixin()); |
---|
97 | |
---|
98 | // using OpenLayers.Format.JSON to create a nice formatted string of the |
---|
99 | // configuration for editing it in the UI |
---|
100 | var treeConfig = new OpenLayers.Format.JSON().write([{ |
---|
101 | nodeType: "gx_baselayercontainer" |
---|
102 | }, { |
---|
103 | nodeType: "gx_overlaylayercontainer", |
---|
104 | expanded: true, |
---|
105 | // render the nodes inside this container with a radio button, |
---|
106 | // and assign them the group "foo". |
---|
107 | loader: { |
---|
108 | baseAttrs: { |
---|
109 | radioGroup: "foo", |
---|
110 | uiProvider: "layernodeui" |
---|
111 | } |
---|
112 | } |
---|
113 | }, { |
---|
114 | nodeType: "gx_layer", |
---|
115 | layer: "Tasmania (Group Layer)", |
---|
116 | isLeaf: false, |
---|
117 | // create subnodes for the layers in the LAYERS param. If we assign |
---|
118 | // a loader to a LayerNode and do not provide a loader class, a |
---|
119 | // LayerParamLoader will be assumed. |
---|
120 | loader: { |
---|
121 | param: "LAYERS" |
---|
122 | } |
---|
123 | }], true); |
---|
124 | |
---|
125 | // create the tree with the configuration from above |
---|
126 | tree = new Ext.tree.TreePanel({ |
---|
127 | border: true, |
---|
128 | region: "west", |
---|
129 | title: "Layers", |
---|
130 | width: 200, |
---|
131 | split: true, |
---|
132 | collapsible: true, |
---|
133 | collapseMode: "mini", |
---|
134 | autoScroll: true, |
---|
135 | plugins: [ |
---|
136 | new GeoExt.plugins.TreeNodeRadioButton({ |
---|
137 | listeners: { |
---|
138 | "radiochange": function(node) { |
---|
139 | alert(node.text + " is now the active layer."); |
---|
140 | } |
---|
141 | } |
---|
142 | }) |
---|
143 | ], |
---|
144 | loader: new Ext.tree.TreeLoader({ |
---|
145 | // applyLoader has to be set to false to not interfer with loaders |
---|
146 | // of nodes further down the tree hierarchy |
---|
147 | applyLoader: false, |
---|
148 | uiProviders: { |
---|
149 | "layernodeui": LayerNodeUI |
---|
150 | } |
---|
151 | }), |
---|
152 | root: { |
---|
153 | nodeType: "async", |
---|
154 | // the children property of an Ext.tree.AsyncTreeNode is used to |
---|
155 | // provide an initial set of layer nodes. We use the treeConfig |
---|
156 | // from above, that we created with OpenLayers.Format.JSON.write. |
---|
157 | children: Ext.decode(treeConfig) |
---|
158 | }, |
---|
159 | listeners: { |
---|
160 | "radiochange": function(node){ |
---|
161 | alert(node.layer.name + " is now the the active layer."); |
---|
162 | } |
---|
163 | }, |
---|
164 | rootVisible: false, |
---|
165 | lines: false, |
---|
166 | bbar: [{ |
---|
167 | text: "Show/Edit Tree Config", |
---|
168 | handler: function() { |
---|
169 | treeConfigWin.show(); |
---|
170 | Ext.getCmp("treeconfig").setValue(treeConfig); |
---|
171 | } |
---|
172 | }] |
---|
173 | }); |
---|
174 | |
---|
175 | // dialog for editing the tree configuration |
---|
176 | var treeConfigWin = new Ext.Window({ |
---|
177 | layout: "fit", |
---|
178 | hideBorders: true, |
---|
179 | closeAction: "hide", |
---|
180 | width: 300, |
---|
181 | height: 400, |
---|
182 | title: "Tree Configuration", |
---|
183 | items: [{ |
---|
184 | xtype: "form", |
---|
185 | layout: "fit", |
---|
186 | items: [{ |
---|
187 | id: "treeconfig", |
---|
188 | xtype: "textarea" |
---|
189 | }], |
---|
190 | buttons: [{ |
---|
191 | text: "Save", |
---|
192 | handler: function() { |
---|
193 | var value = Ext.getCmp("treeconfig").getValue() |
---|
194 | try { |
---|
195 | var root = tree.getRootNode(); |
---|
196 | root.attributes.children = Ext.decode(value); |
---|
197 | tree.getLoader().load(root); |
---|
198 | } catch(e) { |
---|
199 | alert("Invalid JSON"); |
---|
200 | return; |
---|
201 | } |
---|
202 | treeConfig = value; |
---|
203 | treeConfigWin.hide(); |
---|
204 | } |
---|
205 | }, { |
---|
206 | text: "Cancel", |
---|
207 | handler: function() { |
---|
208 | treeConfigWin.hide(); |
---|
209 | } |
---|
210 | }] |
---|
211 | }] |
---|
212 | }); |
---|
213 | |
---|
214 | new Ext.Viewport({ |
---|
215 | layout: "fit", |
---|
216 | hideBorders: true, |
---|
217 | items: { |
---|
218 | layout: "border", |
---|
219 | deferredRender: false, |
---|
220 | items: [mapPanel, tree, { |
---|
221 | contentEl: "desc", |
---|
222 | region: "east", |
---|
223 | bodyStyle: {"padding": "5px"}, |
---|
224 | collapsible: true, |
---|
225 | collapseMode: "mini", |
---|
226 | split: true, |
---|
227 | width: 200, |
---|
228 | title: "Description" |
---|
229 | }] |
---|
230 | } |
---|
231 | }); |
---|
232 | }); |
---|