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globals.js
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globals.js
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/**
* Copyright (C) 2012
*
* This file is part of the project ohiggins
*
* This software is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option) any
* later version.
*
* This software is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* this library; if not, write to the Free Software Foundation, Inc., 51
* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* As a special exception, if you link this library with other files to produce
* an executable, this library does not by itself cause the resulting executable
* to be covered by the GNU General Public License. This exception does not
* however invalidate any other reasons why the executable file might be covered
* by the GNU General Public License.
*
* Author: Antonio Hernández <[email protected]>
*/
Ext.ns(
'Viewer.controller',
'Viewer.store',
'Viewer.widgets',
'Viewer.dialog'
);
(function() {
/**
* Default precision for coordinates which are represented as decimal degrees.
*/
Viewer.DEGREES_PRECISION = 8;
/**
* Default precision for coordinates which are represented in UTM.
*/
Viewer.UTM_PRECISION = 8;
/**
* Default precision for the seconds component of coordinates represented as
* degrees.
*/
Viewer.SECONDS_PRECISION = 2;
/**
* Default projection for UTM coordinates.
*/
Viewer.UTM_PROJECTION = 'EPSG:32719';
/**
* Default projection for geographics coordinates.
*/
Viewer.GEO_PROJECTION = 'EPSG:4326';
/**
* Object to store components to be instantiated only once.
* Use Viewer.getComponent() to retrieve them.
*/
var __components__ = {};
/**
* Array of instantiated controllers.
* Use Viewer.getController() to retrieve them.
*/
var __controllers__ = {};
/**
* Base URL for AJAX requests.
*/
var base_url = (function() {
return '${protocol}//${host}'
.replace('${protocol}', location.protocol)
.replace('${host}', location.host);
})();
/**
* Returns an absolute URL.
*/
Viewer.formatUrl = function(path) {
if (path.search(/^[^:]+:\/\/[^\/:]+(:\d*)*/) == 0) {
// TODO: Improve this regexp.
return path;
}
return '${base_url}/${path}'
.replace('${path}', path)
.replace(/(\/)+/g, '/')
.replace('${base_url}', base_url);
};
/**
* Returns a list of components of the specified xtype.
*/
Viewer.getByXType = function(xtype) {
var items = Ext.ComponentMgr.all.filterBy(function(item) {
return item.getXType() == xtype;
});
return items;
};
/**
* Returns a list of components of the specified class name.
*/
Viewer.getByClass = function(className) {
var items = Ext.ComponentMgr.all.filterBy(function(item) {
try {
return item.getEl().hasClass(className);
} catch(e) {
return false;
}
});
return items;
};
/**
* Register a component in the components object.
*/
Viewer.registerComponent = function(id, component) {
if (__components__[id] === undefined) {
__components__[id] = component;
}
};
/**
* Unregisters a component.
*/
Viewer.unregisterComponent = function(id) {
if (__components__[id] === undefined) {
throw new Error("unregisterComponent: Compoonent "+id+" wasn't previously registered.");
} else {
__components__[id] = undefined;
}
}
/**
* Retrieve a component from the components object.
*/
Viewer.getComponent = function(id) {
return __components__[id] || undefined;
};
/**
* Retrieve a controller from the controllers object.
*/
Viewer.getController = function(id) {
if (__controllers__[id] === undefined) {
var klass = Viewer.controller[id];
__controllers__[id] = new klass();
}
return __controllers__[id];
};
/**
* Retrieve the MapPanel object.
*/
Viewer.getMapPanel = function() {
try {
return window.app.mapPanel;
} catch(e) {
return null;
}
};
/**
* Retrieve the layer selector tree.
*/
Viewer.getLayerSelector = function() {
try {
return Viewer.viewport.layerSelector;
} catch(e) {
return null;
}
};
/**
* Retrieve the currently selected layer.
*/
Viewer.getSelectedLayer = function() {
try {
return window.app.selectedLayer.getLayer();
} catch(e) {
return null;
}
};
/**
* Call the StatsController to track the URL
* passed as parameter.
*/
Viewer.trackUrl = function(url) {
app.trackUrl(url);
};
})();