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Applying a reworked version of #768. The benefits of this are largely

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maintenance related: this cleans up a global flag (_OPENLAYERS_SFL_), replacing
it with something in the OpenLayers namespace, and adds documentation/comments
to the code here that weren't before. Approved by El Chairman Uz. 


git-svn-id: http://svn.openlayers.org/trunk/openlayers@3543 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
crschmidt
2007-06-29 15:31:09 +00:00
parent 6aea8da115
commit f1c61fd0d6
1 changed files with 171 additions and 156 deletions
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lib/OpenLayers.js
+44 -29
View File
@@ -2,55 +2,68 @@
* See http://svn.openlayers.org/trunk/openlayers/repository-license.txt
* for the full text of the license. */
/* @requires OpenLayers/BaseTypes.js
/*
* @requires OpenLayers/BaseTypes.js
*/
////
/// This blob sucks in all the files in uncompressed form for ease of use
///
(function() {
/**
* Before creating the OpenLayers namespace, check to see if
* OpenLayers.singleFile is true. This occurs if the
* OpenLayers/SingleFile.js script is included before this one - as is the
* case with single file builds.
*/
var singleFile = (typeof OpenLayers == "object" && OpenLayers.singleFile);
/**
* The OpenLayers object provides a namespace for all things OpenLayers
* @type Object
*/
OpenLayers = {
OpenLayers = new Object();
/**
* @type String
* @private
*/
_scriptName: (!singleFile) ? "lib/OpenLayers.js" : "OpenLayers.js",
OpenLayers._scriptName = (
typeof(_OPENLAYERS_SFL_) == "undefined" ? "lib/OpenLayers.js"
: "OpenLayers.js" );
OpenLayers._getScriptLocation = function () {
/**
* @type String
* @returns Path to this script
* @private
*/
_getScriptLocation: function () {
var scriptLocation = "";
var SCRIPT_NAME = OpenLayers._scriptName;
var scriptName = OpenLayers._scriptName;
var scripts = document.getElementsByTagName('script');
for (var i = 0; i < scripts.length; i++) {
var src = scripts[i].getAttribute('src');
if (src) {
var index = src.lastIndexOf(SCRIPT_NAME);
var index = src.lastIndexOf(scriptName);
// is it found, at the end of the URL?
if ((index > -1) && (index + SCRIPT_NAME.length == src.length)) {
scriptLocation = src.slice(0, -SCRIPT_NAME.length);
if ((index > -1) && (index + scriptName.length == src.length)) {
scriptLocation = src.slice(0, -scriptName.length);
break;
}
}
}
return scriptLocation;
}
/*
`_OPENLAYERS_SFL_` is a flag indicating this file is being included
in a Single File Library build of the OpenLayers Library.
When we are *not* part of a SFL build we dynamically include the
OpenLayers library code.
When we *are* part of a SFL build we do not dynamically include the
OpenLayers library code as it will be appended at the end of this file.
};
/**
* OpenLayers.singleFile is a flag indicating this file is being included
* in a Single File Library build of the OpenLayers Library.
*
* When we are *not* part of a SFL build we dynamically include the
* OpenLayers library code.
*
* When we *are* part of a SFL build we do not dynamically include the
* OpenLayers library code as it will be appended at the end of this file.
*/
if (typeof(_OPENLAYERS_SFL_) == "undefined") {
/*
The original code appeared to use a try/catch block
to avoid polluting the global namespace,
we now use a anonymous function to achieve the same result.
*/
(function() {
if(!singleFile) {
var jsfiles = new Array(
"OpenLayers/BaseTypes.js",
"OpenLayers/Util.js",
@@ -150,6 +163,8 @@ if (typeof(_OPENLAYERS_SFL_) == "undefined") {
"OpenLayers/Control/EditingToolbar.js"
); // etc.
var allScriptTags = "";
var host = OpenLayers._getScriptLocation() + "lib/";
@@ -167,6 +182,6 @@ if (typeof(_OPENLAYERS_SFL_) == "undefined") {
}
}
if (allScriptTags) document.write(allScriptTags);
})();
}
})();
OpenLayers.VERSION_NUMBER="$Revision$";