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possible to load amber.js by RequireJS itself

In addition to inline `<script>` tag, it is now possible
to load amber.js (that does all the RequireJS mappings)
by RequireJS itself (mapping just 'amber' and loading it).
So, instead of:

```
<!DOCTYPE html>
<html>

<head>
    <title>Amber Smalltalk</title>
    <meta http-equiv="content-type" content="text/html; charset=utf-8"/>
    <meta name="author" content="Nicolas Petton"/>
    <script type='text/javascript' src='support/amber.js'></script>
    <script type='text/javascript' src='support/requirejs/require.min.js'></script>
</head>

<body>
<script type='text/javascript'>
    require(["amber/devel"], function (smalltalk) {
        smalltalk.initialize({'transport.defaultAmdNamespace': "amber_core"});

        smalltalk.globals.Browser._open();
    });
</script>
</body>
</html>
```

one can put:

```
<!DOCTYPE html>
<html>

<head>
    <title>Amber Smalltalk</title>
    <meta http-equiv="content-type" content="text/html; charset=utf-8"/>
    <meta name="author" content="Nicolas Petton"/>
    <script type='text/javascript' src='support/requirejs/require.min.js'></script>
</head>

<body>
<script type='text/javascript'>
    require.config({paths: {amber: 'support'}});
    require(["amber/amber"], function () {
        require(["amber/devel"], function (smalltalk) {
            smalltalk.initialize({'transport.defaultAmdNamespace': "amber_core"});

            smalltalk.globals.Browser._open();
        });
    });
</script>
</body>
</html>
```

The mapping must be loaded first, then subsequent parts later
in the nested require call.
Herbert Vojčík 11 vuotta sitten
vanhempi
355ae57dcc
commit
b7b4391f5b
1 muutettua tiedostoa jossa 29 lisäystä ja 11 poistoa
Yhdistetty näkymä Näytä diff tilastot
  1. 29 11
      support/amber.js

+ 29 - 11
support/amber.js
Näytä tiedosto 

@@ -16,25 +16,43 @@
 
 var require;
 
 var require;
 
 
 
 require = function (require) {
 
 require = function (require) {
 
-    // To be able to use its path and attributes
 
-    // to map other parts of Amber, this code must find its <script> tag.
 
-    // It first looks for id 'amber-path-mapper'.
 
-    // When loading amber.js asynchronously, you must include this id,
 
-    // or the code can not reliably find its <script>.
 
-    var me = document.getElementById("amber-path-mapper");
 
-    if (!me || me.tagName.toLowerCase() !== "script") {
 
-        // If <script> with 'amber-path-mapper' id is not present,
 
-        // (this id is not necessary for inline <script> tag in HTML),
 
+    function uniquelyMapped(symbolicPath) {
 
+        if (require && typeof define !== "undefined" && define.amd) {
 
+            var mappedPath = require.toUrl(symbolicPath),
 
+                basePath = require.toUrl('') + symbolicPath;
 
+            if (resolveViaDOM(mappedPath) !== resolveViaDOM(basePath)) {
 
+                return mappedPath;
 
+            }
 
+        }
 
+    }
 
+    function myTag() {
 
+        // To be able to use its path and attributes
 
+        // to map other parts of Amber, this code must find its path.
 
+        // It first looks if require is already present && 'amber' path mapped.
 
+        // It not, it looks for id 'amber-path-mapper'.
 
+        // When loading amber.js asynchronously, you must include this id,
 
+        // or the code can not reliably find its <script>.
 
+        // If neither 'amber' mapping, nor script#amber-path-mapper is present,
 
+        // (the id is not necessary for inline <script> tag in HTML),
 
         // it uses the "find the last <script> tag present in the moment" method.
 
         // it uses the "find the last <script> tag present in the moment" method.
 
+        var result = uniquelyMapped('amber/amber');
 
+        if (result) {
 
+            return {src: result, hasAttribute: function () { return false; }};
 
+        }
 
+        var me = document.getElementById("amber-path-mapper");
 
+        if (me && me.tagName.toLowerCase() === "script") {
 
+            return me;
 
+        }
 
         var scripts = document.getElementsByTagName("script");
 
         var scripts = document.getElementsByTagName("script");
 
-        me = scripts[scripts.length - 1];
 
+        return scripts[scripts.length - 1];
 
     }
 
     }
 
+    var me = myTag();
 
     var src = me.src;
 
     var src = me.src;
 
     // strip the last two elements from the URL
 
     // strip the last two elements from the URL
 
     // e.g. http://app.com/amber/support/amber.js -> http://app.com/amber
 
     // e.g. http://app.com/amber/support/amber.js -> http://app.com/amber
 
     var amber_home = resolveViaDOM(src).replace(/\/[^\/]+\/[^\/]+$/, "");
 
     var amber_home = resolveViaDOM(src).replace(/\/[^\/]+\/[^\/]+$/, "");
 
     // In case of nonstandard deployment, you can specify libraries placement directly ...
 
     // In case of nonstandard deployment, you can specify libraries placement directly ...
 
-    var library_home = me.hasAttribute('data-libs') && me.getAttribute('data-libs');
 
+    var library_home = uniquelyMapped('amber_lib') || me.hasAttribute('data-libs') && me.getAttribute('data-libs');
 
 
 
     // ... otherwise, this heuristics is used:
 
     // ... otherwise, this heuristics is used:
 
     if (!library_home) {
 
     if (!library_home) {