Moved some modules and added documentation

wv-context.rkt

@@ -0,0 +1,45 @@
+#lang racket/base
+
+(require racket/class
+         "racket-webview.rkt"
+         "wv-settings.rkt"
+         )
+
+(provide wv-context%)
+
+(define wv-context%
+  (class object%
+    (init-field
+     base-path
+     [file-getter (webview-standard-file-getter base-path)]
+     [context-js  (λ () "")]
+     [context-css (λ () "")]
+     [boilerplate-js (webview-default-boilerplate-js context-js)]
+     [boilerplate-css (webview-default-boilerplate-css context-css)]
+     [ini (error "You need to provide a 'ini' file settings interface for settings, e.g. simple-ini/class")]
+     )
+     
+    (define wv-context #f)
+    (define settings-obj #f)
+
+    (define/public (context)
+      wv-context)
+
+    (define/public (settings section)
+      (send settings-obj clone section)
+      )
+
+    (define/public (base-url)
+      (wv-context-base-url wv-context))
+
+    (super-new)
+    
+    (begin
+      (set! wv-context
+            (webview-new-context file-getter
+                                 #:boilerplate-js boilerplate-js
+                                 #:boilerplate-css boilerplate-css))
+      (set! settings-obj (new wv-settings% [ini ini] [wv-context 'global]))
+      )
+    )
+  )