Add a window object with an alert method

test/test-js-alert.html tests use of the alert method, which currently
just prints to the console.

src/rust-mozjs

@@ -1 +1 @@
-Subproject commit fc904d3a7c36934ad0b2a4f83ad99f3862febada
+Subproject commit 1a01c0063a4f0cd5ceaf04fbd84a59699f668a02

src/servo/content/content_task.rs

@@ -13,7 +13,7 @@ import task::{spawn, spawn_listener};
 import io::{read_whole_file, println};
 import result::{ok, err};
 
-import dom::base::{Document, Node, NodeScope, define_bindings};
+import dom::base::{Document, Node, NodeScope, Window, define_bindings};
 import dom::event::{Event, ResizeEvent};
 import dom::style;
 import dom::style::Stylesheet;
@@ -80,6 +80,7 @@ struct Content<C:Compositor> {
     let jsrt: jsrt;
 
     let mut document: option<@Document>;
+    let mut window:   option<@Window>;
     let mut doc_url: option<url>;
 
     let resource_task: ResourceTask;
@@ -95,7 +96,8 @@ struct Content<C:Compositor> {
         self.jsrt = jsrt();
 
         self.document = none;
-        self.doc_url = none;
+        self.window   = none;
+        self.doc_url  = none;
 
         self.compositor.add_event_listener(self.event_port.chan());
 
@@ -129,13 +131,15 @@ struct Content<C:Compositor> {
             let js_scripts = js_port.recv();
 
             // Apply the css rules to the dom tree:
-            #debug["%?", css_rules];
+            #debug["css_rules: %?", css_rules];
 
-            #debug["%?", js_scripts];
+            #debug["js_scripts: %?", js_scripts];
 
             let document = Document(root, css_rules);
+            let window   = Window(root);
             self.relayout(document, &url);
             self.document = some(@document);
+            self.window   = some(@window);
             self.doc_url = some(copy url);
 
             //XXXjdm it was easier to duplicate the relevant ExecuteMsg code;
@@ -146,7 +150,8 @@ struct Content<C:Compositor> {
                 cx.set_logging_error_reporter();
                 cx.new_compartment(global_class).chain(|compartment| {
                     compartment.define_functions(debug_fns);
-                    define_bindings(*compartment, option::get(self.document));
+                    define_bindings(*compartment, option::get(self.document),
+                                    option::get(self.window));
                     cx.evaluate_script(compartment.global_obj, bytes, ~"???", 1u)
                 });
             }

src/servo/dom/base.rs

@@ -15,6 +15,13 @@ import bindings;
 import std::arc::arc;
 import style::Stylesheet;
 
+struct Window {
+    let root: Node;
+    new(root: Node) {
+        self.root = root;
+    }
+}
+
 struct Document {
     let root: Node;
     let css_rules: arc<Stylesheet>;
@@ -69,7 +76,9 @@ struct Attr {
     }
 }
 
-fn define_bindings(compartment: bare_compartment, doc: @Document) {
+fn define_bindings(compartment: bare_compartment, doc: @Document,
+                   win: @Window) {
+    bindings::window::init(compartment, win);
     bindings::document::init(compartment, doc);
     bindings::node::init(compartment);
 }

src/servo/dom/bindings/document.rs

@@ -1,4 +1,4 @@
-import js::rust::{bare_compartment, methods};
+import js::rust::{compartment, bare_compartment, methods, jsobj};
 import js::{JS_ARGV, JSCLASS_HAS_RESERVED_SLOTS, JSPROP_ENUMERATE, JSPROP_SHARED, JSVAL_NULL, JS_THIS_OBJECT,
             JS_SET_RVAL};
 import js::jsapi::{JSContext, jsval, JSObject, JSBool, jsid, JSClass, JSFreeOp};
@@ -10,9 +10,10 @@ import js::crust::{JS_PropertyStub, JS_StrictPropertyStub, JS_EnumerateStub, JS_
 import result::{result, ok, err};
 import ptr::null;
 import libc::c_uint;
-import utils::{DOMString, domstring_to_jsval, rust_box, squirrel_away, str};
+import utils::{DOMString, domstring_to_jsval, rust_box, squirrel_away, str,
+     Document_class};
 import bindings::node::create;
-import base::Document;
+import base::{Document, Node};
 
 enum DOMException {
     INVALID_CHARACTER_ERR
@@ -59,6 +60,8 @@ enum Element = int;
     return 1;
 }*/
 
+// Unfortunately duplicated in document and window.
+// Generalizing it triggers a trans bug
 extern fn getDocumentElement(cx: *JSContext, obj: *JSObject, _id: jsid, rval: *mut jsval) -> JSBool unsafe {
     let node = (*unwrap(obj)).payload.root;
     *rval = RUST_OBJECT_TO_JSVAL(node::create(cx, node).ptr);
@@ -80,7 +83,7 @@ extern fn finalize(_fop: *JSFreeOp, obj: *JSObject) {
 }
 
 fn init(compartment: bare_compartment, doc: @Document) {
-    fn DocumentProto_class(compartment: bare_compartment) -> JSClass {
+  fn DocumentProto_class(compartment: bare_compartment) -> JSClass {
         {name: compartment.add_name(~"DOMDocumentPrototype"),
          flags: 0,
          addProperty: JS_PropertyStub,
@@ -106,39 +109,16 @@ fn init(compartment: bare_compartment, doc: @Document) {
                     null(), null(), null(), null(), null())} // 40
     };
 
-    fn Document_class(compartment: bare_compartment) -> JSClass {
-        {name: compartment.add_name(~"DOMDocument"),
-         flags: JSCLASS_HAS_RESERVED_SLOTS(1),
-         addProperty: JS_PropertyStub,
-         delProperty: JS_PropertyStub,
-         getProperty: JS_PropertyStub,
-         setProperty: JS_StrictPropertyStub,
-         enumerate: JS_EnumerateStub,
-         resolve: JS_ResolveStub,
-         convert: JS_ConvertStub,
-         finalize: finalize,
-         checkAccess: null(),
-         call: null(),
-         construct: null(),
-         hasInstance: utils::has_instance,
-         trace: null(),
-         reserved: (null(), null(), null(), null(), null(),  // 05
-                    null(), null(), null(), null(), null(),  // 10
-                    null(), null(), null(), null(), null(),  // 15
-                    null(), null(), null(), null(), null(),  // 20
-                    null(), null(), null(), null(), null(),  // 25
-                    null(), null(), null(), null(), null(),  // 30
-                    null(), null(), null(), null(), null(),  // 35
-                    null(), null(), null(), null(), null())} // 40
-    };
-
     compartment.register_class(DocumentProto_class);
-    compartment.register_class(Document_class);
+    compartment.register_class(|c| Document_class(c, ~"DOMDocument",
+                                                  finalize));
 
     //TODO error checking
     let obj = result::unwrap(
-        compartment.new_object(~"DOMDocumentPrototype", null(),
-                               compartment.global_obj.ptr));
+                compartment.new_object(~"DOMDocumentPrototype",
+                                       null(),
+                                       compartment.global_obj.ptr));
+
     /*let methods = ~[
         {name: compartment.add_name("getDocumentURI"),
           call: getDocumentURI,

src/servo/dom/bindings/utils.rs

@@ -1,4 +1,4 @@
-import js::rust::{compartment, bare_compartment};
+import js::rust::{compartment, bare_compartment, methods};
 import js::{JS_ARGV, JSCLASS_HAS_RESERVED_SLOTS, JSPROP_ENUMERATE, JSPROP_SHARED, JSVAL_NULL,
             JS_THIS_OBJECT, JS_SET_RVAL};
 import js::jsapi::{JSContext, jsval, JSObject, JSBool, jsid, JSClass, JSFreeOp};
@@ -7,7 +7,10 @@ import js::jsapi::bindgen::{JS_ValueToString, JS_GetStringCharsZAndLength, JS_Re
                             JS_DefineFunctions, JS_DefineProperty, JS_GetContextPrivate,
                             JS_GetClass, JS_GetPrototype};
 import js::glue::bindgen::*;
+import ptr::null;
 import result::{result, ok, err};
+import js::crust::{JS_PropertyStub, JS_StrictPropertyStub, JS_EnumerateStub,
+    JS_ResolveStub, JS_ConvertStub};
 
 enum DOMString {
     str(~str),
@@ -91,3 +94,30 @@ extern fn has_instance(_cx: *JSContext, obj: *JSObject, v: *jsval, bp: *mut JSBo
     }
     return 1;
 }
+
+fn Document_class(compartment: bare_compartment, name: ~str,
+                  finalize: *u8) -> JSClass {
+        {name: compartment.add_name(name),
+         flags: JSCLASS_HAS_RESERVED_SLOTS(1),
+         addProperty: JS_PropertyStub,
+         delProperty: JS_PropertyStub,
+         getProperty: JS_PropertyStub,
+         setProperty: JS_StrictPropertyStub,
+         enumerate: JS_EnumerateStub,
+         resolve: JS_ResolveStub,
+         convert: JS_ConvertStub,
+         finalize: finalize,
+         checkAccess: null(),
+         call: null(),
+         construct: null(),
+         hasInstance: null(),
+         trace: null(),
+         reserved: (null(), null(), null(), null(), null(),  // 05
+                    null(), null(), null(), null(), null(),  // 10
+                    null(), null(), null(), null(), null(),  // 15
+                    null(), null(), null(), null(), null(),  // 20
+                    null(), null(), null(), null(), null(),  // 25
+                    null(), null(), null(), null(), null(),  // 30
+                    null(), null(), null(), null(), null(),  // 35
+                    null(), null(), null(), null(), null())} // 40
+}

src/servo/dom/bindings/window.rs

@@ -0,0 +1,97 @@
+import js::rust::{bare_compartment, methods};
+import js::{JS_ARGV, JSCLASS_HAS_RESERVED_SLOTS, JSPROP_ENUMERATE, JSPROP_SHARED, JSVAL_NULL, JS_THIS_OBJECT,
+            JS_SET_RVAL};
+import js::jsapi::{JSContext, jsval, JSObject, JSBool, jsid, JSClass, JSFreeOp};
+import js::jsapi::bindgen::{JS_ValueToString, JS_GetStringCharsZAndLength, JS_ReportError,
+                            JS_GetReservedSlot, JS_SetReservedSlot, JS_NewStringCopyN,
+    JS_DefineFunctions, JS_DefineProperty, JS_DefineProperties, JS_EncodeString, JS_free};
+import js::glue::bindgen::*;
+import js::global::jsval_to_rust_str;
+import js::crust::{JS_PropertyStub, JS_StrictPropertyStub, JS_EnumerateStub, JS_ConvertStub, JS_ResolveStub};
+import result::{result, ok, err};
+import ptr::null;
+import libc::c_uint;
+import utils::{DOMString, domstring_to_jsval, rust_box, squirrel_away, str,
+    Document_class};
+import bindings::node::create;
+import base::{Node, Window};
+
+enum DOMException {
+    INVALID_CHARACTER_ERR
+}
+
+enum Element = int;
+
+extern fn alert(cx: *JSContext, argc: c_uint, vp: *jsval) -> JSBool {
+  unsafe {
+    let argv = JS_ARGV(cx, vp);
+    assert (argc == 1);
+    // Abstract this pattern and use it in debug, too?
+    let jsstr = JS_ValueToString(cx, *ptr::offset(argv, 0));
+    // Right now, just print to the console
+    io::println(#fmt("ALERT: %s", jsval_to_rust_str(cx, jsstr)));
+    JS_SET_RVAL(cx, vp, JSVAL_NULL);
+  }
+  1_i32
+}
+
+// Unfortunately duplicated in document and window.
+// Generalizing it triggers a trans bug
+extern fn getDocumentElement(cx: *JSContext, obj: *JSObject,
+      _id: jsid, rval: *mut jsval) -> JSBool unsafe {
+  let node = (*unwrap(obj)).payload.root;
+    *rval = RUST_OBJECT_TO_JSVAL(node::create(cx, node).ptr);
+    return 1;
+}
+
+unsafe fn unwrap(obj: *JSObject) -> *rust_box<Window> {
+    let val = JS_GetReservedSlot(obj, 0);
+    unsafe::reinterpret_cast(RUST_JSVAL_TO_PRIVATE(val))
+}
+
+extern fn finalize(_fop: *JSFreeOp, obj: *JSObject) {
+    #debug("finalize!");
+    unsafe {
+        let val = JS_GetReservedSlot(obj, 0);
+        let _: @Window = unsafe::reinterpret_cast(RUST_JSVAL_TO_PRIVATE(val));
+    }
+}
+
+fn init(compartment: bare_compartment, win: @Window) {
+
+    compartment.register_class(|c| Document_class(c, ~"DOMWindow",
+                                                  finalize));
+
+    let obj = result::unwrap(
+                 compartment.new_object(~"DOMWindow", null(), null()));
+
+    /* Define methods on a window */
+    let methods = ~[{name: compartment.add_name(~"alert"),
+                     call: alert,
+                     nargs: 1,
+                     flags: 0}];
+    
+    vec::as_buf(methods, |fns, _len| {
+        JS_DefineFunctions(compartment.cx.ptr, obj.ptr, fns);
+      });
+
+    let attrs = @~[
+        {name: compartment.add_name(~"DOMWindow"),
+         tinyid: 0, // ???
+         flags: 0,
+         getter: getDocumentElement,
+         setter: null()}];
+    vec::push(compartment.global_props, attrs);
+        vec::as_buf(*attrs, |specs, _len| {
+        JS_DefineProperties(compartment.cx.ptr, obj.ptr, specs);
+    });
+
+    unsafe {
+        let raw_ptr: *libc::c_void = unsafe::reinterpret_cast(squirrel_away(win));
+        JS_SetReservedSlot(obj.ptr, 0, RUST_PRIVATE_TO_JSVAL(raw_ptr));
+    }
+
+    compartment.define_property(~"window", RUST_OBJECT_TO_JSVAL(obj.ptr),
+                                JS_PropertyStub, JS_StrictPropertyStub,
+                                JSPROP_ENUMERATE);
+}

src/servo/servo.rc

@@ -28,6 +28,7 @@ mod dom {
         mod document;
         mod utils;
         mod node;
+        mod window;
     }
 }
 

src/test/test-alert.js

@@ -0,0 +1,8 @@
+function output (text)
+{
+    window.alert(text);
+}
+
+output("Opossums have pouches like kangaroos");
+
+

src/test/test-js-alert.html

@@ -0,0 +1 @@
+<script src="test-alert.js"></script>