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LibWeb: Add XMLHttpRequest object :^)

This patch adds very basic XMLHttpRequest support to LibWeb. Here's an
example that currently works:

    var callback = function() { alert(this.responseText); }
    var xhr = new XMLHttpRequest();
    xhr.addEventListener("load", callback);
    xhr.open("GET", "http://serenityos.org/~kling/test/example.txt");
    xhr.send();

There are many limitations and bugs, but it's pretty dang awesome that
we have XHR. :^)
This commit is contained in:
Andreas Kling 2020-04-08 21:11:51 +02:00
parent b3c62d0bc8
commit 4ffac713b9
13 changed files with 546 additions and 3 deletions

View file

@ -32,6 +32,8 @@
#include <LibWeb/Bindings/DocumentWrapper.h>
#include <LibWeb/Bindings/NavigatorObject.h>
#include <LibWeb/Bindings/WindowObject.h>
#include <LibWeb/Bindings/XMLHttpRequestConstructor.h>
#include <LibWeb/Bindings/XMLHttpRequestPrototype.h>
#include <LibWeb/DOM/Document.h>
#include <LibWeb/DOM/Window.h>
@ -50,12 +52,24 @@ WindowObject::WindowObject(Window& impl)
put_native_function("cancelAnimationFrame", cancel_animation_frame, 1);
put("navigator", heap().allocate<NavigatorObject>());
m_xhr_prototype = heap().allocate<XMLHttpRequestPrototype>();
m_xhr_constructor = heap().allocate<XMLHttpRequestConstructor>();
m_xhr_constructor->put("prototype", m_xhr_prototype);
put("XMLHttpRequest", m_xhr_constructor);
}
WindowObject::~WindowObject()
{
}
void WindowObject::visit_children(Visitor& visitor)
{
GlobalObject::visit_children(visitor);
visitor.visit(m_xhr_constructor);
visitor.visit(m_xhr_prototype);
}
static Window* impl_from(JS::Interpreter& interpreter)
{
auto* this_object = interpreter.this_value().to_object(interpreter.heap());

View file

@ -32,7 +32,7 @@
namespace Web {
namespace Bindings {
class WindowObject : public JS::GlobalObject {
class WindowObject final : public JS::GlobalObject {
public:
explicit WindowObject(Window&);
virtual ~WindowObject() override;
@ -40,8 +40,12 @@ public:
Window& impl() { return *m_impl; }
const Window& impl() const { return *m_impl; }
XMLHttpRequestPrototype* xhr_prototype() { return m_xhr_prototype; }
XMLHttpRequestConstructor* xhr_constructor() { return m_xhr_constructor; }
private:
virtual const char* class_name() const override { return "WindowObject"; }
virtual void visit_children(Visitor&) override;
static JS::Value document_getter(JS::Interpreter&);
static void document_setter(JS::Interpreter&, JS::Value);
@ -53,6 +57,9 @@ private:
static JS::Value cancel_animation_frame(JS::Interpreter&);
NonnullRefPtr<Window> m_impl;
XMLHttpRequestConstructor* m_xhr_constructor { nullptr };
XMLHttpRequestPrototype* m_xhr_prototype { nullptr };
};
}

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@ -0,0 +1,57 @@
/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <LibJS/Heap/Heap.h>
#include <LibJS/Interpreter.h>
#include <LibWeb/Bindings/WindowObject.h>
#include <LibWeb/Bindings/XMLHttpRequestConstructor.h>
#include <LibWeb/Bindings/XMLHttpRequestWrapper.h>
#include <LibWeb/DOM/XMLHttpRequest.h>
namespace Web {
namespace Bindings {
XMLHttpRequestConstructor::XMLHttpRequestConstructor()
{
put("length", JS::Value(1));
}
XMLHttpRequestConstructor::~XMLHttpRequestConstructor()
{
}
JS::Value XMLHttpRequestConstructor::call(JS::Interpreter& interpreter)
{
return construct(interpreter);
}
JS::Value XMLHttpRequestConstructor::construct(JS::Interpreter& interpreter)
{
return interpreter.heap().allocate<XMLHttpRequestWrapper>(XMLHttpRequest::create());
}
}
}

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@ -0,0 +1,48 @@
/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <LibJS/Runtime/NativeFunction.h>
namespace Web {
namespace Bindings {
class XMLHttpRequestConstructor final : public JS::NativeFunction {
public:
XMLHttpRequestConstructor();
virtual ~XMLHttpRequestConstructor() override;
virtual JS::Value call(JS::Interpreter&) override;
virtual JS::Value construct(JS::Interpreter&) override;
private:
virtual bool has_constructor() const override { return true; }
virtual const char* class_name() const override { return "XMLHttpRequestConstructor"; }
};
}
}

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@ -0,0 +1,87 @@
/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <AK/Function.h>
#include <LibJS/Interpreter.h>
#include <LibJS/Runtime/Error.h>
#include <LibWeb/Bindings/XMLHttpRequestPrototype.h>
#include <LibWeb/Bindings/XMLHttpRequestWrapper.h>
#include <LibWeb/DOM/XMLHttpRequest.h>
namespace Web {
namespace Bindings {
XMLHttpRequestPrototype::XMLHttpRequestPrototype()
{
put_native_function("open", open, 2);
put_native_function("send", send, 0);
put_native_property("responseText", response_text_getter, nullptr);
}
XMLHttpRequestPrototype::~XMLHttpRequestPrototype()
{
}
static XMLHttpRequest* impl_from(JS::Interpreter& interpreter)
{
auto* this_object = interpreter.this_value().to_object(interpreter.heap());
if (!this_object)
return nullptr;
if (StringView("XMLHttpRequestWrapper") != this_object->class_name()) {
interpreter.throw_exception<JS::Error>("TypeError", "This is not an XMLHttpRequest object");
return nullptr;
}
return &static_cast<XMLHttpRequestWrapper*>(this_object)->impl();
}
JS::Value XMLHttpRequestPrototype::open(JS::Interpreter& interpreter)
{
auto* impl = impl_from(interpreter);
if (!impl)
return {};
impl->open(interpreter.argument(0).to_string(), interpreter.argument(1).to_string());
return JS::js_undefined();
}
JS::Value XMLHttpRequestPrototype::send(JS::Interpreter& interpreter)
{
auto* impl = impl_from(interpreter);
if (!impl)
return {};
impl->send();
return JS::js_undefined();
}
JS::Value XMLHttpRequestPrototype::response_text_getter(JS::Interpreter& interpreter)
{
auto* impl = impl_from(interpreter);
if (!impl)
return {};
return JS::js_string(interpreter, impl->response_text());
}
}
}

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@ -0,0 +1,49 @@
/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <LibJS/Runtime/Object.h>
namespace Web {
namespace Bindings {
class XMLHttpRequestPrototype final : public JS::Object {
public:
XMLHttpRequestPrototype();
virtual ~XMLHttpRequestPrototype() override;
private:
virtual const char* class_name() const override { return "XMLHttpRequestPrototype"; }
static JS::Value open(JS::Interpreter&);
static JS::Value send(JS::Interpreter&);
static JS::Value response_text_getter(JS::Interpreter&);
};
}
}

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@ -0,0 +1,65 @@
/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <AK/FlyString.h>
#include <LibJS/Interpreter.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/Value.h>
#include <LibWeb/Bindings/WindowObject.h>
#include <LibWeb/Bindings/XMLHttpRequestPrototype.h>
#include <LibWeb/Bindings/XMLHttpRequestWrapper.h>
#include <LibWeb/DOM/XMLHttpRequest.h>
namespace Web {
namespace Bindings {
XMLHttpRequestWrapper* wrap(JS::Heap& heap, XMLHttpRequest& impl)
{
return static_cast<XMLHttpRequestWrapper*>(wrap_impl(heap, impl));
}
XMLHttpRequestWrapper::XMLHttpRequestWrapper(XMLHttpRequest& impl)
: EventTargetWrapper(impl)
{
set_prototype(static_cast<WindowObject&>(interpreter().global_object()).xhr_prototype());
}
XMLHttpRequestWrapper::~XMLHttpRequestWrapper()
{
}
XMLHttpRequest& XMLHttpRequestWrapper::impl()
{
return static_cast<XMLHttpRequest&>(EventTargetWrapper::impl());
}
const XMLHttpRequest& XMLHttpRequestWrapper::impl() const
{
return static_cast<const XMLHttpRequest&>(EventTargetWrapper::impl());
}
}
}

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@ -0,0 +1,49 @@
/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <LibWeb/Bindings/EventTargetWrapper.h>
namespace Web {
namespace Bindings {
class XMLHttpRequestWrapper final : public EventTargetWrapper {
public:
explicit XMLHttpRequestWrapper(XMLHttpRequest&);
virtual ~XMLHttpRequestWrapper() override;
XMLHttpRequest& impl();
const XMLHttpRequest& impl() const;
private:
virtual const char* class_name() const override { return "XMLHttpRequestWrapper"; }
};
XMLHttpRequestWrapper* wrap(JS::Heap&, XMLHttpRequest&);
}
}