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LibWeb: Add XMLHttpRequest object :^)

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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
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69
Libraries/LibWeb/DOM/XMLHttpRequest.h Normal file
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/*
* 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 <AK/ByteBuffer.h>
#include <AK/RefCounted.h>
#include <AK/Weakable.h>
#include <LibWeb/Bindings/Wrappable.h>
#include <LibWeb/DOM/EventTarget.h>
namespace Web {
class XMLHttpRequest final
: public RefCounted<XMLHttpRequest>
, public Weakable<XMLHttpRequest>
, public EventTarget
, public Bindings::Wrappable {
public:
using WrapperType = Bindings::XMLHttpRequestWrapper;
static NonnullRefPtr<XMLHttpRequest> create() { return adopt(*new XMLHttpRequest); }
virtual ~XMLHttpRequest() override;
using RefCounted::ref;
using RefCounted::unref;
String response_text() const;
void open(const String& method, const String& url);
void send();
private:
virtual void ref_event_target() override { ref(); }
virtual void unref_event_target() override { unref(); }
virtual void dispatch_event(NonnullRefPtr<Event>) override;
XMLHttpRequest();
String m_method;
String m_url;
ByteBuffer m_response;
};
}