1/*
2 * Copyright (C) 2010 Google, Inc. All Rights Reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#include "LoadableScript.h"
29#include "LoadableScriptClient.h"
30#include <wtf/Ref.h>
31#include <wtf/RefCounted.h>
32#include <wtf/text/TextPosition.h>
33
34namespace WebCore {
35
36class CachedScript;
37class PendingScriptClient;
38class ScriptElement;
39
40// A container for scripts which may be loaded and executed.
41// This can hold LoadableScript and non external inline script.
42class PendingScript final : public RefCounted<PendingScript>, public LoadableScriptClient {
43public:
44 static Ref<PendingScript> create(ScriptElement&, LoadableScript&);
45 static Ref<PendingScript> create(ScriptElement&, TextPosition scriptStartPosition);
46
47 virtual ~PendingScript();
48
49 TextPosition startingPosition() const { return m_startingPosition; }
50 void setStartingPosition(const TextPosition& position) { m_startingPosition = position; }
51
52 bool watchingForLoad() const { return needsLoading() && m_client; }
53
54 ScriptElement& element() { return m_element.get(); }
55 const ScriptElement& element() const { return m_element.get(); }
56
57 LoadableScript* loadableScript() const;
58 bool needsLoading() const { return loadableScript(); }
59
60 bool isLoaded() const;
61 bool error() const;
62
63 void notifyFinished(LoadableScript&) override;
64
65 void setClient(PendingScriptClient&);
66 void clearClient();
67
68private:
69 PendingScript(ScriptElement&, LoadableScript&);
70 PendingScript(ScriptElement&, TextPosition startingPosition);
71
72 void notifyClientFinished();
73
74 Ref<ScriptElement> m_element;
75 TextPosition m_startingPosition; // Only used for inline script tags.
76 RefPtr<LoadableScript> m_loadableScript;
77 PendingScriptClient* m_client { nullptr };
78};
79
80inline LoadableScript* PendingScript::loadableScript() const
81{
82 return m_loadableScript.get();
83}
84
85}
86