1 /*

     2  * Copyright (C) 2007 Apple Inc.  All rights reserved.

     3  * Copyright (C) 2009 Torch Mobile Inc. http://www.torchmobile.com/

     4  *

     5  * Redistribution and use in source and binary forms, with or without

     6  * modification, are permitted provided that the following conditions

     7  * are met:

     8  *

     9  * 1.  Redistributions of source code must retain the above copyright

    10  *     notice, this list of conditions and the following disclaimer.

    11  * 2.  Redistributions in binary form must reproduce the above copyright

    12  *     notice, this list of conditions and the following disclaimer in the

    13  *     documentation and/or other materials provided with the distribution.

    14  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of

    15  *     its contributors may be used to endorse or promote products derived

    16  *     from this software without specific prior written permission.

    17  *

    18  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY

    19  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

    20  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

    21  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY

    22  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

    23  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

    24  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

    25  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

    26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

    27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    28  */

    29 

    30 #ifndef WorkQueueItemQt_h

    31 #define WorkQueueItemQt_h

    32 

    33 #include <QPointer>

    34 #include <QString>

    35 #include <qwebframe.h>

    36 #include <qwebpage.h>

    37 

    38 class WorkQueueItem {

    39 public:

    40     WorkQueueItem(QWebPage *page) : m_webPage(page) {}

    41     virtual ~WorkQueueItem() { }

    42     virtual bool invoke() const = 0;

    43 

    44 protected:

    45     QPointer<QWebPage> m_webPage;

    46 };

    47 

    48 class LoadItem : public WorkQueueItem {

    49 public:

    50     LoadItem(const QString &url, const QString &target, QWebPage *page)

    51         : WorkQueueItem(page)

    52         , m_url(url)

    53         , m_target(target)

    54     {

    55     }

    56 

    57     QString url() const { return m_url; }

    58     QString target() const { return m_target; }

    59 

    60     virtual bool invoke() const;

    61 

    62 private:

    63     QString m_url;

    64     QString m_target;

    65 };

    66 

    67 class LoadHTMLStringItem : public WorkQueueItem {

    68 public:

    69     LoadHTMLStringItem(const QString& content, const QString &baseURL, QWebPage *page)

    70         : WorkQueueItem(page)

    71         , m_content(content)

    72         , m_baseURL(baseURL)

    73     {

    74     }

    75 

    76 private:

    77     virtual bool invoke() const;

    78 

    79     QString m_content;

    80     QString m_baseURL;

    81 };

    82 

    83 class ReloadItem : public WorkQueueItem {

    84 public:

    85     ReloadItem(QWebPage *page)

    86         : WorkQueueItem(page)

    87     {

    88     }

    89     virtual bool invoke() const;

    90 };

    91 

    92 class ScriptItem : public WorkQueueItem {

    93 public:

    94     ScriptItem(const QString &script, QWebPage *page)

    95         : WorkQueueItem(page)

    96         , m_script(script)

    97     {

    98     }

    99 

   100     QString script() const { return m_script; }

   101 

   102     virtual bool invoke() const;

   103 

   104 private:

   105     QString m_script;

   106 };

   107 

   108 class LoadingScriptItem : public ScriptItem {

   109 public:

   110     LoadingScriptItem(const QString& script, QWebPage* page)

   111         : ScriptItem(script, page)

   112     {

   113     }

   114 

   115     virtual bool invoke() const { return ScriptItem::invoke(); }

   116 };

   117 

   118 class NonLoadingScriptItem : public ScriptItem {

   119 public:

   120     NonLoadingScriptItem(const QString& script, QWebPage* page)

   121         : ScriptItem(script, page)

   122     {

   123     }

   124 

   125     virtual bool invoke() const { ScriptItem::invoke(); return false; }

   126 };

   127 

   128 

   129 class BackForwardItem : public WorkQueueItem {

   130 public:

   131     virtual bool invoke() const;

   132 

   133 protected:

   134     BackForwardItem(int howFar, QWebPage *page)

   135         : WorkQueueItem(page)

   136         , m_howFar(howFar)

   137     {

   138     }

   139 

   140     int m_howFar;

   141 };

   142 

   143 class BackItem : public BackForwardItem {

   144 public:

   145     BackItem(unsigned howFar, QWebPage *page)

   146         : BackForwardItem(-howFar, page)

   147     {

   148     }

   149 };

   150 

   151 class ForwardItem : public BackForwardItem {

   152 public:

   153     ForwardItem(unsigned howFar, QWebPage *page)

   154         : BackForwardItem(howFar, page)

   155     {

   156     }

   157 };

   158 

   159 #endif // !defined(WorkQueueItemQt_h)