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      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 LoadAlternateHTMLStringItem : public WorkQueueItem {
     84 public:
     85     LoadAlternateHTMLStringItem(const QString& content, const QString& baseURL,  const QString &failingURL, QWebPage *page)
     86         : WorkQueueItem(page)
     87         , m_content(content)
     88         , m_baseURL(baseURL)
     89         , m_failingURL(failingURL)
     90     {
     91     }
     92 
     93 private:
     94     virtual bool invoke() const;
     95 
     96     QString m_content;
     97     QString m_baseURL;
     98     QString m_failingURL;
     99 };
    100 
    101 class ReloadItem : public WorkQueueItem {
    102 public:
    103     ReloadItem(QWebPage *page)
    104         : WorkQueueItem(page)
    105     {
    106     }
    107     virtual bool invoke() const;
    108 };
    109 
    110 class ScriptItem : public WorkQueueItem {
    111 public:
    112     ScriptItem(const QString &script, QWebPage *page)
    113         : WorkQueueItem(page)
    114         , m_script(script)
    115     {
    116     }
    117 
    118     QString script() const { return m_script; }
    119 
    120     virtual bool invoke() const;
    121 
    122 private:
    123     QString m_script;
    124 };
    125 
    126 class LoadingScriptItem : public ScriptItem {
    127 public:
    128     LoadingScriptItem(const QString& script, QWebPage* page)
    129         : ScriptItem(script, page)
    130     {
    131     }
    132 
    133     virtual bool invoke() const { return ScriptItem::invoke(); }
    134 };
    135 
    136 class NonLoadingScriptItem : public ScriptItem {
    137 public:
    138     NonLoadingScriptItem(const QString& script, QWebPage* page)
    139         : ScriptItem(script, page)
    140     {
    141     }
    142 
    143     virtual bool invoke() const { ScriptItem::invoke(); return false; }
    144 };
    145 
    146 
    147 class BackForwardItem : public WorkQueueItem {
    148 public:
    149     virtual bool invoke() const;
    150 
    151 protected:
    152     BackForwardItem(int howFar, QWebPage *page)
    153         : WorkQueueItem(page)
    154         , m_howFar(howFar)
    155     {
    156     }
    157 
    158     int m_howFar;
    159 };
    160 
    161 class BackItem : public BackForwardItem {
    162 public:
    163     BackItem(unsigned howFar, QWebPage *page)
    164         : BackForwardItem(-howFar, page)
    165     {
    166     }
    167 };
    168 
    169 class ForwardItem : public BackForwardItem {
    170 public:
    171     ForwardItem(unsigned howFar, QWebPage *page)
    172         : BackForwardItem(howFar, page)
    173     {
    174     }
    175 };
    176 
    177 #endif // !defined(WorkQueueItemQt_h)
    178