tools/designer/src/lib/shared/scriptdialog.cpp
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     1 /****************************************************************************
       
     2 **
       
     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
       
     4 ** All rights reserved.
       
     5 ** Contact: Nokia Corporation (qt-info@nokia.com)
       
     6 **
       
     7 ** This file is part of the Qt Designer of the Qt Toolkit.
       
     8 **
       
     9 ** $QT_BEGIN_LICENSE:LGPL$
       
    10 ** No Commercial Usage
       
    11 ** This file contains pre-release code and may not be distributed.
       
    12 ** You may use this file in accordance with the terms and conditions
       
    13 ** contained in the Technology Preview License Agreement accompanying
       
    14 ** this package.
       
    15 **
       
    16 ** GNU Lesser General Public License Usage
       
    17 ** Alternatively, this file may be used under the terms of the GNU Lesser
       
    18 ** General Public License version 2.1 as published by the Free Software
       
    19 ** Foundation and appearing in the file LICENSE.LGPL included in the
       
    20 ** packaging of this file.  Please review the following information to
       
    21 ** ensure the GNU Lesser General Public License version 2.1 requirements
       
    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
       
    23 **
       
    24 ** In addition, as a special exception, Nokia gives you certain additional
       
    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception
       
    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
       
    27 **
       
    28 ** If you have questions regarding the use of this file, please contact
       
    29 ** Nokia at qt-info@nokia.com.
       
    30 **
       
    31 **
       
    32 **
       
    33 **
       
    34 **
       
    35 **
       
    36 **
       
    37 **
       
    38 ** $QT_END_LICENSE$
       
    39 **
       
    40 ****************************************************************************/
       
    41 
       
    42 #include "scriptdialog_p.h"
       
    43 #include "qscripthighlighter_p.h"
       
    44 
       
    45 #include <abstractdialoggui_p.h>
       
    46 
       
    47 #include <QtGui/QTextEdit>
       
    48 #include <QtGui/QVBoxLayout>
       
    49 #include <QtGui/QHBoxLayout>
       
    50 #include <QtGui/QDialogButtonBox>
       
    51 #include <QtGui/QMessageBox>
       
    52 #ifdef QT_SCRIPT_LIB
       
    53 #include <QtScript/QScriptEngine>
       
    54 #endif
       
    55 
       
    56 QT_BEGIN_NAMESPACE
       
    57 
       
    58 namespace qdesigner_internal {
       
    59 
       
    60     // ScriptDialog
       
    61     ScriptDialog::ScriptDialog(QDesignerDialogGuiInterface *m_dialogGui, QWidget *parent) :
       
    62         QDialog(parent),
       
    63         m_dialogGui(m_dialogGui),
       
    64         m_textEdit(new QTextEdit)
       
    65     {
       
    66         setWindowTitle(tr("Edit script"));
       
    67         setModal(true);
       
    68 
       
    69         QVBoxLayout *vboxLayout = new QVBoxLayout(this);
       
    70 
       
    71         const QString textHelp = tr("\
       
    72 <html>Enter a Qt Script snippet to be executed while loading the form.<br>\
       
    73 The widget and its children are accessible via the \
       
    74 variables <i>widget</i> and <i>childWidgets</i>, respectively.");
       
    75         m_textEdit->setToolTip(textHelp);
       
    76         m_textEdit->setWhatsThis(textHelp);
       
    77         m_textEdit->setMinimumSize(QSize(600, 400));
       
    78         vboxLayout->addWidget(m_textEdit);
       
    79         new QScriptHighlighter(m_textEdit->document());
       
    80         // button box
       
    81         QDialogButtonBox *buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok|QDialogButtonBox::Cancel);
       
    82         connect(buttonBox , SIGNAL(rejected()), this, SLOT(reject()));
       
    83         connect(buttonBox , SIGNAL(accepted()), this, SLOT(slotAccept()));
       
    84         vboxLayout->addWidget(buttonBox);
       
    85     }
       
    86 
       
    87     bool ScriptDialog::editScript(QString &script)
       
    88     {
       
    89         m_textEdit->setText(script);
       
    90         if (exec() != Accepted)
       
    91             return false;
       
    92 
       
    93         script = trimmedScript();
       
    94         return true;
       
    95     }
       
    96 
       
    97     void ScriptDialog::slotAccept()
       
    98     {
       
    99         if (checkScript())
       
   100             accept();
       
   101     }
       
   102 
       
   103     QString ScriptDialog::trimmedScript() const
       
   104     {
       
   105         // Ensure a single newline
       
   106         QString rc = m_textEdit->toPlainText().trimmed();
       
   107         if (!rc.isEmpty())
       
   108             rc += QLatin1Char('\n');
       
   109         return rc;
       
   110     }
       
   111 
       
   112     bool ScriptDialog::checkScript()
       
   113     {
       
   114         const QString script = trimmedScript();
       
   115         if (script.isEmpty())
       
   116             return true;
       
   117 #ifdef QT_SCRIPT_LIB
       
   118         QScriptEngine scriptEngine;
       
   119         if (scriptEngine.canEvaluate(script))
       
   120             return true;
       
   121         m_dialogGui->message(this, QDesignerDialogGuiInterface::ScriptDialogMessage, QMessageBox::Warning,
       
   122                              windowTitle(), tr("Syntax error"), QMessageBox::Ok);
       
   123         return  false;
       
   124 #else
       
   125         return true;
       
   126 #endif
       
   127     }
       
   128 } // namespace qdesigner_internal
       
   129 
       
   130 QT_END_NAMESPACE