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Diffstat (limited to 'src/querypagebase.h')
| -rw-r--r-- | src/querypagebase.h | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/src/querypagebase.h b/src/querypagebase.h new file mode 100644 index 0000000..8603874 --- /dev/null +++ b/src/querypagebase.h @@ -0,0 +1,148 @@ +/*************************************************************************** + * + * Copyright (C) 2005 Elad Lahav ([email protected]) + * + * 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 AUTHOR ``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 AUTHOR 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. + * + ***************************************************************************/ + +#ifndef QUERYPAGEBASE_H +#define QUERYPAGEBASE_H + +#include <qhbox.h> + +class QueryView; + +/** + * Defines a page in a QueryWidget's tab widget. + * This is a abstract base class for QueryPage and HistoryPage. It defines + * the common behaviour for all pages, which includes appearance, display + * of tab text, page locking, storage and retrieval of information to + * and from files and basic navigation. + * Each page embeds a list widget derived from QueryView. The actual type + * of widget is defined by the different page classes. + * @author Elad Lahav + */ +class QueryPageBase : public QHBox +{ +Q_OBJECT +public: + QueryPageBase(QWidget* pParent = 0, const char* szName = 0); + ~QueryPageBase(); + + void applyPrefs(); + bool load(const QString&, const QString&); + bool save(const QString&, QString&); + void selectNext(); + void selectPrev(); + + + /** + * Determines whether this page can be locked. + * Can be used by inheriting classes to define non-lockable pages. + * @return Always true + */ + virtual bool canLock() { return true; } + + /** + * Locks or unlocks this page. + * @param bLocked true to lock the page, false to unlock it. + */ + void setLocked(bool bLocked) { m_bLocked = bLocked; } + + /** + * Determines whether this page is locked. + * @return true if the page is locked, false otherwise + */ + bool isLocked() { return m_bLocked; } + + /** + * Determines whether this page should be saved when the project is closed. + * By default, pages are saved if and only if they are locked. + * @return true to save the page, false otherwise + */ + virtual bool shouldSave() const { return m_bLocked; }; + + /** + * Constructs a caption for this page. + * The caption appears in the page's tab button and as the page's + * tooltip. + * @param bBrief true to generate a brief caption, false otherwise + * @return The page's title + */ + virtual QString getCaption(bool bBrief = false) const = 0; + +signals: + /** + * Emitted when a record is selected in the view widget. + * @param sFile The "File" field of the selected record + * @param nLine The "Line" field of the selected record + */ + void lineRequested(const QString& sFile, uint nLine); + +protected: + /** The embedded list. */ + QueryView* m_pView; + + /** Indicates whether this page is locked. A locked page is never + overriden by new data, and is also saved to a disc file when the + session is closed. */ + bool m_bLocked; + + /** + * Creates a new list item and adds it to the embedded view. + * This method is used to add records read from a stored file. + * @param sFile The "File" field of the record + * @param sFunc The "Function" field of the record + * @param sLine The "Line" field of the record + * @param sText The "Text" field of the record + */ + virtual void addRecord(const QString& sFile, const QString& sFunc, + const QString& sLine, const QString& sText) = 0; + + /** + * Creates a file path to store this page. + * The path is composed of the project's path and a unique file name + * in that directory. + * @param sProjPath The project's directory + * @return The page's file path + */ + virtual QString getFileName(const QString& sProjPath) const = 0; + + /** + * Tries to read the file header of a stored page. + * The contents of the header differ among inheriting classes. + * @param str A text stream initialised to the open page file + * @return true if the header was read successfully and contains the + * expected information, false otherwise + */ + virtual bool readHeader(QTextStream& str) = 0; + + /** + * Writes a header to a page's file. + * The contents of the header differ among inheriting classes. + * @param str A text stream initialised to the open page file + */ + virtual void writeHeader(QTextStream& str) = 0; +}; + +#endif |