Initial import of kscope 1.6.2

1 files changed, 148 insertions, 0 deletions

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+/***************************************************************************
+ *
+ * Copyright (C) 2005 Elad Lahav (elad_lahav@users.sourceforge.net)
+ *
+ * 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