Initial import of kscope 1.6.2

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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 QUERYVIEW_H
+#define QUERYVIEW_H
+
+#include <qlistview.h>
+#include <qregexp.h>
+
+class QueryResultsMenu;
+
+/**
+ * Items in a query view.
+ * The sole purpose for creating a new class is to be able to sort query 
+ * results numerically by line number.
+ * @author Elad Lahav
+ */
+class QueryViewItem : public QListViewItem
+{
+public:
+	/**
+	 * Class constructor.
+	 * Used for list views.
+	 * @param	pView		The view widget
+	 * @param	pAfter		The item to preceed the new one
+	 * @param	nLineCol	The index of the line column
+	 */
+	QueryViewItem(QListView* pView, QListViewItem* pAfter, 
+		int nLineCol) : QListViewItem(pView, pAfter), m_nLineCol(nLineCol)
+		{}
+	
+	/**
+	 * Class constructor.
+	 * Used for tree views.
+	 * @param	pParent		The parent item
+	 * @param	pAfter		The item to preceed the new one
+	 * @param	nLineCol	The index of the line column
+	 */
+	QueryViewItem(QListViewItem* pParent, QListViewItem* pAfter, 
+		int nLineCol) : QListViewItem(pParent, pAfter), m_nLineCol(nLineCol)
+		{}
+	
+	/**
+	 * Compares two items.
+	 * If the given column holds line numbers, than the items are compared
+	 * by their numeric values. Otherwise, a standard text comparison is
+	 * performed.
+	 * @param	pItem	The item to compare to
+	 * @param	nCol	The column by which to compare
+	 * @param	bAscend	Whether sorting in ascending or descending order
+	 * @return	0 if the items are equal, 1 if the current item is greater,
+	 * 			-1 if the current item is smaller
+	 */
+	virtual int compare(QListViewItem* pItem, int nCol, bool bAscend) const {
+		if (nCol == m_nLineCol) {
+			uint nLineCur, nLineOther;
+			int nResult;
+
+			// Get the line numbers of each item
+			nLineCur = text(nCol).toUInt();
+			nLineOther = pItem->text(nCol).toUInt();
+
+			// Compare the line numbers
+			nResult = nLineCur - nLineOther;
+			if (nResult == 0)
+				return 0; // Items are equal
+			else if (nResult > 0)
+				return 1; // The first item is greater
+			else
+				return -1; // The second item is greater
+		}
+		
+		return QListViewItem::compare(pItem, nCol, bAscend);
+	}
+	
+private:
+	/** The index of the column holding the line numbers. */
+	int m_nLineCol;
+};
+
+/**
+ * A list view widget for displaying locations in the source code. Each record
+ * (list item) represents a single line of code.
+ * The main purpose of this class is for showing query results (@see
+ * QueryViewDriver), but is can also serve as a base class for any widget
+ * which needs to refer to locations in the source code (@see
+ * HistoryView).
+ * The view has 4 columns, for showing the file path, function name, line
+ * number and line text of a code location.
+ * The widget owns a popup menu which allows users to copy information
+ * from records, filter records, and more.
+ * @author Elad Lahav
+ */
+class QueryView : public QListView
+{
+	Q_OBJECT
+	
+public:
+	QueryView(QWidget* pParent = 0, const char* szName = 0);
+	~QueryView();
+	
+	virtual void addRecord(const QString&, const QString&, const QString&,
+		const QString&, QListViewItem* pParent = NULL);
+	virtual void select(QListViewItem*);
+	virtual void selectNext();
+	virtual void selectPrev();
+	virtual void queryProgress();
+	virtual void queryFinished(uint, QListViewItem* pParent = NULL);
+	
+	/**
+	 * Provides an iterator over the list of query results.
+	 * @author Elad Lahav
+	 */
+	class Iterator
+	{
+	public:
+		/**
+		 * Default constructor.
+		 */
+		Iterator() : m_pItem(NULL) {}
+		
+		/**
+		 * Copy constructor.
+		 * @param	itr	The copied object
+		 */
+		Iterator(const Iterator& itr) : m_pItem(itr.m_pItem) {}
+		
+		/**
+		 * @return	true if the iterator points _beyond_ the end of the list,
+		 *			false otherwise
+		 */
+		bool isEOF() { return m_pItem == NULL; }
+		
+		void next();
+			
+		QString getFunc();
+		QString getFile();
+		QString getLine();
+		QString getText();
+		
+	private:
+		/** Points to the current list item. */
+		QListViewItem* m_pItem;
+		
+		/** 
+		 * Private constructor used to return initialised iterators.
+		 * This constructor can only be called from within QueryView.
+		 * @param	pItem	The initial list item
+		 */
+		Iterator(QListViewItem* pItem) : m_pItem(pItem) {}
+		
+		friend class QueryView;
+	};
+	
+	Iterator getIterator();
+	
+signals:
+	/**
+	 * Notifies the owner widget that it needs to be visible since some
+	 * information is available to display.
+	 * This information may be an advancement of the progress bar,
+	 * availability of query results, etc.
+	 */
+	void needToShow();
+	
+	/**
+	 * Emitted when a list record is selected. 
+	 * Selection is done by either double-clicking a query or by highlighting
+	 * it and then pressing the ENTER key.
+	 * @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:	
+	/** A popup-menu for manipulating query result items. */
+	QueryResultsMenu* m_pQueryMenu;
+	
+	/** A pointer to the last item (used for appending results). */
+	QListViewItem* m_pLastItem;
+	
+	void contentsMouseDoubleClickEvent(QMouseEvent*);
+	
+protected slots:
+	virtual void slotRecordSelected(QListViewItem*);
+	virtual void slotFindDef(const QString&);
+	virtual void slotCopy(QListViewItem*, int);
+	virtual void slotFilter(int);
+	virtual void slotShowAll();
+	virtual void slotRemoveItem(QListViewItem*);
+};
+
+#endif