Created V0.3.x branch and moved the head into the trunk directory.

git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@246 b45a01b8-16f6-495d-af2f-9b41ad6348cc

retroshare-gui/src/gui/advsearch/expressionwidget.h

@@ -0,0 +1,93 @@
+/****************************************************************
+*  RetroShare is distributed under the following license:
+*
+*  Copyright (C) 2006, 2007 The RetroShare Team
+*
+*  This program is free software; you can redistribute it and/or
+*  modify it under the terms of the GNU General Public License
+*  as published by the Free Software Foundation; either version 2
+*  of the License, or (at your option) any later version.
+*
+*  This program is distributed in the hope that it will be useful,
+*  but WITHOUT ANY WARRANTY; without even the implied warranty of
+*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*  GNU General Public License for more details.
+*
+*  You should have received a copy of the GNU General Public License
+*  along with this program; if not, write to the Free Software
+*  Foundation, Inc., 51 Franklin Street, Fifth Floor, 
+*  Boston, MA  02110-1301, USA.
+****************************************************************/
+#ifndef _ExpressionWidget_h_
+#define _ExpressionWidget_h_
+#include <iostream>
+#include <QWidget>
+#include <QLabel>
+
+#include "rsiface/rsexpr.h"
+#include "guiexprelement.h"
+#include "ui_expressionwidget.h"
+
+
+/**
+    Represents an Advanced Search GUI Expression object which acts as a container
+    for a series of GuiExprElement objects. The structure of the expression can
+    change dynamically, dependant on user choices made while assembling an expression. 
+    The default appearance is simply a search on name.
+*/
+class ExpressionWidget : public QWidget, public Ui::ExpressionWidget 
+{
+    Q_OBJECT
+
+public:
+    ExpressionWidget( QWidget * parent = 0, bool initial=false );
+    
+    /** delivers the expression represented by this widget
+     the operator to join this expression with any previous 
+     expressions is provided by the getOperator method */
+    Expression* getRsExpression();
+
+    /** supplies the operator to be used when joining this expression
+        to the whole query */
+    LogicalOperator getOperator();
+    
+    QString toString();
+
+signals:
+    /** associates an expression object with the delete event */
+    void signalDelete(ExpressionWidget*);
+
+private slots:
+    /** emits the signalDelete signal with a pointer to this object
+        for use by listeners */
+    void deleteExpression();
+
+    /** dynbamically changes the structure of the expression based on
+        the terms combobox changes */
+    void adjustExprForTermType(int);
+    
+    /** dynamically adjusts the expression dependant on the choices 
+        made in the condition combobox e.g. inRange and equals
+        have different parameter fields */
+    void adjustExprForConditionType(int);
+
+
+private:
+    QLayout * createLayout(QWidget* parent = 0);
+    
+    bool isStringSearchExpression();
+    
+    QList <GuiExprElement *> * elements;
+    QLayout * exprLayout;
+
+    ExprOpElement *        exprOpElem;
+    ExprTermsElement *     exprTermElem;
+    ExprConditionElement * exprCondElem;
+    ExprParamElement*      exprParamElem;
+    
+    bool inRangedConfig;
+    bool isFirst;
+    ExprSearchType searchType;
+};
+
+#endif // _ExpressionWidget_h_