QtEditingWidget.qo.h

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00001 //# QtEditingWidget.qo.h: Simple editing widgets.
00002 //# Copyright (C) 2009
00003 //# Associated Universities, Inc. Washington DC, USA.
00004 //#
00005 //# This library is free software; you can redistribute it and/or modify it
00006 //# under the terms of the GNU Library General Public License as published by
00007 //# the Free Software Foundation; either version 2 of the License, or (at your
00008 //# option) any later version.
00009 //#
00010 //# This library is distributed in the hope that it will be useful, but WITHOUT
00011 //# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
00012 //# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
00013 //# License for more details.
00014 //#
00015 //# You should have received a copy of the GNU Library General Public License
00016 //# along with this library; if not, write to the Free Software Foundation,
00017 //# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
00018 //#
00019 //# Correspondence concerning AIPS++ should be addressed as follows:
00020 //#        Internet email: aips2-request@nrao.edu.
00021 //#        Postal address: AIPS++ Project Office
00022 //#                        National Radio Astronomy Observatory
00023 //#                        520 Edgemont Road
00024 //#                        Charlottesville, VA 22903-2475 USA
00025 //#
00026 //# $Id: $
00027 #ifndef QTEDITINGWIDGET_QO_H_
00028 #define QTEDITINGWIDGET_QO_H_
00029 
00030 #include <casaqt/QtUtilities/PlotFileWidget.ui.h>
00031 #include <casaqt/QtUtilities/PlotLabelWidget.ui.h>
00032 
00033 #include <casa/BasicSL/String.h>
00034 
00035 namespace casa {
00036 
00037 // A simple parent for editing widgets.
00038 class QtEditingWidget : public QWidget {
00039     Q_OBJECT
00040     
00041 public:
00042     // Constructor which takes an optional parent widget.
00043     QtEditingWidget(QWidget* parent = NULL) : QWidget(parent) { }
00044     
00045     // Destructor.
00046     virtual ~QtEditingWidget() { }
00047     
00048     // Adds any radio buttons in the widget to the given button group.  This
00049     // method should be overridden by children that have radio buttons.
00050     virtual void addRadioButtonsToGroup(QButtonGroup* group) const { (void)group; }
00051     
00052 signals:
00053     // This signal should be emitted whenever the user changes any value
00054     // settings in the GUI.
00055     void changed();
00056     
00057     // This signal should be emitted when the user changes any value settings
00058     // in the GUI AND the new value is different from the last set value.
00059     void differentFromSet();
00060 };
00061 
00062 
00063 // Widget for choosing a label.  Lets the user choose between no label, a
00064 // default label given at construction, or a custom label they can set.
00065 class QtLabelWidget : public QtEditingWidget, Ui::LabelWidget {
00066     Q_OBJECT
00067     
00068 public:
00069     // Constructor which takes the label associated with the "default" option,
00070     // and an optional parent widget.
00071     QtLabelWidget(const String& defaultLabel, QWidget* parent = NULL);
00072     
00073     // Destructor.
00074     ~QtLabelWidget();
00075     
00076     // Gets/Sets the currently set label on the widget.
00077     // <group>
00078     String getValue() const;
00079     void setValue(const String& value);
00080     // </group>
00081     
00082     // Overrides PlotMSWidget::addRadioButtonsToGroup().
00083     void addRadioButtonsToGroup(QButtonGroup* group) const;
00084     
00085 private:
00086     // Default label.
00087     String itsDefault_;
00088 
00089     // Last set label.
00090     String itsValue_;
00091     
00092 private slots:
00093     // Slot for when the set label changes.  The "check" flag can be used to
00094     // avoid emitting the changed signals twice (for example, when one radio
00095     // button turns off when another turns on).
00096     void labelChanged(bool check = true);
00097 };
00098 
00099 
00100 // Widget for choosing a file.
00101 class QtFileWidget : public QtEditingWidget, Ui::FileWidget {
00102     Q_OBJECT
00103     
00104 public:
00105     // Constructor which takes a flag for whether the file is a directory or
00106     // not (for the file chooser), a flag for whether the file is for saving
00107     // (and thus doesn't need to exist, for the file chooser), and an optional
00108     // parent widget.
00109     QtFileWidget(bool chooseDirectory, bool saveFile, QWidget* parent= NULL);
00110     
00111     // Destructor.
00112     ~QtFileWidget();
00113     
00114     // Gets/Sets the currently set file.
00115     // <group>
00116     String getFile() const;
00117     void setFile(const String& file);
00118     // </group>
00119     
00120 private:
00121     // File chooser directory flag.
00122     bool isDirectory_;
00123     
00124     // File chooser save file flag.
00125     bool isSave_;
00126     
00127     // Last set file.
00128     String itsFile_;
00129     
00130 private slots:
00131     // Slot to show a file chooser and set the result in the line edit.
00132     void browse();
00133 
00134     // Slot for when the set file changes.
00135     void fileChanged();
00136     void trimFileName();
00137 };
00138 
00139 }
00140 
00141 #endif /* QTEDITINGWIDGET_QO_H_ */
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