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76 lines
2.7 KiB
C++
76 lines
2.7 KiB
C++
/*
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This file is part of the KDE project
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Copyright (C) 2008 by Dmitry Suzdalev <dimsuz@gmail.com>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#ifndef ACTIONSTREEWIDGET_H
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#define ACTIONSTREEWIDGET_H
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#include <QtGui/QTreeWidget>
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/**
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* Custom tree widget class to make KConfigDialog properly
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* highlight Apply button when some action is changed.
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* We achieve this by adding custom type handling to KConfigDialogManager
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* and by adding a somewhat dummy config entry which gets changed whenever
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* some action is changed in treewidget.
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* KConfigDialog watches this entry for changes and highlights Apply when needed
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*
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* @see KConfigDialogManager
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*/
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class ActionsTreeWidget : public QTreeWidget
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{
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Q_OBJECT
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// this property is int instead of (more logical) bool, because we need a custom handling of
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// "default state" and because of our custom use of this property:
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//
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// We indicate that changes were made to this widget by changing this int value.
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// We use it as "if this value is *CHANGED SOMEHOW*, this means that some changes were made to action list",
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// If we'd make this property bool, KConfigDialog would highlight "Defaults" button whenever
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// this property becomes false, but this is not the way we use this property.
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// So we change it from 0 to 1 periodically when something changes. Both 0, 1 values indicate
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// change.
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//
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// We set it to default only when resetModifiedState() is called, i.e. when Apply btn is being
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// clicked
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//
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// Hope this explains it.
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// Yeah, this class is a trick :) If there's a better way to properly
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// update KConfigDialog buttons whenever "some change occurs to QTreeWidget", let me know (dimsuz)
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Q_PROPERTY( int actionsChanged READ actionsChanged WRITE setActionsChanged USER true )
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public:
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ActionsTreeWidget(QWidget* parent = 0);
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void setActionsChanged(int);
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int actionsChanged() const;
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void resetModifiedState();
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signals:
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void changed();
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private slots:
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void onItemChanged();
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private:
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int m_actionsChanged;
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bool m_modified;
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};
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#endif
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