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Diffstat (limited to 'parts/fileselector/kactionselector.h')
| -rw-r--r-- | parts/fileselector/kactionselector.h | 399 |
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diff --git a/parts/fileselector/kactionselector.h b/parts/fileselector/kactionselector.h new file mode 100644 index 00000000..bc82e21b --- /dev/null +++ b/parts/fileselector/kactionselector.h @@ -0,0 +1,399 @@ +/* This file is part of the KDE project + Copyright (C) 2002 Anders Lund <anders.lund@lund.tdcadsl.dk> + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License version 2 as published by the Free Software Foundation. + + This library 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License + along with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. +*/ + +#ifndef _KACTION_SELECTOR_H_ +#define _KACTION_SELECTOR_H_ + +#include <qwidget.h> + +class QListBox; +class QListBoxItem; +class QKeyEvent; +class QEvent; +class QIconSet; + +class KActionSelectorPrivate; + +/** + @short A widget for selecting and arranging actions/objects + This widget allows the user to select from a set of objects and arrange + the order of the selected ones using two list boxes labeled "Available" + and "Used" with horizontal arrows in between to move selected objects between + the two, and vertical arrows on the right to arrange the order of the selected + objects. + + The widget moves objects to the other listbox when doubleclicked if + the property moveOnDoubleClick is set to true (default). See moveOnDoubleClick() + and setMoveOnDoubleClick(). + + The user control the widget using the keyboard if enabled (default), + see keyboardEnabled. + + Note that this may conflist with keyboard selection in the selected list box, + if you set that to anything else than QListBox::Single (which is the default). + + To use it, simply construct an instance and then add items to the two listboxes, + available through lbAvailable() and lbSelected(). Whenever you want, you can retrieve + the selected options using QListBox methods on lbSelected(). + + This way, you can use your own QListBoxItem class, allowing you to easily + store object data in those. + + When an item is moved to a listbox, it is placed below the current item + of that listbox. + + Standard arrow icons are used, but you can use icons of your own choice if desired, + see setButtonIcon(). It is also possible to set tooltips and whatsthis help + for the buttons. See setButtonTooltip() and setButtonWhatsThis(). + + To set whatsthis or tooltips for the listboxes, access them through + availableListbox() and selectedListBox(). + + All the moving buttons are automatically set enabled as expected. + + Signals are sent each time an item is moved, allowing you to follow the + users actions if you need to. See addedToSelection(), removedFromSelection(), + movedUp() and movedDown() + + @author Anders Lund <anders@alweb.dk> +*/ + +class KActionSelector : public QWidget { + Q_OBJECT + Q_ENUMS( ButtonIconSize InsertionPolicy ) + Q_PROPERTY( bool moveOnDoubleClick READ moveOnDoubleClick WRITE setMoveOnDoubleClick ) + Q_PROPERTY( bool keyboardEnabled READ keyboardEnabled WRITE setKeyboardEnabled ) + Q_PROPERTY( QString availableLabel READ availableLabel WRITE setAvailableLabel ) + Q_PROPERTY( QString selectedLabel READ selectedLabel WRITE setSelectedLabel ) + Q_PROPERTY( ButtonIconSize buttonIconSize READ buttonIconSize WRITE setButtonIconSize ) + Q_PROPERTY( InsertionPolicy availableInsertionPolicy READ availableInsertionPolicy WRITE setAvailableInsertionPolicy ) + Q_PROPERTY( InsertionPolicy selectedInsertionPolicy READ selectedInsertionPolicy WRITE setSelectedInsertionPolicy ) + Q_PROPERTY( bool showUpDownButtons READ showUpDownButtons WRITE setShowUpDownButtons ) + +public: + KActionSelector( QWidget *parent=0, const char *name=0 ); + ~KActionSelector(); + + /** + @return The QListBox holding the available actions + */ + QListBox *availableListBox(); + + /** + @return The QListBox holding the selected actions + */ + QListBox *selectedListBox(); + + /** + This enum indentifies the moving buttons + */ + enum MoveButton { + ButtonAdd, + ButtonRemove, + ButtonUp, + ButtonDown + }; + + /** + This enum identifies the icon sizes, used for the move buttons. + The values correspond to the following pixel sizes: + @li SmallIcon - the return value of IconSize( KIcon::Small ), the user defined size + of a small icon in KDE. This is the default setting. + @li Small - 16px + @li Medium - 22px + @li Large - 32px + @li XLarge - 48px + */ + enum ButtonIconSize { + SmallIcon, + Small, + Medium, + Large, + XLarge + }; + + /** + This enum defines policies for where to insert moved items in a listbox. + The following policies are currently defined: + @li BelowCurrent - The item is inserted below the listbox' + currentItem() or at the end if there is no curent item. + @li Sorted - The listbox is sort()ed after one or more items are inserted. + @li AtTop - The item is inserted at index 0 in the listbox. + @li AtBottom - The item is inserted at the end of the listbox. + + @sa availableInsertionPolicy(), setAvailableInsertionPolicy(), + selectedInsertionPolicy(), setSelectedInsertionPolicy(). + */ + enum InsertionPolicy { + BelowCurrent, + Sorted, + AtTop, + AtBottom + }; + + /** + @return Wheather moveOnDoubleClcik is enabled. + + If enabled, an item in any listbox will be moved to the other one whenever + doubleclicked. + @sa setMoveOnDoubleClick() + */ + bool moveOnDoubleClick() const; + + /** + Sets moveOnDoubleClick to @p enable + @sa moveOnDoubleClick() + */ + void setMoveOnDoubleClick( bool enable ); + + /** + @return Weather keyboard control is enabled. + + When Keyboard control is enabled, the widget will react to + the following keyboard actions: + @li CTRL + Right - simulate clicking the add button + @li CTRL + Left - simulate clicking the remove button + @li CTRL + Up - simulate clicking the up button + @li CTRL + Down - simulate clicking the down button + + Additionally, pressing RETURN or ENTER on one of the list boxes + will cause the current item of that listbox to be moved to the other + listbox. + + The keyboard actions are enabled by default. + + @sa setKeyboardEnabled() + */ + bool keyboardEnabled() const; + + /** + Sets the keyboard enabled depending on @p enable. + @sa keyboardEnabled() + */ + void setKeyboardEnabled( bool enable ); + + /** + @return The text of the label for the available items listbox. + */ + QString availableLabel() const; + + /** + Sets the label for the available items listbox to @p text. + Note that this label has the listbox as its @e buddy, so that + if you have a single ampersand in the text, the following character + will become the accellerator to focus te listbox. + */ + void setAvailableLabel( const QString & text ); + + /** + @return the label of the selected items listbox. + */ + QString selectedLabel() const; + + /** + Sets the label for the selected items listbox to @p text. + Note that this label has the listbox as its @e buddy, so that + if you have a single ampersand in the text, the following character + will become the accellerator to focus te listbox. + */ + void setSelectedLabel( const QString & text ); + + /** + @return the current ButtonIconSize. + */ + ButtonIconSize buttonIconSize() const; + + /** + Sets the button icon size. + See ButtonIconSize for the possible values and their pixel meaning. + */ + void setButtonIconSize( ButtonIconSize size ); + + /** + @return The current insertion policy for the available listbox. + The default policy for the available listbox is Sorted. + See also InsertionPolicy, setAvailableInsertionPolicy(). + */ + InsertionPolicy availableInsertionPolicy() const; + + /** + Sets the insertion policy for the available listbox. + See also InsertionPolicy, availableInsertionPolicy(). + */ + void setAvailableInsertionPolicy( InsertionPolicy policy ); + + /** + @return The current insertion policy for the selected listbox. + The default policy for the selected listbox is BelowCurrent. + See also InsertionPolicy, setSelectedInsertionPolicy(). + */ + InsertionPolicy selectedInsertionPolicy() const; + + /** + Sets the insertion policy for the selected listbox. + See also InsertionPolicy, selectedInsertionPolicy(). + */ + void setSelectedInsertionPolicy( InsertionPolicy policy ); + + /** + @return wheather the Up and Down buttons should be displayed. + */ + bool showUpDownButtons() const; + + /** + Sets wheather the Up and Down buttons should be displayed + according to @p show + */ + void setShowUpDownButtons( bool show ); + + /** + Sets the pixmap of the button @p button to @p icon. + It calls SmallIconSet(pm) to generate the icon set. + */ + void setButtonIcon( const QString &icon, MoveButton button ); + + /** + Sets the iconset for button @p button to @p iconset. + You can use this method to et a costum icon set. Either + created by @ref QIconSet, or use the application instance of + @ref KIconLoader (recommended). + */ + void setButtonIconSet( const QIconSet &iconset, MoveButton button ); + + /** + Sets the tooltip for the button @p button to @p tip. + */ + void setButtonTooltip( const QString &tip, MoveButton button ); + + /** + Sets the whatsthis help for button @p button to @p text. + */ + void setButtonWhatsThis( const QString &text, MoveButton button ); + + /** + Sets the enabled state of all moving buttons to reflect the current + options. + + Be sure to call this if you add or removes items to either listbox after the + widget is show()n + */ + void setButtonsEnabled(); + +signals: + /** + Emitted when an item is moved to the "selected" listbox. + */ + void added( QListBoxItem *item ); + + /** + Emitted when an item is moved out of the "selected" listbox. + */ + void removed( QListBoxItem *item ); + + /** + Emitted when an item is moved upwards in the "selected" listbox. + */ + void movedUp( QListBoxItem *item ); + + /** + Emitted when an item is moved downwards in the "selected" listbox. + */ + void movedDown( QListBoxItem *item ); + + /** + Emitted when an item is moved to the "selected" listbox. + */ +// void addedToSelection( QListBoxItem *item ); + +public slots: + /** + Reimplemented for internal reasons. + (calls setButtonsEnabled()) + */ + void polish(); + +protected: + /** + Reimplamented for internal reasons. + */ + void keyPressEvent( QKeyEvent * ); + + /** + Reimplemented for internal reasons. + */ + bool eventFilter( QObject *, QEvent * ); + +private slots: + /** + Move selected item from available box to the selected box + */ + void buttonAddClicked(); + + /** + Move selected item from selected box to available box + */ + void buttonRemoveClicked(); + + /** + Move selected item in selected box upwards + */ + void buttonUpClicked(); + + /** + Move seleted item in selected box downwards + */ + void buttonDownClicked(); + + /** + Moves the item @p item to the other listbox if moveOnDoubleClick is enabled. + */ + void itemDoubleClicked( QListBoxItem *item ); + + /** + connected to both list boxes to set the buttons enabled + */ + void slotCurrentChanged( QListBoxItem * ) { setButtonsEnabled(); }; + +private: + + /** + Move item @p item to the other listbox + */ + void moveItem( QListBoxItem *item ); + + /** + loads the icons for the move buttons. + */ + void loadIcons(); + + /** + @return the index to insert an item into listbox @p lb, + given InsertionPolicy @p policy. + + Note that if policy is Sorted, this will return -1. + Sort the listbox after inserting the item in that case. + */ + int insertionIndex( QListBox *lb, InsertionPolicy policy ); + + /** + Private data storage + */ + KActionSelectorPrivate *d; +}; + +#endif // _KACTION_SELECTOR_H_ |