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-// -*- c++ -*-
-/* This file is part of the KDE libraries
- Copyright (C) 1997 Stephan Kulow <coolo@kde.org>
- Copyright (C) 2001 Carsten Pfeiffer <pfeiffer@kde.org>
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public
- License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
-
- 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., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA.
-*/
-
-#ifndef KFILEVIEW_H
-#define KFILEVIEW_H
-
-class TQPoint;
-class KActionCollection;
-
-#include <tqwidget.h>
-
-#include "kfileitem.h"
-#include "kfile.h"
-
-/**
- * internal class to make easier to use signals possible
- * @internal
- **/
-class TDEIO_EXPORT KFileViewSignaler : public TQObject
-{
- Q_OBJECT
-
-public:
- /**
- * Call this method when an item is selected (depends on single click /
- * double click configuration). Emits the appropriate signal.
- **/
- void activate( const KFileItem *item ) {
- if ( item->isDir() )
- emit dirActivated( item );
- else
- emit fileSelected( item );
- }
- /**
- * emits the highlighted signal for item. Call this in your view class
- * whenever the selection changes.
- */
- void highlightFile(const KFileItem *i) { emit fileHighlighted(i); }
-
- void activateMenu( const KFileItem *i, const TQPoint& pos ) {
- emit activatedMenu( i, pos );
- }
-
- void changeSorting( TQDir::SortSpec sorting ) {
- emit sortingChanged( sorting );
- }
-
- void dropURLs(const KFileItem *i, TQDropEvent*e, const KURL::List&urls) {
- emit dropped(i, e, urls);
- }
-
-signals:
- void dirActivated(const KFileItem*);
-
- void sortingChanged( TQDir::SortSpec );
-
- /**
- * the item maybe be 0L, indicating that we're in multiselection mode and
- * the selection has changed.
- */
- void fileHighlighted(const KFileItem*);
- void fileSelected(const KFileItem*);
- void activatedMenu( const KFileItem *i, const TQPoint& );
- void dropped(const KFileItem *, TQDropEvent*, const KURL::List&);
-};
-
-/**
- * This class defines an interface to all file views. Its intent is
- * to allow to switch the view of the files in the selector very easily.
- * It defines some pure virtual functions, that must be implemented to
- * make a file view working.
- *
- * Since this class is not a widget, but it's meant to be added to other
- * widgets, its most important function is widget. This should return
- * a pointer to the implemented widget.
- *
- * @short A base class for views of the KDE file selector
- * @author Stephan Kulow <coolo@kde.org>
- **/
-class TDEIO_EXPORT KFileView {
-
-public:
- KFileView();
-
- /**
- * Destructor
- */
- virtual ~KFileView();
-
- /**
- * inserts a list of items.
- **/
- void addItemList(const KFileItemList &list);
-
- /**
- * a pure virtual function to get a TQWidget, that can be added to
- * other widgets. This function is needed to make it possible for
- * derived classes to derive from other widgets.
- **/
- virtual TQWidget *widget() = 0;
-
- /**
- * ### As const-method, to be fixed in 3.0
- */
- TQWidget *widget() const { return const_cast<KFileView*>(this)->widget(); }
-
- /**
- * Sets @p filename the current item in the view, if available.
- */
- void setCurrentItem( const TQString &filename );
-
- /**
- * Reimplement this to set @p item the current item in the view, e.g.
- * the item having focus.
- */
- virtual void setCurrentItem( const KFileItem *item ) = 0;
-
- /**
- * @returns the "current" KFileItem, e.g. where the cursor is.
- * Returns 0L when there is no current item (e.g. in an empty view).
- * Subclasses have to implement this.
- */
- virtual KFileItem *currentFileItem() const = 0;
-
- /**
- * Clears the view and all item lists.
- */
- virtual void clear();
-
- /**
- * does a repaint of the view.
- *
- * The default implementation calls
- * \code
- * widget()->repaint(f)
- * \endcode
- **/
- virtual void updateView(bool f = true);
-
- virtual void updateView(const KFileItem*);
-
- /**
- * Removes an item from the list; has to be implemented by the view.
- * Call KFileView::removeItem( item ) after removing it.
- */
- virtual void removeItem(const KFileItem *item);
-
- /**
- * This hook is called when all items of the currently listed directory
- * are listed and inserted into the view, i.e. there won't come any new
- * items anymore.
- */
- virtual void listingCompleted();
-
- /**
- * Returns the sorting order of the internal list. Newly added files
- * are added through this sorting.
- */
- TQDir::SortSpec sorting() const { return m_sorting; }
-
- /**
- * Sets the sorting order of the view.
- *
- * Default is TQDir::Name | TQDir::IgnoreCase | TQDir::DirsFirst
- * Override this in your subclass and sort accordingly (usually by
- * setting the sorting-key for every item and telling QIconView
- * or TQListView to sort.
- *
- * A view may choose to use a different sorting than TQDir::Name, Time
- * or Size. E.g. to sort by mimetype or any possible string. Set the
- * sorting to TQDir::Unsorted for that and do the rest internally.
- *
- * @see sortingKey
- */
- virtual void setSorting(TQDir::SortSpec sort);
-
- /**
- * Tells whether the current items are in reversed order (shortcut to
- * sorting() & TQDir::Reversed).
- */
- bool isReversed() const { return (m_sorting & TQDir::Reversed); }
-
- void sortReversed();
-
- /**
- * @returns the number of dirs and files
- **/
- uint count() const { return filesNumber + dirsNumber; }
-
- /**
- * @returns the number of files.
- **/
- uint numFiles() const { return filesNumber; }
-
- /**
- * @returns the number of directories
- **/
- uint numDirs() const { return dirsNumber; }
-
- virtual void setSelectionMode( KFile::SelectionMode sm );
- virtual KFile::SelectionMode selectionMode() const;
-
- enum ViewMode {
- Files = 1,
- Directories = 2,
- All = Files | Directories
- };
- virtual void setViewMode( ViewMode vm );
- virtual ViewMode viewMode() const { return view_mode; }
-
- /**
- * @returns the localized name of the view, which could be displayed
- * somewhere, e.g. in a menu, where the user can choose between views.
- * @see setViewName
- */
- TQString viewName() const { return m_viewName; }
-
- /**
- * Sets the name of the view, which could be displayed somewhere.
- * E.g. "Image Preview".
- */
- void setViewName( const TQString& name ) { m_viewName = name; }
-
- virtual void setParentView(KFileView *parent);
-
- /**
- * The derived view must implement this function to add
- * the file in the widget.
- *
- * Make sure to call this implementation, i.e.
- * KFileView::insertItem( i );
- *
- */
- virtual void insertItem( KFileItem *i);
-
- /**
- * pure virtual function, that should be implemented to clear
- * the view. At this moment the list is already empty
- **/
- virtual void clearView() = 0;
-
- /**
- * pure virtual function, that should be implemented to make item i
- * visible, i.e. by scrolling the view appropriately.
- */
- virtual void ensureItemVisible( const KFileItem *i ) = 0;
-
- /**
- * Clears any selection, unhighlights everything. Must be implemented by
- * the view.
- */
- virtual void clearSelection() = 0;
-
- /**
- * Selects all items. You may want to override this, if you can implement
- * it more efficiently than calling setSelected() with every item.
- * This works only in Multiselection mode of course.
- */
- virtual void selectAll();
-
- /**
- * Inverts the current selection, i.e. selects all items, that were up to
- * now not selected and deselects the other.
- */
- virtual void invertSelection();
-
- /**
- * Tells the view that it should highlight the item.
- * This function must be implemented by the view.
- **/
- virtual void setSelected(const KFileItem *, bool enable) = 0;
-
- /**
- * @returns whether the given item is currently selected.
- * Must be implemented by the view.
- */
- virtual bool isSelected( const KFileItem * ) const = 0;
-
- /**
- * @returns all currently highlighted items.
- */
- const KFileItemList * selectedItems() const;
-
- /**
- * @returns all items currently available in the current sort-order
- */
- const KFileItemList * items() const;
-
- virtual KFileItem * firstFileItem() const = 0;
- virtual KFileItem * nextItem( const KFileItem * ) const = 0;
- virtual KFileItem * prevItem( const KFileItem * ) const = 0;
-
- /**
- * This is a KFileDialog specific hack: we want to select directories with
- * single click, but not files. But as a generic class, we have to be able
- * to select files on single click as well.
- *
- * This gives us the opportunity to do both.
- *
- * Every view has to decide when to call select( item ) when a file was
- * single-clicked, based on onlyDoubleClickSelectsFiles().
- */
- void setOnlyDoubleClickSelectsFiles( bool enable ) {
- myOnlyDoubleClickSelectsFiles = enable;
- }
-
- /**
- * @returns whether files (not directories) should only be select()ed by
- * double-clicks.
- * @see setOnlyDoubleClickSelectsFiles
- */
- bool onlyDoubleClickSelectsFiles() const {
- return myOnlyDoubleClickSelectsFiles;
- }
-
- /**
- * increases the number of dirs and files.
- * @returns true if the item fits the view mode
- */
- bool updateNumbers(const KFileItem *i);
-
- /**
- * @returns the view-specific action-collection. Every view should
- * add its actions here (if it has any) to make them available to
- * e.g. the KDirOperator's popup-menu.
- */
- virtual KActionCollection * actionCollection() const;
-
- KFileViewSignaler * signaler() const { return sig; }
-
- virtual void readConfig( TDEConfig *, const TQString& group = TQString::null );
- virtual void writeConfig( TDEConfig *, const TQString& group = TQString::null);
-
- /**
- * Various options for drag and drop support.
- * These values can be or'd together.
- * @li @p AutoOpenDirs Automatically open directory after hovering above it
- * for a short while while dragging.
- * @since 3.2
- */
- enum DropOptions {
- AutoOpenDirs = 1
- };
- /**
- * Specify DND options. See DropOptions for details.
- * All options are disabled by default.
- * @since 3.2
- */
- // KDE 4: Make virtual
- void setDropOptions(int options);
-
- /**
- * Returns the DND options in effect.
- * See DropOptions for details.
- * @since 3.2
- */
- int dropOptions();
-
- /**
- * This method calculates a TQString from the given parameters, that is
- * suitable for sorting with e.g. TQIconView or TQListView. Their
- * Item-classes usually have a setKey( const TQString& ) method or a virtual
- * method TQString key() that is used for sorting.
- *
- * @param value Any string that should be used as sort criterion
- * @param isDir Tells whether the key is computed for an item representing
- * a directory (directories are usually sorted before files)
- * @param sortSpec An ORed combination of TQDir::SortSpec flags.
- * Currently, the values IgnoreCase, Reversed and
- * DirsFirst are taken into account.
- */
- static TQString sortingKey( const TQString& value, bool isDir, int sortSpec);
-
- /**
- * An overloaded method that takes not a TQString, but a number as sort
- * criterion. You can use this for file-sizes or dates/times for example.
- * If you use a time_t, you need to cast that to TDEIO::filesize_t because
- * of ambiguity problems.
- */
- static TQString sortingKey( TDEIO::filesize_t value, bool isDir,int sortSpec);
-
- /**
- * @internal
- * delay before auto opening a directory
- */
- static int autoOpenDelay();
-
-protected:
- /**
- * @internal
- * class to distribute the signals
- **/
- KFileViewSignaler *sig;
-
-private:
- static TQDir::SortSpec defaultSortSpec;
- TQDir::SortSpec m_sorting;
- TQString m_viewName;
-
- /**
- * counters
- **/
- uint filesNumber;
- uint dirsNumber;
-
- ViewMode view_mode;
- KFile::SelectionMode selection_mode;
-
- // never use! It's only guaranteed to contain valid items in the items()
- // method!
- mutable KFileItemList m_itemList;
-
- mutable KFileItemList *m_selectedList;
- bool myOnlyDoubleClickSelectsFiles;
-
-protected:
- virtual void virtual_hook( int id, void* data );
- /* @internal for virtual_hook */
- enum { VIRTUAL_SET_DROP_OPTIONS = 1 };
- void setDropOptions_impl(int options);
-private:
- class KFileViewPrivate;
- KFileViewPrivate *d;
-};
-
-#endif // KFILEINFOLISTWIDGET_H