src/dolphinview.h

   1 /***************************************************************************
   2  *   Copyright (C) 2006 by Peter Penz <peter.penz@gmx.at>                  *
   3  *   Copyright (C) 2006 by Gregor Kališnik <gregor@podnapisi.net>          *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  19  ***************************************************************************/
  20
  21
  22 #ifndef _DOLPHINVIEW_H_
  23 #define _DOLPHINVIEW_H_
  24
  25 #include <qwidget.h>
  26 //Added by qt3to4:
  27 #include <QDropEvent>
  28 #include <Q3ValueList>
  29 #include <QMouseEvent>
  30 #include <QVBoxLayout>
  31 #include <kparts/part.h>
  32 #include <kfileitem.h>
  33 #include <kfileiconview.h>
  34 #include <kio/job.h>
  35 #include <urlnavigator.h>
  36
  37 #include <QListView>
  38
  39 class QPainter;
  40 class KUrl;
  41 class KDirModel;
  42 class QLineEdit;
  43 class UrlNavigator;
  44 class QTimer;
  45 class Q3IconViewItem;
  46 class Q3ListViewItem;
  47 class Q3VBoxLayout;
  48 class DolphinMainWindow;
  49 class DolphinDirLister;
  50 class DolphinStatusBar;
  51 class DolphinIconsView;
  52 class DolphinDetailsView;
  53 class DolphinSortFilterProxyModel;
  54 class ViewProperties;
  55 class KProgress;
  56 class KDirModel;
  57 class FilterBar;
  58
  59 class QModelIndex;
  60
  61 /**
  62  * @short Represents a view for the directory content
  63  * including the navigation bar and status bar.
  64  *
  65  * View modes for icons, details and previews are supported. Currently
  66  * Dolphin allows to have up to two views inside the main window.
  67  *
  68  * @see DolphinIconsView
  69  * @see DolphinDetailsView
  70  * @see UrlNavigator
  71  * @see DolphinStatusBar
  72  *
  73  * @author Peter Penz <peter.penz@gmx.at>
  74  */
  75 class DolphinView : public QWidget
  76 {
  77     Q_OBJECT
  78
  79 public:
  80         /**
  81      * Defines the view mode for a directory. The view mode
  82      * can be defined when constructing a DolphinView. The
  83      * view mode is automatically updated if the directory itself
  84      * defines a view mode (see class ViewProperties for details).
  85      */
  86     enum Mode
  87     {
  88         /**
  89          * The directory items are shown as icons including an
  90          * icon name. */
  91         IconsView = 0,
  92
  93         /**
  94          * The icon, the name and at least the size of the directory
  95          * items are shown in a table. It is possible to add columns
  96          * for date, group and permissions.
  97          */
  98         DetailsView = 1,
  99         MaxModeEnum = DetailsView
 100     };
 101
 102     /** Defines the sort order for the items of a directory. */
 103     enum Sorting
 104     {
 105         SortByName = 0,
 106         SortBySize = 1,
 107         SortByDate = 2,
 108         MaxSortEnum = SortByDate
 109     };
 110
 111     DolphinView(DolphinMainWindow* mainwindow,
 112                 QWidget *parent,
 113                 const KUrl& url,
 114                 Mode mode = IconsView,
 115                 bool showHiddenFiles = false);
 116
 117     virtual ~DolphinView();
 118
 119     /**
 120      * Sets the current active Url.
 121      * The signals UrlNavigator::urlChanged and UrlNavigator::historyChanged
 122      * are submitted.
 123      */
 124     void setUrl(const KUrl& url);
 125
 126     /** Returns the current active Url. */
 127     const KUrl& url() const;
 128
 129     void requestActivation();
 130     bool isActive() const;
 131
 132     void setMode(Mode mode);
 133     Mode mode() const;
 134     void setShowHiddenFiles(bool show);
 135     bool showHiddenFiles() const;
 136
 137     void setViewProperties(const ViewProperties& props);
 138
 139     /**
 140      * Triggers the renaming of the currently selected items, where
 141      * the user must input a new name for the items.
 142      */
 143     void renameSelectedItems();
 144
 145     /**
 146      * Selects all items.
 147      * @see DolphinView::selectedItems()
 148      */
 149     void selectAll();
 150
 151     /**
 152      * Inverts the current selection: selected items get unselected,
 153      * unselected items get selected.
 154      * @see DolphinView::selectedItems()
 155      */
 156     void invertSelection();
 157
 158     /**
 159      * Goes back one step in the Url history. The signals
 160      * UrlNavigator::urlChanged and UrlNavigator::historyChanged
 161      * are submitted.
 162      */
 163     void goBack();
 164
 165     /**
 166      * Goes forward one step in the Url history. The signals
 167      * UrlNavigator::urlChanged and UrlNavigator::historyChanged
 168      * are submitted.
 169      */
 170     void goForward();
 171
 172     /**
 173      * Goes up one step of the Url path. The signals
 174      * UrlNavigator::urlChanged and UrlNavigator::historyChanged
 175      * are submitted.
 176      */
 177     void goUp();
 178
 179     /**
 180      * Goes to the home Url. The signals UrlNavigator::urlChanged
 181      * and UrlNavigator::historyChanged are submitted.
 182      */
 183     void goHome();
 184
 185     /**
 186      * Sets the Url of the navigation bar to an editable state
 187      * if \a editable is true. If \a editable is false, each part of
 188      * the location is presented by a button for a fast navigation.
 189      */
 190     void setUrlEditable(bool editable);
 191
 192     /**
 193      * Returns the complete Url history. The index 0 indicates the oldest
 194      * history element.
 195      * @param index     Output parameter which indicates the current
 196      *                  index of the location.
 197      */
 198     const Q3ValueList<UrlNavigator::HistoryElem> urlHistory(int& index) const;
 199
 200     /**
 201      * Returns true, if at least one item is selected.
 202      */
 203     bool hasSelection() const;
 204
 205     /**
 206      * Returns the selected items. The list is empty if no item has been
 207      * selected.
 208      * @see DolphinView::selectedUrls()
 209      */
 210     KFileItemList selectedItems() const;
 211
 212     /**
 213      * Returns a list of Urls for all selected items. An empty list
 214      * is returned, if no item is selected.
 215      * @see DolphinView::selectedItems()
 216      */
 217     KUrl::List selectedUrls() const;
 218
 219     /**
 220      * Returns the current item, where the cursor is. 0 is returned, if there is no
 221      * current item (e. g. if the view is empty). Note that the current item must
 222      * not be a selected item.
 223      * @see DolphinView::selectedItems()
 224      */
 225     const KFileItem* currentFileItem() const;
 226
 227     /**
 228      * Opens the context menu for the item indicated by \a fileInfo
 229      * on the position \a pos. If 0 is passed for the file info, a context
 230      * menu for the viewport is opened.
 231      */
 232     void openContextMenu(KFileItem* fileInfo, const QPoint& pos);
 233
 234     /**
 235      * Renames the filename of the source Url by the new file name.
 236      * If the new file name already exists, a dialog is opened which
 237      * asks the user to enter a new name.
 238      */
 239     void rename(const KUrl& source, const QString& newName);
 240
 241     /** Returns the status bar of the view. */
 242     DolphinStatusBar* statusBar() const;
 243
 244     /**
 245      * Returns the x-position of the view content.
 246      * The content of the view might be larger than the visible area
 247      * and hence a scrolling must be done.
 248      */
 249     int contentsX() const;
 250
 251     /**
 252      * Returns the y-position of the view content.
 253      * The content of the view might be larger than the visible area
 254      * and hence a scrolling must be done.
 255      */
 256     int contentsY() const;
 257
 258     /**
 259      * Returns true, if the Url shown by the navigation bar is editable.
 260      * @see UrlNavigator
 261      */
 262     bool isUrlEditable() const;
 263
 264     /** Increases the size of the current set view mode. */
 265     void zoomIn();
 266
 267     /** Decreases the size of the current set view mode. */
 268     void zoomOut();
 269
 270     /**
 271      * Returns true, if zooming in is possible. If false is returned,
 272      * the minimal zoom size is possible.
 273      */
 274     bool isZoomInPossible() const;
 275
 276     /**
 277      * Returns true, if zooming out is possible. If false is returned,
 278      * the maximum zoom size is possible.
 279      */
 280     bool isZoomOutPossible() const;
 281
 282     /** Sets the sort order of the items inside a directory (see DolphinView::Sorting). */
 283     void setSorting(Sorting sorting);
 284
 285     /** Returns the sort order of the items inside a directory (see DolphinView::Sorting). */
 286     Sorting sorting() const;
 287
 288     /** Sets the sort order (Qt::Ascending or Qt::Descending) for the items. */
 289     void setSortOrder(Qt::SortOrder order);
 290
 291     /** Returns the current used sort order (Qt::Ascending or Qt::Descending). */
 292     Qt::SortOrder sortOrder() const;
 293
 294     /** Refreshs the view settings by reading out the stored settings. */
 295     void refreshSettings();
 296
 297     /**
 298      * Updates the number of items (= number of files + number of
 299      * directories) in the statusbar. If files are selected, the number
 300      * of selected files and the sum of the filesize is shown.
 301      */
 302     void updateStatusBar();
 303
 304     /** Returns the UrlNavigator of the view for read access. */
 305     const UrlNavigator* urlNavigator() const { return m_urlNavigator; }
 306
 307     /**
 308      * Triggers to request user information for the item given
 309      * by the Url \a url. The signal requestItemInfo is emitted,
 310      * which provides a way for widgets to get an indication to update
 311      * the item information.
 312      */
 313     void emitRequestItemInfo(const KUrl& url);
 314
 315     /** Returns true, if the filter bar is visible. */
 316     bool isFilterBarVisible() const;
 317
 318     /**
 319      * Return the DolphinMainWindow this View belongs to. It is guranteed
 320      * that we have one.
 321      */
 322     DolphinMainWindow* mainWindow() const ;
 323
 324 public slots:
 325     void reload();
 326     void slotUrlListDropped(QDropEvent* event,
 327                             const KUrl::List& urls,
 328                             const KUrl& url);
 329
 330     /**
 331      * Slot that popups the filter bar like FireFox popups his Search bar.
 332      */
 333     void slotShowFilterBar(bool show);
 334
 335     /**
 336      * Declare this View as the activeview of the mainWindow()
 337      */
 338     void declareViewActive();
 339
 340 signals:
 341     /** Is emitted if Url of the view has been changed to \a url. */
 342     void urlChanged(const KUrl& url);
 343
 344     /**
 345      * Is emitted if the view mode (IconsView, DetailsView,
 346      * PreviewsView) has been changed.
 347      */
 348     void modeChanged();
 349
 350     /** Is emitted if the 'show hidden files' property has been changed. */
 351     void showHiddenFilesChanged();
 352
 353     /** Is emitted if the sorting by name, size or date has been changed. */
 354     void sortingChanged(DolphinView::Sorting sorting);
 355
 356     /** Is emitted if the sort order (ascending or descending) has been changed. */
 357     void sortOrderChanged(Qt::SortOrder order);
 358
 359     /**
 360      * Is emitted if information of an item is requested to be shown e. g. in the sidebar.
 361      * It the Url is empty, no item information request is pending.
 362      */
 363     void requestItemInfo(const KUrl& url);
 364
 365     /** Is emitted if the contents has been moved to \a x, \a y. */
 366     void contentsMoved(int x, int y);
 367
 368     /**
 369      * Is emitted whenever the selection has been changed. The current selection can
 370      * be retrieved by mainWindow()->activeView()->selectedItems() or by
 371      * mainWindow()->activeView()->selectedUrls().
 372      */
 373     void selectionChanged();
 374
 375     /**
 376      * Is emitted whenever the filter bar has been turned show or hidden.
 377      */
 378     void showFilterBarChanged(bool shown);
 379
 380 protected:
 381     /** @see QWidget::mouseReleaseEvent */
 382     virtual void mouseReleaseEvent(QMouseEvent* event);
 383
 384 private slots:
 385     void loadDirectory(const KUrl& kurl);
 386     void triggerIconsViewItem(Q3IconViewItem *item);
 387     void triggerItem(const QModelIndex& index);
 388     void updateUrl();
 389
 390     void slotPercent(int percent);
 391     void slotClear();
 392     void slotDeleteItem(KFileItem* item);
 393     void slotCompleted();
 394     void slotInfoMessage(const QString& msg);
 395     void slotErrorMessage(const QString& msg);
 396     void slotGrabActivation();
 397     void emitSelectionChangedSignal();
 398     void closeFilterBar();
 399
 400     /**
 401      * Is invoked shortly before the contents of a view implementation
 402      * has been moved and emits the signal contentsMoved. Note that no
 403      * signal is emitted when the contents moving is only temporary by
 404      * e. g. reloading a directory.
 405      */
 406     void slotContentsMoving(int x, int y);
 407
 408     /**
 409      * Filters the currently shown items by \a nameFilter. All items
 410      * which contain the given filter string will be shown.
 411      */
 412     void slotChangeNameFilter(const QString& nameFilter);
 413
 414 private:
 415     void startDirLister(const KUrl& url, bool reload = false);
 416
 417     /**
 418      * Returns the default text of the status bar, if no item is
 419      * selected.
 420      */
 421     QString defaultStatusBarText() const;
 422
 423     /**
 424      * Returns the text for the status bar, if at least one item
 425      * is selected.
 426      */
 427     QString selectionStatusBarText() const;
 428
 429     /**
 430      * Returns the string representation for the index \a index
 431      * for renaming \itemCount items.
 432      */
 433     QString renameIndexPresentation(int index, int itemCount) const;
 434
 435     /**
 436      * Applies the current view mode m_mode to the
 437      * view implementation.
 438      */
 439     void applyModeToView();
 440
 441     /**
 442      * Returns the column index used in the KDirModel depending on \a sorting.
 443      */
 444     int columnIndex(Sorting sorting) const;
 445
 446     /**
 447      * Selects all items by using the selection flags \a flags. This is a helper
 448      * method for the slots DolphinView::selectAll() and DolphinView::invertSelection().
 449      */
 450     void selectAll(QItemSelectionModel::SelectionFlags flags);
 451
 452 private:
 453     bool m_refreshing;
 454     bool m_showProgress;
 455     Mode m_mode;
 456
 457     int m_iconSize;
 458     int m_folderCount;
 459     int m_fileCount;
 460
 461     DolphinMainWindow* m_mainWindow;
 462     QVBoxLayout* m_topLayout;
 463     UrlNavigator* m_urlNavigator;
 464     DolphinIconsView* m_iconsView;
 465     FilterBar *m_filterBar;
 466     DolphinStatusBar* m_statusBar;
 467
 468     KDirModel* m_dirModel;
 469     DolphinDirLister* m_dirLister;
 470     DolphinSortFilterProxyModel* m_proxyModel;
 471
 472 };
 473
 474 #endif // _DOLPHINVIEW_H_