summaryrefslogtreecommitdiffstats
path: root/akregator/src/articlelistview.cpp
blob: c08867b2118cae6aa9aa4ee3e1bf66f53928a272 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
/*
    This file is part of Akregator.

    Copyright (C) 2004 Stanislav Karchebny <Stanislav.Karchebny@kdemail.net>
                  2005 Frank Osterfeld <frank.osterfeld at kdemail.net>
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program 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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

    As a special exception, permission is given to link this program
    with any edition of TQt, and distribute the resulting executable,
    without including the source code for TQt in the source distribution.
*/

#include "akregatorconfig.h"
#include "actionmanager.h"
#include "articlelistview.h"
#include "article.h"
#include "articlefilter.h"
#include "dragobjects.h"
#include "feed.h"
#include "treenode.h"
#include "treenodevisitor.h"

#include <kstandarddirs.h>
#include <kdebug.h>
#include <kglobal.h>
#include <kiconloader.h>
#include <klocale.h>
#include <kcharsets.h>
#include <kurl.h>

#include <tqdatetime.h>
#include <tqpixmap.h>
#include <tqpopupmenu.h>
#include <tqptrlist.h>
#include <tqvaluelist.h>
#include <tqwhatsthis.h>
#include <tqheader.h>
#include <tqdragobject.h>
#include <tqsimplerichtext.h>
#include <tqpainter.h>
#include <tqapplication.h>

#include <ctime>

namespace Akregator {

class ArticleListView::ArticleListViewPrivate
{
    public:

    ArticleListViewPrivate(ArticleListView* parent) : m_parent(parent) { }

    void ensureCurrentItemVisible()
    {
        if (m_parent->currentItem())
        {
            m_parent->center( m_parent->contentsX(), m_parent->itemPos(m_parent->currentItem()), 0, 9.0 );
        }
    }

    ArticleListView* m_parent;

    /** maps article to article item */
    TQMap<Article, ArticleItem*> articleMap;
    TreeNode* node;
    Akregator::Filters::ArticleMatcher textFilter;
    Akregator::Filters::ArticleMatcher statusFilter;
    enum ColumnMode { groupMode, feedMode };
    ColumnMode columnMode;
    int feedWidth;
    bool noneSelected;
    
    ColumnLayoutVisitor* columnLayoutVisitor;
};
  
class ArticleListView::ColumnLayoutVisitor : public TreeNodeVisitor
{
    public:
        ColumnLayoutVisitor(ArticleListView* view) : m_view(view) {}

        virtual bool visitTagNode(TagNode* /*node*/)
        {
            if (m_view->d->columnMode == ArticleListViewPrivate::feedMode)
            {
                m_view->setColumnWidth(1, m_view->d->feedWidth);
                m_view->d->columnMode = ArticleListViewPrivate::groupMode;
            }
            return true;
        }
        
        virtual bool visitFolder(Folder* /*node*/)
        {
            if (m_view->d->columnMode == ArticleListViewPrivate::feedMode)
            {
                m_view->setColumnWidth(1, m_view->d->feedWidth);
                m_view->d->columnMode = ArticleListViewPrivate::groupMode;
            }
            return true;
        }
        
        virtual bool visitFeed(Feed* /*node*/)
        {
            if (m_view->d->columnMode == ArticleListViewPrivate::groupMode)
            {    
                m_view->d->feedWidth = m_view->columnWidth(1);
                m_view->hideColumn(1);
                m_view->d->columnMode = ArticleListViewPrivate::feedMode;
            }
            return true;
        }
    private:

        ArticleListView* m_view;
    
};

class ArticleListView::ArticleItem : public TDEListViewItem
    {
        friend class ArticleListView;

        public:
            ArticleItem( TQListView *parent, const Article& a);
            ~ArticleItem();

            Article& article();

            void paintCell ( TQPainter * p, const TQColorGroup & cg, int column, int width, int align );
            virtual int compare(TQListViewItem *i, int col, bool ascending) const;

            void updateItem(const Article& article);

            virtual ArticleItem* itemAbove() { return static_cast<ArticleItem*>(TDEListViewItem::itemAbove()); }
            
            virtual ArticleItem* nextSibling() { return static_cast<ArticleItem*>(TDEListViewItem::nextSibling()); }

        private:
            Article m_article;
            time_t m_pubDate;
            static TQPixmap keepFlag() {
                   static TQPixmap s_keepFlag = TQPixmap(locate("data", "akregator/pics/akregator_flag.png"));
                   return s_keepFlag;
	    }
};

// FIXME: Remove resolveEntities for KDE 4.0, it's now done in the parser
ArticleListView::ArticleItem::ArticleItem( TQListView *parent, const Article& a)
    : TDEListViewItem( parent, KCharsets::resolveEntities(a.title()), a.feed()->title(), TDEGlobal::locale()->formatDateTime(a.pubDate(), true, false) ), m_article(a), m_pubDate(a.pubDate().toTime_t())
{
    if (a.keep())
        setPixmap(0, keepFlag());
}
 
ArticleListView::ArticleItem::~ArticleItem()
{
}

Article& ArticleListView::ArticleItem::article()
{
    return m_article;
}

// paint ze peons
void ArticleListView::ArticleItem::paintCell ( TQPainter * p, const TQColorGroup & cg, int column, int width, int align )
{
    if (article().status() == Article::Read)
        TDEListViewItem::paintCell( p, cg, column, width, align );
    else
    {
        // if article status is unread or new, we change the color: FIXME: make colors configurable
        TQColorGroup cg2(cg);
    
        if (article().status() == Article::Unread)
            cg2.setColor(TQColorGroup::Text, TQt::blue);
        else // New
            cg2.setColor(TQColorGroup::Text, TQt::red);
    
        TDEListViewItem::paintCell( p, cg2, column, width, align );
    }

}

void ArticleListView::ArticleItem::updateItem(const Article& article)
{
    m_article = article;
    setPixmap(0, m_article.keep() ? keepFlag() : TQPixmap());
    setText(0, KCharsets::resolveEntities(m_article.title()));
    setText(1, m_article.feed()->title());
    setText(2, TDEGlobal::locale()->formatDateTime(m_article.pubDate(), true, false));
}

int ArticleListView::ArticleItem::compare(TQListViewItem *i, int col, bool ascending) const {
    if (col == 2)
    {
        ArticleItem* item = static_cast<ArticleItem*>(i);
        if (m_pubDate == item->m_pubDate)
            return 0;
        return (m_pubDate > item->m_pubDate) ? 1 : -1;
    }
    return TDEListViewItem::compare(i, col, ascending);
}

/* ==================================================================================== */

ArticleListView::ArticleListView(TQWidget *parent, const char *name)
    : TDEListView(parent, name)
{
    d = new ArticleListViewPrivate(this);
    d->noneSelected = true;
    d->node = 0;
    d->columnMode = ArticleListViewPrivate::feedMode;

    d->columnLayoutVisitor = new ColumnLayoutVisitor(this);
    setMinimumSize(250, 150);
    addColumn(i18n("Article"));
    addColumn(i18n("Feed"));
    addColumn(i18n("Date"));
    setSelectionMode(TQListView::Extended);
    setColumnWidthMode(2, TQListView::Maximum);
    setColumnWidthMode(1, TQListView::Manual);
    setColumnWidthMode(0, TQListView::Manual);
    setRootIsDecorated(false);
    setItemsRenameable(false);
    setItemsMovable(false);
    setAllColumnsShowFocus(true);
    setDragEnabled(true); // FIXME before we implement dragging between archived feeds??
    setAcceptDrops(false); // FIXME before we implement dragging between archived feeds??
    setFullWidth(false);
    
    setShowSortIndicator(true);
    setDragAutoScroll(true);
    setDropHighlighter(false);

    int c = Settings::sortColumn();
    setSorting((c >= 0 && c <= 2) ? c : 2, Settings::sortAscending());

    int w;
    w = Settings::titleWidth();
    if (w > 0) {
        setColumnWidth(0, w);
    }
    
    w = Settings::feedWidth();
    if (w > 0) {
        setColumnWidth(1, w);
    }
    
    w = Settings::dateWidth();
    if (w > 0) {
        setColumnWidth(2, w);
    }
    
    d->feedWidth = columnWidth(1);
    hideColumn(1);

    header()->setStretchEnabled(true, 0);

    TQWhatsThis::add(this, i18n("<h2>Article list</h2>"
        "Here you can browse articles from the currently selected feed. "
        "You can also manage articles, as marking them as persistent (\"Keep Article\") or delete them, using the right mouse button menu."
        "To view the web page of the article, you can open the article internally in a tab or in an external browser window."));

    connect(this, TQT_SIGNAL(currentChanged(TQListViewItem*)), this, TQT_SLOT(slotCurrentChanged(TQListViewItem* )));
    connect(this, TQT_SIGNAL(selectionChanged()), this, TQT_SLOT(slotSelectionChanged()));
    connect(this, TQT_SIGNAL(doubleClicked(TQListViewItem*, const TQPoint&, int)),  this, TQT_SLOT(slotDoubleClicked(TQListViewItem*, const TQPoint&, int)) );
    connect(this, TQT_SIGNAL(contextMenu(TDEListView*, TQListViewItem*, const TQPoint&)),
            this, TQT_SLOT(slotContextMenu(TDEListView*, TQListViewItem*, const TQPoint&)));

    connect(this, TQT_SIGNAL(mouseButtonPressed(int, TQListViewItem *, const TQPoint &, int)), this, TQT_SLOT(slotMouseButtonPressed(int, TQListViewItem *, const TQPoint &, int)));
}

Article ArticleListView::currentArticle() const
{
    ArticleItem* ci = dynamic_cast<ArticleItem*>(TDEListView::currentItem());
    return (ci && !selectedItems().isEmpty()) ? ci->article() : Article();
}

void ArticleListView::slotSetFilter(const Akregator::Filters::ArticleMatcher& textFilter, const Akregator::Filters::ArticleMatcher& statusFilter)
{
    if ( (textFilter != d->textFilter) || (statusFilter != d->statusFilter) )
    {
        d->textFilter = textFilter;
        d->statusFilter = statusFilter;
               
        applyFilters();
    }
}

void ArticleListView::slotShowNode(TreeNode* node)
{
    if (node == d->node)
        return;

    slotClear();

    if (!node)
        return;

    d->node = node;
    connectToNode(node);

    d->columnLayoutVisitor->visit(node);

    setUpdatesEnabled(false);

    TQValueList<Article> articles = d->node->articles();

    TQValueList<Article>::ConstIterator end = articles.end();
    TQValueList<Article>::ConstIterator it = articles.begin();
    
    for (; it != end; ++it)
    {
        if (!(*it).isNull() && !(*it).isDeleted())
        {
            ArticleItem* ali = new ArticleItem(this, *it);
            d->articleMap.insert(*it, ali);
        }
    }

    sort();
    applyFilters();
    d->noneSelected = true;
    setUpdatesEnabled(true);
    triggerUpdate();
}

void ArticleListView::slotClear()
{
    if (d->node)
        disconnectFromNode(d->node);
        
    d->node = 0;
    d->articleMap.clear();
    clear();
}

void ArticleListView::slotArticlesAdded(TreeNode* /*node*/, const TQValueList<Article>& list)
{
    setUpdatesEnabled(false);
    
    bool statusActive = !(d->statusFilter.matchesAll());
    bool textActive = !(d->textFilter.matchesAll());
    
    for (TQValueList<Article>::ConstIterator it = list.begin(); it != list.end(); ++it)
    {
        if (!d->articleMap.contains(*it))
        {
            if (!(*it).isNull() && !(*it).isDeleted())
            {
                ArticleItem* ali = new ArticleItem(this, *it);
                ali->setVisible( (!statusActive ||  d->statusFilter.matches( ali->article()))
                        && (!textActive || d->textFilter.matches( ali->article())) );
                d->articleMap.insert(*it, ali);
            }
        }
    }
    setUpdatesEnabled(true);
    triggerUpdate();
}

void ArticleListView::slotArticlesUpdated(TreeNode* /*node*/, const TQValueList<Article>& list)
{
    setUpdatesEnabled(false);

    // if only one item is selected and this selected item
    // is deleted, we will select the next item in the list
    bool singleSelected = selectedArticles().count() == 1;
    
    bool statusActive = !(d->statusFilter.matchesAll());
    bool textActive = !(d->textFilter.matchesAll());
    
    TQListViewItem* next = 0; // the item to select if a selected item is deleted
    
    for (TQValueList<Article>::ConstIterator it = list.begin(); it != list.end(); ++it)
    {
        
        if (!(*it).isNull() && d->articleMap.contains(*it))
        {
            ArticleItem* ali = d->articleMap[*it];

            if (ali)
            {
                if ((*it).isDeleted()) // if article was set to deleted, delete item
                {
                    if (singleSelected && ali->isSelected())
                    {
                        if (ali->itemBelow())
                            next = ali->itemBelow();
                        else if (ali->itemAbove())
                            next = ali->itemAbove();
                    }
                    
                    d->articleMap.remove(*it);
                    delete ali;
                }
                else
                {
                    ali->updateItem(*it);
                    // if the updated article matches the filters after the update,
                    // make visible. If it matched them before but not after update,
                    // they should stay visible (to not confuse users)
                    if ((!statusActive || d->statusFilter.matches(ali->article()))
                        && (!textActive || d->textFilter.matches( ali->article())) )
                        ali->setVisible(true);
                }
            } // if ali
        }
    }

    // if the only selected item was deleted, select
    // an item next to it
    if (singleSelected && next != 0)
    {
        setSelected(next, true);
        setCurrentItem(next);
    }
    else
    {
        d->noneSelected = true;
    }
    

    setUpdatesEnabled(true);
    triggerUpdate();
}

void ArticleListView::slotArticlesRemoved(TreeNode* /*node*/, const TQValueList<Article>& list)
{
    // if only one item is selected and this selected item
    // is deleted, we will select the next item in the list
    bool singleSelected = selectedArticles().count() == 1;

    TQListViewItem* next = 0; // the item to select if a selected item is deleted
    
    setUpdatesEnabled(false);
    
    for (TQValueList<Article>::ConstIterator it = list.begin(); it != list.end(); ++it)
    {
        if (d->articleMap.contains(*it))
        {
            ArticleItem* ali = d->articleMap[*it];
            d->articleMap.remove(*it);
            
            if (singleSelected && ali->isSelected())
            {
                if (ali->itemBelow())
                    next = ali->itemBelow();
                else if (ali->itemAbove())
                    next = ali->itemAbove();
            }
            
            delete ali;
        }
    }
    
    // if the only selected item was deleted, select
    // an item next to it
    if (singleSelected && next != 0)
    {
        setSelected(next, true);
        setCurrentItem(next);
    }
    else
    {
        d->noneSelected = true;
    }
     
    setUpdatesEnabled(true);
    triggerUpdate();
}
            
void ArticleListView::connectToNode(TreeNode* node)
{
    connect(node, TQT_SIGNAL(signalDestroyed(TreeNode*)), this, TQT_SLOT(slotClear()) );
    connect(node, TQT_SIGNAL(signalArticlesAdded(TreeNode*, const TQValueList<Article>&)), this, TQT_SLOT(slotArticlesAdded(TreeNode*, const TQValueList<Article>&)) );
    connect(node, TQT_SIGNAL(signalArticlesUpdated(TreeNode*, const TQValueList<Article>&)), this, TQT_SLOT(slotArticlesUpdated(TreeNode*, const TQValueList<Article>&)) );
    connect(node, TQT_SIGNAL(signalArticlesRemoved(TreeNode*, const TQValueList<Article>&)), this, TQT_SLOT(slotArticlesRemoved(TreeNode*, const TQValueList<Article>&)) );
}

void ArticleListView::disconnectFromNode(TreeNode* node)
{
    disconnect(node, TQT_SIGNAL(signalDestroyed(TreeNode*)), this, TQT_SLOT(slotClear()) );
    disconnect(node, TQT_SIGNAL(signalArticlesAdded(TreeNode*, const TQValueList<Article>&)), this, TQT_SLOT(slotArticlesAdded(TreeNode*, const TQValueList<Article>&)) );
    disconnect(node, TQT_SIGNAL(signalArticlesUpdated(TreeNode*, const TQValueList<Article>&)), this, TQT_SLOT(slotArticlesUpdated(TreeNode*, const TQValueList<Article>&)) );
    disconnect(node, TQT_SIGNAL(signalArticlesRemoved(TreeNode*, const TQValueList<Article>&)), this, TQT_SLOT(slotArticlesRemoved(TreeNode*, const TQValueList<Article>&)) );
}

void ArticleListView::applyFilters()
{
    bool statusActive = !(d->statusFilter.matchesAll());
    bool textActive = !(d->textFilter.matchesAll());
    
    ArticleItem* ali = 0;
    
    if (!statusActive && !textActive)
    {
        for (TQListViewItemIterator it(this); it.current(); ++it)
        {
            (static_cast<ArticleItem*> (it.current()))->setVisible(true);
        }
    }
    else if (statusActive && !textActive)
    {
        for (TQListViewItemIterator it(this); it.current(); ++it)
        {
            ali = static_cast<ArticleItem*> (it.current());
            ali->setVisible( d->statusFilter.matches( ali->article()) );
        }
    }
    else if (!statusActive && textActive)
    {
        for (TQListViewItemIterator it(this); it.current(); ++it)
        {
            ali = static_cast<ArticleItem*> (it.current());
            ali->setVisible( d->textFilter.matches( ali->article()) );
        }
    }
    else // both true
    {
        for (TQListViewItemIterator it(this); it.current(); ++it)
        {
            ali = static_cast<ArticleItem*> (it.current());
            ali->setVisible( d->statusFilter.matches( ali->article()) 
                    && d->textFilter.matches( ali->article()) );
        }
    }

}

int ArticleListView::visibleArticles()
{
    int visible = 0;
    ArticleItem* ali = 0;
    for (TQListViewItemIterator it(this); it.current(); ++it) {
        ali = static_cast<ArticleItem*> (it.current());
        visible += ali->isVisible() ? 1 : 0;
    }
    return visible;
}

// from amarok :)
void ArticleListView::paintInfoBox(const TQString &message)
{
    TQPainter p( viewport() );
    TQSimpleRichText t( message, TQApplication::font() );

    if ( t.width()+30 >= viewport()->width() || t.height()+30 >= viewport()->height() )
            //too big, giving up
        return;

    const uint w = t.width();
    const uint h = t.height();
    const uint x = (viewport()->width() - w - 30) / 2 ;
    const uint y = (viewport()->height() - h - 30) / 2 ;

    p.setBrush( colorGroup().background() );
    p.drawRoundRect( x, y, w+30, h+30, (8*200)/w, (8*200)/h );
    t.draw( &p, x+15, y+15, TQRect(), colorGroup() );
}

void ArticleListView::viewportPaintEvent(TQPaintEvent *e)
{

    TDEListView::viewportPaintEvent(e);
    
    if(!e)
        return;
        
    TQString message = TQString();
    
    //kdDebug() << "visible articles: " << visibleArticles() << endl;
    
    if(childCount() != 0) // article list is not empty
    {
        if (visibleArticles() == 0)
        {
        message = i18n("<div align=center>"
                        "<h3>No matches</h3>"
                        "Filter does not match any articles, "
                        "please change your criteria and try again."
                        "</div>");
        }
        
    }
    else // article list is empty
    {
        if (!d->node) // no node selected
        {
            message = i18n("<div align=center>"
                       "<h3>No feed selected</h3>"
                       "This area is article list. "
                       "Select a feed from the feed list "
                       "and you will see its articles here."
                       "</div>");
        }
        else // empty node
        {
            // TODO: we could display message like "empty node, choose "fetch" to update it" 
        }
    }
    
    if (!message.isNull())
        paintInfoBox(message);
}

TQDragObject *ArticleListView::dragObject()
{
    TQDragObject* d = 0;
    TQValueList<Article> articles = selectedArticles();
    if (!articles.isEmpty())
    {
        d = new ArticleDrag(articles, this);
    }
    return d;
}

void ArticleListView::slotPreviousArticle()
{
    ArticleItem* ali = 0;
    if (!currentItem() || selectedItems().isEmpty())
        ali = dynamic_cast<ArticleItem*>(lastChild());
    else
        ali = dynamic_cast<ArticleItem*>(currentItem()->itemAbove());
    
    if (ali)
    {
        Article a = ali->article();
        setCurrentItem(d->articleMap[a]);
        clearSelection();
        setSelected(d->articleMap[a], true);
        d->ensureCurrentItemVisible();
    }
}

void ArticleListView::slotNextArticle()
{
    ArticleItem* ali = 0;
    if (!currentItem() || selectedItems().isEmpty())
        ali = dynamic_cast<ArticleItem*>(firstChild());
    else
        ali = dynamic_cast<ArticleItem*>(currentItem()->itemBelow());
    
    if (ali)
    {
        Article a = ali->article();
        setCurrentItem(d->articleMap[a]);
        clearSelection();
        setSelected(d->articleMap[a], true);
        d->ensureCurrentItemVisible();
    }
}

void ArticleListView::slotNextUnreadArticle()
{
    ArticleItem* start = 0L;
    if (!currentItem() || selectedItems().isEmpty())
        start = dynamic_cast<ArticleItem*>(firstChild());
    else
        start = dynamic_cast<ArticleItem*>(currentItem()->itemBelow() ? currentItem()->itemBelow() : firstChild());

    ArticleItem* i = start;
    ArticleItem* unread = 0L;
    
    do
    {
        if (i == 0L)
            i = static_cast<ArticleItem*>(firstChild());
        else
        {
            if (i->article().status() != Article::Read)
                unread = i;
            else 
                i = static_cast<ArticleItem*>(i && i->itemBelow() ? i->itemBelow() : firstChild());
        }
    }
    while (!unread && i != start);

    if (unread)
    {
        Article a = unread->article();
        setCurrentItem(d->articleMap[a]);
        clearSelection();
        setSelected(d->articleMap[a], true);
        d->ensureCurrentItemVisible();
    }
}

void ArticleListView::slotPreviousUnreadArticle()
{
    ArticleItem* start = 0L;
    if (!currentItem() || selectedItems().isEmpty())
        start = dynamic_cast<ArticleItem*>(lastChild());
    else
        start = dynamic_cast<ArticleItem*>(currentItem()->itemAbove() ? currentItem()->itemAbove() : firstChild());

    ArticleItem* i = start;
    ArticleItem* unread = 0L;
    
    do
    {
        if (i == 0L)
            i = static_cast<ArticleItem*>(lastChild());
        else
        {
            if (i->article().status() != Article::Read)
                unread = i;
            else 
                i = static_cast<ArticleItem*>(i->itemAbove() ? i->itemAbove() : lastChild());
        }
    }
    while ( !(unread != 0L || i == start) );

    if (unread)
    {
        Article a = unread->article();
        setCurrentItem(d->articleMap[a]);
        clearSelection();
        setSelected(d->articleMap[a], true);
        d->ensureCurrentItemVisible();
    }
}

void ArticleListView::keyPressEvent(TQKeyEvent* e)
{
    e->ignore();
}

void ArticleListView::slotSelectionChanged()
{
    // if there is only one article in the list, currentItem is set initially to 
    // that article item, although the user hasn't selected it. If the user selects
    // the article, selection changes, but currentItem does not.
    // executed. So we have to handle this case by observing selection changes.
    
    if (d->noneSelected)
    {
        d->noneSelected = false;
        slotCurrentChanged(currentItem());
    }
}

void ArticleListView::slotCurrentChanged(TQListViewItem* item)
{
    ArticleItem* ai = dynamic_cast<ArticleItem*> (item);
    if (ai)
        emit signalArticleChosen( ai->article() );
    else
    {
        d->noneSelected = true;
        emit signalArticleChosen( Article() );
    }
} 


void ArticleListView::slotDoubleClicked(TQListViewItem* item, const TQPoint& p, int i)
{
    ArticleItem* ali = dynamic_cast<ArticleItem*>(item);
    if (ali)
        emit signalDoubleClicked(ali->article(), p, i);
}

void ArticleListView::slotContextMenu(TDEListView* /*list*/, TQListViewItem* /*item*/, const TQPoint& p)
{
    TQWidget* w = ActionManager::getInstance()->container("article_popup");
    TQPopupMenu* popup = static_cast<TQPopupMenu *>(w);
    if (popup)
        popup->exec(p);
}

void ArticleListView::slotMouseButtonPressed(int button, TQListViewItem* item, const TQPoint& p, int column)
{
    ArticleItem* ali = dynamic_cast<ArticleItem*>(item);
    if (ali)
        emit signalMouseButtonPressed(button, ali->article(), p, column);
}

ArticleListView::~ArticleListView()
{
    Settings::setTitleWidth(columnWidth(0));
    Settings::setFeedWidth(columnWidth(1) > 0 ? columnWidth(1) : d->feedWidth);
    Settings::setSortColumn(sortColumn());
    Settings::setSortAscending(sortOrder() == Ascending);
    Settings::writeConfig();
    delete d->columnLayoutVisitor;
    delete d;
    d = 0;
}

TQValueList<Article> ArticleListView::selectedArticles() const
{
    TQValueList<Article> ret;
    TQPtrList<TQListViewItem> items = selectedItems(false);
    for (TQListViewItem* i = items.first(); i; i = items.next() )
        ret.append((static_cast<ArticleItem*>(i))->article());
    return ret;
}

} // namespace Akregator

#include "articlelistview.moc"
// vim: ts=4 sw=4 et