basetexteditor.cpp 195 KB
Newer Older
1
/**************************************************************************
con's avatar
con committed
2
3
4
**
** This file is part of Qt Creator
**
hjk's avatar
hjk committed
5
** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
con's avatar
con committed
6
**
7
** Contact: Nokia Corporation (qt-info@nokia.com)
con's avatar
con committed
8
**
9
** Commercial Usage
10
**
11
12
13
14
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
15
**
16
** GNU Lesser General Public License Usage
17
**
18
19
20
21
22
23
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
24
**
25
** If you are unsure which license is appropriate for your use, please
hjk's avatar
hjk committed
26
** contact the sales department at http://qt.nokia.com/contact.
con's avatar
con committed
27
**
28
**************************************************************************/
hjk's avatar
hjk committed
29

con's avatar
con committed
30
#include "texteditor_global.h"
hjk's avatar
hjk committed
31

con's avatar
con committed
32
#include "basetextdocument.h"
33
#include "basetextdocumentlayout.h"
con's avatar
con committed
34
#include "basetexteditor_p.h"
35
#include "behaviorsettings.h"
con's avatar
con committed
36
#include "codecselector.h"
37
#include "completionsettings.h"
38
#include "completionsupport.h"
39
#include "tabsettings.h"
40
41
#include "texteditorconstants.h"
#include "texteditorplugin.h"
42
#include "syntaxhighlighter.h"
43
44
#include "tooltip.h"
#include "tipcontents.h"
con's avatar
con committed
45

46
#include <aggregation/aggregate.h>
47
#include <coreplugin/actionmanager/actionmanager.h>
48
49
#include <coreplugin/actionmanager/actioncontainer.h>
#include <coreplugin/actionmanager/command.h>
con's avatar
con committed
50
51
#include <coreplugin/coreconstants.h>
#include <coreplugin/editormanager/editormanager.h>
52
#include <coreplugin/icore.h>
53
#include <coreplugin/manhattanstyle.h>
54
#include <extensionsystem/pluginmanager.h>
con's avatar
con committed
55
56
#include <find/basetextfind.h>
#include <utils/linecolumnlabel.h>
hjk's avatar
hjk committed
57
#include <utils/qtcassert.h>
58
#include <utils/stylehelper.h>
con's avatar
con committed
59
60
61
62
63
64

#include <QtCore/QCoreApplication>
#include <QtCore/QTextCodec>
#include <QtCore/QFile>
#include <QtCore/QDebug>
#include <QtCore/QTimer>
65
#include <QtCore/QTimeLine>
66
#include <QtCore/QTime>
con's avatar
con committed
67
68
69
70
71
72
73
74
75
76
77
78
79
#include <QtGui/QAbstractTextDocumentLayout>
#include <QtGui/QApplication>
#include <QtGui/QKeyEvent>
#include <QtGui/QLabel>
#include <QtGui/QLayout>
#include <QtGui/QPainter>
#include <QtGui/QPrinter>
#include <QtGui/QPrintDialog>
#include <QtGui/QScrollBar>
#include <QtGui/QShortcut>
#include <QtGui/QStyle>
#include <QtGui/QSyntaxHighlighter>
#include <QtGui/QTextCursor>
80
#include <QtGui/QTextDocumentFragment>
con's avatar
con committed
81
82
83
84
#include <QtGui/QTextBlock>
#include <QtGui/QTextLayout>
#include <QtGui/QToolBar>
#include <QtGui/QInputDialog>
85
#include <QtGui/QMenu>
con's avatar
con committed
86

87
88
//#define DO_FOO

con's avatar
con committed
89
90
91
92
using namespace TextEditor;
using namespace TextEditor::Internal;

namespace TextEditor {
93
namespace Internal {
con's avatar
con committed
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

class TextEditExtraArea : public QWidget {
    BaseTextEditor *textEdit;
public:
    TextEditExtraArea(BaseTextEditor *edit):QWidget(edit) {
        textEdit = edit;
        setAutoFillBackground(true);
    }
public:

    QSize sizeHint() const {
        return QSize(textEdit->extraAreaWidth(), 0);
    }
protected:
    void paintEvent(QPaintEvent *event){
        textEdit->extraAreaPaintEvent(event);
    }
    void mousePressEvent(QMouseEvent *event){
        textEdit->extraAreaMouseEvent(event);
    }
    void mouseMoveEvent(QMouseEvent *event){
        textEdit->extraAreaMouseEvent(event);
    }
    void mouseReleaseEvent(QMouseEvent *event){
        textEdit->extraAreaMouseEvent(event);
    }
    void leaveEvent(QEvent *event){
        textEdit->extraAreaLeaveEvent(event);
    }

    void wheelEvent(QWheelEvent *event) {
        QCoreApplication::sendEvent(textEdit->viewport(), event);
    }
};

129
130
} // namespace Internal
} // namespace TextEditor
con's avatar
con committed
131

132
133
134
135
ITextEditor *BaseTextEditor::openEditorAt(const QString &fileName, int line, int column,
                                 const QString &editorKind,
                                 Core::EditorManager::OpenEditorFlags flags,
                                 bool *newEditor)
con's avatar
con committed
136
{
137
    Core::EditorManager *editorManager = Core::EditorManager::instance();
138
    editorManager->cutForwardNavigationHistory();
139
    editorManager->addCurrentPositionToNavigationHistory();
140
    Core::IEditor *editor = editorManager->openEditor(fileName, editorKind,
141
            flags, newEditor);
con's avatar
con committed
142
143
144
145
146
    TextEditor::ITextEditor *texteditor = qobject_cast<TextEditor::ITextEditor *>(editor);
    if (texteditor) {
        texteditor->gotoLine(line, column);
        return texteditor;
    }
147

con's avatar
con committed
148
149
150
    return 0;
}

151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
static void convertToPlainText(QString &txt)
{
    QChar *uc = txt.data();
    QChar *e = uc + txt.size();

    for (; uc != e; ++uc) {
        switch (uc->unicode()) {
        case 0xfdd0: // QTextBeginningOfFrame
        case 0xfdd1: // QTextEndOfFrame
        case QChar::ParagraphSeparator:
        case QChar::LineSeparator:
            *uc = QLatin1Char('\n');
            break;
        case QChar::Nbsp:
            *uc = QLatin1Char(' ');
            break;
        default:
            ;
        }
    }
}

con's avatar
con committed
173
174
175
BaseTextEditor::BaseTextEditor(QWidget *parent)
    : QPlainTextEdit(parent)
{
176
    d = new BaseTextEditorPrivate;
con's avatar
con committed
177
178
179
180
181
    d->q = this;
    d->m_extraArea = new TextEditExtraArea(this);
    d->m_extraArea->setMouseTracking(true);
    setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);

182
    d->m_overlay = new TextEditorOverlay(this);
183
    d->m_snippetOverlay = new TextEditorOverlay(this);
184
    d->m_searchResultOverlay = new TextEditorOverlay(this);
185
    d->m_refactorOverlay = new RefactorOverlay(this);
186

con's avatar
con committed
187
188
189
190
191
192
193
194
195
196
    d->setupDocumentSignals(d->m_document);

    d->m_lastScrollPos = -1;

    // from RESEARCH

    setLayoutDirection(Qt::LeftToRight);
    viewport()->setMouseTracking(true);
    d->extraAreaSelectionAnchorBlockNumber
        = d->extraAreaToggleMarkBlockNumber
mae's avatar
mae committed
197
        = d->extraAreaHighlightFoldedBlockNumber
con's avatar
con committed
198
199
        = -1;

mae's avatar
mae committed
200
    d->visibleFoldedBlockNumber = d->suggestedVisibleFoldedBlockNumber = -1;
con's avatar
con committed
201
202
203
204
205
206
207
208
209
210
211

    connect(this, SIGNAL(blockCountChanged(int)), this, SLOT(slotUpdateExtraAreaWidth()));
    connect(this, SIGNAL(modificationChanged(bool)), this, SLOT(slotModificationChanged(bool)));
    connect(this, SIGNAL(cursorPositionChanged()), this, SLOT(slotCursorPositionChanged()));
    connect(this, SIGNAL(updateRequest(QRect, int)), this, SLOT(slotUpdateRequest(QRect, int)));
    connect(this, SIGNAL(selectionChanged()), this, SLOT(slotSelectionChanged()));

//     (void) new QShortcut(tr("CTRL+L"), this, SLOT(centerCursor()), 0, Qt::WidgetShortcut);
//     (void) new QShortcut(tr("F9"), this, SLOT(slotToggleMark()), 0, Qt::WidgetShortcut);
//     (void) new QShortcut(tr("F11"), this, SLOT(slotToggleBlockVisible()));

212
213
214
215
#ifdef DO_FOO
    (void) new QShortcut(tr("CTRL+D"), this, SLOT(doFoo()));
#endif

con's avatar
con committed
216
217
218
219
220
221
222
223
224
225

    // parentheses matcher
    d->m_formatRange = true;
    d->m_matchFormat.setForeground(Qt::red);
    d->m_rangeFormat.setBackground(QColor(0xb4, 0xee, 0xb4));
    d->m_mismatchFormat.setBackground(Qt::magenta);
    d->m_parenthesesMatchingTimer = new QTimer(this);
    d->m_parenthesesMatchingTimer->setSingleShot(true);
    connect(d->m_parenthesesMatchingTimer, SIGNAL(timeout()), this, SLOT(_q_matchParentheses()));

226
227
228
229
    d->m_highlightBlocksTimer = new QTimer(this);
    d->m_highlightBlocksTimer->setSingleShot(true);
    connect(d->m_highlightBlocksTimer, SIGNAL(timeout()), this, SLOT(_q_highlightBlocks()));

230
231
232
233
234
    d->m_requestAutoCompletionTimer = new QTimer(this);
    d->m_requestAutoCompletionTimer->setSingleShot(true);
    d->m_requestAutoCompletionTimer->setInterval(500);
    connect(d->m_requestAutoCompletionTimer, SIGNAL(timeout()), this, SLOT(_q_requestAutoCompletion()));

235
    d->m_animator = 0;
con's avatar
con committed
236
237
238
239

    d->m_searchResultFormat.setBackground(QColor(0xffef0b));

    slotUpdateExtraAreaWidth();
con's avatar
con committed
240
    updateHighlights();
con's avatar
con committed
241
242
    setFrameStyle(QFrame::NoFrame);

243
244
245
246
    d->m_delayedUpdateTimer = new QTimer(this);
    d->m_delayedUpdateTimer->setSingleShot(true);
    connect(d->m_delayedUpdateTimer, SIGNAL(timeout()), viewport(), SLOT(update()));

con's avatar
con committed
247
248
    connect(Core::EditorManager::instance(), SIGNAL(currentEditorChanged(Core::IEditor*)),
            this, SLOT(currentEditorChanged(Core::IEditor*)));
mae's avatar
mae committed
249
250

    d->m_moveLineUndoHack = false;
con's avatar
con committed
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
}

BaseTextEditor::~BaseTextEditor()
{
    delete d;
    d = 0;
}

QString BaseTextEditor::mimeType() const
{
    return d->m_document->mimeType();
}

void BaseTextEditor::setMimeType(const QString &mt)
{
    d->m_document->setMimeType(mt);
}

void BaseTextEditor::print(QPrinter *printer)
{
    const bool oldFullPage =  printer->fullPage();
    printer->setFullPage(true);
    QPrintDialog *dlg = new QPrintDialog(printer, this);
    dlg->setWindowTitle(tr("Print Document"));
    if (dlg->exec() == QDialog::Accepted) {
        d->print(printer);
    }
    printer->setFullPage(oldFullPage);
    delete dlg;
}

mae's avatar
mae committed
282
static int foldBoxWidth(const QFontMetrics &fm)
283
284
285
286
287
{
    const int lineSpacing = fm.lineSpacing();
    return lineSpacing + lineSpacing%2 + 1;
}

con's avatar
con committed
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
static void printPage(int index, QPainter *painter, const QTextDocument *doc,
                      const QRectF &body, const QRectF &titleBox,
                      const QString &title)
{
    painter->save();

    painter->translate(body.left(), body.top() - (index - 1) * body.height());
    QRectF view(0, (index - 1) * body.height(), body.width(), body.height());

    QAbstractTextDocumentLayout *layout = doc->documentLayout();
    QAbstractTextDocumentLayout::PaintContext ctx;

    painter->setFont(QFont(doc->defaultFont()));
    QRectF box = titleBox.translated(0, view.top());
    int dpix = painter->device()->logicalDpiX();
    int dpiy = painter->device()->logicalDpiY();
    int mx = 5 * dpix / 72.0;
    int my = 2 * dpiy / 72.0;
    painter->fillRect(box.adjusted(-mx, -my, mx, my), QColor(210, 210, 210));
    if (!title.isEmpty())
        painter->drawText(box, Qt::AlignCenter, title);
    const QString pageString = QString::number(index);
    painter->drawText(box, Qt::AlignRight, pageString);

    painter->setClipRect(view);
    ctx.clip = view;
    // don't use the system palette text as default text color, on HP/UX
    // for example that's white, and white text on white paper doesn't
    // look that nice
    ctx.palette.setColor(QPalette::Text, Qt::black);

    layout->draw(painter, ctx);

    painter->restore();
}

void BaseTextEditorPrivate::print(QPrinter *printer)
{
    QTextDocument *doc = q->document();

    QString title = q->displayName();
    if (title.isEmpty())
        printer->setDocName(title);


    QPainter p(printer);

    // Check that there is a valid device to print to.
    if (!p.isActive())
        return;

    doc = doc->clone(doc);

    QTextOption opt = doc->defaultTextOption();
    opt.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
    doc->setDefaultTextOption(opt);

    (void)doc->documentLayout(); // make sure that there is a layout


    QColor background = q->palette().color(QPalette::Base);
    bool backgroundIsDark = background.value() < 128;

    for (QTextBlock srcBlock = q->document()->firstBlock(), dstBlock = doc->firstBlock();
         srcBlock.isValid() && dstBlock.isValid();
         srcBlock = srcBlock.next(), dstBlock = dstBlock.next()) {


        QList<QTextLayout::FormatRange> formatList = srcBlock.layout()->additionalFormats();
        if (backgroundIsDark) {
            // adjust syntax highlighting colors for better contrast
            for (int i = formatList.count() - 1; i >=0; --i) {
                QTextCharFormat &format = formatList[i].format;
                if (format.background().color() == background) {
                    QBrush brush = format.foreground();
                    QColor color = brush.color();
                    int h,s,v,a;
                    color.getHsv(&h, &s, &v, &a);
                    color.setHsv(h, s, qMin(128, v), a);
                    brush.setColor(color);
                    format.setForeground(brush);
                }
                format.setBackground(Qt::white);
            }
        }

        dstBlock.layout()->setAdditionalFormats(formatList);
    }

    QAbstractTextDocumentLayout *layout = doc->documentLayout();
    layout->setPaintDevice(p.device());

    int dpiy = p.device()->logicalDpiY();
    int margin = (int) ((2/2.54)*dpiy); // 2 cm margins

    QTextFrameFormat fmt = doc->rootFrame()->frameFormat();
    fmt.setMargin(margin);
    doc->rootFrame()->setFrameFormat(fmt);

    QRectF pageRect(printer->pageRect());
    QRectF body = QRectF(0, 0, pageRect.width(), pageRect.height());
    QFontMetrics fontMetrics(doc->defaultFont(), p.device());

    QRectF titleBox(margin,
                    body.top() + margin
                    - fontMetrics.height()
                    - 6 * dpiy / 72.0,
                    body.width() - 2*margin,
                    fontMetrics.height());
    doc->setPageSize(body.size());

    int docCopies;
    int pageCopies;
    if (printer->collateCopies() == true){
        docCopies = 1;
        pageCopies = printer->numCopies();
    } else {
        docCopies = printer->numCopies();
        pageCopies = 1;
    }

    int fromPage = printer->fromPage();
    int toPage = printer->toPage();
    bool ascending = true;

    if (fromPage == 0 && toPage == 0) {
        fromPage = 1;
        toPage = doc->pageCount();
    }
    // paranoia check
    fromPage = qMax(1, fromPage);
    toPage = qMin(doc->pageCount(), toPage);

    if (printer->pageOrder() == QPrinter::LastPageFirst) {
        int tmp = fromPage;
        fromPage = toPage;
        toPage = tmp;
        ascending = false;
    }

    for (int i = 0; i < docCopies; ++i) {

        int page = fromPage;
        while (true) {
            for (int j = 0; j < pageCopies; ++j) {
                if (printer->printerState() == QPrinter::Aborted
                    || printer->printerState() == QPrinter::Error)
                    goto UserCanceled;
                printPage(page, &p, doc, body, titleBox, title);
                if (j < pageCopies - 1)
                    printer->newPage();
            }

            if (page == toPage)
                break;

            if (ascending)
                ++page;
            else
                --page;

            printer->newPage();
        }

        if ( i < docCopies - 1)
            printer->newPage();
    }

UserCanceled:
    delete doc;
}


461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
int BaseTextEditorPrivate::visualIndent(const QTextBlock &block) const
{
    if (!block.isValid())
        return 0;
    const QTextDocument *document = block.document();
    int i = 0;
    while (i < block.length()) {
        if (!document->characterAt(block.position() + i).isSpace()) {
            QTextCursor cursor(block);
            cursor.setPosition(block.position() + i);
            return q->cursorRect(cursor).x();
        }
        ++i;
    }

    return 0;
}
con's avatar
con committed
478
479
480
481
482
483

ITextMarkable *BaseTextEditor::markableInterface() const
{
    return baseTextDocument()->documentMarker();
}

484
BaseTextEditorEditable *BaseTextEditor::editableInterface() const
con's avatar
con committed
485
486
487
488
489
490
491
492
493
494
495
496
497
498
{
    if (!d->m_editable) {
        d->m_editable = const_cast<BaseTextEditor*>(this)->createEditableInterface();
        connect(this, SIGNAL(textChanged()),
                d->m_editable, SIGNAL(contentsChanged()));
        connect(this, SIGNAL(changed()),
                d->m_editable, SIGNAL(changed()));
    }
    return d->m_editable;
}


void BaseTextEditor::currentEditorChanged(Core::IEditor *editor)
{
499
    if (editor == editableInterface()) {
con's avatar
con committed
500
501
        if (d->m_document->hasDecodingError()) {
            Core::EditorManager::instance()->showEditorInfoBar(QLatin1String(Constants::SELECT_ENCODING),
502
503
                tr("<b>Error:</b> Could not decode \"%1\" with \"%2\"-encoding. Editing not possible.")
                    .arg(displayName()).arg(QString::fromLatin1(d->m_document->codec()->name())),
con's avatar
con committed
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
                tr("Select Encoding"),
                this, SLOT(selectEncoding()));
        }
    }
}

void BaseTextEditor::selectEncoding()
{
    BaseTextDocument *doc = d->m_document;
    CodecSelector codecSelector(this, doc);

    switch (codecSelector.exec()) {
    case CodecSelector::Reload:
        doc->reload(codecSelector.selectedCodec());
        setReadOnly(d->m_document->hasDecodingError());
        if (doc->hasDecodingError())
            currentEditorChanged(Core::EditorManager::instance()->currentEditor());
        else
            Core::EditorManager::instance()->hideEditorInfoBar(QLatin1String(Constants::SELECT_ENCODING));
        break;
    case CodecSelector::Save:
        doc->setCodec(codecSelector.selectedCodec());
        Core::EditorManager::instance()->saveEditor(editableInterface());
        break;
    case CodecSelector::Cancel:
        break;
    }
}

void BaseTextEditor::triggerCompletions()
{
    emit requestAutoCompletion(editableInterface(), true);
}

Roberto Raggi's avatar
Roberto Raggi committed
538
539
540
541
542
void BaseTextEditor::triggerQuickFix()
{
    emit requestQuickFix(editableInterface());
}

543
544
545
546
547
548
QString BaseTextEditor::msgTextTooLarge(quint64 size)
{
    return tr("The text is too large to be displayed (%1 MB).").
           arg(size >> 20);
}

con's avatar
con committed
549
550
bool BaseTextEditor::createNew(const QString &contents)
{
551
552
553
554
555
    if (contents.size() > Core::EditorManager::maxTextFileSize()) {
        setPlainText(msgTextTooLarge(contents.size()));
        document()->setModified(false);
        return false;
    }
con's avatar
con committed
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
    setPlainText(contents);
    document()->setModified(false);
    return true;
}

bool BaseTextEditor::open(const QString &fileName)
{
    if (d->m_document->open(fileName)) {
        moveCursor(QTextCursor::Start);
        setReadOnly(d->m_document->hasDecodingError());
        return true;
    }
    return false;
}

571
572
573
/*
  Collapses the first comment in a file, if there is only whitespace above
  */
mae's avatar
mae committed
574
void BaseTextEditorPrivate::foldLicenseHeader()
575
576
{
    QTextDocument *doc = q->document();
577
    BaseTextDocumentLayout *documentLayout = qobject_cast<BaseTextDocumentLayout*>(doc->documentLayout());
578
579
580
    QTC_ASSERT(documentLayout, return);
    QTextBlock block = doc->firstBlock();
    const TabSettings &ts = m_document->tabSettings();
581
    while (block.isValid() && block.isVisible()) {
582
        QString text = block.text();
mae's avatar
mae committed
583
584
585
586
587
588
589
590
591
        if (BaseTextDocumentLayout::canFold(block) && block.next().isVisible()) {
            if (text.trimmed().startsWith(QLatin1String("/*"))) {
                BaseTextDocumentLayout::doFoldOrUnfold(block, false);
                moveCursorVisible();
                documentLayout->requestUpdate();
                documentLayout->emitDocumentSizeChanged();
                break;
            }
        }
592
593
594
595
596
597
        if (ts.firstNonSpace(text) < text.size())
            break;
        block = block.next();
    }
}

598
599
600
601
602
603
604
const Utils::ChangeSet &BaseTextEditor::changeSet() const
{
    return d->m_changeSet;
}

void BaseTextEditor::setChangeSet(const Utils::ChangeSet &changeSet)
{
Roberto Raggi's avatar
Roberto Raggi committed
605
606
    using namespace Utils;

607
    d->m_changeSet = changeSet;
Roberto Raggi's avatar
Roberto Raggi committed
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

    foreach (const ChangeSet::EditOp &op, changeSet.operationList()) {
        // ### TODO: process the edit operation

        switch (op.type) {
        case ChangeSet::EditOp::Replace:
            break;

        case ChangeSet::EditOp::Move:
            break;

        case ChangeSet::EditOp::Insert:
            break;

        case ChangeSet::EditOp::Remove:
            break;

        case ChangeSet::EditOp::Flip:
            break;

        case ChangeSet::EditOp::Copy:
            break;

        default:
            break;
        } // switch
    }
635
636
}

637
Core::IFile *BaseTextEditor::file()
con's avatar
con committed
638
639
640
641
642
643
{
    return d->m_document;
}

void BaseTextEditor::editorContentsChange(int position, int charsRemoved, int charsAdded)
{
644
645
646
    if (d->m_animator)
        d->m_animator->finish();

con's avatar
con committed
647
    d->m_contentsChanged = true;
648
    QTextDocument *doc = document();
con's avatar
con committed
649
650
651
652
653
654

    // Keep the line numbers and the block information for the text marks updated
    if (charsRemoved != 0) {
        d->updateMarksLineNumber();
        d->updateMarksBlock(document()->findBlock(position));
    } else {
655
656
        const QTextBlock posBlock = doc->findBlock(position);
        const QTextBlock nextBlock = doc->findBlock(position + charsAdded);
con's avatar
con committed
657
658
659
660
661
662
663
664
        if (posBlock != nextBlock) {
            d->updateMarksLineNumber();
            d->updateMarksBlock(posBlock);
            d->updateMarksBlock(nextBlock);
        } else {
            d->updateMarksBlock(posBlock);
        }
    }
665

666
667
668
669
670
671
672
673
674
    if (d->m_snippetOverlay->isVisible()) {
        QTextCursor cursor = textCursor();
        cursor.setPosition(position);
        if (!d->m_snippetOverlay->hasCursorInSelection(cursor)) {
            d->m_snippetOverlay->hide();
            d->m_snippetOverlay->clear();
        }
    }

675
    if (doc->isRedoAvailable())
676
        emit editableInterface()->contentsChangedBecauseOfUndo();
con's avatar
con committed
677
678
679
680
}

void BaseTextEditor::slotSelectionChanged()
{
mae's avatar
mae committed
681
682
683
    if (d->m_inBlockSelectionMode && !textCursor().hasSelection()) {
        d->m_inBlockSelectionMode = false;
        d->m_blockSelection.clear();
con's avatar
con committed
684
        viewport()->update();
mae's avatar
mae committed
685
686
    }

687
688
    if (!d->m_selectBlockAnchor.isNull() && !textCursor().hasSelection())
        d->m_selectBlockAnchor = QTextCursor();
689
690
691

    // Clear any link which might be showing when the selection changes
    clearLink();
con's avatar
con committed
692
693
}

694
695
696
void BaseTextEditor::gotoBlockStart()
{
    QTextCursor cursor = textCursor();
697
    if (TextBlockUserData::findPreviousOpenParenthesis(&cursor, false)) {
698
        setTextCursor(cursor);
699
700
        _q_matchParentheses();
    }
701
702
703
704
705
}

void BaseTextEditor::gotoBlockEnd()
{
    QTextCursor cursor = textCursor();
706
    if (TextBlockUserData::findNextClosingParenthesis(&cursor, false)) {
707
        setTextCursor(cursor);
708
709
        _q_matchParentheses();
    }
710
711
712
713
714
}

void BaseTextEditor::gotoBlockStartWithSelection()
{
    QTextCursor cursor = textCursor();
715
    if (TextBlockUserData::findPreviousOpenParenthesis(&cursor, true)) {
716
        setTextCursor(cursor);
717
718
        _q_matchParentheses();
    }
719
720
721
722
723
}

void BaseTextEditor::gotoBlockEndWithSelection()
{
    QTextCursor cursor = textCursor();
724
    if (TextBlockUserData::findNextClosingParenthesis(&cursor, true)) {
725
        setTextCursor(cursor);
726
727
728
729
        _q_matchParentheses();
    }
}

mae's avatar
mae committed
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752

void BaseTextEditor::gotoLineStart()
{
    handleHomeKey(false);
}

void BaseTextEditor::gotoLineStartWithSelection()
{
    handleHomeKey(true);
}

void BaseTextEditor::gotoLineEnd()
{
    moveCursor(QTextCursor::EndOfLine);
}

void BaseTextEditor::gotoLineEndWithSelection()
{
    moveCursor(QTextCursor::EndOfLine, QTextCursor::KeepAnchor);
}

void BaseTextEditor::gotoNextLine()
{
753
    moveCursor(QTextCursor::Down);
mae's avatar
mae committed
754
755
756
757
}

void BaseTextEditor::gotoNextLineWithSelection()
{
758
    moveCursor(QTextCursor::Down, QTextCursor::KeepAnchor);
mae's avatar
mae committed
759
760
761
762
}

void BaseTextEditor::gotoPreviousLine()
{
763
    moveCursor(QTextCursor::Up);
mae's avatar
mae committed
764
765
766
767
}

void BaseTextEditor::gotoPreviousLineWithSelection()
{
768
    moveCursor(QTextCursor::Up, QTextCursor::KeepAnchor);
mae's avatar
mae committed
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
}

void BaseTextEditor::gotoPreviousCharacter()
{
    moveCursor(QTextCursor::PreviousCharacter);
}

void BaseTextEditor::gotoPreviousCharacterWithSelection()
{
    moveCursor(QTextCursor::PreviousCharacter, QTextCursor::KeepAnchor);
}

void BaseTextEditor::gotoNextCharacter()
{
    moveCursor(QTextCursor::NextCharacter);
}

void BaseTextEditor::gotoNextCharacterWithSelection()
{
    moveCursor(QTextCursor::NextCharacter, QTextCursor::KeepAnchor);
}

void BaseTextEditor::gotoPreviousWord()
{
    moveCursor(QTextCursor::PreviousWord);
}

void BaseTextEditor::gotoPreviousWordWithSelection()
{
    moveCursor(QTextCursor::PreviousWord, QTextCursor::KeepAnchor);
}

void BaseTextEditor::gotoNextWord()
{
    moveCursor(QTextCursor::NextWord);
}

void BaseTextEditor::gotoNextWordWithSelection()
{
    moveCursor(QTextCursor::NextWord, QTextCursor::KeepAnchor);
}



813
814
static QTextCursor flippedCursor(const QTextCursor &cursor)
{
815
816
817
818
    QTextCursor flipped = cursor;
    flipped.clearSelection();
    flipped.setPosition(cursor.anchor(), QTextCursor::KeepAnchor);
    return flipped;
819
820
}

821
822
823
824
825
826
827
828
829
830
831
832
833
void BaseTextEditor::selectBlockUp()
{
    QTextCursor cursor = textCursor();
    if (!cursor.hasSelection())
        d->m_selectBlockAnchor = cursor;
    else
        cursor.setPosition(cursor.selectionStart());


    if (!TextBlockUserData::findPreviousOpenParenthesis(&cursor, false))
        return;
    if (!TextBlockUserData::findNextClosingParenthesis(&cursor, true))
        return;
834
835
    setTextCursor(flippedCursor(cursor));
    _q_matchParentheses();
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
}

void BaseTextEditor::selectBlockDown()
{
    QTextCursor tc = textCursor();
    QTextCursor cursor = d->m_selectBlockAnchor;

    if (!tc.hasSelection() || cursor.isNull())
        return;
    tc.setPosition(tc.selectionStart());

    forever {
        QTextCursor ahead = cursor;
        if (!TextBlockUserData::findPreviousOpenParenthesis(&ahead, false))
            break;
        if (ahead.position() <= tc.position())
            break;
        cursor = ahead;
    }
    if ( cursor != d->m_selectBlockAnchor)
        TextBlockUserData::findNextClosingParenthesis(&cursor, true);

858
859
    setTextCursor(flippedCursor(cursor));
    _q_matchParentheses();
860
861
}

862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
void BaseTextEditor::copyLineUp()
{
    copyLineUpDown(true);
}

void BaseTextEditor::copyLineDown()
{
    copyLineUpDown(false);
}

void BaseTextEditor::copyLineUpDown(bool up)
{
    QTextCursor cursor = textCursor();
    QTextCursor move = cursor;
    move.beginEditBlock();

    bool hasSelection = cursor.hasSelection();

    if (hasSelection) {
        move.setPosition(cursor.selectionStart());
        move.movePosition(QTextCursor::StartOfBlock);
        move.setPosition(cursor.selectionEnd(), QTextCursor::KeepAnchor);
        move.movePosition(QTextCursor::EndOfBlock, QTextCursor::KeepAnchor);
    } else {
        move.movePosition(QTextCursor::StartOfBlock);
        move.movePosition(QTextCursor::EndOfBlock, QTextCursor::KeepAnchor);
    }

    QString text = move.selectedText();

    if (up) {
        move.setPosition(cursor.selectionStart());
        move.movePosition(QTextCursor::StartOfBlock);
        move.insertBlock();
        move.movePosition(QTextCursor::Left);
    } else {
        move.movePosition(QTextCursor::EndOfBlock);
        if (move.atBlockStart()) {
            move.movePosition(QTextCursor::NextBlock);
            move.insertBlock();
            move.movePosition(QTextCursor::Left);
        } else {
            move.insertBlock();
        }
    }

    int start = move.position();
    move.clearSelection();
    move.insertText(text);
    int end = move.position();

    move.setPosition(start);
    move.setPosition(end, QTextCursor::KeepAnchor);

    indent(document(), move, QChar::Null);
    move.endEditBlock();

    setTextCursor(move);
}

922
void BaseTextEditor::joinLines()
923
{
924
925
926
    QTextCursor cursor = textCursor();
    QTextCursor start = cursor;
    QTextCursor end = cursor;
927

928
929
    start.setPosition(cursor.selectionStart());
    end.setPosition(cursor.selectionEnd() - 1);
930

931
    int lineCount = qMax(1, end.blockNumber() - start.blockNumber());
932

933
934
935
936
937
938
939
    cursor.beginEditBlock();
    cursor.setPosition(cursor.selectionStart());
    while (lineCount--) {
        cursor.movePosition(QTextCursor::NextBlock);
        cursor.movePosition(QTextCursor::StartOfBlock);
        cursor.movePosition(QTextCursor::EndOfBlock, QTextCursor::KeepAnchor);
        QString cutLine = cursor.selectedText();
940

941
942
943
944
945
946
947
948
949
950
951
952
953
        // Collapse leading whitespaces to one or insert whitespace
        cutLine.replace(QRegExp("^\\s*"), " ");
        cursor.movePosition(QTextCursor::Right, QTextCursor::KeepAnchor);
        cursor.removeSelectedText();

        cursor.movePosition(QTextCursor::PreviousBlock);
        cursor.movePosition(QTextCursor::EndOfBlock);

        cursor.insertText(cutLine);
    }
    cursor.endEditBlock();

    setTextCursor(cursor);
954
955
}

956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
void BaseTextEditor::insertLineAbove()
{
    QTextCursor cursor = textCursor();
    cursor.beginEditBlock();
    cursor.movePosition(QTextCursor::PreviousBlock, QTextCursor::MoveAnchor);
    cursor.movePosition(QTextCursor::EndOfBlock, QTextCursor::MoveAnchor);
    cursor.insertBlock();
    indent(document(), cursor, QChar::Null);
    cursor.endEditBlock();
    setTextCursor(cursor);
}

void BaseTextEditor::insertLineBelow()
{
    QTextCursor cursor = textCursor();
    cursor.beginEditBlock();
    cursor.movePosition(QTextCursor::EndOfBlock, QTextCursor::MoveAnchor);
    cursor.insertBlock();
    indent(document(), cursor, QChar::Null);
    cursor.endEditBlock();
    setTextCursor(cursor);
}

979
980
981
982
983
984
985
986
987
988
989
990
991
992
void BaseTextEditor::moveLineUp()
{
    moveLineUpDown(true);
}

void BaseTextEditor::moveLineDown()
{
    moveLineUpDown(false);
}

void BaseTextEditor::moveLineUpDown(bool up)
{
    QTextCursor cursor = textCursor();
    QTextCursor move = cursor;
993

mae's avatar
mae committed
994
    move.setVisualNavigation(false); // this opens folded items instead of destroying them
995

996
997
998
999
    if (d->m_moveLineUndoHack)
        move.joinPreviousEditBlock();
    else
        move.beginEditBlock();
1000
1001
1002
1003
1004
1005
1006

    bool hasSelection = cursor.hasSelection();

    if (cursor.hasSelection()) {
        move.setPosition(cursor.selectionStart());
        move.movePosition(QTextCursor::StartOfBlock);
        move.setPosition(cursor.selectionEnd(), QTextCursor::KeepAnchor);
1007
        move.movePosition(move.atBlockStart() ? QTextCursor::Left: QTextCursor::EndOfBlock, QTextCursor::KeepAnchor);
1008
1009
1010
1011
1012
    } else {
        move.movePosition(QTextCursor::StartOfBlock);
        move.movePosition(QTextCursor::EndOfBlock, QTextCursor::KeepAnchor);
    }
    QString text = move.selectedText();
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029

    RefactorMarkers affectedMarkers;
    RefactorMarkers nonAffectedMarkers;
    QList<int> markerOffsets;

    foreach (const RefactorMarker &marker, d->m_refactorOverlay->markers()) {
        //test if marker is part of the selection to be moved
        if ((move.selectionStart() <= marker.cursor.position()) && (move.selectionEnd() >= marker.cursor.position())) {
            affectedMarkers.append(marker);
            //remember the offset of markers in text
            int offset = marker.cursor.position() - move.selectionStart();
            markerOffsets.append(offset);
        } else {
            nonAffectedMarkers.append(marker);
        }
    }

1030
1031
    move.movePosition(QTextCursor::Right, QTextCursor::KeepAnchor);
    move.removeSelectedText();
1032

1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
    if (up) {
        move.movePosition(QTextCursor::PreviousBlock);
        move.insertBlock();
        move.movePosition(QTextCursor::Left);
    } else {
        move.movePosition(QTextCursor::EndOfBlock);
        if (move.atBlockStart()) { // empty block
            move.movePosition(QTextCursor::NextBlock);
            move.insertBlock();
            move.movePosition(QTextCursor::Left);
        } else {
            move.insertBlock();
        }
    }
1047

1048
1049
1050
1051
    int start = move.position();
    move.clearSelection();
    move.insertText(text);
    int end = move.position();
1052

1053
1054
1055
1056
1057
    if (hasSelection) {
        move.setPosition(start);
        move.setPosition(end, QTextCursor::KeepAnchor);
    }

1058
1059
1060
1061
1062
1063
1064
    //update positions of affectedMarkers
    for (int i=0;i < affectedMarkers.count(); i++) {
        int newPosition = start + markerOffsets.at(i);
        affectedMarkers[i].cursor.setPosition(newPosition);
    }
    d->m_refactorOverlay->setMarkers(nonAffectedMarkers + affectedMarkers);

mae's avatar
mae committed
1065
    reindent(document(), move);
1066
1067
    move.endEditBlock();

1068
    setTextCursor(move);
1069
    d->m_moveLineUndoHack = true;
1070
}
1071

1072
1073
void BaseTextEditor::cleanWhitespace()
{
1074
    d->m_document->cleanWhitespace(textCursor());
1075
}
1076

con's avatar
con committed
1077
1078
void BaseTextEditor::keyPressEvent(QKeyEvent *e)
{
1079
    viewport()->setCursor(Qt::BlankCursor);
1080
    ToolTip::instance()->hide();
1081

1082
    d->m_moveLineUndoHack = false;
mae's avatar
mae committed
1083
    d->clearVisibleFoldedBlock();
con's avatar
con committed
1084
1085

    if (e->key() == Qt::Key_Escape) {
1086
1087
1088
1089
1090
1091
1092
1093
1094
        if (d->m_snippetOverlay->isVisible()) {
            e->accept();
            d->m_snippetOverlay->hide();
            d->m_snippetOverlay->clear();
            QTextCursor cursor = textCursor();
            cursor.clearSelection();
            setTextCursor(cursor);
            return;
        }
con's avatar
con committed
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
    }

    bool ro = isReadOnly();

    if (d->m_inBlockSelectionMode) {
        if (e == QKeySequence::Cut) {
            if (!ro) {
                cut();
                e->accept();
                return;
            }
1106
        } else if (e == QKeySequence::Delete || e->key() == Qt::Key_Backspace) {
con's avatar
con committed
1107
1108
1109
1110
1111
            if (!ro) {
                d->removeBlockSelection();
                e->accept();
                return;
            }
1112
1113
1114
1115
1116
        } else if (e == QKeySequence::Paste) {
            if (!ro) {
                d->removeBlockSelection();
                // continue
            }
con's avatar
con committed
1117
1118
1119
1120
1121
1122
1123
1124
1125
        }
    }


    if (!ro
        && (e == QKeySequence::InsertParagraphSeparator
            || (!d->m_lineSeparatorsAllowed && e == QKeySequence::InsertLineSeparator))
        ) {

1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
        if (d->m_snippetOverlay->isVisible()) {
            e->accept();
            d->m_snippetOverlay->hide();
            d->m_snippetOverlay->clear();
            QTextCursor cursor = textCursor();
            cursor.movePosition(QTextCursor::EndOfBlock);
            setTextCursor(cursor);
            return;
        }


con's avatar
con committed
1137
1138
1139
        QTextCursor cursor = textCursor();
        if (d->m_inBlockSelectionMode)
            cursor.clearSelection();
1140
        const TabSettings &ts = d->m_document->tabSettings();
mae's avatar
mae committed
1141
1142
        cursor.beginEditBlock();

1143
        int extraBlocks = paragraphSeparatorAboutToBeInserted(cursor); // virtual
mae's avatar
mae committed
1144

1145
        if (ts.m_autoIndent) {
1146
            cursor.insertBlock();
con's avatar
con committed
1147
            indent(document(), cursor, QChar::Null);
1148
1149
        } else {
            cursor.insertBlock();
1150
1151
1152

            // After inserting the block, to avoid duplicating whitespace on the same line
            const QString previousBlockText = cursor.block().previous().text();
1153
            cursor.insertText(ts.indentationString(previousBlockText));
con's avatar
con committed
1154
        }
mae's avatar
mae committed
1155
        cursor.endEditBlock();
con's avatar
con committed
1156
        e->accept();
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166

        if (extraBlocks > 0) {
            QTextCursor ensureVisible = cursor;
            while (extraBlocks > 0) {
                --extraBlocks;
                ensureVisible.movePosition(QTextCursor::NextBlock);
            }
            setTextCursor(ensureVisible);
        }

con's avatar
con committed
1167
1168
        setTextCursor(cursor);
        return;
1169
1170
1171
    } else if (!ro
               && (e == QKeySequence::MoveToStartOfBlock
                   || e == QKeySequence::SelectStartOfBlock)){
mae's avatar
mae committed
1172
1173
1174
1175
        if ((e->modifiers() & (Qt::AltModifier | Qt::ShiftModifier)) == (Qt::AltModifier | Qt::ShiftModifier)) {
            e->accept();
            return;
        }
1176
1177
1178
1179
1180
1181
        handleHomeKey(e == QKeySequence::SelectStartOfBlock);
        e->accept();
        return;
    } else if (!ro
               && (e == QKeySequence::MoveToStartOfLine
                   || e == QKeySequence::SelectStartOfLine)){
mae's avatar
mae committed
1182
1183
1184
1185
        if ((e->modifiers() & (Qt::AltModifier | Qt::ShiftModifier)) == (Qt::AltModifier | Qt::ShiftModifier)) {
                e->accept();
                return;
        }
1186
1187
1188
1189
1190
1191
1192
1193
        QTextCursor cursor = textCursor();
        if (QTextLayout *layout = cursor.block().layout()) {
            if (layout->lineForTextPosition(cursor.position() - cursor.block().position()).lineNumber() == 0) {
                handleHomeKey(e == QKeySequence::SelectStartOfLine);
                e->accept();
                return;
            }
        }
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
    } else if (!ro
               && e == QKeySequence::DeleteStartOfWord
               && d->m_document->tabSettings().m_autoIndent
               && !textCursor().hasSelection()){
        e->accept();
        QTextCursor c = textCursor();
        int pos = c.position();
        c.movePosition(QTextCursor::PreviousWord);
        int targetpos = c.position();
        forever {
            handleBackspaceKey();
            int cpos = textCursor().position();
            if (cpos == pos || cpos <= targetpos)
                break;
            pos = cpos;
        }
        return;
con's avatar
con committed
1211
1212
1213
1214
    } else switch (e->key()) {


#if 0
1215
1216
1217
1218
    case Qt::Key_Dollar: {
            d->m_overlay->setVisible(!d->m_overlay->isVisible());
            d->m_overlay->setCursor(textCursor());
            e->accept();
con's avatar
con committed
1219
1220
1221
1222
1223
        return;

    } break;
#endif
    case Qt::Key_Tab:
Joel Nordell's avatar
Joel Nordell committed
1224
    case Qt::Key_Backtab: {
con's avatar
con committed
1225
        if (ro) break;
1226
1227
1228
1229
1230
        if (d->m_snippetOverlay->isVisible() && !d->m_snippetOverlay->isEmpty()) {
            d->snippetTabOrBacktab(e->key() == Qt::Key_Tab);
            e->accept();
            return;
        }
Joel Nordell's avatar
Joel Nordell committed
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
        QTextCursor cursor = textCursor();
        int newPosition;
        if (d->m_document->tabSettings().tabShouldIndent(document(), cursor, &newPosition)) {
            if (newPosition != cursor.position() && !cursor.hasSelection()) {
                cursor.setPosition(newPosition);
                setTextCursor(cursor);
            }
            indent(document(), cursor, QChar::Null);
        } else {
            indentOrUnindent(e->key() == Qt::Key_Tab);
        }
con's avatar
con committed
1242
1243
        e->accept();
        return;
Joel Nordell's avatar
Joel Nordell committed
1244
    } break;
con's avatar
con committed
1245
1246
    case Qt::Key_Backspace:
        if (ro) break;
1247
        if ((e->modifiers() & (Qt::ControlModifier
con's avatar
con committed
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
                               | Qt::ShiftModifier
                               | Qt::AltModifier
                               | Qt::MetaModifier)) == Qt::NoModifier
            && !textCursor().hasSelection()) {
            handleBackspaceKey();
            e->accept();
            return;
        }
        break;
    case Qt::Key_Up:
    case Qt::Key_Down:
        if (e->modifiers() & Qt::ControlModifier) {
            verticalScrollBar()->triggerAction(
                    e->key() == Qt::Key_Up ? QAbstractSlider::SliderSingleStepSub :
                                             QAbstractSlider::SliderSingleStepAdd);
            e->accept();
            return;
        }
        // fall through
    case Qt::Key_Right:
    case Qt::Key_Left:
Oswald Buddenhagen's avatar
Oswald Buddenhagen committed
1269
#ifndef Q_WS_MAC
con's avatar
con committed
1270
        if ((e->modifiers() & (Qt::AltModifier | Qt::ShiftModifier)) == (Qt::AltModifier | Qt::ShiftModifier)) {
mae's avatar
mae committed
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
            int diff_row = 0;
            int diff_col = 0;
            if (e->key() == Qt::Key_Up)
                diff_row = -1;
            else if (e->key() == Qt::Key_Down)
                diff_row = 1;
            else if (e->key() == Qt::Key_Left)
                diff_col = -1;
            else if (e->key() == Qt::Key_Right)
                diff_col = 1;
            handleBlockSelection(diff_row, diff_col);
            e->accept();
            return;
mae's avatar
mae committed
1284
1285
1286
1287
1288
1289
1290
        } else {
            // leave block selection mode
            if (d->m_inBlockSelectionMode) {
                d->m_inBlockSelectionMode = false;
                d->m_blockSelection.clear();
                viewport()->update();
            }
con's avatar
con committed
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
        }
#endif
        break;
    case Qt::Key_PageUp:
    case Qt::Key_PageDown:
        if (e->modifiers() == Qt::ControlModifier) {
            verticalScrollBar()->triggerAction(
                    e->key() == Qt::Key_PageUp ? QAbstractSlider::SliderPageStepSub :
                                                 QAbstractSlider::SliderPageStepAdd);
            e->accept();
            return;
        }
        break;

    default:
        break;
    }

    if (d->m_inBlockSelectionMode) {
        QString text = e->text();
        if (!text.isEmpty() && (text.at(0).isPrint() || text.at(0) == QLatin1Char('\t'))) {
            d->removeBlockSelection(text);
            goto skip_event;
        }
    }

mae's avatar
mae committed
1317
1318
1319
1320
1321
1322
1323
    if (e->key() == Qt::Key_H && e->modifiers() ==
#ifdef Q_OS_DARWIN
        Qt::MetaModifier
#else
        Qt::ControlModifier
#endif
        ) {
1324
1325
1326
1327
1328
        universalHelper();
        e->accept();
        return;
    }

1329
1330
    if (d->m_snippetOverlay->isVisible()
        && (e->key() == Qt::Key_Delete || e->key() == Qt::Key_Backspace)) {
1331
        d->snippetCheckCursor(textCursor());
1332
    }
1333

mae's avatar
mae committed
1334
1335
    if (ro || e->text().isEmpty() || !e->text().at(0).isPrint()) {
        QPlainTextEdit::keyPressEvent(e);
mae's avatar
mae committed
1336
    } else if ((e->modifiers() & (Qt::ControlModifier|Qt::AltModifier)) != Qt::ControlModifier){
mae's avatar
mae committed
1337
1338
        QTextCursor cursor = textCursor();
        QString text = e->text();
1339
        QString autoText = autoComplete(cursor, text);
1340

mae's avatar
mae committed
1341
1342
        QChar electricChar;
        if (d->m_document->tabSettings().m_autoIndent) {
1343
            foreach (QChar c, text) {
mae's avatar
mae committed
1344
1345
1346
1347
1348
1349
                if (isElectricCharacter(c)) {
                    electricChar = c;
                    break;
                }
            }
        }
1350

1351
1352
1353
        if (d->m_snippetOverlay->isVisible())
            d->snippetCheckCursor(cursor);

1354
1355
        bool doEditBlock = !(electricChar.isNull() && autoText.isEmpty());
        if (doEditBlock)
mae's avatar
mae committed
1356
            cursor.beginEditBlock();
1357

mae's avatar
mae committed
1358
        cursor.insertText(text);
1359

1360
        if (!autoText.isEmpty()) {
mae's avatar
mae committed
1361
1362
1363
1364
            int pos = cursor.position();
            cursor.insertText(autoText);
            cursor.setPosition(pos);
        }
1365
        if (!electricChar.isNull() && contextAllowsElectricCharacters(cursor))
mae's avatar
mae committed
1366
            indent(document(), cursor, electricChar);
1367
1368

        if (doEditBlock)
mae's avatar
mae committed
1369
            cursor.endEditBlock();
1370

mae's avatar
mae committed
1371
1372
        setTextCursor(cursor);
    }
con's avatar
con committed
1373

1374
    skip_event:
con's avatar
con committed
1375
    if (!ro && e->key() == Qt::Key_Delete && d->m_parenthesesMatchingEnabled)
1376
1377
        d->m_parenthesesMatchingTimer->start(50);

con's avatar
con committed
1378

1379
1380
1381
    if (!ro && d->m_contentsChanged && !e->text().isEmpty() && e->text().at(0).isPrint()) {
        maybeRequestAutoCompletion(e->text().at(0));
    }
con's avatar
con committed
1382
1383
1384

}

1385
1386
1387
1388
void BaseTextEditor::maybeRequestAutoCompletion(const QChar &ch)
{
    if (ch.isLetterOrNumber() || ch == QLatin1Char('_')) {
        d->m_requestAutoCompletionRevision = document()->revision();
1389
        d->m_requestAutoCompletionPosition = position();
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
        d->m_requestAutoCompletionTimer->start();
    } else {
        d->m_requestAutoCompletionTimer->stop();
        emit requestAutoCompletion(editableInterface(), false);
    }
}

void BaseTextEditor::_q_requestAutoCompletion()
{
    d->m_requestAutoCompletionTimer->stop();

1401
1402
1403
    if (CompletionSupport::instance()->isActive())
        return;

1404
1405
    if (d->m_requestAutoCompletionRevision == document()->revision() &&
            d->m_requestAutoCompletionPosition == position())
1406
1407
1408
        emit requestAutoCompletion(editableInterface(), false);
}

mae's avatar
mae committed
1409
void BaseTextEditor::insertCodeSnippet(const QTextCursor &cursor_arg, const QString &snippet)
1410
{
1411
1412
1413
1414
1415
    if ((snippet.count('$') % 2) != 0) {
        qWarning() << "invalid snippet";
        return;
    }

mae's avatar
mae committed
1416
1417
1418
1419
1420
1421
1422
    QList<QTextEdit::ExtraSelection> selections;

    QTextCursor cursor = cursor_arg;
    cursor.beginEditBlock();
    cursor.removeSelectedText();
    const int startCursorPosition = cursor.position();

1423
    int pos = 0;
mae's avatar
mae committed
1424
1425
    QMap<int, int> positions;

1426
    while (pos < snippet.size()) {
1427
        if (snippet.at(pos) != QChar::ObjectReplacementCharacter) {
1428
1429
            const int start = pos;
            do { ++pos; }
1430
            while (pos < snippet.size() && snippet.at(pos) != QChar::ObjectReplacementCharacter);
1431
1432
1433
1434
1435
            cursor.insertText(snippet.mid(start, pos - start));
        } else {
            // the start of a place holder.
            const int start = ++pos;
            for (; pos < snippet.size(); ++pos) {
1436
                if (snippet.at(pos) == QChar::ObjectReplacementCharacter)
1437
1438
1439
1440
                    break;
            }

            Q_ASSERT(pos < snippet.size());
1441
            Q_ASSERT(snippet.at(pos) == QChar::ObjectReplacementCharacter);
1442
1443
1444
1445
1446
1447

            const QString textToInsert = snippet.mid(start, pos - start);

            int cursorPosition = cursor.position();
            cursor.insertText(textToInsert);

mae's avatar
mae committed
1448
1449
1450
            if (textToInsert.isEmpty()) {
                positions.insert(cursorPosition, 0);
            } else {
1451
                positions.insert(cursorPosition, textToInsert.length());
mae's avatar
mae committed
1452
            }
1453
1454
1455
1456
1457

            ++pos;
        }
    }

mae's avatar
mae committed
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
    QMapIterator<int,int> it(positions);
    while (it.hasNext()) {
        it.next();
        int length = it.value();
        int position = it.key();

        QTextCursor tc(document());
        tc.setPosition(position);
        tc.setPosition(position + length, QTextCursor::KeepAnchor);
        QTextEdit::ExtraSelection selection;
        selection.cursor = tc;
mae's avatar
mae committed
1469
        selection.format = (length ? d->m_occurrencesFormat : d->m_occurrenceRenameFormat);
mae's avatar
mae committed
1470
1471
1472
        selections.append(selection);
    }

1473
1474
    cursor.setPosition(startCursorPosition, QTextCursor::KeepAnchor);
    indent(cursor.document(), cursor, QChar());
mae's avatar
mae committed
1475
    cursor.endEditBlock();
1476

1477
    setExtraSelections(BaseTextEditor::SnippetPlaceholderSelection, selections);
1478
1479
1480
1481
1482

    if (! selections.isEmpty()) {
        const QTextEdit::ExtraSelection &selection = selections.first();

        cursor = textCursor();
mae's avatar