basetexteditor.cpp 201 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"
45
#include "indenter.h"
46
#include "autocompleter.h"
47
#include "snippet.h"
con's avatar
con committed
48

49
#include <aggregation/aggregate.h>
50
#include <coreplugin/actionmanager/actionmanager.h>
51 52
#include <coreplugin/actionmanager/actioncontainer.h>
#include <coreplugin/actionmanager/command.h>
con's avatar
con committed
53 54
#include <coreplugin/coreconstants.h>
#include <coreplugin/editormanager/editormanager.h>
55
#include <coreplugin/icore.h>
56
#include <coreplugin/manhattanstyle.h>
57
#include <coreplugin/uniqueidmanager.h>
58
#include <extensionsystem/pluginmanager.h>
con's avatar
con committed
59 60
#include <find/basetextfind.h>
#include <utils/linecolumnlabel.h>
hjk's avatar
hjk committed
61
#include <utils/qtcassert.h>
62
#include <utils/stylehelper.h>
con's avatar
con committed
63 64 65 66 67 68

#include <QtCore/QCoreApplication>
#include <QtCore/QTextCodec>
#include <QtCore/QFile>
#include <QtCore/QDebug>
#include <QtCore/QTimer>
69
#include <QtCore/QTimeLine>
70
#include <QtCore/QTime>
con's avatar
con committed
71 72 73 74 75 76 77 78 79 80 81 82 83
#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>
84
#include <QtGui/QTextDocumentFragment>
con's avatar
con committed
85 86 87 88
#include <QtGui/QTextBlock>
#include <QtGui/QTextLayout>
#include <QtGui/QToolBar>
#include <QtGui/QInputDialog>
89
#include <QtGui/QMenu>
con's avatar
con committed
90

91 92
//#define DO_FOO

con's avatar
con committed
93 94 95 96
using namespace TextEditor;
using namespace TextEditor::Internal;

namespace TextEditor {
97
namespace Internal {
con's avatar
con committed
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

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);
    }
};

133 134
} // namespace Internal
} // namespace TextEditor
con's avatar
con committed
135

136 137 138 139
ITextEditor *BaseTextEditor::openEditorAt(const QString &fileName, int line, int column,
                                 const QString &editorKind,
                                 Core::EditorManager::OpenEditorFlags flags,
                                 bool *newEditor)
con's avatar
con committed
140
{
141
    Core::EditorManager *editorManager = Core::EditorManager::instance();
142
    editorManager->cutForwardNavigationHistory();
143
    editorManager->addCurrentPositionToNavigationHistory();
144
    Core::IEditor *editor = editorManager->openEditor(fileName, editorKind,
145
            flags, newEditor);
con's avatar
con committed
146 147 148 149 150
    TextEditor::ITextEditor *texteditor = qobject_cast<TextEditor::ITextEditor *>(editor);
    if (texteditor) {
        texteditor->gotoLine(line, column);
        return texteditor;
    }
151

con's avatar
con committed
152 153 154
    return 0;
}

155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176
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
177 178 179
BaseTextEditor::BaseTextEditor(QWidget *parent)
    : QPlainTextEdit(parent)
{
180
    d = new BaseTextEditorPrivate;
con's avatar
con committed
181 182 183 184 185
    d->q = this;
    d->m_extraArea = new TextEditExtraArea(this);
    d->m_extraArea->setMouseTracking(true);
    setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);

186
    d->m_overlay = new TextEditorOverlay(this);
187
    d->m_snippetOverlay = new TextEditorOverlay(this);
188
    d->m_searchResultOverlay = new TextEditorOverlay(this);
189
    d->m_refactorOverlay = new RefactorOverlay(this);
190

con's avatar
con committed
191 192 193 194 195 196 197 198 199 200
    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
201
        = d->extraAreaHighlightFoldedBlockNumber
con's avatar
con committed
202 203
        = -1;

mae's avatar
mae committed
204
    d->visibleFoldedBlockNumber = d->suggestedVisibleFoldedBlockNumber = -1;
con's avatar
con committed
205 206 207 208 209 210 211 212 213 214 215

    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()));

216 217 218 219
#ifdef DO_FOO
    (void) new QShortcut(tr("CTRL+D"), this, SLOT(doFoo()));
#endif

con's avatar
con committed
220 221 222 223 224 225 226 227 228 229

    // 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()));

230 231 232 233
    d->m_highlightBlocksTimer = new QTimer(this);
    d->m_highlightBlocksTimer->setSingleShot(true);
    connect(d->m_highlightBlocksTimer, SIGNAL(timeout()), this, SLOT(_q_highlightBlocks()));

234 235 236 237 238
    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()));

239
    d->m_animator = 0;
con's avatar
con committed
240 241 242 243

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

    slotUpdateExtraAreaWidth();
con's avatar
con committed
244
    updateHighlights();
con's avatar
con committed
245 246
    setFrameStyle(QFrame::NoFrame);

247 248 249 250
    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
251 252
    connect(Core::EditorManager::instance(), SIGNAL(currentEditorChanged(Core::IEditor*)),
            this, SLOT(currentEditorChanged(Core::IEditor*)));
mae's avatar
mae committed
253 254

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

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
286
static int foldBoxWidth(const QFontMetrics &fm)
287 288 289 290 291
{
    const int lineSpacing = fm.lineSpacing();
    return lineSpacing + lineSpacing%2 + 1;
}

con's avatar
con committed
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
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;
}


465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481
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
482 483 484 485 486 487

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

488
BaseTextEditorEditable *BaseTextEditor::editableInterface() const
con's avatar
con committed
489 490 491 492 493 494 495 496 497 498 499 500 501 502
{
    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)
{
503
    if (editor == editableInterface()) {
con's avatar
con committed
504 505
        if (d->m_document->hasDecodingError()) {
            Core::EditorManager::instance()->showEditorInfoBar(QLatin1String(Constants::SELECT_ENCODING),
506 507
                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
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
                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
542 543 544 545 546
void BaseTextEditor::triggerQuickFix()
{
    emit requestQuickFix(editableInterface());
}

547 548 549 550 551 552
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
553 554
bool BaseTextEditor::createNew(const QString &contents)
{
555 556 557 558 559
    if (contents.size() > Core::EditorManager::maxTextFileSize()) {
        setPlainText(msgTextTooLarge(contents.size()));
        document()->setModified(false);
        return false;
    }
con's avatar
con committed
560 561 562 563 564 565 566 567 568 569 570 571 572 573 574
    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;
}

575 576 577
/*
  Collapses the first comment in a file, if there is only whitespace above
  */
mae's avatar
mae committed
578
void BaseTextEditorPrivate::foldLicenseHeader()
579 580
{
    QTextDocument *doc = q->document();
581
    BaseTextDocumentLayout *documentLayout = qobject_cast<BaseTextDocumentLayout*>(doc->documentLayout());
582 583 584
    QTC_ASSERT(documentLayout, return);
    QTextBlock block = doc->firstBlock();
    const TabSettings &ts = m_document->tabSettings();
585
    while (block.isValid() && block.isVisible()) {
586
        QString text = block.text();
mae's avatar
mae committed
587 588 589 590 591 592 593 594 595
        if (BaseTextDocumentLayout::canFold(block) && block.next().isVisible()) {
            if (text.trimmed().startsWith(QLatin1String("/*"))) {
                BaseTextDocumentLayout::doFoldOrUnfold(block, false);
                moveCursorVisible();
                documentLayout->requestUpdate();
                documentLayout->emitDocumentSizeChanged();
                break;
            }
        }
596 597 598 599 600 601
        if (ts.firstNonSpace(text) < text.size())
            break;
        block = block.next();
    }
}

602 603 604 605 606 607 608
const Utils::ChangeSet &BaseTextEditor::changeSet() const
{
    return d->m_changeSet;
}

void BaseTextEditor::setChangeSet(const Utils::ChangeSet &changeSet)
{
Roberto Raggi's avatar
Roberto Raggi committed
609 610
    using namespace Utils;

611
    d->m_changeSet = changeSet;
Roberto Raggi's avatar
Roberto Raggi committed
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

    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
    }
639 640
}

641
Core::IFile *BaseTextEditor::file()
con's avatar
con committed
642 643 644 645 646 647
{
    return d->m_document;
}

void BaseTextEditor::editorContentsChange(int position, int charsRemoved, int charsAdded)
{
648 649 650
    if (d->m_animator)
        d->m_animator->finish();

con's avatar
con committed
651
    d->m_contentsChanged = true;
652
    QTextDocument *doc = document();
con's avatar
con committed
653 654 655 656 657 658

    // Keep the line numbers and the block information for the text marks updated
    if (charsRemoved != 0) {
        d->updateMarksLineNumber();
        d->updateMarksBlock(document()->findBlock(position));
    } else {
659 660
        const QTextBlock posBlock = doc->findBlock(position);
        const QTextBlock nextBlock = doc->findBlock(position + charsAdded);
con's avatar
con committed
661 662 663 664 665 666 667 668
        if (posBlock != nextBlock) {
            d->updateMarksLineNumber();
            d->updateMarksBlock(posBlock);
            d->updateMarksBlock(nextBlock);
        } else {
            d->updateMarksBlock(posBlock);
        }
    }
669

670 671 672 673 674 675 676 677 678
    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();
        }
    }

679
    if (doc->isRedoAvailable())
680
        emit editableInterface()->contentsChangedBecauseOfUndo();
con's avatar
con committed
681 682 683 684
}

void BaseTextEditor::slotSelectionChanged()
{
mae's avatar
mae committed
685 686 687
    if (d->m_inBlockSelectionMode && !textCursor().hasSelection()) {
        d->m_inBlockSelectionMode = false;
        d->m_blockSelection.clear();
con's avatar
con committed
688
        viewport()->update();
mae's avatar
mae committed
689 690
    }

691 692
    if (!d->m_selectBlockAnchor.isNull() && !textCursor().hasSelection())
        d->m_selectBlockAnchor = QTextCursor();
693 694 695

    // Clear any link which might be showing when the selection changes
    clearLink();
con's avatar
con committed
696 697
}

698 699 700
void BaseTextEditor::gotoBlockStart()
{
    QTextCursor cursor = textCursor();
701
    if (TextBlockUserData::findPreviousOpenParenthesis(&cursor, false)) {
702
        setTextCursor(cursor);
703 704
        _q_matchParentheses();
    }
705 706 707 708 709
}

void BaseTextEditor::gotoBlockEnd()
{
    QTextCursor cursor = textCursor();
710
    if (TextBlockUserData::findNextClosingParenthesis(&cursor, false)) {
711
        setTextCursor(cursor);
712 713
        _q_matchParentheses();
    }
714 715 716 717 718
}

void BaseTextEditor::gotoBlockStartWithSelection()
{
    QTextCursor cursor = textCursor();
719
    if (TextBlockUserData::findPreviousOpenParenthesis(&cursor, true)) {
720
        setTextCursor(cursor);
721 722
        _q_matchParentheses();
    }
723 724 725 726 727
}

void BaseTextEditor::gotoBlockEndWithSelection()
{
    QTextCursor cursor = textCursor();
728
    if (TextBlockUserData::findNextClosingParenthesis(&cursor, true)) {
729
        setTextCursor(cursor);
730 731 732 733
        _q_matchParentheses();
    }
}

mae's avatar
mae committed
734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756

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()
{
757
    moveCursor(QTextCursor::Down);
mae's avatar
mae committed
758 759 760 761
}

void BaseTextEditor::gotoNextLineWithSelection()
{
762
    moveCursor(QTextCursor::Down, QTextCursor::KeepAnchor);
mae's avatar
mae committed
763 764 765 766
}

void BaseTextEditor::gotoPreviousLine()
{
767
    moveCursor(QTextCursor::Up);
mae's avatar
mae committed
768 769 770 771
}

void BaseTextEditor::gotoPreviousLineWithSelection()
{
772
    moveCursor(QTextCursor::Up, QTextCursor::KeepAnchor);
mae's avatar
mae committed
773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814
}

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);
}

mae's avatar
mae committed
815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843
void BaseTextEditor::gotoPreviousWordCamelCase()
{
    QTextCursor c = textCursor();
    camelCaseLeft(c, QTextCursor::MoveAnchor);
    setTextCursor(c);
}

void BaseTextEditor::gotoPreviousWordCamelCaseWithSelection()
{
    QTextCursor c = textCursor();
    camelCaseLeft(c, QTextCursor::KeepAnchor);
    setTextCursor(c);
}

void BaseTextEditor::gotoNextWordCamelCase()
{
    qDebug() << Q_FUNC_INFO;
    QTextCursor c = textCursor();
    camelCaseRight(c, QTextCursor::MoveAnchor);
    setTextCursor(c);
}

void BaseTextEditor::gotoNextWordCamelCaseWithSelection()
{
    QTextCursor c = textCursor();
    camelCaseRight(c, QTextCursor::KeepAnchor);
    setTextCursor(c);
}

mae's avatar
mae committed
844 845


846 847
static QTextCursor flippedCursor(const QTextCursor &cursor)
{
848 849 850 851
    QTextCursor flipped = cursor;
    flipped.clearSelection();
    flipped.setPosition(cursor.anchor(), QTextCursor::KeepAnchor);
    return flipped;
852 853
}

854 855 856 857 858 859 860 861 862 863 864 865 866
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;
867 868
    setTextCursor(flippedCursor(cursor));
    _q_matchParentheses();
869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890
}

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);

891 892
    setTextCursor(flippedCursor(cursor));
    _q_matchParentheses();
893 894
}

895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954
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);
}

955
void BaseTextEditor::joinLines()
956
{
957 958 959
    QTextCursor cursor = textCursor();
    QTextCursor start = cursor;
    QTextCursor end = cursor;
960

961 962
    start.setPosition(cursor.selectionStart());
    end.setPosition(cursor.selectionEnd() - 1);
963

964
    int lineCount = qMax(1, end.blockNumber() - start.blockNumber());
965

966 967 968 969 970 971 972
    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();
973

974 975 976 977 978 979 980 981 982 983 984 985 986
        // 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);
987 988
}

989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011
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);
}

1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025
void BaseTextEditor::moveLineUp()
{
    moveLineUpDown(true);
}

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

void BaseTextEditor::moveLineUpDown(bool up)
{
    QTextCursor cursor = textCursor();
    QTextCursor move = cursor;
1026

mae's avatar
mae committed
1027
    move.setVisualNavigation(false); // this opens folded items instead of destroying them
1028

1029 1030 1031 1032
    if (d->m_moveLineUndoHack)
        move.joinPreviousEditBlock();
    else
        move.beginEditBlock();
1033 1034 1035 1036 1037 1038 1039

    bool hasSelection = cursor.hasSelection();

    if (cursor.hasSelection()) {
        move.setPosition(cursor.selectionStart());
        move.movePosition(QTextCursor::StartOfBlock);
        move.setPosition(cursor.selectionEnd(), QTextCursor::KeepAnchor);
1040
        move.movePosition(move.atBlockStart() ? QTextCursor::Left: QTextCursor::EndOfBlock, QTextCursor::KeepAnchor);
1041 1042 1043 1044 1045
    } else {
        move.movePosition(QTextCursor::StartOfBlock);
        move.movePosition(QTextCursor::EndOfBlock, QTextCursor::KeepAnchor);
    }
    QString text = move.selectedText();
1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062

    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);
        }
    }

1063 1064
    move.movePosition(QTextCursor::Right, QTextCursor::KeepAnchor);
    move.removeSelectedText();
1065

1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079
    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();
        }
    }
1080

1081 1082 1083 1084
    int start = move.position();
    move.clearSelection();
    move.insertText(text);
    int end = move.position();
1085

1086 1087 1088 1089 1090
    if (hasSelection) {
        move.setPosition(start);
        move.setPosition(end, QTextCursor::KeepAnchor);
    }

1091 1092 1093 1094 1095 1096 1097
    //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
1098
    reindent(document(), move);
1099 1100
    move.endEditBlock();

1101
    setTextCursor(move);
1102
    d->m_moveLineUndoHack = true;
1103
}
1104

1105 1106
void BaseTextEditor::cleanWhitespace()
{
1107
    d->m_document->cleanWhitespace(textCursor());
1108
}
1109

1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178

// could go into QTextCursor...
static QTextLine currentTextLine(const QTextCursor &cursor)
{
    const QTextBlock block = cursor.block();
    if (!block.isValid())
        return QTextLine();

    const QTextLayout *layout = block.layout();
    if (!layout)
        return QTextLine();

    const int relativePos = cursor.position() - block.position();
    return layout->lineForTextPosition(relativePos);
}

bool BaseTextEditor::camelCaseLeft(QTextCursor &cursor, QTextCursor::MoveMode mode)
{
    int state = 0;
    enum Input {
        Input_U,
        Input_l,
        Input_underscore,
        Input_space,
        Input_other
    };

    if (!cursor.movePosition(QTextCursor::Left, mode))
        return false;

    forever {
        QChar c = characterAt(cursor.position());
        Input input = Input_other;
        if (c.isUpper())
            input = Input_U;
        else if (c.isLower() || c.isDigit())
            input = Input_l;
        else if (c == QLatin1Char('_'))
            input = Input_underscore;
        else if (c.isSpace() && c != QChar::ParagraphSeparator)
            input = Input_space;
        else
            input = Input_other;

        switch (state) {
        case 0:
            switch (input) {
            case Input_U:
                state = 1;
                break;
            case Input_l:
                state = 2;
                break;
            case Input_underscore:
                state = 3;
                break;
            case Input_space:
                state = 4;
                break;
            default:
                cursor.movePosition(QTextCursor::Right, mode);
                return cursor.movePosition(QTextCursor::WordLeft, mode);
            }
            break;
        case 1:
            switch (input) {
            case Input_U:
                break;
            default:
mae's avatar
mae committed
1179
                cursor.movePosition(QTextCursor::Right, mode);
1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299
                return true;
            }
            break;

        case 2:
            switch (input) {
            case Input_U:
                return true;
            case Input_l:
                break;
            default:
                cursor.movePosition(QTextCursor::Right, mode);
                return true;
            }
            break;
        case 3:
            switch (input) {
            case Input_underscore:
                break;
            case Input_U:
                state = 1;
                break;
            case Input_l:
                state = 2;
                break;
            default:
                cursor.movePosition(QTextCursor::Right, mode);
                return true;
            }
            break;
        case 4:
            switch (input) {
            case Input_space:
                break;
            case Input_U:
                state = 1;
                break;
            case Input_l:
                state = 2;
                break;
            case Input_underscore:
                state = 3;
                break;
            default:
                cursor.movePosition(QTextCursor::Right, mode);
                if (cursor.positionInBlock() == 0)
                    return true;
                return cursor.movePosition(QTextCursor::WordLeft, mode);
            }
        }

        if (!cursor.movePosition(QTextCursor::Left, mode))
            return true;
    }
}

bool BaseTextEditor::camelCaseRight(QTextCursor &cursor, QTextCursor::MoveMode mode)
{
    int state = 0;
    enum Input {
        Input_U,
        Input_l,
        Input_underscore,
        Input_space,
        Input_other
    };

    forever {
        QChar c = characterAt(cursor.position());
        Input input = Input_other;
        if (c.isUpper())
            input = Input_U;
        else if (c.isLower() || c.isDigit())
            input = Input_l;
        else if (c == QLatin1Char('_'))
            input = Input_underscore;
        else if (c.isSpace() && c != QChar::ParagraphSeparator)
            input = Input_space;
        else
            input = Input_other;

        switch (state) {
        case 0:
            switch (input) {
            case Input_U:
                state = 4;
                break;
            case Input_l:
                state = 1;
                break;
            case Input_underscore:
                state = 6;
                break;
            default:
                return cursor.movePosition(QTextCursor::WordRight, mode);
            }
            break;
        case 1:
            switch (input) {
            case Input_U:
                return true;
            case Input_l:
                break;
            case Input_underscore:
                state = 6;
                break;
            case Input_space:
                state = 7;
                break;
            default:
                return true;
            }
            break;
        case 2:
            switch (input) {
            case Input_U:
                break;
            case Input_l:
                cursor.movePosition(QTextCursor::Left, mode);
                return true;
mae's avatar
mae committed
1300 1301 1302
            case Input_underscore:
                state = 6;
                break;
1303 1304 1305 1306
            case Input_space:
                state = 7;
                break;
            default:
mae's avatar
mae committed
1307
                return true;
1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324
            }
            break;
        case 4:
            switch (input) {
            case Input_U:
                state = 2;
                break;
            case Input_l:
                state = 1;
                break;
            case Input_underscore:
                state = 6;
                break;
            case Input_space:
                state = 7;
                break;
            default:
mae's avatar
mae committed
1325
                return true;
1326 1327 1328 1329 1330 1331 1332 1333 1334 1335
            }
            break;
        case 6:
            switch (input) {
            case Input_underscore:
                break;
            case Input_space:
                state = 7;
                break;
            default:
mae's avatar
mae committed
1336
                return true;
1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489
            }
            break;
        case 7:
            switch (input) {
            case Input_space:
                break;
            default:
                return true;
            }
            break;
        }
        cursor.movePosition(QTextCursor::Right, mode);
    }
}

bool BaseTextEditor::cursorMoveKeyEvent(QKeyEvent *e)
{
    QTextCursor cursor = textCursor();

    QTextCursor::MoveMode mode = QTextCursor::MoveAnchor;
    QTextCursor::MoveOperation op = QTextCursor::NoMove;

    if (e == QKeySequence::MoveToNextChar) {
            op = QTextCursor::Right;
    }
    else if (e == QKeySequence::MoveToPreviousChar) {
            op = QTextCursor::Left;
    }
    else if (e == QKeySequence::SelectNextChar) {
           op = QTextCursor::Right;
           mode = QTextCursor::KeepAnchor;
    }
    else if (e == QKeySequence::SelectPreviousChar) {
            op = QTextCursor::Left;
            mode = QTextCursor::KeepAnchor;
    }
    else if (e == QKeySequence::SelectNextWord) {
            op = QTextCursor::WordRight;
            mode = QTextCursor::KeepAnchor;
    }
    else if (e == QKeySequence::SelectPreviousWord) {
            op = QTextCursor::WordLeft;
            mode = QTextCursor::KeepAnchor;
    }
    else if (e == QKeySequence::SelectStartOfLine) {
            op = QTextCursor::StartOfLine;
            mode = QTextCursor::KeepAnchor;
    }
    else if (e == QKeySequence::SelectEndOfLine) {
            op = QTextCursor::EndOfLine;
            mode = QTextCursor::KeepAnchor;
    }
    else if (e == QKeySequence::SelectStartOfBlock) {
            op = QTextCursor::StartOfBlock;
            mode = QTextCursor::KeepAnchor;
    }
    else if (e == QKeySequence::SelectEndOfBlock) {
            op = QTextCursor::EndOfBlock;
            mode = QTextCursor::KeepAnchor;
    }
    else if (e == QKeySequence::SelectStartOfDocument) {
            op = QTextCursor::Start;
            mode = QTextCursor::KeepAnchor;
    }
    else if (e == QKeySequence::SelectEndOfDocument) {
            op = QTextCursor::End;
            mode = QTextCursor::KeepAnchor;
    }
    else if (e == QKeySequence::SelectPreviousLine) {
            op = QTextCursor::Up;
            mode = QTextCursor::KeepAnchor;
    }
    else if (e == QKeySequence::SelectNextLine) {
            op = QTextCursor::Down;
            mode = QTextCursor::KeepAnchor;
            {
                QTextBlock block = cursor.block();
                QTextLine line = currentTextLine(cursor);
                if (!block.next().isValid()
                    && line.isValid()
                    && line.lineNumber() == block.layout()->lineCount() - 1)
                    op = QTextCursor::End;
            }
    }
    else if (e == QKeySequence::MoveToNextWord) {
            op = QTextCursor::WordRight;
    }
    else if (e == QKeySequence::MoveToPreviousWord) {
            op = QTextCursor::WordLeft;
    }
    else if (e == QKeySequence::MoveToEndOfBlock) {
            op = QTextCursor::EndOfBlock;
    }
    else if (e == QKeySequence::MoveToStartOfBlock) {
            op = QTextCursor::StartOfBlock;
    }
    else if (e == QKeySequence::MoveToNextLine) {
            op = QTextCursor::Down;
    }
    else if (e == QKeySequence::MoveToPreviousLine) {
            op = QTextCursor::Up;
    }
    else if (e == QKeySequence::MoveToPreviousLine) {
            op = QTextCursor::Up;
    }
    else if (e == QKeySequence::MoveToStartOfLine) {
            op = QTextCursor::StartOfLine;
    }
    else if (e == QKeySequence::MoveToEndOfLine) {
            op = QTextCursor::EndOfLine;
    }
    else if (e == QKeySequence::MoveToStartOfDocument) {
            op = QTextCursor::Start;
    }
    else if (e == QKeySequence::MoveToEndOfDocument) {
            op = QTextCursor::End;
    }
    else {
        return false;
    }


// Except for pageup and pagedown, Mac OS X has very different behavior, we don't do it all, but
// here's the breakdown:
// Shift still works as an anchor, but only one of the other keys can be down Ctrl (Command),
// Alt (Option), or Meta (Control).
// Command/Control + Left/Right -- Move to left or right of the line
//                 + Up/Down -- Move to top bottom of the file. (Control doesn't move the cursor)
// Option + Left/Right -- Move one word Left/right.
//        + Up/Down  -- Begin/End of Paragraph.
// Home/End Top/Bottom of file. (usually don't move the cursor, but will select)

    bool visualNavigation = cursor.visualNavigation();
    cursor.setVisualNavigation(true);
    bool moved = false;

    if (op == QTextCursor::WordRight) {
        moved = camelCaseRight(cursor, mode);
    } else if (op == QTextCursor::WordLeft) {
            moved = camelCaseLeft(cursor, mode);
    } else {
        moved = cursor.movePosition(op, mode);
    }
    cursor.setVisualNavigation(visualNavigation);

    if (moved) {
        setTextCursor(cursor);
        ensureCursorVisible();
    }
    return true;
}


con's avatar
con committed
1490 1491
void BaseTextEditor::keyPressEvent(QKeyEvent *e)
{
1492
    viewport()->setCursor(Qt::BlankCursor);
1493
    ToolTip::instance()->hide();
1494

1495
    d->m_moveLineUndoHack = false;
mae's avatar
mae committed
1496
    d->clearVisibleFoldedBlock();
con's avatar
con committed
1497 1498

    if (e->key() == Qt::Key_Escape) {
1499 1500 1501 1502 1503 1504 1505 1506 1507
        if (d->m_snippetOverlay->isVisible()) {
            e->accept();
            d->m_snippetOverlay->hide();
            d->m_snippetOverlay->clear();
            QTextCursor cursor = textCursor();
            cursor.clearSelection();