basetexteditor.cpp 220 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) 2012 Nokia Corporation and/or its subsidiary(-ies).
con's avatar
con committed
6
**
Eike Ziller's avatar
Eike Ziller committed
7
** Contact: http://www.qt-project.org/
con's avatar
con committed
8
**
9
**
10
** GNU Lesser General Public License Usage
11
**
hjk's avatar
hjk committed
12 13 14 15 16 17
** 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.
18
**
con's avatar
con committed
19
** In addition, as a special exception, Nokia gives you certain additional
hjk's avatar
hjk committed
20
** rights. These rights are described in the Nokia Qt LGPL Exception
con's avatar
con committed
21 22
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
hjk's avatar
hjk committed
23 24 25 26 27
** Other Usage
**
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
con's avatar
con committed
28
**
29
**************************************************************************/
hjk's avatar
hjk committed
30

con's avatar
con committed
31
#include "texteditor_global.h"
hjk's avatar
hjk committed
32

con's avatar
con committed
33
#include "basetextdocument.h"
34
#include "basetextdocumentlayout.h"
con's avatar
con committed
35
#include "basetexteditor_p.h"
36
#include "behaviorsettings.h"
con's avatar
con committed
37
#include "codecselector.h"
38
#include "completionsettings.h"
39
#include "tabsettings.h"
Jarek Kobus's avatar
Jarek Kobus committed
40 41
#include "typingsettings.h"
#include "icodestylepreferences.h"
42 43
#include "texteditorconstants.h"
#include "texteditorplugin.h"
44
#include "syntaxhighlighter.h"
45 46
#include "tooltip.h"
#include "tipcontents.h"
47
#include "indenter.h"
48
#include "autocompleter.h"
49
#include "snippet.h"
Leandro Melo's avatar
Leandro Melo committed
50 51 52
#include "codeassistant.h"
#include "defaultassistinterface.h"
#include "convenience.h"
53
#include "texteditorsettings.h"
54
#include "texteditoroverlay.h"
55
#include "circularclipboard.h"
56
#include "circularclipboardassist.h"
con's avatar
con committed
57

58
#include <aggregation/aggregate.h>
59
#include <coreplugin/actionmanager/actionmanager.h>
60 61
#include <coreplugin/actionmanager/actioncontainer.h>
#include <coreplugin/actionmanager/command.h>
con's avatar
con committed
62 63
#include <coreplugin/coreconstants.h>
#include <coreplugin/editormanager/editormanager.h>
64
#include <coreplugin/icore.h>
65
#include <coreplugin/infobar.h>
66
#include <coreplugin/manhattanstyle.h>
67
#include <coreplugin/id.h>
68
#include <extensionsystem/pluginmanager.h>
con's avatar
con committed
69 70
#include <find/basetextfind.h>
#include <utils/linecolumnlabel.h>
hjk's avatar
hjk committed
71
#include <utils/qtcassert.h>
72
#include <utils/stylehelper.h>
con's avatar
con committed
73

74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102
#include <QCoreApplication>
#include <QTextCodec>
#include <QFile>
#include <QDebug>
#include <QTimer>
#include <QTimeLine>
#include <QTime>
#include <QMimeData>
#include <QAbstractTextDocumentLayout>
#include <QApplication>
#include <QKeyEvent>
#include <QLabel>
#include <QLayout>
#include <QPainter>
#include <QPrinter>
#include <QPrintDialog>
#include <QScrollBar>
#include <QShortcut>
#include <QStyle>
#include <QSyntaxHighlighter>
#include <QTextCursor>
#include <QTextDocumentFragment>
#include <QTextBlock>
#include <QTextLayout>
#include <QToolBar>
#include <QInputDialog>
#include <QMenu>
#include <QMessageBox>
#include <QClipboard>
con's avatar
con committed
103

104 105
//#define DO_FOO

Leandro Melo's avatar
Leandro Melo committed
106 107 108 109 110 111 112 113 114 115 116 117
/*!
    \namespace TextEditor
    \brief The TextEditor namespace contains the base text editor and several classes which
    provide supporting functionality like snippets, highlighting, \l{CodeAssist}{code assist},
    indentation and style, and others.
*/

/*!
    \namespace TextEditor::Internal
    \internal
*/

con's avatar
con committed
118 119 120 121
using namespace TextEditor;
using namespace TextEditor::Internal;

namespace TextEditor {
122
namespace Internal {
con's avatar
con committed
123 124

class TextEditExtraArea : public QWidget {
125
    BaseTextEditorWidget *textEdit;
con's avatar
con committed
126
public:
127
    TextEditExtraArea(BaseTextEditorWidget *edit):QWidget(edit) {
con's avatar
con committed
128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151
        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);
    }
152 153 154
    void contextMenuEvent(QContextMenuEvent *event) {
        textEdit->extraAreaContextMenuEvent(event);
    }
con's avatar
con committed
155 156 157 158 159 160

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

161 162
} // namespace Internal
} // namespace TextEditor
con's avatar
con committed
163

164
Core::IEditor *BaseTextEditorWidget::openEditorAt(const QString &fileName, int line, int column,
hjk's avatar
hjk committed
165
                                 const Core::Id &editorKind,
166 167
                                 Core::EditorManager::OpenEditorFlags flags,
                                 bool *newEditor)
con's avatar
con committed
168
{
169
    Core::EditorManager *editorManager = Core::EditorManager::instance();
170
    editorManager->cutForwardNavigationHistory();
171
    editorManager->addCurrentPositionToNavigationHistory();
hjk's avatar
hjk committed
172
    Core::IEditor *editor = Core::EditorManager::openEditor(fileName, editorKind,
173
            flags, newEditor);
con's avatar
con committed
174
    TextEditor::ITextEditor *texteditor = qobject_cast<TextEditor::ITextEditor *>(editor);
175
    if (texteditor && line != -1) {
con's avatar
con committed
176 177 178
        texteditor->gotoLine(line, column);
        return texteditor;
    }
179

180
    return editor;
con's avatar
con committed
181 182
}

183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204
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:
            ;
        }
    }
}

205 206 207 208
static const char kTextBlockMimeType[] = "application/vnd.nokia.qtcreator.blocktext";
static const char kVerticalTextBlockMimeType[] = "application/vnd.nokia.qtcreator.vblocktext";


209
BaseTextEditorWidget::BaseTextEditorWidget(QWidget *parent)
con's avatar
con committed
210 211
    : QPlainTextEdit(parent)
{
212
    d = new BaseTextEditorWidgetPrivate;
con's avatar
con committed
213 214 215 216 217
    d->q = this;
    d->m_extraArea = new TextEditExtraArea(this);
    d->m_extraArea->setMouseTracking(true);
    setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);

218
    d->m_overlay = new TextEditorOverlay(this);
219
    d->m_snippetOverlay = new TextEditorOverlay(this);
220
    d->m_searchResultOverlay = new TextEditorOverlay(this);
221
    d->m_refactorOverlay = new RefactorOverlay(this);
222

con's avatar
con committed
223 224 225 226 227 228 229 230 231 232
    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
233
        = d->extraAreaHighlightFoldedBlockNumber
con's avatar
con committed
234 235
        = -1;

mae's avatar
mae committed
236
    d->visibleFoldedBlockNumber = d->suggestedVisibleFoldedBlockNumber = -1;
con's avatar
con committed
237 238 239 240

    connect(this, SIGNAL(blockCountChanged(int)), this, SLOT(slotUpdateExtraAreaWidth()));
    connect(this, SIGNAL(modificationChanged(bool)), this, SLOT(slotModificationChanged(bool)));
    connect(this, SIGNAL(cursorPositionChanged()), this, SLOT(slotCursorPositionChanged()));
Robert Loehning's avatar
Robert Loehning committed
241
    connect(this, SIGNAL(updateRequest(QRect,int)), this, SLOT(slotUpdateRequest(QRect,int)));
con's avatar
con committed
242 243 244 245 246 247
    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()));

248 249 250 251
#ifdef DO_FOO
    (void) new QShortcut(tr("CTRL+D"), this, SLOT(doFoo()));
#endif

con's avatar
con committed
252 253 254 255 256 257 258 259 260 261

    // 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()));

262 263 264 265
    d->m_highlightBlocksTimer = new QTimer(this);
    d->m_highlightBlocksTimer->setSingleShot(true);
    connect(d->m_highlightBlocksTimer, SIGNAL(timeout()), this, SLOT(_q_highlightBlocks()));

266
    d->m_animator = 0;
con's avatar
con committed
267 268 269 270

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

    slotUpdateExtraAreaWidth();
con's avatar
con committed
271
    updateHighlights();
con's avatar
con committed
272 273
    setFrameStyle(QFrame::NoFrame);

274 275 276 277
    d->m_delayedUpdateTimer = new QTimer(this);
    d->m_delayedUpdateTimer->setSingleShot(true);
    connect(d->m_delayedUpdateTimer, SIGNAL(timeout()), viewport(), SLOT(update()));

mae's avatar
mae committed
278
    d->m_moveLineUndoHack = false;
con's avatar
con committed
279 280
}

281
BaseTextEditorWidget::~BaseTextEditorWidget()
con's avatar
con committed
282 283 284 285 286
{
    delete d;
    d = 0;
}

287
QString BaseTextEditorWidget::mimeType() const
con's avatar
con committed
288 289 290 291
{
    return d->m_document->mimeType();
}

292
void BaseTextEditorWidget::setMimeType(const QString &mt)
con's avatar
con committed
293 294 295 296
{
    d->m_document->setMimeType(mt);
}

297
void BaseTextEditorWidget::print(QPrinter *printer)
con's avatar
con committed
298 299 300 301 302 303 304 305 306 307 308 309
{
    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
310
static int foldBoxWidth(const QFontMetrics &fm)
311 312 313 314 315
{
    const int lineSpacing = fm.lineSpacing();
    return lineSpacing + lineSpacing%2 + 1;
}

con's avatar
con committed
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
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();
}

352
void BaseTextEditorWidgetPrivate::print(QPrinter *printer)
con's avatar
con committed
353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488
{
    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;
}


489
int BaseTextEditorWidgetPrivate::visualIndent(const QTextBlock &block) const
490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505
{
    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
506

507
ITextMarkable *BaseTextEditorWidget::markableInterface() const
con's avatar
con committed
508 509 510 511
{
    return baseTextDocument()->documentMarker();
}

512
BaseTextEditor *BaseTextEditorWidget::editor() const
con's avatar
con committed
513
{
514
    if (!d->m_editor) {
Leandro Melo's avatar
Leandro Melo committed
515 516
        d->m_editor = const_cast<BaseTextEditorWidget *>(this)->createEditor();
        d->m_codeAssistant->configure(d->m_editor);
con's avatar
con committed
517
        connect(this, SIGNAL(textChanged()),
518
                d->m_editor, SIGNAL(contentsChanged()));
con's avatar
con committed
519
        connect(this, SIGNAL(changed()),
520
                d->m_editor, SIGNAL(changed()));
con's avatar
con committed
521
    }
522
    return d->m_editor;
con's avatar
con committed
523 524 525
}


526
void BaseTextEditorWidget::selectEncoding()
con's avatar
con committed
527 528 529 530 531
{
    BaseTextDocument *doc = d->m_document;
    CodecSelector codecSelector(this, doc);

    switch (codecSelector.exec()) {
532 533 534 535 536 537 538
    case CodecSelector::Reload: {
        QString errorString;
        if (!doc->reload(&errorString, codecSelector.selectedCodec())) {
            QMessageBox::critical(this, tr("File Error"), errorString);
            break;
        }
        break; }
con's avatar
con committed
539 540
    case CodecSelector::Save:
        doc->setCodec(codecSelector.selectedCodec());
541
        Core::EditorManager::instance()->saveEditor(editor());
con's avatar
con committed
542 543 544 545 546 547
        break;
    case CodecSelector::Cancel:
        break;
    }
}

548
QString BaseTextEditorWidget::msgTextTooLarge(quint64 size)
549 550 551 552 553
{
    return tr("The text is too large to be displayed (%1 MB).").
           arg(size >> 20);
}

554
bool BaseTextEditorWidget::createNew(const QString &contents)
con's avatar
con committed
555
{
556 557 558 559 560
    if (contents.size() > Core::EditorManager::maxTextFileSize()) {
        setPlainText(msgTextTooLarge(contents.size()));
        document()->setModified(false);
        return false;
    }
con's avatar
con committed
561 562 563 564 565
    setPlainText(contents);
    document()->setModified(false);
    return true;
}

566 567 568 569 570 571 572 573 574 575 576 577 578 579 580
void BaseTextEditorWidget::updateCannotDecodeInfo()
{
    setReadOnly(d->m_document->hasDecodingError());
    if (d->m_document->hasDecodingError()) {
        Core::InfoBarEntry info(
            QLatin1String(Constants::SELECT_ENCODING),
            tr("<b>Error:</b> Could not decode \"%1\" with \"%2\"-encoding. Editing not possible.")
            .arg(displayName()).arg(QString::fromLatin1(d->m_document->codec()->name())));
        info.setCustomButtonInfo(tr("Select Encoding"), this, SLOT(selectEncoding()));
        d->m_document->infoBar()->addInfo(info);
    } else {
        d->m_document->infoBar()->removeInfo(QLatin1String(Constants::SELECT_ENCODING));
    }
}

581
bool BaseTextEditorWidget::open(QString *errorString, const QString &fileName, const QString &realFileName)
con's avatar
con committed
582
{
583
    if (d->m_document->open(errorString, fileName, realFileName)) {
con's avatar
con committed
584
        moveCursor(QTextCursor::Start);
585
        updateCannotDecodeInfo();
con's avatar
con committed
586 587 588 589 590
        return true;
    }
    return false;
}

591 592 593
/*
  Collapses the first comment in a file, if there is only whitespace above
  */
594
void BaseTextEditorWidgetPrivate::foldLicenseHeader()
595 596
{
    QTextDocument *doc = q->document();
597
    BaseTextDocumentLayout *documentLayout = qobject_cast<BaseTextDocumentLayout*>(doc->documentLayout());
598 599 600
    QTC_ASSERT(documentLayout, return);
    QTextBlock block = doc->firstBlock();
    const TabSettings &ts = m_document->tabSettings();
601
    while (block.isValid() && block.isVisible()) {
602
        QString text = block.text();
mae's avatar
mae committed
603 604 605 606 607 608 609 610 611
        if (BaseTextDocumentLayout::canFold(block) && block.next().isVisible()) {
            if (text.trimmed().startsWith(QLatin1String("/*"))) {
                BaseTextDocumentLayout::doFoldOrUnfold(block, false);
                moveCursorVisible();
                documentLayout->requestUpdate();
                documentLayout->emitDocumentSizeChanged();
                break;
            }
        }
612 613 614 615 616 617
        if (ts.firstNonSpace(text) < text.size())
            break;
        block = block.next();
    }
}

618
const Utils::ChangeSet &BaseTextEditorWidget::changeSet() const
619 620 621 622
{
    return d->m_changeSet;
}

623
void BaseTextEditorWidget::setChangeSet(const Utils::ChangeSet &changeSet)
624
{
Roberto Raggi's avatar
Roberto Raggi committed
625 626
    using namespace Utils;

627
    d->m_changeSet = changeSet;
Roberto Raggi's avatar
Roberto Raggi committed
628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654

    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
    }
655 656
}

657
Core::IDocument *BaseTextEditorWidget::editorDocument() const
con's avatar
con committed
658 659 660 661
{
    return d->m_document;
}

662
void BaseTextEditorWidget::editorContentsChange(int position, int charsRemoved, int charsAdded)
con's avatar
con committed
663
{
664 665 666
    if (d->m_animator)
        d->m_animator->finish();

con's avatar
con committed
667
    d->m_contentsChanged = true;
668
    QTextDocument *doc = document();
669
    BaseTextDocumentLayout *documentLayout = static_cast<BaseTextDocumentLayout*>(doc->documentLayout());
con's avatar
con committed
670 671 672

    // Keep the line numbers and the block information for the text marks updated
    if (charsRemoved != 0) {
673 674
        documentLayout->updateMarksLineNumber();
        documentLayout->updateMarksBlock(document()->findBlock(position));
con's avatar
con committed
675
    } else {
676 677
        const QTextBlock posBlock = doc->findBlock(position);
        const QTextBlock nextBlock = doc->findBlock(position + charsAdded);
con's avatar
con committed
678
        if (posBlock != nextBlock) {
679 680 681
            documentLayout->updateMarksLineNumber();
            documentLayout->updateMarksBlock(posBlock);
            documentLayout->updateMarksBlock(nextBlock);
con's avatar
con committed
682
        } else {
683
            documentLayout->updateMarksBlock(posBlock);
con's avatar
con committed
684 685
        }
    }
686

687 688 689
    if (d->m_snippetOverlay->isVisible()) {
        QTextCursor cursor = textCursor();
        cursor.setPosition(position);
690
        d->snippetCheckCursor(cursor);
691 692
    }

693
    if (doc->isRedoAvailable())
694
        emit editor()->contentsChangedBecauseOfUndo();
Leandro Melo's avatar
Leandro Melo committed
695 696 697

    if (charsAdded != 0 && characterAt(position + charsAdded - 1).isPrint())
        d->m_assistRelevantContentAdded = true;
con's avatar
con committed
698 699
}

700
void BaseTextEditorWidget::slotSelectionChanged()
con's avatar
con committed
701
{
mae's avatar
mae committed
702 703 704
    if (d->m_inBlockSelectionMode && !textCursor().hasSelection()) {
        d->m_inBlockSelectionMode = false;
        d->m_blockSelection.clear();
con's avatar
con committed
705
        viewport()->update();
mae's avatar
mae committed
706 707
    }

708 709
    if (!d->m_selectBlockAnchor.isNull() && !textCursor().hasSelection())
        d->m_selectBlockAnchor = QTextCursor();
710 711 712

    // Clear any link which might be showing when the selection changes
    clearLink();
con's avatar
con committed
713 714
}

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

724
void BaseTextEditorWidget::gotoBlockEnd()
725 726
{
    QTextCursor cursor = textCursor();
727
    if (TextBlockUserData::findNextClosingParenthesis(&cursor, false)) {
728
        setTextCursor(cursor);
729 730
        _q_matchParentheses();
    }
731 732
}

733
void BaseTextEditorWidget::gotoBlockStartWithSelection()
734 735
{
    QTextCursor cursor = textCursor();
736
    if (TextBlockUserData::findPreviousOpenParenthesis(&cursor, true)) {
737
        setTextCursor(cursor);
738 739
        _q_matchParentheses();
    }
740 741
}

742
void BaseTextEditorWidget::gotoBlockEndWithSelection()
743 744
{
    QTextCursor cursor = textCursor();
745
    if (TextBlockUserData::findNextClosingParenthesis(&cursor, true)) {
746
        setTextCursor(cursor);
747 748 749 750
        _q_matchParentheses();
    }
}

mae's avatar
mae committed
751

752
void BaseTextEditorWidget::gotoLineStart()
mae's avatar
mae committed
753 754 755 756
{
    handleHomeKey(false);
}

757
void BaseTextEditorWidget::gotoLineStartWithSelection()
mae's avatar
mae committed
758 759 760 761
{
    handleHomeKey(true);
}

762
void BaseTextEditorWidget::gotoLineEnd()
mae's avatar
mae committed
763 764 765 766
{
    moveCursor(QTextCursor::EndOfLine);
}

767
void BaseTextEditorWidget::gotoLineEndWithSelection()
mae's avatar
mae committed
768 769 770 771
{
    moveCursor(QTextCursor::EndOfLine, QTextCursor::KeepAnchor);
}

772
void BaseTextEditorWidget::gotoNextLine()
mae's avatar
mae committed
773
{
774
    moveCursor(QTextCursor::Down);
mae's avatar
mae committed
775 776
}

777
void BaseTextEditorWidget::gotoNextLineWithSelection()
mae's avatar
mae committed
778
{
779
    moveCursor(QTextCursor::Down, QTextCursor::KeepAnchor);
mae's avatar
mae committed
780 781
}

782
void BaseTextEditorWidget::gotoPreviousLine()
mae's avatar
mae committed
783
{
784
    moveCursor(QTextCursor::Up);
mae's avatar
mae committed
785 786
}

787
void BaseTextEditorWidget::gotoPreviousLineWithSelection()
mae's avatar
mae committed
788
{
789
    moveCursor(QTextCursor::Up, QTextCursor::KeepAnchor);
mae's avatar
mae committed
790 791
}

792
void BaseTextEditorWidget::gotoPreviousCharacter()
mae's avatar
mae committed
793 794 795 796
{
    moveCursor(QTextCursor::PreviousCharacter);
}

797
void BaseTextEditorWidget::gotoPreviousCharacterWithSelection()
mae's avatar
mae committed
798 799 800 801
{
    moveCursor(QTextCursor::PreviousCharacter, QTextCursor::KeepAnchor);
}

802
void BaseTextEditorWidget::gotoNextCharacter()
mae's avatar
mae committed
803 804 805 806
{
    moveCursor(QTextCursor::NextCharacter);
}

807
void BaseTextEditorWidget::gotoNextCharacterWithSelection()
mae's avatar
mae committed
808 809 810 811
{
    moveCursor(QTextCursor::NextCharacter, QTextCursor::KeepAnchor);
}

812
void BaseTextEditorWidget::gotoPreviousWord()
mae's avatar
mae committed
813 814
{
    moveCursor(QTextCursor::PreviousWord);
815
    setTextCursor(textCursor());
mae's avatar
mae committed
816 817
}

818
void BaseTextEditorWidget::gotoPreviousWordWithSelection()
mae's avatar
mae committed
819 820
{
    moveCursor(QTextCursor::PreviousWord, QTextCursor::KeepAnchor);
821
    setTextCursor(textCursor());
mae's avatar
mae committed
822 823
}

824
void BaseTextEditorWidget::gotoNextWord()
mae's avatar
mae committed
825 826
{
    moveCursor(QTextCursor::NextWord);
827
    setTextCursor(textCursor());
mae's avatar
mae committed
828 829
}

830
void BaseTextEditorWidget::gotoNextWordWithSelection()
mae's avatar
mae committed
831 832
{
    moveCursor(QTextCursor::NextWord, QTextCursor::KeepAnchor);
833
    setTextCursor(textCursor());
mae's avatar
mae committed
834 835
}

836
void BaseTextEditorWidget::gotoPreviousWordCamelCase()
mae's avatar
mae committed
837 838 839 840 841 842
{
    QTextCursor c = textCursor();
    camelCaseLeft(c, QTextCursor::MoveAnchor);
    setTextCursor(c);
}

843
void BaseTextEditorWidget::gotoPreviousWordCamelCaseWithSelection()
mae's avatar
mae committed
844 845 846 847 848 849
{
    QTextCursor c = textCursor();
    camelCaseLeft(c, QTextCursor::KeepAnchor);
    setTextCursor(c);
}

850
void BaseTextEditorWidget::gotoNextWordCamelCase()
mae's avatar
mae committed
851 852 853 854 855 856 857
{
    qDebug() << Q_FUNC_INFO;
    QTextCursor c = textCursor();
    camelCaseRight(c, QTextCursor::MoveAnchor);
    setTextCursor(c);
}

858
void BaseTextEditorWidget::gotoNextWordCamelCaseWithSelection()
mae's avatar
mae committed
859 860 861 862 863 864
{
    QTextCursor c = textCursor();
    camelCaseRight(c, QTextCursor::KeepAnchor);
    setTextCursor(c);
}

mae's avatar
mae committed
865 866


867 868
static QTextCursor flippedCursor(const QTextCursor &cursor)
{
869 870 871 872
    QTextCursor flipped = cursor;
    flipped.clearSelection();
    flipped.setPosition(cursor.anchor(), QTextCursor::KeepAnchor);
    return flipped;
873 874
}

875
bool BaseTextEditorWidget::selectBlockUp()
876 877 878 879 880 881 882 883
{
    QTextCursor cursor = textCursor();
    if (!cursor.hasSelection())
        d->m_selectBlockAnchor = cursor;
    else
        cursor.setPosition(cursor.selectionStart());

    if (!TextBlockUserData::findPreviousOpenParenthesis(&cursor, false))
884
        return false;
885
    if (!TextBlockUserData::findNextClosingParenthesis(&cursor, true))
886 887
        return false;

888 889
    setTextCursor(flippedCursor(cursor));
    _q_matchParentheses();
890
    return true;
891 892
}

893
bool BaseTextEditorWidget::selectBlockDown()
894 895 896 897 898
{
    QTextCursor tc = textCursor();
    QTextCursor cursor = d->m_selectBlockAnchor;

    if (!tc.hasSelection() || cursor.isNull())
899
        return false;
900 901 902 903 904 905 906 907 908 909 910 911 912
    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);

913 914
    setTextCursor(flippedCursor(cursor));
    _q_matchParentheses();
915
    return true;
916 917
}

918
void BaseTextEditorWidget::copyLineUp()
919 920 921 922
{
    copyLineUpDown(true);
}

923
void BaseTextEditorWidget::copyLineDown()
924 925 926 927
{
    copyLineUpDown(false);
}

928
// @todo: Potential reuse of some code around the following functions...
929
void BaseTextEditorWidget::copyLineUpDown(bool up)
930 931 932 933 934 935 936 937 938 939 940
{
    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);
941 942
        move.movePosition(move.atBlockStart() ? QTextCursor::Left: QTextCursor::EndOfBlock,
                          QTextCursor::KeepAnchor);
943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979
    } 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);
}

980
void BaseTextEditorWidget::joinLines()
981
{
982 983 984
    QTextCursor cursor = textCursor();
    QTextCursor start = cursor;
    QTextCursor end = cursor;
985

986 987
    start.setPosition(cursor.selectionStart());
    end.setPosition(cursor.selectionEnd() - 1);
988

989
    int lineCount = qMax(1, end.blockNumber() - start.blockNumber());
990

991 992 993 994 995 996 997
    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();
998

999
        // Collapse leading whitespaces to one or insert whitespace
1000
        cutLine.replace(QRegExp(QLatin1String("^\\s*")), QLatin1String(" "));
1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011
        cursor.movePosition(QTextCursor::Right, QTextCursor::KeepAnchor);
        cursor.removeSelectedText();

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

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

    setTextCursor(cursor);
1012 1013
}

1014
void BaseTextEditorWidget::insertLineAbove()
1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025
{
    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);
}

1026
void BaseTextEditorWidget::insertLineBelow()
1027 1028 1029 1030 1031 1032 1033 1034 1035 1036
{
    QTextCursor cursor = textCursor();
    cursor.beginEditBlock();
    cursor.movePosition(QTextCursor::EndOfBlock, QTextCursor::MoveAnchor);
    cursor.insertBlock();
    indent(document(), cursor, QChar::Null);
    cursor.endEditBlock();
    setTextCursor(cursor);
}

1037
void BaseTextEditorWidget::moveLineUp()
1038 1039 1040 1041
{
    moveLineUpDown(true);
}

1042
void BaseTextEditorWidget::moveLineDown()
1043 1044 1045 1046
{
    moveLineUpDown(false);
}

1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057
void BaseTextEditorWidget::uppercaseSelection()
{
    transformSelection(&QString::toUpper);
}


void BaseTextEditorWidget::lowercaseSelection()
{
    transformSelection(&QString::toLower);
}

1058 1059 1060 1061 1062 1063 1064 1065 1066 1067
void BaseTextEditorWidget::indent()
{
    indentOrUnindent(true);
}

void BaseTextEditorWidget::unindent()
{
    indentOrUnindent(false);
}

1068 1069 1070 1071 1072
void BaseTextEditorWidget::openLinkUnderCursor()
{
    openLink(findLinkAt(textCursor()));
}

1073
void BaseTextEditorWidget::moveLineUpDown(bool up)
1074 1075 1076
{
    QTextCursor cursor = textCursor();
    QTextCursor move = cursor;
1077

mae's avatar
mae committed
1078
    move.setVisualNavigation(false); // this opens folded items instead of destroying them
1079

1080 1081 1082 1083
    if (d->m_moveLineUndoHack)
        move.joinPreviousEditBlock();
    else
        move.beginEditBlock();
1084 1085 1086 1087 1088 1089 1090

    bool hasSelection = cursor.hasSelection();

    if (cursor.hasSelection()) {
        move.setPosition(cursor.selectionStart());
        move.movePosition(QTextCursor::StartOfBlock);
        move.setPosition(cursor.selectionEnd(), QTextCursor::KeepAnchor);
1091 1092
        move.movePosition(move.atBlockStart() ? QTextCursor::Left: QTextCursor::EndOfBlock,
                          QTextCursor::KeepAnchor);
1093 1094 1095 1096 1097
    } else {
        move.movePosition(QTextCursor::StartOfBlock);
        move.movePosition(QTextCursor::EndOfBlock, QTextCursor::KeepAnchor);
    }
    QString text = move.selectedText();
1098 1099 1100 1101 1102 1103 1104

    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
1105 1106
        if ((move.selectionStart() <= marker.cursor.position())
                && (move.selectionEnd() >= marker.cursor.position())) {
1107 1108 1109 1110 1111 1112 1113 1114 1115
            affectedMarkers.append(marker);
            //remember the offset of markers in text
            int offset = marker.cursor.position() - move.selectionStart();
            markerOffsets.append(offset);
        } else {
            nonAffectedMarkers.append(marker);
        }
    }

1116 1117
    move.movePosition(QTextCursor::Right, QTextCursor::KeepAnchor);
    move.removeSelectedText();
1118